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Cheap flights from Chicago to Bulgaria from $289

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 2/25. 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.
British Airways Logo
9:45 pm - 8:10 pmORD-SOF
14h 25m1 stop
British Airways Logo
9:00 pm - 6:45 pmSOF-ORD
29h 45m1 stop
$553British Airways
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Tue, Jan 13 - Wed, Jan 28
Multiple Airlines Logo
9:50 pm - 6:20 pmORD-SOF
12h 30m1 stop
Multiple Airlines Logo
6:00 am - 8:10 pmSOF-ORD
21h 10m2 stops
$556Multiple Airlines
Find Deal
Tue, Mar 3 - Tue, Mar 17
Turkish Airlines Logo
8:20 pm - 8:50 pmORD-SOF
16h 30m1 stop
Turkish Airlines Logo
4:00 pm - 10:05 amSOF-ORD
26h 05m1 stop
$559Turkish Airlines
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Thu, Jan 15 - Thu, Jan 29
Lufthansa Logo
10:35 pm - 10:45 pmORD-SOF
16h 10m1 stop
Lufthansa Logo
6:05 am - 6:25 pmSOF-ORD
20h 20m1 stop
$562Lufthansa
Find Deal
Wed, Dec 10 - Wed, Jan 14
Turkish Airlines Logo
11:50 am - 8:50 pmORD-SOF
25h 00m1 stop
Turkish Airlines Logo
9:35 am - 10:05 amSOF-ORD
32h 30m1 stop
$563Turkish Airlines
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Tue, Jan 13 - Sun, Feb 1
LOT Logo
9:55 pm - 1:50 pmORD-SOF
31h 55m2 stops
LOT Logo
6:35 pm - 8:00 pmSOF-ORD
33h 25m1 stop
$574LOT
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Sun, Nov 30 - Mon, Dec 15
LOT Logo
9:55 pm - 5:50 pmORD-SOF
11h 55m1 stop
LOT Logo
2:35 pm - 8:00 pmSOF-ORD
13h 25m1 stop
$577LOT
Find Deal
Thu, Nov 13 - Fri, Mar 6
United Airlines Logo
9:50 pm - 6:20 pmORD-SOF
12h 30m1 stop
United Airlines Logo
6:00 am - 2:55 pmSOF-ORD
16h 55m2 stops
$579United Airlines
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Wed, Jan 14 - Tue, Jan 27
United Airlines Logo
3:35 pm - 6:20 pmORD-SOF
18h 45m2 stops
United Airlines Logo
6:00 am - 2:55 pmSOF-ORD
16h 55m2 stops
$583United Airlines
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Wed, Jan 14 - Tue, Jan 27
Lufthansa Logo
9:50 pm - 10:45 pmORD-SOF
16h 55m1 stop
Lufthansa Logo
2:35 pm - 8:05 pmSOF-ORD
13h 30m1 stop
$595Lufthansa
Find Deal
Sun, Nov 16 - Fri, Mar 6

British Airways flights from Chicago to Bulgaria

Our best British Airways deals on Chicago to Bulgaria flight tickets
British Airways
Jan 13
ORD9:45 pmChicago O'Hare Intl
14h 25m
1 stop
SOF8:10 pmSofia
Jan 28
SOF9:00 pmSofia
29h 45m
1 stop
ORD6:45 pmChicago O'Hare Intl
$553
Find similar
British Airways
Jan 13
ORD5:10 pmChicago O'Hare Intl
19h 00m
1 stop
SOF8:10 pmSofia
Jan 31
SOF12:05 pmSofia
14h 40m
1 stop
ORD6:45 pmChicago O'Hare Intl
$568
Find similar
British Airways
Nov 8
ORD4:06 pmChicago O'Hare Intl
40h 14m
2 stops
SOF4:20 pmSofia
Nov 16
SOF2:30 pmSofia
41h 07m
2 stops
ORD11:37 pmChicago O'Hare Intl
$827
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Turkish Airlines flights from Chicago to Bulgaria

Our best Turkish Airlines deals on Chicago to Bulgaria flight tickets
Turkish Airlines
Jan 15
ORD8:20 pmChicago O'Hare Intl
16h 30m
1 stop
SOF8:50 pmSofia
Jan 29
SOF4:00 pmSofia
26h 05m
1 stop
ORD10:05 amChicago O'Hare Intl
$559
Find similar
Turkish Airlines
Jan 13
ORD11:50 amChicago O'Hare Intl
25h 00m
1 stop
SOF8:50 pmSofia
Feb 1
SOF9:35 amSofia
32h 30m
1 stop
ORD10:05 amChicago O'Hare Intl
$563
Find similar
Turkish Airlines
Jan 18
ORD8:20 pmChicago O'Hare Intl
16h 30m
1 stop
SOF8:50 pmSofia
Feb 18
SOF9:40 pmSofia
20h 25m
1 stop
ORD10:05 amChicago O'Hare Intl
$564
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 November 3, 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

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 1/13

9:45 pm-8:10 pm

1 stop14h 25m

Sofia

Wed 1/28

9:00 pm-6:45 pm

1 stop29h 45m

$553

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 3/3

9:50 pm-6:20 pm

1 stop12h 30m

Sofia

Tue 3/17

6:00 am-8:10 pm

2 stops21h 10m

$556

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Thu 1/15

8:20 pm-8:50 pm

1 stop16h 30m

Sofia

Thu 1/29

4:00 pm-10:05 am

1 stop26h 05m

$559

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 12/10

10:35 pm-10:45 pm

1 stop16h 10m

Sofia

Wed 1/14

6:05 am-6:25 pm

1 stop20h 20m

$562

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 1/13

11:50 am-8:50 pm

1 stop25h 00m

Sofia

Sun 2/1

9:35 am-10:05 am

1 stop32h 30m

$563

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 11/30

9:55 pm-1:50 pm

2 stops31h 55m

Sofia

Mon 12/15

6:35 pm-8:00 pm

1 stop33h 25m

$574

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Thu 11/13

9:55 pm-5:50 pm

1 stop11h 55m

Sofia

Fri 3/6

2:35 pm-8:00 pm

1 stop13h 25m

$577

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 1/14

9:50 pm-6:20 pm

1 stop12h 30m

Sofia

Tue 1/27

6:00 am-2:55 pm

2 stops16h 55m

$579

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 1/14

3:35 pm-6:20 pm

2 stops18h 45m

Sofia

Tue 1/27

6:00 am-2:55 pm

2 stops16h 55m

$583

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 11/16

9:50 pm-10:45 pm

1 stop16h 55m

Sofia

Fri 3/6

2:35 pm-8:05 pm

1 stop13h 30m

$595

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 $759 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 $710 on momondo.

Can stopping save me money on Chicago to Bulgaria flights?

You could potentially save up to 36% 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

Direct flights

None
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
4,040 reviews
Search Turkish Airlines flights
KLMPriceFrom $533Free CancellationRating
7.7
1,405 reviews
Search KLM flights
LOTPriceFrom $570Free CancellationRating
7.6
1,133 reviews
Search LOT flights
Air FrancePriceFrom $585Free CancellationRating
7.4
1,482 reviews
Search Air France flights
LufthansaPriceFrom $590Free CancellationRating
6.8
7,545 reviews
Search Lufthansa flights
SWISSPriceFrom $593Free CancellationRating
7.5
1,775 reviews
Search SWISS flights
United AirlinesPriceFrom $600Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $606Free CancellationRating
7.6
863 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $611Free CancellationRating
6.7
7,494 reviews
Search British Airways flights
Air SerbiaPriceFrom $634Free CancellationRating
6.2
207 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.

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