Cheap flights from Seattle to Washington, D.C.

Flight deals from Seattle to Washington, D.C.

Below you can see the best deals on flights Seattle — Washington, D.C. for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 5 September, from $122.

Top 10 cheap flights from Seattle to Washington, D.C.

Seattle — Washington, D.C.

19:06—12:51

5 Sep 2026

14 h 45 m

1 stop

Seattle — Washington, D.C.

19:06—22:52

31 Aug 2026

24 h 46 m

2 stops

Seattle — Washington, D.C.

21:45—06:20

11 Sep 2026

29 h 35 m

1 stop

Seattle — Washington, D.C.

19:06—17:14

2 Sep 2026

19 h 8 m

2 stops

Seattle — Washington, D.C.

19:06—12:51

2 Sep 2026

14 h 45 m

1 stop

Seattle — Washington, D.C.

19:06—16:59

2 Sep 2026

18 h 53 m

1 stop

Seattle — Washington, D.C.

19:06—21:59

2 Sep 2026

23 h 53 m

1 stop

Seattle — Washington, D.C.

21:45—06:20

9 Sep 2026

29 h 35 m

1 stop

Seattle — Washington, D.C.

21:29—08:04

31 Aug 2026

31 h 35 m

1 stop

Seattle — Washington, D.C.

20:48—17:14

2 Sep 2026

17 h 26 m

2 stops

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Seattle — Washington, D.C. flight

Looking for cheap flights from Seattle to Washington, D.C.? Compare fares from different airlines, check the flight schedule and travel time — and book your Seattle — Washington, D.C. ticket online at the best price.

The route has direct flights — around 224 flights per week, flights are operated by Alaska Airlines, Hawaiian Airlines, American Airlines, United Airlines and 2 more airlines, a nonstop flight takes about 4 h 56 min, the distance between the cities is around 3,745 km.

Planning your trip? You may find our Washington, D.C. travel guide, how to get from the airport into town and Washington, D.C. weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

from $122Min. price

SeptemberCheapest

JunePeak season

YesDirect flights

3,745 kmDistance

4 h 56 minTravel time

6Airlines

224 / wkFlights

Flight schedule from Seattle to Washington, D.C.

The table shows direct flights from Seattle to Washington, D.C. on the selected date. The flight takes approximately 4 h 56 min. Regular flights are operated by Alaska Airlines, Hawaiian Airlines, American Airlines and United Airlines. Departures from Seattle-Tacoma International Airport and Paine Field airports, arrivals at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today

Any time

Last update: 14 Aug 2026

Airline

Flight

Departure

Arrival

Duration

Days

Status

Below is a calendar of the lowest flight ticket prices for Seattle — Washington, D.C. by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $122 in September, and the most expensive are around $241 in June. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

Prices by month

Average one-way fares from Seattle to Washington, D.C. by month. Tickets are usually cheapest in January (around $162) and priciest in June (about $248) — use the table and chart below to pick the best time to fly.

Month	Average price	Level	Month	Average price	Level	Month	Average price	Level
Jan	$162	low	May	$210	medium	Sep	$210	medium
Feb	$181	medium	Jun	$248	high	Oct	$172	low
Mar	$239	high	Jul	$239	high	Nov	$172	low
Apr	$243	high	Aug	$220	medium	Dec	$201	medium

Some values are estimated based on seasonality.

When to fly

Weather in Washington, D.C.: it is warmest in July (up to 32 °C on average) and coolest in January (around 7 °C). The driest month is October.

Tickets are usually cheapest in September and most expensive in June. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Washington, D.C.

Dry and wet days · Washington, D.C.

Wind speed and direction · Washington, D.C.

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How to get the best deal on a Seattle — Washington, D.C. ticket

Book ahead: fares for Seattle — Washington, D.C. are usually lower 3–8 weeks before departure than at the last minute.
Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
Seattle is served by more than one airport — compare fares and travel time to each before you book.
The cheapest month to fly to Washington, D.C. is usually September — plan your trip around it if your dates are flexible.
Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Flights on the Seattle — Washington, D.C. route are operated by 6 airlines; Alaska Airlines runs the most flights (around 43% of all flights). Compare carriers, flight shares and schedules below.

