Cheap Flights from Seattle to Chicago O'Hare International

Compare Seattle to Chicago O'Hare International flight deals

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Flight deals from Seattle to Chicago O'Hare International

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

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

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

Direct flights from Seattle to Chicago O'Hare International

Seattle to Chicago O'Hare International: Alternative routes

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

Seattle to Chicago: Flight information

The things to know before you go.
Cheapest flight foundRs19,590
Cheapest month to flyFebruary
Average flight time4 hrs, 11 mins
Most popular airlineQatar Airways
Average flights per week283

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

The best price we found for a return flight from Seattle to Chicago O'Hare International is Rs43,577. 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 11 minutes is the average flight time from Seattle to Chicago O'Hare International.
Qatar Airways, United and Alaska Airlines fly direct from Seattle to Chicago O'Hare International.
As of December 2025, there are 283 flights per week flying from Seattle to Chicago O'Hare International.
The cheapest month to fly from Seattle to Chicago O'Hare International is usually January.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Chicago O'Hare International Airport on Thursday, 22 January 2026.
Yes – the average flight time is 4 hours and 11 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 Chicago O'Hare 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 Chicago is around 40 days in advance, so don’t leave your flight to the last minute.

Travelling from Seattle to O'Hare International Airport (ORD): What you need to know

  • Your travels get underway at Seattle's main airport, Seattle-Tacoma International Airport (SEA). Explore your options for catching a flight from Seattle to O'Hare International Airport (ORD) leaving from this terminal.

  • 4 hours 5 minutes is the average travel time for a direct Seattle to O'Hare International Airport flight.

  • The timezone in Chicago is UTC-5, which is two hours ahead of Seattle. O'Hare International Airport is located in Chicago.

  • Seattle-Tacoma International Airport (SEA) to O'Hare International Airport (ORD) is the most popular route. There are 106 direct flights a week to pick from. If you have plans before you fly, hop on the last flight with American Airlines at 11:59pm. Go for the first SEA to ORD departure with American Airlines at 12:05am if you want to get going earlier.

  • Give yourself enough time to catch your flight from Seattle to ORD. As a general rule, turn up at least two hours before international departures and an hour ahead for domestic flights.

  • If you're heading away during a major holiday or other peak period, allow extra time. Arrive two hours before domestic flights and up to four hours before international departures. Queues at security and check-in will be longer.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is a convenient option for travelling directly to your destination. Nonstop flights from Seattle to O'Hare International Airport (ORD) depart from this terminal.

  • At SEA, you'll find a good selection of airlines that operate direct flights from Seattle to O'Hare International Airport, including:

  • The most frequently booked airline between SEA and ORD is Alaska Airlines.

  • With an impressive 87.44% of services arriving as scheduled, United Airlines is the best-performing carrier for punctuality on this route.

  • SEA is about 23 kilometres from central Seattle. If you're ride-sharing, driving or catching a cab from the centre, it'll take 20 minutes or so to get there, depending on traffic. If you're taking public transport, expect the travel time to be around 55 minutes.

  • In search of a convenient hotel close to Seattle-Tacoma International Airport? If you've booked an early flight from Seattle to O'Hare International Airport, these accommodation options will put you moments from your check-in counter:

  • Seattle-Tacoma International Airport has an excellent on-time record, reducing the likelihood of delays. Departures from SEA arrive at their destination as scheduled 81.27% of the time.

Lake Union Sea Plane Base Airport (LKE)

  • LKE is about 3 kilometres from central Seattle. It'll take 10 minutes or so to get to the airport driving from the city centre. Public transport takes approximately 25 minutes.

  • Catching an early morning flight? Think about checking in to one of these accommodation options near Lake Union Sea Plane Base Airport the day before your Seattle to ORD flight:

About O'Hare International Airport (ORD)

Getting from O'Hare International Airport (ORD) to central Chicago

  • The centre of Chicago is about 26 kilometres from O'Hare International Airport. Journey times by cab or car hire will vary based on time of day, so do some research before you go.

  • If you're using public transport, expect a journey of roughly 55 minutes.

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

  • Rs19,540 is currently the best price for a one-way ticket from Seattle to O'Hare International Airport. Return flights start at Rs43,688. These fares can change based on availability and demand.

  • To find cheap flights from Seattle to ORD, book early. Airlines typically offer their most competitively priced fares when tickets first go on sale.

  • Cheap Seattle to O'Hare International Airport tickets are easier to find when you have flexibility in your schedule. Use the 'Whole month' search function to compare fares throughout the month and then choose the cheapest day.

  • Save time searching for cheap flight tickets from Seattle to ORD by creating a Price Alert. We'll send you an email or push notification on the app when prices go down.

  • Discover the best deal on a flight from Seattle to O'Hare International Airport with the help of the filters. Pick your ideal departure and arrival times, number of stops and airlines. You can also sort your results by 'Cheapest,' 'Best' or 'Fastest.'

The best time to fly from Seattle to O'Hare International Airport (ORD)

  • February is the quietest month for flights from Seattle to O'Hare International Airport (ORD), while August is the most popular. Figure out the best time to visit Chicago based on whether you like a lively atmosphere or a more laid-back vibe.

  • Book a Seattle to ORD flight ticket departing in July if you want to explore the city during its warmest month. You can expect temperatures in Chicago to range from 15ºC to 29ºC.

  • January sees temperatures of between -12ºC and 3ºC. Look for cheap tickets from Seattle to O'Hare International Airport around that time if you want to travel when it's cooler.

More about Chicago

Explore more of the United States

  • Indianapolis is just one of the many cities in the United States waiting to be explored once you've seen Chicago. Around 290 kilometres away to the south-east, its top attractions include 9-11 Memorial, Lucas Oil Stadium and Eiteljorg Museum.

  • Around 121 kilometres north of Chicago, Milwaukee is another essential stop in the United States. Experience this destination's highlights firsthand at Richards Duplex Apartments by Frank Lloyd Wright, Miller Park and Milwaukee County Zoo.

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