$147+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Jul 18 — Jul 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 June 18, 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 June 18, 2026.
This Expedia deal was found by Cheapflights users on 6/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:35 pm
SEA
- IAD
Nonstop5h 05m
Alaska Airlines
Sun 8/307:00 am
IAD
- SEA
Nonstop5h 37m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$281
This CheapOair deal was found by Cheapflights users on 6/17. 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.
Tue 8/259:35 pm
SEA
- IAD
Nonstop5h 05m
Alaska Airlines
Tue 9/17:00 am
IAD
- SEA
Nonstop5h 37m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$284
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 8/206:15 pm
SEA
- IAD
1 stop8h 10m
United Airlines
Mon 8/245:33 pm
IAD
- SEA
Nonstop5h 45m
United Airlines
Deal found 6/17![United Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:04 pm
SEA
- IAD
Nonstop5h 03m
United Airlines
Sun 8/3012:45 pm
IAD
- SEA
Nonstop5h 46m
United Airlines
Deal found 6/16![United Airlines logo]()
$291
This United Airlines deal was found by Cheapflights users on 6/17. 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 8/1211:04 pm
SEA
- IAD
Nonstop5h 03m
United Airlines
Wed 8/195:33 pm
IAD
- SEA
Nonstop5h 45m
United Airlines
Deal found 6/17![United Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:10 am
SEA
- DCA
1 stop8h 03m
American Airlines
Tue 7/215:50 pm
DCA
- SEA
1 stop8h 10m
American Airlines
Deal found 6/16![American Airlines logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 6/14. 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.
Mon 9/149:35 pm
SEA
- IAD
Nonstop5h 05m
Alaska Airlines
Sun 9/207:00 am
IAD
- SEA
Nonstop5h 37m
Alaska Airlines
Deal found 6/14![Alaska Airlines logo]()
$295
This Flybillet deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flybillet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/64:01 pm
SEA
- IAD
Nonstop4h 58m
Alaska Airlines
Sat 8/156:14 pm
IAD
- SEA
Nonstop5h 55m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$296
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:00 pm
SEA
- IAD
1 stop7h 23m
United Airlines
Tue 8/2512:50 pm
IAD
- SEA
1 stop7h 52m
United Airlines
Deal found 6/15![United Airlines logo]()
$297
This Expedia deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:13 pm
SEA
- IAD
1 stop9h 07m
Frontier
Wed 7/299:50 am
IAD
- SEA
1 stop27h 49m
Frontier
Deal found 6/15![Frontier logo]()
$298
This Gotogate deal was found by Cheapflights users on 6/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:06 pm
SEA
- DCA
1 stop18h 53m
Frontier
Wed 8/127:00 am
DCA
- SEA
1 stop9h 17m
Frontier
Deal found 6/17![Frontier logo]()
$299
This Booking.com deal was found by Cheapflights users on 6/17. 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.
Fri 7/107:06 pm
SEA
- DCA
1 stop14h 45m
Frontier
Tue 7/147:00 am
DCA
- SEA
1 stop29h 17m
Frontier
Deal found 6/17![Frontier logo]()
$300
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 June 18, 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 June 18, 2026.
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:58 pm
SEA
- IAD
Nonstop5h 01m
Delta
Thu 8/277:10 am
IAD
- SEA
Nonstop5h 45m
Delta
Deal found 6/16![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:04 pm
SEA
- IAD
Nonstop5h 03m
United Airlines
Sat 8/225:33 pm
IAD
- SEA
Nonstop5h 45m
United Airlines
Deal found 6/15![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 6/16. 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.
