$190+ Cheap flights from Philadelphia (PHL) to Washington
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Nov 2 — Nov 91
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to Washington with Cheapflights
1. Tell us where you want to go
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 October 3, 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 October 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:02 am -
1 stop10h 20m
Wed 11/114:39 pm -
1 stop9h 53m
Deal found 9/29![Alaska Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Thu 11/59:45 am -
2 stops14h 12m
Mon 11/91:49 pm -
1 stop6h 50m
Deal found 10/3![United Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 10/3. 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.
Fri 11/65:45 am -
1 stop9h 30m
Mon 11/97:37 pm -
1 stop7h 06m
Deal found 10/3![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 9/30. 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.
Sun 11/227:00 am -
1 stop8h 15m
Thu 11/266:00 am -
1 stop8h 38m
Deal found 9/30![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 10/3. 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.
Fri 11/61:50 pm -
2 stops11h 35m
Mon 11/92:50 pm -
1 stop6h 20m
Deal found 10/3![Southwest logo]()
$358
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
1 stop12h 22m
Mon 10/199:16 pm -
1 stop31h 02m
Deal found 9/30![Frontier logo]()
$359
This Delta deal was found by Cheapflights users on 9/30. 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 11/267:15 am -
1 stop7h 34m
Mon 11/305:04 pm -
1 stop9h 51m
Deal found 9/30![Delta logo]()
$361
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 10/276:46 pm -
1 stop8h 13m
Tue 11/35:05 am -
2 stops9h 42m
Deal found 9/28![United Airlines logo]()
$362
This Mytrip deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:00 pm -
2 stops20h 59m
Wed 10/288:09 pm -
2 stops19h 10m
Deal found 9/29![Frontier logo]()
$363
This Expedia deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:50 am -
1 stop12h 22m
Fri 10/308:59 pm -
1 stop15h 15m
Deal found 9/29![Multiple Airlines logo]()
$364
This Cheapflightsfares deal was found by Cheapflights users on 10/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:44 pm -
1 stop15h 14m
Fri 10/169:16 pm -
1 stop31h 02m
Deal found 10/1![Frontier logo]()
$365
This Mytrip deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:22 pm -
2 stops20h 37m
Tue 10/278:09 pm -
2 stops19h 10m
Deal found 9/29![Frontier logo]()
$366
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 October 3, 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 October 3, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/3. 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.
Tue 11/107:02 am -
1 stop10h 20m
Wed 11/114:39 pm -
1 stop9h 53m
Deal found 10/3![Alaska Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/36:35 am -
1 stop8h 03m
Mon 2/812:40 pm -
1 stop7h 16m
Deal found 10/3![Delta logo]()
$341
This Southwest deal was found by Cheapflights users on 9/30. 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 1/74:40 pm -
1 stop8h 25m
Wed 1/137:00 am -
2 stops10h 30m
Deal found 9/30![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:35 pm -
1 stop8h 36m
Tue 12/17:00 am -
1 stop7h 57m
Deal found 9/30![United Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:44 pm -
1 stop19h 56m
Sun 10/184:58 pm -
2 stops29h 18m
Deal found 9/29![Multiple Airlines logo]()
$652
This Southwest deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:10 pm -
2 stops10h 50m
Mon 10/269:15 pm -
2 stops10h 25m
Deal found 9/29![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 9/30. 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.
Sat 10/175:45 am -
1 stop9h 30m
Sat 10/244:30 pm -
1 stop10h 13m
Deal found 9/30![Delta logo]()
$385
This Alaska Airlines deal was found by Cheapflights users on 9/30. 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 11/267:00 am -
Nonstop6h 07m
Mon 11/309:34 pm -
Nonstop5h 06m
Deal found 9/30![Alaska Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:35 pm -
2 stops10h 30m
Thu 11/51:55 pm -
1 stop7h 15m
Deal found 10/1![Southwest logo]()
$377
This United Airlines deal was found by Cheapflights users on 10/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:59 pm -
1 stop9h 08m
Sat 11/710:40 am -
1 stop9h 09m
Deal found 10/2![United Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:20 am -
1 stop7h 59m
Sun 10/255:38 pm -
1 stop9h 06m
Deal found 9/29![Delta logo]()
$397
This Delta deal was found by Cheapflights users on 10/2. 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.
