$113+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Sep 17 — Sep 241
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 August 18, 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 August 18, 2026.
This Delta deal was found by Cheapflights users on 8/13. 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 9/197:05 am -
1 stop8h 15m
Tue 9/225:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$225
This Delta deal was found by Cheapflights users on 8/13. 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.
Fri 9/187:05 am -
1 stop11h 09m
Tue 9/225:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$254
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/65:00 am -
1 stop9h 54m
Fri 9/1112:39 pm -
1 stop8h 43m
Deal found 8/13![American Airlines logo]()
$286
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/68:00 am -
1 stop7h 35m
Fri 9/115:00 am -
2 stops11h 31m
Deal found 8/13![United Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 8/13. 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.
Wed 9/307:05 am -
1 stop8h 15m
Sun 10/45:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 8/13. 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.
Fri 9/47:05 am -
1 stop11h 14m
Thu 9/105:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$312
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:05 pm -
1 stop9h 00m
Tue 9/227:30 am -
2 stops10h 10m
Deal found 8/13![Southwest logo]()
$324
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am -
1 stop29h 39m
Mon 8/319:29 pm -
1 stop30h 01m
Deal found 8/14![Frontier logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Thu 10/88:44 pm -
1 stop16h 04m
Fri 10/164:27 pm -
1 stop29h 49m
Deal found 8/16![Frontier logo]()
$330
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:05 pm -
1 stop9h 00m
Thu 9/1010:55 am -
1 stop9h 55m
Deal found 8/13![Southwest logo]()
$331
This Booking.com deal was found by Cheapflights users on 8/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:37 pm -
1 stop15h 42m
Wed 8/268:53 pm -
1 stop30h 37m
Deal found 8/15![Frontier logo]()
$331
This Super.com deal was found by Cheapflights users on 8/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:37 pm -
1 stop15h 42m
Tue 8/258:53 pm -
1 stop30h 37m
Deal found 8/16![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 August 18, 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 August 18, 2026.
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:01 pm -
1 stop8h 51m
Mon 9/2111:02 pm -
1 stop8h 00m
Deal found 8/17![United Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:40 pm -
1 stop7h 45m
Sat 11/2111:30 pm -
1 stop8h 30m
Deal found 8/13![Southwest logo]()
$368
This Delta deal was found by Cheapflights users on 8/14. 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.
Sun 9/137:05 am -
Nonstop5h 51m
Sat 9/196:00 am -
1 stop9h 08m
Deal found 8/14![Delta logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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.
Tue 9/154:48 pm -
Nonstop5h 46m
Sat 9/197:30 am -
Nonstop5h 15m
Deal found 8/14![Alaska Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:16 pm -
2 stops10h 55m
Wed 12/25:00 am -
2 stops9h 22m
Deal found 8/17![United Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 8/14. 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.
Fri 9/256:52 pm -
1 stop8h 07m
Thu 10/111:59 pm -
1 stop7h 48m
Deal found 8/14![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 8/16. 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 10/284:17 pm -
Nonstop5h 48m
Wed 11/45:43 pm -
1 stop8h 49m
Deal found 8/16![Alaska Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 8/17. 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.
Mon 9/142:05 pm -
2 stops10h 10m
Mon 9/2111:30 pm -
1 stop9h 05m
Deal found 8/17![Southwest logo]()
$388
This United Airlines deal was found by Cheapflights users on 8/16. 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 11/146:00 am -
1 stop9h 20m
Mon 11/237:00 am -
1 stop7h 42m
Deal found 8/16![United Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 8/17. 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.
Fri 11/67:00 am -
Nonstop5h 58m
Sun 11/89:30 pm -
Nonstop5h 14m
Deal found 8/17![Delta logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 8/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:48 pm -
Nonstop5h 46m
Sun 10/47:00 am -
Nonstop5h 14m
Deal found 8/15![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:50 pm -
1 stop7h 40m
Sat 9/1911:05 pm -
1 stop9h 05m
Deal found 8/13![Southwest logo]()
$397
This Alaska Airlines deal was found by Cheapflights users on 8/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am -
1 stop10h 30m
Fri 10/27:30 am -
Nonstop5h 15m
Deal found 8/15![Alaska Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 8/15. 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.
Sun 8/306:55 pm -
1 stop7h 14m
Wed 9/25:30 am -
1 stop9h 17m
Deal found 8/15![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:25 am -
1 stop8h 07m
Sat 9/197:00 am -
1 stop7h 54m
Deal found 8/17![United Airlines logo]()
$412
This Southwest deal was found by Cheapflights users on 8/14. 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.
Fri 9/184:05 pm -
1 stop9h 55m
Sun 9/205:50 am -
2 stops11h 20m
Deal found 8/14![Southwest logo]()
$414
This Delta deal was found by Cheapflights users on 8/13. 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.
