$128+ Cheap flights from Washington to Pennsylvania
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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
May 30 — Jun 61
Round-trip
1 adult, Economy
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Cheapest flights from Washington to PennsylvaniaExplore the most affordable flight options available from Washington to Pennsylvania. 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 Washington to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.
This Delta deal was found by Cheapflights users on 4/24. 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.
Thu 6/44:05 pm
SEA
- IAD
Nonstop5h 08m
Delta
Wed 6/107:00 am
IAD
- SEA
Nonstop5h 45m
Delta
Deal found 4/24![Delta logo]()
$245
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:50 pm
SEA
- DCA
1 stop23h 08m
Frontier
Tue 5/126:00 pm
DCA
- SEA
1 stop18h 49m
Frontier
Deal found 4/25![Frontier logo]()
$246
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 6/48:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Tue 6/99:55 am
IAD
- SEA
1 stop27h 40m
Frontier
Deal found 4/26![Frontier logo]()
$247
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:41 pm
SEA
- DCA
1 stop23h 18m
Frontier
Sun 6/147:00 am
DCA
- SEA
1 stop29h 48m
Frontier
Deal found 4/27![Frontier logo]()
$250
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 4/25![Frontier logo]()
$250
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Mon 6/87:00 am
DCA
- SEA
1 stop10h 01m
Frontier
Deal found 4/28![Frontier logo]()
$255
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.
Fri 9/46:00 pm
SEA
- IAD
1 stop8h 25m
United Airlines
Mon 9/712:35 pm
IAD
- SEA
Nonstop5h 45m
United Airlines
Deal found 4/27![United Airlines logo]()
$255
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Mon 6/17:00 am
DCA
- SEA
1 stop10h 01m
Frontier
Deal found 4/26![Frontier logo]()
$256
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:12 pm
SEA
- IAD
1 stop9h 13m
Frontier
Wed 6/179:55 am
IAD
- SEA
1 stop27h 40m
Frontier
Deal found 4/25![Frontier logo]()
$256
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:22 am
SEA
- IAD
Nonstop5h 13m
Multiple Airlines
Sun 6/79:12 am
IAD
- SEA
1 stop28h 24m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$258
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:12 pm
SEA
- IAD
1 stop9h 13m
Frontier
Sun 6/149:55 am
IAD
- SEA
1 stop27h 40m
Frontier
Deal found 4/27![Frontier logo]()
$259
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/117:41 pm
SEA
- DCA
1 stop23h 18m
Frontier
Sun 6/146:00 pm
DCA
- SEA
1 stop18h 48m
Frontier
Deal found 4/29![Frontier logo]()
$261
Best flights from Washington to PennsylvaniaDiscover carefully curated flight deals from Washington to Pennsylvania 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 Washington to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2026.
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.
Fri 5/293:30 pm
SEA
- EWR
Nonstop5h 29m
Alaska Airlines
Wed 6/37:30 am
EWR
- SEA
Nonstop6h 10m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$278
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.
Fri 7/104:00 pm
SEA
- IAD
Nonstop5h 03m
Delta
Sun 7/127:00 am
IAD
- SEA
Nonstop5h 45m
Delta
Deal found 4/26![Delta logo]()
$292
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.
Wed 6/310:40 pm
PDX
- LGA
1 stop7h 31m
United Airlines
Tue 6/92:51 pm
LGA
- PDX
1 stop8h 28m
United Airlines
Deal found 4/25![United Airlines logo]()
$297
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.
Thu 6/411:05 pm
SEA
- DCA
1 stop9h 05m
Southwest
Wed 6/104:55 pm
DCA
- SEA
2 stops10h 45m
Southwest
Deal found 4/25![Southwest logo]()
$335
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:10 am
PDX
- LGA
1 stop8h 54m
American Airlines
Sun 6/146:46 pm
LGA
- PDX
1 stop9h 04m
American Airlines
Deal found 4/29![American Airlines logo]()
$422
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:52 pm
SEA
- JFK
Nonstop5h 21m
JetBlue
Mon 5/255:29 pm
JFK
- SEA
Nonstop6h 27m
JetBlue
Deal found 4/26![JetBlue logo]()
$437
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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 6/119:13 am
SEA
- IAD
Nonstop4h 58m
Alaska Airlines
Mon 6/156:03 am
IAD
- SEA
Nonstop5h 45m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$290
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.
Wed 6/37:15 am
SEA
- JFK
Nonstop5h 30m
Delta
Tue 6/94:50 pm
JFK
- SEA
Nonstop6h 29m
Delta
Deal found 4/26![Delta logo]()
$297
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.
