$165+ Cheap flights from Seattle (SEA) to Delaware
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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA ā ILG
Sep 12 ā Sep 191
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Delaware with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click āFind dealsā2. Select your favorite providers
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Cheapest flights from Seattle to DelawareExplore the most affordable flight options available from Seattle to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2026.
Explore the most affordable flight options available from Seattle to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2026.
This CheapOair deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure CheapOair is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/127:06 pm -
1 stop13h 43m
Mon 8/1711:06 am -
1 stop26h 33m
Deal found 8/9![Frontier logo]()
$329
This CheapOair deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure CheapOair is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/39:29 pm -
1 stop30h 01m
Mon 9/78:00 am -
1 stop29h 39m
Deal found 8/10![Frontier logo]()
$330
This Booking.com deal was found by Cheapflights users on 8/11. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Booking.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/198:53 pm -
1 stop30h 37m
Sun 8/238:37 pm -
1 stop15h 42m
Deal found 8/11![Frontier logo]()
$331
This Southwest deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/12:10 pm -
1 stop7h 50m
Mon 10/57:10 pm -
1 stop8h 25m
Deal found 8/13![Southwest logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/47:06 pm -
1 stop7h 33m
Tue 9/225:32 pm -
2 stops24h 36m
Deal found 8/12![Frontier logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/311:35 pm -
1 stop13h 04m
Sun 9/206:10 pm -
2 stops18h 32m
Deal found 8/12![Multiple Airlines logo]()
$334
This CheapOair deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure CheapOair is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/249:29 pm -
1 stop30h 01m
Mon 8/318:37 pm -
1 stop15h 42m
Deal found 8/10![Frontier logo]()
$335
This Southwest deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 8/295:00 am -
2 stops12h 45m
Tue 9/1510:45 am -
1 stop10h 10m
Deal found 8/10![Southwest logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/79:36 pm -
1 stop29h 54m
Mon 9/284:48 pm -
1 stop8h 51m
Deal found 8/8![Multiple Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/1111:05 pm -
1 stop9h 10m
Fri 9/184:05 pm -
1 stop9h 55m
Deal found 8/13![Southwest logo]()
$340
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/18:20 am -
1 stop11h 39m
Sun 10/46:41 am -
1 stop19h 16m
Deal found 8/10![American Airlines logo]()
$814
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/76:25 am -
1 stop10h 46m
Mon 9/146:41 am -
1 stop7h 59m
Deal found 8/10![American Airlines logo]()
$966
Best flights from Seattle to DelawareDiscover carefully curated flight deals from Seattle to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
Discover carefully curated flight deals from Seattle to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
This Southwest deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/227:10 am -
2 stops10h 30m
Wed 9/232:45 pm -
2 stops11h 25m
Deal found 8/12![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/229:29 pm -
Nonstop5h 08m
Sun 10/257:00 am -
Nonstop5h 58m
Deal found 8/8![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/1111:05 pm -
1 stop9h 10m
Thu 9/172:05 pm -
1 stop12h 50m
Deal found 8/12![Southwest logo]()
$352
This Delta deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/119:30 pm -
Nonstop5h 20m
Thu 9/177:05 am -
Nonstop5h 51m
Deal found 8/12![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 8/11. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/1311:05 pm -
1 stop9h 05m
Tue 9/155:10 pm -
1 stop9h 00m
Deal found 8/11![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/229:29 pm -
Nonstop5h 08m
Mon 10/266:49 pm -
1 stop8h 10m
Deal found 8/8![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 8/11. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/109:30 pm -
Nonstop5h 20m
Sat 9/125:45 am -
1 stop7h 54m
Deal found 8/11![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/105:15 am -
1 stop7h 45m
Sun 9/131:35 pm -
1 stop12h 40m
Deal found 8/12![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/17:59 pm -
1 stop7h 06m
Sun 10/46:52 pm -
1 stop8h 07m
Deal found 8/10![Delta logo]()
$379
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/77:40 am -
2 stops10h 37m
Mon 9/146:41 am -
1 stop7h 59m
Deal found 8/10![American Airlines logo]()
$1,021
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/18:24 am -
2 stops11h 35m
Sun 10/46:05 am -
1 stop9h 06m
Deal found 8/10![American Airlines logo]()
$1,135
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/316:25 am -
1 stop10h 46m
Fri 9/46:41 am -
1 stop8h 09m
Deal found 8/12![American Airlines logo]()
$1,430
Last-minute flights from Seattle to DelawareDiscover last-minute flight deals from Seattle to Delaware. Data last updated August 13, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Delaware. Data last updated August 13, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure CheapOair is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/198:53 pm -
1 stop30h 37m
Sun 8/238:37 pm -
1 stop15h 42m
Deal found 8/9![Frontier logo]()
$329
This CheapOair deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure CheapOair is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/249:29 pm -
1 stop30h 01m
Mon 8/318:37 pm -
1 stop15h 42m
Deal found 8/10![Frontier logo]()
$335
This Southwest deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 8/295:00 am -
2 stops12h 45m
Tue 9/1510:45 am -
1 stop10h 10m
