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: Sat Jun 10 2017 Return: Sat Jun 17 2017 Trip spans 8 days
Spirit Airlines
Spirit Airlines
DEN
ORD
2h 28m
nonstop
ORD
DEN
2h 36m
nonstop
Depart: Tue Aug 22 2017 Return: Fri Aug 25 2017 Trip spans 4 days
Major Airline
Major Airline
DEN
ORD
2h 33m
nonstop
ORD
DEN
2h 50m
nonstop
Depart: Tue Sep 19 2017 Return: Tue Sep 26 2017 Trip spans 8 days
American Airlines
American Airlines
LAX
ORD
4h 04m
nonstop
ORD
LAX
4h 33m
nonstop
Depart: Fri Jun 9 2017 Return: Fri Jun 16 2017 Trip spans 8 days
United
United
BOS
ORD
2h 44m
nonstop
ORD
BOS
2h 22m
nonstop
Depart: Wed Sep 6 2017 Return: Tue Sep 12 2017 Trip spans 7 days
Delta
Delta
LGA
ORD
2h 44m
nonstop
ORD
LGA
2h 12m
nonstop
Depart: Tue Oct 3 2017 Return: Sat Oct 7 2017 Trip spans 5 days
JetBlue
JetBlue
JFK
ORD
2h 43m
nonstop
ORD
JFK
2h 15m
nonstop
Depart: Tue Jul 11 2017 Return: Wed Jul 19 2017 Trip spans 9 days
Frontier
Frontier
TTN
ORD
2h 28m
nonstop
ORD
TTN
2h 15m
nonstop
Depart: Tue Jun 13 2017 Return: Wed Jun 14 2017 Trip spans 2 days
Spirit Airlines
Spirit Airlines
DFW
ORD
2h 27m
nonstop
ORD
DFW
2h 26m
nonstop
Depart: Thu Sep 7 2017 Return: Tue Sep 12 2017 Trip spans 6 days
Virgin America
Virgin America
LAX
ORD
4h 10m
nonstop
ORD
LAX
4h 25m
nonstop
Depart: Wed Jun 21 2017 Return: Sat Jun 24 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
DEN
ORD
2h 27m
nonstop
ORD
DEN
2h 36m
nonstop
Depart: Sun Oct 8 2017 Return: Tue Oct 10 2017 Trip spans 3 days
Southwest
Southwest
EWR
MDW
2h 20m
nonstop
MDW
EWR
1h 55m
nonstop
Depart: Thu Aug 17 2017 Return: Mon Aug 21 2017 Trip spans 5 days
Major Airline
Major Airline
DEN
ORD
2h 27m
nonstop
ORD
DEN
2h 36m
nonstop
Depart: Fri Oct 27 2017 Return: Tue Oct 31 2017 Trip spans 5 days
American Airlines
American Airlines
LAX
ORD
4h 04m
nonstop
ORD
LAX
4h 33m
nonstop
Depart: Mon Jul 10 2017 Return: Thu Jul 27 2017 Trip spans 18 days
Alaska Airlines
Alaska Airlines
LAX
ORD
4h 10m
nonstop
ORD
LAX
4h 27m
nonstop
Depart: Fri Sep 1 2017 Return: Tue Sep 5 2017 Trip spans 5 days
Major Airline
Major Airline
DEN
ORD
2h 25m
nonstop
ORD
DEN
2h 36m
nonstop
Depart: Wed Jun 7 2017 Return: Tue Jun 13 2017 Trip spans 7 days
Spirit Airlines
Spirit Airlines
BWI
ORD
2h 01m
nonstop
ORD
BWI
1h 51m
nonstop
Depart: Tue Oct 10 2017 Return: Wed Oct 11 2017 Trip spans 2 days
Delta
Delta
LGA
ORD
2h 44m
nonstop
ORD
LGA
2h 09m
nonstop
Depart: Thu Sep 7 2017 Return: Sat Sep 16 2017 Trip spans 10 days
Major Airline
Major Airline
DEN
ORD
2h 36m
nonstop
ORD
DEN
2h 54m
nonstop
Depart: Thu Jun 8 2017 Return: Mon Jun 19 2017 Trip spans 12 days
Spirit Airlines
Spirit Airlines
DEN
ORD
2h 29m
nonstop
ORD
DEN
2h 36m
nonstop
Depart: Wed Jun 7 2017 Return: Tue Jun 13 2017 Trip spans 7 days
United
United
BOS
ORD
2h 45m
nonstop
ORD
BOS
2h 20m
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.

^ The fares displayed in KAYAK ads found on other sites include all taxes and fees for economy class travel and were found by KAYAK users in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
Airports
Origin

New York
only $127
only $127
Baltimore
$102
Los Angeles
$109
Newark
$206
Denver
$93
Trenton
$168
Dallas
$93
Boston
$119
Destination

Chicago
only $93
only $206
Airlines Airline reviews

649 travelers who booked a flight from Denver to Chicago rated their chosen airlines with an average of 6.6.

Overall
6.7
Boarding
6.9
Crew
7.4
Comfort
6.5
Food
5.3
Entertainment
5.8