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Cheap flights from Seattle to Chicago O'Hare Intl Airport from C$ 248

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
8 Jul — 15 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Chicago O'Hare Intl are usually found in February or January, booked 86 days in advance, depart on a Thursday or Sunday and return on a Friday

Cheap flight deals from Seattle to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to O'Hare Intl
Explore the most affordable flight options available from Seattle to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 June 2026.

Sat 13/66:00 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Tue 16/63:43 p.m.
ORD
-
SEA
Nonstop4h 39m
Alaska Airlines
Deal found 7/6C$ 479
Wed 10/66:00 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Sat 13/67:17 p.m.
ORD
-
SEA
Nonstop4h 41m
Alaska Airlines
Deal found 6/6C$ 486
Sat 22/85:40 p.m.
SEA
-
ORD
Nonstop3h 58m
Delta
Sun 30/86:25 a.m.
ORD
-
SEA
1 stop6h 34m
Delta
Deal found 4/6C$ 488
Wed 19/88:48 a.m.
SEA
-
ORD
1 stop8h 33m
Alaska Airlines
Thu 27/82:22 p.m.
ORD
-
SEA
1 stop6h 29m
Alaska Airlines
Deal found 5/6C$ 489
Sat 15/811:00 p.m.
SEA
-
ORD
1 stop12h 13m
Alaska Airlines
Thu 20/82:18 p.m.
ORD
-
SEA
1 stop11h 22m
Alaska Airlines
Deal found 5/6C$ 491
Fri 3/75:48 p.m.
SEA
-
ORD
Nonstop4h 11m
Multiple Airlines
Wed 8/79:57 p.m.
ORD
-
SEA
1 stop13h 20m
Multiple Airlines
Deal found 7/6C$ 492
Fri 14/812:17 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Sun 23/81:03 p.m.
ORD
-
SEA
Nonstop4h 38m
Alaska Airlines
Deal found 8/6C$ 493
Sat 13/612:17 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Wed 24/68:05 p.m.
ORD
-
SEA
Nonstop4h 44m
Alaska Airlines
Deal found 3/6C$ 495
Wed 24/65:15 p.m.
SEA
-
ORD
Nonstop4h 07m
United Airlines
Wed 15/77:00 a.m.
ORD
-
SEA
Nonstop4h 40m
United Airlines
Deal found 4/6C$ 496
Mon 14/911:00 p.m.
SEA
-
ORD
Nonstop4h 06m
United Airlines
Fri 25/98:45 a.m.
ORD
-
SEA
Nonstop4h 42m
United Airlines
Deal found 5/6C$ 498
Fri 21/86:00 a.m.
SEA
-
ORD
Nonstop4h 07m
Alaska Airlines
Fri 21/82:18 p.m.
ORD
-
SEA
1 stop9h 22m
Alaska Airlines
Deal found 5/6C$ 499

Find flight deals from Seattle to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8 June 2026.

Round-trip from

C$ 486

One-way from

C$ 248

Popular in

June

Cheapest in

February

Average price

C$ 521

Good round-trip deal

C$ 531 or less

Good one-way deal

C$ 277 or less
Alaska Airlines
  • Alaska Airlines
  • 24/7-6/8
  • 1 total stop
  • 10h 10m total
  • Seattle to Chicago
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Delta
  • Delta
  • 3/7
  • Nonstop
  • 4h 10m total
  • Seattle to Chicago
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 8 June 2026.
Use the filters below to find and compare flights from Seattle to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 26/8

5:30 p.m.-11:28 p.m.

Nonstop3h 58m

Chicago O'Hare Intl

Sun 30/8

6:25 a.m.-10:59 a.m.

1 stop6h 34m

C$ 488

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 8/10

7:20 a.m.-5:57 p.m.

1 stop8h 37m

Chicago O'Hare Intl

Tue 13/10

7:00 a.m.-9:45 a.m.

Nonstop4h 45m

C$ 488

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 9/8

12:17 a.m.-6:20 a.m.

Nonstop4h 03m

Chicago O'Hare Intl

Sun 16/8

6:42 p.m.-9:34 p.m.

Nonstop4h 52m

C$ 493

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 3/7

5:48 p.m.-11:59 p.m.

