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

Airlines like Delta and Alaska Airlines fly from Seattle to Chicago O'Hare Intl Airport in about 4h 14m. The time it takes to get you to your destination can typically vary by up to 5h 20m. The distance from Seattle to Chicago O'Hare Intl Airport is about 1715 mi. This flight may include one or multiple stops.

Weekly flight availability from Seattle to Chicago O'Hare Intl Airport

The most flights from SEA to ORD are scheduled on a Tuesday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 Porter Airlines (90%), Air France (88%) and Avianca (86%).

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 33 flights from Seattle/Tacoma Intl to Chicago O'Hare Intl per day from 0 different airlines.

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.

£120+ Cheap Flights from Seattle to Chicago O'Hare Intl Airport

Cheap flight deals from Seattle to O'Hare Intl

Enter your travel dates to find the best prices.

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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 12 November 2026.

Thu 10/1211:30 -

1 stop8h 26m

Sun 13/1207:45 -

1 stop11h 30m

Deal found 11/11£208

Tue 1/1207:00 -

Nonstop4h 10m

Sat 5/1208:55 -

Nonstop4h 49m

Deal found 10/11£209

Tue 1/1207:00 -

Nonstop4h 10m

Tue 8/1213:30 -

1 stop9h 31m

Deal found 7/11£210

Tue 1/1207:20 -

Nonstop4h 10m

Tue 15/1214:04 -

1 stop6h 43m

Deal found 10/11£213

Sat 5/1213:05 -

Nonstop4h 05m

Tue 8/1214:13 -

1 stop8h 43m

Deal found 7/11£213

Tue 8/1209:12 -

1 stop7h 48m

Sat 12/1206:00 -

Nonstop4h 57m

Deal found 10/11£216

Tue 1/1217:50 -

Nonstop4h 07m

Thu 3/1207:45 -

1 stop9h 26m

Deal found 10/11£216

Wed 2/1216:04 -

1 stop5h 55m

Mon 7/1210:25 -

1 stop7h 57m

Deal found 9/11£221

Tue 15/1207:15 -

1 stop8h 00m

Mon 21/1214:27 -

Nonstop4h 48m

Deal found 10/11£224

Tue 29/1217:52 -

Nonstop4h 07m

Wed 6/114:25 -

Nonstop4h 40m

Deal found 10/11£225

Sun 13/1217:50 -

Nonstop4h 07m

Mon 14/1206:40 -

Nonstop4h 57m

Deal found 9/11£225

Find flight deals from Seattle to O'Hare Intl

Round-trip from	£208
One-way from	£120
Popular in	November
Cheapest in	February
Average price	£313

Delta
10/12-13/12
2 total stops
19h 56m total
Seattle to Chicago

Search Deals

United Airlines
12/1-31/12
1 total stop
6h 21m total
Seattle to Chicago

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£20 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2026

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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.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Thu 24/12

17:52-23:59

Nonstop4h 07m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£124

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Tue 15/12

07:05-19:00

1 stop9h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£128

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Fri 1/1

14:10-20:23

Nonstop4h 13m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£143

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Sun 20/12

17:48-23:59

Nonstop4h 11m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£146

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Sun 20/12

17:52-23:59

Nonstop4h 07m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£150

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Wed 23/12

23:44-05:58

Nonstop4h 14m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£156

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Thu 11/2

21:50-13:09

1 stop13h 19m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£157

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Fri 1/1

23:59-09:19

1 stop7h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£176

Fastest return journey

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Sun 21/3

07:00-13:06

Nonstop4h 06m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£180

SeattleChicago

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

SEAORD

Seattle/Tacoma Intl

Fri 18/12

23:44-05:58

Nonstop4h 14m

Chicago O'Hare Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

£188

Flights are sorted by cheapest return flights first.

Deals found on 8/11

Showing 1-10 of 20 resultsSorted by cheapest first

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.

SEA-ORD

Estimated return 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

Prices

Airlines

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 60 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 £186). Flying from Seattle to Chicago O'Hare Intl Airport in November is currently the most expensive (average of £313). 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 at midday, when flights are generally more expensive, you can save up to 65% 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 £252 and £371 in December.
The cheapest return price found within the last 5 days was £208 on Delta (10 Dec–13 Dec).

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 33 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 Delta and Alaska Airlines fly from Seattle to Chicago O'Hare Intl Airport in about 4h 14m. The time it takes to get you to your destination can typically vary by up to 5h 20m. The distance from Seattle to Chicago O'Hare Intl Airport is about 1715 mi. This flight may include one or multiple stops.
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 Porter Airlines (90%), Air France (88%) and Avianca (86%).
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 £186). Flying from Seattle to Chicago O'Hare Intl Airport in November is currently the most expensive (average of £313). 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.

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Cheap flights from Seattle to Chicago O'Hare Intl Airport from £120

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to O'Hare Intl

Cheapest flights from Seattle to O'Hare IntlExplore 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 12 November 2026.

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 12 November 2026.

Best flights from Seattle to O'Hare IntlDiscover carefully curated flight deals from Seattle to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.

Discover carefully curated flight deals from Seattle to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.

Direct flights from Seattle to O'Hare IntlExplore direct flight options from Seattle to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 November 2026.

Explore direct flight options from Seattle to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 November 2026.

Last-minute flights from Seattle to O'Hare IntlDiscover last-minute flight deals from Seattle to O'Hare Intl. Data last updated 12 November 2026 and is based on user searches.

Discover last-minute flight deals from Seattle to O'Hare Intl. Data last updated 12 November 2026 and is based on user searches.

One-way flights from Seattle to O'Hare IntlSearch for one-way flight options from Seattle to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 12 November 2026.

Search for one-way flight options from Seattle to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 12 November 2026.

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

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.

Cheapflights Insights

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 60 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?

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

Unlike at midday, when flights are generally more expensive, you can save up to 65% 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 £252 and £371 in December.The cheapest return price found within the last 5 days was £208 on Delta (10 Dec–13 Dec).

Weekly flight availability from Seattle to Chicago O'Hare Intl Airport

The most flights from SEA to ORD are scheduled on a Tuesday (43 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

Related info for your journey

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

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

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

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

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

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

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

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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 12 November 2026.

Best flights from Seattle to O'Hare Intl
Discover carefully curated flight deals from Seattle to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 November 2026.

Direct flights from Seattle to O'Hare Intl
Explore direct flight options from Seattle to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 November 2026.

Last-minute flights from Seattle to O'Hare Intl
Discover last-minute flight deals from Seattle to O'Hare Intl. Data last updated 12 November 2026 and is based on user searches.

One-way flights from Seattle to O'Hare Intl
Search for one-way flight options from Seattle to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 12 November 2026.

Seattle to Chicago O'Hare Intl Airport flights typically cost between £252 and £371 in December.
The cheapest return price found within the last 5 days was £208 on Delta (10 Dec–13 Dec).