Cheap Flights from Chicago to Seattle / Tacoma International

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Flight deals from Chicago to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best round-trip flight from Chicago to Seattle / Tacoma International Airport? If you want to travel next month, round-trip fares start from AED 754. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Chicago to Seattle / Tacoma International

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

Direct flights from Chicago to Seattle / Tacoma International

Chicago to Seattle / Tacoma International: Alternative routes

Compare routes from Chicago to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Chicago to Seattle: Flight information

The things to know before you go.
Cheapest flight foundAED 323
Cheapest month to flyMay
Average flight time4 hrs, 38 mins
Most popular airlineAmerican Airlines
Average flights per week417

Finding cheap flights from Chicago to Seattle / Tacoma International: Frequently asked questions

The best price we found for a round-trip flight from Chicago to Seattle / Tacoma International is AED 752. 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 37 minutes is the average flight time from Chicago to Seattle / Tacoma International.
American Airlines, Iberia and Southwest Airlines fly direct from Chicago to Seattle / Tacoma International.
There are 417 flights per week flying from Chicago to Seattle / Tacoma International, as of April 2026.
The cheapest month to fly from Chicago to Seattle / Tacoma International is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Seattle / Tacoma International Airport on Wednesday, May 13, 2026.
Yes – the average flight time is 4 hours and 37 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 / Tacoma International 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.

Flying from Chicago to Seattle-Tacoma International Airport (SEA): What you need to know

  • Begin your travels at one of Chicago's main airports, Chicago O'Hare International Airport (ORD) or Chicago Midway International Airport (MDW). Check out your options for booking a flight from Chicago to Seattle-Tacoma International Airport (SEA) jetting off from either of these.

  • Expect to be traveling for 4 hours 40 minutes. On average, that's the duration of a direct Chicago to Seattle-Tacoma International Airport flight.

  • Seattle is two hours behind Chicago. Seattle-Tacoma International Airport is located in Seattle, which runs on the UTC-8 timezone.

  • Chicago O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA) is the most popular route. There are 105 direct flights a week to choose from. If you have things to do before heading off, hop on the last flight with United Airlines at 9:32pm. Opt for the first ORD to SEA departure operated by Alaska Airlines at 6am if you're aiming for an earlier start.

  • To ensure you catch your flight from Chicago to SEA, allow plenty of time to navigate the airport and find your gate. Arriving two hours before international departures and an hour before domestic flights is the general rule.

  • Hopping on a plane during a peak time like July? Popular seasons (like Thanksgiving, Christmas and New Year) can easily add another hour at security. Be extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

Airports in Chicago

Chicago O'Hare International Airport (ORD)

  • You can book a direct flight from Chicago to Seattle-Tacoma International Airport (SEA) out of Chicago O'Hare International Airport (ORD).

  • Choose from a variety of carriers that operate direct flights from Chicago to Seattle-Tacoma International Airport departing from ORD. Get on board with any of these:

  • Most travelers choose to book seats with Alaska Airlines between ORD and SEA.

  • United is the best performing carrier for punctuality on this route.

  • The journey from central Chicago to ORD takes about 45 minutes on public transport. If you ride-share, drive or get a cab, you'll cover the 27 kilometers in 30 minutes or so, depending on traffic.

  • Looking for a convenient hotel near Chicago O'Hare International Airport? If you've booked an early flight from Chicago to Seattle-Tacoma International Airport, these accommodation options will put you conveniently close to check-in:

  • When it comes to Chicago O'Hare International Airport's on-time performance, 70% of flights meet their scheduled arrival time.

  • You'll find ORD at 10000 West O'Hare.

Chicago Midway International Airport (MDW)

  • You can book a direct Chicago to Seattle-Tacoma International Airport (SEA) plane ticket out of Chicago Midway International Airport (MDW). Decide if leaving from MDW is a better fit for your trip.

  • From MDW, direct flights from Chicago to SEA are available with Southwest Airlines.

  • Southwest Airlines is the most popular choice for travelers flying from MDW to SEA.

  • Flights between Chicago Midway International Airport and Seattle-Tacoma International Airport are more likely to stay on schedule with Southwest Airlines than with any other carrier.

  • MDW is around 16 kilometers from central Chicago. It'll take you 25 minutes or so to get to the airport if you're driving from the city center. Public transport takes roughly 30 minutes.

  • Want to enjoy an extra night away before your Chicago to SEA flight? Unwind in a hotel near Chicago Midway International Airport before your vacation officially starts. These stays have a room with your name on it:

  • Chicago Midway International Airport has an on-time performance rate of 76%. This figure gives an insight into how frequently flights departing from this airport land on time.

  • MDW is located at 5700 South Cicero.

Chicago Rockford International Airport (RFD)

  • The journey to RFD from central Chicago is around 2 hours on public transport. If you're planning to travel by car, it'll take you roughly 1 hour 40 minutes to cover the 145 kilometers or so.

  • Make departure day worry-free — stay close to Chicago Rockford International Airport and know you'll get to your boarding gate with time to spare. Check in to one of these hotels the day before if you've booked an early Chicago to Seattle-Tacoma International Airport flight:

  • The on-time performance rating of RFD is 71%. In other words, that's how often flights departing this airport arrive at their final stop as planned.

  • You'll find Chicago Rockford International Airport at 2 Airport Cir.

About Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • Central Seattle is around 23 kilometers from Seattle-Tacoma International Airport and takes about 25 minutes to reach by car. Work out your options for getting into the city, whether that's with a car rental, cab or ride-share.

  • Traveling by public transport will take you roughly 35 minutes.

How to find the cheapest flights from Chicago to Seattle-Tacoma International Airport (SEA)

  • AED 323 is the best price for a one-way ticket from Chicago to Seattle-Tacoma International Airport. A return flight starts from AED 752. These prices may change based on demand.

  • Booking early is often the key to finding a cheap flight from Chicago to SEA. Airlines adjust prices based on demand, so the closer you get to departure, the more you'll likely spend on your ticket.

  • If you're flexible with your travel plans, try using the 'Whole month' search tool. It'll give you the cheapest price across the month when searching for your Chicago to Seattle-Tacoma International Airport ticket.

  • There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll let you know as soon as there's a better deal on plane tickets from Chicago to SEA.

  • Filters make it easier to scoop up a deal on your flight from Chicago to Seattle-Tacoma International Airport. Pick the departure times, carriers and stops that make sense for you. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from Chicago to Seattle-Tacoma International Airport (SEA)

  • July is the most popular month for flights from Chicago to Seattle-Tacoma International Airport (SEA). Visit Seattle in December for a more low-key escape.

  • Before locking in your Chicago to SEA plane ticket, consider what kind of weather you prefer. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • Search for cheap tickets from Chicago to Seattle-Tacoma International Airport in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • Start your Seattle trip right by choosing the ideal place to stay. Once you've booked your flight from Chicago to Seattle-Tacoma International Airport, browse our selection of accommodation options including:

  • There are so many things to discover in this city, it can be hard to know where to begin. Space Needle, Pike Place Market and Seattle Skyline are popular attractions which should be on any well-planned 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 seen Seattle. Around 209 kilometers away to the south, its best attractions include Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • Around 209 kilometers south of Seattle, Vancouver is another essential stop in the United States. Experience the best of this destination with a visit to Reconstructed HBC Fort Vancouver, The Marshall House: Victorian Jewel of Officers Row and Clark County Historical Museum.

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