$169+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Oct 8 — Oct 151
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
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 Philadelphia to Washington
Cheapest
Best
Last-minute
One-way
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 September 8, 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 September 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Wed 10/215:22 pm -
2 stops18h 36m
Sun 10/254:27 pm -
1 stop29h 49m
Deal found 9/3![Frontier logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Mon 10/55:59 pm -
2 stops24h 09m
Sat 10/104:27 pm -
1 stop29h 49m
Deal found 9/3![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:50 am -
1 stop12h 22m
Wed 10/2812:14 pm -
2 stops32h 34m
Deal found 9/4![Frontier logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/65:32 pm -
2 stops19h 10m
Sat 10/104:27 pm -
1 stop29h 49m
Deal found 9/7![Frontier logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:50 am -
1 stop12h 22m
Fri 11/64:27 pm -
2 stops27h 57m
Deal found 9/4![Frontier logo]()
$337
This Super.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:44 pm -
1 stop15h 14m
Sat 10/244:27 pm -
1 stop29h 49m
Deal found 9/4![Frontier logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:44 pm -
1 stop15h 14m
Mon 10/129:16 pm -
2 stops22h 55m
Deal found 9/4![Frontier logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 9/6![Alaska Airlines logo]()
$341
This CheapOair deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:50 am -
1 stop12h 22m
Sun 10/259:16 pm -
1 stop31h 02m
Deal found 9/7![Frontier logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/118:59 pm -
1 stop15h 49m
Tue 10/2712:14 pm -
2 stops27h 05m
Deal found 9/6![Frontier logo]()
$345
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:45 pm -
2 stops10h 05m
Tue 11/101:35 pm -
1 stop6h 50m
Deal found 9/4![Southwest logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:50 am -
1 stop12h 22m
Wed 10/214:27 pm -
1 stop29h 49m
Deal found 9/4![Frontier logo]()
$346
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 September 8, 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 September 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 9/7![Alaska Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 9/3. 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.
Mon 9/285:20 am -
1 stop9h 08m
Tue 9/295:49 pm -
1 stop9h 01m
Deal found 9/3![Delta logo]()
$341
This American Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:55 pm -
1 stop10h 30m
Sat 10/102:08 pm -
1 stop7h 04m
Deal found 9/6![American Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:45 pm -
2 stops10h 05m
Tue 11/101:35 pm -
1 stop6h 50m
Deal found 9/4![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 11/219:45 am -
2 stops14h 26m
Wed 12/25:05 am -
1 stop7h 31m
Deal found 9/3![United Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/312:40 pm -
2 stops28h 00m
Thu 10/84:58 pm -
1 stop11h 20m
Deal found 9/3![Multiple Airlines logo]()
$593
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:05 pm -
1 stop7h 35m
Sat 10/1012:55 pm -
1 stop7h 20m
Deal found 9/3![Southwest logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/134:17 pm -
Nonstop5h 48m
Tue 10/207:00 am -
Nonstop5h 14m
Deal found 9/6![Alaska Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Sat 10/1710:40 am -
1 stop8h 11m
Mon 11/27:00 am -
1 stop7h 47m
Deal found 9/3![United Airlines logo]()
$393
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:10 pm -
1 stop8h 20m
Sat 10/36:30 am -
2 stops13h 40m
Deal found 9/5![Southwest logo]()
$359
This Delta deal was found by Cheapflights users on 9/3. 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 10/207:00 am -
1 stop8h 02m
Wed 10/286:00 am -
1 stop8h 39m
Deal found 9/3![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:46 pm -
Nonstop6h 10m
Fri 11/279:36 am -
Nonstop5h 07m
Deal found 9/4![Alaska Airlines logo]()
$379
This Southwest deal was found by Cheapflights users on 9/3. 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.
Tue 10/207:45 am -
2 stops10h 20m
Tue 10/276:30 am -
1 stop7h 15m
Deal found 9/3![Southwest logo]()
$362
This Delta deal was found by Cheapflights users on 9/3. 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.
