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Cheap flights from Seattle to Chicago O'Hare Intl Airport from C$ 122

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ORD
25 Feb — 4 Mar1
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 Friday and return on a Thursday

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 26 January 2026.

Thu 26/211:59 p.m.
SEA
-
ORD
Nonstop3h 57m
United Airlines
Tue 3/34:20 p.m.
ORD
-
SEA
Nonstop4h 43m
United Airlines
Deal found 25/1C$ 242
Sat 21/212:32 p.m.
SEA
-
ORD
1 stop8h 54m
United Airlines
Wed 25/24:20 p.m.
ORD
-
SEA
Nonstop4h 43m
United Airlines
Deal found 25/1C$ 251
Wed 25/210:22 a.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Sat 28/27:00 a.m.
ORD
-
SEA
Nonstop4h 51m
Alaska Airlines
Deal found 25/1C$ 256
Fri 27/25:55 p.m.
SEA
-
ORD
Nonstop4h 01m
Alaska Airlines
Mon 2/37:00 a.m.
ORD
-
SEA
Nonstop4h 51m
Alaska Airlines
Deal found 25/1C$ 270
Fri 13/311:59 p.m.
SEA
-
ORD
Nonstop3h 57m
United Airlines
Mon 16/38:01 p.m.
ORD
-
SEA
Nonstop4h 44m
United Airlines
Deal found 26/1C$ 275
Tue 21/412:08 p.m.
SEA
-
ORD
1 stop9h 29m
United Airlines
Sat 25/41:25 p.m.
ORD
-
SEA
Nonstop4h 38m
United Airlines
Deal found 25/1C$ 278
Tue 10/27:10 a.m.
SEA
-
ORD
Nonstop4h 12m
Delta
Thu 19/27:40 a.m.
ORD
-
SEA
Nonstop4h 45m
Delta
Deal found 25/1C$ 279
Fri 8/512:29 a.m.
SEA
-
ORD
Nonstop4h 11m
Alaska Airlines
Wed 20/53:43 p.m.
ORD
-
SEA
1 stop10h 11m
Alaska Airlines
Deal found 26/1C$ 284
Wed 11/28:10 a.m.
SEA
-
ORD
1 stop8h 27m
United Airlines
Tue 17/24:20 p.m.
ORD
-
SEA
Nonstop4h 43m
United Airlines
Deal found 25/1C$ 293
Fri 8/51:28 p.m.
SEA
-
ORD
Nonstop4h 24m
Alaska Airlines
Thu 14/56:00 a.m.
ORD
-
SEA
Nonstop4h 34m
Alaska Airlines
Deal found 26/1C$ 297
Fri 20/23:16 p.m.
SEA
-
ORD
1 stop6h 43m
United Airlines
Sun 1/37:59 p.m.
ORD
-
SEA
Nonstop4h 44m
United Airlines
Deal found 25/1C$ 300
Mon 16/311:59 p.m.
SEA
-
ORD
Nonstop3h 57m
United Airlines
Sat 21/38:01 p.m.
ORD
-
SEA
Nonstop4h 44m
United Airlines
Deal found 26/1C$ 301

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 26 January 2026.

Round-trip from

C$ 242

One-way from

C$ 122

Popular in

December

Cheapest in

February

Average price

C$ 366

Good round-trip deal

C$ 954 or less

Good one-way deal

C$ 450 or less
Delta
  • Delta
  • 6/3-9/3
  • Nonstop
  • 8h 50m total
  • Seattle to Chicago
Search Deals
Delta
  • Delta
  • 23/2
  • Nonstop
  • 3h 57m total
  • Seattle to Chicago
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 26 January 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

Seattle

Fly to

O'Hare Intl

Route

Depart

Return

Price

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 6/3

7:10 a.m.-1:22 p.m.

Nonstop4h 12m

Chicago O'Hare Intl

Wed 11/3

2:20 p.m.-4:58 p.m.

Nonstop4h 38m

C$ 242

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 4/5

11:48 p.m.-5:49 a.m.

