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: Fri Dec 8 2017 Return: Fri Dec 22 2017 Trip spans 15 days
Multiple Airlines
Multiple Airlines
ORD
SOF
13h 05m
1 stop
SOF
ORD
14h 00m
1 stop
Depart: Mon Sep 18 2017 Return: Thu Sep 28 2017 Trip spans 11 days
Qatar Airways
Qatar Airways
ORD
SOF
39h 30m
1 stop
SOF
ORD
33h 10m
1 stop
Depart: Sat Aug 5 2017 Return: Mon Sep 18 2017 Trip spans 45 days
Turkish Airlines
Turkish Airlines
ORD
SOF
27h 25m
1 stop
SOF
ORD
27h 55m
1 stop
Depart: Tue Jul 25 2017 Return: Fri Aug 25 2017 Trip spans 32 days
Lufthansa
Lufthansa
ORD
SOF
13h 10m
1 stop
SOF
ORD
22h 50m
2 stops
Depart: Fri Sep 1 2017 Return: Fri Sep 29 2017 Trip spans 29 days
Major Airline
Major Airline
ORD
SOF
12h 35m
1 stop
SOF
ORD
18h 54m
2 stops
Depart: Wed Dec 13 2017 Return: Sun Dec 31 2017 Trip spans 19 days
KLM
KLM
MDW
SOF
16h 20m
2 stops
SOF
MDW
23h 13m
2 stops
Depart: Tue Jun 27 2017 Return: Tue Aug 1 2017 Trip spans 36 days
$1006
Select
British Airways
British Airways
ORD
SOF
31h 00m
1 stop
SOF
ORD
29h 35m
2 stops
Depart: Tue Oct 3 2017 Return: Tue Oct 17 2017 Trip spans 15 days
Qatar Airways
Qatar Airways
ORD
SOF
32h 20m
1 stop
SOF
ORD
26h 20m
1 stop
Depart: Sun Jul 16 2017 Return: Wed Aug 16 2017 Trip spans 32 days
$1365
Select
Air France
Air France
MDW
SOF
15h 20m
2 stops
SOF
MDW
16h 51m
2 stops
Depart: Mon Dec 25 2017 Return: Sun Jan 21 2018 Trip spans 28 days
Multiple Airlines
Multiple Airlines
ORD
SOF
13h 05m
1 stop
SOF
ORD
27h 40m
1 stop
Depart: Mon Aug 21 2017 Return: Fri Sep 1 2017 Trip spans 12 days
Multiple Airlines
Multiple Airlines
ORD
SOF
17h 15m
1 stop
SOF
ORD
13h 30m
1 stop
Depart: Thu Jul 27 2017 Return: Mon Aug 14 2017 Trip spans 19 days
Lufthansa
Lufthansa
ORD
SOF
13h 05m
1 stop
SOF
ORD
23h 05m
2 stops
Depart: Sat Aug 5 2017 Return: Mon Aug 21 2017 Trip spans 17 days
Multiple Airlines
Multiple Airlines
ORD
SOF
19h 15m
2 stops
SOF
ORD
33h 30m
2 stops
Depart: Sat Jul 8 2017 Return: Thu Jul 20 2017 Trip spans 13 days
$1113
Select
Turkish Airlines
Turkish Airlines
ORD
VAR
20h 45m
1 stop
VAR
ORD
21h 40m
1 stop
Depart: Mon Aug 21 2017 Return: Wed Sep 13 2017 Trip spans 24 days
Multiple Airlines
Multiple Airlines
MDW
SOF
15h 25m
2 stops
SOF
MDW
17h 39m
2 stops
Depart: Mon Jul 3 2017 Return: Fri Jul 28 2017 Trip spans 26 days
$1400
Select
Air France
Air France
MDW
SOF
15h 20m
2 stops
SOF
MDW
16h 54m
2 stops
Depart: Sun Aug 6 2017 Return: Thu Aug 17 2017 Trip spans 12 days
$1091
Select
Multiple Airlines
Multiple Airlines
ORD
VAR
33h 40m
2 stops
VAR
ORD
33h 55m
2 stops
Depart: Fri Sep 1 2017 Return: Sat Sep 30 2017 Trip spans 30 days
$1614
Select
KLM
KLM
MDW
SOF
17h 35m
2 stops
SOF
MDW
21h 01m
2 stops
Depart: Wed Jul 19 2017 Return: Fri Aug 4 2017 Trip spans 17 days
$1217
Select
Multiple Airlines
Multiple Airlines
MDW
SOF
19h 55m
2 stops
SOF
MDW
20h 02m
2 stops
Depart: Tue Jun 27 2017 Return: Tue Aug 1 2017 Trip spans 36 days
$1969
Select
Air France
Air France
MDW
SOF
14h 52m
2 stops
SOF
MDW
16h 54m
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 $544
only $874
Destination

Varna
$1091
Sofia
$544