Find Cheap Flights to Chicago O'Hare International

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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Book cheap flights to Chicago O'Hare International

(Round-trip)
Depart: Tue Jul 11 2017 Return: Tue Aug 1 2017 Trip spans 22 days
Major Airline
Major Airline
BOS
ORD
12h 09m
nonstop
ORD
BOS
2h 26m
nonstop
Depart: Wed Sep 13 2017 Return: Sat Sep 16 2017 Trip spans 4 days
United
United
BOS
ORD
2h 45m
nonstop
ORD
BOS
2h 21m
nonstop
Depart: Sat Nov 4 2017 Return: Mon Nov 6 2017 Trip spans 3 days
American Airlines
American Airlines
BOS
ORD
2h 39m
nonstop
ORD
BOS
2h 27m
nonstop
Depart: Sun Jul 16 2017 Return: Tue Jul 18 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
DCA
ORD
2h 16m
nonstop
ORD
DCA
1h 51m
nonstop
Depart: Fri Aug 18 2017 Return: Sat Aug 19 2017 Trip spans 2 days
Spirit Airlines
Spirit Airlines
BOS
ORD
2h 47m
nonstop
ORD
BOS
2h 32m
nonstop
Depart: Tue Aug 1 2017 Return: Wed Aug 9 2017 Trip spans 9 days
Delta
Delta
ATL
ORD
2h 12m
nonstop
ORD
ATL
1h 58m
nonstop
Depart: Wed Oct 25 2017 Return: Sat Oct 28 2017 Trip spans 4 days
Major Airline
Major Airline
BOS
ORD
2h 47m
nonstop
ORD
BOS
2h 30m
nonstop
Depart: Sat Dec 2 2017 Return: Mon Dec 4 2017 Trip spans 3 days
American Airlines
American Airlines
BOS
ORD
2h 46m
nonstop
ORD
BOS
2h 27m
nonstop
Depart: Wed Aug 30 2017 Return: Fri Sep 8 2017 Trip spans 10 days
United
United
BOS
ORD
2h 49m
nonstop
ORD
BOS
2h 38m
nonstop
Depart: Wed Sep 13 2017 Return: Sun Sep 17 2017 Trip spans 5 days
United
United
BOS
ORD
2h 45m
nonstop
ORD
BOS
2h 38m
nonstop
Depart: Wed Oct 25 2017 Return: Fri Nov 3 2017 Trip spans 10 days
Major Airline
Major Airline
BOS
ORD
2h 46m
nonstop
ORD
BOS
2h 16m
nonstop
Depart: Fri Dec 1 2017 Return: Sun Dec 3 2017 Trip spans 3 days
American Airlines
American Airlines
BOS
ORD
2h 52m
nonstop
ORD
BOS
2h 21m
nonstop
Depart: Wed Jul 19 2017 Return: Tue Jul 25 2017 Trip spans 7 days
Multiple Airlines
Multiple Airlines
DCA
ORD
2h 16m
nonstop
ORD
DCA
1h 51m
nonstop
Depart: Fri Oct 27 2017 Return: Sun Oct 29 2017 Trip spans 3 days
Spirit Airlines
Spirit Airlines
BOS
ORD
2h 46m
nonstop
ORD
BOS
2h 30m
nonstop
Depart: Tue Aug 1 2017 Return: Wed Aug 2 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
DCA
ORD
2h 17m
nonstop
ORD
DCA
1h 56m
nonstop
Depart: Mon Aug 7 2017 Return: Wed Aug 9 2017 Trip spans 3 days
Major Airline
Major Airline
BWI
ORD
2h 09m
nonstop
ORD
BWI
1h 48m
nonstop
Depart: Tue Jul 11 2017 Return: Wed Jul 19 2017 Trip spans 9 days
United
United
BOS
ORD
2h 44m
nonstop
ORD
BOS
2h 22m
nonstop
Depart: Tue Jul 18 2017 Return: Thu Jul 20 2017 Trip spans 3 days
American Airlines
American Airlines
DCA
ORD
2h 12m
nonstop
ORD
DCA
1h 53m
nonstop
Depart: Mon Sep 4 2017 Return: Wed Sep 6 2017 Trip spans 3 days
Multiple Airlines
Multiple Airlines
DCA
ORD
2h 18m
nonstop
ORD
DCA
1h 54m
nonstop
Depart: Tue Oct 3 2017 Return: Wed Oct 4 2017 Trip spans 2 days
Major Airline
Major Airline
BWI
ORD
2h 08m
nonstop
ORD
BWI
1h 48m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.

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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
$151
Atlanta
$197
Washington
$157
Boston
$113
Destination

Chicago
$113
Airlines Airline reviews

322 travelers who booked a flight from Boston to Chicago rated their chosen airlines with an average of 6.2.

Overall
6.5
Boarding
6.7
Crew
7.3
Comfort
6.0
Food
5.0
Entertainment
5.2