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

Flights overview

Useful information for finding cheap flights from Chicago to Seattle and booking your next trip

Cheapest round-trip flights	$230	Frontier 1 stop 30 hr Thu, Jul 9 — Wed, Jul 15	The cheapest round-trip flight from Chicago to Seattle is currently $230
Cheapest one-way flight	$111	Frontier 1 stop 30 hr Wed, Jul 8	The cheapest one-way flight from Chicago to Seattle is currently $111
Cheapest nonstop flights	$355	American Nonstop 5 hr Thu, May 21 — Wed, May 27	The cheapest nonstop round-trip flight from Chicago to Seattle is currently $355
Last-minute weekend getaway	$335	Frontier 1 stop 24 hr Thu, May 7 — Mon, May 11	The cheapest last-minute weekend getaway from Chicago to Seattle is currently $335
Cheapest business class flights	$488	Frontier 1 stop 23 hr Thu, Jul 30 — Wed, Aug 5	The cheapest business class round-trip flight from Chicago to Seattle is currently $488

Fastest flight	4 hr 30 min	The fastest nonstop flight from Chicago to Seattle takes 4 hr 30 min
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Chicago to Seattle is typically September. The most expensive month to fly is typically July.

September Cheapest	Typical prices: $150–250
July Most expensive	Typical prices: $200–295

Popular airlines from Chicago to Seattle

Southwest

Nonstop

from $355

Typical price: $215–460

14 weekly nonstop flights

MDW - SEA Every day

1709 weekly connecting flights

MDW, ORD - SEA Every day
United

Nonstop

from $355

Typical price: $195–435

33 weekly nonstop flights

ORD - SEA Every day

204 weekly connecting flights

ORD - SEA Every day
American

Nonstop

from $355

Typical price: $205–440

33 weekly nonstop flights

ORD - SEA Every day

130 weekly connecting flights

ORD - SEA Every day
Alaska

Nonstop

from $355

Typical price: $200–455

34 weekly nonstop flights

ORD - SEA Every day

32 weekly connecting flights

ORD - SEA Every day
Delta

Nonstop

from $355

Typical price: $200–480

21 weekly nonstop flights

ORD - SEA Every day

587 weekly connecting flights

MDW, ORD - SEA Every day
Frontier

from $230

Typical price: $215–550

20 weekly connecting flights

MDW, ORD - SEA Every day

Popular airports near Chicago

Chicago O'Hare International Airport (ORD)

Chicago United States 26 min 16 mi
Chicago Midway International Airport (MDW)

Chicago United States 25 min 9 mi
Milwaukee Mitchell International Airport (MKE)

Milwaukee United States 1 hr 23 min 75 mi
Indianapolis International Airport (IND)

Indianapolis United States 2 hr 58 min 165 mi

Popular airports near Seattle

Seattle-Tacoma International Airport (SEA)

Seattle United States 18 min 11 mi
Portland International Airport (PDX)

Portland United States 2 hr 44 min 140 mi
Paine Field (PAE)

Everett United States 31 min 21 mi
King County International Airport - Boeing Field (BFI)

Seattle United States 11 min 5 mi

Frequently asked questions about flying from Chicago to Seattle

The cheapest flights from Chicago to Seattle are usually in September. Typical ticket prices in September range from $150 to $250.

The cheapest round-trip flight from Chicago to Seattle recently found on Google Flights was with Frontier from $230. The cheapest one-way flight was with Frontier from $111.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Chicago to Seattle is $355, flying from Jul 16 to Jul 22.
The cheapest United flight from Chicago to Seattle is $355, flying from May 28 to Jun 3.
The cheapest American flight from Chicago to Seattle is $355, flying from May 21 to May 27.
The cheapest Alaska flight from Chicago to Seattle is $355, flying from May 28 to Jun 3.
The cheapest Delta flight from Chicago to Seattle is $355, flying from May 28 to Jun 3.
The cheapest Frontier flight from Chicago to Seattle is $230, flying from Jul 9 to Jul 15.

