$129+ Cheap flights from Philadelphia (PHL) 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Jul 17 — Jul 241
Round-trip
1 adult, Economy
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Cheapest flights from Philadelphia to WashingtonExplore the most affordable flight options available from Philadelphia to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2026.
Explore the most affordable flight options available from Philadelphia to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2026.
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/127:10 am
PHL
- GEG
1 stop8h 10m
Delta
Mon 9/217:06 pm
GEG
- PHL
1 stop7h 59m
Delta
Deal found 6/16![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/37:05 am
PHL
- GEG
1 stop8h 03m
Delta
Tue 9/85:49 pm
GEG
- PHL
1 stop9h 06m
Delta
Deal found 6/16![Delta logo]()
$299
This Orbitz deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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.
Tue 6/235:46 pm
PHL
- GEG
1 stop8h 13m
Multiple Airlines
Mon 6/2912:31 pm
GEG
- PHL
1 stop14h 07m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 6/296:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Thu 7/212:35 pm
GEG
- PHL
1 stop8h 23m
Delta
Deal found 6/15![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 6/246:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Thu 7/212:35 pm
GEG
- PHL
1 stop8h 23m
Delta
Deal found 6/15![Delta logo]()
$321
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:36 am
PHL
- GEG
1 stop8h 35m
American Airlines
Thu 6/2512:51 pm
GEG
- PHL
1 stop8h 45m
American Airlines
Deal found 6/13![American Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 6/12. 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 8/261:45 pm
PHL
- GEG
2 stops11h 20m
Southwest
Tue 9/11:55 pm
GEG
- PHL
1 stop6h 55m
Southwest
Deal found 6/12![Southwest logo]()
$326
This American Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:57 pm
PHL
- GEG
1 stop10h 45m
American Airlines
Sat 8/295:40 am
GEG
- PHL
1 stop10h 08m
American Airlines
Deal found 6/17![American Airlines logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/27:02 am
PHL
- SEA
Nonstop5h 51m
Alaska Airlines
Wed 9/99:27 pm
SEA
- PHL
Nonstop5h 13m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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.
Sun 7/197:35 pm
PHL
- SEA
Nonstop6h 21m
American Airlines
Tue 7/2810:35 pm
SEA
- PHL
Nonstop5h 13m
American Airlines
Deal found 6/15![American Airlines logo]()
$330
This Frontier deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 8/138:37 pm
PHL
- SEA
1 stop15h 27m
Frontier
Thu 8/207:41 pm
SEA
- PHL
1 stop13h 06m
Frontier
Deal found 6/17![Frontier logo]()
$331
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/1911:06 am
PHL
- SEA
1 stop26h 33m
Frontier
Wed 7/298:13 pm
SEA
- PHL
1 stop30h 47m
Frontier
Deal found 6/17![Frontier logo]()
$332
Best flights from Philadelphia to WashingtonDiscover carefully curated flight deals from Philadelphia to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 17, 2026.
Discover carefully curated flight deals from Philadelphia to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 17, 2026.
This Delta deal was found by Cheapflights users on 6/12. 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.
Sun 7/196:55 pm
PHL
- GEG
1 stop8h 00m
Delta
Tue 7/284:30 pm
GEG
- PHL
1 stop9h 59m
Delta
Deal found 6/12![Delta logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 8/287:02 am
PHL
- SEA
Nonstop5h 51m
Alaska Airlines
Mon 8/319:27 pm
SEA
- PHL
Nonstop5h 13m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:01 pm
PHL
- SEA
1 stop8h 42m
United Airlines
Fri 9/411:04 pm
SEA
- PHL
1 stop7h 39m
United Airlines
Deal found 6/13![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/13:00 pm
PHL
- SEA
2 stops11h 25m
Southwest
Sun 9/1311:00 pm
SEA
- PHL
1 stop11h 15m
Southwest
Deal found 6/16![Southwest logo]()
$360
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 7/34:17 pm
PHL
- PSC
1 stop10h 02m
American Airlines
Wed 7/293:24 pm
PSC
- PHL
1 stop11h 11m
American Airlines
Deal found 6/12![American Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/175:40 am
PHL
- GEG
1 stop8h 59m
Delta
Fri 7/247:00 am
GEG
- PHL
1 stop8h 04m
Delta
Deal found 6/15![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 6/296:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Thu 7/212:35 pm
GEG
- PHL
1 stop8h 23m
Delta
Deal found 6/15![Delta logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/297:02 am
PHL
- PDX
1 stop7h 41m
Alaska Airlines
Tue 9/17:30 am
PDX
- PHL
Nonstop5h 15m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:56 pm
PHL
- PDX
1 stop8h 22m
United Airlines
Tue 12/88:45 am
PDX
- PHL
2 stops9h 47m
United Airlines
Deal found 6/13![United Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/183:00 pm
PHL
- PDX
2 stops10h 15m
Southwest
Wed 8/2610:55 am
PDX
- PHL
1 stop7h 00m
Southwest
Deal found 6/16![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 6/14. 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.
