$99+ Cheap flights from Washington to Philadelphia (PHL)
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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Jul 1 — Jul 81
Round-trip
1 adult, Economy
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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 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 June 1, 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 June 1, 2026.
This Delta deal was found by Cheapflights users on 5/30. 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.
Wed 9/26:45 am
GEG
- PHL
1 stop8h 29m
Delta
Wed 9/97:05 am
PHL
- GEG
1 stop8h 57m
Delta
Deal found 5/30![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 5/30. 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 9/197:00 am
GEG
- PHL
1 stop8h 04m
Delta
Sat 9/266:00 am
PHL
- GEG
1 stop8h 28m
Delta
Deal found 5/30![Delta logo]()
$221
This Delta deal was found by Cheapflights users on 5/31. 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.
Tue 9/2912:38 pm
GEG
- PHL
1 stop9h 18m
Delta
Tue 10/133:10 pm
PHL
- GEG
1 stop7h 17m
Delta
Deal found 5/31![Delta logo]()
$238
This Delta deal was found by Cheapflights users on 5/29. 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.
Thu 7/165:37 pm
GEG
- PHL
1 stop8h 52m
Delta
Tue 7/217:05 am
PHL
- GEG
1 stop8h 06m
Delta
Deal found 5/29![Delta logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 5/31. 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.
Tue 6/95:00 am
GEG
- PHL
1 stop7h 45m
Alaska Airlines
Tue 6/164:26 pm
PHL
- GEG
1 stop10h 33m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/92:23 pm
GEG
- PHL
1 stop6h 35m
Delta
Tue 6/166:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 5/28![Delta logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 5/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:12 am
GEG
- PHL
1 stop7h 33m
Alaska Airlines
Wed 9/26:08 pm
PHL
- GEG
1 stop8h 51m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 5/31. 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.
Wed 12/165:00 pm
GEG
- PHL
1 stop9h 41m
Delta
Sun 1/35:30 am
PHL
- GEG
1 stop9h 08m
Delta
Deal found 5/31![Delta logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 5/31. 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.
Tue 6/95:00 am
GEG
- PHL
1 stop7h 45m
Alaska Airlines
Wed 6/104:26 pm
PHL
- GEG
1 stop10h 33m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/912:47 pm
GEG
- PHL
1 stop9h 12m
Delta
Wed 6/105:15 am
PHL
- GEG
1 stop9h 21m
Delta
Deal found 5/28![Delta logo]()
$323
This Delta deal was found by Cheapflights users on 6/1. 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.
Mon 8/249:29 pm
SEA
- PHL
Nonstop5h 11m
Delta
Fri 9/47:00 am
PHL
- SEA
Nonstop5h 56m
Delta
Deal found 6/1![Delta logo]()
$329
This American Airlines deal was found by Cheapflights users on 5/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/212:39 pm
SEA
- PHL
Nonstop5h 26m
American Airlines
Sat 7/117:35 pm
PHL
- SEA
Nonstop6h 21m
American Airlines
Deal found 5/29![American Airlines logo]()
$330
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 June 1, 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 June 1, 2026.
This Delta deal was found by Cheapflights users on 5/31. 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 7/167:08 pm
GEG
- PHL
1 stop8h 07m
Delta
Tue 7/217:05 am
PHL
- GEG
1 stop8h 06m
Delta
Deal found 5/31![Delta logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 5/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:27 pm
SEA
- PHL
Nonstop5h 13m
Alaska Airlines
Sat 9/124:48 pm
PHL
- SEA
1 stop8h 51m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 5/31. 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.
Tue 8/186:40 am
SEA
- PHL
2 stops8h 20m
Southwest
Tue 9/153:00 pm
PHL
- SEA
2 stops11h 05m
Southwest
Deal found 5/31![Southwest logo]()
$359
This Delta deal was found by Cheapflights users on 5/30. 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 10/155:00 pm
GEG
- PHL
1 stop9h 41m
Delta
Mon 10/197:05 am
PHL
- GEG
1 stop10h 40m
Delta
Deal found 5/30![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 5/31. 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.
