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Cheap flights from Seattle to Chicago O'Hare Intl Airport from C$ 211

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 13/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
21 Aug — 28 Aug1
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 83 days in advance, depart on a Friday or Thursday and return on a Wednesday

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 22 July 2026.

Fri 14/810:50 a.m.
SEA
-
ORD
Nonstop4h 10m
Delta
Sat 19/97:00 a.m.
ORD
-
SEA
Nonstop4h 35m
Delta
Deal found 21/7C$ 423
Fri 4/911:00 p.m.
SEA
-
ORD
Nonstop4h 06m
United Airlines
Mon 7/97:00 a.m.
ORD
-
SEA
Nonstop4h 35m
United Airlines
Deal found 21/7C$ 427
Mon 31/812:16 a.m.
SEA
-
ORD
Nonstop4h 04m
Multiple Airlines
Fri 4/98:11 p.m.
ORD
-
SEA
1 stop16h 28m
Multiple Airlines
Deal found 21/7C$ 428
Tue 1/910:34 a.m.
SEA
-
ORD
1 stop17h 43m
Frontier
Fri 4/98:11 p.m.
ORD
-
SEA
1 stop16h 28m
Frontier
Deal found 21/7C$ 432
Thu 27/88:49 p.m.
SEA
-
ORD
1 stop14h 33m
Alaska Airlines
Tue 1/96:01 a.m.
ORD
-
SEA
1 stop8h 38m
Alaska Airlines
Deal found 22/7C$ 435
Wed 12/86:00 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Mon 24/82:18 p.m.
ORD
-
SEA
1 stop11h 22m
Alaska Airlines
Deal found 21/7C$ 438
Fri 11/96:00 a.m.
SEA
-
ORD
Nonstop4h 07m
Alaska Airlines
Fri 11/93:52 p.m.
ORD
-
SEA
Nonstop4h 33m
Alaska Airlines
Deal found 17/7C$ 439
Thu 13/87:15 a.m.
SEA
-
ORD
Nonstop4h 08m
Delta
Fri 18/97:00 a.m.
ORD
-
SEA
Nonstop4h 35m
Delta
Deal found 21/7C$ 441
Tue 11/812:17 a.m.
SEA
-
ORD
Nonstop4h 03m
Alaska Airlines
Sun 16/88:20 p.m.
ORD
-
SEA
Nonstop4h 44m
Alaska Airlines
Deal found 22/7C$ 445
Fri 25/95:51 p.m.
SEA
-
ORD
Nonstop4h 08m
Alaska Airlines
Fri 2/107:00 p.m.
ORD
-
SEA
Nonstop4h 38m
Alaska Airlines
Deal found 22/7C$ 446
Fri 21/83:35 p.m.
SEA
-
ORD
Nonstop4h 32m
American Airlines
Sun 23/89:25 p.m.
ORD
-
SEA
Nonstop4h 48m
American Airlines
Deal found 20/7C$ 448
Tue 18/83:30 p.m.
SEA
-
ORD
1 stop7h 29m
United Airlines
Fri 21/87:00 a.m.
ORD
-
SEA
Nonstop4h 35m
United Airlines
Deal found 19/7C$ 449

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 22 July 2026.

Round-trip from

C$ 423

One-way from

C$ 211

Popular in

July

Cheapest in

February

Average price

C$ 580

Good round-trip deal

C$ 404 or less

Good one-way deal

C$ 301 or less
Delta
  • Delta
  • 14/8-29/8
  • Nonstop
  • 8h 49m total
  • Seattle to Chicago
Search Deals
Delta
  • Delta
  • 13/8
  • Nonstop
  • 4h 08m total
  • Seattle to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 22 July 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

Fri 9/10

9:05 p.m.-1:25 p.m.

1 stop14h 20m

Chicago O'Hare Intl

Sun 11/10

6:00 a.m.-8:34 a.m.

Nonstop4h 34m

C$ 461
Quickest round-trip

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 22/8

6:00 a.m.-12:07 p.m.

Nonstop4h 07m

Chicago O'Hare Intl

Tue 25/8

6:00 a.m.-8:30 a.m.

Nonstop4h 30m

C$ 466

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 1/10

2:18 p.m.-11:59 p.m.

1 stop7h 41m

Chicago O'Hare Intl

Mon 5/10

7:16 p.m.-9:59 p.m.

Nonstop4h 43m

C$ 468

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 22/9

11:45 a.m.-6:01 p.m.

Nonstop4h 16m

Chicago O'Hare Intl

Thu 24/9

12:50 p.m.-3:25 p.m.

Nonstop4h 35m

C$ 482

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 22/8

6:00 a.m.-12:07 p.m.

Nonstop4h 07m

Chicago O'Hare Intl

Mon 24/8

6:00 a.m.-8:30 a.m.

Nonstop4h 30m

C$ 484

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 5/8

10:50 a.m.-5:00 p.m.

Nonstop4h 10m

Chicago O'Hare Intl

Tue 11/8

5:56 p.m.-8:35 p.m.

Nonstop4h 39m

C$ 493

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 15/8

5:13 p.m.-11:19 p.m.

Nonstop4h 06m

Chicago O'Hare Intl

Sat 22/8

4:20 p.m.-7:07 p.m.

Nonstop4h 47m

C$ 511

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 22/9

6:00 a.m.-12:07 p.m.

Nonstop4h 07m

Chicago O'Hare Intl

Thu 24/9

7:20 a.m.-2:39 p.m.

1 stop9h 19m

C$ 524
Cheapest one-way

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 18/9

5:51 p.m.-11:59 p.m.

Nonstop4h 08m

C$ 224

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 14/8

10:50 a.m.-5:00 p.m.

Nonstop4h 10m

C$ 224

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/7

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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$ 348). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 580). 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 22 July 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 18 July 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?

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated 22 July 2026.
Check out reviews from past customers who have flown with Alaska Airlines from Seattle to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,689 reviews
Check prices

Boarding

8.1

Overall

7.9

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,689 reviews
Alaska Airlines
7.9
Good
12,689 reviews
Check prices

Boarding

8.1

Overall

7.9

Comfort

7.8

Entertainment

7.0

Food

7.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

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 52 outbound flights to Chicago O'Hare Intl per day.

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

    United Airlines, Delta, and Alaska Airlines can get you from Seattle to Chicago O'Hare Intl Airport in just under 3h 54m. Your travel time can differ by up to 3h 31m. Seattle and Chicago O'Hare Intl Airport are separated by a distance of 2760 km. This flight may include one or multiple stops.

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

    Alaska Airlines, at C$ 218, was found to be the cheapest airline from Seattle to Chicago O'Hare Intl Airport.. Alaska Airlines is 53% 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 (87%), Scandinavian Airlines (83%) and Royal Jordanian (82%).

  • 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$ 301. While the most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl) can be booked for C$ 370 on average, our data indicates C$ 473 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$ 348). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 580). 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
Downers Grove
Elk Grove Village
Racine
Bolingbrook
Naperville
Schaumburg

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Seattle to O'Hare Intl

Discover the top airline that operate flights from Seattle to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 22 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 218AverageC$ 384FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to O'Hare Intl?

Cheapflights makes it easy to find Seattle to O'Hare Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to O'Hare Intl?

Cheapflights simply makes it quick and affordable to book flights from Seattle to O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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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