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Cheap flights from Seattle to Chicago O'Hare Intl Airport from £119

SEA — ORD
23 Oct — 30 Oct1
1 adult
1 adult, Economy, 0 bags

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

Wed 28/1016:27 -
1 stop5h 54m
Tue 3/1109:30 -
Nonstop4h 44m
Deal found 19/9£207
Sat 7/1116:27 -
1 stop5h 54m
Wed 11/1107:00 -
Nonstop4h 50m
Deal found 21/9£208
Fri 6/1116:27 -
1 stop5h 54m
Fri 13/1106:30 -
1 stop10h 42m
Deal found 22/9£210
Wed 11/1116:27 -
1 stop5h 54m
Wed 18/1106:30 -
2 stops14h 24m
Deal found 19/9£216
Wed 4/1117:51 -
Nonstop4h 08m
Wed 11/1118:35 -
Nonstop4h 54m
Deal found 20/9£220
Wed 11/1123:42 -
Nonstop3h 58m
Wed 18/1118:35 -
Nonstop4h 54m
Deal found 19/9£221
Wed 4/1116:27 -
1 stop5h 54m
Wed 11/1118:35 -
Nonstop4h 54m
Deal found 20/9£224
Wed 28/1016:27 -
1 stop5h 54m
Tue 3/1106:30 -
2 stops14h 24m
Deal found 19/9£231
Wed 28/1007:15 -
Nonstop4h 15m
Wed 28/1017:30 -
Nonstop4h 46m
Deal found 22/9£234
Thu 22/1023:13 -
Nonstop4h 06m
Sat 31/1012:45 -
Nonstop4h 47m
Deal found 21/9£237
Fri 30/1008:32 -
Nonstop4h 21m
Tue 3/1118:35 -
Nonstop4h 54m
Deal found 18/9£240

Find flight deals from Seattle to O'Hare Intl

Round-trip from

£207

One-way from

£119

Popular in

July

Cheapest in

February

Average price

£290

Good one-way deal

£153 or less
Alaska Airlines
  • Alaska Airlines
  • 28/10-3/11
  • 1 total stop
  • 10h 38m total
  • Seattle to Chicago
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Alaska Airlines
  • Alaska Airlines
  • 14/11-31/12
  • Nonstop
  • 4h 08m total
  • Seattle to Chicago
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£33 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Chicago O'Hare Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Chicago O'Hare Intl Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Mon 26/10

17:49-23:59

Nonstop4h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£119

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Sat 31/10

07:45-14:00

Nonstop4h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£119

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Wed 21/10

11:56-18:20

Nonstop4h 24m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£119

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Mon 2/11

07:15-13:30

Nonstop4h 15m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£119

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Mon 2/11

13:16-22:29

1 stop7h 13m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£127

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Sat 7/11

12:45-22:46

1 stop8h 01m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£127

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Fri 16/10

17:30-23:34

Nonstop4h 04m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£135

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Fri 6/11

10:39-16:53

Nonstop4h 14m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£135

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Sat 2/1

18:28-18:50

1 stop22h 22m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£163

SeattleChicago

SEA Seattle/Tacoma Intl - ORD Chicago O'Hare Intl

SEAORD

Seattle/Tacoma Intl

Mon 26/10

11:25-20:30

1 stop7h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£164

Flights are sorted by cheapest return flights first.

Deals found on 18/9

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 return price

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?

The price you pay for your flight from Seattle to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 £185). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £312). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 61% on flights from Seattle to Chicago O'Hare Intl Airport by exploring options for tickets in the afternoon.

How much does it cost for a return flight from Seattle to Chicago O'Hare Intl Airport?

Airfare is below average for this route at the moment.

Seattle to Chicago O'Hare Intl Airport flights typically cost between £235 and £346 in October.
The cheapest return price found within the last 5 days was £207 on Multiple Airlines (28 Oct–3 Nov).

Related info for your journey

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

    If you book a flight to Chicago O'Hare Intl from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 31 flights from Seattle/Tacoma Intl to Chicago O'Hare Intl per day from 0 different airlines.

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

    Airlines like Alaska Airlines, Delta, and United Airlines fly from Seattle to Chicago O'Hare Intl Airport in about 4h 11m. The time it takes to get you to your destination is usually consistent. The distance from Seattle to Chicago O'Hare Intl Airport is about 1715 mi. All flights are typically direct.

  • 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 KLM (100%), Virgin Atlantic (100%) and Royal Jordanian (91%).

  • 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 holiday 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 £185). Flying from Seattle to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £312). 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
Elk Grove Village

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