Mon 11/97:00 am -
Nonstop6h 05m
Sat 11/149:38 pm -
Nonstop5h 05m
Deal found 10/2![Delta logo]()
$397
This Alaska Airlines deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/247:01 am -
Nonstop6h 27m
Sat 1/29:32 pm -
Nonstop5h 09m
Deal found 10/3![Alaska Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:24 pm -
2 stops10h 25m
Sat 10/245:00 am -
2 stops11h 24m
Deal found 9/30![United Airlines logo]()
$457
This Southwest deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/175:00 am -
1 stop8h 40m
Mon 1/185:30 am -
1 stop9h 10m
Deal found 10/2![Southwest logo]()
$419
This Delta deal was found by Cheapflights users on 10/2. 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 11/137:00 am -
Nonstop6h 05m
Fri 11/209:38 pm -
Nonstop5h 05m
Deal found 10/2![Delta logo]()
$418
This Expedia deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:17 pm -
1 stop22h 45m
Mon 10/2612:42 pm -
1 stop23h 32m
Deal found 10/1![Alaska Airlines logo]()
$467
This Southwest deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:20 am -
1 stop7h 45m
Sat 10/316:45 am -
2 stops9h 20m
Deal found 10/2![Southwest logo]()
$425
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Tue 11/1010:00 am -
1 stop8h 25m
Wed 11/115:00 am -
2 stops13h 38m
Deal found 10/3![United Airlines logo]()
$476
This Expedia deal was found by Cheapflights users on 9/30. 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.
Wed 10/214:17 pm -
1 stop22h 45m
Sun 10/2512:42 pm -
1 stop23h 32m
Deal found 9/30![Alaska Airlines logo]()
$467
This Southwest deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2512:10 pm -
2 stops10h 50m
Mon 11/308:30 pm -
2 stops11h 35m
Deal found 10/1![Southwest logo]()
$433
This Delta deal was found by Cheapflights users on 10/3. 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 10/137:20 am -
1 stop7h 59m
Wed 10/217:00 am -
1 stop8h 21m
Deal found 10/3![Delta logo]()
$447
This United Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:54 am -
1 stop11h 09m
Tue 11/109:05 am -
2 stops11h 04m
Deal found 9/29![United Airlines logo]()
$492
This Expedia deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:02 am -
1 stop9h 22m
Mon 11/92:04 pm -
1 stop12h 28m
Deal found 9/29![Alaska Airlines logo]()
$478
This Delta deal was found by Cheapflights users on 10/2. 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.
Wed 10/217:20 am -
2 stops10h 30m
Sun 10/253:30 pm -
2 stops11h 35m
Deal found 10/2![Delta logo]()
$464
This Priceline deal was found by Cheapflights users on 9/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/144:17 pm -
1 stop9h 37m
Sun 10/186:00 pm -
1 stop8h 41m
Deal found 9/30![Alaska Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Tue 12/159:45 am -
2 stops14h 29m
Mon 1/41:55 pm -
2 stops12h 36m
Deal found 10/1![United Airlines logo]()
$569
This Delta deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:26 pm -
2 stops12h 33m
Fri 10/165:19 pm -
1 stop9h 46m
Deal found 9/29![Delta logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 10/1. 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.
Thu 10/297:02 am -
1 stop9h 35m
Mon 11/27:29 pm -
1 stop7h 03m
Deal found 10/1![Alaska Airlines logo]()
$504
This Delta deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:00 am -
Nonstop6h 05m
Sat 11/289:38 pm -
Nonstop5h 05m
Deal found 10/3![Delta logo]()
$489
Last-minute flights from Philadelphia to WashingtonDiscover last-minute flight deals from Philadelphia to Washington. Data last updated October 3, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Washington. Data last updated October 3, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 9/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
1 stop12h 22m
Mon 10/199:16 pm -
1 stop31h 02m
Deal found 9/30![Frontier logo]()
$359
This Cheapflightsfares deal was found by Cheapflights users on 10/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:44 pm -
1 stop15h 14m
Fri 10/169:16 pm -
1 stop31h 02m
Deal found 10/1![Frontier logo]()
$365
This Expedia deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:50 am -
1 stop12h 22m
Fri 10/308:59 pm -
1 stop15h 15m
Deal found 9/29![Multiple Airlines logo]()
$364
This Mytrip deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:22 pm -
2 stops20h 37m
Tue 10/278:09 pm -
2 stops19h 10m
Deal found 9/29![Frontier logo]()
$366
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” 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 10/276:46 pm -
1 stop8h 13m
Tue 11/35:05 am -
2 stops9h 42m
Deal found 9/28![United Airlines logo]()
$362
This Mytrip deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:00 pm -
2 stops20h 59m
Wed 10/288:09 pm -
2 stops19h 10m
Deal found 9/29![Frontier logo]()
$363
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Thu 11/59:45 am -
2 stops14h 12m
Mon 11/91:49 pm -
1 stop6h 50m
Deal found 10/3![United Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 10/3. 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.
