$134+ Cheap flights from Seattle (SEA) to Pennsylvania
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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Cheapest flights from Seattle to PennsylvaniaExplore the most affordable flight options available from Seattle to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Seattle to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:15 am -
1 stop9h 23m
Thu 10/151:02 pm -
1 stop10h 13m
Deal found 9/4![American Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:30 am -
2 stops9h 20m
Mon 11/97:45 pm -
1 stop8h 30m
Deal found 9/6![Southwest logo]()
$272
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:20 am -
2 stops9h 30m
Tue 9/296:55 pm -
1 stop7h 45m
Deal found 9/7![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:13 pm -
1 stop6h 25m
Fri 10/165:33 pm -
1 stop8h 53m
Deal found 9/5![United Airlines logo]()
$287
This Gotogate deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:49 pm -
Nonstop5h 10m
Sat 10/317:00 am -
1 stop11h 12m
Deal found 9/8![Multiple Airlines logo]()
$296
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:02 pm -
1 stop7h 57m
Mon 9/212:43 pm -
1 stop11h 14m
Deal found 9/5![American Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:40 am -
2 stops9h 50m
Wed 11/112:20 pm -
1 stop12h 10m
Deal found 9/7![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:05 pm -
2 stops10h 15m
Fri 10/27:50 pm -
1 stop8h 45m
Deal found 9/5![Southwest logo]()
$302
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:05 pm -
1 stop9h 15m
Thu 9/242:45 pm -
1 stop12h 10m
Deal found 9/8![Southwest logo]()
$303
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:14 pm -
Nonstop5h 03m
Sat 10/105:45 pm -
Nonstop5h 52m
Deal found 9/6![United Airlines logo]()
$306
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:20 am -
Nonstop5h 03m
Mon 10/195:05 pm -
1 stop8h 59m
Deal found 9/4![Delta logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:36 pm -
Nonstop5h 04m
Wed 10/77:02 am -
Nonstop5h 42m
Deal found 9/6![Alaska Airlines logo]()
$307
Best flights from Seattle to PennsylvaniaDiscover carefully curated flight deals from Seattle to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Seattle to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:20 am -
1 stop6h 40m
Tue 12/155:35 am -
2 stops10h 15m
Deal found 9/7![Southwest logo]()
$272
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:59 pm -
1 stop8h 32m
Fri 10/304:45 pm -
Nonstop5h 50m
Deal found 9/5![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:13 pm -
1 stop6h 41m
Tue 10/201:00 pm -
1 stop8h 19m
Deal found 9/4![United Airlines logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:40 pm -
Nonstop5h 19m
Fri 10/237:03 am -
Nonstop6h 12m
Deal found 9/8![Alaska Airlines logo]()
$317
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:43 am -
1 stop9h 16m
Wed 11/116:15 pm -
1 stop9h 20m
Deal found 9/4![American Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:56 pm -
1 stop8h 01m
Mon 10/265:50 pm -
Nonstop6h 06m
Deal found 9/5![United Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:40 am -
2 stops9h 50m
Tue 12/12:20 pm -
1 stop12h 10m
Deal found 9/5![Southwest logo]()
$336
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/133:56 pm -
Nonstop5h 03m
Tue 10/207:24 pm -
1 stop21h 53m
Deal found 9/4![Alaska Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/173:55 pm -
Nonstop4h 56m
Sun 2/217:05 am -
Nonstop6h 00m
Deal found 9/7![Delta logo]()
$367
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:10 am -
2 stops8h 50m
Tue 12/84:00 pm -
2 stops9h 30m
Deal found 9/4![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:14 pm -
Nonstop5h 03m
Tue 10/205:45 pm -
Nonstop5h 52m
Deal found 9/5![United Airlines logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:28 am -
Nonstop5h 31m
Thu 10/299:30 am -
1 stop9h 34m
Deal found 9/5![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:59 pm -
Nonstop5h 12m
Tue 10/207:29 pm -
Nonstop6h 35m
Deal found 9/8![Delta logo]()
$377
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:35 am -
2 stops10h 15m
Mon 10/197:20 pm -
1 stop8h 40m
Deal found 9/4![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/175:34 pm -
1 stop9h 55m
Mon 1/115:35 pm -
Nonstop5h 35m
Deal found 9/7![United Airlines logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:15 am -
Nonstop5h 15m
Mon 11/95:17 pm -
Nonstop5h 56m
Deal found 9/8![Alaska Airlines logo]()
$373
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:31 am -
1 stop9h 43m
Wed 10/76:40 pm -
1 stop8h 56m
Deal found 9/5![American Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1411:05 pm -
1 stop6h 57m
Tue 1/265:00 pm -
1 stop8h 05m
Deal found 9/6![Delta logo]()
$387
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2111:50 pm -
1 stop8h 53m
Sat 3/63:45 pm -
1 stop9h 11m
Deal found 9/6![United Airlines logo]()
$362
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:35 pm -
1 stop7h 35m
Sun 11/225:50 pm -
1 stop9h 50m
Deal found 9/4![Southwest logo]()
$372
This Alaska Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:58 am -
Nonstop5h 31m
Wed 10/287:03 am -
Nonstop6h 12m
Deal found 9/5![Alaska Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:59 pm -
1 stop7h 20m
Wed 10/77:05 am -
Nonstop5h 51m
Deal found 9/6![Delta logo]()
$387
