Cheap Flights from Chicago O'Hare International to Seattle

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Compare Chicago O'Hare International to Seattle flight deals

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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 to Seattle? Find the lowest prices on one-way and return tickets right here.

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 September.

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.

Chicago to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 1,497
Cheapest month to flySeptember
Average flight time4 hrs, 40 mins
Most popular airlineAmerican Airlines
Average flights per week433

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 R 2,952. 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 40 minutes is the average flight time from Chicago O'Hare International to Seattle.
American Airlines, Qatar Airways and Air Tahiti Nui fly direct from Chicago O'Hare International to Seattle.
As of May 2025, there are 433 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 May 2025.
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 R 2,952.
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, 31 May 2025.
Yes – the average flight time is 4 hours and 40 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 12°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, Hawaiian Airlines and Alaska Airlines offer the cheapest flight tickets to Seattle.

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

  • Take a direct flight from O'Hare International Airport to Seattle and you'll be travelling for around 4 hours 3 minutes.

  • Seattle is 2 hours behind Chicago, where O'Hare International Airport is located. Seattle operates on the UTC-7 timezone.

  • The most popular route is from O'Hare International Airport (ORD) to Seattle-Tacoma International Airport (SEA). Choose from 811 weekly services between these two airports. If you'd like to get on your way as soon as possible, the earliest flight from ORD to SEA is the 06:00 Alaska Airlines service. If you prefer to travel later, the last departure is at 21:32 with United.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to catch your flight from ORD to Seattle.

  • Going away during a peak time like August? Popular periods (like summer, Thanksgiving, Christmas and spring break) can add another hour at security. Play things extra safe and arrive up to four hours before international flights and two hours before a domestic departure.

  • You can book a nonstop flight from O'Hare International Airport to Seattle that lands at Seattle-Tacoma International Airport (SEA).

  • Choose from a variety of airlines that operate direct flights from O'Hare International Airport to Seattle. Book your journey with one of these:

  • For a domestic flight within United States, you won't need a passport or visa. However, you'll have to present another form of identification, such as a driver's licence or ID card. Once you've booked cheap tickets from O'Hare International Airport to Seattle, make sure your ID is up to date.

  • ORD is about 40 kilometres from central Chicago. If you're driving, ride-sharing or catching a cab from the centre, it'll take you 35 minutes or so to get there, depending on traffic. If you're using public transport, expect the trip time to be approximately 54 minutes.

  • Booked an early flight from O'Hare International Airport to Seattle? Avoid the last-minute rush to the airport (and get some extra shut-eye) by choosing one of these hotels close to ORD:

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

  • R 1,497 is the best price for a one-way ticket from O'Hare International Airport to Seattle. A return flight starts from R 2,952. These fares can change depending on demand.

  • To score cheap tickets from ORD to Seattle, reserve your journey 9 months ahead of your planned departure.

  • The cheapest month for tickets from O'Hare International Airport to Seattle is May. You can easily compare prices using the 'Whole month' tool to find the cheapest travel date.

  • Set up a Price Alert for cheap tickets from ORD to Seattle. There's no need to look every day to see if fares have dropped. We'll update you as soon as the price changes.

  • Play around with the filters to find your ideal trip. To see the 'Fastest,' 'Cheapest' or 'Best' flights from O'Hare International Airport to Seattle, use the 'Sort by' function. You can also filter by airline, arrival and departure times, and number of stops.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to the centre of Seattle takes around 18 minutes by car. It's approximately 23 kilometres away.

  • If you're travelling by public transport, expect a journey of around 54 minutes.

  • Reserve a hotel near SEA if you're taking a late flight from O'Hare International Airport to Seattle. Select one of these accommodation options and avoid the hassle of a long transfer:

Lake Union Sea Plane Base Airport (LKE)

Best time to go to Seattle

  • It's time to plan your travel dates for your flight from O'Hare International Airport to Seattle. July is the busiest month to visit Seattle. If you like a more low-key vibe, go in May.

  • Lock in your flight from O'Hare International Airport to Seattle for August to experience the city during its warmest month. You can expect temperatures to range from 12ºC to 28ºC.

  • If you like cooler conditions, lock in a cheap flight from ORD to Seattle in February when temperatures average between -1ºC and 11ºC.

More about Seattle

  • When it comes to looking for somewhere to rest your head, you'll find the best places to stay in Seattle right here. Explore these hotels after you've booked your flight from O'Hare International Airport to Seattle:

  • All great holidays should include a little sightseeing. Gas Works - Lake View Point, Queen Anne Bowl Playfield and LMN Architects are essential stops on your Seattle itinerary.

Complete your Seattle trip with a car rental

  • Choose one of our car rentals in Seattle and explore the city on your own terms. Easily compare companies in one go to find your ideal ride once you've booked your hotel and cheap flights from O'Hare International Airport to Seattle.

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