The cheapest round-trip flight from Chicago to Seattle starts at $230 from Thu, Jul 9 to Wed, Jul 15. The cheapest one-way flight starts at $111 and departs on Wed, Jul 8.

4 hr 30 min is the shortest flight time from Chicago to Seattle.

Most visitors come May–Sep, a period encompassing events such as the Seattle International Film Festival (May); Seafair (Jul), a summer festival including boat races, marathons and parades; and Bumbershoot (Sep), an international music and arts festival. Rainy season is Nov–May, though rain is possible year-round.

It's easy to use Google Flights to find the cheapest days to fly from Chicago to Seattle.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What counts as the best airline for your flights from Chicago to Seattle really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Chicago to Seattle.

In terms of nonstop flights, Alaska is the most popular. Alaska offers 34 nonstop flights and 32 connecting flights per week. Alaska flies from Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) .

In terms of flights, Southwest is the most popular. Southwest offers 14 nonstop flights and 1,709 connecting flights per week. Southwest flies from Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) .

Other popular airlines flying from Chicago to Seattle are:

United offers 33 nonstop flights and 204 connecting flights per week. United flies from Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) .
American offers 33 nonstop flights and 130 connecting flights per week. American flies from Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) .
Delta offers 21 nonstop flights and 587 connecting flights per week. Delta flies from Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) .
Frontier offers 20 connecting flights per week. Frontier flies from Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) .

The number of connecting flights refers to distinct flights with at least one stop between Chicago and Seattle.

The cheapest round-trip flight from Chicago to Seattle recently found on Google Flights was with Frontier from $230. The cheapest one-way flight was with Frontier from $111.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Chicago to Seattle is $355, flying from Jul 16 to Jul 22.
The cheapest United flight from Chicago to Seattle is $355, flying from May 28 to Jun 3.
The cheapest American flight from Chicago to Seattle is $355, flying from May 21 to May 27.
The cheapest Alaska flight from Chicago to Seattle is $355, flying from May 28 to Jun 3.
The cheapest Delta flight from Chicago to Seattle is $355, flying from May 28 to Jun 3.
The cheapest Frontier flight from Chicago to Seattle is $230, flying from Jul 9 to Jul 15.

Southwest, Alaska, American, United and Delta fly direct from Chicago to Seattle.

There are 14 Southwest direct flights from Chicago to Seattle per week. Flights are available every day.
There are 33 United direct flights from Chicago to Seattle per week. Flights are available every day.
There are 33 American direct flights from Chicago to Seattle per week. Flights are available every day.
There are 34 Alaska direct flights from Chicago to Seattle per week. Flights are available every day.
There are 21 Delta direct flights from Chicago to Seattle per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

The cheapest last-minute deal between Chicago and Seattle at price $335 is offered by Frontier from Thu, May 7 to Mon, May 11.

Southwest, Alaska, American, United and Delta fly direct from Chicago to Seattle.

There are 14 Southwest direct flights from Chicago to Seattle per week. Flights are available every day.
There are 33 United direct flights from Chicago to Seattle per week. Flights are available every day.
There are 33 American direct flights from Chicago to Seattle per week. Flights are available every day.
There are 34 Alaska direct flights from Chicago to Seattle per week. Flights are available every day.
There are 21 Delta direct flights from Chicago to Seattle per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

There are direct flights from Chicago to Seattle on a daily basis.

The cheapest direct (nonstop) round-trip flights between Chicago and Seattle start at $355 from Thu, May 21 to Wed, May 27 with American.

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Chicago to Seattle, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

The cheapest business class round-trip flights between Chicago and Seattle start at $488 from Thu, Jul 30 to Wed, Aug 5 with Frontier.

The cheapest economy class round-trip flights between Chicago and Seattle start at $230 from Thu, Jul 9 to Wed, Jul 15.

To book business class trips from Chicago to Seattle, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

The best last-minute getaway deal for the next weekend between Chicago and Seattle starts at $335 from Thu, May 7 to Mon, May 11 with Frontier.

The cheapest last-minute deal between Chicago and Seattle at price $335 is offered by Frontier from Thu, May 7 to Mon, May 11.

To find last-minute flight deals from Chicago to Seattle, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.