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Cheap flights from Chicago to Bulgaria from $256

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Bulgaria departing on 1/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Chicago to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
12:50 pm - 9:10 am
ORD
-
VAR
13h 20m1 stop
Turkish Airlines Logo
9:35 am - 6:15 pm
VAR
-
ORD
16h 40m1 stop
$515Turkish Airlines
Tue, Mar 17 - Tue, Mar 31
Turkish Airlines Logo
11:25 am - 3:00 pm
ORD
-
SOF
19h 35m1 stop
Turkish Airlines Logo
9:35 am - 10:05 pm
SOF
-
ORD
20h 30m1 stop
$556Turkish Airlines
Tue, May 5 - Wed, Oct 21
Turkish Airlines Logo
11:50 am - 3:10 pm
ORD
-
SOF
19h 20m1 stop
Turkish Airlines Logo
9:35 am - 7:25 pm
SOF
-
ORD
16h 50m1 stop
$561Turkish Airlines
Fri, Mar 6 - Mon, Mar 9
Multiple Airlines Logo
5:50 pm - 6:00 pm
ORD
-
SOF
16h 10m2 stops
Multiple Airlines Logo
6:25 am - 1:25 pm
SOF
-
ORD
15h 00m1 stop
$569Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Lufthansa Logo
6:25 pm - 10:45 pm
ORD
-
SOF
20h 20m1 stop
Lufthansa Logo
6:00 am - 3:20 pm
SOF
-
ORD
17h 20m1 stop
$576Lufthansa
Sun, Dec 28 - Thu, Jan 15
LOT Logo
9:55 pm - 5:50 pm
ORD
-
SOF
11h 55m1 stop
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m1 stop
$578LOT
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
12:46 pm - 1:55 pm
MDW
-
SOF
17h 09m2 stops
Multiple Airlines Logo
7:00 am - 5:40 pm
SOF
-
MDW
18h 40m2 stops
$624Multiple Airlines
Tue, Feb 24 - Sun, Mar 8
KLM Logo
1:00 pm - 2:00 pm
MDW
-
SOF
17h 00m2 stops
KLM Logo
7:00 am - 4:25 pm
SOF
-
MDW
17h 25m2 stops
$628KLM
Mon, Apr 20 - Mon, Apr 27
KLM Logo
1:28 pm - 2:05 pm
MDW
-
SOF
16h 37m2 stops
KLM Logo
7:00 am - 5:55 pm
SOF
-
MDW
17h 55m2 stops
$630KLM
Wed, Mar 4 - Mon, Mar 9
Lufthansa Logo
9:50 pm - 3:15 pm
ORD
-
VAR
33h 25m2 stops
Lufthansa Logo
4:00 pm - 12:10 pm
VAR
-
ORD
27h 10m2 stops
$654Lufthansa
Tue, Feb 24 - Mon, Mar 9

United Airlines flights from Chicago to Bulgaria

Our best United Airlines deals on Chicago to Bulgaria flight tickets
United Airlines
Jan 29
ORD9:50 pmChicago O'Hare Intl
16h 55m
1 stop
SOF10:45 pmSofia
Feb 2
SOF6:10 amSofia
17h 10m
1 stop
ORD3:20 pmChicago O'Hare Intl
$611
Find similar
United Airlines
Jan 29
ORD6:00 pmChicago O'Hare Intl
20h 45m
1 stop
SOF10:45 pmSofia
Feb 2
SOF6:10 amSofia
22h 00m
2 stops
ORD8:10 pmChicago O'Hare Intl
$614
Find similar
United Airlines
Dec 30
ORD8:51 amChicago O'Hare Intl
20h 24m
2 stops
SOF1:15 pmSofia
Jan 14
SOF6:05 amSofia
20h 20m
1 stop
ORD6:25 pmChicago O'Hare Intl
$616
Find similar

KLM flights from Chicago to Bulgaria

Our best KLM deals on Chicago to Bulgaria flight tickets
KLM
Apr 20
MDW1:00 pmChicago Midway
17h 00m
2 stops
SOF2:00 pmSofia
Apr 27
SOF7:00 amSofia
17h 25m
2 stops
MDW4:25 pmChicago Midway
$628
Find similar
KLM
Mar 4
MDW1:28 pmChicago Midway
16h 37m
2 stops
SOF2:05 pmSofia
Mar 9
SOF7:00 amSofia
17h 55m
2 stops
MDW5:55 pmChicago Midway
$630
Find similar
KLM
Jan 10
MDW1:28 pmChicago Midway
16h 37m
2 stops
SOF2:05 pmSofia
Feb 2
SOF7:00 amSofia
18h 29m
2 stops
MDW5:29 pmChicago Midway
$672
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago to Bulgaria that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Chicago to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Tue 3/17

