Find Deals on International Flights from 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 from Chicago to worldwide

(Round-trip)
Depart: Sat Sep 16 2017 Return: Tue Sep 19 2017 Trip spans 4 days
Major Airline
Major Airline
ORD
BOS
2h 20m
nonstop
BOS
ORD
2h 53m
nonstop
Depart: Sat Nov 4 2017 Return: Tue Nov 7 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
ORD
BOS
2h 27m
nonstop
BOS
ORD
2h 52m
nonstop
Depart: Thu Jul 6 2017 Return: Wed Jul 12 2017 Trip spans 7 days
United
United
ORD
BOS
2h 25m
nonstop
BOS
ORD
2h 44m
nonstop
Depart: Sat Nov 4 2017 Return: Wed Nov 8 2017 Trip spans 5 days
American Airlines
American Airlines
ORD
BOS
2h 27m
nonstop
BOS
ORD
2h 43m
nonstop
Depart: Fri Aug 25 2017 Return: Tue Aug 29 2017 Trip spans 5 days
Spirit Airlines
Spirit Airlines
ORD
BOS
2h 32m
nonstop
BOS
ORD
2h 47m
nonstop
Depart: Sat Oct 21 2017 Return: Wed Oct 25 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
ORD
BOS
2h 20m
nonstop
BOS
ORD
2h 44m
nonstop
Depart: Tue Sep 12 2017 Return: Fri Sep 15 2017 Trip spans 4 days
United
United
ORD
BOS
2h 38m
nonstop
BOS
ORD
2h 45m
nonstop
Depart: Fri Oct 27 2017 Return: Sat Oct 28 2017 Trip spans 2 days
Major Airline
Major Airline
ORD
BOS
2h 20m
nonstop
BOS
ORD
2h 57m
nonstop
Depart: Tue Aug 8 2017 Return: Fri Aug 18 2017 Trip spans 11 days
Multiple Airlines
Multiple Airlines
ORD
BOS
2h 20m
nonstop
BOS
ORD
2h 47m
nonstop
Depart: Wed Sep 6 2017 Return: Sat Sep 9 2017 Trip spans 4 days
Spirit Airlines
Spirit Airlines
ORD
BOS
2h 32m
nonstop
BOS
ORD
2h 46m
nonstop
Depart: Mon Aug 21 2017 Return: Tue Aug 29 2017 Trip spans 9 days
Multiple Airlines
Multiple Airlines
ORD
BOS
2h 32m
nonstop
BOS
ORD
2h 46m
nonstop
Depart: Fri Jul 21 2017 Return: Sun Jul 23 2017 Trip spans 3 days
Major Airline
Major Airline
ORD
BOS
2h 24m
nonstop
BOS
ORD
2h 51m
nonstop
Depart: Tue Aug 1 2017 Return: Tue Aug 8 2017 Trip spans 8 days
United
United
ORD
BOS
2h 19m
nonstop
BOS
ORD
2h 44m
nonstop
Depart: Fri Oct 13 2017 Return: Sun Oct 15 2017 Trip spans 3 days
Spirit Airlines
Spirit Airlines
ORD
BOS
2h 30m
nonstop
BOS
ORD
2h 46m
nonstop
Depart: Fri Sep 15 2017 Return: Wed Sep 20 2017 Trip spans 6 days
Multiple Airlines
Multiple Airlines
ORD
BOS
2h 30m
nonstop
BOS
ORD
2h 39m
nonstop
Depart: Fri Nov 3 2017 Return: Sun Nov 5 2017 Trip spans 3 days
Major Airline
Major Airline
ORD
BOS
2h 30m
nonstop
BOS
ORD
2h 57m
nonstop
Depart: Sun Nov 5 2017 Return: Wed Nov 29 2017 Trip spans 25 days
WOW air
WOW air
ORD
CDG
10h 30m
1 stop
CDG
ORD
11h 10m
1 stop
Depart: Wed Oct 4 2017 Return: Sun Oct 8 2017 Trip spans 5 days
Spirit Airlines
Spirit Airlines
ORD
BOS
2h 22m
nonstop
BOS
ORD
2h 46m
nonstop
Depart: Fri Jul 21 2017 Return: Mon Jul 24 2017 Trip spans 4 days
Major Airline
Major Airline
ORD
BOS
2h 32m
nonstop
BOS
ORD
2h 47m
nonstop
Depart: Thu Jul 13 2017 Return: Sat Jul 22 2017 Trip spans 10 days
Major Airline
Major Airline
ORD
BOS
2h 22m
nonstop
BOS
ORD
2h 52m
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

Chicago
$113
Destination

Paris
$440
Boston
$113