$82+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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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 March 15, 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 March 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/156:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Tue 4/217:12 pm
SEA
- DCA
1 stop23h 47m
Frontier
Deal found 3/11![Frontier logo]()
$197
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/215:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Tue 4/288:00 am
SEA
- IAD
Nonstop5h 11m
United Airlines
Deal found 3/12![United Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/136:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Wed 4/158:07 pm
SEA
- DCA
1 stop13h 53m
Frontier
Deal found 3/12![Frontier logo]()
$198
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 4/227:20 pm
IAD
- SEA
Nonstop5h 45m
Alaska Airlines
Wed 4/299:41 pm
SEA
- IAD
Nonstop5h 09m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$199
This Delta deal was found by Cheapflights users on 3/12. 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 4/145:34 pm
DCA
- SEA
1 stop7h 15m
Delta
Mon 4/2010:40 pm
SEA
- DCA
1 stop8h 39m
Delta
Deal found 3/12![Delta logo]()
$199
This Southwest deal was found by Cheapflights users on 3/11. 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.
Sun 5/38:15 pm
PIT
- SEA
1 stop6h 55m
Southwest
Tue 5/59:20 am
SEA
- PIT
1 stop10h 35m
Southwest
Deal found 3/11![Southwest logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/136:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Sat 4/187:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Deal found 3/12![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/156:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Thu 4/167:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Deal found 3/11![Frontier logo]()
$203
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/257:10 am
IAD
- SEA
Nonstop5h 48m
Alaska Airlines
Mon 5/43:55 pm
SEA
- IAD
Nonstop5h 14m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$204
This Southwest deal was found by Cheapflights users on 3/10. 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.
Sat 4/2512:15 pm
DCA
- SEA
2 stops11h 20m
Southwest
Wed 4/296:00 am
SEA
- DCA
1 stop7h 15m
Southwest
Deal found 3/10![Southwest logo]()
$204
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/305:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Sun 5/310:41 pm
SEA
- IAD
Nonstop5h 09m
United Airlines
Deal found 3/11![United Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sat 4/47:00 am
IAD
- SEA
Nonstop5h 53m
Hawaiian Airlines
Wed 4/159:40 pm
SEA
- IAD
Nonstop5h 00m
Hawaiian Airlines
Deal found 3/13![Hawaiian Airlines logo]()
$207
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 March 15, 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 March 15, 2026.
This Delta deal was found by Cheapflights users on 3/14. 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 4/217:00 am
IAD
- SEA
Nonstop5h 54m
Delta
Wed 4/293:59 pm
SEA
- IAD
Nonstop4h 56m
Delta
Deal found 3/14![Delta logo]()
$199
This Southwest deal was found by Cheapflights users on 3/12. 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 4/217:10 pm
PIT
- SEA
1 stop8h 00m
Southwest
Fri 4/2411:55 pm
SEA
- PIT
1 stop7h 10m
Southwest
Deal found 3/12![Southwest logo]()
$219
This United Airlines deal was found by Cheapflights users on 3/11. 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 5/21:10 pm
EWR
- SEA
Nonstop6h 02m
United Airlines
Mon 5/117:25 am
SEA
- EWR
Nonstop5h 24m
United Airlines
Deal found 3/11![United Airlines logo]()
$248
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 4/287:17 pm
PIT
- SEA
Nonstop5h 18m
Alaska Airlines
Sat 5/210:30 am
SEA
- PIT
Nonstop4h 51m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$257
This JetBlue deal was found by Cheapflights users on 3/12. 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.
