Question 1

How long does a flight from Washington, D.C. to Seattle take?

Accepted Answer

Direct flights from Washington, D.C. generally make it to Seattle in 5h 40m. The flying distance between the two cities is 2,299 miles. Visit our flight page for the latest deals!>/a>

Question 2

How many flights are there between Washington, D.C. Dulles Intl Airport and Seattle per day?

Accepted Answer

Each day, there are 8 direct flights that take off from Washington, D.C. Dulles Intl Airport and land in Seattle, with an average flight time of 5h 48m. The most common departure time is 22:00 and most flights take off in the morning. Each week, there are 56 flights and there are the same number of flights each day (8). Visit our flight page for the latest deals!>/a>

Question 3

What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Seattle?

Accepted Answer

In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Seattle was £138 for a one-way ticket and £267 for a return. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 4

Which airlines fly most frequently between Washington, D.C. and Seattle?

Accepted Answer

Washington, D.C. and Seattle are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (28 flights per week), Alaska Airlines (21 flights per week), and Delta (7 flights per week). Visit our flight page for the latest deals!>/a>

Question 5

Which airports will I be using when flying from Washington, D.C. to Seattle?

Accepted Answer

On your way to Seattle, you’ll fly out from Washington, D.C. Dulles Intl. You’ll be landing at Seattle/Tacoma Intl. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 6

What’s the earliest departure time from Washington, D.C. to Seattle?

Accepted Answer

Early birds can take the earliest flight from Washington, D.C. Dulles Intl Airport at 06:30 and will be landing in Seattle at 09:17.

Question 7

What’s the latest departure time from Washington, D.C. to Seattle?

Accepted Answer

If you prefer to fly at night, the latest flight from Washington, D.C. Dulles Intl Airport to Seattle jets off at 22:14 and lands at 01:04.

Question 8

Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to Seattle?

Accepted Answer

Hawaiian Airlines, Alaska Airlines, and Delta offer inflight Wi-Fi service on the Washington, D.C. to Seattle flight route.

Question 9

Which aircraft models fly most regularly from Washington, D.C. to Seattle?

Accepted Answer

The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Washington, D.C. to Seattle flight route.

Question 10

Which airline alliances offer flights from Washington, D.C. to Seattle?

Accepted Answer

oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington, D.C. and Seattle, with Star Alliance being the most commonly used for this route.

Question 11

On which days can I fly direct from Washington, D.C. to Seattle?

Accepted Answer

There are direct flights from Washington, D.C. to Seattle on a daily basis.

Question 12

How can I get from the Sea-Tac Airport (SEA) to my hotel in downtown Seattle?

Accepted Answer

There are a few options to get you from the airport to your hotel in downtown Seattle. One option is the subway system that picks up passengers on the 4th floor of the parking garage. There are a couple of bus services at the Sea-Tac Airport. King County Metro travels to various parts of the city of Seattle while Sound Transit takes passengers to the outlining cities of Bellevue and Renton. The buses pick up by the subway station.

Question 13

Where can I park my car long-term at the Washington Dulles Airport?

Accepted Answer

Very close to the terminal, there is a parking garage and a terminal parking lot. There is also an economy lot a little further away. A shuttle service will take you from the economy lot to the main terminal of the airport.

Question 14

What restaurants are at the Washington Dulles Airport?

Accepted Answer

There are a couple of bars, a pizzeria, and a burger place where you can dine. Some well-known restaurants in this airport include Auntie Anne's, Carrabba's Italian Grill, Chick-Fil-A, and Jersey Mike's Subs.

Question 15

What lounges are at these two airports?

Accepted Answer

Both airports have lounges where you can enjoy some quiet time. These lounges also offer complimentary drinks and snacks. They are sponsored by airlines, credit card companies, or the airport. At the Washington Dulles Airport, there is a United Airlines, British Airways, and an Air France lounge. The Sea-Tac Airport has lounges affiliated with United Airlines, American Express, Delta Airlines, and Alaska Airlines.

Question 16

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Seattle?

Accepted Answer

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Seattle is February, where tickets cost £255 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is £380 and £351 respectively.

