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

WAS — SEA
May 7 — May 141
From?
To?
Tue 5/7
Tue 5/14
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 May 2, 2024.

Popular in

June

Cheapest in

January

Average price (all airlines)

$478

One-way from

$145

Round-trip from

$260
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 $500?

    Cheapflights currently has 50 WAS-SEA flights for under $500. 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 4,108 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 2,899,487 searches. The data was last updated on May 2, 2024.
Wed 5/2910:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Wed 6/510:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/1$277
Pick Dates
Wed 5/2910:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Thu 5/3012:45 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/1$288
Pick Dates
Thu 5/3010:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Sat 6/18:01 amSEA - IAD
Nonstop5h 12mUnited Airlines
Deal found 5/1$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 2,899,487 searches. The data was last updated on May 2, 2024.
Wed 5/2910:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Wed 6/510:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/1$277
Pick Dates
Mon 6/35:23 pmIAD - SEA
Nonstop5h 47mUnited Airlines
Wed 6/511:29 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/1$283
Pick Dates
Tue 6/48:40 amIAD - SEA
Nonstop5h 47mUnited Airlines
Sat 6/810:25 pmSEA - IAD
Nonstop4h 59mUnited Airlines
Deal found 5/1$288
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 May 2, 2024 and based on user searches. In the last 7 days, Cheapflights users made a total of 2,899,487 searches.
Tue 5/710:15 amBWI - SEA
1 stop8h 16mUnited Airlines
Mon 5/134:19 pmSEA - BWI
1 stop9h 59mUnited Airlines
Deal found 5/1$324
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Thu 5/94:14 pmBWI - SEA
1 stop9h 48mUnited Airlines
Sat 5/115:00 amSEA - BWI
1 stop7h 08mUnited Airlines
Deal found 5/1$412
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Wed 5/86:30 amBWI - SEA
1 stop9h 49mUnited Airlines
Thu 5/97:10 pmSEA - BWI
1 stop7h 08mUnited Airlines
Deal found 5/2$424
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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 2,899,487 searches. The data was last updated on May 2, 2024.
Sat 5/2510:15 pmIAD - SEA
Nonstop5h 44mUnited Airlines
Deal found 4/30$145
Pick Dates
Tue 6/46:15 pmIAD - SEA
1 stop9h 31mUnited Airlines
Deal found 5/1$153
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Tue 5/143:00 pmBWI - SEA
1 stop10h 53mUnited Airlines
Deal found 5/1$156
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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 $151 while a round-trip flight costs $283. Price data was last updated on April 28, 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 $245. 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

$294

May

$320

June

$406

July

$408

August

$343

September

$278

October

$257

November

$258

December

$245

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 May 2, 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 May 2, 2024.
United Airlines
7.4
Good
11,159 reviews
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Overview

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.2

Food

6.7
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