Cheap Flights from Seattle, WA to Washington D.C., DC from $78

One way Round trip

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Return flight: Washington D.C. – Seattle

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On Cheapflightsplus.com you will find 19 direct and 203 connecting flights from Seattle to Washington D.C.. You can compare airfare deals from 7 airlines and multiple travel sites from $78, 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

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $78 (one-way), $134 (round-trip).

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Best Flights from Seattle to Washington D.C. Today

Take a look at the list of non stop flights and flights with layovers from Seattle to Washington D.C. with the lowest price of $78. The fastest direct flight takes 4h 57m and the fastest connecting – 6h 50m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $103 Find flight	16:20 Seattle Seattle-Tacoma Intl	00:20+1 день Washington D.C. Dulles International	5h 0m	Alaska Airlines	AS348
from $115 Find flight	23:30 Seattle Seattle-Tacoma Intl	07:27+1 день Washington D.C. Dulles International	4h 57m	Hawaiian Airlines	HA6718
from $115 Find flight	16:00 Seattle Seattle-Tacoma Intl	23:59 Washington D.C. Dulles International	4h 59m	Hawaiian Airlines	HA6717
from $115 Find flight	13:58 Seattle Seattle-Tacoma Intl	21:59 Washington D.C. Ronald Reagan	5h 1m	Hawaiian Airlines	HA6702
from $115 Find flight	08:34 Seattle Seattle-Tacoma Intl	16:43 Washington D.C. Ronald Reagan	5h 9m	Hawaiian Airlines	HA6704
from $117 Find flight	09:18 Seattle Seattle-Tacoma Intl	17:15 Washington D.C. Dulles International	4h 57m	Alaska Airlines	AS408
from $117 Find flight	09:15 Seattle Seattle-Tacoma Intl	17:13 Washington D.C. Dulles International	4h 58m	Alaska Airlines	AS406
from $138 Find flight	22:55 Seattle Seattle-Tacoma Intl	06:58+1 день Washington D.C. Dulles International	5h 3m	United Airlines	UA684
from $154 Find flight	09:18 Seattle Seattle-Tacoma Intl	17:15 Washington D.C. Dulles International	4h 57m	Hawaiian Airlines	HA6724
from $78 Find flight	06:25 Seattle Seattle-Tacoma Intl	16:57 Washington D.C. Ronald Reagan	7h 32m layover 1h 18m - Denver	Frontier Airlines	F93406 F9688
from $82 Find flight	20:01 Seattle Seattle-Tacoma Intl	12:04+1 день Washington D.C. Ronald Reagan	13h 3m layover 6h 46m - Denver	Frontier Airlines	F91176 F9686
from $82 Find flight	20:01 Seattle Seattle-Tacoma Intl	16:59+1 день Washington D.C. Ronald Reagan	17h 58m layover 11h 35m - Denver	Frontier Airlines	F91176 F9688
from $82 Find flight	20:01 Seattle Seattle-Tacoma Intl	21:57+1 день Washington D.C. Ronald Reagan	22h 56m layover 16h 36m - Denver	Frontier Airlines	F91176 F9690
from $88 Find flight	15:11 Seattle Seattle-Tacoma Intl	05:55+1 день Washington D.C. Dulles International	11h 44m layover 4h 34m - Las Vegas	Frontier Airlines	F94830 F94278
from $104 Find flight	07:00 Seattle Seattle-Tacoma Intl	20:59 Washington D.C. Ronald Reagan	10h 59m layover 3h 0m - Los Angeles	Hawaiian Airlines	HA6763 HA6706
from $111 Find flight	07:00 Seattle Seattle-Tacoma Intl	20:59 Washington D.C. Ronald Reagan	10h 59m layover 3h 0m - Los Angeles	Alaska Airlines	AS797 AS6

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on May 21, 2025

Flight Schedule Seattle (Washington) to Washington D.C. (District of Columbia)

