$113+ Cheap flights from Washington to Pennsylvania
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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Apr 18 — Apr 251
Round-trip
1 adult, Economy
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Cheapest flights from Washington to PennsylvaniaExplore the most affordable flight options available from Washington to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.
Explore the most affordable flight options available from Washington to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.
This Mytrip deal was found by Cheapflights users on 3/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:12 pm
SEA
- DCA
1 stop23h 47m
Frontier
Tue 4/211:59 pm
DCA
- SEA
1 stop22h 28m
Frontier
Deal found 3/15![Frontier logo]()
$223
This Southwest deal was found by Cheapflights users on 3/15. 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 4/165:15 am
SEA
- DCA
1 stop11h 40m
Southwest
Tue 4/217:55 am
DCA
- SEA
1 stop7h 50m
Southwest
Deal found 3/15![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 3/15. 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.
Wed 4/299:20 am
SEA
- IAD
2 stops11h 20m
Southwest
Wed 5/65:30 pm
IAD
- SEA
1 stop9h 05m
Southwest
Deal found 3/15![Southwest logo]()
$224
This CheapOair deal was found by Cheapflights users on 3/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:07 pm
SEA
- DCA
1 stop17h 52m
Frontier
Sun 4/198:00 am
DCA
- SEA
1 stop28h 27m
Frontier
Deal found 3/15![Frontier logo]()
$226
This Booking.com deal was found by Cheapflights users on 3/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:42 pm
SEA
- DCA
1 stop30h 17m
Frontier
Thu 4/168:00 am
DCA
- SEA
1 stop10h 05m
Frontier
Deal found 3/17![Frontier logo]()
$227
This Booking.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:12 pm
SEA
- DCA
1 stop23h 47m
Frontier
Mon 4/206:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Deal found 3/18![Frontier logo]()
$228
This Southwest deal was found by Cheapflights users on 3/15. 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.
Wed 4/299:20 am
SEA
- DCA
2 stops11h 05m
Southwest
Wed 5/64:50 pm
DCA
- SEA
2 stops10h 05m
Southwest
Deal found 3/15![Southwest logo]()
$229
This Alaska Airlines deal was found by Cheapflights users on 3/17. 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.
Fri 4/2410:00 am
SEA
- IAD
Nonstop5h 20m
Alaska Airlines
Tue 4/286:47 pm
IAD
- SEA
1 stop17h 39m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$229
This Southwest deal was found by Cheapflights users on 3/16. 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.
Thu 4/165:15 am
SEA
- DCA
1 stop11h 40m
Southwest
Wed 4/224:50 pm
DCA
- SEA
2 stops10h 05m
Southwest
Deal found 3/16![Southwest logo]()
$230
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 5/46:30 am
SEA
- IAD
2 stops14h 50m
Southwest
Sat 5/95:05 pm
IAD
- SEA
1 stop8h 05m
Southwest
Deal found 3/19![Southwest logo]()
$230
This CheapOair deal was found by Cheapflights users on 3/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Fri 4/248:00 am
DCA
- SEA
1 stop10h 05m
Frontier
Deal found 3/17![Frontier logo]()
$231
This CheapOair deal was found by Cheapflights users on 3/16. 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 5/288:20 pm
SEA
- IAD
1 stop8h 52m
Frontier
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 3/16![Frontier logo]()
$231
Best flights from Washington to PennsylvaniaDiscover carefully curated flight deals from Washington to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 19, 2026.
Discover carefully curated flight deals from Washington to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 19, 2026.
This United Airlines deal was found by Cheapflights users on 3/17. 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 7/13:23 pm
SEA
- EWR
Nonstop5h 26m
United Airlines
Tue 7/76:00 am
EWR
- SEA
1 stop8h 51m
United Airlines
Deal found 3/17![United Airlines logo]()
$289
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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.
Fri 4/179:55 pm
SEA
- PHL
Nonstop5h 10m
Alaska Airlines
Tue 4/217:25 am
PHL
- SEA
Nonstop6h 05m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 3/17. 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.
