Cheap Flights from Seattle, WA to Washington D.C., DC from $126
On Cheapflightsplus.com you will find 12 direct and 28 connecting flights from Seattle to Washington D.C.. You can compare airfare deals from 5 airlines and multiple travel sites from $126, book and save on cheap plane tickets and last minute offers. Also check out SEA-WAS flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip Seattle to Washington D.C. Flight Deals
Best Flights from Seattle to Washington D.C. Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $140 | 15:59 Seattle Seattle-Tacoma Intl | 23:59 Washington D.C. Dulles International | 5h 0m | Alaska Airlines | AS348 |
from $159 | 13:58 Seattle Seattle-Tacoma Intl | 21:59 Washington D.C. Ronald Reagan | 5h 1m | Hawaiian Airlines | HA6702 |
from $163 | 23:30 Seattle Seattle-Tacoma Intl | 07:27+1 день Washington D.C. Dulles International | 4h 57m | Alaska Airlines | AS367 |
from $164 | 13:58 Seattle Seattle-Tacoma Intl | 21:59 Washington D.C. Ronald Reagan | 5h 1m | Alaska Airlines | AS2 |
from $203 | 23:30 Seattle Seattle-Tacoma Intl | 07:27+1 день Washington D.C. Dulles International | 4h 57m | Hawaiian Airlines | HA6718 |
from $206 | 09:15 Seattle Seattle-Tacoma Intl | 17:13 Washington D.C. Dulles International | 4h 58m | Alaska Airlines | AS406 |
from $211 | 23:20 Seattle Seattle-Tacoma Intl | 07:17+1 день Washington D.C. Dulles International | 4h 57m | United Airlines | UA2211 |
from $211 | 08:34 Seattle Seattle-Tacoma Intl | 16:43 Washington D.C. Ronald Reagan | 5h 9m | Alaska Airlines | AS4 |
from $213 | 22:05 Seattle Seattle-Tacoma Intl | 06:02+1 день Washington D.C. Dulles International | 4h 57m | United Airlines | UA2402 |
from $239 | 13:00 Seattle Seattle-Tacoma Intl | 20:57 Washington D.C. Dulles International | 4h 57m | United Airlines | UA2275 |
from $126 | 06:25 Seattle Seattle-Tacoma Intl | 21:57 Washington D.C. Ronald Reagan | 12h 32m layover 6h 14m - Denver | Frontier Airlines | F93406 F9690 |
from $187 | 05:25 Seattle Seattle-Tacoma Intl | 16:02 Washington D.C. Ronald Reagan | 7h 37m layover 1h 40m - Portland | Hawaiian Airlines | HA6833 HA6710 |
from $209 | 00:20 Seattle Seattle-Tacoma Intl | 10:56 Washington D.C. Ronald Reagan | 7h 36m layover 1h 32m - Chicago | United Airlines | UA1832 UA1010 |
from $209 | 23:58 Seattle Seattle-Tacoma Intl | 11:46+1 день Washington D.C. Ronald Reagan | 8h 48m layover 1h 19m - Houston | United Airlines | UA2379 UA512 |
from $211 | 09:12 Seattle Seattle-Tacoma Intl | 09:23+1 день Washington D.C. Dulles International | 21h 11m layover 5h 20m - Minneapolis 8h 52m - Fletcher | Sun Country Airlines | SY282 G4246 G4217 |
from $389 | 08:55 Seattle Seattle-Tacoma Intl | 21:42 Washington D.C. Ronald Reagan | 9h 47m layover 0h 40m - Portland 0h 31m - Los Angeles | Alaska Airlines | AS2193 AS1143 AS6 |
Flight Schedule Seattle (Washington) to Washington D.C. (District of Columbia)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
08:00 — 16:11
|
08:00 — 16:11
UA1873
United Airlines
Seattle — Washington D.C.
|
5h 11m |
Find flight
from$213 |
|
08:34 — 16:43
|
08:34 — 16:43
AS4
Alaska Airlines
Seattle — Washington D.C.
|
5h 9m |
Find flight
from$211 |
|
08:34 — 16:43
|
08:34 — 16:43
HA6704
Hawaiian Airlines
Seattle — Washington D.C.