Alaska AirlinesAS
32x/week
WebsiteFleet: 31545M pax/year
- Direct flight SEA → IAD13x/week
  Duration
  5h 3m
  Days
  MTWTFSS
- Direct flight SEA → BWI9x/week
  Duration
  5h 3m
  Days
  MTWTFSS
- Direct flight SEA → DCA9x/week
  Duration
  5h 16m
  Days
  MTWTFSS
42.9%Open →
Hawaiian AirlinesHA
13x/week
WebsiteFleet: 7511M pax/year
- Direct flight SEA → DCA13x/week
17.4%
American AirlinesAA
10x/week
WebsiteFleet: 965211M pax/year
- Direct flight SEA → IAD10x/week
  Duration
  5h 1m
  Days
  MTWTFSS
13.8%Open →
United AirlinesUA
9x/week
WebsiteFleet: 956165M pax/year
- Direct flight SEA → IAD9x/week
  Duration
  5h 6m
  Days
  MTWTFSS
12.1%Open →
DeltaDL
7x/week
WebsiteFleet: 986190M pax/year
- Direct flight SEA → IAD5x/week
  Duration
  5h 1m
  Days
  MTWTFSS
- Direct flight SEA → DCA2x/week
  Duration
  5h 1m
  Days
  MTWTFSS
8.9%Open →
Qatar AirwaysQR
4x/week
WebsiteFleet: 26640M pax/year
- Direct flight SEA → IAD4x/week
4.9%Open →

Cities and airports on the Seattle — Washington, D.C. route

Flights Seattle — Washington, D.C. depart from Seattle-Tacoma International Airport and Paine Field and arrive at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Seattle

SEA

United States

About the city How to get there Weather All about the country United States

Arrival

Washington, D.C.

WAS

United States

About the city How to get there Weather All about the country United States

Departure airports

Seattle-Tacoma International AirportSEA
About the airport
Paine FieldPAE
About the airport

Arrival airports

Washington Dulles International AirportIAD
About the airport
Baltimore/Washington International Thurgood Marshall AirportBWI
About the airport
Ronald Reagan National AirportDCA
About the airport

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Frequently asked questions about the Seattle — Washington, D.C. flight

How long is the flight from Seattle to Washington, D.C.?

A nonstop Seattle — Washington, D.C. flight takes about 4 h 56 min — the distance between the cities is around 3,745 km.

How far is it from Seattle to Washington, D.C.?

The distance from Seattle to Washington, D.C. is about 3,745 km, which a nonstop flight covers in around 4 h 56 min.

Are there direct flights from Seattle to Washington, D.C.?

Yes, there are nonstop flights Seattle — Washington, D.C. — around 224 flights per week.

Which airlines fly from Seattle to Washington, D.C.?

Airlines operating Seattle — Washington, D.C. include Alaska Airlines, Hawaiian Airlines, American Airlines, United Airlines, Delta. See the full list with schedules in the "Airlines" section on this page.

Which airports do Seattle — Washington, D.C. flights use?

Flights from Seattle depart from Seattle-Tacoma International Airport, Paine Field, and arrive at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport, Ronald Reagan National Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Seattle to Washington, D.C.?

The price of a Seattle — Washington, D.C. ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in June. Tickets typically cost between $122 and $241. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Seattle — Washington, D.C.?

Flights Seattle — Washington, D.C. are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Seattle to Washington, D.C.?

To catch a low fare Seattle — Washington, D.C., book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Cheap flights from Seattle to Washington, D.C.

Flight deals from Seattle to Washington, D.C.

Top 10 cheap flights from Seattle to Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Top 10 direct flights from Seattle to Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle to Washington, D.C.: departing soon

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

Seattle — Washington, D.C.

About the Seattle — Washington, D.C. flight

Facts about this route

Flight schedule from Seattle to Washington, D.C.

Flight ticket prices by day: Seattle — Washington, D.C.

Prices by month

When to fly

Temperature · Washington, D.C.

Dry and wet days · Washington, D.C.

Wind speed and direction · Washington, D.C.

We'll let you know if you need a visa

How to get the best deal on a Seattle — Washington, D.C. ticket

Cities and airports on the Seattle — Washington, D.C. route

Seattle

Washington, D.C.

Interesting articles about Washington, D.C.

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Frequently asked questions about the Seattle — Washington, D.C. flight

Where else you can fly from Seattle

Where else you can fly from Washington, D.C.

Other popular routes

Other popular routes