Find Cheap Flights from Chicago to Bulgaria

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.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Chicago to Bulgaria

(Round-trip)
Depart: Sun Oct 1 2017 Return: Tue Oct 17 2017 Trip spans 17 days
Turkish Airlines
Turkish Airlines
ORD
SOF
27h 25m
1 stop
SOF
ORD
15h 35m
1 stop
Depart: Tue Sep 26 2017 Return: Tue Oct 10 2017 Trip spans 15 days
SWISS
SWISS
ORD
SOF
30h 30m
1 stop
SOF
ORD
26h 40m
1 stop
Depart: Mon Jan 1 2018 Return: Mon Jan 15 2018 Trip spans 15 days
LOT Polish Airlines
LOT Polish Airlines
ORD
SOF
11h 40m
1 stop
SOF
ORD
33h 55m
1 stop
Depart: Sun Sep 3 2017 Return: Mon Sep 18 2017 Trip spans 16 days
KLM
KLM
MDW
SOF
20h 45m
2 stops
SOF
MDW
21h 40m
2 stops
Depart: Tue Sep 26 2017 Return: Mon Oct 23 2017 Trip spans 28 days
Turkish Airlines
Turkish Airlines
ORD
SOF
27h 25m
1 stop
SOF
ORD
15h 35m
1 stop
Depart: Tue Sep 26 2017 Return: Tue Oct 10 2017 Trip spans 15 days
KLM
KLM
MDW
SOF
19h 05m
2 stops
SOF
MDW
19h 58m
2 stops
Depart: Sun Oct 1 2017 Return: Mon Oct 16 2017 Trip spans 16 days
Turkish Airlines
Turkish Airlines
ORD
SOF
27h 25m
1 stop
SOF
ORD
15h 35m
1 stop
Depart: Sun Oct 1 2017 Return: Sun Oct 29 2017 Trip spans 29 days
KLM
KLM
MDW
SOF
19h 10m
2 stops
SOF
MDW
16h 09m
2 stops
Depart: Mon Jan 1 2018 Return: Mon Jan 15 2018 Trip spans 15 days
KLM
KLM
MDW
SOF
19h 25m
2 stops
SOF
MDW
22h 08m
2 stops
Depart: Wed Nov 1 2017 Return: Wed Nov 29 2017 Trip spans 29 days
KLM
KLM
MDW
SOF
17h 00m
2 stops
SOF
MDW
19h 06m
2 stops
Depart: Fri Dec 1 2017 Return: Mon Jan 8 2018 Trip spans 39 days
KLM
KLM
MDW
SOF
17h 40m
2 stops
SOF
MDW
23h 10m
2 stops
Depart: Fri Nov 3 2017 Return: Sat Nov 11 2017 Trip spans 9 days
$1088
Select
KLM
KLM
MDW
SOF
18h 08m
2 stops
SOF
MDW
18h 54m
2 stops
Depart: Thu Aug 31 2017 Return: Mon Sep 18 2017 Trip spans 19 days
$1386
Select
KLM
KLM
MDW
SOF
15h 49m
2 stops
SOF
MDW
21h 40m
2 stops
* 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 $628
only $708
Destination

Sofia
$628