$140+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Sep 3 — Sep 101
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 August 4, 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 August 4, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/58:00 am
SEA
- DCA
Nonstop5h 20m
Alaska Airlines
Sun 9/68:00 am
DCA
- SEA
Nonstop5h 54m
Alaska Airlines
Deal found 8/2![Alaska Airlines logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/163:56 pm
SEA
- IAD
Nonstop5h 03m
Alaska Airlines
Wed 9/235:57 pm
IAD
- SEA
Nonstop5h 47m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/154:27 pm
SEA
- DCA
1 stop16h 44m
Multiple Airlines
Mon 9/215:00 pm
DCA
- SEA
Nonstop5h 51m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$286
This Expedia deal was found by Cheapflights users on 8/1. 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 9/46:51 pm
SEA
- DCA
1 stop18h 09m
Multiple Airlines
Mon 9/77:00 am
DCA
- SEA
1 stop29h 19m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/47:06 pm
SEA
- DCA
1 stop14h 45m
Multiple Airlines
Sun 9/68:00 am
DCA
- SEA
Nonstop5h 54m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:53 pm
SEA
- IAD
1 stop8h 11m
Frontier
Tue 8/258:59 am
IAD
- SEA
2 stops13h 39m
Frontier
Deal found 7/30![Frontier logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/211:35 pm
SEA
- DCA
1 stop20h 16m
Frontier
Sat 8/296:00 pm
DCA
- SEA
1 stop18h 19m
Frontier
Deal found 8/1![Frontier logo]()
$289
This Super.com deal was found by Cheapflights users on 7/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:36 pm
SEA
- IAD
1 stop28h 25m
Frontier
Tue 9/226:00 am
IAD
- SEA
1 stop30h 42m
Frontier
Deal found 7/30![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/57:06 pm
SEA
- DCA
1 stop14h 45m
Frontier
Sat 9/126:00 pm
DCA
- SEA
2 stops27h 26m
Frontier
Deal found 7/31![Frontier logo]()
$290
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/33:56 pm
SEA
- IAD
Nonstop5h 03m
Alaska Airlines
Wed 9/99:03 am
IAD
- SEA
Nonstop5h 36m
Alaska Airlines
Deal found 8/2![Alaska Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/154:27 pm
SEA
- DCA
1 stop16h 44m
Multiple Airlines
Sat 9/265:00 pm
DCA
- SEA
Nonstop5h 51m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/58:48 am
SEA
- DCA
1 stop9h 12m
Multiple Airlines
Sun 9/67:00 am
DCA
- SEA
1 stop9h 22m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$292
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 August 4, 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 August 4, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/159:35 pm
SEA
- IAD
Nonstop5h 05m
Alaska Airlines
Wed 9/239:03 am
IAD
- SEA
Nonstop5h 36m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$285
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:00 pm
SEA
- IAD
1 stop7h 18m
United Airlines
Tue 9/2212:57 pm
IAD
- SEA
Nonstop5h 46m
United Airlines
Deal found 7/30![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 7/31. 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 9/311:25 am
SEA
- DCA
1 stop8h 00m
Southwest
Sun 9/66:05 am
DCA
- SEA
2 stops9h 55m
Southwest
Deal found 7/31![Southwest logo]()
$310
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:20 am
SEA
- DCA
Nonstop5h 01m
Delta
Wed 8/264:35 pm
DCA
- SEA
Nonstop6h 06m
Delta
Deal found 7/30![Delta logo]()
$335
This JetBlue deal was found by Cheapflights users on 7/31. 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 10/69:40 pm
SEA
- JFK
Nonstop5h 21m
JetBlue
Mon 10/191:20 pm
JFK
- SEA
1 stop12h 18m
JetBlue
Deal found 7/31![JetBlue logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 9/33:56 pm
SEA
- IAD
Nonstop5h 03m
Alaska Airlines
Sun 9/69:03 am
IAD
- SEA
Nonstop5h 36m
Alaska Airlines
Deal found 8/3![Alaska Airlines logo]()
$285
This United Airlines deal was found by Cheapflights users on 8/3. 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 8/2611:00 pm
