$147+ Cheap flights from Pennsylvania to Seattle (SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Pennsylvania to SeattleExplore the most affordable flight options available from Pennsylvania to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
Explore the most affordable flight options available from Pennsylvania to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/123:15 pm -
1 stop8h 41m
Mon 11/167:00 am -
1 stop6h 55m
Deal found 10/23![United Airlines logo]()
$293
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/142:07 pm -
2 stops10h 12m
Mon 11/167:00 am -
1 stop6h 55m
Deal found 10/22![United Airlines logo]()
$298
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:25 pm -
1 stop7h 10m
Sat 12/126:45 am -
2 stops8h 15m
Deal found 10/23![Southwest logo]()
$299
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/145:40 pm -
1 stop8h 10m
Sun 1/101:40 pm -
1 stop7h 25m
Deal found 10/22![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/174:43 pm -
1 stop7h 36m
Sat 11/212:30 pm -
1 stop6h 29m
Deal found 10/22![United Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 12/94:00 pm -
2 stops10h 35m
Sun 12/136:30 am -
2 stops9h 20m
Deal found 10/23![Southwest logo]()
$325
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/243:21 pm -
1 stop11h 38m
Wed 12/302:01 pm -
1 stop7h 21m
Deal found 10/22![American Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/172:07 pm -
2 stops10h 12m
Fri 11/277:00 am -
1 stop6h 55m
Deal found 10/22![United Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/196:01 pm -
1 stop8h 06m
Mon 11/235:05 am -
2 stops8h 50m
Deal found 10/23![United Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/101:25 pm -
1 stop13h 10m
Sun 12/135:30 am -
1 stop10h 15m
Deal found 10/21![Southwest logo]()
$379
This Mytrip deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Sat 12/126:31 pm -
2 stops28h 33m
Mon 12/148:56 pm -
2 stops23h 44m
Deal found 10/25![Frontier logo]()
$381
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/267:55 am -
1 stop8h 05m
Wed 12/27:40 am -
2 stops10h 45m
Deal found 10/25![Southwest logo]()
$382
Best flights from Pennsylvania to SeattleDiscover carefully curated flight deals from Pennsylvania to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from Pennsylvania to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:25 pm -
1 stop7h 10m
Sat 12/126:45 am -
2 stops8h 15m
Deal found 10/23![Southwest logo]()
$299
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/144:03 pm -
1 stop9h 40m
Wed 12/162:05 pm -
1 stop6h 46m
Deal found 10/26![United Airlines logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/28:00 am -
Nonstop5h 40m
Tue 12/81:01 pm -
Nonstop4h 29m
Deal found 10/24![Alaska Airlines logo]()
$377
This KAYAK deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/96:00 am -
1 stop8h 37m
Thu 11/1210:43 am -
1 stop7h 14m
Deal found 10/23![American Airlines logo]()
$400
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:00 am -
Nonstop6h 05m
Wed 12/28:30 am -
1 stop9h 58m
Deal found 10/25![Delta logo]()
$405
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 12/18:25 am -
1 stop7h 25m
Tue 12/86:30 am -
1 stop6h 35m
Deal found 10/23![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/93:39 pm -
1 stop9h 19m
Thu 12/109:01 am -
1 stop7h 56m
Deal found 10/24![United Airlines logo]()
$405
This Gotogate deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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.
Tue 11/103:45 pm -
1 stop21h 47m
Sat 11/141:03 pm -
1 stop26h 16m
Deal found 10/26![Multiple Airlines logo]()
$824
This Alaska Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/317:02 am -
Nonstop6h 27m
Sun 1/39:33 pm -
Nonstop5h 09m
Deal found 10/25![Alaska Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/156:00 am -
1 stop8h 10m
Sat 1/166:00 am -
1 stop7h 36m
Deal found 10/24![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 45m
Wed 12/166:10 am -
2 stops12h 20m
Deal found 10/23![Southwest logo]()
$415
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 1/2810:10 am -
1 stop8h 53m
Wed 2/310:52 am -
1 stop6h 59m
Deal found 10/22![United Airlines logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/258:00 am -
Nonstop5h 40m
Thu 12/3112:50 pm -
Nonstop4h 40m
Deal found 10/22![Alaska Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/185:15 am -
1 stop10h 26m
Tue 12/222:15 pm -
1 stop7h 49m
Deal found 10/22![Delta logo]()
$437
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/42:24 pm -
2 stops9h 57m
Sat 12/57:00 am -
2 stops14h 30m
Deal found 10/24![United Airlines logo]()
$425
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/108:01 am -
1 stop9h 19m
Sat 11/149:45 pm -
1 stop10h 31m
Deal found 10/26![American Airlines logo]()
$516
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/205:28 pm -
1 stop9h 31m
Mon 11/235:35 am -
1 stop7h 58m
Deal found 10/25![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/72:29 pm -
2 stops12h 02m
Wed 11/1111:15 pm -
2 stops11h 39m
Deal found 10/23![United Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/510:12 am -
1 stop10h 59m
Thu 11/1212:34 pm -
1 stop7h 07m
Deal found 10/26![American Airlines logo]()
$525
This Alaska Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/187:02 am -
Nonstop6h 27m
Fri 1/19:33 pm -
Nonstop5h 09m
Deal found 10/24![Alaska Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:03 pm -
1 stop8h 49m
Tue 11/1710:40 pm -
1 stop10h 24m
Deal found 10/25![Delta logo]()
$459
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/123:38 pm -
1 stop9h 12m
Tue 11/1710:56 pm -
2 stops10h 20m
Deal found 10/23![United Airlines logo]()
$428
