$113+ Cheap flights from Washington to Philadelphia (PHL)
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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Oct 17 — Oct 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Washington to Philadelphia 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington to Philadelphia
Cheapest
Best
Last-minute
One-way
Cheapest flights from Washington to PhiladelphiaExplore the most affordable flight options available from Washington to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from Washington to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Delta deal was found by Cheapflights users on 9/15. 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 10/135:38 pm -
1 stop9h 06m
Tue 10/207:00 am -
1 stop8h 18m
Deal found 9/15![Delta logo]()
$225
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:59 pm -
1 stop6h 41m
Mon 11/235:35 am -
1 stop9h 31m
Deal found 9/15![Delta logo]()
$239
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:38 pm -
1 stop9h 06m
Tue 10/137:00 am -
1 stop8h 18m
Deal found 9/15![Delta logo]()
$254
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 11/185:00 am -
2 stops9h 47m
Mon 11/236:15 am -
1 stop7h 54m
Deal found 9/15![United Airlines logo]()
$258
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:25 pm -
1 stop7h 19m
Thu 10/225:20 am -
1 stop9h 30m
Deal found 9/16![Delta logo]()
$291
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:41 pm -
1 stop9h 02m
Sun 11/225:35 am -
1 stop9h 31m
Deal found 9/16![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:49 pm -
1 stop8h 36m
Wed 10/147:25 am -
1 stop7h 25m
Deal found 9/15![American Airlines logo]()
$300
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:35 am -
2 stops11h 00m
Tue 10/205:30 am -
1 stop7h 45m
Deal found 9/15![Southwest logo]()
$317
This American Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:08 pm -
1 stop7h 04m
Mon 11/29:27 am -
1 stop10h 12m
Deal found 9/12![American Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 9/15. 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 10/115:38 pm -
1 stop9h 06m
Fri 10/165:45 am -
1 stop9h 30m
Deal found 9/15![Delta logo]()
$356
This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:16 pm -
1 stop31h 02m
Sun 10/258:44 pm -
1 stop16h 04m
Deal found 9/16![Frontier logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/154:27 pm -
2 stops27h 44m
Tue 10/205:50 am -
1 stop12h 22m
Deal found 9/16![Frontier logo]()
$359
Best flights from Washington to PhiladelphiaDiscover carefully curated flight deals from Washington to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Washington to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:25 pm -
1 stop7h 19m
Thu 10/225:20 am -
1 stop9h 30m
Deal found 9/16![Delta logo]()
$291
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 1/265:02 am -
1 stop9h 09m
Wed 1/276:14 pm -
1 stop8h 43m
Deal found 9/16![Alaska Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/39:25 am -
2 stops9h 45m
Mon 12/77:30 am -
1 stop8h 20m
Deal found 9/15![Southwest logo]()
$369
This American Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:08 pm -
1 stop7h 04m
Mon 10/195:43 am -
1 stop9h 07m
Deal found 9/12![American Airlines logo]()
$431
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:00 am -
1 stop7h 54m
Sat 10/31:24 pm -
1 stop8h 28m
Deal found 9/12![United Airlines logo]()
$435
This Delta deal was found by Cheapflights users on 9/13. 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 11/185:41 pm -
1 stop9h 02m
Mon 11/235:35 am -
1 stop9h 31m
Deal found 9/13![Delta logo]()
$341
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:30 pm -
1 stop8h 35m
Fri 11/1311:40 am -
2 stops11h 40m
Deal found 9/15![Southwest logo]()
$383
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 11/49:28 pm -
Nonstop5h 04m
Mon 11/95:49 pm -
Nonstop6h 10m
Deal found 9/17![Alaska Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:08 pm -
1 stop8h 46m
Mon 11/237:00 am -
1 stop10h 46m
Deal found 9/16![Delta logo]()
$375
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:45 pm -
1 stop7h 25m
Mon 11/25:00 am -
2 stops11h 55m
Deal found 9/12![Southwest logo]()
$395
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 11/185:00 am -
2 stops13h 38m
Mon 11/2310:54 am -
2 stops13h 17m
Deal found 9/17![United Airlines logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/3110:25 pm -
Nonstop5h 12m
Mon 11/25:49 pm -
Nonstop6h 10m
Deal found 9/15![Alaska Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:38 pm -
1 stop9h 06m
Mon 10/197:20 am -
1 stop7h 59m
Deal found 9/15![Delta logo]()
$396
This Alaska Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:19 am -
Nonstop5h 19m
Tue 10/277:02 am -
Nonstop5h 53m
Deal found 9/12![Alaska Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:55 am -
1 stop9h 20m
Sun 10/256:45 am -
2 stops10h 00m
Deal found 9/16![Southwest logo]()
$401
This Southwest deal was found by Cheapflights users on 9/13. 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 10/1711:35 pm -
1 stop8h 25m
Sat 10/2411:40 am -
2 stops9h 50m
Deal found 9/13![Southwest logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 9/305:12 am -
1 stop7h 33m
Sun 10/44:17 pm -
1 stop9h 36m
