Skyscanner home

Cheap Flights from Chicago (ORD) to Seattle (SEAA)

Compare Chicago O'Hare International 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 O'Hare International to Seattle

Looking for a cheap last-minute deal or the best return flight from Chicago O'Hare International Airport to Seattle? If you want to travel next month, return fares start from $355. Find the lowest prices on one-way and return tickets right here.
Seattle.$348 per passenger.Departing Thu, 10 Sep, returning Sun, 13 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Thu, 10 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sun, 13 Sep, arriving in Chicago O'Hare International.Price includes taxes and charges.From $348, select.
Seattle.$348 per passenger.Departing Sat, 22 Aug, returning Sat, 29 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Sat, 22 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 29 Aug, arriving in Chicago O'Hare International.Price includes taxes and charges.From $348, select.
Seattle.$349 per passenger.Departing Sun, 14 Jun, returning Tue, 11 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Sun, 14 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 11 Aug, arriving in Chicago O'Hare International.Price includes taxes and charges.From $349, select.
Seattle.$349 per passenger.Departing Tue, 16 Jun, returning Fri, 19 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Tue, 16 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 19 Jun, arriving in Chicago O'Hare International.Price includes taxes and charges.From $349, select.
Seattle.$349 per passenger.Departing Sat, 20 Jun, returning Sat, 4 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Sat, 20 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 4 Jul, arriving in Chicago O'Hare International.Price includes taxes and charges.From $349, select.
Seattle.$353 per passenger.Departing Sat, 22 Aug, returning Sat, 29 Aug.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Chicago O'Hare International on Sat, 22 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Sat, 29 Aug, arriving in Chicago O'Hare International.Price includes taxes and charges.From $353, select.
Seattle.$355 per passenger.Departing Wed, 8 Jul, returning Mon, 13 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Wed, 8 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Mon, 13 Jul, arriving in Chicago O'Hare International.Price includes taxes and charges.From $355, select.
Seattle.$360 per passenger.Departing Mon, 31 Aug, returning Tue, 8 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Mon, 31 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 8 Sep, arriving in Chicago O'Hare International.Price includes taxes and charges.From $360, select.
Seattle.$360 per passenger.Departing Fri, 21 Aug, returning Wed, 14 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Fri, 21 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Wed, 14 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From $360, select.
Seattle.$361 per passenger.Departing Tue, 7 Jul, returning Tue, 4 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Tue, 7 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 4 Aug, arriving in Chicago O'Hare International.Price includes taxes and charges.From $361, select.
Seattle.$368 per passenger.Departing Wed, 11 Nov, returning Wed, 18 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Chicago O'Hare International on Wed, 11 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 18 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From $368, select.
Seattle.$369 per passenger.Departing Mon, 24 Aug, returning Wed, 2 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Chicago O'Hare International on Mon, 24 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 2 Sep, arriving in Chicago O'Hare International.Price includes taxes and charges.From $369, select.
Seattle.$369 per passenger.Departing Fri, 21 Aug, returning Wed, 14 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Chicago O'Hare International on Fri, 21 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 14 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From $369, select.
Seattle.$369 per passenger.Departing Mon, 19 Oct, returning Mon, 26 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Chicago O'Hare International on Mon, 19 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 26 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From $369, select.
Seattle.$369 per passenger.Departing Wed, 9 Sep, returning Mon, 14 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Chicago O'Hare International on Wed, 9 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 14 Sep, arriving in Chicago O'Hare International.Price includes taxes and charges.From $369, select.
Seattle.$370 per passenger.Departing Wed, 23 Sep, returning Sat, 3 Oct.Return flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Wed, 23 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with United departs from Seattle / Tacoma International on Sat, 3 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From $370, select.

Find the cheapest month to fly from Chicago O'Hare International to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago O'Hare International to Seattle flights are currently cheapest in August.
Jun
from $349
Jul
from $355
Aug
from $348
Sep
from $348
Oct
from $369
Nov
from $368
Dec
from $498
Jan
from $498
Feb
from $497
Mar
from $498
Apr
from $500
May
Find prices

Direct flights from Chicago O'Hare International to Seattle

Alternative Chicago O'Hare International to Seattle routes

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

Seattle Lake Union SPB

2km from central Seattle
Closest
Search flights

Seattle Boeing Fld

11km from central Seattle
Search flights

Seattle / Tacoma International

20km from central Seattle
Cheapest
from $348
Search flights

Paine Field

33km from central Seattle
from $631
Search flights

Chicago to Seattle: Flight information

The things to know before you go.
Cheapest flight found$348
Cheapest month to flyAugust
Average flight time4 hrs, 43 mins
Most popular airlineAmerican Airlines
Average flights per week448

Finding cheap flights from Chicago O'Hare International to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Chicago O'Hare International to Seattle is $348. 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 43 minutes is the average flight time from Chicago O'Hare International to Seattle.
American Airlines, Qatar Airways and Alaska Airlines fly direct from Chicago O'Hare International to Seattle.
As of June 2026, there are 448 flights per week flying from Chicago O'Hare International to Seattle.
The cheapest month to fly from Chicago O'Hare International to Seattle is usually August.
If you're flying from Chicago O'Hare International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from $348.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chicago O'Hare International Airport to Seattle on Saturday, 22 August 2026.
Yes – the average flight time is 4 hours and 43 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 June, the average temperature is usually around 14°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Frontier Airlines and Alaska Airlines offer the cheapest flight tickets to Seattle.

