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.
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Book cheap flights from Chicago to Bulgaria

(Round-trip)
Depart: Tue Sep 5 2017 Return: Thu Oct 5 2017 Trip spans 31 days
Qatar Airways
Qatar Airways
ORD
SOF
32h 20m
1 stop
SOF
ORD
33h 10m
1 stop
Depart: Tue Aug 1 2017 Return: Wed Sep 20 2017 Trip spans 51 days
Turkish Airlines
Turkish Airlines
ORD
SOF
15h 05m
1 stop
SOF
ORD
27h 55m
1 stop
Depart: Sat Jun 10 2017 Return: Sun Jun 18 2017 Trip spans 9 days
British Airways
British Airways
ORD
SOF
31h 41m
2 stops
SOF
ORD
27h 55m
1 stop
Depart: Tue Jul 4 2017 Return: Tue Jul 25 2017 Trip spans 22 days
Lufthansa
Lufthansa
ORD
SOF
17h 20m
1 stop
SOF
ORD
22h 49m
2 stops
Depart: Mon Sep 11 2017 Return: Wed Sep 27 2017 Trip spans 17 days
KLM
KLM
MDW
SOF
17h 35m
2 stops
SOF
MDW
18h 58m
2 stops
Depart: Fri Sep 8 2017 Return: Fri Sep 15 2017 Trip spans 8 days
Aer Lingus
Aer Lingus
ORD
BOJ
16h 20m
1 stop
BOJ
ORD
33h 25m
1 stop
Depart: Sun Aug 13 2017 Return: Sun Sep 3 2017 Trip spans 22 days
Air France
Air France
MDW
SOF
14h 50m
2 stops
SOF
MDW
16h 49m
2 stops
Depart: Wed Oct 11 2017 Return: Thu Oct 26 2017 Trip spans 16 days
Qatar Airways
Qatar Airways
ORD
SOF
39h 30m
1 stop
SOF
ORD
33h 10m
1 stop
Depart: Mon Jun 12 2017 Return: Wed Jul 19 2017 Trip spans 38 days
British Airways
British Airways
ORD
SOF
31h 41m
2 stops
SOF
ORD
32h 05m
2 stops
Depart: Mon Jul 17 2017 Return: Fri Sep 1 2017 Trip spans 47 days
Turkish Airlines
Turkish Airlines
ORD
SOF
27h 25m
1 stop
SOF
ORD
15h 35m
1 stop
Depart: Sat May 27 2017 Return: Sat Jun 10 2017 Trip spans 15 days
British Airways
British Airways
ORD
SOF
20h 25m
1 stop
SOF
ORD
28h 15m
1 stop
Depart: Sun Sep 3 2017 Return: Wed Sep 6 2017 Trip spans 4 days
Qatar Airways
Qatar Airways
ORD
SOF
39h 30m
1 stop
SOF
ORD
26h 20m
1 stop
Depart: Mon Oct 9 2017 Return: Sat Oct 21 2017 Trip spans 13 days
KLM
KLM
MDW
SOF
17h 35m
2 stops
SOF
MDW
21h 31m
2 stops
Depart: Tue Aug 29 2017 Return: Mon Sep 11 2017 Trip spans 14 days
Turkish Airlines
Turkish Airlines
ORD
VAR
20h 45m
1 stop
VAR
ORD
21h 40m
1 stop
Depart: Thu May 18 2017 Return: Tue Jun 6 2017 Trip spans 20 days
KLM
KLM
MDW
SOF
17h 40m
2 stops
SOF
MDW
20h 01m
2 stops
Depart: Wed Oct 4 2017 Return: Sun Oct 15 2017 Trip spans 12 days
Turkish Airlines
Turkish Airlines
ORD
VAR
32h 05m
1 stop
VAR
ORD
33h 45m
1 stop
Depart: Tue Aug 1 2017 Return: Wed Sep 20 2017 Trip spans 51 days
KLM
KLM
MDW
SOF
17h 35m
2 stops
SOF
MDW
17h 39m
2 stops
Depart: Mon Jul 3 2017 Return: Tue Aug 15 2017 Trip spans 44 days
$1122
Select
Air France
Air France
MDW
SOF
14h 50m
2 stops
SOF
MDW
16h 49m
2 stops
Depart: Sun Apr 30 2017 Return: Fri May 12 2017 Trip spans 13 days
Turkish Airlines
Turkish Airlines
ORD
VAR
20h 45m
1 stop
VAR
ORD
21h 40m
1 stop
Depart: Thu Jul 20 2017 Return: Sat Sep 2 2017 Trip spans 45 days
$1122
Select
Air France
Air France
MDW
SOF
14h 50m
2 stops
SOF
MDW
16h 47m
2 stops
* 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,
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Airports
Origin

Chicago
only $663
only $869
Destination

Varna
$835
Sofia
$663
Burgas
$950