Tue 10/207:00 am -
1 stop7h 52m
Wed 10/286:00 am -
1 stop8h 39m
Deal found 8/13![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 8/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:02 am -
1 stop9h 10m
Sat 11/75:34 pm -
1 stop8h 58m
Deal found 8/15![Alaska Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Fri 10/96:30 pm -
1 stop9h 04m
Tue 10/1311:30 pm -
1 stop7h 41m
Deal found 8/16![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 8/14. 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.
Fri 9/42:10 pm -
2 stops10h 55m
Thu 9/101:50 pm -
1 stop7h 00m
Deal found 8/14![Southwest logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 10/287:02 am -
1 stop9h 16m
Sat 10/316:00 pm -
1 stop9h 37m
Deal found 8/13![Alaska Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/14. 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 2/16:40 pm -
1 stop8h 05m
Fri 2/55:00 pm -
1 stop9h 41m
Deal found 8/14![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 8/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:40 am -
2 stops13h 00m
Wed 10/285:10 am -
1 stop7h 36m
Deal found 8/15![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 8/17. 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 8/224:50 pm -
1 stop7h 40m
Sat 8/295:00 am -
2 stops12h 45m
Deal found 8/17![Southwest logo]()
$420
This Delta deal was found by Cheapflights users on 8/15. 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.
Tue 9/2911:39 am -
1 stop8h 52m
Thu 10/17:15 pm -
1 stop7h 50m
Deal found 8/15![Delta logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:48 pm -
Nonstop5h 46m
Wed 9/235:41 pm -
1 stop8h 59m
Deal found 8/17![Alaska Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 8/17. 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.
Thu 10/85:10 pm -
2 stops10h 45m
Sat 10/1012:10 am -
1 stop7h 50m
Deal found 8/17![Southwest logo]()
$438
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 8/306:16 am -
2 stops11h 50m
Wed 9/21:37 pm -
1 stop7h 07m
Deal found 8/13![United Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 8/14. 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.
Wed 9/27:05 am -
Nonstop5h 56m
Fri 9/119:30 pm -
Nonstop5h 20m
Deal found 8/14![Delta logo]()
$432
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:08 pm -
1 stop8h 15m
Sat 10/107:29 pm -
2 stops11h 42m
Deal found 8/17![United Airlines logo]()
$452
Last-minute flights from Philadelphia to WashingtonDiscover last-minute flight deals from Philadelphia to Washington. Data last updated August 18, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Washington. Data last updated August 18, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 8/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:37 pm -
1 stop15h 42m
Sun 8/302:37 pm -
1 stop12h 02m
Deal found 8/13![Frontier logo]()
$330
This iWofly deal was found by Cheapflights users on 8/15. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:37 pm -
1 stop15h 42m
Thu 8/277:06 pm -
1 stop7h 33m
Deal found 8/15![Frontier logo]()
$335
This Booking.com deal was found by Cheapflights users on 8/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:37 pm -
1 stop15h 42m
Wed 8/268:53 pm -
1 stop30h 37m
Deal found 8/15![Frontier logo]()
$331
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am -
1 stop29h 39m
Mon 8/319:29 pm -
1 stop30h 01m
Deal found 8/14![Frontier logo]()
$329
This Delta deal was found by Cheapflights users on 8/13. 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.
Fri 9/47:05 am -
1 stop11h 14m
Thu 9/105:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$312
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:05 pm -
1 stop9h 00m
Thu 9/1010:55 am -
1 stop9h 55m
Deal found 8/13![Southwest logo]()
$331
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/65:00 am -
1 stop9h 54m
Fri 9/1112:39 pm -
1 stop8h 43m
Deal found 8/13![American Airlines logo]()
$286
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/68:00 am -
1 stop7h 35m
Fri 9/115:00 am -
2 stops11h 31m
Deal found 8/13![United Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 8/13. 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.
Fri 9/187:05 am -
1 stop11h 09m
Tue 9/225:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$254
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:05 pm -
1 stop9h 00m
Tue 9/227:30 am -
2 stops10h 10m
Deal found 8/13![Southwest logo]()
$324
This Delta deal was found by Cheapflights users on 8/13. 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 9/197:05 am -
1 stop8h 15m
Tue 9/225:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$225
This Delta deal was found by Cheapflights users on 8/13. 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.
Wed 9/307:05 am -
1 stop8h 15m
Sun 10/45:49 pm -
1 stop9h 01m
Deal found 8/13![Delta logo]()
$297
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 August 18, 2026.
Search for one-way flight options from Philadelphia to Washington. Find affordable one-way fares based on user searches. Data last updated August 18, 2026.