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2110:47 am -
1 stop10h 05m
Tue 1/57:10 am -
1 stop8h 56m
Deal found 9/5![American Airlines logo]()
$475
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:05 pm -
1 stop8h 12m
Wed 10/712:38 pm -
1 stop8h 41m
Deal found 9/5![United Airlines logo]()
$368
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:41 pm -
Nonstop5h 18m
Mon 11/97:00 am -
Nonstop6h 16m
Deal found 9/4![Alaska Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2312:15 am -
1 stop7h 10m
Tue 12/16:20 pm -
1 stop8h 10m
Deal found 9/8![Southwest logo]()
$378
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:20 am -
Nonstop5h 03m
Mon 10/266:59 pm -
1 stop8h 00m
Deal found 9/4![Delta logo]()
$392
This Alaska Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:29 pm -
Nonstop5h 12m
Mon 10/196:41 pm -
Nonstop6h 00m
Deal found 9/8![Alaska Airlines logo]()
$379
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:35 am -
2 stops10h 15m
Sat 10/176:30 am -
2 stops11h 00m
Deal found 9/5![Southwest logo]()
$381
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 am -
2 stops10h 25m
Thu 10/1511:01 am -
2 stops12h 36m
Deal found 9/4![United Airlines logo]()
$387
Last-minute flights from Seattle to PennsylvaniaDiscover last-minute flight deals from Seattle to Pennsylvania. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Pennsylvania. Data last updated September 9, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:02 pm -
1 stop7h 57m
Mon 9/212:43 pm -
1 stop11h 14m
Deal found 9/5![American Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:05 pm -
1 stop9h 15m
Thu 9/242:45 pm -
1 stop12h 10m
Deal found 9/8![Southwest logo]()
$303
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:20 am -
2 stops9h 30m
Tue 9/296:55 pm -
1 stop7h 45m
Deal found 9/7![Southwest logo]()
$282
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:20 am -
1 stop6h 50m
Tue 9/296:40 am -
2 stops9h 40m
Deal found 9/4![Southwest logo]()
$272
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:05 pm -
2 stops10h 15m
Fri 10/27:50 pm -
1 stop8h 45m
Deal found 9/5![Southwest logo]()
$302
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:13 pm -
1 stop6h 25m
Fri 10/165:33 pm -
1 stop8h 53m
Deal found 9/5![United Airlines logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:36 pm -
Nonstop5h 04m
Wed 10/77:02 am -
Nonstop5h 42m
Deal found 9/6![Alaska Airlines logo]()
$307
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:15 am -
1 stop9h 23m
Thu 10/151:02 pm -
1 stop10h 13m
Deal found 9/4![American Airlines logo]()
$267
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:14 pm -
Nonstop5h 03m
Sat 10/105:45 pm -
Nonstop5h 52m
Deal found 9/6![United Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:05 pm -
1 stop7h 45m
Mon 10/197:20 pm -
1 stop8h 40m
Deal found 9/8![Southwest logo]()
$307
This Gotogate deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:49 pm -
Nonstop5h 10m
Sat 10/317:00 am -
1 stop11h 12m
Deal found 9/8![Multiple Airlines logo]()
$296
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:20 am -
Nonstop5h 03m
Mon 10/195:05 pm -
1 stop8h 59m
Deal found 9/4![Delta logo]()
$307
One-way flights from Seattle to PennsylvaniaSearch for one-way flight options from Seattle to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from Seattle to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Southwest deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:05 pm -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Southwest logo]()
$134
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:30 am -
2 stops9h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$139
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:00 am -
1 stop6h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$144
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:05 am -
2 stops10h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:27 pm -
2 stops27h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$154
This Southwest deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1511:05 pm -
1 stop9h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Southwest logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/412:14 pm -
2 stops26h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:14 pm -
2 stops27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$166
This Super.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:27 pm -
1 stop29h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$167
This Southwest deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:20 am -
2 stops9h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:57 am -
2 stops41h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/412:14 pm -
2 stops40h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$172
Find flight deals from Seattle to Pennsylvania
Keep the following information in mind while searching for Seattle to Pennsylvania flight deals. Data was last updated September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $267 (American Airlines) |
One-way from | $134 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $423 |
Good round-trip deal | $386 or less |