SEA
- IAD
1 stop7h 23m
United Airlines
Sat 8/291:20 pm
IAD
- SEA
Nonstop5h 46m
United Airlines
Deal found 8/3![United Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:08 pm
PDX
- EWR
1 stop9h 52m
Delta
Tue 9/85:59 pm
EWR
- PDX
1 stop8h 41m
Delta
Deal found 7/30![Delta logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Tue 9/157:24 pm
SEA
- DCA
1 stop19h 35m
Alaska Airlines
Tue 9/225:00 pm
DCA
- SEA
Nonstop5h 51m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 7/31. 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 9/1411:05 pm
SEA
- PHL
1 stop9h 30m
Southwest
Mon 9/214:05 pm
PHL
- SEA
1 stop9h 55m
Southwest
Deal found 7/31![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/32:34 pm
SEA
- IAD
1 stop6h 58m
United Airlines
Sun 9/610:35 am
IAD
- SEA
1 stop8h 32m
United Airlines
Deal found 7/31![United Airlines logo]()
$321
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/36:51 pm
SEA
- DCA
1 stop18h 09m
Alaska Airlines
Sun 9/68:00 am
DCA
- SEA
Nonstop5h 54m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$315
This JetBlue deal was found by Cheapflights users on 8/3. 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 9/199:40 pm
SEA
- JFK
Nonstop5h 24m
JetBlue
Sat 9/265:29 pm
JFK
- SEA
Nonstop6h 15m
JetBlue
Deal found 8/3![JetBlue logo]()
$383
This Southwest deal was found by Cheapflights users on 8/1. 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 9/1711:05 pm
SEA
- PHL
1 stop10h 20m
Southwest
Sat 9/1911:55 am
PHL
- SEA
1 stop7h 45m
Southwest
Deal found 8/1![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 8/2. 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 9/155:50 pm
SEA
- EWR
1 stop9h 10m
Delta
Tue 9/224:59 pm
EWR
- SEA
1 stop8h 06m
Delta
Deal found 8/2![Delta logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/118:41 am
SEA
- IAD
Nonstop5h 13m
Alaska Airlines
Sun 9/137:47 pm
IAD
- SEA
1 stop16h 33m
Alaska Airlines
Deal found 8/2![Alaska Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 7/31. 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 8/2611:15 am
PDX
- EWR
Nonstop5h 16m
United Airlines
Mon 8/317:00 am
EWR
- PDX
Nonstop5h 50m
United Airlines
Deal found 7/31![United Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:00 pm
PDX
- JFK
Nonstop5h 28m
Delta
Sat 10/35:56 pm
JFK
- PDX
Nonstop6h 07m
Delta
Deal found 7/30![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 8/2. 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 9/185:15 am
SEA
- DCA
1 stop6h 35m
Southwest
Sun 9/276:10 am
DCA
- SEA
2 stops10h 30m
Southwest
Deal found 8/2![Southwest logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 9/108:49 pm
SEA
- IAD
1 stop18h 25m
Alaska Airlines
Mon 9/149:03 am
IAD
- SEA
Nonstop5h 36m
Alaska Airlines
Deal found 8/3![Alaska Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 8/3. 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 9/210:35 pm
PDX
- JFK
Nonstop5h 15m
Delta
Wed 9/95:56 pm
JFK
- PDX
Nonstop6h 07m
Delta
Deal found 8/3![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 7/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:05 am
SEA
- DCA
2 stops10h 25m
Southwest
Fri 10/304:20 pm
DCA
- SEA
2 stops11h 35m
Southwest
Deal found 7/30![Southwest logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 8/1. 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 9/299:35 pm
SEA
- IAD
Nonstop5h 05m
Alaska Airlines
Wed 9/309:03 am
IAD
- SEA
Nonstop5h 36m
Alaska Airlines
Deal found 8/1![Alaska Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 8/1. 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 10/3011:30 pm
PDX
- LGA
1 stop7h 40m
United Airlines
Sun 11/14:59 pm
LGA
- PDX
1 stop9h 10m
United Airlines
Deal found 8/1![United Airlines logo]()
$388