Thu 10/17:05 am -
1 stop10h 40m
Sun 10/45:23 pm -
1 stop9h 42m
Deal found 9/3![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 11/57:02 am -
Nonstop6h 06m
Thu 11/129:28 pm -
Nonstop5h 04m
Deal found 9/7![Alaska Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/34:15 pm -
1 stop8h 00m
Sat 10/106:30 am -
2 stops13h 45m
Deal found 9/6![Southwest logo]()
$371
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:59 pm -
1 stop7h 56m
Sun 10/119:30 pm -
Nonstop5h 14m
Deal found 9/5![Delta logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:00 am -
Nonstop5h 51m
Sat 10/39:19 am -
Nonstop5h 19m
Deal found 9/7![Alaska Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 9/3. 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.
Mon 11/25:15 pm -
2 stops11h 05m
Fri 11/611:30 pm -
1 stop8h 15m
Deal found 9/3![Southwest logo]()
$379
This KAYAK deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:00 am -
Nonstop5h 58m
Sat 10/1711:50 pm -
1 stop7h 59m
Deal found 9/4![Delta logo]()
$431
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am -
Nonstop5h 51m
Tue 10/69:29 pm -
Nonstop5h 12m
Deal found 9/6![Alaska Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:15 pm -
2 stops10h 40m
Sun 11/156:15 am -
1 stop7h 20m
Deal found 9/4![Southwest logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:17 pm -
Nonstop5h 48m
Tue 10/207:09 am -
1 stop7h 29m
Deal found 9/6![Alaska Airlines logo]()
$407
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 9/287:00 am -
Nonstop5h 51m
Tue 10/69:29 pm -
Nonstop5h 12m
Deal found 9/6![Alaska Airlines logo]()
$411
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/311:40 am -
2 stops13h 00m
Sat 10/1012:10 am -
1 stop7h 50m
Deal found 9/5![Southwest logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/17:00 am -
Nonstop5h 51m
Tue 10/69:29 pm -
Nonstop5h 12m
Deal found 9/6![Alaska Airlines logo]()
$411
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:05 pm -
1 stop8h 10m
Mon 9/2811:30 pm -
2 stops10h 35m
Deal found 9/3![Southwest logo]()
$425
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 1/66:14 pm -
1 stop8h 39m
Fri 1/155:25 am -
1 stop8h 46m
Deal found 9/6![Alaska Airlines logo]()
$417
This American Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/712:05 pm -
2 stops14h 37m
Wed 10/143:00 pm -
2 stops11h 26m
Deal found 9/6![American Airlines logo]()
$915
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/146:00 am -
2 stops10h 50m
Tue 10/206:30 am -
2 stops8h 25m
Deal found 9/6![Southwest logo]()
$427
Last-minute flights from Philadelphia to WashingtonDiscover last-minute flight deals from Philadelphia to Washington. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to Washington. Data last updated September 8, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/3. 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.
Sat 10/37:05 am -
1 stop8h 15m
Sat 10/104:30 pm -
1 stop10h 13m
Deal found 9/3![Delta logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Mon 10/55:59 pm -
2 stops24h 09m
Sat 10/104:27 pm -
1 stop29h 49m
Deal found 9/3![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/65:32 pm -
2 stops19h 10m
Sat 10/104:27 pm -
1 stop29h 49m
Deal found 9/7![Frontier logo]()
$336
This Super.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:44 pm -
1 stop15h 14m
Sat 10/244:27 pm -
1 stop29h 49m
Deal found 9/4![Frontier logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:44 pm -
1 stop15h 14m
Mon 10/129:16 pm -
2 stops22h 55m
Deal found 9/4![Frontier logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/118:59 pm -
1 stop15h 49m
Tue 10/2712:14 pm -
2 stops27h 05m
Deal found 9/6![Frontier logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:50 am -
1 stop12h 22m
Wed 10/214:27 pm -
1 stop29h 49m
Deal found 9/4![Frontier logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:50 am -
1 stop12h 22m
Wed 10/2812:14 pm -
2 stops32h 34m
Deal found 9/4![Frontier logo]()
$335
This CheapOair deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:50 am -
1 stop12h 22m
Sun 10/259:16 pm -
1 stop31h 02m
Deal found 9/7![Frontier logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:50 am -
1 stop12h 22m
Fri 11/64:27 pm -
2 stops27h 57m
Deal found 9/4![Frontier logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Wed 10/215:22 pm -
2 stops18h 36m
Sun 10/254:27 pm -
1 stop29h 49m
Deal found 9/3![Frontier logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:50 am -
1 stop12h 22m
Thu 10/298:09 pm -
2 stops32h 12m
Deal found 9/4![Frontier logo]()
$347
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 September 8, 2026.