Fri 5/2911:20 pm
SEA
- EWR
1 stop7h 22m
United Airlines
Mon 6/18:30 pm
EWR
- SEA
Nonstop6h 14m
United Airlines
Deal found 4/27![United Airlines logo]()
$308
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.
Fri 6/511:30 pm
SEA
- IAD
Nonstop5h 04m
Alaska Airlines
Tue 6/97:37 pm
IAD
- SEA
1 stop16h 42m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$295
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.
Mon 9/1410:47 pm
SEA
- LGA
1 stop8h 21m
United Airlines
Sat 9/195:15 pm
LGA
- SEA
1 stop8h 27m
United Airlines
Deal found 4/25![United Airlines logo]()
$317
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:20 am
SEA
- PHL
Nonstop5h 15m
Delta
Mon 6/86:45 pm
PHL
- SEA
Nonstop6h 14m
Delta
Deal found 4/27![Delta logo]()
$329
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.
Wed 8/267:10 am
SEA
- LGA
2 stops10h 05m
Southwest
Sun 8/307:15 am
LGA
- SEA
1 stop12h 25m
Southwest
Deal found 4/25![Southwest logo]()
$378
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.
Sun 6/710:50 pm
SEA
- JFK
Nonstop5h 26m
Alaska Airlines
Tue 6/98:15 pm
JFK
- SEA
Nonstop6h 24m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 4/24. 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.
Thu 10/229:50 pm
SEA
- PHL
Nonstop5h 13m
Delta
Sun 10/257:05 am
PHL
- SEA
Nonstop6h 19m
Delta
Deal found 4/24![Delta logo]()
$329
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.
Tue 8/1811:56 pm
SEA
- DCA
1 stop8h 29m
United Airlines
Sun 8/236:00 pm
DCA
- SEA
1 stop7h 42m
United Airlines
Deal found 4/27![United Airlines logo]()
$330
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:25 pm
SEA
- LGA
2 stops11h 05m
Southwest
Tue 8/182:30 pm
LGA
- SEA
1 stop8h 55m
Southwest
Deal found 4/29![Southwest logo]()
$392
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.
Thu 6/49:22 pm
SEA
- PHL
Nonstop5h 13m
Alaska Airlines
Wed 6/107:33 am
PHL
- SEA
Nonstop5h 59m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$329
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 9/1811:53 pm
SEA
- PHL
1 stop7h 40m
Delta
Sun 9/207:05 am
PHL
- SEA
Nonstop5h 59m
Delta
Deal found 4/28![Delta logo]()
$339
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.
Sun 5/3110:52 pm
PDX
- EWR
Nonstop5h 14m
United Airlines
Sat 6/66:43 pm
EWR
- PDX
Nonstop6h 03m
United Airlines
Deal found 4/25![United Airlines logo]()
$342
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.
Tue 9/227:05 am
PDX
- LGA
2 stops10h 20m
Southwest
Thu 10/16:55 am
LGA
- PDX
1 stop10h 45m
Southwest
Deal found 4/25![Southwest logo]()
$397
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.
Thu 8/206:48 pm
SEA
- JFK
1 stop8h 16m
Alaska Airlines
Sat 8/297:25 am
JFK
- SEA
Nonstop6h 09m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$336
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 8/59:30 pm
SEA
- PHL
Nonstop5h 23m
Delta
Thu 8/136:40 pm
PHL
- SEA
1 stop8h 21m
Delta
Deal found 4/25![Delta logo]()
$339
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.
Wed 6/310:33 am
PDX
- EWR
Nonstop5h 18m
United Airlines
Tue 6/93:08 pm
EWR
- PDX
1 stop8h 11m
United Airlines
Deal found 4/25![United Airlines logo]()
$352
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.
Mon 8/178:20 pm
SEA
- LGA
2 stops11h 00m
Southwest
Sat 8/221:10 pm
LGA
- SEA
1 stop8h 05m
Southwest
Deal found 4/26![Southwest logo]()
$407
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:40 am
PDX
- EWR
Nonstop5h 28m
Alaska Airlines
Sat 5/305:08 pm
EWR
- PDX
Nonstop6h 07m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$337
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:20 am
SEA
- PHL
1 stop8h 23m
Delta
Thu 8/137:05 am
PHL
- SEA
Nonstop5h 59m
Delta
Deal found 4/27![Delta logo]()
$339
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.