Wed 7/155:37 pm
GEG
- PHL
1 stop8h 52m
Delta
Tue 7/217:05 am
PHL
- GEG
1 stop8h 06m
Delta
Deal found 5/31![Delta logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 10/1512:44 pm
GEG
- PHL
1 stop13h 56m
Alaska Airlines
Mon 10/196:39 pm
PHL
- GEG
1 stop8h 15m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 5/31. 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 6/112:23 pm
GEG
- PHL
1 stop6h 35m
Delta
Sun 6/146:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 5/31![Delta logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 11/129:59 pm
SEA
- PHL
1 stop14h 26m
Alaska Airlines
Sun 11/154:25 pm
PHL
- SEA
1 stop9h 09m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 5/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:15 am
GEG
- PHL
2 stops11h 50m
Southwest
Fri 10/304:40 pm
PHL
- GEG
1 stop8h 30m
Southwest
Deal found 5/28![Southwest logo]()
$392
This Delta deal was found by Cheapflights users on 5/31. 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 6/117:08 pm
GEG
- PHL
1 stop8h 00m
Delta
Wed 6/176:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 5/31![Delta logo]()
$301
This Southwest deal was found by Cheapflights users on 5/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:00 am
GEG
- PHL
2 stops11h 05m
Southwest
Sat 10/315:40 am
PHL
- GEG
1 stop7h 25m
Southwest
Deal found 5/28![Southwest logo]()
$392
This Delta deal was found by Cheapflights users on 5/31. 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 6/112:23 pm
GEG
- PHL
1 stop6h 35m
Delta
Tue 6/166:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 5/31![Delta logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:20 am
PSC
- PHL
1 stop7h 25m
Alaska Airlines
Wed 8/264:48 pm
PHL
- PSC
1 stop9h 00m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 5/29. 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.
Wed 7/152:55 pm
GEG
- PHL
1 stop7h 10m
Southwest
Wed 7/224:35 pm
PHL
- GEG
2 stops10h 15m
Southwest
Deal found 5/29![Southwest logo]()
$398
This Delta deal was found by Cheapflights users on 5/31. 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 10/19:30 pm
SEA
- PHL
Nonstop5h 20m
Delta
Sun 10/47:05 am
PHL
- SEA
Nonstop5h 51m
Delta
Deal found 5/31![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:15 am
PDX
- PHL
2 stops10h 25m
Southwest
Mon 7/276:55 pm
PHL
- PDX
1 stop8h 00m
Southwest
Deal found 5/27![Southwest logo]()
$410
This Alaska Airlines deal was found by Cheapflights users on 5/30. 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 10/275:15 am
EAT
- PHL
1 stop9h 24m
Alaska Airlines
Sat 10/317:00 am
PHL
- EAT
1 stop10h 26m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/139:20 pm
SEA
- PHL
Nonstop5h 09m
Delta
Wed 7/157:05 am
PHL
- SEA
Nonstop5h 56m
Delta
Deal found 5/27![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 5/29. 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 7/912:15 pm
PDX
- PHL
2 stops9h 30m
Southwest
Wed 7/154:35 pm
PHL
- PDX
2 stops10h 20m
Southwest
Deal found 5/29![Southwest logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 5/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:15 am
YKM
- PHL
1 stop7h 50m
Alaska Airlines
Sat 9/266:08 pm
PHL
- YKM
1 stop8h 47m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$447
This Delta deal was found by Cheapflights users on 5/29. 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 9/2311:59 pm
SEA
- PHL
1 stop7h 48m
Delta
Sun 9/277:05 am
PHL
- SEA
Nonstop5h 51m
Delta
Deal found 5/29![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 5/30. 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 7/162:15 pm
GEG
- PHL
1 stop7h 30m
Southwest
Tue 7/214:35 pm
PHL
- GEG
2 stops10h 15m
Southwest
Deal found 5/30![Southwest logo]()
$426
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 8/199:53 am
SEA
- PHL
1 stop6h 32m
Delta
Sun 8/237:00 am
PHL
- SEA
Nonstop5h 56m
Delta
Deal found 5/27![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:17 am
PDX
- PHL
Nonstop5h 06m
Alaska Airlines
Wed 7/15:46 pm
PHL
- PDX
Nonstop5h 51m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$457
This Southwest deal was found by Cheapflights users on 5/31. 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.
Thu 7/1612:15 pm
PDX
- PHL
2 stops9h 30m
Southwest
Mon 7/205:00 am
PHL
- PDX
1 stop9h 10m
Southwest
Deal found 5/31![Southwest logo]()
$442
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:53 am
SEA
- PHL
1 stop6h 32m
Delta
Wed 8/267:20 am
PHL
- SEA
1 stop10h 24m
Delta
Deal found 5/28![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 5/31. 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 7/1211:30 pm
PDX
- PHL
1 stop8h 05m
Southwest
Sat 7/1811:25 am
PHL
- PDX
2 stops11h 35m
Southwest
Deal found 5/31![Southwest logo]()
$442
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:10 am
SEA
- PHL
1 stop8h 06m
Delta
Sun 9/205:45 am
PHL
- SEA
1 stop7h 54m
Delta
Deal found 5/28![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:47 pm
EAT
- PHL
1 stop12h 26m
Alaska Airlines
Thu 7/164:26 pm
PHL
- EAT
1 stop10h 33m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$544
This Southwest deal was found by Cheapflights users on 5/31. 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.
