$120+ Cheap flights from Dulles Intl (IAD) to Washington
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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEA
Apr 17 — Apr 241
Round-trip
1 adult, Economy
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Cheapest flights from Dulles Intl to WashingtonExplore the most affordable flight options available from Dulles Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
Explore the most affordable flight options available from Dulles Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
This Trip.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:10 am
IAD
- SEA
Nonstop5h 48m
Alaska Airlines
Wed 5/69:41 pm
SEA
- IAD
Nonstop5h 09m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$198
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Tue 5/128:10 am
SEA
- IAD
Nonstop5h 12m
United Airlines
Deal found 3/16![United Airlines logo]()
$199
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:55 pm
IAD
- SEA
1 stop9h 05m
Southwest
Sat 5/169:00 am
SEA
- IAD
1 stop10h 55m
Southwest
Deal found 3/13![Southwest logo]()
$204
This Trip.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:10 am
IAD
- SEA
Nonstop5h 48m
Alaska Airlines
Sat 5/93:55 pm
SEA
- IAD
Nonstop5h 14m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:00 am
IAD
- SEA
Nonstop5h 53m
Hawaiian Airlines
Wed 4/159:40 pm
SEA
- IAD
Nonstop5h 00m
Hawaiian Airlines
Deal found 3/13![Hawaiian Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
IAD
- SEA
1 stop7h 32m
Delta
Sat 4/183:59 pm
SEA
- IAD
Nonstop4h 56m
Delta
Deal found 3/16![Delta logo]()
$209
This American Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
IAD
- SEA
1 stop9h 15m
American Airlines
Tue 5/510:29 pm
SEA
- IAD
1 stop7h 20m
American Airlines
Deal found 3/14![American Airlines logo]()
$218
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Sat 5/1610:41 pm
SEA
- IAD
Nonstop5h 09m
United Airlines
Deal found 3/13![United Airlines logo]()
$219
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:59 pm
IAD
- SEA
1 stop9h 45m
American Airlines
Fri 5/111:41 am
SEA
- IAD
1 stop8h 45m
American Airlines
Deal found 3/17![American Airlines logo]()
$220
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:59 pm
IAD
- SEA
1 stop9h 45m
American Airlines
Sat 5/26:00 am
SEA
- IAD
1 stop8h 09m
American Airlines
Deal found 3/18![American Airlines logo]()
$221
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:20 am
IAD
- SEA
2 stops14h 25m
Southwest
Mon 5/41:55 pm
SEA
- IAD
1 stop7h 25m
Southwest
Deal found 3/16![Southwest logo]()
$224
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:00 am
IAD
- SEA
Nonstop5h 53m
Alaska Airlines
Tue 4/283:55 pm
SEA
- IAD
Nonstop5h 14m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$229
Best flights from Dulles Intl to WashingtonDiscover carefully curated flight deals from Dulles Intl to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
Discover carefully curated flight deals from Dulles Intl to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
IAD
- SEA
1 stop7h 32m
Delta
Mon 5/114:05 pm
SEA
- IAD
Nonstop5h 10m
Delta
Deal found 3/16![Delta logo]()
$209
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:30 pm
IAD
- SEA
1 stop9h 00m
Southwest
Tue 5/126:30 am
SEA
- IAD
1 stop7h 20m
Southwest
Deal found 3/15![Southwest logo]()
$219
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Sat 5/167:36 pm
SEA
- IAD
1 stop8h 26m
United Airlines
Deal found 3/13![United Airlines logo]()
$229
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:22 pm
IAD
- PDX
1 stop18h 27m
Alaska Airlines
Tue 4/212:42 pm
PDX
- IAD
1 stop11h 58m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:00 am
IAD
- SEA
Nonstop5h 54m
Delta
Mon 4/2011:14 pm
SEA
- IAD
1 stop8h 04m
Delta
Deal found 3/17![Delta logo]()
$219
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Mon 4/278:00 am
SEA
- IAD
Nonstop5h 11m
United Airlines
Deal found 3/14![United Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:20 am
IAD
- SEA
2 stops14h 25m
Southwest
Tue 4/289:20 am
SEA
- IAD
2 stops11h 20m
Southwest
Deal found 3/17![Southwest logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:10 am
IAD
- ALW
1 stop19h 38m
Alaska Airlines
Sat 5/25:00 am
ALW
- IAD
1 stop16h 09m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$325
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:00 am
IAD
- YKM
1 stop20h 09m
Alaska Airlines