Sat 4/184:00 pm
SEA
- JFK
Nonstop5h 20m
Delta
Sat 4/257:00 pm
JFK
- SEA
Nonstop6h 31m
Delta
Deal found 3/17![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 3/16. 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.
Thu 4/305:15 am
SEA
- LGA
1 stop7h 35m
Southwest
Thu 4/305:50 pm
LGA
- SEA
1 stop9h 15m
Southwest
Deal found 3/16![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 4/1810:55 pm
SEA
- EWR
Nonstop5h 21m
United Airlines
Sat 4/253:07 pm
EWR
- SEA
1 stop8h 46m
United Airlines
Deal found 3/19![United Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 3/14. 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.
Sat 4/186:40 am
SEA
- LGA
2 stops12h 35m
Southwest
Sat 4/259:55 am
LGA
- SEA
2 stops11h 20m
Southwest
Deal found 3/14![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 3/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
SEA
- IAD
1 stop9h 23m
United Airlines
Fri 4/245:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Deal found 3/14![United Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 3/16. 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.
Tue 4/147:30 am
SEA
- DCA
Nonstop4h 57m
Delta
Tue 4/212:55 pm
DCA
- SEA
1 stop8h 47m
Delta
Deal found 3/16![Delta logo]()
$323
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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 5/61:43 pm
SEA
- DCA
Nonstop5h 16m
Alaska Airlines
Wed 5/138:59 am
DCA
- SEA
1 stop14h 29m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$336
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 4/2511:15 pm
PDX
- EWR
Nonstop5h 14m
United Airlines
Mon 4/276:52 pm
EWR
- PDX
Nonstop6h 07m
United Airlines
Deal found 3/18![United Airlines logo]()
$292
This Southwest deal was found by Cheapflights users on 3/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/111:55 pm
SEA
- LGA
1 stop8h 00m
Southwest
Fri 5/83:40 pm
LGA
- SEA
1 stop11h 25m
Southwest
Deal found 3/17![Southwest logo]()
$322
This Delta deal was found by Cheapflights users on 3/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/99:20 pm
SEA
- PHL
Nonstop5h 17m
Delta
Tue 5/125:18 pm
PHL
- SEA
1 stop8h 30m
Delta
Deal found 3/14![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 3/16. 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 4/309:27 pm
PDX
- IAD
1 stop17h 14m
Alaska Airlines
Mon 5/46:47 pm
IAD
- PDX
1 stop18h 01m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 6/99:58 pm
SEA
- EWR
1 stop7h 56m
Delta
Sun 8/306:00 am
EWR
- SEA
1 stop9h 53m
Delta
Deal found 3/18![Delta logo]()
$328
This United Airlines deal was found by Cheapflights users on 3/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:35 pm
SEA
- EWR
1 stop7h 35m
United Airlines
Fri 4/244:55 pm
EWR
- SEA
1 stop8h 38m
United Airlines
Deal found 3/14![United Airlines logo]()
$299
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 4/181:00 pm
SEA
- IAD
1 stop6h 55m
Southwest
Sat 4/255:05 pm
IAD
- SEA
1 stop8h 05m
Southwest
Deal found 3/19![Southwest logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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.
Fri 8/288:00 am
SEA
- JFK
1 stop7h 57m
Alaska Airlines
Wed 9/25:29 pm
JFK
- SEA
1 stop8h 31m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 6/99:50 pm
SEA
- PHL
Nonstop5h 15m
Delta
Sun 8/307:05 am
PHL
- SEA
Nonstop5h 59m
Delta
Deal found 3/18![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 4/2411:59 pm
PDX
- LGA
1 stop8h 19m
United Airlines
Tue 4/281:10 pm
LGA
- PDX
1 stop8h 24m
United Airlines
Deal found 3/19![United Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 6/95:00 am
SEA
- PHL
2 stops9h 00m
Southwest
Sun 8/306:20 am
PHL
- SEA
1 stop9h 55m
Southwest
Deal found 3/18![Southwest logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 3/16. 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.