Mon 9/77:05 am
PHL
- SEA
Nonstop5h 56m
Delta
Sun 9/139:50 pm
SEA
- PHL
Nonstop5h 15m
Delta
Deal found 6/14![Delta logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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.
Thu 8/134:26 pm
PHL
- SEA
Nonstop6h 04m
Alaska Airlines
Thu 8/206:51 pm
SEA
- PHL
1 stop17h 54m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/104:05 pm
PHL
- GEG
2 stops10h 10m
Southwest
Tue 9/151:55 pm
GEG
- PHL
1 stop6h 55m
Southwest
Deal found 6/16![Southwest logo]()
$379
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:25 am
PHL
- PDX
1 stop8h 03m
United Airlines
Thu 10/86:55 pm
PDX
- PHL
2 stops11h 48m
United Airlines
Deal found 6/14![United Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 8/137:00 pm
PHL
- SEA
1 stop7h 59m
Delta
Thu 8/209:30 pm
SEA
- PHL
Nonstop5h 20m
Delta
Deal found 6/15![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 8/156:30 am
PHL
- GEG
2 stops9h 30m
Southwest
Wed 8/191:55 pm
GEG
- PHL
1 stop6h 55m
Southwest
Deal found 6/15![Southwest logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/284:48 pm
PHL
- PDX
Nonstop5h 46m
Alaska Airlines
Sun 9/67:30 am
PDX
- PHL
Nonstop5h 15m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$397
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:01 pm
PHL
- PDX
1 stop8h 51m
United Airlines
Tue 9/19:00 am
PDX
- PHL
2 stops12h 59m
United Airlines
Deal found 6/14![United Airlines logo]()
$406
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:05 am
PHL
- PSC
1 stop10h 45m
American Airlines
Wed 7/223:24 pm
PSC
- PHL
1 stop11h 11m
American Airlines
Deal found 6/14![American Airlines logo]()
$492
This Delta deal was found by Cheapflights users on 6/12. 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.
Thu 8/277:00 pm
PHL
- SEA
1 stop7h 59m
Delta
Sun 9/69:30 pm
SEA
- PHL
Nonstop5h 20m
Delta
Deal found 6/12![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 6/12. 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 8/263:00 pm
PHL
- PDX
2 stops9h 55m
Southwest
Tue 9/16:45 am
PDX
- PHL
2 stops8h 15m
Southwest
Deal found 6/12![Southwest logo]()
$379
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/57:05 am
PHL
- SEA
Nonstop5h 56m
Delta
Sun 9/139:50 pm
SEA
- PHL
Nonstop5h 15m
Delta
Deal found 6/16![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 7/85:46 pm
PHL
- PDX
Nonstop5h 51m
Alaska Airlines
Tue 7/217:17 am
PDX
- PHL
Nonstop5h 06m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$417
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 10/3112:05 pm
PHL
- GEG
2 stops11h 55m
Southwest
Sat 11/75:00 am
GEG
- PHL
2 stops9h 10m
Southwest
Deal found 6/17![Southwest logo]()
$388
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:08 am
PHL
- PSC
2 stops10h 50m
American Airlines
Wed 7/293:24 pm
PSC
- PHL
1 stop11h 11m
American Airlines
Deal found 6/13![American Airlines logo]()
$530
This Delta deal was found by Cheapflights users on 6/13. 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.
Thu 8/207:00 pm
PHL
- SEA
1 stop7h 59m
Delta
Mon 8/247:50 pm
SEA
- PHL
1 stop7h 15m
Delta
Deal found 6/13![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 9/44:48 pm
PHL
- GEG
1 stop9h 23m
Alaska Airlines
Tue 9/85:12 am
GEG
- PHL
2 stops21h 28m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/2811:25 am
PHL
- PDX
2 stops10h 35m
Southwest
Tue 8/411:30 pm
PDX
- PHL
1 stop9h 05m
Southwest
Deal found 6/16![Southwest logo]()
$391
This Delta deal was found by Cheapflights users on 6/12. 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.
