Question 1

Which airport typically offers the quickest layover for flights from Seattle to Washington, D.C.?

Accepted Answer

Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 0h 55m.

Question 2

What’s the fastest layover option from Seattle to Washington, D.C.?

Accepted Answer

Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 6h 50m.

Question 3

What’s the top layover airport for flights from Seattle to Washington, D.C.?

Accepted Answer

Denver (DEN) – chosen by Cheapflights users on 86% of one-stop itineraries from Seattle to Washington, D.C. on Cheapflights.

Question 4

What’s the cheapest layover airport for flights from Seattle to Washington, D.C.?

Accepted Answer

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of C$ 383.

Question 5

What is the cheapest airline to fly from Seattle to Washington, D.C. round-trip?

Accepted Answer

Currently priced at C$ 264, Alaska Airlines will fly you from Seattle to Washington, D.C. and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. This flight start at 50% lower than the current average price 3 months from now.

Question 6

What are the cheapest airlines to fly from Seattle to Washington, D.C. one-way?

Accepted Answer

For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as C$ 204. Users have also found prices from C$ 206 and C$ 211 on Southwest and Sun Country Air, respectively.

Question 7

How far ahead should I book a flight from Seattle to Washington, D.C.?

Accepted Answer

Booking 60 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 8

What is the cheapest month to book a flight from Seattle to Washington, D.C.?

Accepted Answer

Currently, February is the cheapest month in which you can book a flight from Seattle to Washington, D.C. (average of C$ 256). Flying from Seattle to Washington, D.C. in October is currently the most expensive (average of C$ 352). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 9

What is the cheapest day to fly from Seattle to Washington, D.C.?

Accepted Answer

Travelers seeking maximum savings on their Seattle to Washington, D.C. flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 10

Weekly flight availability from Seattle to Washington, D.C.

Accepted Answer

The most flights from SEA to WAS are scheduled on a Thursday (42 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (25 on average).

Question 11

E

Accepted Answer

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Question 12

E

Accepted Answer

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Question 13

What are the cheapest flights from Seattle to Washington, D.C.?

Accepted Answer

Looking for the cheapest flight from Seattle to Washington, D.C.? While on average our users pay C$ 879, our data indicates the cheapest price to be C$ 389. The most popular route (Seattle/Tacoma Intl - Washington, D.C. Reagan-National), is priced around C$ 363.

Question 14

What are the most reliable airlines from Seattle to Washington, D.C.?

Accepted Answer

Before booking your flight to Washington, D.C. from Seattle, check out the most reliable airlines to get you to your destination on time: Austrian Airlines (85%), Brussels Airlines (85%), Lufthansa( 83%).

Question 15

What is the cheapest day to fly round-trip from Seattle to Washington, D.C.?

Accepted Answer

Travellers have found that booking a Friday departure is the best way to save up to 82% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

Question 16

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

Accepted Answer

Find a great deal and save up to 83% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Washington, D.C. within the next two weeks, with the cheapest ticket starting at C$ 661.

Question 17

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

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from Seattle in September are about C$ 538 on average during September, but can be found for as low as C$ 284.

Question 18

What is the cheapest time of day to fly from SEA to WAS?

Accepted Answer

Unlike at noon, when flights are generally more expensive, you can save up to 70% on flights from Seattle to Washington, D.C. by exploring options for tickets in the afternoon.

Question 19

What airport do you fly from for flights from Seattle to Washington, D.C.?

Accepted Answer

Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Washington, D.C.. You should not have trouble finding flights to Washington, D.C. from Seattle/Tacoma Intl; the airport handles an average of 34 outbound flights to Washington, D.C. per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Seattle airport to Washington, D.C.. It is only a 18.4 km journey to Seattle/Tacoma Intl (SEA) from Seattle’s city centre.

Question 20

Can I find deals for flights from Seattle to Washington, D.C. that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Seattle to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 21

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

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Washington, D.C..

Question 22

Can I find deals for business class flights from Seattle to Washington, D.C.?

Accepted Answer

Yes. Cheapflights offers flight deals from Seattle to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 23

How does Cheapflights help users find flights from Seattle to Washington, D.C.?

Accepted Answer

When you search for this flight from Seattle to Washington, D.C., Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 24

Why should you use Cheapflights to find cheap flight tickets from Seattle to Washington, D.C.?

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Washington, D.C. for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 25

Can Cheapflights find flights from Seattle to Washington, D.C. with no change fees?

Accepted Answer

Yes, we can. To see specific flights from Seattle to Washington, D.C. with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Question 26

Can Cheapflights notify me if prices for flights from Seattle to Washington, D.C. become cheaper?

Accepted Answer

Yes, Cheapflights offers price alerts on Seattle to Washington, D.C. flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

Round-trip from	C$ 358
One-way from	C$ 204
Popular in	December
Cheapest in	September
Average price	C$ 534
Good round-trip deal	C$ 205 or less

Cheap flights from Seattle to Washington, D.C. from C$ 204

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Washington, D.C. are usually found in September or July, booked 60 days in advance, depart on a Saturday or Thursday and return on a Monday

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Cheapest flights from Seattle to Washington, D.C.Explore the most affordable flight options available from Seattle to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2025.

Explore the most affordable flight options available from Seattle to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2025.

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Best time to book a flight from Seattle to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Seattle with our price prediction graph.

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Everything you need to know about your flight from Seattle to Washington, D.C.

How far ahead should I book a flight from Seattle to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Washington, D.C.. Price data was last updated on 8 August 2025.

What is the cheapest month to book a flight from Seattle to Washington, D.C.?

What is the cheapest time of day to fly from SEA to WAS?

Find hourly flight availability from Seattle to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 August 2025.

What is the cheapest day to fly from Seattle to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Washington, D.C.. Price data was last updated on 10 August 2025.

Weekly flight availability from Seattle to Washington, D.C.

What’s the top layover airport for flights from Seattle to Washington, D.C.?

Share of one-stop round-trip flights from Seattle to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Seattle to Washington, D.C.?

Average round-trip fare for 1-stop flights from Seattle to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Seattle to Washington, D.C.?

Shortest average travel time for 1-stop one-way flights from Seattle to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Seattle to Washington, D.C.?

Average layover duration for 1-stop one-way flights from Seattle to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Seattle to Washington, D.C., such as Delta and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Seattle to Washington, D.C.?

What is the cheapest airline to fly from Seattle to Washington, D.C. round-trip?

What are the cheapest airlines to fly from Seattle to Washington, D.C. one-way?

What are the most reliable airlines from Seattle to Washington, D.C.?

What are the cheapest flights from Seattle to Washington, D.C.?

Can I find deals for flights from Seattle to Washington, D.C. that include hotel bookings?

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

Can I find deals for business class flights from Seattle to Washington, D.C.?

What is the cheapest month to book a flight from Seattle to Washington, D.C.?

Travelling to a place near Washington, D.C.?

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How does Cheapflights help users find flights from Seattle to Washington, D.C.?

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Can Cheapflights find flights from Seattle to Washington, D.C. with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Washington, D.C. become cheaper?

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Cheapest flights from Seattle to Washington, D.C.
Explore the most affordable flight options available from Seattle to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2025.