Find Cheap Flights from Chicago to United States

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 from Chicago to United States

(Round-trip)
Depart: Mon Jul 3 2017 Return: Wed Jul 5 2017 Trip spans 3 days
Delta
Delta
MDW
DEN
5h 08m
1 stop
DEN
MDW
7h 40m
1 stop
Depart: Tue Aug 1 2017 Return: Wed Aug 2 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
ORD
ATL
2h 03m
nonstop
ATL
ORD
2h 08m
nonstop
Depart: Thu Jun 29 2017 Return: Tue Jul 4 2017 Trip spans 6 days
Major Airline
Major Airline
ORD
ATL
0h 12m
nonstop
ATL
ORD
2h 12m
nonstop
Depart: Tue Aug 29 2017 Return: Wed Aug 30 2017 Trip spans 2 days
Delta
Delta
MDW
DEN
7h 10m
1 stop
DEN
MDW
4h 30m
1 stop
Depart: Tue Jul 18 2017 Return: Wed Jul 19 2017 Trip spans 2 days
Major Airline
Major Airline
ORD
ATL
1h 52m
nonstop
ATL
ORD
2h 10m
nonstop
Depart: Sun Sep 3 2017 Return: Wed Sep 6 2017 Trip spans 4 days
Delta
Delta
MDW
DEN
5h 42m
1 stop
DEN
MDW
4h 30m
1 stop
Depart: Fri Sep 8 2017 Return: Mon Sep 11 2017 Trip spans 4 days
Frontier
Frontier
ORD
ATL
17h 06m
1 stop
ATL
ORD
13h 56m
1 stop
Depart: Mon Oct 2 2017 Return: Wed Oct 4 2017 Trip spans 3 days
Delta
Delta
MDW
DEN
7h 37m
1 stop
DEN
MDW
6h 24m
1 stop
Depart: Mon Aug 14 2017 Return: Fri Aug 18 2017 Trip spans 5 days
Major Airline
Major Airline
ORD
ATL
1h 52m
nonstop
ATL
ORD
2h 10m
nonstop
Depart: Sat Oct 14 2017 Return: Wed Oct 18 2017 Trip spans 5 days
Delta
Delta
MDW
DEN
5h 20m
1 stop
DEN
MDW
5h 19m
1 stop
Depart: Fri Oct 27 2017 Return: Sun Oct 29 2017 Trip spans 3 days
Major Airline
Major Airline
ORD
ATL
1h 58m
nonstop
ATL
ORD
2h 09m
nonstop
Depart: Sat Sep 30 2017 Return: Sun Oct 1 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
MDW
LAX
4h 25m
nonstop
LAX
MDW
6h 34m
1 stop
Depart: Sat Nov 4 2017 Return: Sat Nov 11 2017 Trip spans 8 days
Delta
Delta
MDW
DEN
6h 02m
1 stop
DEN
MDW
6h 28m
1 stop
Depart: Sat Nov 11 2017 Return: Tue Nov 14 2017 Trip spans 4 days
Delta
Delta
MDW
DEN
6h 15m
1 stop
DEN
MDW
5h 18m
1 stop
Depart: Sat Dec 16 2017 Return: Sun Jan 14 2018 Trip spans 30 days
Major Airline
Major Airline
MDW
SFO
5h 41m
nonstop
SFO
MDW
1h 41m
nonstop
Depart: Sat Dec 9 2017 Return: Mon Dec 11 2017 Trip spans 3 days
Delta
Delta
MDW
DEN
4h 39m
1 stop
DEN
MDW
5h 04m
1 stop
Depart: Tue Jul 11 2017 Return: Tue Jul 18 2017 Trip spans 8 days
Delta
Delta
ORD
ATL
1h 59m
nonstop
ATL
ORD
2h 12m
nonstop
Depart: Wed Oct 18 2017 Return: Sun Oct 22 2017 Trip spans 5 days
Major Airline
Major Airline
MDW
SFO
5h 41m
nonstop
SFO
MDW
1h 41m
nonstop
Depart: Tue Aug 15 2017 Return: Tue Aug 22 2017 Trip spans 8 days
Delta
Delta
ORD
ATL
1h 59m
nonstop
ATL
ORD
2h 23m
nonstop
Depart: Fri Jul 7 2017 Return: Tue Jul 11 2017 Trip spans 5 days
Delta
Delta
MDW
DEN
6h 57m
1 stop
DEN
MDW
7h 08m
1 stop
* 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

Chicago
only $197
only $184
Destination

San Francisco
$255
Atlanta
$197
Los Angeles
$263
Denver
$184