|
5h 9m |
Find flight
from$214 |
|
09:15 — 17:13
|
09:15 — 17:13
AS406
Alaska Airlines
Seattle — Washington D.C.
|
4h 58m |
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from$206 |
|
13:00 — 20:57
|
13:00 — 20:57
UA2275
United Airlines
Seattle — Washington D.C.
|
4h 57m |
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from$239 |
|
13:58 — 21:59
|
13:58 — 21:59
HA6702
Hawaiian Airlines
Seattle — Washington D.C.
|
5h 1m |
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from$159 |
|
13:58 — 21:59
|
13:58 — 21:59
AS2
Alaska Airlines
Seattle — Washington D.C.
|
5h 1m |
Find flight
from$164 |
|
15:59 — 23:59
|
15:59 — 23:59
AS348
Alaska Airlines
Seattle — Washington D.C.
|
5h |
Find flight
from$140 |
|
22:05 — 06:02
+1 day
|
22:05 — 06:02
UA2402
United Airlines
Seattle — Washington D.C.
|
4h 57m |
Find flight
from$213 |
|
23:20 — 07:17
+1 day
|
23:20 — 07:17
UA2211
United Airlines
Seattle — Washington D.C.
|
4h 57m |
Find flight
from$211 |
|
23:30 — 07:27
+1 day
|
23:30 — 07:27
AS367
Alaska Airlines
Seattle — Washington D.C.
|
4h 57m |
Find flight
from$163 |
|
23:30 — 07:27
+1 day
|
23:30 — 07:27
HA6718
Hawaiian Airlines
Seattle — Washington D.C.
|
4h 57m |
Find flight
from$203 |
|
00:20 — 10:56
|
00:20 — 06:28
UA1832
United Airlines
Seattle — Chicago
1h 32m stop
08:00 — 10:56
UA1010
United Airlines
Chicago — Washington D.C.
|
7h 36m including layover |
Find flight
from$209 |
|
00:20 — 11:55
|
00:20 — 06:28
UA1832
United Airlines
Seattle — Chicago
2h 24m stop
08:52 — 11:55
UA2277
United Airlines
Chicago — Washington D.C.
|
8h 35m including layover |
Find flight
from$227 |
|
05:10 — 16:50
|
05:10 — 07:22
UA706
United Airlines
Seattle — San Francisco
1h 8m stop
08:30 — 16:50
UA1678
United Airlines
San Francisco — Washington D.C.
|
8h 40m including layover |
Find flight
from$230 |
|
05:25 — 16:02
|
05:20 — 06:17
HA6833
Hawaiian Airlines
Seattle — Portland
1h 40m stop
08:00 — 16:06
HA6710
Hawaiian Airlines
Portland — Washington D.C.
|
7h 37m including layover |
Find flight
from$187 |
|
06:00 — 16:18
|
06:00 — 12:07
AS408
Alaska Airlines
Seattle — Chicago
1h 15m stop
13:22 — 16:18
AS4384
Alaska Airlines
Chicago — Washington D.C.
|
7h 18m including layover |
Find flight
from$4915 |
|
06:25 — 21:57
|
06:25 — 10:16
F93406
Frontier Airlines
Seattle — Denver
6h 14m stop
16:25 — 21:59
F9690
Frontier Airlines
Denver — Washington D.C.
|
12h 32m including layover |
Find flight
from$126 |
|
10:56 — 21:02
|
10:56 — 17:05
UA265
United Airlines
Seattle — Chicago
55m stop
18:00 — 21:02
UA1269
United Airlines
Chicago — Washington D.C.
|
7h 6m including layover |
Find flight
from$346 |
|
10:56 — 20:55
|
10:56 — 17:05
UA265
United Airlines
Seattle — Chicago
51m stop
17:56 — 20:55
UA2677
United Airlines
Chicago — Washington D.C.
|
6h 59m including layover |
Find flight
from$529 |
|
12:49 — 00:45
+1 day
|
12:49 — 16:40
UA757
United Airlines
Seattle — Denver
2h 37m stop
19:17 — 00:45
UA1704
United Airlines
Denver — Washington D.C.
