$144+ Cheap flights from Pennsylvania to Washington
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
May 30 — Jun 61
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Pennsylvania to Washington with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Pennsylvania to Washington
Cheapest
Best
Last-minute
One-way
Cheapest flights from Pennsylvania to WashingtonExplore the most affordable flight options available from Pennsylvania to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.
Explore the most affordable flight options available from Pennsylvania to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.
This Trip.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Wed 6/108:12 pm
SEA
- IAD
1 stop9h 13m
Frontier
Deal found 4/26![Frontier logo]()
$259
This Orbitz deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Fri 6/58:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Deal found 4/25![Frontier logo]()
$261
This Orbitz deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:00 am
DCA
- SEA
1 stop30h 06m
Frontier
Fri 6/53:19 pm
SEA
- DCA
1 stop27h 39m
Frontier
Deal found 4/25![Frontier logo]()
$261
This Super.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/89:12 am
IAD
- SEA
1 stop28h 23m
Frontier
Mon 6/158:12 pm
SEA
- IAD
1 stop9h 13m
Frontier
Deal found 4/26![Frontier logo]()
$262
This Booking.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:00 am
DCA
- SEA
1 stop30h 06m
Frontier
Fri 5/293:19 pm
SEA
- DCA
1 stop18h 40m
Frontier
Deal found 4/25![Frontier logo]()
$263
This Orbitz deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/59:12 am
IAD
- SEA
1 stop28h 24m
Multiple Airlines
Tue 6/911:30 pm
SEA
- IAD
Nonstop5h 04m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$264
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:00 am
IAD
- SEA
Nonstop5h 39m
Alaska Airlines
Sat 9/199:32 pm
SEA
- IAD
Nonstop5h 08m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:00 pm
DCA
- SEA
1 stop7h 59m
United Airlines
Tue 9/2210:47 pm
SEA
- DCA
1 stop7h 28m
United Airlines
Deal found 4/25![United Airlines logo]()
$265
This Super.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:00 pm
DCA
- SEA
1 stop19h 06m
Frontier
Fri 6/57:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Deal found 4/25![Frontier logo]()
$267
This Expedia deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/79:12 am
IAD
- SEA
1 stop28h 24m
Multiple Airlines
Wed 7/86:21 am
SEA
- IAD
1 stop9h 24m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$268
This Super.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:59 pm
DCA
- SEA
1 stop22h 50m
Frontier
Fri 5/87:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Deal found 4/27![Frontier logo]()
$268
This Kissandfly.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/59:12 am
IAD
- SEA
1 stop28h 24m
Multiple Airlines
Thu 6/119:13 am
SEA
- IAD
Nonstop4h 58m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$269
Best flights from Pennsylvania to WashingtonDiscover carefully curated flight deals from Pennsylvania to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2026.
Discover carefully curated flight deals from Pennsylvania to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2026.
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:08 pm
EWR
- SEA
1 stop7h 55m
United Airlines
Tue 9/152:26 pm
SEA
- EWR
1 stop7h 23m
United Airlines
Deal found 4/29![United Airlines logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:49 pm
IAD
- SEA
1 stop16h 30m
Alaska Airlines
Tue 7/219:04 pm
SEA
- IAD
1 stop18h 41m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:45 pm
PHL
- SEA
Nonstop5h 50m
Delta
Sun 6/149:25 am
SEA
- PHL
Nonstop5h 10m
Delta
Deal found 4/28![Delta logo]()
$329
This JetBlue deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:38 pm
JFK
- SEA
Nonstop6h 26m
JetBlue
Wed 7/1510:19 pm
SEA
- JFK
Nonstop5h 20m
JetBlue
Deal found 4/25![JetBlue logo]()
$337
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/511:40 am
DCA
- SEA
2 stops11h 30m
Southwest
Mon 6/811:05 pm
SEA
- DCA
1 stop6h 20m
Southwest
Deal found 4/28![Southwest logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/197:00 am
JFK
- SEA
Nonstop6h 12m
Alaska Airlines
Tue 5/2610:50 pm
SEA
- JFK
Nonstop5h 26m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:45 pm
PHL
- SEA
Nonstop6h 14m
Delta
Thu 7/99:20 pm
SEA
- PHL
Nonstop5h 09m
Delta
Deal found 4/29![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:43 pm