Full flight schedule will help you in detecting at what time planes fly from Seattle to Washington D.C.. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
08:00 — 16:10	08:00 — 16:10 UA2217 United Airlines Seattle — Washington D.C.	5h 10m	Find flight from$138
08:00 — 16:11	08:00 — 16:11 UA2398 United Airlines Seattle — Washington D.C.	5h 11m	Find flight from$153
08:00 — 16:11	08:00 — 16:11 UA1873 United Airlines Seattle — Washington D.C.	5h 11m	Find flight from$155
08:34 — 16:43	08:34 — 16:43 HA6704 Hawaiian Airlines Seattle — Washington D.C.	5h 9m	Find flight from$115
08:34 — 16:43	08:34 — 16:43 AS4 Alaska Airlines Seattle — Washington D.C.	5h 9m	Find flight from$118
09:15 — 17:13	09:15 — 17:13 AS406 Alaska Airlines Seattle — Washington D.C.	4h 58m	Find flight from$117
09:18 — 17:15	09:18 — 17:15 AS408 Alaska Airlines Seattle — Washington D.C.	4h 57m	Find flight from$117
09:18 — 17:15	09:18 — 17:15 HA6724 Hawaiian Airlines Seattle — Washington D.C.	4h 57m	Find flight from$154
13:00 — 20:57	13:00 — 20:57 UA2275 United Airlines Seattle — Washington D.C.	4h 57m	Find flight from$153
13:58 — 21:59	13:58 — 21:59 HA6702 Hawaiian Airlines Seattle — Washington D.C.	5h 1m	Find flight from$115
13:58 — 21:59	13:58 — 21:59 AS2 Alaska Airlines Seattle — Washington D.C.	5h 1m	Find flight from$118
16:00 — 23:59	16:00 — 23:59 HA6717 Hawaiian Airlines Seattle — Washington D.C.	4h 59m	Find flight from$115
16:20 — 00:20 +1 day	16:20 — 00:20 AS348 Alaska Airlines Seattle — Washington D.C.	5h	Find flight from$103
22:05 — 06:02 +1 day	22:05 — 06:02 UA2402 United Airlines Seattle — Washington D.C.	4h 57m	Find flight from$153
22:55 — 06:58 +1 day	22:55 — 06:58 UA684 United Airlines Seattle — Washington D.C.	5h 3m	Find flight from$138
23:20 — 07:17 +1 day	23:20 — 07:17 UA2019 United Airlines Seattle — Washington D.C.	4h 57m	Find flight from$153
23:30 — 07:27 +1 day	23:30 — 07:27 HA6718 Hawaiian Airlines Seattle — Washington D.C.	4h 57m	Find flight from$115
23:30 — 07:27 +1 day	23:30 — 07:27 AS367 Alaska Airlines Seattle — Washington D.C.	4h 57m	Find flight from$118
23:30 — 07:36 +1 day	23:30 — 07:36 AS307 Alaska Airlines Seattle — Washington D.C.	5h 6m	Find flight from$118
00:20 — 11:55	00:20 — 06:28 UA1832 United Airlines Seattle — Chicago 2h 24m stop 08:52 — 11:55 UA1068 United Airlines Chicago — Washington D.C.	8h 35m including layover	Find flight from$151
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$153
05:07 — 15:06	05:07 — 08:48 UA2269 United Airlines Seattle — Denver 52m stop 09:40 — 15:06 UA1234 United Airlines Denver — Washington D.C.	6h 59m including layover	Find flight from$151
05:20 — 16:06	05:20 — 06:17 HA6833 Hawaiian Airlines Seattle — Portland 1h 43m stop 08:00 — 16:06 HA6710 Hawaiian Airlines Portland — Washington D.C.	7h 46m including layover	Find flight from$136
06:25 — 16:57	09:19 — 13:04 F93406 Frontier Airlines Seattle — Denver 1h 18m stop 11:40 — 16:59 F9688 Frontier Airlines Denver — Washington D.C.	7h 32m including layover	Find flight from$78
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$82
07:00 — 20:59	07:00 — 09:45 HA6763 Hawaiian Airlines Seattle — Los Angeles 3h stop 12:48 — 20:59 HA6706 Hawaiian Airlines Los Angeles — Washington D.C.	10h 59m including layover	Find flight from$104
07:00 — 20:59	07:00 — 09:45 AS797 Alaska Airlines Seattle — Los Angeles 3h stop 12:48 — 20:59 AS6 Alaska Airlines Los Angeles — Washington D.C.	10h 59m including layover	Find flight from$111
11:11 — 21:07	11:11 — 14:58 UA1049 United Airlines Seattle — Denver 42m stop 15:40 — 21:07 UA798 United Airlines Denver — Washington D.C.	6h 56m including layover	Find flight from$147
15:11 — 05:55 +1 day	15:11 — 17:50 F94830 Frontier Airlines Seattle — Las Vegas 4h 34m stop 22:24 — 05:55 F94278 Frontier Airlines Las Vegas — Washington D.C.	11h 44m including layover	Find flight from$88
17:35 — 05:24 +1 day	17:35 — 19:47 UA2482 United Airlines Seattle — San Francisco 1h 23m stop 21:10 — 05:24 UA2351 United Airlines San Francisco — Washington D.C.	8h 49m including layover	Find flight from$147
18:33 — 11:53 +1 day	18:33 — 23:59 SY286 Sun Country Airlines Seattle — Minneapolis 8h 31m stop 08:30 — 11:53 SY1693 Sun Country Airlines Minneapolis — Washington D.C.	14h 20m including layover	Find flight from$144
18:40 — 11:43 +1 day	18:18 — 23:35 SY286 Sun Country Airlines Seattle — Minneapolis 8h 27m stop 11:30 — 14:49 SY223 Sun Country Airlines Minneapolis — Washington D.C.	14h 3m including layover	Find flight from$129
19:00 — 05:22 +1 day	19:00 — 22:51 UA1218 United Airlines Seattle — Denver 1h 19m stop 23:59 — 05:24 UA1924 United Airlines Denver — Washington D.C.	7h 22m including layover	Find flight from$147
19:13 — 06:50 +1 day	17:59 — 20:10 AS1318 Alaska Airlines Seattle — San Francisco 1h 21m stop 21:41 — 05:55 AS455 Alaska Airlines San Francisco — Washington D.C.	8h 37m including layover	Find flight from$127
20:01 — 12:04 +1 day	19:10 — 23:12 F91176 Frontier Airlines Seattle — Denver 6h 46m stop 06:40 — 12:07 F9686 Frontier Airlines Denver — Washington D.C.	13h 3m including layover	Find flight from$82
20:01 — 16:59 +1 day	19:10 — 23:12 F91176 Frontier Airlines Seattle — Denver 11h 35m stop 11:30 — 16:59 F9688 Frontier Airlines Denver — Washington D.C.	17h 58m including layover	Find flight from$82
15:58 — 10:22 +1 day	15:20 — 17:51 NK2328 Spirit Airlines Seattle — Las Vegas 6h 9m stop 00:27 — 05:55 NK2250 Spirit Airlines Las Vegas — Nashville 1h 43m stop 12:00 — 14:44 G4353 Allegiant Air Nashville — Washington D.C.	15h 24m including layover	Find flight from$141

