$145+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Sep 3 — Sep 101
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 4, 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 4, 2026.
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/87:05 am -
1 stop8h 15m
Fri 9/115:24 am -
1 stop9h 18m
Deal found 8/4![Delta logo]()
$307
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.
Sat 9/54:50 pm -
1 stop7h 10m
Sat 9/128:00 am -
2 stops9h 50m
Deal found 7/31![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/127:05 am -
1 stop11h 09m
Tue 9/227:30 pm -
1 stop7h 20m
Deal found 8/4![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/42:31 pm -
1 stop9h 59m
Fri 9/115:49 pm -
1 stop9h 01m
Deal found 8/4![Delta logo]()
$327
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.
Fri 9/117:05 am -
1 stop11h 09m
Sun 9/205:49 pm -
1 stop9h 01m
Deal found 8/2![Delta logo]()
$329
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 9/612:25 pm -
1 stop10h 00m
Thu 9/105:15 am -
1 stop9h 40m
Deal found 7/31![Southwest logo]()
$329
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.
Mon 8/241:30 pm -
2 stops12h 06m
Thu 8/271:37 pm -
1 stop7h 07m
Deal found 8/1![United Airlines logo]()
$330
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 9/37:00 am -
1 stop11h 28m
Wed 9/910:59 pm -
1 stop13h 46m
Deal found 8/3![Multiple Airlines logo]()
$330
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.
Wed 8/1211:06 am -
1 stop26h 58m
Tue 8/187:06 pm -
1 stop7h 33m
Deal found 7/31![Frontier logo]()
$331
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 8/138:37 pm -
1 stop15h 27m
Mon 8/249:29 pm -
1 stop30h 01m
Deal found 8/3![Frontier logo]()
$332
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 10/108:44 pm -
1 stop16h 07m
Mon 10/199:29 pm -
Nonstop5h 12m
Deal found 7/30![Multiple Airlines logo]()
$333
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 8/2710:01 pm -
2 stops17h 19m
Wed 9/27:06 pm -
1 stop7h 33m
Deal found 8/1![Frontier logo]()
$334
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 4, 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 4, 2026.
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.
Thu 9/104:05 pm -
1 stop9h 00m
Fri 9/116:00 am -
1 stop8h 55m
Deal found 8/3![Southwest logo]()
$307
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/167:05 am -
1 stop8h 15m
Tue 9/295:49 pm -
1 stop9h 01m
Deal found 8/4![Delta logo]()
$325
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 9/111:30 pm -
1 stop8h 44m
Tue 9/157:00 am -
1 stop7h 54m
Deal found 8/1![United Airlines logo]()
$329
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.
Sun 10/47:02 am -
Nonstop5h 53m
Sat 10/109:29 pm -
Nonstop5h 12m
Deal found 8/3![Alaska Airlines logo]()
$359
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/177:25 am -
1 stop8h 56m
Mon 12/212:15 pm -
1 stop6h 56m
Deal found 7/30![American Airlines logo]()
$362
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.
Wed 9/28:00 am -
1 stop32h 41m
Fri 9/112:01 pm -
2 stops25h 13m
Deal found 8/2![Multiple Airlines logo]()
$506
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 9/225:20 am -
1 stop9h 08m
Tue 9/227:30 pm -
1 stop7h 20m
Deal found 8/3![Delta logo]()
$325
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 12/175:00 am -
1 stop8h 15m
Mon 12/216:30 pm -
2 stops13h 00m
Deal found 7/30![Southwest logo]()
$342
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.
Mon 10/55:08 pm -
1 stop8h 48m
Mon 10/1211:13 pm -
1 stop7h 58m
Deal found 8/3![United Airlines logo]()
$347
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.
Tue 9/16:59 pm -
Nonstop5h 52m
Tue 9/89:27 pm -
Nonstop5h 13m
Deal found 7/30![Alaska Airlines logo]()
$359
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 9/226:30 am -
1 stop7h 58m
Sun 9/2710:50 pm -
1 stop7h 37m
Deal found 8/3![Delta logo]()
$347
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.
Wed 9/2312:35 pm -
2 stops11h 40m
Sun 10/45:30 am -
1 stop8h 00m
Deal found 7/30![Southwest logo]()
$350
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 9/34:48 pm -
1 stop9h 23m
Tue 9/87:40 am -
1 stop19h 00m
Deal found 8/2![Alaska Airlines logo]()
$374
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.