Wed 8/196:40 am
SEA
- DCA
2 stops9h 30m
Southwest
Tue 8/256:40 pm
DCA
- SEA
1 stop7h 55m
Southwest
Deal found 6/16![Southwest logo]()
$320
This JetBlue deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:27 pm
PDX
- JFK
1 stop7h 32m
JetBlue
Sun 7/126:00 am
JFK
- PDX
1 stop10h 03m
JetBlue
Deal found 6/13![JetBlue logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:50 pm
PDX
- EWR
Nonstop5h 35m
Alaska Airlines
Fri 10/166:30 am
EWR
- PDX
Nonstop6h 02m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:20 am
SEA
- DCA
Nonstop5h 01m
Delta
Sun 9/64:35 pm
DCA
- SEA
Nonstop6h 06m
Delta
Deal found 6/17![Delta logo]()
$305
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Fri 8/212:34 pm
SEA
- IAD
1 stop6h 58m
United Airlines
Mon 8/245:15 pm
IAD
- SEA
1 stop8h 28m
United Airlines
Deal found 6/17![United Airlines logo]()
$308
This Southwest deal was found by Cheapflights users on 6/16. 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 8/611:05 pm
SEA
- DCA
1 stop6h 25m
Southwest
Sat 8/156:05 am
DCA
- SEA
2 stops16h 25m
Southwest
Deal found 6/16![Southwest logo]()
$326
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:25 am
PDX
- EWR
1 stop7h 55m
United Airlines
Tue 10/276:00 am
EWR
- PDX
Nonstop6h 21m
United Airlines
Deal found 6/15![United Airlines logo]()
$309
This JetBlue deal was found by Cheapflights users on 6/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:27 pm
PDX
- JFK
1 stop7h 34m
JetBlue
Thu 8/203:50 pm
JFK
- PDX
1 stop9h 42m
JetBlue
Deal found 6/15![JetBlue logo]()
$343
This Alaska Airlines deal was found by Cheapflights users on 6/15. 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 8/197:40 am
SEA
- DCA
1 stop10h 20m
Alaska Airlines
Tue 8/258:00 am
DCA
- SEA
Nonstop5h 54m
Alaska Airlines
Deal found 6/15![Alaska Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:45 pm
SEA
- EWR
1 stop9h 19m
Delta
Mon 12/143:00 pm
EWR
- SEA
1 stop8h 27m
Delta
Deal found 6/15![Delta logo]()
$329
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:02 pm
PDX
- EWR
1 stop7h 05m
United Airlines
Sun 8/307:03 pm
EWR
- PDX
Nonstop6h 00m
United Airlines
Deal found 6/15![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 6/14. 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 9/35:00 am
SEA
- DCA
2 stops9h 50m
Southwest
Mon 9/76:55 am
DCA
- SEA
1 stop10h 00m
Southwest
Deal found 6/14![Southwest logo]()
$340
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:44 pm
SEA
- DCA
1 stop9h 16m
JetBlue
Wed 8/262:00 pm
DCA
- SEA
1 stop11h 49m
JetBlue
Deal found 6/16![JetBlue logo]()
$345
This Alaska Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/309:31 pm
PDX
- EWR
Nonstop5h 28m
Alaska Airlines
Tue 9/229:00 am
EWR
- PDX
1 stop10h 50m
Alaska Airlines
Deal found 6/13![Alaska Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 6/16. 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.
Fri 11/1311:05 pm
SEA
- EWR
1 stop6h 57m
Delta
Tue 11/175:00 pm
EWR
- SEA
1 stop8h 05m
Delta
Deal found 6/16![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 6/17. 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 9/305:20 am
SEA
- LGA
1 stop9h 25m
Southwest
Tue 10/61:15 pm
LGA
- SEA
2 stops12h 05m
Southwest
Deal found 6/17![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:02 pm
PDX
- EWR
1 stop7h 01m
United Airlines
Wed 9/164:59 pm
EWR
- PDX
1 stop8h 54m
United Airlines
Deal found 6/15![United Airlines logo]()
$314
This JetBlue deal was found by Cheapflights users on 6/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:44 pm
SEA
- DCA
1 stop11h 46m
JetBlue
Tue 8/182:00 pm
DCA
- SEA
1 stop11h 49m
JetBlue
Deal found 6/17![JetBlue logo]()
$351
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:33 am
PDX
- EWR
Nonstop5h 29m
Alaska Airlines
Fri 9/185:02 pm
EWR
- PDX
1 stop19h 28m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 6/16. 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.