Tue 6/305:10 am
PDX
- PHL
2 stops10h 30m
Southwest
Tue 7/711:25 am
PHL
- PDX
2 stops10h 35m
Southwest
Deal found 5/31![Southwest logo]()
$461
Last-minute flights from Washington to PhiladelphiaDiscover last-minute flight deals from Washington to Philadelphia. Data last updated June 1, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Philadelphia. Data last updated June 1, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/31. 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.
Tue 6/95:00 am
GEG
- PHL
1 stop7h 45m
Alaska Airlines
Tue 6/164:26 pm
PHL
- GEG
1 stop10h 33m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/92:23 pm
GEG
- PHL
1 stop6h 35m
Delta
Tue 6/166:45 pm
PHL
- GEG
1 stop8h 10m
Delta
Deal found 5/28![Delta logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 5/31. 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.
Tue 6/95:00 am
GEG
- PHL
1 stop7h 45m
Alaska Airlines
Wed 6/104:26 pm
PHL
- GEG
1 stop10h 33m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/912:47 pm
GEG
- PHL
1 stop9h 12m
Delta
Wed 6/105:15 am
PHL
- GEG
1 stop9h 21m
Delta
Deal found 5/28![Delta logo]()
$323
This American Airlines deal was found by Cheapflights users on 5/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:30 am
GEG
- PHL
1 stop11h 26m
American Airlines
Sat 6/134:17 pm
PHL
- GEG
1 stop9h 52m
American Airlines
Deal found 5/31![American Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 5/31. 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.
Tue 6/912:35 pm
GEG
- PHL
1 stop9h 25m
Southwest
Sat 6/131:45 pm
PHL
- GEG
2 stops11h 15m
Southwest
Deal found 5/31![Southwest logo]()
$328
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/129:25 am
SEA
- PHL
Nonstop5h 10m
Delta
Tue 6/236:45 pm
PHL
- SEA
Nonstop6h 14m
Delta
Deal found 5/28![Delta logo]()
$329
This American Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 6/2410:35 pm
SEA
- PHL
Nonstop5h 12m
American Airlines
Mon 6/297:35 pm
PHL
- SEA
Nonstop6h 23m
American Airlines
Deal found 5/30![American Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 5/30. 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.
Fri 6/267:08 pm
GEG
- PHL
1 stop8h 00m
Delta
Mon 7/65:40 am
PHL
- GEG
1 stop9h 00m
Delta
Deal found 5/30![Delta logo]()
$279
This American Airlines deal was found by Cheapflights users on 5/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/262:01 pm
GEG
- PHL
1 stop7h 38m
American Airlines
Sun 7/55:00 am
PHL
- GEG
1 stop9h 59m
American Airlines
Deal found 5/29![American Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 5/29. 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.
Sat 6/2712:47 pm
GEG
- PHL
1 stop9h 13m
Delta
Sat 7/43:38 pm
PHL
- GEG
1 stop6h 48m
Delta
Deal found 5/29![Delta logo]()
$359
This Expedia deal was found by Cheapflights users on 6/1. 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.
Tue 6/307:41 pm
GEG
- PHL
1 stop16h 42m
Alaska Airlines
Sat 7/45:46 pm
PHL
- GEG
1 stop8h 13m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$354
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 June 1, 2026.
Search for one-way flight options from Washington to Philadelphia. Find affordable one-way fares based on user searches. Data last updated June 1, 2026.
This Delta deal was found by Cheapflights users on 5/29. 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.
Tue 8/255:39 pm
GEG
- PHL
1 stop9h 01m
Delta
Deal found 5/29![Delta logo]()
$99
This Delta deal was found by Cheapflights users on 5/29. 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 6/242:23 pm
GEG
- PHL
1 stop6h 35m
Delta
Deal found 5/29![Delta logo]()
$140
This United Airlines deal was found by Cheapflights users on 5/28. 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.
Wed 6/2412:37 pm
GEG
- PHL
1 stop9h 52m
United Airlines
Deal found 5/28![United Airlines logo]()
$145
This American Airlines deal was found by Cheapflights users on 5/30. 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.
Tue 8/256:30 am
GEG
- PHL
1 stop11h 10m
American Airlines
Deal found 5/30![American Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:05 am
GEG
- PHL
1 stop8h 30m
Delta
Deal found 5/28![Delta logo]()
$162
This Delta deal was found by Cheapflights users on 6/1. 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.
Fri 7/249:20 pm
SEA
- PHL
Nonstop5h 09m
Delta
Deal found 6/1![Delta logo]()
$165
This Alaska Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/305:00 am
GEG
- PHL
1 stop7h 23m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$170
This Delta deal was found by Cheapflights users on 6/1. 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.