Thu 9/246:34 pm -
1 stop9h 00m
Mon 9/288:30 am -
1 stop7h 54m
Deal found 8/1![United Airlines logo]()
$382
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 8/244:05 pm -
2 stops10h 10m
Wed 8/266:15 am -
2 stops11h 20m
Deal found 7/31![Southwest logo]()
$351
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:00 pm -
1 stop7h 53m
Mon 8/315:40 pm -
1 stop9h 10m
Deal found 7/31![Delta logo]()
$367
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 10/55:10 pm -
2 stops10h 45m
Tue 10/612:10 am -
1 stop7h 30m
Deal found 7/31![Southwest logo]()
$352
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 10/154:17 pm -
Nonstop5h 48m
Sun 10/187:00 am -
Nonstop5h 14m
Deal found 7/30![Alaska Airlines logo]()
$397
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 8/257:20 am -
1 stop8h 04m
Sun 8/307:15 pm -
1 stop7h 50m
Deal found 8/2![Delta logo]()
$367
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 9/172:05 pm -
1 stop7h 15m
Thu 9/245:15 am -
1 stop7h 45m
Deal found 7/30![Southwest logo]()
$363
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.
Thu 10/86:49 pm -
1 stop8h 10m
Tue 10/139:29 pm -
Nonstop5h 08m
Deal found 7/30![Delta logo]()
$369
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 11/35:49 pm -
1 stop8h 59m
Sat 11/75:29 pm -
1 stop9h 04m
Deal found 8/1![Alaska Airlines logo]()
$409
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.
Mon 8/243:05 pm -
2 stops10h 47m
Sat 8/299:00 am -
2 stops12h 59m
Deal found 7/31![United Airlines logo]()
$468
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 8/272:05 pm -
1 stop11h 35m
Thu 9/36:55 am -
2 stops11h 10m
Deal found 7/30![Southwest logo]()
$366
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:00 am -
Nonstop5h 58m
Fri 10/306:00 am -
1 stop9h 21m
Deal found 7/31![Delta logo]()
$369
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.
Tue 9/16:59 pm -
1 stop7h 50m
Sat 9/55:29 pm -
1 stop9h 11m
Deal found 7/30![Alaska Airlines logo]()
$409
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:05 am -
1 stop7h 26m
Wed 9/99:30 pm -
Nonstop5h 20m
Deal found 8/1![Delta logo]()
$369
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.
Sat 8/296:30 am -
2 stops10h 55m
Sat 9/55:00 am -
2 stops12h 50m
Deal found 7/30![Southwest logo]()
$373
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:00 am -
1 stop12h 59m
Sat 9/265:36 pm -
1 stop9h 04m
Deal found 7/30![Alaska Airlines logo]()
$449
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 10/1512:20 pm -
2 stops15h 15m
Wed 10/216:15 am -
2 stops8h 40m
Deal found 7/30![Southwest logo]()
$379
Last-minute flights from Philadelphia to WashingtonDiscover last-minute flight deals from Philadelphia to Washington. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Washington. Data last updated August 4, 2026 and is based on user searches.
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/98:37 pm -
1 stop15h 27m
Tue 8/187:06 pm -
1 stop7h 33m
Deal found 8/1![Frontier logo]()
$334
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:37 pm -
1 stop15h 27m
Tue 8/188:53 pm -
1 stop30h 37m
Deal found 7/31![Frontier logo]()
$329
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.
Wed 8/1211:06 am -
1 stop26h 58m
Tue 8/187:06 pm -
1 stop7h 33m
Deal found 7/31![Frontier logo]()
$331
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:06 am -
1 stop26h 58m
Tue 8/188:53 pm -
1 stop30h 37m
Deal found 7/31![Frontier logo]()
$330
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 8/138:37 pm -
1 stop15h 27m
Mon 8/249:29 pm -
1 stop30h 01m
Deal found 8/3![Frontier logo]()
$332
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.
Mon 8/241:30 pm -
2 stops12h 06m
Thu 8/271:37 pm -
1 stop7h 07m
Deal found 8/1![United Airlines logo]()
$330
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:57 pm -
1 stop10h 45m
Thu 9/312:44 pm -
1 stop8h 35m
Deal found 7/30![American Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/42:31 pm -
1 stop9h 59m
Fri 9/115:49 pm -
1 stop9h 01m
Deal found 8/4![Delta logo]()
$327
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.
Sat 9/54:50 pm -
1 stop7h 10m
Sat 9/128:00 am -
2 stops9h 50m
Deal found 7/31![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/87:05 am -
1 stop8h 15m
Fri 9/115:24 am -
1 stop9h 18m
Deal found 8/4![Delta logo]()
$307
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.