Mon 10/197:14 pm
PDX
- EWR
1 stop7h 50m
Delta
Tue 10/276:00 am
EWR
- PDX
1 stop10h 25m
Delta
Deal found 6/16![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/235:30 am
SEA
- DCA
2 stops13h 25m
Southwest
Mon 7/277:05 pm
DCA
- SEA
1 stop8h 30m
Southwest
Deal found 6/13![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 8/2711:00 pm
SEA
- LGA
1 stop7h 13m
United Airlines
Wed 9/24:25 pm
LGA
- SEA
1 stop9h 18m
United Airlines
Deal found 6/17![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 6/14. 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 9/2610:40 pm
SEA
- JFK
Nonstop5h 13m
Delta
Sat 10/37:30 pm
JFK
- SEA
Nonstop6h 40m
Delta
Deal found 6/14![Delta logo]()
$337
This JetBlue deal was found by Cheapflights users on 6/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:44 pm
PDX
- JFK
1 stop11h 16m
JetBlue
Mon 8/31:20 pm
JFK
- PDX
1 stop12h 11m
JetBlue
Deal found 6/17![JetBlue logo]()
$373
This Alaska Airlines deal was found by Cheapflights users on 6/16. 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.
Mon 8/247:50 pm
SEA
- IAD
1 stop19h 24m
Alaska Airlines
Sat 8/297:35 pm
IAD
- SEA
1 stop16h 45m
Alaska Airlines
Deal found 6/16![Alaska Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 6/17. 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 9/167:10 am
SEA
- LGA
2 stops12h 20m
Southwest
Tue 9/229:45 am
LGA
- SEA
2 stops11h 25m
Southwest
Deal found 6/17![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:00 pm
SEA
- LGA
1 stop7h 13m
United Airlines
Sun 8/304:59 pm
LGA
- SEA
1 stop9h 05m
United Airlines
Deal found 6/15![United Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:55 pm
SEA
- JFK
Nonstop5h 19m
Delta
Wed 9/237:30 pm
JFK
- SEA
Nonstop6h 40m
Delta
Deal found 6/13![Delta logo]()
$337
Last-minute flights from Washington to PennsylvaniaDiscover last-minute flight deals from Washington to Pennsylvania. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Pennsylvania. Data last updated June 18, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:13 pm
SEA
- IAD
1 stop9h 07m
Frontier
Tue 7/149:50 am
IAD
- SEA
1 stop27h 49m
Frontier
Deal found 6/14![Frontier logo]()
$297
This Jetabroad deal was found by Cheapflights users on 6/17. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:44 pm
SEA
- DCA
1 stop9h 17m
JetBlue
Wed 7/154:00 pm
DCA
- SEA
1 stop9h 54m
JetBlue
Deal found 6/17![JetBlue logo]()
$306
This CheapOair deal was found by Cheapflights users on 6/17. 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.
Wed 7/87:06 pm
SEA
- DCA
1 stop18h 53m
Frontier
Tue 7/146:00 pm
DCA
- SEA
1 stop20h 20m
Frontier
Deal found 6/17![Frontier logo]()
$308
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:30 pm
PDX
- EWR
1 stop7h 25m
United Airlines
Sat 7/186:43 pm
EWR
- PDX
Nonstop6h 03m
United Airlines
Deal found 6/15![United Airlines logo]()
$309
This Booking.com deal was found by Cheapflights users on 6/17. 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.