Sat 4/251:57 pm
YKM
- IAD
1 stop7h 12m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$325
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:00 am
IAD
- PDX
1 stop7h 37m
Delta
Tue 6/91:38 pm
PDX
- IAD
1 stop7h 17m
Delta
Deal found 3/13![Delta logo]()
$337
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:55 pm
IAD
- SEA
Nonstop5h 51m
United Airlines
Tue 6/21:30 pm
SEA
- IAD
1 stop8h 25m
United Airlines
Deal found 3/13![United Airlines logo]()
$340
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:20 am
IAD
- SEA
2 stops14h 25m
Southwest
Sat 4/255:45 am
SEA
- IAD
1 stop7h 40m
Southwest
Deal found 3/16![Southwest logo]()
$367
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/289:00 am
IAD
- PUW
1 stop8h 46m
Alaska Airlines
Wed 4/297:28 pm
PUW
- IAD
1 stop7h 22m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:00 am
IAD
- SEA
Nonstop6h 03m
Delta
Wed 4/83:55 pm
SEA
- IAD
Nonstop4h 54m
Delta
Deal found 3/16![Delta logo]()
$368
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/289:00 am
IAD
- PSC
1 stop9h 42m
Alaska Airlines
Sat 5/21:21 pm
PSC
- IAD
1 stop7h 48m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:50 am
IAD
- SEA
1 stop7h 35m
Southwest
Thu 4/235:30 am
SEA
- IAD
1 stop7h 20m
Southwest
Deal found 3/13![Southwest logo]()
$378
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:55 pm
IAD
- SEA
Nonstop5h 51m
United Airlines
Thu 7/3012:50 pm
SEA
- IAD
1 stop8h 55m
United Airlines
Deal found 3/16![United Airlines logo]()
$381
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:10 am
IAD
- GEG
1 stop9h 13m
Alaska Airlines
Wed 4/295:00 am
GEG
- IAD
1 stop10h 20m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 am
IAD
- GEG
1 stop10h 45m
Delta
Sat 4/182:10 pm
GEG
- IAD
1 stop6h 22m
Delta
Deal found 3/13![Delta logo]()
$388
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:35 pm
IAD
- SEA
Nonstop5h 45m
United Airlines
Sat 8/2211:00 pm
SEA
- IAD
1 stop9h 26m
United Airlines
Deal found 3/17![United Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:15 pm
IAD
- GEG
2 stops9h 29m
Delta
Thu 9/1710:45 pm
GEG
- IAD
1 stop7h 25m
Delta
Deal found 3/17![Delta logo]()
$414
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/910:13 am
IAD
- GEG
1 stop7h 58m
United Airlines
Mon 7/131:41 pm
GEG
- IAD
1 stop8h 04m
United Airlines
Deal found 3/13![United Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:20 am
IAD
- PDX
2 stops14h 15m
Southwest
Sat 5/306:25 am
PDX
- IAD
2 stops13h 30m
Southwest
Deal found 3/13![Southwest logo]()
$477
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:10 am
IAD
- BLI
1 stop8h 10m
Alaska Airlines
Sat 5/28:30 am
BLI
- IAD
2 stops12h 39m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$405
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:55 pm
IAD
- PDX
Nonstop5h 47m
United Airlines
Sun 5/2411:30 pm
PDX
- IAD
Nonstop5h 02m
United Airlines
Deal found 3/16![United Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
IAD
- PDX
2 stops9h 52m
Delta
Sun 5/37:32 pm
PDX
- IAD
2 stops13h 00m
Delta
Deal found 3/16![Delta logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:20 pm
IAD
- PUW
1 stop26h 31m
Alaska Airlines
Sun 4/267:28 pm
PUW
- IAD
1 stop7h 22m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:55 pm
IAD
- PDX
Nonstop5h 47m
United Airlines
Sun 5/107:45 pm
PDX
- IAD
1 stop8h 50m
United Airlines
Deal found 3/14![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/115:50 am
IAD
- PDX
1 stop7h 25m
Southwest
Sat 4/187:10 am
PDX
- IAD
2 stops12h 45m
Southwest
Deal found 3/13![Southwest logo]()
$541
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:58 pm
IAD
- GEG
1 stop7h 08m
Delta
Mon 5/117:23 pm
GEG
- IAD
2 stops10h 53m
Delta
Deal found 3/15![Delta logo]()
$456
Last-minute flights from Dulles Intl to WashingtonDiscover last-minute flight deals from Dulles Intl to Washington. Data last updated March 18, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Washington. Data last updated March 18, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:00 am
IAD
- SEA
Nonstop5h 53m
Hawaiian Airlines
Wed 4/159:40 pm
SEA
- IAD
Nonstop5h 00m
Hawaiian Airlines
Deal found 3/13![Hawaiian Airlines logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:00 am
IAD
- SEA
Nonstop5h 53m
Alaska Airlines
Tue 4/283:55 pm
SEA
- IAD
Nonstop5h 14m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$229
This Delta deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