EWR
- PDX
Nonstop6h 03m
United Airlines
Tue 5/262:27 pm
PDX
- EWR
1 stop7h 30m
United Airlines
Deal found 4/28![United Airlines logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:55 am
EWR
- SEA
1 stop8h 55m
Alaska Airlines
Wed 10/146:00 am
SEA
- EWR
Nonstop5h 21m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:30 am
LGA
- SEA
1 stop11h 55m
Southwest
Wed 7/158:50 am
SEA
- LGA
1 stop10h 05m
Southwest
Deal found 4/27![Southwest logo]()
$357
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
LGA
- SEA
1 stop7h 55m
Delta
Fri 6/511:59 pm
SEA
- LGA
1 stop9h 32m
Delta
Deal found 4/25![Delta logo]()
$336
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
EWR
- PDX
1 stop8h 38m
United Airlines
Wed 6/1010:52 pm
PDX
- EWR
Nonstop5h 14m
United Airlines
Deal found 4/29![United Airlines logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:00 am
JFK
- SEA
Nonstop6h 12m
Alaska Airlines
Sat 5/307:05 am
SEA
- JFK
1 stop9h 23m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$336
This JetBlue deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:38 pm
JFK
- SEA
Nonstop6h 30m
JetBlue
Fri 7/310:28 pm
SEA
- JFK
Nonstop5h 31m
JetBlue
Deal found 4/28![JetBlue logo]()
$407
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
IAD
- PDX
1 stop9h 30m
Delta
Fri 6/52:06 pm
PDX
- IAD
1 stop7h 45m
Delta
Deal found 4/25![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/256:55 pm
PHL
- SEA
1 stop8h 35m
Southwest
Fri 7/311:05 pm
SEA
- PHL
1 stop13h 05m
Southwest
Deal found 4/27![Southwest logo]()
$384
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:05 am
LGA
- PDX
1 stop10h 47m
United Airlines
Wed 7/1511:40 pm
PDX
- LGA
1 stop7h 37m
United Airlines
Deal found 4/26![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:12 am
PHL
- SEA
1 stop7h 53m
Delta
Mon 6/19:20 pm
SEA
- PHL
Nonstop5h 15m
Delta
Deal found 4/26![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:30 am
JFK
- SEA
1 stop13h 00m
Alaska Airlines
Fri 6/122:02 pm
SEA
- JFK
Nonstop5h 27m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:55 pm
PHL
- SEA
1 stop8h 30m
Southwest
Wed 8/511:05 pm
SEA
- PHL
2 stops11h 10m
Southwest
Deal found 4/25![Southwest logo]()
$384
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
LGA
- SEA
1 stop8h 48m
United Airlines
Fri 5/1510:53 pm
SEA
- LGA
1 stop8h 25m
United Airlines
Deal found 4/28![United Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:45 pm
PHL
- SEA
Nonstop6h 14m
Delta
Sun 6/1411:59 pm
SEA
- PHL
1 stop7h 48m
Delta
Deal found 4/29![Delta logo]()
$339
This JetBlue deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:00 am
JFK
- PDX
1 stop10h 04m
JetBlue
Fri 7/1711:27 pm
PDX
- JFK
1 stop7h 32m
JetBlue
Deal found 4/29![JetBlue logo]()
$453
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:30 am
EWR
- SEA
Nonstop6h 10m
Alaska Airlines
Sun 5/2410:30 pm
SEA
- EWR
Nonstop5h 22m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:00 am
EWR
- PDX
Nonstop5h 54m
United Airlines
Wed 8/2611:15 pm
PDX
- EWR
1 stop8h 07m
United Airlines
Deal found 4/27![United Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/304:55 pm
DCA
- SEA
2 stops9h 10m
Southwest
Sat 8/811:00 pm
SEA
- DCA
1 stop10h 45m
Southwest
Deal found 4/26![Southwest logo]()
$406
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:45 pm
PHL
- SEA
Nonstop6h 14m
Delta
Sat 6/136:05 am
SEA
- PHL
1 stop9h 02m
Delta
Deal found 4/26![Delta logo]()
$339
This JetBlue deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/293:55 pm
JFK
- PDX
1 stop9h 39m
JetBlue
Mon 7/2711:27 pm
PDX
- JFK
1 stop11h 30m
JetBlue
Deal found 4/29![JetBlue logo]()
$458
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:30 am
EWR
- PDX
Nonstop5h 55m
United Airlines
Wed 8/125:00 am
PDX
- EWR
1 stop9h 37m
United Airlines
Deal found 4/25![United Airlines logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:33 pm
EWR
- SEA
1 stop7h 53m
Alaska Airlines
Wed 5/133:30 pm
SEA
- EWR
Nonstop5h 29m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$362
Last-minute flights from Pennsylvania to WashingtonDiscover last-minute flight deals from Pennsylvania to Washington. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Washington. Data last updated April 30, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:59 pm
DCA
- SEA
1 stop22h 50m
Frontier
Fri 5/87:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Deal found 4/27![Frontier logo]()
$268