Sat 7/1110:40 pm
PDX
- EWR
1 stop8h 50m
United Airlines
Mon 7/136:30 am
EWR
- PDX
Nonstop5h 55m
United Airlines
Deal found 4/27![United Airlines logo]()
$357
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 6/27:40 am
PDX
- EWR
Nonstop5h 28m
Alaska Airlines
Sat 6/65:08 pm
EWR
- PDX
Nonstop6h 07m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$337
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.
Thu 7/97:20 am
SEA
- PHL
1 stop11h 00m
Delta
Wed 7/157:05 am
PHL
- SEA
Nonstop5h 56m
Delta
Deal found 4/26![Delta logo]()
$339
Last-minute flights from Washington to PennsylvaniaDiscover last-minute flight deals from Washington to Pennsylvania. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Pennsylvania. Data last updated April 30, 2026 and is based on user searches.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:50 pm
SEA
- DCA
1 stop23h 08m
Frontier
Tue 5/126:00 pm
DCA
- SEA
1 stop18h 49m
Frontier
Deal found 4/25![Frontier logo]()
$246
This Frontier deal was found by Cheapflights users on 4/24. 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.
Tue 5/197:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Sun 5/247:00 am
DCA
- SEA
1 stop10h 01m
Frontier
Deal found 4/24![Frontier logo]()
$250
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Sun 5/247:00 am
DCA
- SEA
1 stop10h 01m
Frontier
Deal found 4/27![Frontier logo]()
$255
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 4/25![Frontier logo]()
$250
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Fri 5/291:59 pm
DCA
- SEA
1 stop23h 07m
Frontier
Deal found 4/29![Frontier logo]()
$261
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Mon 6/17:00 am
DCA
- SEA
1 stop10h 01m
Frontier
Deal found 4/26![Frontier logo]()
$256
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/248:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 4/26![Frontier logo]()
$256
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.
Sun 5/247:50 pm
SEA
- DCA
1 stop14h 09m
Frontier
Fri 6/57:00 am
DCA
- SEA
1 stop30h 06m
Frontier
Deal found 4/27![Frontier logo]()
$263
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:35 pm
SEA
- IAD
1 stop8h 15m
American Airlines
Fri 6/57:25 pm
IAD
- SEA
1 stop8h 34m
American Airlines
Deal found 4/29![American Airlines logo]()
$265
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Wed 6/109:55 am
IAD
- SEA
1 stop27h 40m
Frontier
Deal found 4/29![Frontier logo]()
$261
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Thu 6/49:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 4/25![Frontier logo]()
$264
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2910:50 am
SEA
- DCA
1 stop8h 09m
American Airlines
Fri 6/55:00 pm
DCA
- SEA
1 stop8h 58m
American Airlines
Deal found 4/29![American Airlines logo]()
$265
One-way flights from Washington to PennsylvaniaSearch for one-way flight options from Washington to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
Search for one-way flight options from Washington to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:46 pm
PDX
- EWR
2 stops28h 32m
Frontier
Deal found 4/28![Frontier logo]()
$128
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 5/96:52 pm
SEA
- DCA
1 stop15h 07m
Frontier
Deal found 4/28![Frontier logo]()
$136
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:50 pm
SEA
- IAD
2 stops17h 31m
Frontier
Deal found 4/28![Frontier logo]()
$136
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:41 pm
SEA
- DCA
1 stop23h 18m
Frontier
Deal found 4/27![Frontier logo]()
$137
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/42:38 pm
PDX
- EWR
2 stops31h 40m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$137
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:50 pm
SEA
- DCA
1 stop23h 08m
Frontier
Deal found 4/28![Frontier logo]()
$138
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:55 am
SEA
- EWR
Nonstop5h 38m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$139
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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.
Fri 5/293:30 pm
SEA
- EWR
Nonstop5h 29m
Alaska Airlines
Deal found 4/24![Alaska Airlines logo]()
$140
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.
Mon 5/117:50 pm
SEA
- PHL
2 stops48h 55m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$142
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:50 pm
SEA
- IAD
2 stops17h 31m
Frontier
Deal found 4/26![Frontier logo]()
$142
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:50 pm
SEA
- DCA
1 stop23h 08m
Frontier
Deal found 4/28![Frontier logo]()
$143
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.