|
8h 56m including layover |
Find flight
from$285 |
|
14:24 — 00:45
+1 day
|
14:24 — 18:15
UA2859
United Airlines
Seattle — Denver
1h 2m stop
19:17 — 00:45
UA1704
United Airlines
Denver — Washington D.C.
|
7h 21m including layover |
Find flight
from$222 |
|
17:10 — 05:18
+1 day
|
17:10 — 19:26
UA2482
United Airlines
Seattle — San Francisco
1h 44m stop
21:10 — 05:18
UA2725
United Airlines
San Francisco — Washington D.C.
|
9h 8m including layover |
Find flight
from$328 |
|
09:12 — 09:23
+1 day
|
09:10 — 14:25
SY282
Sun Country Airlines
Seattle — Minneapolis
5h 20m stop
19:50 — 23:08
G4246
Allegiant Air
Minneapolis — Fletcher
8h 52m stop
08:00 — 09:23
G4217
Allegiant Air
Fletcher — Washington D.C.
|
21h 11m including layover |
Find flight
from$211 |
|
17:14 — 08:22
+1 day
|
17:14 — 20:05
UA2397
United Airlines
Seattle — Los Angeles
50m stop
20:55 — 05:08
UA2397
United Airlines
Los Angeles — Newark
1h 51m stop
07:29 — 08:51
UA4434
United Airlines
Newark — Washington D.C.
|
12h 8m including layover |
Find flight
from$630 |
Flight Information
Below we will explain in detail what the flights cost on the destination from Seattle to Washington D.C. depends on and how to choose the most interesting flight option for you.
Distance between Seattle and Washington D.C. is 3735 miles. Time difference between the cities is 3h. Airplanes depart 00:20 to 23:59 from 3 Seattle airports and arrive 00:20 to 23:59 to 2 Washington D.C. airports. Average flight time is 4h 59m.
- The fastest flight 4h 57m
- Average flight time 4h 59m
- The earliest flight 00:20
- The latest flight 23:59
- Distance 2321 ml
The cheapest months to travel to Washington D.C. are june (from 113 $), may (from 121 $), july (from 124 $).
The most expensive months are september (from 140 $), august (from 126 $), july (from 124 $).
What is the lowest airfare Seattle to Washington D.C.?
The cheapest plane ticket found by our users is $126. This airfare is for economy class on one-way F93406 flight by Frontier Airlines for August 15, 2025 which leaves Seattle-Tacoma Intl in Seattle at 06:25 am and arrives at Washington D.C. Ronald Reagan at 21:57.
Popular Airlines on the Route
The flight Seattle — Washington D.C. is served by 5 regular airlines and 2 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 9 departures per week at the price of from $ 140 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 5050.
Direct flights
There are 12 nonstop flights on the route. The fastest direct flight is AS367 by Alaska Airlines takes 4h 57m and the cheapest is F93406 by Frontier Airlines for $140.
- AS - Alaska Airlinesfrom $140Find
- HA - Hawaiian Airlinesfrom $159Find
- UA - United Airlinesfrom $211Find
Connecting Flights
There are 28 flights with layovers on the route. The fastest connecting flight is AS429 by Alaska Airlines takes 6h 52m and the cheapest is F93406 by Frontier Airlines for $126.
- AS - Alaska Airlinesfrom $389Find
- F9 - Frontier Airlinesfrom $126Find
- SY - Sun Country Airlinesfrom $211Find
- HA - Hawaiian Airlinesfrom $187Find
- UA - United Airlinesfrom $209Find
Airports
You can fly from Seattle to Washington D.C. from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).
Seattle airports
- Boeing Field International Airport-BFIFind
- Seattle-Tacoma Intl-SEAfrom $126Find
- Kenmore Air Harbor SPB-LKEFind
Washington D.C. airports
- Dulles International-IADFind
- Ronald Reagan-DCAFind
Airplanes
There are flights to Washington D.C. from Seattle by 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
Top Domestic Destinations from Seattle
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Top International Destinations from Seattle
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
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How to book a plane ticket yourself?

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