Deal found 8/10![Southwest logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/311:35 pm -
1 stop13h 04m
Sun 9/206:10 pm -
2 stops18h 32m
Deal found 8/12![Multiple Airlines logo]()
$334
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/316:25 am -
1 stop10h 46m
Fri 9/46:41 am -
1 stop8h 09m
Deal found 8/12![American Airlines logo]()
$1,430
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Thu 9/244:48 pm -
1 stop8h 51m
Deal found 8/9![Multiple Airlines logo]()
$341
This CheapOair deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure CheapOair is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/39:29 pm -
1 stop30h 01m
Mon 9/78:00 am -
1 stop29h 39m
Deal found 8/10![Frontier logo]()
$330
This Expedia deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Expedia is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/39:29 pm -
1 stop30h 01m
Sun 9/68:37 pm -
1 stop15h 42m
Deal found 8/9![Frontier logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/47:06 pm -
1 stop7h 33m
Tue 9/225:32 pm -
2 stops24h 36m
Deal found 8/12![Frontier logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/79:36 pm -
1 stop29h 54m
Mon 9/284:48 pm -
1 stop8h 51m
Deal found 8/8![Multiple Airlines logo]()
$339
This American Airlines deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/76:25 am -
1 stop10h 46m
Mon 9/146:41 am -
1 stop7h 59m
Deal found 8/10![American Airlines logo]()
$966
This Southwest deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/1111:05 pm -
1 stop9h 10m
Fri 9/184:05 pm -
1 stop9h 55m
Deal found 8/13![Southwest logo]()
$340
One-way flights from Seattle to DelawareSearch for one-way flight options from Seattle to Delaware. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
Search for one-way flight options from Seattle to Delaware. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/47:06 pm -
1 stop31h 33m
Deal found 8/11![Frontier logo]()
$165
This Frontier deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Frontier is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 8/227:06 pm -
1 stop7h 33m
Deal found 8/12![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/57:06 pm -
2 stops25h 47m
Deal found 8/12![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Super.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 8/298:53 pm -
1 stop30h 37m
Deal found 8/12![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/224:27 pm -
2 stops27h 51m
Deal found 8/9![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 10/97:41 pm -
2 stops56h 55m
Deal found 8/10![Frontier logo]()
$171
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure CheapOair is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/39:29 pm -
1 stop30h 01m
Deal found 8/11![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/12:37 pm -
2 stops28h 56m
Deal found 8/9![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/88:48 pm -
2 stops35h 01m
Deal found 8/12![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 10/64:27 pm -
2 stops46h 48m
Deal found 8/10![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/2910:57 am -
2 stops45h 35m
Deal found 8/8![Multiple Airlines logo]()
$176
This Super.com deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Super.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 8/277:06 pm -
1 stop7h 33m
Deal found 8/8![Frontier logo]()
$178
Find flight deals from Seattle to Delaware
Keep the following information in mind while searching for Seattle to Delaware flight deals. Data was last updated August 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $329 (CheapOair) |
One-way from | $165 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $450 |
Cheapflights Fare Finder
Ā
Customize your flight search to find flights from Seattle to Delaware 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 August 13, 2026.
Use the filters below to find and compare flights from Seattle to Delaware that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Tue 9/22
7:10 am-8:40 pm
2 stops10h 30m
Philadelphia
Wed 9/23
2:45 pm-11:10 pm
2 stops11h 25m
$342
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Fri 9/11
11:05 pm-11:15 am
1 stop9h 10m
Philadelphia
Thu 9/17
2:05 pm-11:55 pm
1 stop12h 50m
$352
Quickest round-trip
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Thu 10/22
9:29 pm-5:37 am
Nonstop5h 08m
Philadelphia
Sun 10/25
7:00 am-9:58 am
Nonstop5h 58m
$359
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Fri 9/11
9:30 pm-5:50 am
Nonstop5h 20m
Philadelphia
Thu 9/17
7:05 am-9:56 am
Nonstop5h 51m
$359
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Sun 9/13
11:05 pm-11:10 am
1 stop9h 05m
Philadelphia
Tue 9/15
5:10 pm-11:10 pm
1 stop9h 00m
$367
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Thu 10/22
9:29 pm-5:37 am
Nonstop5h 08m
Philadelphia
Mon 10/26
6:49 pm-11:59 pm
1 stop8h 10m
$369
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Thu 9/10
9:30 pm-5:50 am
Nonstop5h 20m
Philadelphia
Sat 9/12
5:45 am-10:39 am
1 stop7h 54m
$369
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Thu 9/10
5:15 am-4:00 pm
1 stop7h 45m
Philadelphia
Sun 9/13
1:35 pm-11:15 pm
1 stop12h 40m
$373
SeattlePhiladelphia
SEAĀ Seattle/Tacoma Intl - PHLĀ Philadelphia
SEAPHL
Seattle/Tacoma Intl
Thu 10/1
7:59 pm-6:05 am
1 stop7h 06m
Philadelphia
Sun 10/4
6:52 pm-11:59 pm
1 stop8h 07m
$379
SeattleSalisbury
SEAĀ Seattle/Tacoma Intl - SBYĀ Salisbury-Ocean City
SEASBY
Seattle/Tacoma Intl
Mon 9/7
7:40 am-9:17 pm
2 stops10h 37m
Salisbury-Ocean City
Mon 9/14
6:41 am-11:40 am
1 stop7h 59m
$1,021
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Seattle to Delaware
Have a flexible travel schedule? Discover the best time to fly to Delaware from Seattle with our price prediction graph.
SEA-PHL
SEA-SBY
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SEA-USDE
SEA-PHL
SEA-SBY
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