Can I combine different airlines on the same trip?

Of course. We offer you the possibility of booking with more than 400 airlines so that you can find the cheapest fare or the most convenient combination: outbound flight with one airline and return flight with another.

Is lastminute.com a trustworthy travel brand?

In 1998, lastminute.com was one of the first online travel agencies. Currently, we are selling over 380,000 flights per year – and working hard on bringing travellers wherever they want to go.

What options are there if I have to change my flight?

lastminute.com offers flexibility services for purchase at the time of your booking. These services entitle you to change or cancel your flights without handling fee.**Flexibility services are available on selected flights only. Please read our T&Cs for more information.

I am afraid to lose my luggage, every time I fly. What can I do?

lastminute.com offers a range of baggage protection services, so that you are covered in case your luggage is delayed or lost.****Baggage protection services are available on selected flights only. Please read our T&Cs for more information.

How long does a flight take between Chicago and Seattle?

The flight from Chicago to Seattle has a duration of 4h 39m.

What are the cheapest flights from Chicago to Seattle?

The cheapest one-way flight costs £173 flying with Sun Country airlines and the cheapest return flight costs £264 with Southwest Airlines.

How many airports are there in the city of Chicago?

Chicago has 3 airport: CHI - All airports, Chicago O'Hare International Airport, Midway International Airport.

How many airports does Seattle have?

There are 2 airports in Seattle: SEA - All airports, Boeing Field/King County International Airport

Which Seattle airport is the most central?

The most central airport is SEA - All airports, 3.3km.

Which airlines have flights from Chicago to Seattle?

There are 7 airlines with flights from Chicago to Seattle; Those that offer lower prices are JetBlue Airways (£455).

Schedules of the first and last flight from Chicago to Seattle

The first flight from Chicago to Seattle is at 20:44 and the last flight departs at 22:37.

Cheap flights from Chicago to Seattle

Fly smart, spend less

Flights to Seattle from Chicago

Cheap flights from Chicago to Seattle from £173. Chicago (United States) - Seattle (United States) return flights from £264. From 01/10/2026 (Thursday) - 07/10/2026 (Wednesday). Check for the dates with the lowest prices and find the cheapest rates.

Round-trip flights from Chicago to Seattle

Cheapest round-trip flights from Chicago to Seattle

14 Oct - 21 Oct • 7 nights
12:38ORD
10h 42m1 stop
21:20SEA
JetBlue Airways
22:15SEA
11h 9m1 stop
11:24ORD
JetBlue Airways
from£797
14 Oct - 21 Oct • 7 nights
12:38ORD
10h 42m1 stop
21:20SEA
JetBlue Airways
22:15SEA
21h 55m1 stop
22:10ORD
JetBlue Airways
from£812
09 Oct - 16 Oct • 7 nights
20:00ORD
28h 42m1 stop
22:42SEA
JetBlue Airways
22:15SEA
11h 9m1 stop
11:24ORD
JetBlue Airways
from£814
14 Oct - 21 Oct • 7 nights
12:38ORD
10h 42m1 stop
21:20SEA
JetBlue Airways
23:55SEA
30h 52m1 stop
08:47ORD
JetBlue Airways
from£814
14 Oct - 21 Oct • 7 nights
09:38ORD
15h 4m1 stop
22:42SEA
JetBlue Airways
22:15SEA
11h 9m1 stop
11:24ORD
JetBlue Airways
from£814
09 Oct - 16 Oct • 7 nights
20:00ORD
28h 42m1 stop
22:42SEA
JetBlue Airways
22:15SEA
21h 55m1 stop
22:10ORD
JetBlue Airways
from£815

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Flights from Chicago to Seattle one way

Find one-way flights from Chicago to Seattle at great prices.

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Cheap flights from Chicago O'Hare International Airport to Seattle

Find cheap flights from Chicago O'Hare International Airport to Seattle now.

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Chicago to Seattle flight information

DEPARTING FROM:

Midway International Airport, more

ARRIVING IN:

SEA - All airports, more

AIRLINES:

Alaska Airlines, American Airlines, China Airlines, more

AVG FLIGHT TIME:

4h 39m

More information about flights to Seattle from Chicago

Information about flights from Chicago to Seattle

lastminute.com’s flight search finds you all available low cost flights from Chicago to Seattle in just a few clicks. When looking for a low cost flight Chicago-Seattle, simply specify departure and arrival dates and the maximum price you want to pay. It’s that simple!

Explore the additional services available on lastminute.com even once you have booked your flight Chicago-Seattle . On lastminute.com, as well as your flight Chicago-Seattle, you can also book car hire, ready for you on arrival in Seattle. If you want to stay in Seattle, our website has also created a way for you to book a hotel room in Seattle with no fuss.

Low cost flights to Seattle from Chicago are not always easy to find. lastminute.com wants to make it easy for you to find a inexpensive option, so with us you can even choose flights with different airlines and save money on your next trip .

lastminute.com selects from hundreds of flight deals Chicago-Seattle some of the best deals that month to save you time. Why not take advantage of the monthly flight offers and book now.

lastminute.com App for iPhone and Android – the solution to your travelling needs. Perfect if you are always on the move, need to book your travel from anywhere quickly and easily. Take this practical and reliable tool with you on your travels .

FAQs Chicago to Seattle flights

FAQs

Can I combine different airlines on the same trip?
Of course. We offer you the possibility of booking with more than 400 airlines so that you can find the cheapest fare or the most convenient combination: outbound flight with one airline and return flight with another.
Is lastminute.com a trustworthy travel brand?
In 1998, lastminute.com was one of the first online travel agencies. Currently, we are selling over 380,000 flights per year – and working hard on bringing travellers wherever they want to go.
What options are there if I have to change my flight?
lastminute.com offers flexibility services for purchase at the time of your booking. These services entitle you to change or cancel your flights without handling fee.*
*Flexibility services are available on selected flights only. Please read our T&Cs for more information.
I am afraid to lose my luggage, every time I fly. What can I do?
lastminute.com offers a range of baggage protection services, so that you are covered in case your luggage is delayed or lost.**
**Baggage protection services are available on selected flights only. Please read our T&Cs for more information.
How long does a flight take between Chicago and Seattle?
The flight from Chicago to Seattle has a duration of 4h 39m.
What are the cheapest flights from Chicago to Seattle?
The cheapest one-way flight costs £173 flying with Sun Country airlines and the cheapest return flight costs £264 with Southwest Airlines.
How many airports are there in the city of Chicago?
Chicago has 3 airport: CHI - All airports, Chicago O'Hare International Airport, Midway International Airport.
How many airports does Seattle have?
There are 2 airports in Seattle: SEA - All airports, Boeing Field/King County International Airport
Which Seattle airport is the most central?
The most central airport is SEA - All airports, 3.3km.
Which airlines have flights from Chicago to Seattle?
There are 7 airlines with flights from Chicago to Seattle; Those that offer lower prices are JetBlue Airways (£455).
Schedules of the first and last flight from Chicago to Seattle
The first flight from Chicago to Seattle is at 20:44 and the last flight departs at 22:37.