Fri 7/36:30 am
JFK
- PDX
1 stop9h 34m
JetBlue
Fri 7/1011:18 pm
PDX
- JFK
1 stop7h 41m
JetBlue
Deal found 3/12![JetBlue logo]()
$343
This Delta deal was found by Cheapflights users on 3/12. 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 4/177:00 am
IAD
- SEA
Nonstop5h 54m
Delta
Mon 4/2011:14 pm
SEA
- IAD
1 stop8h 04m
Delta
Deal found 3/12![Delta logo]()
$224
This Southwest deal was found by Cheapflights users on 3/10. 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 4/71:25 pm
PIT
- SEA
2 stops12h 05m
Southwest
Tue 4/1411:45 pm
SEA
- PIT
2 stops9h 05m
Southwest
Deal found 3/10![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/238:30 pm
EWR
- SEA
Nonstop6h 16m
United Airlines
Tue 4/2810:55 pm
SEA
- EWR
Nonstop5h 21m
United Airlines
Deal found 3/12![United Airlines logo]()
$248
This Delta deal was found by Cheapflights users on 3/10. 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 4/284:39 pm
DCA
- SEA
Nonstop5h 51m
Delta
Sun 5/37:30 am
SEA
- DCA
Nonstop4h 57m
Delta
Deal found 3/10![Delta logo]()
$238
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 5/69:00 am
EWR
- SEA
Nonstop6h 11m
Alaska Airlines
Tue 5/122:52 pm
SEA
- EWR
Nonstop5h 37m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$267
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/83:15 pm
EWR
- SEA
1 stop10h 27m
United Airlines
Mon 4/1310:55 pm
SEA
- EWR
Nonstop5h 21m
United Airlines
Deal found 3/11![United Airlines logo]()
$258
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/297:59 am
EWR
- SEA
1 stop9h 43m
Alaska Airlines
Sat 5/210:09 pm
SEA
- EWR
Nonstop5h 30m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$272
This Southwest deal was found by Cheapflights users on 3/12. 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 4/166:00 am
LGA
- SEA
1 stop10h 05m
Southwest
Tue 4/2111:45 pm
SEA
- LGA
1 stop9h 50m
Southwest
Deal found 3/12![Southwest logo]()
$287
This Delta deal was found by Cheapflights users on 3/11. 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 4/299:40 am
DCA
- SEA
1 stop7h 37m
Delta
Wed 5/67:30 am
SEA
- DCA
Nonstop4h 57m
Delta
Deal found 3/11![Delta logo]()
$268
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 4/287:29 am
EWR
- SEA
Nonstop6h 07m
Alaska Airlines
Sun 5/310:09 pm
SEA
- EWR
Nonstop5h 30m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/83:07 pm
EWR
- PDX
1 stop8h 35m
United Airlines
Wed 4/151:39 pm
PDX
- EWR
1 stop8h 18m
United Airlines
Deal found 3/11![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 3/12. 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.
Sat 4/252:10 pm
LGA
- SEA
1 stop9h 25m
Southwest
Sat 5/211:55 pm
SEA
- LGA
1 stop8h 25m
Southwest
Deal found 3/12![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 3/11. 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 4/237:00 am
IAD
- SEA
Nonstop5h 54m
Delta
Sat 5/26:00 am
SEA
- IAD
1 stop7h 30m
Delta
Deal found 3/11![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 3/12. 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 5/14:59 pm
LGA
- SEA
1 stop9h 00m
United Airlines
Tue 5/57:00 am
SEA
- LGA
1 stop7h 13m
United Airlines
Deal found 3/12![United Airlines logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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 4/226:56 pm
IAD
- PDX
1 stop17h 52m
Alaska Airlines
Sat 4/251:52 pm
PDX
- IAD
1 stop7h 17m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/12. 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 4/233:40 pm
LGA
- SEA
1 stop11h 25m
Southwest
Tue 4/289:20 am
SEA
- LGA
2 stops10h 25m
Southwest
Deal found 3/12![Southwest logo]()
$298
This Delta deal was found by Cheapflights users on 3/11. 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 4/217:45 am
JFK
- SEA
Nonstop6h 13m
Delta
Sun 4/2610:40 pm
SEA
- JFK
Nonstop5h 13m
Delta
Deal found 3/11![Delta logo]()
$296
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/106:52 pm
EWR
- PDX
Nonstop6h 07m
United Airlines
Mon 4/1310:56 pm
PDX
- EWR
1 stop7h 14m
United Airlines
Deal found 3/10![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/14. 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 4/238:40 am
PIT
- SEA
2 stops13h 25m
Southwest
Sun 4/2611:55 pm
SEA
- PIT
1 stop7h 05m
Southwest
Deal found 3/14![Southwest logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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 5/17:17 pm
PIT
- SEA
Nonstop5h 18m
Alaska Airlines
Tue 5/510:30 am
SEA
- PIT
Nonstop4h 51m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 3/11. 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 4/299:39 am
EWR
- SEA
1 stop7h 38m
Delta
Sat 5/212:10 pm
SEA
- EWR
1 stop8h 24m
Delta
Deal found 3/11![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/17:50 am
EWR
- SEA
Nonstop6h 12m
United Airlines
Wed 4/810:55 pm
SEA
- EWR
Nonstop5h 21m
United Airlines
Deal found 3/10![United Airlines logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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 5/84:46 pm