Mon 8/107:00 pm
PHL
- SEA
1 stop7h 59m
Delta
Tue 8/187:15 am
SEA
- PHL
1 stop7h 32m
Delta
Deal found 6/12![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 8/296:59 pm
PHL
- PUW
1 stop7h 53m
Alaska Airlines
Tue 9/15:20 pm
PUW
- PHL
1 stop9h 20m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$439
Last-minute flights from Philadelphia to WashingtonDiscover last-minute flight deals from Philadelphia to Washington. Data last updated June 17, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Washington. Data last updated June 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/12. 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 6/196:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Wed 6/2412:35 pm
GEG
- PHL
1 stop8h 23m
Delta
Deal found 6/12![Delta logo]()
$351
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:36 am
PHL
- GEG
1 stop8h 35m
American Airlines
Thu 6/2512:51 pm
GEG
- PHL
1 stop8h 45m
American Airlines
Deal found 6/13![American Airlines logo]()
$323
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:37 pm
PHL
- SEA
1 stop16h 11m
Frontier
Mon 6/298:12 pm
SEA
- PHL
1 stop31h 15m
Frontier
Deal found 6/12![Frontier logo]()
$354
This Orbitz deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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.
Tue 6/235:46 pm
PHL
- GEG
1 stop8h 13m
Multiple Airlines
Mon 6/2912:31 pm
GEG
- PHL
1 stop14h 07m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 6/246:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Thu 7/212:35 pm
GEG
- PHL
1 stop8h 23m
Delta
Deal found 6/15![Delta logo]()
$321
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:00 am
PHL
- SEA
1 stop26h 35m
Frontier
Thu 6/258:12 pm
SEA
- PHL
1 stop31h 15m
Frontier
Deal found 6/12![Frontier logo]()
$346
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 6/296:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Thu 7/212:35 pm
GEG
- PHL
1 stop8h 23m
Delta
Deal found 6/15![Delta logo]()
$319
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/94:17 pm
PHL
- GEG
1 stop9h 49m
American Airlines
Fri 7/172:29 pm
GEG
- PHL
1 stop7h 30m
American Airlines
Deal found 6/15![American Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/96:55 pm
PHL
- GEG
1 stop8h 00m
Delta
Mon 7/204:30 pm
GEG
- PHL
1 stop9h 59m
Delta
Deal found 6/16![Delta logo]()
$349
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/214:17 pm
PHL
- GEG
1 stop9h 49m
American Airlines
Tue 7/286:30 am
GEG
- PHL
1 stop11h 11m
American Airlines
Deal found 6/13![American Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/236:55 pm
PHL
- GEG
1 stop8h 00m
Delta
Tue 7/285:37 pm
GEG
- PHL
1 stop8h 52m
Delta
Deal found 6/16![Delta logo]()
$299
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:15 am
PHL
- GEG
1 stop9h 25m
Delta
Tue 8/45:40 pm
GEG
- PHL
1 stop9h 10m
Delta
Deal found 6/15![Delta logo]()
$339
One-way flights from Philadelphia to WashingtonSearch for one-way flight options from Philadelphia to Washington. Find affordable one-way fares based on user searches. Data last updated June 17, 2026.
Search for one-way flight options from Philadelphia to Washington. Find affordable one-way fares based on user searches. Data last updated June 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 10/218:44 pm
PHL
- PDX
1 stop22h 51m
Frontier
Deal found 6/16![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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.
Fri 8/1411:06 am
PHL
- PDX
1 stop8h 48m
Frontier
Deal found 6/17![Frontier logo]()
$130
This Priceline deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/311:06 am
PHL
- PDX
1 stop9h 18m
Frontier
Deal found 6/16![Frontier logo]()
$134
This Expedia deal was found by Cheapflights users on 6/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:44 pm
PHL
- PDX
1 stop22h 51m
Frontier
Deal found 6/14![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 9/158:44 pm
PHL
- PDX
1 stop20h 43m
Frontier
Deal found 6/12![Frontier logo]()
$139
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/26:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 6/17![Delta logo]()
$140
This CheapOair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 7/2012:54 pm
PHL
- PDX
1 stop30h 37m
Frontier
Deal found 6/16![Frontier logo]()
$141
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:05 am
PHL
- PDX
1 stop10h 44m
United Airlines
Deal found 6/14![United Airlines logo]()
$146
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” 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 9/1211:04 am
PHL
- PDX
2 stops9h 45m
United Airlines
Deal found 6/16![United Airlines logo]()
$151
This Delta deal was found by Cheapflights users on 6/12. 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.