Fri 9/117:05 am -
1 stop11h 09m
Sun 9/205:49 pm -
1 stop9h 01m
Deal found 8/2![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/127:05 am -
1 stop11h 09m
Tue 9/227:30 pm -
1 stop7h 20m
Deal found 8/4![Delta logo]()
$325
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 4, 2026.
Search for one-way flight options from Philadelphia to Washington. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
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.
Sun 9/66:10 am -
1 stop6h 50m
Deal found 8/3![Southwest logo]()
$145
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.
Sun 9/66:16 am -
2 stops11h 50m
Deal found 8/3![United Airlines logo]()
$150
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/86:59 pm -
1 stop6h 55m
Deal found 8/4![Delta logo]()
$163
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.
Mon 9/2812:40 pm -
2 stops29h 28m
Deal found 7/31![Frontier logo]()
$165
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:44 pm -
1 stop16h 07m
Deal found 8/3![Frontier logo]()
$166
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/48:37 pm -
1 stop15h 42m
Deal found 7/31![Frontier logo]()
$167
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 9/126:30 am -
2 stops9h 30m
Deal found 8/3![Southwest logo]()
$168
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 10/26:00 am -
2 stops36h 08m
Deal found 7/31![Frontier logo]()
$168
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 8/254:45 pm -
2 stops43h 34m
Deal found 8/1![Frontier logo]()
$170
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:12 pm -
1 stop8h 09m
Deal found 8/3![American Airlines logo]()
$171
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.
Sat 8/224:45 pm -
2 stops19h 34m
Deal found 8/1![Frontier logo]()
$172
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 10/39:34 am -
1 stop9h 31m
Deal found 8/4![United Airlines 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 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $307 (Delta) |
One-way from | $145 (Southwest) |
Popular in | June |
Cheapest in | January |
Average price | $447 |
Good round-trip deal | $372 or less |
Good one-way deal | $222 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 4, 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
Thu 9/10
4:05 pm-10:05 pm
1 stop9h 00m
Spokane
Fri 9/11
6:00 am-5:55 pm
1 stop8h 55m
$307
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Wed 9/16
7:05 am-12:20 pm
1 stop8h 15m
Spokane
Tue 9/29
5:49 pm-5:50 am
1 stop9h 01m
$325
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Tue 9/22
5:20 am-11:28 am
1 stop9h 08m
Spokane
Tue 9/22
7:30 pm-5:50 am
1 stop7h 20m
$325
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Fri 9/11
1:30 pm-7:14 pm
1 stop8h 44m
Seattle/Tacoma Intl
Tue 9/15
7:00 am-5:54 pm
1 stop7h 54m
$329
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Thu 12/17
5:00 am-10:15 am
1 stop8h 15m
Spokane
Mon 12/21
6:30 pm-10:30 am
2 stops13h 00m
$342
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Mon 10/5
5:08 pm-10:56 pm
1 stop8h 48m
Seattle/Tacoma Intl
Mon 10/12
11:13 pm-10:11 am
1 stop7h 58m
$347
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Tue 9/22
6:30 am-11:28 am
1 stop7h 58m
Spokane
Sun 9/27
10:50 pm-9:27 am
1 stop7h 37m
$347
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Wed 9/23
12:35 pm-9:15 pm
2 stops11h 40m
Seattle/Tacoma Intl
Sun 10/4
5:30 am-4:30 pm
1 stop8h 00m
$350
PhiladelphiaSpokane
PHL - GEG
PHLGEG
Philadelphia
Mon 8/24
4:05 pm-11:15 pm
2 stops10h 10m
Spokane
Wed 8/26
6:15 am-8:35 pm
2 stops11h 20m
$351
PhiladelphiaSeattle
PHL - SEA
PHLSEA
Philadelphia
Mon 10/5
5:10 pm-12:55 am
2 stops10h 45m
Seattle/Tacoma Intl
Tue 10/6
12:10 am-10:40 am
1 stop7h 30m
$352
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-PDX
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-GEG
PHL-SEA
PHL-PDX
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 $477). 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 4, 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 4, 2026.
The most flights from PHL to USWA are scheduled on a Monday (8 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 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 $358 and $556 in September.The cheapest round-trip price found within the last 5 days was $329 on United Airlines (Sep 6-Sep 10).
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 4, 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.
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Related info for your journey
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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 4, 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 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$134 | Average$286 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$138 | Average$357 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$163 | Average$452 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$232 | Average$435 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$239 | Average$504 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$260 | Average$461 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$273 | Average$429 | FlexibilityNo cancel fee | On-time71% |