Search for one-way flight options from Philadelphia to Washington. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 12/16:48 pm -
2 stops24h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:36 pm -
2 stops29h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$170
This Priceline deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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.
Sat 10/177:02 am -
1 stop8h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Alaska Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:22 pm -
2 stops24h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/2512:35 pm -
2 stops24h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Tue 9/2912:40 pm -
2 stops24h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Mon 10/58:41 am -
2 stops28h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” 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 10/712:40 pm -
2 stops29h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$178
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:10 am -
1 stop12h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$179
This Super.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 11/258:38 pm -
1 stop21h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$180
This Delta deal was found by Cheapflights users on 9/3. 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 9/256:52 pm -
1 stop7h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/226:03 pm -
2 stops24h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$183
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $333 (Kiwi.com) |
One-way from | $169 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $394 |
Good round-trip deal | $397 or less |
Good one-way deal | $209 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 September 8, 2026.
Use the filters below to find and compare flights from Philadelphia to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sat 10/17
7:02 am-12:54 pm
1 stop8h 52m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$171
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Fri 9/25
6:52 pm-11:29 pm
1 stop7h 37m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$183
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Sat 11/7
1:16 pm-9:19 pm
2 stops11h 03m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$184
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sun 11/22
7:00 am-12:15 pm
1 stop8h 15m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$185
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sat 10/17
11:20 am-8:49 pm
2 stops12h 29m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$187
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Sun 11/22
10:54 am-9:11 pm
2 stops13h 17m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$190
PhiladelphiaSpokane
PHL Philadelphia - GEG Spokane
PHLGEG
Philadelphia
Fri 10/9
6:49 pm-11:44 pm
1 stop7h 55m
Spokane
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$193
PhiladelphiaPortland
PHL Philadelphia - PDX Portland
PHLPDX
Philadelphia
Wed 10/7
12:40 pm-10:54 am
2 stops25h 14m
Portland
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$194
PhiladelphiaPortland
PHL Philadelphia - PDX Portland
PHLPDX
Philadelphia
Wed 10/7
5:30 pm-11:10 pm
1 stop8h 40m
Portland
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$195
PhiladelphiaSeattle
PHL Philadelphia - SEA Seattle/Tacoma Intl
PHLSEA
Philadelphia
Tue 9/29
5:10 pm-11:10 pm
1 stop9h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$197
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-PDX
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-PDX
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 $333). Flying from Philadelphia to State of Washington in December is currently the most expensive (average of $478). 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 September 8, 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 $329 and $482 in October.The cheapest round-trip price found within the last 5 days was $333 on Frontier (Oct 21-Oct 25).
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 September 8, 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.
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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
Popular flights
Top destinations
Alternative routes for Philadelphia to Washington
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Washington by adding a car rental and/or hotel reservation to your travel itinerary.
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 September 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Philadelphia to Washington flights
Consider these flights traveling from Philadelphia to Washington.
Top 7 airlines flying from Philadelphia to Washington
Discover the top 7 airlines that operate flights from Philadelphia to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$357 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$287 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$163 | Average$455 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$237 | Average$511 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$253 | Average$437 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$271 | Average$459 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$275 | Average$433 | FlexibilityNo cancel fee | On-time71% |