JFK
- SEA
1 stop10h 04m
Alaska Airlines
Mon 5/113:44 pm
SEA
- JFK
1 stop11h 19m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 3/12. 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 4/287:00 pm
JFK
- SEA
Nonstop6h 31m
Delta
Sat 5/24:00 pm
SEA
- JFK
Nonstop5h 20m
Delta
Deal found 3/12![Delta logo]()
$297
This United Airlines deal was found by Cheapflights users on 3/10. 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 6/310:24 am
EWR
- SEA
1 stop8h 15m
United Airlines
Wed 6/1010:40 pm
SEA
- EWR
1 stop7h 32m
United Airlines
Deal found 3/10![United Airlines logo]()
$307
Last-minute flights from Pennsylvania to WashingtonDiscover last-minute flight deals from Pennsylvania to Washington. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Washington. Data last updated March 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/31:00 pm
DCA
- SEA
1 stop25h 37m
Frontier
Wed 4/158:07 pm
SEA
- DCA
1 stop13h 53m
Frontier
Deal found 3/13![Frontier logo]()
$211
This Southwest deal was found by Cheapflights users on 3/10. 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 4/77:00 pm
DCA
- SEA
1 stop8h 10m
Southwest
Tue 4/146:00 am
SEA
- DCA
2 stops9h 40m
Southwest
Deal found 3/10![Southwest logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/136:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Wed 4/158:07 pm
SEA
- DCA
1 stop13h 53m
Frontier
Deal found 3/12![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/136:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Sat 4/187:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Deal found 3/12![Frontier logo]()
$202
This Delta deal was found by Cheapflights users on 3/12. 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 4/145:34 pm
DCA
- SEA
1 stop7h 15m
Delta
Mon 4/2710:40 pm
SEA
- DCA
1 stop8h 39m
Delta
Deal found 3/12![Delta logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/156:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Tue 4/217:12 pm
SEA
- DCA
1 stop23h 47m
Frontier
Deal found 3/11![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/156:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Thu 4/167:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Deal found 3/11![Frontier logo]()
$203
This Southwest deal was found by Cheapflights users on 3/12. 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 4/153:40 pm
DCA
- SEA
1 stop11h 30m
Southwest
Tue 4/219:20 am
SEA
- DCA
2 stops11h 05m
Southwest
Deal found 3/12![Southwest logo]()
$210
This Southwest deal was found by Cheapflights users on 3/10. 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.
Sat 4/2512:15 pm
DCA
- SEA
2 stops11h 20m
Southwest
Wed 4/296:00 am
SEA
- DCA
1 stop7h 15m
Southwest
Deal found 3/10![Southwest logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/256:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Fri 5/17:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Deal found 3/14![Frontier logo]()
$207
This Delta deal was found by Cheapflights users on 3/13. 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.
Sat 4/254:39 pm
DCA
- SEA
Nonstop5h 51m
Delta
Fri 5/111:14 pm
SEA
- DCA
1 stop6h 23m
Delta
Deal found 3/13![Delta logo]()
$208
This Delta deal was found by Cheapflights users on 3/11. 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 4/2911:26 am
PIT
- SEA
1 stop11h 33m
Delta
Mon 5/410:40 pm
SEA
- PIT
1 stop10h 05m
Delta
Deal found 3/11![Delta logo]()
$215
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 March 15, 2026.
Search for one-way flight options from Pennsylvania to Washington. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/218:36 pm
PHL
- SEA
1 stop15h 51m
Frontier
Deal found 3/13![Frontier logo]()
$82
This American Airlines deal was found by Cheapflights users on 3/11. 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 4/227:35 pm
PIT
- SEA
1 stop8h 09m
American Airlines
Deal found 3/11![American Airlines logo]()
$84
This Trip.com deal was found by Cheapflights users on 3/11. 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.
Mon 4/208:41 pm
PHL
- SEA
1 stop15h 46m
Frontier
Deal found 3/11![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/1410:29 pm
EWR
- PDX
2 stops39h 34m
Frontier
Deal found 3/11![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/138:25 pm
PHL
- SEA
1 stop16h 02m
Frontier
Deal found 3/10![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/158:41 pm
PHL
- SEA
1 stop15h 46m
Frontier
Deal found 3/12![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 5/810:29 pm
EWR
- PDX
2 stops39h 34m
Frontier
Deal found 3/10![Frontier logo]()
$106
This Booking.com deal was found by Cheapflights users on 3/10. 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.
Thu 4/238:41 pm
PHL
- SEA
1 stop16h 11m
Frontier
Deal found 3/10![Frontier logo]()
$106
This American Airlines deal was found by Cheapflights users on 3/12. 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.