12:50 pm-9:10 am

1 stop13h 20m

Varna

Tue 3/31

9:35 am-6:15 pm

1 stop16h 40m

$515

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 5/5

11:25 am-3:00 pm

1 stop19h 35m

Sofia

Wed 10/21

9:35 am-10:05 pm

1 stop20h 30m

$556

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 3/6

11:50 am-3:10 pm

1 stop19h 20m

Sofia

Mon 3/9

9:35 am-7:25 pm

1 stop16h 50m

$561

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 1/31

5:50 pm-6:00 pm

2 stops16h 10m

Sofia

Sat 2/7

6:25 am-1:25 pm

1 stop15h 00m

$569

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 12/28

6:25 pm-10:45 pm

1 stop20h 20m

Sofia

Thu 1/15

6:00 am-3:20 pm

1 stop17h 20m

$576

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 1/31

9:55 pm-5:50 pm

1 stop11h 55m

Sofia

Sat 2/7

2:35 pm-8:00 pm

1 stop13h 25m

$578

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Tue 2/24

12:46 pm-1:55 pm

2 stops17h 09m

Sofia

Sun 3/8

7:00 am-5:40 pm

2 stops18h 40m

$624

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Mon 4/20

1:00 pm-2:00 pm

2 stops17h 00m

Sofia

Mon 4/27

7:00 am-4:25 pm

2 stops17h 25m

$628

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Wed 3/4

1:28 pm-2:05 pm

2 stops16h 37m

Sofia

Mon 3/9

7:00 am-5:55 pm

2 stops17h 55m

$630

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Tue 2/24

9:50 pm-3:15 pm

2 stops33h 25m

Varna

Mon 3/9

4:00 pm-12:10 pm

2 stops27h 10m

$654

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bulgaria from

How to get the cheapest flight ticket from Chicago to Bulgaria

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bulgaria?

If you aren’t able to travel to Bulgaria during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $587.

What is the cheapest day to depart on your flight to Bulgaria?

The cheapest day to depart from Chicago to Bulgaria is on a Thursday when prices can be found for as low as $885. On the other hand, Monday is the most expensive day to depart from Chicago because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,047.

What is the cheapest time of day to depart on your flight to Bulgaria?

In the morning is the cheapest time of day to fly from Chicago to Bulgaria when you can find flight prices for as low as $751. Flying to Bulgaria in the morning is an ideal time because this is during off-peak travel hours. Flights to Bulgaria are more costly at noon, with an average ticket price of $1,107. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Bulgaria?

You are more likely to see cheaper flights to Bulgaria from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $753 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bulgaria from Chicago for as low as $716 on momondo.

Can stopping save me money on Chicago to Bulgaria flights?

You could potentially save up to 14% on your flight if you consider stops on a Chicago to Bulgaria flight.

Cheap Chicago to Bulgaria flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Bulgaria

Fastest flight time

13h 20m

Direct flights

None
The fastest flight from Chicago to Bulgaria takes 13h 20m
There are no direct flights from Chicago to Bulgaria. There are no popular flight routes from Chicago to Bulgaria.
Search flight deals

  • When did momondo last update prices for flights from Chicago to Bulgaria?

    Prices for flights from Chicago to Bulgaria were last updated today.

  • How many operators does momondo search for flights from Chicago to Bulgaria?

  • How old do you have to be to fly from Chicago to Bulgaria?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Bulgaria.

  • What documentation or ID do you need to fly to Bulgaria?

    The necessary travel and health documents for your Bulgaria trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Chicago to Bulgaria

Compare and see reviews for airlines that fly from Chicago to Bulgaria with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $511Free CancellationRating
7.3
4,105 reviews
Search Turkish Airlines flights
KLMPriceFrom $569Free CancellationRating
7.7
1,428 reviews
Search KLM flights
Air FrancePriceFrom $585Free CancellationRating
7.4
1,507 reviews
Search Air France flights
United AirlinesPriceFrom $585Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
LOTPriceFrom $587Free CancellationRating
7.5
1,149 reviews
Search LOT flights
LufthansaPriceFrom $588Free CancellationRating
6.8
7,635 reviews
Search Lufthansa flights
SWISSPriceFrom $593Free CancellationRating
7.5
1,815 reviews
Search SWISS flights
Austrian AirlinesPriceFrom $606Free CancellationRating
7.6
879 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $611Free CancellationRating
6.7
7,585 reviews
Search British Airways flights
Air SerbiaPriceFrom $632Free CancellationRating
6.2
210 reviews
Search Air Serbia flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Bulgaria?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Bulgaria for you.

Can I find flights from Chicago to Bulgaria with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to Bulgaria flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Bulgaria?

momondo provides multiple filters to help you find the best flight to Bulgaria from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Chicago to Bulgaria right now. Can momondo alert me if prices change?

Price alerts on flights to Bulgaria from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Bulgaria trip

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