This Southwest deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/234:50 pm -
2 stops11h 55m
Sun 12/278:30 pm -
2 stops10h 55m
Deal found 10/24![Southwest logo]()
$542
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/510:18 am -
2 stops13h 29m
Sun 12/137:30 pm -
2 stops11h 12m
Deal found 10/25![United Airlines logo]()
$428
This Alaska Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/187:02 am -
Nonstop6h 27m
Sat 1/29:33 pm -
Nonstop5h 09m
Deal found 10/24![Alaska Airlines logo]()
$522
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:30 am -
1 stop11h 00m
Sun 11/229:38 pm -
Nonstop5h 05m
Deal found 10/26![Delta logo]()
$477
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/272:29 pm -
1 stop7h 34m
Tue 12/12:05 pm -
1 stop7h 25m
Deal found 10/25![United Airlines logo]()
$432
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/146:30 am -
1 stop8h 49m
Wed 12/28:09 am -
1 stop7h 55m
Deal found 10/25![United Airlines logo]()
$439
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/186:39 am -
1 stop9h 02m
Sun 1/311:06 pm -
1 stop10h 08m
Deal found 10/24![Delta logo]()
$571
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 1/156:16 am -
1 stop8h 31m
Tue 1/197:00 am -
2 stops13h 14m
Deal found 10/23![United Airlines logo]()
$468
Last-minute flights from Pennsylvania to SeattleDiscover last-minute flight deals from Pennsylvania to Seattle. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Seattle. Data last updated October 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/123:15 pm -
1 stop8h 41m
Mon 11/167:00 am -
1 stop6h 55m
Deal found 10/23![United Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/127:55 pm -
1 stop7h 50m
Sun 11/155:30 am -
1 stop12h 50m
Deal found 10/22![Southwest logo]()
$320
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:50 pm -
1 stop10h 10m
Mon 11/166:30 am -
1 stop6h 35m
Deal found 10/23![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/142:07 pm -
2 stops10h 12m
Mon 11/167:00 am -
1 stop6h 55m
Deal found 10/22![United Airlines logo]()
$298
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/144:24 pm -
1 stop8h 35m
Sun 11/229:45 pm -
1 stop9h 35m
Deal found 10/22![American Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/174:43 pm -
1 stop7h 36m
Sat 11/212:30 pm -
1 stop6h 29m
Deal found 10/22![United Airlines logo]()
$321
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/178:05 am -
1 stop9h 15m
Fri 11/279:31 am -
1 stop8h 21m
Deal found 10/22![American Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/172:07 pm -
2 stops10h 12m
Fri 11/277:00 am -
1 stop6h 55m
Deal found 10/22![United Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/196:01 pm -
1 stop8h 06m
Mon 11/235:05 am -
2 stops8h 50m
Deal found 10/23![United Airlines logo]()
$348
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/243:10 pm -
1 stop13h 10m
Mon 11/3012:15 am -
1 stop7h 25m
Deal found 10/22![Southwest logo]()
$351
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/257:40 pm -
1 stop8h 40m
Wed 12/26:10 am -
1 stop6h 35m
Deal found 10/26![Southwest logo]()
$349
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/267:55 am -
2 stops12h 45m
Wed 12/26:30 am -
1 stop7h 00m
Deal found 10/25![Southwest logo]()
$382
One-way flights from Pennsylvania to SeattleSearch for one-way flight options from Pennsylvania to Seattle. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
Search for one-way flight options from Pennsylvania to Seattle. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/1012:58 pm -
1 stop11h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$147
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/143:45 pm -
2 stops10h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Southwest logo]()
$152
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/104:00 pm -
2 stops10h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Southwest logo]()
$153
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/228:00 pm -
1 stop7h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Southwest logo]()
$169
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/96:25 pm -
2 stops9h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Southwest logo]()
$174
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/54:45 pm -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/147:59 pm -
3 stops46h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$179
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/232:07 pm -
2 stops10h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$192
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/203:38 pm -
1 stop9h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$195
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/26:00 am -
1 stop11h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$210
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/510:18 am -
2 stops14h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![United Airlines logo]()
$215
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 1/65:30 am -
1 stop9h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Delta logo]()
$220
Find flight deals from Pennsylvania to Seattle
Keep the following information in mind while searching for Pennsylvania to Seattle flight deals. Data was last updated October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $293 (United Airlines) |
One-way from | $147 (United Airlines) |
Popular in | August |
Cheapest in | January |
Average price | $420 |
Good round-trip deal | $423 or less |
Good one-way deal | $251 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania to Seattle 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 October 27, 2026.