This Delta deal was found by Cheapflights users on 8/3. 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 9/1512:45 pm
PDX
- JFK
Nonstop5h 40m
Delta
Sat 10/35:56 pm
JFK
- PDX
Nonstop6h 07m
Delta
Deal found 8/3![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 8/3. 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 9/266:20 am
PDX
- LGA
2 stops10h 50m
Southwest
Tue 9/2910:15 am
LGA
- PDX
1 stop10h 30m
Southwest
Deal found 8/3![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:15 pm
PDX
- JFK
Nonstop5h 14m
Delta
Tue 10/278:40 am
JFK
- PDX
Nonstop6h 16m
Delta
Deal found 7/30![Delta logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:49 pm
SEA
- IAD
1 stop18h 25m
Alaska Airlines
Mon 9/217:00 am
IAD
- SEA
Nonstop5h 37m
Alaska Airlines
Deal found 7/30![Alaska Airlines logo]()
$340
This Southwest deal was found by Cheapflights users on 7/31. 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 11/125:15 am
SEA
- DCA
2 stops9h 45m
Southwest
Tue 11/174:00 pm
DCA
- SEA
2 stops9h 30m
Southwest
Deal found 7/31![Southwest logo]()
$387
This Delta deal was found by Cheapflights users on 8/3. 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 9/297:10 am
PDX
- JFK
Nonstop5h 32m
Delta
Tue 10/138:40 am
JFK
- PDX
Nonstop6h 16m
Delta
Deal found 8/3![Delta logo]()
$357
Last-minute flights from Washington to PennsylvaniaDiscover last-minute flight deals from Washington to Pennsylvania. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Pennsylvania. Data last updated August 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/211:35 pm
SEA
- DCA
1 stop20h 16m
Frontier
Sat 8/296:00 pm
DCA
- SEA
1 stop18h 19m
Frontier
Deal found 8/1![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:53 pm
SEA
- IAD
1 stop8h 11m
Frontier
Tue 8/258:59 am
IAD
- SEA
2 stops13h 39m
Frontier
Deal found 7/30![Frontier logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/33:56 pm
SEA
- IAD
Nonstop5h 03m
Alaska Airlines
Wed 9/99:03 am
IAD
- SEA
Nonstop5h 36m
Alaska Airlines
Deal found 8/2![Alaska Airlines logo]()
$290
This Expedia deal was found by Cheapflights users on 8/1. 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 9/46:51 pm
SEA
- DCA
1 stop18h 09m
Multiple Airlines
Mon 9/77:00 am
DCA
- SEA
1 stop29h 19m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/47:06 pm
SEA
- DCA
1 stop14h 45m
Multiple Airlines
Sun 9/68:00 am
DCA
- SEA
Nonstop5h 54m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$288
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/58:00 am
SEA
- DCA
Nonstop5h 20m
Alaska Airlines
Sun 9/68:00 am
DCA
- SEA
Nonstop5h 54m
Alaska Airlines
Deal found 8/2![Alaska Airlines logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/57:06 pm
SEA
- DCA
1 stop14h 45m
Frontier
Sat 9/126:00 pm
DCA
- SEA
2 stops27h 26m
Frontier
Deal found 7/31![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/58:48 am
SEA
- DCA
1 stop9h 12m
Multiple Airlines
Sun 9/67:00 am
DCA
- SEA
1 stop9h 22m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$292
This Super.com deal was found by Cheapflights users on 7/30. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:36 pm
SEA
- IAD
1 stop28h 25m
Frontier
Tue 9/226:00 am
IAD
- SEA
1 stop30h 42m
Frontier
Deal found 7/30![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/154:27 pm
SEA
- DCA
1 stop16h 44m
Multiple Airlines
Tue 9/225:00 pm
DCA
- SEA
Nonstop5h 51m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/154:27 pm
SEA
- DCA
1 stop16h 44m
Multiple Airlines
Sat 9/265:00 pm
DCA
- SEA
Nonstop5h 51m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$291
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/173:56 pm
SEA
- IAD
Nonstop5h 03m
Alaska Airlines
Tue 9/227:00 am
IAD
- SEA
Nonstop5h 37m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$285
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 August 4, 2026.
