$164+ Cheap flights from Washington 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ILG
Sep 24 — Oct 11
Round-trip
1 adult, Economy
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Find cheap flights from Washington 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 “Find deals”2. Select your favorite providers
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Cheapest flights from Washington to DelawareExplore the most affordable flight options available from Washington to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.
Explore the most affordable flight options available from Washington to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.
This Trip.com deal was found by Cheapflights users on 8/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:41 pm -
1 stop10h 00m
Wed 10/144:17 pm -
1 stop9h 36m
Deal found 8/23![Alaska Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Tue 9/1512:40 pm -
2 stops29h 28m
Deal found 8/21![Frontier logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Wed 9/2312:40 pm -
2 stops24h 02m
Deal found 8/21![Frontier logo]()
$332
This Trip.com deal was found by Cheapflights users on 8/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/74:27 pm -
1 stop29h 49m
Wed 10/147:02 am -
Nonstop5h 53m
Deal found 8/23![Multiple Airlines logo]()
$333
This Expedia deal was found by Cheapflights users on 8/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:29 pm -
Nonstop5h 12m
Mon 10/268:44 pm -
1 stop17h 15m
Deal found 8/23![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:00 pm -
2 stops32h 21m
Sat 10/175:50 am -
1 stop12h 22m
Deal found 8/21![Frontier logo]()
$335
This SmartFares deal was found by Cheapflights users on 8/23. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:29 pm -
Nonstop5h 12m
Wed 10/146:41 pm -
Nonstop6h 00m
Deal found 8/23![Alaska Airlines logo]()
$336
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 9/2811:14 pm -
1 stop7h 28m
Wed 10/76:30 pm -
1 stop9h 45m
Deal found 8/25![United Airlines logo]()
$337
This Expedia deal was found by Cheapflights users on 8/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Sat 9/124:48 pm -
1 stop8h 51m
Deal found 8/24![Multiple Airlines logo]()
$338
This Priceline deal was found by Cheapflights users on 8/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:29 pm -
Nonstop5h 12m
Mon 10/195:50 am -
1 stop12h 22m
Deal found 8/21![Multiple Airlines logo]()
$339
This CheapOair deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:27 pm -
1 stop29h 49m
Fri 10/165:50 am -
1 stop12h 22m
Deal found 8/20![Frontier logo]()
$340
This Frontier deal was found by Cheapflights users on 8/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:06 pm -
1 stop7h 33m
Tue 9/810:15 pm -
1 stop14h 27m
Deal found 8/23![Frontier logo]()
$341
Best flights from Washington to DelawareDiscover carefully curated flight deals from Washington to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.
Discover carefully curated flight deals from Washington to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 9/2811:14 pm -
1 stop7h 28m
Wed 10/76:30 pm -
1 stop9h 45m
Deal found 8/25![United Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:38 pm -
1 stop9h 06m
Mon 10/197:00 am -
1 stop8h 18m
Deal found 8/21![Delta logo]()
$341
This Southwest deal was found by Cheapflights users on 8/21. 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 2/41:05 pm -
1 stop7h 20m
Sun 2/76:20 pm -
1 stop7h 40m
Deal found 8/21![Southwest logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 1/265:02 am -
1 stop9h 09m
Wed 1/276:14 pm -
1 stop8h 43m
Deal found 8/25![Alaska Airlines logo]()
$375
This Delta deal was found by Cheapflights users on 8/24. 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.
Wed 10/145:38 pm -
1 stop9h 06m
Mon 10/197:00 am -
1 stop8h 18m
Deal found 8/24![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 9/2311:02 pm -
1 stop8h 00m
Thu 9/246:34 pm -
1 stop9h 00m
Deal found 8/25![United Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 8/23. 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 9/227:05 am -
2 stops10h 35m
Tue 9/293:05 pm -
2 stops9h 55m
Deal found 8/23![Southwest logo]()
$367
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:25 am -
1 stop10h 55m
Sat 9/266:41 am -
2 stops14h 11m
Deal found 8/21![American Airlines logo]()
$750
This Delta deal was found by Cheapflights users on 8/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:06 pm -
1 stop7h 59m
Mon 9/216:52 pm -
1 stop7h 37m
Deal found 8/23![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/119:00 am -
1 stop8h 55m
Tue 9/156:25 am -
1 stop8h 07m
Deal found 8/25![United Airlines logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 8/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:27 pm -
Nonstop5h 13m
Wed 9/304:48 pm -
1 stop8h 51m
Deal found 8/21![Alaska Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 8/25. 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 10/159:15 pm -
2 stops10h 35m
Wed 10/211:20 pm -
2 stops9h 50m
Deal found 8/25![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 8/22. 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.
Thu 12/171:55 pm -
1 stop6h 59m
Mon 1/46:15 am -
1 stop8h 29m
Deal found 8/22![Delta logo]()
$341
This Southwest deal was found by Cheapflights users on 8/25. 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.