Wed 8/262:50 pm
PDX
- EWR
Nonstop5h 23m
Alaska Airlines
Wed 9/24:33 pm
EWR
- PDX
1 stop9h 42m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 6/93:30 pm
SEA
- JFK
Nonstop5h 39m
Delta
Sun 8/307:05 am
JFK
- SEA
Nonstop6h 19m
Delta
Deal found 3/18![Delta logo]()
$336
This United Airlines deal was found by Cheapflights users on 3/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:59 pm
PDX
- EWR
1 stop7h 21m
United Airlines
Fri 4/244:55 pm
EWR
- PDX
1 stop8h 59m
United Airlines
Deal found 3/14![United Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 3/14. 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.
Thu 4/2311:55 pm
SEA
- DCA
1 stop11h 05m
Southwest
Fri 4/245:15 pm
DCA
- SEA
2 stops10h 25m
Southwest
Deal found 3/14![Southwest logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 3/17. 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.
Sat 5/210:09 pm
SEA
- EWR
Nonstop5h 30m
Alaska Airlines
Sat 5/95:56 pm
EWR
- SEA
Nonstop6h 14m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 3/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/127:35 pm
SEA
- PHL
1 stop7h 08m
Delta
Sun 9/276:40 pm
PHL
- SEA
1 stop8h 21m
Delta
Deal found 3/14![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Tue 3/315:00 am
SEA
- IAD
1 stop7h 46m
United Airlines
Tue 4/712:43 pm
IAD
- SEA
1 stop8h 17m
United Airlines
Deal found 3/17![United Airlines logo]()
$328
This Alaska Airlines deal was found by Cheapflights users on 3/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/221:52 pm
PDX
- IAD
1 stop12h 58m
Alaska Airlines
Sun 4/267:10 am
IAD
- PDX
1 stop15h 24m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 3/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/19:00 am
SEA
- DCA
2 stops10h 20m
Southwest
Wed 4/83:40 pm
DCA
- SEA
1 stop11h 30m
Southwest
Deal found 3/17![Southwest logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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 4/291:52 pm
PDX
- IAD
1 stop12h 58m
Alaska Airlines
Sun 5/37:10 am
IAD
- PDX
1 stop15h 24m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$365
Last-minute flights from Washington to PennsylvaniaDiscover last-minute flight deals from Washington to Pennsylvania. Data last updated March 19, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Pennsylvania. Data last updated March 19, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 3/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:42 pm
SEA
- DCA
1 stop30h 17m
Frontier
Thu 4/168:00 am
DCA
- SEA
1 stop10h 05m
Frontier
Deal found 3/17![Frontier logo]()
$227
This Mytrip deal was found by Cheapflights users on 3/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:12 pm
SEA
- DCA
1 stop23h 47m
Frontier
Tue 4/211:59 pm
DCA
- SEA
1 stop22h 28m
Frontier
Deal found 3/15![Frontier logo]()
$223
This Booking.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:12 pm
SEA
- DCA
1 stop23h 47m
Frontier
Mon 4/206:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Deal found 3/18![Frontier logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Tue 4/147:12 pm
SEA
- DCA
1 stop23h 47m
Frontier
Wed 4/228:00 am
DCA
- SEA
2 stops36h 42m
Frontier
Deal found 3/15![Frontier logo]()
$232
This CheapOair deal was found by Cheapflights users on 3/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:07 pm
SEA
- DCA
1 stop17h 52m
Frontier
Sun 4/198:00 am
DCA
- SEA
1 stop28h 27m
Frontier
Deal found 3/15![Frontier logo]()
$226
This Southwest deal was found by Cheapflights users on 3/15. 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 4/165:15 am
SEA
- DCA
1 stop11h 40m
Southwest
Tue 4/217:55 am
DCA
- SEA
1 stop7h 50m
Southwest
Deal found 3/15![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 3/16. 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.