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am -
1 stop7h 15m
Deal found 8/13![Southwest logo]()
$113
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Tue 10/271:20 pm -
2 stops10h 51m
Deal found 8/13![United Airlines logo]()
$138
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:05 pm -
1 stop9h 00m
Deal found 8/13![Southwest logo]()
$142
This Southwest deal was found by Cheapflights users on 8/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:10 am -
1 stop6h 50m
Deal found 8/13![Southwest logo]()
$145
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 9/66:16 am -
2 stops11h 50m
Deal found 8/13![United Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Thu 9/105:32 pm -
2 stops19h 10m
Deal found 8/14![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 8/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:00 am -
1 stop29h 39m
Deal found 8/16![Frontier logo]()
$168
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/188:44 pm -
1 stop16h 04m
Deal found 8/16![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Thu 9/176:10 pm -
2 stops47h 58m
Deal found 8/14![Multiple Airlines logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:32 pm -
2 stops19h 10m
Deal found 8/15![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Wed 9/165:32 pm -
2 stops19h 10m
Deal found 8/14![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:32 pm -
2 stops24h 36m
Deal found 8/17![Frontier logo]()
$174
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 August 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $225 (American Airlines) |
One-way from | $113 (Southwest) |
Popular in | June |
Cheapest in | January |
Average price | $460 |
Good round-trip deal | $393 or less |
Good one-way deal | $232 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 August 18, 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
PhiladelphiaPortland
PHL Philadelphia - PDX Portland
PHLPDX
Philadelphia
Mon 9/14
5:01 pm-10:52 pm
1 stop8h 51m
Portland
Mon 9/21
11:02 pm-10:02 am
1 stop8h 00m
$351
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sat 11/21
1:16 pm-9:11 pm
2 stops10h 55m
Spokane
Wed 12/2
5:00 am-5:22 pm
2 stops9h 22m
$363
PhiladelphiaPortland
PHL Philadelphia - PDX Portland
PHLPDX
Philadelphia
Sat 11/14
4:40 pm-9:25 pm
1 stop7h 45m
Portland
Sat 11/21
11:30 pm-11:00 am
1 stop8h 30m
$368
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Sun 9/13
7:05 am-9:56 am
Nonstop5h 51m
Seattle/Tacoma Intl
Sat 9/19
6:00 am-6:08 pm
1 stop9h 08m
$369
PhiladelphiaPortland
PHL Philadelphia - PDX Portland
PHLPDX
Philadelphia
Tue 9/15
4:48 pm-7:34 pm
Nonstop5h 46m
Portland
Sat 9/19
7:30 am-3:45 pm
Nonstop5h 15m
$377
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Sat 11/14
6:00 am-12:20 pm
1 stop9h 20m
Seattle/Tacoma Intl
Mon 11/23
7:00 am-5:42 pm
1 stop7h 42m
$377
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Fri 9/25
6:52 pm-11:59 pm
1 stop8h 07m
Seattle/Tacoma Intl
Thu 10/1
11:59 pm-10:47 am
1 stop7h 48m
$379
PhiladelphiaPortland
PHL Philadelphia - PDX Portland
PHLPDX
Philadelphia
Wed 10/28
4:17 pm-7:05 pm
Nonstop5h 48m
Portland
Wed 11/4
5:43 pm-5:32 am
1 stop8h 49m
$387
PhiladelphiaPortland
PHL Philadelphia - PDX Portland
PHLPDX
Philadelphia
Mon 9/14
2:05 pm-9:15 pm
2 stops10h 10m
Portland
Mon 9/21
11:30 pm-11:35 am
1 stop9h 05m
$388
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Fri 11/6
7:00 am-9:58 am
Nonstop5h 58m
Seattle/Tacoma Intl
Sun 11/8
9:30 pm-5:44 am
Nonstop5h 14m
$393
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-PDX
PHL-SEA
PHL-GEG
PHL-PSC
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-PDX
PHL-SEA
PHL-GEG
PHL-PSC
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 $336). Flying from Philadelphia to State of Washington in December is currently the most expensive (average of $473). 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 August 18, 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 August 18, 2026.
The most flights from PHL to USWA are scheduled on a Sunday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Philadelphia to State of Washington?
Airfare is below average for this route at the moment.
Philadelphia to State of Washington flights typically cost between $373 and $567 in August.The cheapest round-trip price found within the last 5 days was $329 on Frontier (Aug 30-Sep 1).
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 August 18, 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.
Boarding
8.1
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Boarding
8.1
Food
7.0
Entertainment
7.0
Overall
7.9
Crew
8.5
Comfort
7.8
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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Alternative routes for Philadelphia to Washington
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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 August 18, 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 August 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$134 | Average$276 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$138 | Average$278 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$163 | Average$455 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$238 | Average$511 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$248 | Average$438 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$271 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$275 | Average$431 | FlexibilityNo cancel fee | On-time71% |