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Cheap Flights from Washington D.C. to Seattle starting at CNY 85

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from Washington D.C. to Seattle

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.
Cheapest Airlines flying from Washington D.C. to Seattle

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From S$ 85
American Airlines
From S$ 130
Sun Country Airlines
From S$ 154
Delta Air Lines
From S$ 172
Jetblue Airways
From S$ 197
Southwest Airlines
From S$ 204
United Airlines
From S$ 206
Allegiant Air
From S$ 221
Southern Airways Express, Llc
From S$ 240
Alaska Airlines
From S$ 410
ANA airlines

Find more flights and airlines

Alternative Routes from Washington D.C. to Seattle

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Washington D.C. to Seattle.

  • Cheapest
    Frontier Airlines
    DCA
    07:00
    27h 20m
    1 transfer
    SEA
    07:20
    Ronald Reagan Washington National Airport - Seattle-Tacoma International Airport
    Sun, Apr 28Frontier Airlines
    S$ 85
  • Alaska Airlines
    IAD
    19:09
    5h 51m
    Direct
    SEA
    22:00
    Dulles International Airport - Seattle-Tacoma International Airport
    Wed, Apr 24Alaska Airlines
    S$ 410
  • Alaska Airlines
    IAD
    19:09
    5h 51m
    Direct
    SEA
    22:00
    Dulles International Airport - Seattle-Tacoma International Airport
    Wed, Apr 24Alaska Airlines
    S$ 410
    Find More Flights

Frequently Asked Questions

  • When to buy flight tickets from Washington D.C. (WAS) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to Seattle based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much is a flight from Washington D.C. (WAS) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around S$ 576.
  • How long is a flight from Washington D.C. (WAS) to Seattle (SEA)?

    It takes about 5 hours 49 minutes to fly from Washington D.C. (WAS) to Seattle (SEA).
  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17km, by taxi about 30 minutes.
  • What time does the earliest flight from Washington D.C. to Seattle depart?

    The earliest flight departs from Washington D.C. (IAD) at 07:00 and arrives in Seattle (SEA) at 10:00.
  • What time does the latest flight from Washington D.C. to Seattle depart?

    The latest flight departs from Washington D.C. (DCA) at 17:40 and arrives in Seattle (SEA) at 20:41.
  • What are the most popular airlines that fly from Washington D.C. (WAS) to Seattle (SEA)?

  • What's the most popular airline for direct flights from Washington D.C. (WAS) to Seattle (SEA)?

    Alaska Airlines operates 1 direct flights from Washington D.C. (WAS) to Seattle (SEA).
  • How many airports in Seattle?

How to find a cheap flight from Washington D.C. to Seattle

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Washington D.C. to Seattle. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Find cheapest flight ticket from Washington D.C. to Seattle

Cheapest direct flight price

S$ 84

Cheapest return ticket price

S$ 238

Cheapest month

January

Peak season for travel

July

Flight distance

3,736.07km

Average flight time

5 hours 49 minutes

Popular airline

Alaska Airlines