Thu 4/165:15 am
SEA
- DCA
1 stop11h 40m
Southwest
Wed 4/224:50 pm
DCA
- SEA
2 stops10h 05m
Southwest
Deal found 3/16![Southwest logo]()
$230
This CheapOair deal was found by Cheapflights users on 3/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Fri 4/248:00 am
DCA
- SEA
1 stop10h 05m
Frontier
Deal found 3/17![Frontier logo]()
$231
This Alaska Airlines deal was found by Cheapflights users on 3/17. 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.
Fri 4/2410:00 am
SEA
- IAD
Nonstop5h 20m
Alaska Airlines
Tue 4/286:47 pm
IAD
- SEA
1 stop17h 39m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$229
This Trip.com deal was found by Cheapflights users on 3/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:12 pm
SEA
- DCA
1 stop14h 48m
Frontier
Sat 5/26:00 pm
DCA
- SEA
1 stop18h 27m
Frontier
Deal found 3/16![Frontier logo]()
$233
This Southwest deal was found by Cheapflights users on 3/15. 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.
Wed 4/299:20 am
SEA
- IAD
2 stops11h 20m
Southwest
Wed 5/65:30 pm
IAD
- SEA
1 stop9h 05m
Southwest
Deal found 3/15![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 3/15. 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.
Wed 4/296:50 am
SEA
- DCA
2 stops11h 00m
Southwest
Wed 5/63:40 pm
DCA
- SEA
2 stops9h 50m
Southwest
Deal found 3/15![Southwest logo]()
$229
One-way flights from Washington to PennsylvaniaSearch for one-way flight options from Washington to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated March 19, 2026.
Search for one-way flight options from Washington to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated March 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Mon 4/2710:11 pm
SEA
- EWR
1 stop29h 51m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1111:37 am
SEA
- EWR
1 stop16h 25m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/1410:57 am
SEA
- EWR
2 stops16h 58m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Fri 4/247:12 pm
SEA
- LGA
2 stops47h 48m
Frontier
Deal found 3/16![Frontier logo]()
$124
This Trip.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:37 am
SEA
- EWR
1 stop15h 53m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Tue 4/147:12 pm
SEA
- IAD
2 stops26h 24m
Frontier
Deal found 3/15![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:50 pm
SEA
- LGA
2 stops23h 10m
Frontier
Deal found 3/17![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 4/1310:09 pm
SEA
- EWR
2 stops29h 46m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$127
This Delta deal was found by Cheapflights users on 3/17. 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.
Tue 4/287:35 pm
SEA
- EWR
1 stop7h 25m
Delta
Deal found 3/17![Delta logo]()
$129
This Delta deal was found by Cheapflights users on 3/16. 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.
Sat 5/165:30 am
SEA
- DCA
1 stop8h 57m
Delta
Deal found 3/16![Delta logo]()
$130
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” 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 5/1311:00 pm
SEA
- EWR
Nonstop5h 21m
United Airlines
Deal found 3/18![United Airlines logo]()
$130
This Delta deal was found by Cheapflights users on 3/16. 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.
Sat 5/165:30 am
SEA
- IAD
1 stop8h 01m
Delta
Deal found 3/16![Delta logo]()
$130
Find flight deals from Washington to Pennsylvania
Keep the following information in mind while searching for Washington to Pennsylvania flight deals. Data was last updated March 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $223 (Mytrip) |
One-way from | $113 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $430 |
Good round-trip deal | $302 or less |
Good one-way deal | $203 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Pennsylvania 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 March 19, 2026.