Flying from Chicago O'Hare International Airport (ORD) to Seattle: what you need to know

  • Expect to be in the air for 4 hours 5 minutes. On average, that's the duration of a direct flight from Chicago O'Hare International Airport to Seattle.

  • The timezone in Seattle is UTC-8. The city is two hours behind Chicago, where Chicago O'Hare International Airport is located.

  • With 105 flights a week between the two airports, Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) is the busiest route. Alaska Airlines operates the earliest flight at 06:00. If you prefer to get more out of your day before taking off, the latest departure from ORD to SEA is with United Airlines at 21:32.

  • Give yourself plenty of time to make your ORD to Seattle flight. It's generally best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months like July, it's a good idea to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead for an international flight whenever you're travelling during high season in general.

  • Direct Chicago O'Hare International Airport to Seattle tickets are available for booking. Seattle-Tacoma International Airport (SEA) is where you'll arrive.

  • Leading airlines that operate direct flights from Chicago O'Hare International Airport to Seattle include:

  • ORD is about 26 kilometres from central Chicago. If you're driving, catching a taxi or ride-sharing from the centre, it'll take you 30 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 45 minutes.

  • In search of a hotel close to ORD? If you're boarding an early flight from Chicago O'Hare International Airport to Seattle, these accommodation options set you up for a seamless send-off:

  • 70% of flights leaving from Chicago O'Hare International Airport land at their destination on time.

  • ORD's address is 10000 West O'Hare.

How to find the cheapest flights from Chicago O'Hare International Airport (ORD) to Seattle

  • $161 is currently the lowest price for a one-way Chicago O'Hare International Airport to Seattle flight. A return plane ticket starts at $348. These prices may change depending on demand and availability.

  • Booking early is often the key to locking in a cheap flight from ORD to Seattle. Fares tend to rise as demand increases, so the closer your departure date, the more expensive your ticket may be.

  • If you have flexibility with your trip dates, check out the 'Whole month' search tool. It'll show you the lowest price across each month when looking for a Chicago O'Hare International Airport to Seattle ticket.

  • Save time looking for cheap flights from ORD to Seattle by creating a Price Alert. You'll get an email or push notification on the app when a new low fare is offered.

  • Choose your ideal arrival and departure times, airlines and number of stops with our filters. Then, sort the results for your flight from Chicago O'Hare International Airport to Seattle by 'Cheapest,' 'Best' or 'Fastest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to central Seattle takes around 25 minutes to reach by car. The centre is roughly 23 kilometres away.

  • If you're taking public transport, expect a journey time of around 35 minutes.

  • Look into staying at a hotel near SEA if you're coming in on a late flight from Chicago O'Hare International Airport to Seattle. Check in to one of these options and make your first night all about catching up on rest:

  • For the lowest price, book your vehicle from Seattle-Tacoma International Airport about one week in advance of your flight from ORD to Seattle.

Seattle Paine Field International Airport (PAE)

  • The centre of Seattle is located around 40 kilometres from Seattle Paine Field International Airport (PAE). After your flight from Chicago O'Hare International Airport to Seattle has landed and you've made your way to arrivals, the drive should be around 40 minutes.

  • The journey will take about 1 hour 30 minutes on public transport.

  • There are some great places to call home for the night near PAE. Settle in and get cosy after your ORD to Seattle flight at any of these perfectly located options:

  • Avoid the slow-moving lines and paperwork at the rental desk by having everything prearranged. Reserve your ride from PAE in advance so you can simply grab the keys and go.

King County International Airport (BFI)

  • Set your sights on the city centre after your flight from Chicago O'Hare International Airport to Seattle has touched down. Central Seattle is about 11 kilometres from King County International Airport (BFI) and takes roughly 20 minutes to reach by taxi or ride-share.

  • If you're travelling on public transport, the journey time is around 35 minutes.

  • Book a hotel near BFI and go from the plane to your bed in a flash. Whether you have a late ORD to Seattle flight or just want a stress-free arrival, these stays put comfort right within reach:

  • If you're looking for a specific model or make, booking early increases your chances of getting your first choice. Reserve your ride from BFI at least a couple of weeks ahead of your flight from Chicago O'Hare International Airport to Seattle.

Best time to go to Seattle

  • December is the quietest month for flights from Chicago O'Hare International Airport to Seattle, while July is the busiest. Figure out the ideal time to visit Seattle based on whether you want a lively atmosphere or a more laid-back vibe.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Book your Chicago O'Hare International Airport to Seattle plane ticket then if that's your idea of comfortable weather.

  • If you like cooler conditions, search for a cheap ticket from ORD to Seattle in February when temperatures average between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • When it comes to looking for somewhere to lay your head, you'll find the top stays in Seattle right here. Check out these options once you've locked in your flight from Chicago O'Hare International Airport to Seattle:

  • There are so many things to do and see in this city it can be hard to work out where to begin. Pike Place Market, Space Needle and Seattle Skyline are popular attractions which should feature on every Seattle itinerary.

Explore more of the United States

  • Portland is just one of the many places in the United States waiting to be explored after you've experienced Seattle. Around 241 kilometres away to the south, top sights here include Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • If there's time to check out another well-known destination in the United States, consider Spokane, roughly 370 kilometres east of Seattle. Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes are the start of reasons to visit.

Plan the rest of your trip from Chicago to Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.