Fri 7/107:06 pm
SEA
- DCA
1 stop14h 45m
Frontier
Tue 7/147:00 am
DCA
- SEA
1 stop29h 17m
Frontier
Deal found 6/17![Frontier logo]()
$300
This Booking.com deal was found by Cheapflights users on 6/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:06 pm
SEA
- DCA
1 stop14h 45m
Frontier
Mon 7/137:00 am
DCA
- SEA
1 stop29h 17m
Frontier
Deal found 6/16![Frontier logo]()
$309
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:10 am
SEA
- DCA
1 stop8h 03m
American Airlines
Tue 7/215:50 pm
DCA
- SEA
1 stop8h 10m
American Airlines
Deal found 6/16![American Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 6/16. 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.
Tue 7/1411:05 pm
SEA
- DCA
1 stop6h 20m
Southwest
Tue 7/216:55 pm
DCA
- SEA
1 stop8h 30m
Southwest
Deal found 6/16![Southwest logo]()
$305
This Expedia deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:13 pm
SEA
- IAD
1 stop9h 07m
Frontier
Wed 7/299:50 am
IAD
- SEA
1 stop27h 49m
Frontier
Deal found 6/15![Frontier logo]()
$298
This CheapOair deal was found by Cheapflights users on 6/15. 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.
Thu 7/168:53 pm
SEA
- IAD
1 stop8h 27m
Frontier
Tue 7/219:50 am
IAD
- SEA
1 stop27h 49m
Frontier
Deal found 6/15![Frontier logo]()
$308
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2911:20 pm
SEA
- IAD
Nonstop5h 02m
United Airlines
Mon 8/105:55 pm
IAD
- SEA
Nonstop5h 51m
United Airlines
Deal found 6/16![United Airlines logo]()
$295
This Gotogate deal was found by Cheapflights users on 6/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:06 pm
SEA
- DCA
1 stop23h 53m
Frontier
Thu 8/66:00 pm
DCA
- SEA
1 stop18h 04m
Frontier
Deal found 6/16![Frontier logo]()
$307
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 June 18, 2026.
Search for one-way flight options from Washington to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This Jetabroad deal was found by Cheapflights users on 6/16. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:55 pm
SEA
- DCA
1 stop9h 20m
JetBlue
Deal found 6/16![JetBlue logo]()
$147
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 9/108:10 am
SEA
- IAD
Nonstop5h 06m
United Airlines
Deal found 6/17![United Airlines logo]()
$148
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Sat 8/110:52 pm
PDX
- EWR
Nonstop5h 14m
United Airlines
Deal found 6/17![United Airlines logo]()
$150
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1611:55 pm
SEA
- DCA
1 stop11h 55m
JetBlue
Deal found 6/16![JetBlue logo]()
$152
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:05 pm
SEA
- IAD
Nonstop5h 03m
Delta
Deal found 6/16![Delta logo]()
$153
This Cheapflightsfares deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:40 pm
SEA
- JFK
Nonstop5h 23m
JetBlue
Deal found 6/13![JetBlue logo]()
$154
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Thu 7/910:52 pm
PDX
- EWR
Nonstop5h 14m
United Airlines
Deal found 6/18![United Airlines logo]()
$154
This American Airlines deal was found by Cheapflights users on 6/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:10 am
SEA
- DCA
1 stop8h 03m
American Airlines
Deal found 6/17![American Airlines logo]()
$158
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:00 am
SEA
- IAD
1 stop9h 48m
American Airlines
Deal found 6/16![American Airlines logo]()
$158
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:10 am
SEA
- EWR
1 stop10h 20m
American Airlines
Deal found 6/15![American Airlines logo]()
$159
This JetBlue deal was found by Cheapflights users on 6/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:19 pm
SEA
- JFK
Nonstop5h 20m
JetBlue
Deal found 6/14![JetBlue logo]()
$159
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:25 am
SEA
- IAD
1 stop7h 39m
American Airlines
Deal found 6/15![American Airlines logo]()
$159
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 June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $281 (Expedia) |
One-way from | $147 (Jetabroad) |
Popular in | December |
Cheapest in | October |
Average price | $459 |
Good round-trip deal | $383 or less |
Good one-way deal | $215 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 June 18, 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
Quickest round-trip
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Wed 8/26
3:58 pm-11:59 pm
Nonstop5h 01m
Washington, D.C. Dulles Intl
Thu 8/27
7:10 am-9:55 am
Nonstop5h 45m
$295
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Thu 8/13
11:04 pm-7:07 am
Nonstop5h 03m
Washington, D.C. Dulles Intl
Sat 8/22
5:33 pm-8:18 pm
Nonstop5h 45m
$295
SeattleWashington, D.C.