Deal found 9/15![Alaska Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:06 pm -
1 stop7h 59m
Thu 10/16:52 pm -
1 stop7h 37m
Deal found 9/12![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 10/2410:43 am -
1 stop7h 46m
Tue 10/279:45 am -
2 stops14h 17m
Deal found 9/13![United Airlines logo]()
$528
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1012:10 am -
1 stop7h 50m
Fri 10/165:10 pm -
2 stops10h 50m
Deal found 9/15![Southwest logo]()
$411
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:21 pm -
2 stops9h 34m
Wed 12/97:10 am -
1 stop7h 31m
Deal found 9/15![Delta logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 2/26:25 am -
1 stop7h 46m
Sat 2/66:14 pm -
1 stop8h 39m
Deal found 9/16![Alaska Airlines logo]()
$452
This Southwest deal was found by Cheapflights users on 9/13. 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 11/146:45 am -
2 stops9h 20m
Mon 11/236:25 pm -
1 stop9h 10m
Deal found 9/13![Southwest logo]()
$424
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:20 am -
2 stops9h 19m
Wed 11/113:00 pm -
1 stop7h 44m
Deal found 9/17![Delta logo]()
$434
This Southwest deal was found by Cheapflights users on 9/14. 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.
Tue 10/206:15 am -
2 stops11h 50m
Sat 10/245:55 am -
2 stops11h 35m
Deal found 9/14![Southwest logo]()
$429
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 11/118:08 am -
1 stop18h 24m
Sat 11/217:00 am -
2 stops12h 40m
Deal found 9/13![Alaska Airlines logo]()
$476
This Delta deal was found by Cheapflights users on 9/13. 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 10/25:23 pm -
1 stop9h 42m
Fri 10/97:00 am -
1 stop10h 50m
Deal found 9/13![Delta logo]()
$454
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:10 am -
2 stops10h 50m
Mon 10/263:20 pm -
2 stops10h 25m
Deal found 9/12![Southwest logo]()
$447
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/611:17 pm -
1 stop6h 32m
Sun 12/136:59 pm -
1 stop8h 02m
Deal found 9/16![Delta logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 11/53:18 pm -
1 stop11h 14m
Wed 11/115:49 pm -
1 stop8h 49m
Deal found 9/16![Alaska Airlines logo]()
$507
Last-minute flights from Washington to PhiladelphiaDiscover last-minute flight deals from Washington to Philadelphia. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Philadelphia. Data last updated September 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:38 pm -
1 stop9h 06m
Tue 10/137:00 am -
1 stop8h 18m
Deal found 9/15![Delta logo]()
$254
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:49 pm -
1 stop8h 36m
Wed 10/147:25 am -
1 stop7h 25m
Deal found 9/15![American Airlines logo]()
$300
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/71:55 pm -
2 stops12h 46m
Tue 10/134:17 pm -
1 stop9h 36m
Deal found 9/15![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 9/15. 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 10/115:38 pm -
1 stop9h 06m
Fri 10/165:45 am -
1 stop9h 30m
Deal found 9/15![Delta logo]()
$356
This Delta deal was found by Cheapflights users on 9/15. 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 10/135:38 pm -
1 stop9h 06m
Tue 10/207:00 am -
1 stop8h 18m
Deal found 9/15![Delta logo]()
$225
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:35 am -
2 stops11h 00m
Tue 10/205:30 am -
1 stop7h 45m
Deal found 9/15![Southwest logo]()
$317
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:25 pm -
1 stop7h 19m
Thu 10/225:20 am -
1 stop9h 30m
Deal found 9/16![Delta logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/154:27 pm -
2 stops27h 44m
Tue 10/205:50 am -
1 stop12h 22m
Deal found 9/16![Frontier logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Tue 10/204:27 pm -
2 stops27h 44m
Sun 10/258:44 pm -
1 stop16h 04m
Deal found 9/16![Frontier logo]()
$360
This American Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:08 pm -
1 stop7h 04m
Sun 10/255:00 am -
1 stop9h 59m
Deal found 9/12![American Airlines logo]()
$355
This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:16 pm -
1 stop31h 02m
Sun 10/258:44 pm -
1 stop16h 04m
Deal found 9/16![Frontier logo]()
$358
This American Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:08 pm -
1 stop7h 04m
Mon 11/29:27 am -
1 stop10h 12m
Deal found 9/12![American Airlines logo]()
$353
One-way flights from Washington to PhiladelphiaSearch for one-way flight options from Washington to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Washington to Philadelphia. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:41 pm -
1 stop9h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Delta logo]()
$113
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 11/185:00 am -
2 stops9h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![United Airlines logo]()
$161
This Southwest deal was found by Cheapflights users on 9/13. 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 11/131:55 pm -
1 stop7h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Southwest logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Tue 10/138:00 pm -
2 stops24h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Fri 11/134:27 pm -
2 stops35h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$176
This Super.com deal was found by Cheapflights users on 9/13. 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.