Tue 8/2511:59 pm
SEA
- PHL
1 stop7h 48m
Delta
Deal found 6/1![Delta logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 5/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:13 pm
SEA
- PHL
2 stops41h 35m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$177
This Super.com deal was found by Cheapflights users on 5/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:12 pm
SEA
- PHL
1 stop31h 15m
Frontier
Deal found 5/29![Frontier logo]()
$179
This United Airlines deal was found by Cheapflights users on 5/28. 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.
Fri 7/33:33 pm
SEA
- PHL
2 stops10h 58m
United Airlines
Deal found 5/28![United Airlines logo]()
$180
This United Airlines deal was found by Cheapflights users on 5/31. 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.
Wed 6/241:30 pm
SEA
- PHL
1 stop8h 59m
United Airlines
Deal found 5/31![United Airlines 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 June 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Delta) |
One-way from | $99 (Delta) |
Popular in | December |
Cheapest in | October |
Average price | $472 |
Good round-trip deal | $372 or less |
Good one-way deal | $201 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 2,558,603 searches. Data last updated June 1, 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 - PHL
GEGPHL
Spokane
Thu 7/16
7:08 pm-6:15 am
1 stop8h 07m
Philadelphia
Tue 7/21
7:05 am-12:11 pm
1 stop8h 06m
$279
SpokanePhiladelphia
GEG - PHL
GEGPHL
Spokane
Thu 10/15
5:00 pm-5:41 am
1 stop9h 41m
Philadelphia
Mon 10/19
7:05 am-2:45 pm
1 stop10h 40m
$279
SpokanePhiladelphia
GEG - PHL
GEGPHL
Spokane
Wed 7/15
5:37 pm-5:29 am
1 stop8h 52m
Philadelphia
Tue 7/21
7:05 am-12:11 pm
1 stop8h 06m
$279
SpokanePhiladelphia
GEG - PHL
GEGPHL
Spokane
Thu 6/11
2:23 pm-11:58 pm
1 stop6h 35m
Philadelphia
Sun 6/14
6:45 pm-11:55 pm
1 stop8h 10m
$301
SpokanePhiladelphia
GEG - PHL
GEGPHL
Spokane
Thu 6/11
7:08 pm-6:08 am
1 stop8h 00m
Philadelphia
Wed 6/17
6:45 pm-11:55 pm
1 stop8h 10m
$301
SpokanePhiladelphia
GEG - PHL
GEGPHL
Spokane
Thu 6/11
2:23 pm-11:58 pm
1 stop6h 35m
Philadelphia
Tue 6/16
6:45 pm-11:55 pm
1 stop8h 10m
$301
SeattlePhiladelphia
SEA - PHL
SEAPHL
Seattle/Tacoma Intl
Thu 10/1
9:30 pm-5:50 am
Nonstop5h 20m
Philadelphia
Sun 10/4
7:05 am-9:56 am
Nonstop5h 51m
$329
SeattlePhiladelphia
SEA - PHL
SEAPHL
Seattle/Tacoma Intl
Mon 7/13
9:20 pm-5:29 am
Nonstop5h 09m
Philadelphia
Wed 7/15
7:05 am-10:01 am
Nonstop5h 56m
$329
SeattlePhiladelphia
SEA - PHL
SEAPHL
Seattle/Tacoma Intl
Sun 9/6
9:27 pm-5:40 am
Nonstop5h 13m
Philadelphia
Sat 9/12
4:48 pm-10:39 pm
1 stop8h 51m
$339
SpokanePhiladelphia
GEG - PHL
GEGPHL
Spokane
Thu 10/15
12:44 pm-5:40 am
1 stop13h 56m
Philadelphia
Mon 10/19
6:39 pm-11:54 pm
1 stop8h 15m
$339
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
EAT-PHL
PSC-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
EAT-PHL
What is the cheapest month to book a flight from State of Washington to Philadelphia?
Currently, July is the cheapest month in which you can book a flight from State of Washington to Philadelphia (average of $128). Flying from State of Washington to Philadelphia in May is currently the most expensive (average of $241). 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 June 1, 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 June 1, 2026.
The most flights from USWA to PHL are scheduled on a Friday (9 on average). You will have fewer flight options on Tuesday, 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?
How far ahead should I book a flight from State of Washington to Philadelphia?
Booking 80 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
King of Prussia
Reading
Camden
Ocean City
Cherry Hill
Lewes
Dewey Beach
Pottstown
Ephrata
Milford
Wildwood Crest
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Vineland
Glen Mills
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Washington to Philadelphia
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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 June 1, 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 June 1, 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 7 airlines flying from Washington to Philadelphia
Discover the top 7 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 2,558,603 searches. Data last updated June 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$484 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$148 | Average$407 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$295 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$206 | Average$461 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$223 | Average$502 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$257 | Average$430 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$295 | Average$490 | FlexibilityNo cancel fee | On-time63% |