Search for one-way flight options from Washington to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/1012:38 pm
PDX
- EWR
2 stops33h 23m
Frontier
Deal found 8/3![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sun 9/1312:38 pm
PDX
- EWR
2 stops33h 23m
Frontier
Deal found 8/3![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/1411:02 am
PDX
- EWR
2 stops34h 59m
Frontier
Deal found 8/3![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:38 pm
PDX
- EWR
2 stops33h 23m
Frontier
Deal found 7/30![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Sun 11/13:47 pm
PDX
- EWR
2 stops39h 40m
Frontier
Deal found 8/1![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:38 pm
PDX
- EWR
2 stops33h 23m
Frontier
Deal found 7/30![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/1112:38 pm
PDX
- EWR
2 stops33h 23m
Frontier
Deal found 7/31![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:37 pm
SEA
- PHL
2 stops21h 52m
Frontier
Deal found 7/30![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/2412:38 pm
PDX
- EWR
2 stops33h 23m
Frontier
Deal found 8/1![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:37 pm
SEA
- PHL
2 stops21h 52m
Frontier
Deal found 7/30![Frontier logo]()
$166
This Southwest deal was found by Cheapflights users on 7/31. 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 9/65:10 am
SEA
- PHL
2 stops15h 55m
Southwest
Deal found 7/31![Southwest logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/294:27 pm
SEA
- PHL
2 stops37h 14m
Frontier
Deal found 8/1![Frontier logo]()
$168
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 August 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $285 (Alaska Airlines) |
One-way from | $140 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $473 |
Good round-trip deal | $377 or less |
Good one-way deal | $204 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 August 4, 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
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Tue 9/15
9:35 pm-5:40 am
Nonstop5h 05m
Washington, D.C. Dulles Intl
Wed 9/23
9:03 am-11:39 am
Nonstop5h 36m
$285
Quickest round-trip
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 9/3
3:56 pm-11:59 pm
Nonstop5h 03m
Washington, D.C. Dulles Intl
Sun 9/6
9:03 am-11:39 am
Nonstop5h 36m
$285
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Tue 9/15
11:00 pm-9:18 am
1 stop7h 18m
Washington, D.C. Dulles Intl
Tue 9/22
12:57 pm-3:43 pm
Nonstop5h 46m
$295
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Wed 8/26
11:00 pm-9:23 am
1 stop7h 23m
Washington, D.C. Dulles Intl
Sat 8/29
1:20 pm-4:06 pm
Nonstop5h 46m
$295
SeattleWashington, D.C.
SEA - DCA
SEADCA
Seattle/Tacoma Intl
Thu 9/3
11:25 am-10:25 pm
1 stop8h 00m
Washington, D.C. Reagan-National
Sun 9/6
6:05 am-1:00 pm
2 stops9h 55m
$310
SeattleWashington, D.C.
SEA - DCA
SEADCA
Seattle/Tacoma Intl
Tue 9/15
7:24 pm-5:59 pm
1 stop19h 35m
Washington, D.C. Reagan-National
Tue 9/22
5:00 pm-7:51 pm
Nonstop5h 51m
$315
SeattleWashington, D.C.
SEA - DCA
SEADCA
Seattle/Tacoma Intl
Thu 9/3
6:51 pm-4:00 pm
1 stop18h 09m
Washington, D.C. Reagan-National
Sun 9/6
8:00 am-10:54 am
Nonstop5h 54m
$315
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Fri 9/11
8:41 am-4:54 pm
Nonstop5h 13m
Washington, D.C. Dulles Intl
Sun 9/13
7:47 pm-9:20 am
1 stop16h 33m
$315
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 9/10
8:49 pm-6:14 pm
1 stop18h 25m
Washington, D.C. Dulles Intl
Mon 9/14
9:03 am-11:39 am
Nonstop5h 36m
$315
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Tue 9/29
9:35 pm-5:40 am
Nonstop5h 05m
Washington, D.C. Dulles Intl
Wed 9/30
9:03 am-11:39 am
Nonstop5h 36m
$320
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.
PDX-EWR
SEA-PHL
SEA-DCA
SEA-JFK
SEA-IAD
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
PDX-EWR
SEA-PHL
SEA-DCA
SEA-JFK
What is the cheapest month to book a flight from State of Washington to Pennsylvania?
Currently, February is the cheapest month in which you can book a flight from State of Washington to Pennsylvania (average of $363). Flying from State of Washington to Pennsylvania in December is currently the most expensive (average of $495). 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 August 4, 2026.
It’s typically best to fly out from State of Washington to Pennsylvania at noon. Doing so could potentially save you 46% 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 August 4, 2026.
The most flights from USWA to USPA are scheduled on a Friday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from State of Washington to Pennsylvania?
Airfare is below average for this route at the moment.
State of Washington to Pennsylvania flights typically cost between $373 and $586 in August.The cheapest round-trip price found within the last 5 days was $332 on Frontier (Aug 18-Aug 27).
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 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 August 4, 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.
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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 August 4, 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 August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$433 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$149 | Average$309 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$456 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$531 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$193 | Average$429 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$198 | Average$443 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$238 | Average$507 | FlexibilityNo cancel fee | On-time69% |