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United Airlines flights from Washington, D.C. to Seattle (WAS - SEA)

WAS — SEA
May 4 — May 111
From?
To?
Sat 5/4
Sat 5/11
1 adult, Economy
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Cheapflights users flying from Washington, D.C. to Seattle on United Airlines typically fly into Seattle/Tacoma Intl and depart from Washington, D.C. Dulles Intl. Select your dates above for pricing.

United Airlines flights from Washington, D.C. to Seattle in 2024

Find detailed information about United Airlines flights from Washington, D.C. to Seattle. Explore the options provided by United Airlines to plan your journey from Washington, D.C. to Seattle. Data last updated April 29, 2024.

Popular in

June

Cheapest in

January

Average price (all airlines)

$398

One-way from

$139

Round-trip from

$283
Highest demand for flights from Washington, D.C. to Seattle/Tacoma Intl; 24% potential price increase.
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Best time to find cheap flights from Washington, D.C. to Seattle/Tacoma Intl; 4% potential price drop.
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Average price for all Washington, D.C. to Seattle/Tacoma Intl flights (one-way and round-trip).
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Cheapest one-way United Airlines flight from Washington, D.C. to Seattle/Tacoma Intl
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Cheapest round-trip United Airlines flight from Washington, D.C. to Seattle/Tacoma Intl
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  • Can I get a flight from Washington, D.C. to Seattle on United Airlines for under $400?

    Cheapflights currently has 50 WAS-SEA flights for under $400. Flights to Seattle will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.

  • How do most travelers feel about United Airlines?

    The average rating from 4,123 United Airlines reviews by Cheapflights users is 6.2 (out of a maximum rating of 10). If you are considering flying WAS-SEA with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to Seattle with United Airlines.

Cheapest United Airlines flights from Washington, D.C. to Seattle

Discover the cheapest flight options specifically offered by United Airlines for travel from Washington, D.C. to Seattle. Compare prices and availability to find the most affordable fares for your desired travel dates. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 2,944,896 searches. The data was last updated on April 29, 2024.
Sat 5/2510:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Tue 5/2810:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 4/28$283
Pick Dates
Wed 5/296:15 pmIAD - SEA
1 stop9h 31mUnited Airlines
Wed 6/1212:45 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 4/28$286
Pick Dates
Sat 5/2510:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Mon 5/2710:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 4/28$289
Pick Dates

Direct flights from Washington, D.C. to Seattle on United Airlines

Discover the cheapest flight options specifically offered by United Airlines for travel from Washington, D.C. to Seattle. Compare prices and availability to find the most affordable fares for your desired travel dates. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 2,944,896 searches. The data was last updated on April 29, 2024.
Tue 6/1110:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Fri 6/1411:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 4/29$283
Pick Dates
Thu 10/38:30 amIAD - SEA
Nonstop5h 48mUnited Airlines
Mon 10/78:05 amSEA - IAD
Nonstop5h 05mUnited Airlines
Deal found 4/28$289
Pick Dates
Sun 6/910:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Wed 6/1211:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 4/28$301
Pick Dates

Last minute deals on Cheapflights

Explore last-minute flight deals on United Airlines for various destinations, including Washington, D.C. to Seattle. Discover attractive deals on flights departing soon. Keep an eye on the latest last-minute deals to find great opportunities for spontaneous travel. Please note that prices are subject to change and availability may vary. Data last updated April 29, 2024 and based on user searches. In the last 7 days, Cheapflights users made a total of 2,944,896 searches.
Mon 5/63:00 pmBWI - SEA
1 stop10h 53mUnited Airlines
Wed 5/85:00 amSEA - BWI
2 stops13h 29mUnited Airlines
Deal found 4/28$407
Pick Dates
Sat 5/46:20 amBWI - SEA
2 stops14h 48mUnited Airlines
Sun 5/55:00 amSEA - BWI
1 stop7h 08mUnited Airlines
Deal found 4/27$418
Pick Dates
Sat 5/46:20 amBWI - SEA
2 stops14h 48mUnited Airlines
Sat 5/1111:16 amSEA - BWI
1 stop8h 29mUnited Airlines
Deal found 4/28$419
Pick Dates

One-way United Airlines flights to Seattle from Washington, D.C.

Search for one-way flight options from Washington, D.C. to Seattle specifically provided by United Airlines. Find affordable one-way fares from United Airlines and compare prices with other airlines. These prices are based on average fares users found. In the last 7 days, Cheapflights users made a total of 2,944,896 searches. The data was last updated on April 29, 2024.
Tue 5/2810:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 4/28$139
Pick Dates
Mon 6/1010:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 4/28$145
Pick Dates
Wed 5/296:15 pmIAD - SEA
1 stop9h 31mUnited Airlines
Deal found 4/28$148
Pick Dates

Average price of United Airlines flights from Washington, D.C. to Seattle

Plan your United Airlines flight from Washington, D.C. to Seattle by taking into account the cheapest months to travel. The average price of a one-way United Airlines flight from Washington, D.C. to Seattle is currently $144 while a round-trip flight costs $291. Price data was last updated on April 21, 2024.

Currently, the most affordable month to book a United Airlines flight from Washington, D.C. to Seattle in December, with an average price of $244. Conversely, traveling with United Airlines from Washington, D.C. to Seattle in July will be the most expensive, with an average cost of $408. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

January

$247

February

$254

March

$288

April

$295

May

$317

June

$407

July

$408

August

$343

September

$278

October

$257

November

$258

December

$244

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

41 - 66.2 °F

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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Fly from Washington, D.C. to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on April 29, 2024.

Delta flights from Washington, D.C. to Seattle/Tacoma Intl
Alaska Airlines flights from Washington, D.C. to Seattle/Tacoma Intl

See what others are saying about United Airlines

Read reviews and see what other travelers are saying about their experiences with United Airlines. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing United Airlines for your next flight. Reviews last updated April 29, 2024.
United Airlines
7.4
Good
11,202 reviews
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Overview

Crew

8.1

Comfort

7.2

Food

6.7

Entertainment

7.1

Boarding

7.7
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