Question 17

How does KAYAK find such low prices on flights from Washington, D.C. to Seattle?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Seattle. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 18

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Seattle?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 19

What is the Hacker Fare option on flights from Washington, D.C. to Seattle?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to Washington, D.C. with another airline. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 20

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Seattle?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/Washington-D-C-Dulles-Intl-IAD/Seattle-Tacoma-Intl-SEA'>Visit our flight page for the latest deals!>/a>

Question 21

Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport and Seattle?

Accepted Answer

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 22

Which airlines provide the cheapest flights from Washington, D.C. to Seattle?

Accepted Answer

In the past 3 days, the cheapest return tickets from Washington, D.C. to Seattle were found on Alaska Airlines (£196) and United Airlines (£204).

Question 23

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Seattle?

Accepted Answer

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Seattle, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Low season	February
High season	July
Cheapest flight	£102

IAD - SEA

£102 Find Cheap Flights from Washington, D.C. to Seattle

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KAYAK's insights & trends for Washington, D.C. to Seattle flights

Get data-powered insights and trends into flights from Washington, D.C. to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Seattle?

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Seattle is February, where tickets cost £255 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is £380 and £351 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Seattle?

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Seattle, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Which airlines provide the cheapest flights from Washington, D.C. to Seattle?

In the past 3 days, the cheapest return tickets from Washington, D.C. to Seattle were found on Alaska Airlines (£196) and United Airlines (£204).

Which airlines fly most frequently between Washington, D.C. and Seattle?

Washington, D.C. and Seattle are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (28 flights per week), Alaska Airlines (21 flights per week), and Delta (7 flights per week).

Which cabin class options are there for flights between Washington, D.C. Dulles Intl Airport and Seattle?

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How many flights are there between Washington, D.C. Dulles Intl Airport and Seattle per day?

How long does a flight from Washington, D.C. to Seattle take?

Direct flights from Washington, D.C. generally make it to Seattle in 5h 40m. The flying distance between the two cities is 2,299 miles.

What’s the earliest departure time from Washington, D.C. to Seattle?

Early birds can take the earliest flight from Washington, D.C. Dulles Intl Airport at 06:30 and will be landing in Seattle at 09:17.

What’s the latest departure time from Washington, D.C. to Seattle?

If you prefer to fly at night, the latest flight from Washington, D.C. Dulles Intl Airport to Seattle jets off at 22:14 and lands at 01:04.

Good to know - Cheap tickets from Washington, D.C. to Seattle

When to book flights from Washington, D.C. to Seattle

Flights from Washington, D.C. to Seattle: the best tips from KAYAK users' own experiences

FAQs for booking Washington, D.C. to Seattle flights

How can I get from the Sea-Tac Airport (SEA) to my hotel in downtown Seattle?

Where can I park my car long-term at the Washington Dulles Airport?

Very close to the terminal, there is a parking garage and a terminal parking lot. There is also an economy lot a little further away. A shuttle service will take you from the economy lot to the main terminal of the airport.

What restaurants are at the Washington Dulles Airport?

There are a couple of bars, a pizzeria, and a burger place where you can dine. Some well-known restaurants in this airport include Auntie Anne's, Carrabba's Italian Grill, Chick-Fil-A, and Jersey Mike's Subs.

What lounges are at these two airports?

What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Seattle?

In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Seattle was £138 for a one-way ticket and £267 for a return.

Which airports will I be using when flying from Washington, D.C. to Seattle?

On your way to Seattle, you’ll fly out from Washington, D.C. Dulles Intl. You’ll be landing at Seattle/Tacoma Intl.

Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to Seattle?

Hawaiian Airlines, Alaska Airlines, and Delta offer inflight Wi-Fi service on the Washington, D.C. to Seattle flight route.

Which aircraft models fly most regularly from Washington, D.C. to Seattle?

The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Washington, D.C. to Seattle flight route.

Which airline alliances offer flights from Washington, D.C. to Seattle?

oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington, D.C. and Seattle, with Star Alliance being the most commonly used for this route.

On which days can I fly direct from Washington, D.C. to Seattle?

There are direct flights from Washington, D.C. to Seattle on a daily basis.

How does KAYAK find such low prices on flights from Washington, D.C. to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Seattle.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Washington, D.C. is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights from Washington, D.C. to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to Washington, D.C. with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Seattle

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