Question 1

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

Accepted Answer

Hawaiian Airlines, Alaska Airlines, and Delta can get you from Seattle to Washington, D.C. in just under 5h 03m. Your travel time will be generally consistent. Airlines will cover a distance of 2321 mi. Most flights are nonstop.

Question 2

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

Accepted Answer

The cheapet airlines for a one-way flight from Seattle to Washington, D.C. are Hawaiian Airlines (£109), Sun Country Air (£109), and Southwest (£110).

Question 3

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

Accepted Answer

To ensure you get the cheapest price possible for a flight from Seattle to Washington, D.C., you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Question 4

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Seattle to Washington, D.C. (average of £599). Flying from Seattle to Washington, D.C. in July is currently the most expensive (average of £947). 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 5

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

Accepted Answer

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

Question 6

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

Accepted Answer

The most flights from SEA to WAS are scheduled on a Tuesday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches 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 8

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 9

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

Accepted Answer

The cheapest flight price from Seattle to Washington, D.C. is £132. On average you can expect to pay £312. The most popular route, (Seattle/Tacoma Intl - Washington, D.C. Dulles Intl), can usually be booked for £202.

Question 10

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

Accepted Answer

Consider Austrian Airlines (82%), Brussels Airlines (82%) or Lufthansa (78%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Washington, D.C..

Question 11

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

Accepted Answer

Flights from Seattle to Washington, D.C. are found to be more expensive on Thursday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

Question 12

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 £354.

Question 13

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

Accepted Answer

The best pricing can be found in the month of September. Prices to Washington, D.C. from Seattle average £288. You can even find prices in September for less than £288, as users have found deals to Washington, D.C. from as low as £152. The month of December appears to be one of the more expensive times to travel to Washington, D.C. from Seattle. Flying in the targeted month can save you up to 30%.

Question 14

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

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Washington, D.C. as you normally would.

Question 15

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

Accepted Answer

Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Washington, D.C. from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Washington, D.C. should be relatively easy as there are 11 daily outbound flights to Washington, D.C. from 0 different airlines.

Question 16

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 holiday packages that include both flights and hotel.

Question 17

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 18

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 19

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

Accepted Answer

Cheapflights helps you search for flights from Seattle to Washington, D.C. via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 20

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

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Washington, D.C..

Question 21

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

Accepted Answer

Need flexible booking options for your flight to Washington, D.C. from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 22

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

Accepted Answer

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Seattle today and book when prices fit your budget.

Round-trip from	£197
One-way from	£109
Popular in	December
Cheapest in	September
Average price	£286
Good round-trip deal	£364 or less
Good one-way deal	£306 or less

Cheap flights from Seattle to Washington, D.C. from £109

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 23/11. 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 Monday or Tuesday 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 19 agosto 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 19 agosto 2025.

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

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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 return 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 19 agosto 2025.

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

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.?

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

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.?

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

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 19 agosto 2025.