Find Cheap Flights to Chicago

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights to Chicago

(Round-trip)
Depart: Wed Oct 12 2016 Return: Wed Oct 19 2016 Trip spans 8 days
Major Airline
Major Airline
SEA
ORD
3h 46m
nonstop
ORD
SEA
4h 31m
nonstop
Depart: Thu Oct 13 2016 Return: Sat Oct 15 2016 Trip spans 3 days
United
United
MSP
ORD
1h 27m
nonstop
ORD
MSP
1h 38m
nonstop
Depart: Wed Oct 5 2016 Return: Tue Oct 18 2016 Trip spans 14 days
Spirit Airlines
Spirit Airlines
BWI
ORD
2h 10m
nonstop
ORD
BWI
1h 50m
nonstop
Depart: Wed Oct 26 2016 Return: Sat Oct 29 2016 Trip spans 4 days
American Airlines
American Airlines
DFW
ORD
2h 21m
nonstop
ORD
DFW
2h 28m
nonstop
Depart: Sat Oct 29 2016 Return: Wed Nov 2 2016 Trip spans 5 days
JetBlue
JetBlue
BOS
ORD
2h 40m
nonstop
ORD
BOS
2h 14m
nonstop
Depart: Mon Oct 31 2016 Return: Wed Nov 9 2016 Trip spans 10 days
Frontier
Frontier
SFO
ORD
4h 20m
nonstop
ORD
SFO
4h 50m
nonstop
Depart: Wed Oct 26 2016 Return: Sat Oct 29 2016 Trip spans 4 days
Southwest
Southwest
LGA
MDW
2h 20m
nonstop
MDW
LGA
2h 00m
nonstop
Depart: Sat Oct 29 2016 Return: Tue Nov 1 2016 Trip spans 4 days
Delta
Delta
JFK
ORD
2h 39m
nonstop
ORD
JFK
2h 14m
nonstop
Depart: Sun Oct 30 2016 Return: Tue Nov 1 2016 Trip spans 3 days
Major Airline
Major Airline
MSP
ORD
1h 35m
nonstop
ORD
MSP
1h 26m
nonstop
Depart: Fri Oct 7 2016 Return: Mon Oct 10 2016 Trip spans 4 days
United
United
MSP
ORD
1h 25m
nonstop
ORD
MSP
1h 28m
nonstop
Depart: Sun Oct 23 2016 Return: Mon Oct 24 2016 Trip spans 2 days
Major Airline
Major Airline
MSP
ORD
1h 35m
nonstop
ORD
MSP
1h 26m
nonstop
Depart: Wed Oct 5 2016 Return: Wed Oct 12 2016 Trip spans 8 days
Spirit Airlines
Spirit Airlines
DFW
ORD
2h 26m
nonstop
ORD
DFW
2h 28m
nonstop
Depart: Wed Oct 26 2016 Return: Mon Nov 7 2016 Trip spans 13 days
Major Airline
Major Airline
MSP
ORD
1h 35m
nonstop
ORD
MSP
1h 22m
nonstop
Depart: Tue Nov 1 2016 Return: Tue Nov 8 2016 Trip spans 8 days
JetBlue
JetBlue
BOS
ORD
2h 57m
nonstop
ORD
BOS
2h 14m
nonstop
Depart: Wed Nov 2 2016 Return: Sat Nov 5 2016 Trip spans 4 days
American Airlines
American Airlines
DFW
ORD
2h 20m
nonstop
ORD
DFW
2h 34m
nonstop
Depart: Wed Oct 26 2016 Return: Tue Nov 1 2016 Trip spans 7 days
Spirit Airlines
Spirit Airlines
BOS
ORD
2h 50m
nonstop
ORD
BOS
2h 26m
nonstop
Depart: Tue Nov 8 2016 Return: Thu Nov 10 2016 Trip spans 3 days
Major Airline
Major Airline
MSP
ORD
1h 35m
nonstop
ORD
MSP
1h 28m
nonstop
Depart: Thu Oct 20 2016 Return: Tue Oct 25 2016 Trip spans 6 days
United
United
BOS
ORD
2h 45m
nonstop
ORD
BOS
2h 21m
nonstop
Depart: Wed Nov 2 2016 Return: Sat Nov 5 2016 Trip spans 4 days
American Airlines
American Airlines
BOS
ORD
2h 54m
nonstop
ORD
BOS
2h 11m
nonstop
Depart: Tue Nov 8 2016 Return: Tue Nov 15 2016 Trip spans 8 days
JetBlue
JetBlue
BOS
ORD
2h 57m
nonstop
ORD
BOS
2h 11m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

San Francisco
$117
New York
only $120
only $127
Baltimore
$80
Seattle
$63
Minneapolis
$65
Dallas
$80
Boston
$80
Destination

Chicago
only $63
only $120
Airlines Airline reviews

442 travelers who booked a flight from Seattle to Chicago rated their chosen airlines with an average of 5.7.

Overall
5.8
Boarding
6.2
Crew
6.5
Comfort
5.6
Food
4.8
Entertainment
4.6