Use the filters below to find and compare flights from Washington to Pennsylvania that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleNewark
SEA - EWR
SEAEWR
Seattle/Tacoma Intl
Wed 7/1
3:23 pm-11:49 pm
Nonstop5h 26m
Newark
Tue 7/7
6:00 am-11:51 am
1 stop8h 51m
$289
SeattleNewark
SEA - EWR
SEAEWR
Seattle/Tacoma Intl
Sat 4/18
10:55 pm-7:16 am
Nonstop5h 21m
Newark
Sat 4/25
3:07 pm-8:53 pm
1 stop8h 46m
$289
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 4/23
7:00 am-7:23 pm
1 stop9h 23m
Washington, D.C. Dulles Intl
Fri 4/24
5:55 pm-8:53 pm
Nonstop5h 58m
$291
PortlandNewark
PDX - EWR
PDXEWR
Portland
Sat 4/25
11:15 pm-7:29 am
Nonstop5h 14m
Newark
Mon 4/27
6:52 pm-9:59 pm
Nonstop6h 07m
$292
SeattlePhiladelphia
SEA - PHL
SEAPHL
Seattle/Tacoma Intl
Fri 4/17
9:55 pm-6:05 am
Nonstop5h 10m
Philadelphia
Tue 4/21
7:25 am-10:30 am
Nonstop6h 05m
$297
SeattleNew York
SEA - JFK
SEAJFK
Seattle/Tacoma Intl
Sat 4/18
4:00 pm-12:20 am
Nonstop5h 20m
New York John F Kennedy Intl
Sat 4/25
7:00 pm-10:31 pm
Nonstop6h 31m
$297
SeattleNew York
SEA - LGA
SEALGA
Seattle/Tacoma Intl
Thu 4/30
5:15 am-3:50 pm
1 stop7h 35m
New York LaGuardia
Thu 4/30
5:50 pm-12:05 am
1 stop9h 15m
$297
SeattleNewark
SEA - EWR
SEAEWR
Seattle/Tacoma Intl
Thu 4/23
10:35 pm-9:10 am
1 stop7h 35m
Newark
Fri 4/24
4:55 pm-10:33 pm
1 stop8h 38m
$299
SeattleNew York
SEA - LGA
SEALGA
Seattle/Tacoma Intl
Sat 4/18
6:40 am-10:15 pm
2 stops12h 35m
New York LaGuardia
Sat 4/25
9:55 am-6:15 pm
2 stops11h 20m
$307
PortlandNew York
PDX - LGA
PDXLGA
Portland
Fri 4/24
11:59 pm-11:18 am
1 stop8h 19m
New York LaGuardia
Tue 4/28
1:10 pm-6:34 pm
1 stop8h 24m
$312
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Pennsylvania
Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Washington with our price prediction graph.
SEA-DCA
SEA-IAD
SEA-EWR
SEA-LGA
SEA-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 Pennsylvania
USWA-USPA
SEA-DCA
SEA-IAD
SEA-EWR
SEA-LGA
What is the cheapest month to book a flight from State of Washington to Pennsylvania?
Currently, September is the cheapest month in which you can book a flight from State of Washington to Pennsylvania (average of $42). Flying from State of Washington to Pennsylvania in July is currently the most expensive (average of $215). 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 PA?
Find hourly flight availability from Washington to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 19, 2026.
It’s typically best to fly out from State of Washington to Pennsylvania in the evening. Doing so could potentially save you 44% on the flight price compared to flying in the afternoon, which is usually more expensive.
Weekly flight availability from State of Washington to Pennsylvania
Explore weekly flight availability from Washington to Pennsylvania. 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 March 19, 2026.
The most flights from USWA to USPA are scheduled on a Tuesday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).
Reviews of airlines servicing Pennsylvania
Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated March 19, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, andDelta from Washington to Pennsylvania to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Washington to Pennsylvania. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Washington to Pennsylvania
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Complete your trip
Complete your trip to Pennsylvania by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington to Pennsylvania by cabin class
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Washington and Pennsylvania flights
Browse other Washington and Pennsylvania flight options. Last updated on March 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Pennsylvania
Find the right flight back to Washington after your stay in Pennsylvania
Washington to Pennsylvania flights
Consider these flights traveling from Washington to Pennsylvania.
Top 7 airlines flying from Washington to Pennsylvania
Discover the top 7 airlines that operate flights from Washington to Pennsylvania. 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 March 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$123 | Average$437 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$139 | Average$290 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$177 | Average$432 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$178 | Average$560 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$193 | Average$502 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$193 | Average$541 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$219 | Average$426 | FlexibilityNo cancel fee | On-time85% |