HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

United Airlines flights from Chicago to Seattle (CHI - SEA)

CHI — SEA
5月 7 — 5月 141
From?
To?
週二 5/7
週二 5/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheapflights users flying from Chicago to Seattle on United Airlines typically fly into Seattle/Tacoma Intl and depart from Chicago O'Hare Intl. Select your dates above for pricing.

United Airlines flights from Chicago to Seattle in 2024

Find detailed information about United Airlines flights from Chicago to Seattle. Explore the options provided by United Airlines to plan your journey from Chicago to Seattle. Data last updated 5月 2, 2024.

Popular in

July

Cheapest in

January

Average price (all airlines)

$328

One-way from

$105

Round-trip from

$149
Highest demand for flights from Chicago to Seattle/Tacoma Intl; 26% potential price increase.
Search Deals
Best time to find cheap flights from Chicago to Seattle/Tacoma Intl; 4% potential price drop.
Search Deals
Average price for all Chicago to Seattle/Tacoma Intl flights (one-way and round-trip).
Search Deals
Cheapest one-way United Airlines flight from Chicago to Seattle/Tacoma Intl
Search Deals
Cheapest round-trip United Airlines flight from Chicago to Seattle/Tacoma Intl
Search Deals

  • Can I get a flight from Chicago to Seattle on United Airlines for under $400?

    Cheapflights users have found 24 United Airlines flights for under $400 on the CHI-SEA route. Prices on flights to Seattle from Chicago can vary based on many factors including dates. To look at price based on your preferred dates, click here.

  • How do most travelers feel about United Airlines?

    Cheapflights users who travel with United Airlines (a popular airline from Chicago to Seattle) have rated them a 8.0/10. This rating comes from 9,115 reviews. If you are looking to travel CHI-SEA, search your dates above.

Cheapest United Airlines flights from Chicago to Seattle

Discover the cheapest flight options specifically offered by United Airlines for travel from Chicago 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 5月 2, 2024.
週五 5/177:52 pmORD - SEA
Nonstop4h 42mUnited Airlines
週二 5/212:21 pmSEA - ORD
Nonstop3h 58mUnited Airlines
Deal found 5/1$209
Pick Dates
週四 5/165:00 amORD - SEA
1 stop6h 47mUnited Airlines
週一 5/207:15 amSEA - ORD
Nonstop4h 00mUnited Airlines
Deal found 5/1$218
Pick Dates
週四 5/167:45 pmORD - SEA
Nonstop4h 42mUnited Airlines
週一 5/204:41 pmSEA - ORD
Nonstop3h 58mUnited Airlines
Deal found 5/1$247
Pick Dates

Direct flights from Chicago to Seattle on United Airlines

Discover the cheapest flight options specifically offered by United Airlines for travel from Chicago 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 5月 2, 2024.
週六 8/176:30 pmORD - SEA
Nonstop4h 39mUnited Airlines
週二 8/205:00 pmSEA - ORD
Nonstop4h 00mUnited Airlines
Deal found 5/1$149
Pick Dates
週三 10/27:19 amORD - SEA
Nonstop4h 33mUnited Airlines
週日 10/65:15 pmSEA - ORD
Nonstop4h 00mUnited Airlines
Deal found 4/30$179
Pick Dates
週五 9/67:45 pmORD - SEA
Nonstop4h 37mUnited Airlines
週三 9/1111:59 pmSEA - ORD
Nonstop4h 01mUnited Airlines
Deal found 5/1$207
Pick Dates

Last minute deals on Cheapflights

Explore last-minute flight deals on United Airlines for various destinations, including Chicago 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 5月 2, 2024 and based on user searches. In the last 7 days, Cheapflights users made a total of 2,899,487 searches.
週三 5/810:45 amORD - SEA
Nonstop4h 34mUnited Airlines
週三 5/157:15 amSEA - ORD
Nonstop4h 00mUnited Airlines
Deal found 5/1$294
Pick Dates
週三 5/84:10 pmORD - SEA
1 stop8h 43mUnited Airlines
週三 5/157:15 amSEA - ORD
Nonstop4h 00mUnited Airlines
Deal found 5/1$303
Pick Dates
週四 5/91:00 pmORD - SEA
Nonstop4h 39mUnited Airlines
週五 5/102:21 pmSEA - ORD
Nonstop3h 58mUnited Airlines
Deal found 5/1$379
Pick Dates

One-way United Airlines flights to Seattle from Chicago

Search for one-way flight options from Chicago 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 5月 2, 2024.
週三 5/157:45 pmORD - SEA
Nonstop4h 42mUnited Airlines
Deal found 5/1$105
Pick Dates
週一 7/297:10 amORD - SEA
Nonstop4h 39mUnited Airlines
Deal found 5/1$142
Pick Dates
週四 5/167:45 pmORD - SEA
Nonstop4h 42mUnited Airlines
Deal found 5/1$143
Pick Dates

Average price of United Airlines flights from Chicago to Seattle

Plan your United Airlines flight from Chicago to Seattle by taking into account the cheapest months to travel. The average price of a one-way United Airlines flight from Chicago to Seattle is currently $130 while a round-trip flight costs $178. Price data was last updated on April 28, 2024.

Currently, the most affordable month to book a United Airlines flight from Chicago to Seattle in December, with an average price of $245. Conversely, traveling with United Airlines from Chicago 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).

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Chicago 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 5月 2, 2024.

Alaska Airlines flights from Chicago to Seattle/Tacoma Intl
Delta flights from Chicago 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 5月 2, 2024.
United Airlines
7.4
Good
11,159 reviews
Check prices
Overview

Entertainment

7.1

Food

6.7

Boarding

7.7

Crew

8.1

Comfort

7.2
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines