Cheap Flights from Washington to Seattle

Cheapest flights from Washington to Seattle

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Washington to Seattle. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$205

Alaska Airlines

Direct flight

5h 36m

09/25/2026

The cheapest one-way flight from Washington to Seattle departs on 09/25/2026, is operated by Alaska Airlines and costs $205

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Washington to Seattle

The fastest flight

5h 36m

Fastest flight from Washington to Seattle takes 5h 36m

Direct flights

Several times a week

There are direct flights on this route 5 days a week: Mo, We, Th, Fr, and Sa

Earliest flight

6:03 AM

Latest flight

6:14 PM

Direct flights count

31

Distance

3736km

Timezone difference

3h

The distance between Washington and Seattle is 3736km (2316 miles). There are 31 direct flights from Washington to Seattle. The time difference between Washington and Seattle is 3h. Flights from Washington begin at 6:03 AM. The latest flight from Washington departs at 6:14 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Washington to Seattle by month

The minimum one-way ticket price from Washington to Seattle is $147 (October 2026), while the maximum is $212 (September 2026). On average, a ticket costs $174–$376.

October 2026

Lowest price

on average:

$147

September 2026

Highest price

on average:

$212

Avg Price

Price dynamics

Ticket prices for Washington — Seattle are higher at the start and end of the period but lowest in the middle. This creates a convenient window for booking at a reduced price.

Cheaper and more expensive periods

Prices fall from September 2026 to October 2026 (30%), then rise from October 2026 to November 2026 (+11%). The best period is October 2026–November 2026 ($156), the most expensive is September 2026–October 2026 ($180).

Best time to buy

The best time to buy is October 2026–November 2026, when prices are at their lowest. This can save you up to 13% compared to the expensive months (September 2026–October 2026).

Price predictability

Monthly price variation is 15.7%. On this route, your departure date noticeably affects the cost, and choosing wisely can lead to real savings.

Airlines operating on route

The route Washington — Seattle is served by several airlines: Alaska Airlines and Frontier Airlines. This gives passengers more freedom in choosing flights. You can consider not only the price but also schedules, baggage policies, and onboard service. Our service compares all offers so you can find tickets from $205 and choose the most convenient option. Thanks to airline competition, you may also find promotional fares or special offers, helping you save even more. Plan your trip in advance and choose the best flights without overpaying.

Alaska Airlines

starting at $205

Frontier Airlines

starting at $265

Non-stop flights from Washington to Seattle

A non-stop flight is the most convenient and comfortable way to fly from Washington to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.

Washington — Seattle

WAS — SEA

09/26/2026

Departure

Direct flight

AS001

starting at $405

Washington — Seattle

WAS — SEA

09/28/2026

Departure

Direct flight

AS003

starting at $468

Washington — Seattle

WAS — SEA

09/30/2026

Departure

Direct flight

AS737

starting at $423

Washington — Seattle

WAS — SEA

10/01/2026

Departure

Direct flight

AS003

starting at $451

Washington — Seattle

WAS — SEA

10/09/2026

Departure

Direct flight

AS409

starting at $337

Washington — Seattle

WAS — SEA

07/02/2027

Departure

Direct flight

AS003

starting at $548

Washington — Seattle

WAS — SEA

09/25/2026

Departure

Direct flight

AS375

starting at $640

Schedule of direct flights from Washington to Seattle

There are most likely no direct flights on the Washington — Seattle route

Washington airports overview

Ronald Reagan National Airport

•

DCA

5km

Convenient for downtown Washington, D.C. and the National Mall, offering primarily domestic and short-haul flights with direct Metro access and quick transfers across the Potomac.

Washington Dulles International Airport

•

IAD

37km

•

Seattle airports overview

Boeing Field International Airport

•

BFI

8km

Seattle-Tacoma International Airport

•

SEA

19km

Primary air hub for the Seattle metropolitan area and Puget Sound, offering extensive domestic and international routes, multiple terminals, light rail and shuttle connections, and convenient access to downtown Seattle.

•

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from Washington to Seattle?

The cheapest flight ticket from Washington to Seattle according to data for the last 48 hours costs $205

When is the best time to buy air tickets on the route Washington — Seattle?

Often the best time to buy tickets from Washington to Seattle is 2 months before departure.

When is the cheapest time of year to fly from Washington to Seattle?

Based on statistics over the past years, the lowest prices for flights from Washington to Seattle can be found flying in these months: October, November, September.

How long does it take to fly from Washington to Seattle?

The fastest flights from Washington to Seattle start from 5 hours 36 minutes in the air.

Which airline can fly direct from Washington to Seattle?

The following airlines operate direct flights on the route Washington — Seattle: Alaska Airlines

Special offers and sales on air tickets from Washington to Seattle

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Washington to Seattle

Alternative routes

Baltimore ➜ Seattle•Charlottesville ➜ Seattle•Hagerstown ➜ Seattle•Lancaster ➜ Seattle•Philadelphia ➜ Seattle•Richmond ➜ Seattle•Washington ➜ Bellingham•Washington ➜ Boise•Washington ➜ Eugene•Washington ➜ Spokane•Washington ➜ Everett•Washington ➜ Kamloops•Washington ➜ Yakima•Washington ➜ Kelowna•Washington ➜ Abbotsford•Washington ➜ Calgary

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Cheapest one way flight

$205

Alaska Airlines

Direct flight

5h 36m

09/25/2026

The cheapest one-way flight from Washington to Seattle departs on 09/25/2026, is operated by Alaska Airlines and costs $205

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Washington to Seattle

The fastest flight