IAD
- SEA
1 stop7h 32m
Delta
Sat 4/183:59 pm
SEA
- IAD
Nonstop4h 56m
Delta
Deal found 3/16![Delta logo]()
$209
This Alaska Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:20 pm
IAD
- SEA
Nonstop5h 45m
Alaska Airlines
Wed 5/63:55 pm
SEA
- IAD
Nonstop5h 14m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$199
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:55 pm
IAD
- SEA
1 stop9h 05m
Southwest
Sat 5/169:00 am
SEA
- IAD
1 stop10h 55m
Southwest
Deal found 3/13![Southwest logo]()
$204
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:55 pm
IAD
- SEA
Nonstop5h 58m
United Airlines
Sat 5/1610:41 pm
SEA
- IAD
Nonstop5h 09m
United Airlines
Deal found 3/13![United Airlines logo]()
$219
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:59 pm
IAD
- SEA
1 stop9h 45m
American Airlines
Fri 5/111:41 am
SEA
- IAD
1 stop8h 45m
American Airlines
Deal found 3/17![American Airlines logo]()
$220
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:59 pm
IAD
- SEA
1 stop9h 45m
American Airlines
Sat 5/26:00 am
SEA
- IAD
1 stop8h 09m
American Airlines
Deal found 3/18![American Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 am
IAD
- SEA
Nonstop5h 54m
Delta
Fri 5/13:59 pm
SEA
- IAD
Nonstop4h 56m
Delta
Deal found 3/13![Delta logo]()
$234
This American Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
IAD
- SEA
1 stop9h 15m
American Airlines
Tue 5/510:29 pm
SEA
- IAD
1 stop7h 20m
American Airlines
Deal found 3/14![American Airlines logo]()
$218
This Trip.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:10 am
IAD
- SEA
Nonstop5h 48m
Alaska Airlines
Wed 5/69:41 pm
SEA
- IAD
Nonstop5h 09m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$198
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:20 am
IAD
- SEA
2 stops14h 25m
Southwest
Mon 5/41:55 pm
SEA
- IAD
1 stop7h 25m
Southwest
Deal found 3/16![Southwest logo]()
$224
One-way flights from Dulles Intl to WashingtonSearch for one-way flight options from Dulles Intl to Washington. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
Search for one-way flight options from Dulles Intl to Washington. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:00 am
IAD
- SEA
Nonstop5h 54m
Delta
Deal found 3/13![Delta logo]()
$120
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:20 am
IAD
- SEA
2 stops14h 25m
Southwest
Deal found 3/17![Southwest logo]()
$121
This CheapOair deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/319:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 3/16![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:07 am
IAD
- SEA
2 stops25h 42m
Frontier
Deal found 3/18![Frontier logo]()
$124
This Expedia deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:47 pm
IAD
- SEA
1 stop18h 39m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:05 am
IAD
- SEA
2 stops30h 22m
Frontier
Deal found 3/17![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:10 am
IAD
- SEA
Nonstop5h 48m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
IAD
- SEA
2 stops29h 27m
Frontier
Deal found 3/13![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:43 pm
IAD
- SEA
2 stops41h 06m
Frontier
Deal found 3/14![Frontier logo]()
$136
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/23:55 pm
IAD
- GEG
1 stop8h 40m
Southwest
Deal found 3/15![Southwest logo]()
$136
This CheapOair deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/39:12 am
IAD
- SEA
1 stop28h 24m
Frontier
Deal found 3/16![Frontier logo]()
$137
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:10 am
IAD
- SEA
1 stop9h 27m
United Airlines
Deal found 3/17![United Airlines logo]()
$140
Find flight deals from Dulles Intl to Washington
Keep the following information in mind while searching for Dulles Intl to Washington flight deals. Data was last updated March 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $198 (Trip.com) |
One-way from | $120 (Delta) |
Popular in | June |
Cheapest in | February |
Average price | $424 |
Good round-trip deal | $347 or less |
Good one-way deal | $188 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Washington 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 March 18, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sat 4/25
6:00 am-10:32 am
1 stop7h 32m
Seattle/Tacoma Intl
Mon 5/11
4:05 pm-12:15 am
Nonstop5h 10m
$209
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Tue 5/5
4:30 pm-10:30 pm
1 stop9h 00m