Nonstop4h 11m

Chicago O'Hare Intl

Wed 8/7

6:00 a.m.-8:38 a.m.

Nonstop4h 38m

C$ 493

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 7/7

5:48 p.m.-11:59 p.m.

Nonstop4h 11m

Chicago O'Hare Intl

Fri 10/7

8:20 p.m.-11:04 p.m.

Nonstop4h 44m

C$ 493
Quickest round-trip

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 29/7

5:40 p.m.-11:38 p.m.

Nonstop3h 58m

Chicago O'Hare Intl

Sun 9/8

7:00 a.m.-9:37 a.m.

Nonstop4h 37m

C$ 495

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 12/8

6:00 a.m.-12:03 p.m.

Nonstop4h 03m

Chicago O'Hare Intl

Sun 16/8

8:20 p.m.-11:04 p.m.

Nonstop4h 44m

C$ 495

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 20/10

10:30 a.m.-4:50 p.m.

Nonstop4h 20m

Chicago O'Hare Intl

Wed 21/10

5:46 p.m.-8:28 p.m.

Nonstop4h 42m

C$ 495

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 15/8

5:48 p.m.-11:59 p.m.

Nonstop4h 11m

Chicago O'Hare Intl

Thu 20/8

3:43 p.m.-6:16 p.m.

Nonstop4h 33m

C$ 495

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 20/8

7:15 a.m.-1:23 p.m.

Nonstop4h 08m

Chicago O'Hare Intl

Thu 20/8

7:44 p.m.-11:59 p.m.

1 stop6h 15m

C$ 506

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight from Seattle to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Chicago O'Hare Intl Airport

How far ahead should I book a flight from Seattle to Chicago O'Hare Intl Airport?

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Chicago O'Hare Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of C$ 344). Flying from Seattle to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 521). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to ORD?

Find hourly flight availability from Seattle to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 June 2026.

One of the essential ways to save on airfare from Seattle to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 64% on airfare.

What is the cheapest day to fly from Seattle to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to O'Hare Intl. Price data was last updated on 8 June 2026.

Travelers seeking maximum savings on their Seattle to Chicago O'Hare Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Seattle to Chicago O'Hare Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Seattle to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Chicago O'Hare Intl?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Chicago O'Hare Intl. 1 airline have flights from Seattle/Tacoma Intl to Chicago O'Hare Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Chicago O'Hare Intl should not be difficult; the airport handles an average of 50 outbound flights to Chicago O'Hare Intl per day.

  • How long is the flight from Seattle to Chicago O'Hare Intl Airport?

    Delta and Alaska Airlines can get you from Seattle to Chicago O'Hare Intl Airport in just under 3h 58m. Your travel time will be generally consistent. Seattle and Chicago O'Hare Intl Airport are separated by a distance of 2760 km. All flights are typically direct.

  • What is the cheapest airline to fly from Seattle to Chicago O'Hare Intl Airport round-trip?

    Alaska Airlines, at C$ 215, was found to be the cheapest airline from Seattle to Chicago O'Hare Intl Airport.. Alaska Airlines is 51% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most reliable airlines from Seattle to Chicago O'Hare Intl Airport?

    The top 3 most reliable airlines when flying from Seattle to Chicago O'Hare Intl Airport are Austrian Airlines (93%), Air France (91%) and SWISS (88%).

  • What are the cheapest flights from Seattle to Chicago O'Hare Intl Airport?

    Looking at all options, your cheapest flight can be booked for C$ 247. While the most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl) can be booked for C$ 495 on average, our data indicates C$ 443 when flying from Seattle to Chicago O'Hare Intl Airport.

  • Can I find deals for flights from Seattle to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to O'Hare Intl.

  • Can I find deals for business class flights from Seattle to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Seattle to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Chicago O'Hare Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Chicago O'Hare Intl Airport (average of C$ 344). Flying from Seattle to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 521). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Northbrook
Evanston
Des Plaines
Skokie
Downers Grove
Elk Grove Village
Racine
Bolingbrook
Naperville
Romeoville
Schaumburg

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Can Cheapflights find flights from Seattle to O'Hare Intl with no change fees?

Certainly. Search results for flights to O'Hare Intl from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to O'Hare Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to O'Hare Intl from Seattle today and book when prices fit your budget.

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