Use the filters below to find and compare flights from Pennsylvania to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PittsburghSeattle
PIT Pittsburgh - SEA Seattle/Tacoma Intl
PITSEA
Pittsburgh
Mon 12/14
7:25 pm-11:35 pm
1 stop7h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$147
PittsburghSeattle
PIT Pittsburgh - SEA Seattle/Tacoma Intl
PITSEA
Pittsburgh
Thu 12/10
4:00 pm-11:35 pm
2 stops10h 35m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$153
PittsburghSeattle
PIT Pittsburgh - SEA Seattle/Tacoma Intl
PITSEA
Pittsburgh
Mon 11/9
6:25 pm-1:20 am
2 stops9h 55m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$174
PittsburghSeattle
PIT Pittsburgh - SEA Seattle/Tacoma Intl
PITSEA
Pittsburgh
Mon 11/23
2:07 pm-9:19 pm
2 stops10h 12m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$192
PittsburghSeattle
PIT Pittsburgh - SEA Seattle/Tacoma Intl
PITSEA
Pittsburgh
Sat 1/9
8:15 am-4:38 pm
2 stops11h 23m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$204
ScrantonSeattle
AVP Wilkes-Barre Scranton - SEA Seattle/Tacoma Intl
AVPSEA
Wilkes-Barre Scranton
Sat 12/5
2:40 pm-10:48 pm
1 stop11h 08m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$210
ScrantonSeattle
AVP Wilkes-Barre Scranton - SEA Seattle/Tacoma Intl
AVPSEA
Wilkes-Barre Scranton
Wed 1/13
2:50 pm-9:02 pm
1 stop9h 12m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$210
PittsburghSeattle
PIT Pittsburgh - SEA Seattle/Tacoma Intl
PITSEA
Pittsburgh
Fri 1/8
3:15 pm-9:02 pm
1 stop8h 47m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$212
PittsburghSeattle
PIT Pittsburgh - SEA Seattle/Tacoma Intl
PITSEA
Pittsburgh
Wed 11/25
2:00 pm-11:10 pm
2 stops12h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$214
ScrantonSeattle
AVP Wilkes-Barre Scranton - SEA Seattle/Tacoma Intl
AVPSEA
Wilkes-Barre Scranton
Sat 12/5
10:18 am-9:21 pm
2 stops14h 03m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$215
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Pennsylvania to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Pennsylvania with our price prediction graph.
PIT-SEA
PHL-SEA
BFD-SEA
ABE-SEA
JST-SEA
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 Pennsylvania to Seattle
USPA-SEA
PIT-SEA
PHL-SEA
BFD-SEA
ABE-SEA
What is the cheapest month to book a flight from Pennsylvania to Seattle?
Currently, January is the cheapest month in which you can book a flight from Pennsylvania to Seattle (average of $317). Flying from Pennsylvania to Seattle in July is currently the most expensive (average of $480). 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 PA to SEA?
Find hourly flight availability from Pennsylvania to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to Seattle as you normally would.
Weekly flight availability from Pennsylvania to Seattle
Explore weekly flight availability from Pennsylvania to Seattle. 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 October 27, 2026.
The most flights from USPA to SEA are scheduled on a Sunday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Pennsylvania to Seattle?
Airfare is typical for this route at the moment.
Pennsylvania to Seattle flights typically cost between $381 and $558 in December.The cheapest round-trip price found within the last 5 days was $381 on Frontier (Dec 12-Dec 14).
How far ahead should I book a flight from Pennsylvania to Seattle?
To ensure you get the cheapest price possible for a flight from Pennsylvania to Seattle, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Related info for your journey
Find useful and relevant information for your journey from Pennsylvania to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Tukwila
Snoqualmie
Puyallup
Lynnwood
Olympia
Centralia
Kent
Tumwater
Ocean Shores
Ellensburg
Issaquah
Lakewood
Poulsbo
Marysville
Shoreline
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.
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Alternative routes for Pennsylvania to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Pennsylvania to Seattle by cabin class
Find flights from Pennsylvania to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Pennsylvania and Seattle flights
Browse other Pennsylvania and Seattle flight options. Last updated on October 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 27, 2026.
Pennsylvania to Seattle flights
Consider these flights traveling from Pennsylvania to Seattle.
Top 6 airlines flying from Pennsylvania to Seattle
Discover the top 6 airlines that operate flights from Pennsylvania to Seattle. 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 October 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$157 | Average$269 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$159 | Average$369 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$163 | Average$429 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$178 | Average$522 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$197 | Average$533 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$236 | Average$445 | FlexibilityNo cancel fee | On-time69% |