Mon 6/296:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 6/12![Delta logo]()
$160
This United Airlines deal was found by Cheapflights users on 6/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:35 pm
PHL
- GEG
2 stops12h 01m
United Airlines
Deal found 6/14![United Airlines logo]()
$164
This American Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:35 pm
PHL
- SEA
Nonstop6h 21m
American Airlines
Deal found 6/16![American Airlines logo]()
$165
Find flight deals from Philadelphia to Washington
Keep the following information in mind while searching for Philadelphia to Washington flight deals. Data was last updated June 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $279 (Delta) |
One-way from | $129 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $468 |
Good round-trip deal | $354 or less |
Good one-way deal | $200 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia 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 June 17, 2026.
Use the filters below to find and compare flights from Philadelphia to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Sun 7/19
6:55 pm-11:55 pm
1 stop8h 00m
Spokane
Tue 7/28
4:30 pm-5:29 am
1 stop9h 59m
$299
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Fri 7/17
5:40 am-11:39 am
1 stop8h 59m
Spokane
Fri 7/24
7:00 am-6:04 pm
1 stop8h 04m
$299
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Mon 6/29
6:45 pm-11:55 pm
1 stop8h 10m
Spokane
Thu 7/2
12:35 pm-11:58 pm
1 stop8h 23m
$319
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Fri 8/28
7:02 am-9:53 am
Nonstop5h 51m
Seattle/Tacoma Intl
Mon 8/31
9:27 pm-5:40 am
Nonstop5h 13m
$329
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Mon 9/7
7:05 am-10:01 am
Nonstop5h 56m
Seattle/Tacoma Intl
Sun 9/13
9:50 pm-6:05 am
Nonstop5h 15m
$329
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Thu 8/13
7:00 pm-11:59 pm
1 stop7h 59m
Seattle/Tacoma Intl
Thu 8/20
9:30 pm-5:50 am
Nonstop5h 20m
$339
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Thu 8/27
7:00 pm-11:59 pm
1 stop7h 59m
Seattle/Tacoma Intl
Sun 9/6
9:30 pm-5:50 am
Nonstop5h 20m
$339
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Sat 9/5
7:05 am-10:01 am
Nonstop5h 56m
Seattle/Tacoma Intl
Sun 9/13
9:50 pm-6:05 am
Nonstop5h 15m
$339
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Thu 8/20
7:00 pm-11:59 pm
1 stop7h 59m
Seattle/Tacoma Intl
Mon 8/24
7:50 pm-6:05 am
1 stop7h 15m
$349
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Mon 8/10
7:00 pm-11:59 pm
1 stop7h 59m
Seattle/Tacoma Intl
Tue 8/18
7:15 am-5:47 pm
1 stop7h 32m
$349
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Philadelphia to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Philadelphia with our price prediction graph.
PHL-GEG
PHL-SEA
PHL-PSC
PHL-PDX
PHL-PUW
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 Philadelphia to Washington
PHL-USWA
PHL-GEG
PHL-SEA
PHL-PSC
PHL-PDX
What is the cheapest month to book a flight from Philadelphia to State of Washington?
Currently, January is the cheapest month in which you can book a flight from Philadelphia to State of Washington (average of $139). Flying from Philadelphia to State of Washington in May is currently the most expensive (average of $848). 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 PHL to WA?
Find hourly flight availability from Philadelphia 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 June 17, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to State of Washington as you normally would.
Weekly flight availability from Philadelphia to State of Washington
Explore weekly flight availability from Philadelphia 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 June 17, 2026.
The most flights from PHL to USWA are scheduled on a Tuesday (8 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Philadelphia to State of Washington?
How far ahead should I book a flight from Philadelphia to State of Washington?
The best time to book flights from Philadelphia to State of Washington is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 June 17, 2026.
Read through reviews of airlines operating flights from Philadelphia to Washington, such as Alaska Airlines,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.1
Overall
7.9
Entertainment
7.0
Crew
8.5
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Related info for your journey
Find useful and relevant information for your journey from Philadelphia 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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Complete your trip
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Search flights from Philadelphia to Washington by cabin class
Find flights from Philadelphia to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Philadelphia and Washington flights
Browse other Philadelphia and Washington flight options. Last updated on June 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Philadelphia to Washington flights
Consider these flights traveling from Philadelphia to Washington.
Top 7 airlines flying from Philadelphia to Washington
Discover the top 7 airlines that operate flights from Philadelphia 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 June 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$134 | Average$298 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$163 | Average$411 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$198 | Average$453 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$204 | Average$441 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$238 | Average$498 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$260 | Average$457 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$268 | Average$426 | FlexibilityNo cancel fee | On-time71% |