Fri 9/118:25 pm -
2 stops11h 50m
Tue 9/152:45 pm -
2 stops11h 25m
Deal found 8/25![Southwest logo]()
$368
This Expedia deal was found by Cheapflights users on 8/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:01 pm -
1 stop20h 13m
Wed 10/144:17 pm -
1 stop9h 37m
Deal found 8/25![Alaska Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:30 pm -
Nonstop5h 20m
Tue 9/227:05 am -
Nonstop5h 51m
Deal found 8/20![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/248:30 am -
1 stop7h 54m
Sun 9/276:00 am -
1 stop9h 05m
Deal found 8/22![United Airlines logo]()
$397
This Alaska Airlines deal was found by Cheapflights users on 8/22. 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.
Sun 10/256:00 pm -
1 stop8h 41m
Thu 10/297:02 am -
1 stop9h 16m
Deal found 8/22![Alaska Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 8/25. 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 9/1711:30 pm -
1 stop8h 40m
Sat 9/1911:55 am -
2 stops9h 35m
Deal found 8/25![Southwest logo]()
$379
This Delta deal was found by Cheapflights users on 8/22. 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.
Sat 11/76:00 am -
1 stop7h 44m
Wed 11/117:00 am -
Nonstop6h 05m
Deal found 8/22![Delta logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 9/227:30 am -
Nonstop5h 15m
Tue 9/294:48 pm -
Nonstop5h 46m
Deal found 8/25![Alaska Airlines logo]()
$412
This Southwest deal was found by Cheapflights users on 8/21. 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.
Tue 12/296:30 pm -
2 stops12h 55m
Mon 1/45:00 am -
1 stop8h 15m
Deal found 8/21![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 8/24. 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.
Thu 9/249:30 pm -
Nonstop5h 20m
Sun 9/277:20 am -
1 stop10h 30m
Deal found 8/24![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 8/23. 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 10/2411:13 pm -
1 stop7h 35m
Tue 10/271:20 pm -
2 stops13h 11m
Deal found 8/23![United Airlines logo]()
$452
This Alaska Airlines deal was found by Cheapflights users on 8/24. 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.
Thu 9/247:30 am -
Nonstop5h 15m
Mon 9/284:48 pm -
Nonstop5h 46m
Deal found 8/24![Alaska Airlines logo]()
$417
This Southwest deal was found by Cheapflights users on 8/21. 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 10/411:35 pm -
1 stop8h 15m
Wed 10/75:30 pm -
1 stop8h 35m
Deal found 8/21![Southwest logo]()
$387
This Delta deal was found by Cheapflights users on 8/24. 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.
Wed 9/95:24 am -
1 stop9h 18m
Wed 9/237:05 am -
1 stop11h 09m
Deal found 8/24![Delta logo]()
$375
This United Airlines deal was found by Cheapflights users on 8/22. 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 12/149:00 am -
1 stop7h 31m
Mon 1/410:37 am -
2 stops14h 53m
Deal found 8/22![United Airlines logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 8/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:20 am -
1 stop7h 25m
Wed 9/94:48 pm -
1 stop9h 00m
Deal found 8/21![Alaska Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 8/21. 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 10/189:50 pm -
2 stops10h 00m
Mon 10/197:10 pm -
1 stop8h 00m
Deal found 8/21![Southwest logo]()
$407
Last-minute flights from Washington to DelawareDiscover last-minute flight deals from Washington to Delaware. Data last updated August 25, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Delaware. Data last updated August 25, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:06 pm -
1 stop7h 33m
Tue 9/810:15 pm -
1 stop14h 27m
Deal found 8/23![Frontier logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Tue 9/1512:40 pm -
2 stops29h 28m
Deal found 8/21![Frontier logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Wed 9/2312:40 pm -
2 stops24h 02m
Deal found 8/21![Frontier logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Wed 9/1612:40 pm -
2 stops24h 02m
Deal found 8/21![Frontier logo]()
$334
This Expedia deal was found by Cheapflights users on 8/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Sat 9/124:48 pm -
1 stop8h 51m
Deal found 8/24![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Mon 9/215:40 pm -
2 stops19h 02m
Deal found 8/21![Frontier logo]()
$344
This Frontier deal was found by Cheapflights users on 8/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
1 stop7h 32m
Sun 9/67:00 am -
1 stop11h 28m
Deal found 8/21![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:48 pm -
1 stop30h 42m
Tue 9/225:32 pm -
2 stops24h 36m
Deal found 8/24![Frontier logo]()
$343
This Southwest deal was found by Cheapflights users on 8/21. 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.
Sat 9/125:30 am -
2 stops12h 20m
Sat 9/194:50 pm -
1 stop7h 40m
Deal found 8/21![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 8/22. 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.