Nonstop4h 01m

Chicago O'Hare Intl

Thu 7/5

4:20 p.m.-7:00 p.m.

Nonstop4h 40m

C$ 297

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 15/4

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

Nonstop4h 08m

Chicago O'Hare Intl

Sun 19/4

7:15 a.m.-10:04 a.m.

Nonstop4h 49m

C$ 311

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 21/2

11:59 p.m.-5:56 a.m.

Nonstop3h 57m

Chicago O'Hare Intl

Sun 15/3

8:01 p.m.-10:45 p.m.

Nonstop4h 44m

C$ 329

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 7/3

7:10 a.m.-11:59 p.m.

1 stop14h 49m

Chicago O'Hare Intl

Sat 14/3

5:29 p.m.-8:16 p.m.

Nonstop4h 47m

C$ 338

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 26/2

5:00 a.m.-2:05 p.m.

1 stop7h 05m

Chicago O'Hare Intl

Sat 28/2

3:05 p.m.-11:55 p.m.

2 stops10h 50m

C$ 367

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 3/7

5:15 p.m.-11:20 p.m.

Nonstop4h 05m

Chicago O'Hare Intl

Sat 11/7

9:15 p.m.-12:05 a.m.

Nonstop4h 50m

C$ 371

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 14/2

5:55 p.m.-11:52 p.m.

Nonstop3h 57m

Chicago O'Hare Intl

Mon 16/2

7:40 a.m.-10:25 a.m.

Nonstop4h 45m

C$ 379

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sun 1/3

7:00 a.m.-1:06 p.m.

Nonstop4h 06m

Chicago O'Hare Intl

Sun 22/3

8:01 p.m.-10:45 p.m.

Nonstop4h 44m

C$ 386

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Fri 10/4

10:57 p.m.-3:18 p.m.

2 stops14h 21m

Chicago O'Hare Intl

Thu 16/4

12:46 p.m.-3:20 p.m.

Nonstop4h 34m

C$ 397

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/1

Showing 1-10 of 24 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to O'Hare Intl. Price data was last updated on 23 January 2026.

Booking 86 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$ 156). Flying from Seattle to Chicago O'Hare Intl Airport in May is currently the most expensive (average of C$ 231). 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 26 January 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 66% 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 24 January 2026.

Travelers seeking maximum savings on their Seattle to Chicago O'Hare Intl Airport flight should consider departing on Monday 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.

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 26 January 2026.
Check out reviews from past customers who have flown with Alaska Airlines and Hawaiian 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
8.0
Very good
11,792 reviews
Check prices

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,792 reviews
Alaska Airlines
8.0
Very good
11,792 reviews
Check prices

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
8.0
Very good
11,792 reviews
Check prices

Entertainment

7.0

Comfort

7.8

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

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. 2 airlines 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 35 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 57m. Your travel time can differ by up to 10h 52m. Seattle and Chicago O'Hare Intl Airport are separated by a distance of 2760 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Chicago O'Hare Intl Airport round-trip?

    Hawaiian Airlines, at C$ 119, was found to be the cheapest airline from Seattle to Chicago O'Hare Intl Airport. An alternate airline flying to your destination would be Alaska Airlines. Hawaiian Airlines is 70% 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 (88%), Gulf Air (85%) and Alaska Airlines (85%).

  • 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$ 121. While the most popular route (Seattle/Tacoma Intl - Chicago O'Hare Intl) can be booked for C$ 382 on average, our data indicates C$ 795 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$ 156). Flying from Seattle to Chicago O'Hare Intl Airport in May is currently the most expensive (average of C$ 231). 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
Evanston
Des Plaines
Skokie
Downers Grove
Elk Grove Village
Racine
Naperville
Bolingbrook
Romeoville

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Seattle to O'Hare Intl

Discover the top 2 airlines 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 26 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapestC$ 119AverageC$ 438FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Alaska AirlinesCheapestC$ 212AverageC$ 360FlexibilityNo 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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