Fri 11/65:45 am -
1 stop9h 30m
Mon 11/97:37 pm -
1 stop7h 06m
Deal found 10/3![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 10/3. 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.
Fri 11/61:50 pm -
2 stops11h 35m
Mon 11/92:50 pm -
1 stop6h 20m
Deal found 10/3![Southwest logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:02 am -
1 stop10h 20m
Wed 11/114:39 pm -
1 stop9h 53m
Deal found 9/29![Alaska Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 9/30. 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.
Sun 11/227:00 am -
1 stop8h 15m
Thu 11/266:00 am -
1 stop8h 38m
Deal found 9/30![Delta logo]()
$355
This Delta deal was found by Cheapflights users on 9/30. 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 11/267:15 am -
1 stop7h 34m
Mon 11/305:04 pm -
1 stop9h 51m
Deal found 9/30![Delta logo]()
$361
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 October 3, 2026.
Search for one-way flight options from Philadelphia to Washington. Find affordable one-way fares based on user searches. Data last updated October 3, 2026.
This Southwest deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/185:00 am -
1 stop8h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Southwest logo]()
$190
This United Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
1 stop11h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![United Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 10/3. 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.
Wed 11/254:50 pm -
1 stop9h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Southwest logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 10/2912:36 pm -
2 stops29h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:09 pm -
2 stops21h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Mon 11/25:22 pm -
2 stops48h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Frontier logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/316:00 am -
2 stops39h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$214
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Fri 10/166:10 am -
1 stop8h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![United Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 10/3. 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.
Sat 12/56:40 pm -
2 stops48h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 10/2. 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.
Sun 11/18:30 am -
2 stops37h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Frontier logo]()
$220
This FlightHub deal was found by Cheapflights users on 9/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1510:00 am -
1 stop10h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Sun Country Air logo]()
$223
This Delta deal was found by Cheapflights users on 10/3. 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.
Sun 10/257:20 am -
1 stop7h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Delta logo]()
$224
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 October 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $341 (Alaska Airlines) |
One-way from | $190 (Southwest) |
Popular in | August |
Cheapest in | January |
Average price | $398 |
Good round-trip deal | $396 or less |
Good one-way deal | $244 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 7,457,451 searches. Data last updated October 3, 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
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Mon 11/2
5:15 pm-1:15 am
2 stops11h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$214
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Sun 12/13
5:00 am-6:00 pm
2 stops16h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$220
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sun 10/25
7:20 am-12:19 pm
1 stop7h 59m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$224
PhiladelphiaBellingham
PHL Philadelphia - BLI Bellingham
PHLBLI
Philadelphia
Tue 10/27
5:45 pm-1:40 pm
2 stops46h 55m
Bellingham
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$227
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Sat 10/31
6:41 pm-9:41 pm
Nonstop6h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Sat 11/14
7:00 am-10:05 am
Nonstop6h 05m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
Quickest round-trip
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Fri 10/30
7:02 am-9:55 am
Nonstop5h 53m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Fri 10/16
3:20 pm-11:45 pm
2 stops11h 25m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Thu 12/24
6:31 pm-12:19 am
1 stop8h 48m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$236
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Sat 12/5
12:22 pm-6:43 pm
1 stop9h 21m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$239
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-SEA
PHL-GEG
PHL-BLI
PHL-EAT
PHL-PSC
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-SEA
PHL-GEG
PHL-BLI
PHL-EAT
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 $353). Flying from Philadelphia to State of Washington in December is currently the most expensive (average of $475). 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 October 3, 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.
How much does it cost to fly round-trip from Philadelphia to State of Washington?
Airfare is typical for this route at the moment.
Philadelphia to State of Washington flights typically cost between $352 and $485 in October.The cheapest round-trip price found within the last 5 days was $359 on Frontier (Oct 16-Oct 19).
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 October 3, 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.
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Boarding
8.1
Food
7.0
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 October 3, 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 6 airlines flying from Philadelphia to Washington
Discover the top 6 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 7,457,451 searches. Data last updated October 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$157 | Average$271 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$163 | Average$478 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$243 | Average$474 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$263 | Average$443 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$271 | Average$430 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$284 | Average$443 | FlexibilityNo cancel fee | On-time71% |