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on May 21, 2025

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 5h.

The fastest flight 4h 57m
Average flight time 5h
The earliest flight 00:20
The latest flight 23:59
Distance 2321 ml

The cheapest months to travel to Washington D.C. are december (from 83 $), november (from 91 $), may (from 91 $).

The most expensive months are august (from 122 $), july (from 120 $), january (from 106 $).

What is the lowest airfare Seattle to Washington D.C.?

The cheapest plane ticket found by our users is $78. This airfare is for economy class on one-way F93406 flight by Frontier Airlines for June 6, 2025 which leaves Seattle-Tacoma Intl in Seattle at 06:25 am and arrives at Washington D.C. Ronald Reagan at 16:57.

Economy class

$78

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Business class

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First class

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Popular Airlines on the Route

The flight Seattle — Washington D.C. is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 32 departures per week at the price of from $ 103 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 3816.

Direct flights

There are 19 nonstop flights on the route. The fastest direct flight is HA6718 by Hawaiian Airlines takes 4h 57m and the cheapest is F93406 by Frontier Airlines for $103.

AS - Alaska Airlines

from $103

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HA - Hawaiian Airlines

from $115

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UA - United Airlines

from $138

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Connecting Flights

There are 203 flights with layovers on the route. The fastest connecting flight is UA2269 by United Airlines takes 6h 50m and the cheapest is F93406 by Frontier Airlines for $78.

AS - Alaska Airlines

from $111

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F9 - Frontier Airlines

from $78

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SY - Sun Country Airlines

from $129

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TK - Turkish Airlines

from $876

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HA - Hawaiian Airlines

from $104

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UA - United Airlines

from $147

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NK - Spirit Airlines

from $141

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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-BFI

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Seattle-Tacoma Intl-SEA

from $78
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Kenmore Air Harbor SPB-LKE

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Washington D.C. airports

Dulles International-IAD

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Ronald Reagan-DCA

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Airplanes

There are flights to Washington D.C. from Seattle by 7 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Seattle

You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.

Seattle — Washington D.C.

from $78

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Seattle — Las Vegas

from $62

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Seattle — New York

from $180

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Seattle — Chicago

from $73

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Seattle — Phoenix

from $67

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Seattle — San Diego

from $74

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Seattle — Los Angeles

from $53

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Seattle — Denver

from $243

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Seattle — Dallas

from $72

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Seattle — Boston

from $63

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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.

Seattle — Tokyo

from $77

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Seattle — London

from $70

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Seattle — Vancouver

from $57

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Seattle — Cancun

from $63

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Seattle — Paris

from $66

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Seattle — Toronto

from $64

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Seattle — Calgary

from $76

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Seattle — Mumbai

from $80

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Seattle — Montreal

from $68

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Seattle — Amsterdam

from $64

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How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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