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: Fri Aug 18 2017 Return: Mon Aug 21 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 10m
nonstop
ORD
ATL
1h 52m
nonstop
Depart: Tue Sep 12 2017 Return: Mon Sep 18 2017 Trip spans 7 days
Multiple Airlines
Multiple Airlines
BWI
ORD
2h 23m
nonstop
ORD
BWI
1h 53m
nonstop
Depart: Thu Nov 30 2017 Return: Sat Dec 2 2017 Trip spans 3 days
American Airlines
American Airlines
ATL
ORD
2h 12m
nonstop
ORD
ATL
2h 06m
nonstop
Depart: Sat Dec 2 2017 Return: Tue Jan 9 2018 Trip spans 39 days
United
United
BOS
ORD
2h 52m
nonstop
ORD
BOS
2h 22m
nonstop
Depart: Mon Aug 21 2017 Return: Tue Aug 22 2017 Trip spans 2 days
Delta
Delta
BWI
MDW
3h 36m
1 stop
MDW
BWI
5h 45m
1 stop
Depart: Sat Sep 9 2017 Return: Tue Sep 12 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 10m
nonstop
ORD
ATL
2h 05m
nonstop
Depart: Mon Oct 2 2017 Return: Wed Oct 4 2017 Trip spans 3 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 10m
nonstop
ORD
ATL
2h 05m
nonstop
Depart: Sat Oct 7 2017 Return: Tue Oct 10 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 10m
nonstop
ORD
ATL
2h 05m
nonstop
Depart: Sun Oct 15 2017 Return: Sat Oct 21 2017 Trip spans 7 days
Spirit Airlines
Spirit Airlines
BWI
ORD
2h 09m
nonstop
ORD
BWI
1h 53m
nonstop
Depart: Sat Sep 2 2017 Return: Tue Sep 5 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
BOS
ORD
2h 47m
nonstop
ORD
BOS
2h 20m
nonstop
Depart: Fri Jan 19 2018 Return: Sun Jan 21 2018 Trip spans 3 days
American Airlines
American Airlines
BOS
ORD
2h 52m
nonstop
ORD
BOS
2h 21m
nonstop
Depart: Thu Nov 2 2017 Return: Sun Nov 5 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 10m
nonstop
ORD
ATL
2h 05m
nonstop
Depart: Tue Sep 5 2017 Return: Tue Sep 12 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
BOS
ORD
2h 46m
nonstop
ORD
BOS
2h 30m
nonstop
Depart: Fri Dec 8 2017 Return: Sun Dec 10 2017 Trip spans 3 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 11m
nonstop
ORD
ATL
2h 04m
nonstop
Depart: Thu Dec 28 2017 Return: Wed Jan 3 2018 Trip spans 7 days
United
United
BOS
ORD
3h 00m
nonstop
ORD
BOS
2h 17m
nonstop
Depart: Wed Oct 25 2017 Return: Sat Oct 28 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
BOS
ORD
2h 39m
nonstop
ORD
BOS
2h 30m
nonstop
Depart: Wed Dec 13 2017 Return: Sun Dec 17 2017 Trip spans 5 days
Spirit Airlines
Spirit Airlines
ATL
ORD
2h 11m
nonstop
ORD
ATL
1h 59m
nonstop
Depart: Wed Nov 1 2017 Return: Sat Nov 4 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
BOS
ORD
2h 52m
nonstop
ORD
BOS
2h 20m
nonstop
Depart: Sat Sep 2 2017 Return: Thu Sep 7 2017 Trip spans 6 days
Delta
Delta
BWI
MDW
6h 09m
1 stop
MDW
BWI
4h 59m
1 stop
Depart: Sat Sep 23 2017 Return: Mon Sep 25 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
BOS
ORD
2h 45m
nonstop
ORD
BOS
2h 33m
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

Baltimore
$83
Atlanta
$83
Boston
$113
Destination

Chicago
only $83
only $164
Airlines Airline reviews

304 travelers who booked a flight from Atlanta to Chicago rated their chosen airlines with an average of 6.4.

Overall
6.7
Boarding
6.8
Crew
7.4
Comfort
6.3
Food
5.3
Entertainment
5.5