SEA - DCA
SEADCA
Seattle/Tacoma Intl
Thu 9/3
7:20 am-3:21 pm
Nonstop5h 01m
Washington, D.C. Reagan-National
Sun 9/6
4:35 pm-7:41 pm
Nonstop6h 06m
$305
SeattleWashington, D.C.
SEA - IAD
SEAIAD
Seattle/Tacoma Intl
Fri 8/21
2:34 pm-12:32 am
1 stop6h 58m
Washington, D.C. Dulles Intl
Mon 8/24
5:15 pm-10:43 pm
1 stop8h 28m
$308
PortlandNewark
PDX - EWR
PDXEWR
Portland
Thu 10/22
8:25 am-7:20 pm
1 stop7h 55m
Newark
Tue 10/27
6:00 am-9:21 am
Nonstop6h 21m
$309
PortlandNewark
PDX - EWR
PDXEWR
Portland
Fri 8/28
11:02 pm-9:07 am
1 stop7h 05m
Newark
Sun 8/30
7:03 pm-10:03 pm
Nonstop6h 00m
$309
PortlandNewark
PDX - EWR
PDXEWR
Portland
Wed 9/9
11:02 pm-9:03 am
1 stop7h 01m
Newark
Wed 9/16
4:59 pm-10:53 pm
1 stop8h 54m
$314
SeattleNew York
SEA - LGA
SEALGA
Seattle/Tacoma Intl
Thu 8/27
11:00 pm-9:13 am
1 stop7h 13m
New York LaGuardia
Wed 9/2
4:25 pm-10:43 pm
1 stop9h 18m
$319
SeattleWashington, D.C.
SEA - DCA
SEADCA
Seattle/Tacoma Intl
Wed 8/19
6:40 am-7:10 pm
2 stops9h 30m
Washington, D.C. Reagan-National
Tue 8/25
6:40 pm-11:35 pm
1 stop7h 55m
$320
SeattleWashington, D.C.
SEA - DCA
SEADCA
Seattle/Tacoma Intl
Thu 8/6
11:05 pm-8:30 am
1 stop6h 25m
Washington, D.C. Reagan-National
Sat 8/15
6:05 am-7:30 pm
2 stops16h 25m
$326
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
PDX-EWR
PDX-JFK
SEA-EWR
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
PDX-EWR
PDX-JFK
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 June is currently the most expensive (average of $1,169). 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 June 18, 2026.
It’s typically best to fly out from State of Washington to Pennsylvania in the evening. Doing so could potentially save you 40% 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 June 18, 2026.
The most flights from USWA to USPA are scheduled on a Wednesday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from State of Washington to Pennsylvania?
How far ahead should I book a flight from State of Washington to Pennsylvania?
The price you pay for your flight from State of Washington to Pennsylvania may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 June 18, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, 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.
Overall
7.9
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Crew
8.5
Food
7.0
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
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
See prices for flight routes from nearby airports that may be better suited for you.
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
Find flights from Washington to Pennsylvania, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Pennsylvania flights
Browse other Washington and Pennsylvania flight options. Last updated on June 18, 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 June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$465 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$139 | Average$519 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$149 | Average$294 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$424 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$178 | Average$460 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$178 | Average$451 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$206 | Average$500 | FlexibilityNo cancel fee | On-time69% |