Thu 4/23:13 pm
PIT
- SEA
1 stop10h 56m
American Airlines
Deal found 3/12![American Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 5/56:10 am
PHL
- SEA
2 stops30h 39m
Frontier
Deal found 3/12![Frontier logo]()
$113
This Trip.com deal was found by Cheapflights users on 3/11. 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.
Sun 4/198:36 pm
PHL
- SEA
1 stop21h 29m
Frontier
Deal found 3/11![Frontier logo]()
$114
This Southwest deal was found by Cheapflights users on 3/11. 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 4/66:25 pm
PIT
- SEA
2 stops10h 15m
Southwest
Deal found 3/11![Southwest logo]()
$115
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 March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Kiwi.com) |
One-way from | $82 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $357 |
Good round-trip deal | $326 or less |
Good one-way deal | $200 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 March 15, 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
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Tue 4/21
7:00 am-9:54 am
Nonstop5h 54m
Seattle/Tacoma Intl
Wed 4/29
3:59 pm-11:55 pm
Nonstop4h 56m
$199
PittsburghSeattle
PIT - SEA
PITSEA
Pittsburgh
Tue 4/21
7:10 pm-12:10 am
1 stop8h 00m
Seattle/Tacoma Intl
Fri 4/24
11:55 pm-10:05 am
1 stop7h 10m
$219
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Fri 4/17
7:00 am-9:54 am
Nonstop5h 54m
Seattle/Tacoma Intl
Mon 4/20
11:14 pm-10:18 am
1 stop8h 04m
$224
PittsburghSeattle
PIT - SEA
PITSEA
Pittsburgh
Tue 4/7
1:25 pm-10:30 pm
2 stops12h 05m
Seattle/Tacoma Intl
Tue 4/14
11:45 pm-11:50 am
2 stops9h 05m
$236
Washington, D.C.Seattle
DCA - SEA
DCASEA
Washington, D.C. Reagan-National
Tue 4/28
4:39 pm-7:30 pm
Nonstop5h 51m
Seattle/Tacoma Intl
Sun 5/3
7:30 am-3:27 pm
Nonstop4h 57m
$238
NewarkSeattle
EWR - SEA
EWRSEA
Newark
Sat 5/2
1:10 pm-4:12 pm
Nonstop6h 02m
Seattle/Tacoma Intl
Mon 5/11
7:25 am-3:49 pm
Nonstop5h 24m
$248
NewarkSeattle
EWR - SEA
EWRSEA
Newark
Thu 4/23
8:30 pm-11:46 pm
Nonstop6h 16m
Seattle/Tacoma Intl
Tue 4/28
10:55 pm-7:16 am
Nonstop5h 21m
$248
Quickest round-trip
PittsburghSeattle
PIT - SEA
PITSEA
Pittsburgh
Tue 4/28
7:17 pm-9:35 pm
Nonstop5h 18m
Seattle/Tacoma Intl
Sat 5/2
10:30 am-6:21 pm
Nonstop4h 51m
$257
NewarkSeattle
EWR - SEA
EWRSEA
Newark
Wed 4/8
3:15 pm-10:42 pm
1 stop10h 27m
Seattle/Tacoma Intl
Mon 4/13
10:55 pm-7:16 am
Nonstop5h 21m
$258
NewarkSeattle
EWR - SEA
EWRSEA
Newark
Wed 5/6
9:00 am-12:11 pm
Nonstop6h 11m
Seattle/Tacoma Intl
Tue 5/12
2:52 pm-11:29 pm
Nonstop5h 37m
$267
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.
DCA-SEA
IAD-SEA
PIT-SEA
EWR-SEA
JFK-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
DCA-SEA
IAD-SEA
PIT-SEA
EWR-SEA
What is the cheapest month to book a flight from Pennsylvania to State of Washington?
Currently, February is the cheapest month in which you can book a flight from Pennsylvania to State of Washington (average of $167). Flying from Pennsylvania to State of Washington in September is currently the most expensive (average of $216). 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 March 15, 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 March 15, 2026.
The most flights from USPA to USWA are scheduled on a Saturday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).
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 March 15, 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.
Crew
8.5
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Crew
8.5
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - 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.
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Alternative routes for Pennsylvania to Washington
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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
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Pennsylvania and Washington flights
Browse other Pennsylvania and Washington flight options. Last updated on March 15, 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 8 airlines flying from Pennsylvania to Washington
Discover the top 8 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 March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$226 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$115 | Average$237 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$123 | Average$405 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$157 | Average$431 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$176 | Average$436 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$178 | Average$491 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$180 | Average$510 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$221 | Average$507 | FlexibilityNo cancel fee | On-time69% |