Mon 10/129:16 pm -
1 stop31h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:27 pm -
2 stops27h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$178
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:16 pm -
2 stops25h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 12/38:55 pm -
2 stops44h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:16 pm -
1 stop31h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:14 pm -
2 stops32h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Tue 11/1712:14 pm -
2 stops27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$185
Find flight deals from Washington to Philadelphia
Keep the following information in mind while searching for Washington to Philadelphia flight deals. Data was last updated September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $225 (Delta) |
One-way from | $113 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $420 |
Good round-trip deal | $390 or less |
Good one-way deal | $268 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Philadelphia 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 September 17, 2026.
Use the filters below to find and compare flights from Washington to Philadelphia that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Fri 2/26
6:25 am-7:45 pm
1 stop10h 20m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$157
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Wed 11/18
5:00 am-5:47 pm
2 stops9h 47m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$161
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Mon 12/28
1:37 pm-11:44 pm
1 stop7h 07m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$171
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Tue 12/29
6:00 am-6:31 pm
1 stop9h 31m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$195
PortlandPhiladelphia
PDX Portland - PHL Philadelphia
PDXPHL
Portland
Wed 11/18
6:20 am-4:15 pm
1 stop6h 55m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$199
PortlandPhiladelphia
PDX Portland - PHL Philadelphia
PDXPHL
Portland
Wed 3/10
2:25 pm-12:55 am
1 stop7h 30m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$199
PortlandPhiladelphia
PDX Portland - PHL Philadelphia
PDXPHL
Portland
Wed 3/10
7:30 am-9:20 pm
1 stop10h 50m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$204
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Tue 12/29
6:30 pm-10:25 am
2 stops12h 55m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$205
PortlandPhiladelphia
PDX Portland - PHL Philadelphia
PDXPHL
Portland
Sat 11/14
1:33 pm-11:40 pm
1 stop7h 07m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$209
PortlandPhiladelphia
PDX Portland - PHL Philadelphia
PDXPHL
Portland
Wed 12/23
4:28 pm-5:31 am
1 stop10h 03m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$209
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Philadelphia
Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Washington with our price prediction graph.
GEG-PHL
SEA-PHL
PDX-PHL
PSC-PHL
YKM-PHL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Philadelphia
USWA-PHL
GEG-PHL
SEA-PHL
PDX-PHL
PSC-PHL
What is the cheapest month to book a flight from State of Washington to Philadelphia?
Currently, February is the cheapest month in which you can book a flight from State of Washington to Philadelphia (average of $330). Flying from State of Washington to Philadelphia in December is currently the most expensive (average of $536). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from WA to PHL?
Find hourly flight availability from Washington to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Philadelphia as you normally would.
Weekly flight availability from State of Washington to Philadelphia
Explore weekly flight availability from Washington to Philadelphia. 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 September 17, 2026.
The most flights from USWA to PHL are scheduled on a Tuesday (10 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from State of Washington to Philadelphia?
Airfare is below average for this route at the moment.
State of Washington to Philadelphia flights typically cost between $359 and $502 in October.The cheapest round-trip price found within the last 5 days was $358 on Frontier (Oct 22-Oct 25).
How far ahead should I book a flight from State of Washington to Philadelphia?
Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from State of Washington to Philadelphia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Related info for your journey
Find useful and relevant information for your journey from Washington to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWildwood
Reading
King of Prussia
Camden
Ocean City
Wildwood Crest
Cherry Hill
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Vineland
Millville
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Philadelphia flight routes
Popular flights
Top destinations
Alternative routes for Washington to Philadelphia
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Philadelphia by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington to Philadelphia by cabin class
Find flights from Washington to Philadelphia, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Philadelphia flights
Browse other Washington and Philadelphia flight options. Last updated on September 17, 2026.
Other flights to Philadelphia
Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Washington to Philadelphia flights
Consider these flights traveling from Washington to Philadelphia.
Top 6 airlines flying from Washington to Philadelphia
Discover the top 6 airlines that operate flights from Washington to Philadelphia. 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 September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$167 | Average$306 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$237 | Average$421 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$239 | Average$436 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$242 | Average$475 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$257 | Average$456 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$299 | Average$433 | FlexibilityNo cancel fee | On-time63% |