Fri 6/54:05 pm
SEA
- IAD
Nonstop5h 08m
Delta
Deal found 4/29![Delta logo]()
$143
Find flight deals from Washington to Pennsylvania
Keep the following information in mind while searching for Washington to Pennsylvania flight deals. Data was last updated April 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $245 (Delta) |
One-way from | $128 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $447 |
Good round-trip deal | $405 or less |
Good one-way deal | $200 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Pennsylvania 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 Washington to Pennsylvania that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleNewark
SEA - EWR
SEAEWR
Seattle/Tacoma Intl
Fri 5/29
3:30 pm-11:59 pm
Nonstop5h 29m
Newark
Wed 6/3
7:30 am-10:40 am
Nonstop6h 10m
$278
Quickest round-trip
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 6/11
9:13 am-5:11 pm
Nonstop4h 58m
Washington, D.C. Dulles Intl
Mon 6/15
6:03 am-8:48 am
Nonstop5h 45m
$290
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Fri 7/10
4:00 pm-12:03 am
Nonstop5h 03m
Washington, D.C. Dulles Intl
Sun 7/12
7:00 am-9:45 am
Nonstop5h 45m
$292
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Fri 6/5
11:30 pm-7:34 am
Nonstop5h 04m
Washington, D.C. Dulles Intl
Tue 6/9
7:37 pm-9:19 am
1 stop16h 42m
$295
PortlandNew York
PDX - LGA
PDXLGA
Portland
Wed 6/3
10:40 pm-9:11 am
1 stop7h 31m
New York LaGuardia
Tue 6/9
2:51 pm-8:19 pm
1 stop8h 28m
$297
SeattleNew York
SEA - JFK
SEAJFK
Seattle/Tacoma Intl
Wed 6/3
7:15 am-3:45 pm
Nonstop5h 30m
New York John F Kennedy Intl
Tue 6/9
4:50 pm-8:19 pm
Nonstop6h 29m
$297
SeattleNewark
SEA - EWR
SEAEWR
Seattle/Tacoma Intl
Fri 5/29
11:20 pm-9:42 am
1 stop7h 22m
Newark
Mon 6/1
8:30 pm-11:44 pm
Nonstop6h 14m
$308
SeattleNew York
SEA - JFK
SEAJFK
Seattle/Tacoma Intl
Sun 6/7
10:50 pm-7:16 am
Nonstop5h 26m
New York John F Kennedy Intl
Tue 6/9
8:15 pm-11:39 pm
Nonstop6h 24m
$316
SeattleNew York
SEA - LGA
SEALGA
Seattle/Tacoma Intl
Mon 9/14
10:47 pm-10:08 am
1 stop8h 21m
New York LaGuardia
Sat 9/19
5:15 pm-10:42 pm
1 stop8h 27m
$317
SeattlePhiladelphia
SEA - PHL
SEAPHL
Seattle/Tacoma Intl
Thu 6/4
9:20 am-5:35 pm
Nonstop5h 15m
Philadelphia
Mon 6/8
6:45 pm-9:59 pm
Nonstop6h 14m
$329
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Pennsylvania
Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Washington with our price prediction graph.
SEA-IAD
SEA-DCA
SEA-LGA
SEA-JFK
SEA-EWR
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 Washington to Pennsylvania
USWA-USPA
SEA-IAD
SEA-DCA
SEA-LGA
SEA-JFK
How far ahead should I book a flight from State of Washington to Pennsylvania?
The price you pay for your flight from State of Washington to Pennsylvania may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from State of Washington to Pennsylvania?
Currently, September is the cheapest month in which you can book a flight from State of Washington to Pennsylvania (average of $42). Flying from State of Washington to Pennsylvania in June is currently the most expensive (average of $1,119). 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 WA to PA?
Find hourly flight availability from Washington to Pennsylvania. 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.
It’s typically best to fly out from State of Washington to Pennsylvania in the evening. Doing so could potentially save you 44% on the flight price compared to flying in the afternoon, which is usually more expensive.
Weekly flight availability from State of Washington to Pennsylvania
Explore weekly flight availability from Washington to Pennsylvania. 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 USWA to USPA are scheduled on a Monday (8 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from State of Washington to Pennsylvania?
Reviews of airlines servicing Pennsylvania
Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated April 30, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta from Washington to Pennsylvania to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Washington to Pennsylvania. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Washington to Pennsylvania
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Pennsylvania by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington to Pennsylvania by cabin class
Find flights from Washington to Pennsylvania, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Pennsylvania flights
Browse other Washington and Pennsylvania 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 Pennsylvania
Find the right flight back to Washington after your stay in Pennsylvania
Washington to Pennsylvania flights
Consider these flights traveling from Washington to Pennsylvania.
Top 7 airlines flying from Washington to Pennsylvania
Discover the top 7 airlines that operate flights from Washington to Pennsylvania. 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$139 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$388 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$178 | Average$455 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$178 | Average$436 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$193 | Average$504 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$194 | Average$542 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$222 | Average$442 | FlexibilityNo cancel fee | On-time85% |