Good one-way deal | $278 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle 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 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from Seattle to Pennsylvania that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattlePittsburgh
SEA Seattle/Tacoma Intl - PIT Pittsburgh
SEAPIT
Seattle/Tacoma Intl
Thu 3/4
11:50 pm-9:33 am
1 stop6h 43m
Pittsburgh
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$144
SeattlePittsburgh
SEA Seattle/Tacoma Intl - PIT Pittsburgh
SEAPIT
Seattle/Tacoma Intl
Thu 11/26
11:10 pm-2:14 pm
2 stops12h 04m
Pittsburgh
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$164
SeattlePhiladelphia
SEA Seattle/Tacoma Intl - PHL Philadelphia
SEAPHL
Seattle/Tacoma Intl
Mon 12/14
6:30 am-4:30 pm
1 stop7h 00m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$179
SeattlePhiladelphia
SEA Seattle/Tacoma Intl - PHL Philadelphia
SEAPHL
Seattle/Tacoma Intl
Wed 10/7
7:00 am-7:42 pm
1 stop9h 42m
Philadelphia
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$179
SeattlePittsburgh
SEA Seattle/Tacoma Intl - PIT Pittsburgh
SEAPIT
Seattle/Tacoma Intl
Fri 12/4
2:19 pm-11:51 pm
1 stop6h 32m
Pittsburgh
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$189
SeattlePittsburgh
SEA Seattle/Tacoma Intl - PIT Pittsburgh
SEAPIT
Seattle/Tacoma Intl
Sat 3/6
10:40 pm-9:33 am
1 stop7h 53m
Pittsburgh
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$189
SeattlePittsburgh
SEA Seattle/Tacoma Intl - PIT Pittsburgh
SEAPIT
Seattle/Tacoma Intl
Fri 11/6
10:56 pm-9:30 am
1 stop7h 34m
Pittsburgh
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$189
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Sat 10/24
6:15 am-6:00 pm
2 stops8h 45m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$194
SeattlePittsburgh
SEA Seattle/Tacoma Intl - PIT Pittsburgh
SEAPIT
Seattle/Tacoma Intl
Sat 3/6
6:30 am-8:40 pm
2 stops11h 10m
Pittsburgh
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$195
SeattleWashington, D.C.
SEA Seattle/Tacoma Intl - DCA Washington, D.C. Reagan-National
SEADCA
Seattle/Tacoma Intl
Mon 2/22
7:00 am-9:00 pm
1 stop11h 00m
Washington, D.C. Reagan-National
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$199
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Seattle to Pennsylvania
Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Seattle with our price prediction graph.
SEA-PIT
SEA-PHL
SEA-DCA
SEA-IAD
SEA-ABE
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 Seattle to Pennsylvania
SEA-USPA
SEA-PIT
SEA-PHL
SEA-DCA
SEA-IAD
What is the cheapest month to book a flight from Seattle to Pennsylvania?
Currently, October is the cheapest month in which you can book a flight from Seattle to Pennsylvania (average of $362). Flying from Seattle to Pennsylvania in December is currently the most expensive (average of $496). 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 SEA to PA?
Find hourly flight availability from Seattle 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 September 9, 2026.
It’s typically best to fly out from Seattle to Pennsylvania in the morning. Doing so could potentially save you 36% on the flight price compared to flying in the afternoon, which is usually more expensive.
Weekly flight availability from Seattle to Pennsylvania
Explore weekly flight availability from Seattle 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 September 9, 2026.
The most flights from SEA to USPA are scheduled on a Monday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Seattle to Pennsylvania?
Airfare is below average for this route at the moment.
Seattle to Pennsylvania flights typically cost between $359 and $490 in October.The cheapest round-trip price found within the last 5 days was $357 on Southwest (Oct 6-Oct 13).
How far ahead should I book a flight from Seattle to Pennsylvania?
Booking 18 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Pennsylvania. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 September 9, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from Seattle to Pennsylvania. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Related info for your journey
Find useful and relevant information for your journey from Seattle 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 Seattle to Pennsylvania
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Complete your trip
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Search flights from Seattle to Pennsylvania by cabin class
Find flights from Seattle to Pennsylvania, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Pennsylvania flights
Browse other Seattle and Pennsylvania flight options. Last updated on September 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Pennsylvania flights
Consider these flights traveling from Seattle to Pennsylvania.
Top 6 airlines flying from Seattle to Pennsylvania
Discover the top 6 airlines that operate flights from Seattle 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 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$167 | Average$306 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$469 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$578 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$196 | Average$402 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$222 | Average$394 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$238 | Average$509 | FlexibilityNo cancel fee | On-time69% |