Cheap Flights from Chicago (CHI) to Seattle (SEA)

Compare Chicago to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

Book the best Seattle fare with no extra fees

Flight deals from Chicago to Seattle

Looking for a cheap last-minute deal or the best round-trip flight from Chicago to Seattle? Find the lowest prices on one-way and round-trip tickets right here.

Don’t miss a great deal

Stay one step ahead. Find the best value travel with the latest deals, tips and news.

You can unsubscribe at any time. Read our Privacy Policy for more info.

Find the cheapest month to fly from Chicago to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Seattle flights are currently cheapest in June.

Direct flights from Chicago to Seattle

Alternative Chicago to Seattle routes

Looking for the cheapest, fastest or easiest route from Chicago to Seattle? You could fly into the following airports instead.

Chicago to Seattle: Flight information

The things to know before you go.
Cheapest flight found$137
Cheapest month to flyJune
Average flight time4 hrs, 29 mins
Most popular airlineAlaska Airlines
Average flights per week349

Finding cheap flights from Chicago to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Everett.
The best price we found for a round-trip flight from Chicago to Seattle is $137. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 29 minutes is the average flight time from Chicago to Seattle.
Alaska Airlines, United and Qatar Airways fly direct from Chicago to Seattle.
There are 349 flights per week flying from Chicago to Seattle, as of May 2024.
The cheapest month to fly from Chicago to Seattle is usually June.
If you're flying from Chicago, the cheapest airport near Seattle is Seattle / Tacoma International – which is 12.1 miles away from the center of Seattle. We've found flights to this airport from $137.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Seattle on Tuesday, June 4, 2024.
Yes – the average flight time is 4 hours and 29 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 53°F. August is typically the warmest month in Seattle, when it usually averages around 73°F. You can expect the least rain in July. The coldest month is December, with temperatures averaging 33°F. The rainiest month is November.
The cheapest airline that flies to Seattle is Spirit Airlines, and the cheapest airline that flies to Seattle Boeing Fld Airport is Alaska Airlines.

The journey from the windy lakeside metropolis of Chicago to the mountainous landscape of Seattle is a considerable trek: a 30 hour trip, if you were driving. More than 2,000 miles separate these two great cities, and the average direct flight takes four hours and fifteen minutes in the air

American Airlines, United, and Alaska all have robust schedules of weekly nonstop flights between Chicago O’Hare (ORD) and Seattle. If you like, it’s also possible to catch direct flights from Chicago Midway Airport (MDW) to Seattle with Southwest.

Making your way to Chicago’s airports

Chicago O’Hare(ORD) is the largest airport in the state and a vital hub for the entire country. The four terminals, 1, 2, 3, and 5, all see a massive volume of travelers passing through on any given day. It’s wise to allocate some extra time in case of security backups. Public transportation offers a direct rail link between The Loop and O’Hare, which runs 24/7, and this can often be the fastest option, especially during rush hour. The CTA Blue Line leaves every 15 minutes, and the fare is only $2.50. You can expect the trip to take about 35 minutes.

Chicago Midway Airport(MDW) is a much cosier airport with a single terminal, and it’s also a lot closer to downtown. If you want to use public transit, you’re in luck, because MDW also benefits from a direct rail connection. Hop on a CTA Orange Line train from The Loop, and you can be in the airport in less than half an hour. It’s worth noting that once you get to the Midway Airport stop, there’s a walk of 10 to 15 minutes through a tunnel to the main terminal building.

Arriving in Seattle

From the wind to the rain. Seattle is famous for precipitation, but most of the time it’s of a milder sort than you’ll find in Chicago. Seattle is a gorgeously walkable city, and many of its best attractions revolve around outdoor life. Our best tip? Kayaking is an amazing way to explore, and rentals and tours are plentiful.

If you really don’t want to get rained on, there are plenty of wonderful indoor options, too. Make time to travel up the Space Needle Spire for some of the best views you’ll ever see, drop into one of Seattle’s amazing museums, such as the Museum of History and Industry. You can also wander the mostly-covered halls of Pike Place Market, which are stuffed with amazing artisan food.

Let Skyscanner track down the cheapest tickets for your trip from Chicago to Seattle. Our free airfare comparison app is quick and easy to use, and can find you some amazing deals.


More flight options

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.