This Booking.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:59 pm
DCA
- SEA
1 stop22h 50m
Frontier
Thu 5/77:50 pm
SEA
- DCA
1 stop23h 08m
Frontier
Deal found 4/27![Frontier logo]()
$275
This Super.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/91:59 pm
DCA
- SEA
1 stop22h 50m
Frontier
Tue 5/127:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Deal found 4/28![Frontier logo]()
$274
This SmartFares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:30 am
EWR
- SEA
Nonstop6h 10m
Alaska Airlines
Tue 5/193:30 pm
SEA
- EWR
Nonstop5h 29m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$283
This SmartFares deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:30 am
EWR
- SEA
Nonstop6h 10m
Alaska Airlines
Mon 5/1810:30 pm
SEA
- EWR
Nonstop5h 22m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$285
This Expedia deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:28 pm
JFK
- SEA
Nonstop6h 24m
Multiple Airlines
Wed 5/2711:52 pm
SEA
- JFK
Nonstop5h 21m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$287
This JetBlue deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:29 pm
JFK
- SEA
Nonstop6h 27m
JetBlue
Tue 6/211:52 pm
SEA
- JFK
Nonstop5h 21m
JetBlue
Deal found 4/25![JetBlue logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:30 am
EWR
- SEA
Nonstop6h 10m
Alaska Airlines
Fri 5/293:30 pm
SEA
- EWR
Nonstop5h 29m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$279
This SmartFares deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:00 am
JFK
- SEA
Nonstop6h 12m
Alaska Airlines
Wed 6/36:45 am
SEA
- JFK
Nonstop5h 27m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$286
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:25 pm
EWR
- SEA
Nonstop6h 11m
United Airlines
Sat 6/611:00 pm
SEA
- EWR
Nonstop5h 18m
United Airlines
Deal found 4/28![United Airlines logo]()
$287
This Orbitz deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Fri 6/58:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Deal found 4/25![Frontier logo]()
$261
This Super.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Tue 6/98:12 pm
SEA
- IAD
1 stop9h 13m
Frontier
Deal found 4/25![Frontier logo]()
$277
One-way flights from Pennsylvania to WashingtonSearch for one-way flight options from Pennsylvania to Washington. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
Search for one-way flight options from Pennsylvania to Washington. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This American Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 pm
EWR
- SEA
1 stop8h 16m
American Airlines
Deal found 4/30![American Airlines logo]()
$144
This Super.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:00 am
DCA
- SEA
1 stop10h 01m
Frontier
Deal found 4/26![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:00 am
DCA
- SEA
1 stop10h 19m
Frontier
Deal found 4/25![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:29 pm
EWR
- SEA
2 stops18h 49m
Frontier
Deal found 4/29![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 pm
DCA
- SEA
2 stops27h 35m
Frontier
Deal found 4/25![Frontier logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:38 pm
JFK
- SEA
Nonstop6h 26m
JetBlue
Deal found 4/29![JetBlue logo]()
$148
This Super.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:00 pm
DCA
- SEA
1 stop18h 48m
Frontier
Deal found 4/29![Frontier logo]()
$148
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:30 pm
EWR
- SEA
1 stop8h 40m
Delta
Deal found 4/25![Delta logo]()
$149
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:00 am
JFK
- SEA
Nonstop6h 12m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$149
This Super.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 4/26![Frontier logo]()
$149
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/134:59 pm
LGA
- SEA
1 stop9h 00m
United Airlines
Deal found 4/27![United Airlines logo]()
$149
This Super.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:00 am
DCA
- SEA
1 stop30h 06m
Frontier
Deal found 4/27![Frontier logo]()
$149
Find flight deals from Pennsylvania to Washington
Keep the following information in mind while searching for Pennsylvania to Washington flight deals. Data was last updated April 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $259 (Trip.com) |
One-way from | $144 (American Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $414 |
Good round-trip deal | $376 or less |
Good one-way deal | $221 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2026.
Use the filters below to find and compare flights from Pennsylvania to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
NewarkSeattle
EWR - SEA
EWRSEA
Newark
Tue 9/8
3:08 pm-8:03 pm
1 stop7h 55m
Seattle/Tacoma Intl
Tue 9/15
2:26 pm-12:49 am
1 stop7h 23m
$287
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Tue 7/14
7:49 pm-9:19 am
1 stop16h 30m
Seattle/Tacoma Intl
Tue 7/21
9:04 pm-6:45 pm
1 stop18h 41m
$305
New YorkSeattle
JFK - SEA
JFKSEA
New York John F Kennedy Intl
Tue 5/19
7:00 am-10:12 am
Nonstop6h 12m
Seattle/Tacoma Intl
Tue 5/26
10:50 pm-7:16 am
Nonstop5h 26m
$316
NewarkSeattle
EWR - SEA
EWRSEA
Newark
Thu 10/1
6:55 am-12:50 pm
1 stop8h 55m
Seattle/Tacoma Intl
Wed 10/14
6:00 am-2:21 pm
Nonstop5h 21m
$317
Quickest round-trip
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Fri 6/5
6:45 pm-9:35 pm
Nonstop5h 50m
Seattle/Tacoma Intl
Sun 6/14
9:25 am-5:35 pm
Nonstop5h 10m
$329
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Wed 7/1
6:45 pm-9:59 pm
Nonstop6h 14m
Seattle/Tacoma Intl
Thu 7/9
9:20 pm-5:29 am
Nonstop5h 09m
$329
New YorkSeattle
LGA - SEA
LGASEA
New York LaGuardia
Wed 6/3
6:00 am-10:55 am
1 stop7h 55m
Seattle/Tacoma Intl
Fri 6/5
11:59 pm-12:31 pm
1 stop9h 32m
$336
New YorkSeattle
JFK - SEA
JFKSEA
New York John F Kennedy Intl
Tue 5/26
7:00 am-10:12 am
Nonstop6h 12m
Seattle/Tacoma Intl
Sat 5/30
7:05 am-7:28 pm
1 stop9h 23m
$336
New YorkSeattle
JFK - SEA
JFKSEA
New York John F Kennedy Intl
Tue 7/7
5:38 pm-9:04 pm
Nonstop6h 26m
Seattle/Tacoma Intl
Wed 7/15
10:19 pm-6:39 am
Nonstop5h 20m
$337
Washington, D.C.Portland
IAD - PDX
IADPDX
Washington, D.C. Dulles Intl
Wed 6/3
6:00 am-12:30 pm
1 stop9h 30m
Portland
Fri 6/5
2:06 pm-12:51 am
1 stop7h 45m
$337
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Pennsylvania to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Pennsylvania with our price prediction graph.
IAD-SEA
DCA-SEA
JFK-SEA
EWR-SEA
PHL-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Pennsylvania to Washington
USPA-USWA
IAD-SEA
DCA-SEA
JFK-SEA
EWR-SEA
How far ahead should I book a flight from Pennsylvania to State of Washington?
Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from Pennsylvania to State of Washington. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Pennsylvania to State of Washington?
Currently, November is the cheapest month in which you can book a flight from Pennsylvania to State of Washington (average of $98). Flying from Pennsylvania to State of Washington in May is currently the most expensive (average of $447). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PA to WA?
Find hourly flight availability from Pennsylvania to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to State of Washington as you normally would.
Weekly flight availability from Pennsylvania to State of Washington
Explore weekly flight availability from Pennsylvania to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 30, 2026.
The most flights from USPA to USWA are scheduled on a Tuesday (6 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Pennsylvania to State of Washington?
Reviews of airlines servicing Washington
Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated April 30, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andHawaiian Airlines from Pennsylvania to Washington. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Comfort
7.8
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Comfort
7.8
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Comfort
7.8
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Comfort
7.8
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Comfort
7.8
Food
7.1
Boarding
8.1
Entertainment
7.0
Overall
7.9
Crew
8.5
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Related info for your journey
Find useful and relevant information for your journey from Pennsylvania to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Pennsylvania to Washington
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Washington by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Pennsylvania to Washington by cabin class
Find flights from Pennsylvania to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Pennsylvania and Washington flights
Browse other Pennsylvania and Washington flight options. Last updated on April 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Washington
Find the right flight back to Pennsylvania after your stay in Washington
Pennsylvania to Washington flights
Consider these flights traveling from Pennsylvania to Washington.
Top 7 airlines flying from Pennsylvania to Washington
Discover the top 7 airlines that operate flights from Pennsylvania to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$225 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$119 | Average$409 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$162 | Average$427 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$176 | Average$432 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$178 | Average$492 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$180 | Average$511 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$222 | Average$480 | FlexibilityNo cancel fee | On-time69% |