Seattle/Tacoma Intl
Tue 5/12
6:30 am-4:50 pm
1 stop7h 20m
$219
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Tue 4/14
7:00 am-9:54 am
Nonstop5h 54m
Seattle/Tacoma Intl
Mon 4/20
11:14 pm-10:18 am
1 stop8h 04m
$219
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sat 4/25
5:55 pm-8:53 pm
Nonstop5h 58m
Seattle/Tacoma Intl
Sat 5/16
7:36 pm-7:02 am
1 stop8h 26m
$229
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Sat 4/25
5:55 pm-8:53 pm
Nonstop5h 58m
Seattle/Tacoma Intl
Mon 4/27
8:00 am-4:11 pm
Nonstop5h 11m
$303
Washington, D.C.Seattle
IAD - SEA
IADSEA
Washington, D.C. Dulles Intl
Wed 4/22
6:20 am-5:45 pm
2 stops14h 25m
Seattle/Tacoma Intl
Tue 4/28
9:20 am-11:40 pm
2 stops11h 20m
$313
Washington, D.C.Portland
IAD - PDX
IADPDX
Washington, D.C. Dulles Intl
Fri 4/17
6:22 pm-9:49 am
1 stop18h 27m
Portland
Tue 4/21
2:42 pm-5:40 am
1 stop11h 58m
$317
Washington, D.C.Walla Walla
IAD - ALW
IADALW
Washington, D.C. Dulles Intl
Tue 4/28
7:10 am-11:48 pm
1 stop19h 38m
Walla Walla
Sat 5/2
5:00 am-12:09 am
1 stop16h 09m
$325
Washington, D.C.Yakima
IAD - YKM
IADYKM
Washington, D.C. Dulles Intl
Tue 4/21
7:00 am-12:09 am
1 stop20h 09m
Yakima Air Terminal
Sat 4/25
1:57 pm-12:09 am
1 stop7h 12m
$325
Washington, D.C.Portland
IAD - PDX
IADPDX
Washington, D.C. Dulles Intl
Tue 6/2
7:00 am-11:37 am
1 stop7h 37m
Portland
Tue 6/9
1:38 pm-11:55 pm
1 stop7h 17m
$337
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Dulles Intl to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Dulles Intl with our price prediction graph.
IAD-SEA
IAD-PDX
IAD-ALW
IAD-YKM
IAD-PUW
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, D.C. Dulles Intl Airport to Washington
IAD-USWA
IAD-SEA
IAD-PDX
IAD-ALW
IAD-YKM
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to State of Washington?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to State of Washington (average of $119). Flying from Washington, D.C. Dulles Intl Airport to State of Washington in September is currently the most expensive (average of $228). 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 IAD to WA?
Find hourly flight availability from Dulles Intl to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 18, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 7% on flights from Washington, D.C. Dulles Intl Airport to State of Washington by exploring options for tickets at noon.
What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to State of Washington?
Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Washington. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to State of Washington flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Washington, D.C. Dulles Intl Airport to State of Washington
Explore weekly flight availability from Dulles Intl to Washington. 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 March 18, 2026.
The most flights from IAD to USWA are scheduled on a Wednesday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
Reviews of airlines servicing Washington
Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated March 18, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Washington, such as Alaska Airlines,Delta, andHawaiian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Food
7.0
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
7.9
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Washington. 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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Dulles Intl and Washington flights
Browse other Dulles Intl and Washington flight options. Last updated on March 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Dulles Intl to Washington flights
Consider these flights traveling from Dulles Intl to Washington.
Top 7 airlines flying from Dulles Intl to Washington
Discover the top 7 airlines that operate flights from Dulles Intl to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$111 | Average$252 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$143 | Average$353 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$144 | Average$373 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$206 | Average$451 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$231 | Average$472 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$336 | Average$497 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$367 | Average$492 | FlexibilityNo cancel fee | On-time63% |