Wed 9/1611:05 pm -
2 stops11h 10m
Wed 10/211:50 pm -
2 stops11h 50m
Deal found 8/22![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 9/2811:14 pm -
1 stop7h 28m
Wed 10/76:30 pm -
1 stop9h 45m
Deal found 8/25![United Airlines logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 9/297:24 pm -
1 stop17h 21m
Tue 10/64:17 pm -
1 stop9h 36m
Deal found 8/25![Alaska Airlines logo]()
$341
One-way flights from Washington to DelawareSearch for one-way flight options from Washington to Delaware. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
Search for one-way flight options from Washington to Delaware. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:27 pm -
1 stop29h 49m
Deal found 8/21![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:00 pm -
2 stops26h 16m
Deal found 8/23![Frontier logo]()
$165
This Super.com deal was found by Cheapflights users on 8/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:16 pm -
1 stop31h 02m
Deal found 8/22![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Tue 10/278:09 pm -
2 stops19h 10m
Deal found 8/25![Frontier logo]()
$168
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 9/2111:04 pm -
1 stop7h 39m
Deal found 8/25![United Airlines logo]()
$169
This Super.com deal was found by Cheapflights users on 8/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:48 pm -
1 stop30h 42m
Deal found 8/24![Frontier logo]()
$171
This Delta deal was found by Cheapflights users on 8/24. 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.
Mon 9/145:14 pm -
1 stop9h 51m
Deal found 8/24![Delta logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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.
Thu 9/104:27 pm -
2 stops35h 49m
Deal found 8/20![Frontier logo]()
$173
This Southwest deal was found by Cheapflights users on 8/25. 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 10/2911:35 am -
2 stops10h 25m
Deal found 8/25![Southwest logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Thu 9/249:45 pm -
2 stops30h 31m
Deal found 8/25![Frontier logo]()
$175
This United Airlines deal was found by Cheapflights users on 8/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:00 am -
2 stops13h 27m
Deal found 8/21![United Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Fri 10/238:00 pm -
2 stops19h 15m
Deal found 8/25![Frontier logo]()
$177
Find flight deals from Washington to Delaware
Keep the following information in mind while searching for Washington to Delaware flight deals. Data was last updated August 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $326 (Trip.com) |
One-way from | $164 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $455 |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 7,457,451 searches. Data last updated August 25, 2026.
Use the filters below to find and compare flights from Washington to Delaware that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattlePhiladelphia
SEA Seattle/Tacoma Intl - PHL Philadelphia
SEAPHL
Seattle/Tacoma Intl
Mon 9/28
11:14 pm-9:42 am
1 stop7h 28m
Philadelphia
Wed 10/7
6:30 pm-1:15 am
1 stop9h 45m
$337
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Thu 10/15
5:38 pm-5:44 am
1 stop9h 06m
Philadelphia
Mon 10/19
7:00 am-12:18 pm
1 stop8h 18m
$341
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Wed 10/14
5:38 pm-5:44 am
1 stop9h 06m
Philadelphia
Mon 10/19
7:00 am-12:18 pm
1 stop8h 18m
$341
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Mon 9/14
7:06 pm-6:05 am
1 stop7h 59m
Philadelphia
Mon 9/21
6:52 pm-11:29 pm
1 stop7h 37m
$341
SpokanePhiladelphia
GEG Spokane - PHL Philadelphia
GEGPHL
Spokane
Thu 12/17
1:55 pm-11:54 pm
1 stop6h 59m
Philadelphia
Mon 1/4
6:15 am-11:44 am
1 stop8h 29m
$341
PortlandPhiladelphia
PDX Portland - PHL Philadelphia
PDXPHL
Portland
Wed 9/23
11:02 pm-10:02 am
1 stop8h 00m
Philadelphia
Thu 9/24
6:34 pm-12:34 am
1 stop9h 00m
$357
SeattlePhiladelphia
SEA Seattle/Tacoma Intl - PHL Philadelphia
SEAPHL
Seattle/Tacoma Intl
Thu 2/4
1:05 pm-11:25 pm
1 stop7h 20m
Philadelphia
Sun 2/7
6:20 pm-11:00 pm
1 stop7h 40m
$358
SeattlePhiladelphia
SEA Seattle/Tacoma Intl - PHL Philadelphia
SEAPHL
Seattle/Tacoma Intl
Fri 9/11
9:00 am-8:55 pm
1 stop8h 55m
Philadelphia
Tue 9/15
6:25 am-11:32 am
1 stop8h 07m
$358
SeattlePhiladelphia
SEA Seattle/Tacoma Intl - PHL Philadelphia
SEAPHL
Seattle/Tacoma Intl
Sat 9/5
9:30 pm-5:50 am
Nonstop5h 20m
Philadelphia
Tue 9/22
7:05 am-9:56 am
Nonstop5h 51m
$359
PortlandPhiladelphia
PDX Portland - PHL Philadelphia
PDXPHL
Portland
Tue 9/22
7:05 am-8:40 pm
2 stops10h 35m
Philadelphia
Tue 9/29
3:05 pm-10:00 pm
2 stops9h 55m
$367
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Delaware
Have a flexible travel schedule? Discover the best time to fly to Delaware from Washington with our price prediction graph.
SEA-PHL
GEG-PHL
PDX-PHL
PSC-PHL
PDX-SBY
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Delaware
USWA-USDE
SEA-PHL
GEG-PHL
PDX-PHL
PSC-PHL
No data available for this route at this time. Please check back soon.
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