What is the cheapest airline that flies from Chicago to Bulgaria?

British Airways, Turkish Airlines, and Austrian Airlines are the most popular carriers operating from Chicago to Bulgaria

What airlines fly to Bulgaria?

Turkish Airlines, Lufthansa and LOT are the top three most popular airlines that fly to Bulgaria from Chicago according to our data. Turkish Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Bulgaria. Keep in mind that there are 12 different airlines that fly to Bulgaria on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Chicago to Bulgaria is 12 as of August 2026.

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.

$332 Cheap Flights from Chicago to Bulgaria in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Bulgaria

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:10 pm - 8:30 amORD Chicago O'Hare Intl-VAR Varna

28h 20m1 stop Istanbul

9:20 am - 9:40 amVAR Varna-ORD Chicago O'Hare Intl

32h 20m1 stop Istanbul

$685Turkish Airlines

Mon, Oct 5 - Tue, Oct 20

8:10 pm - 8:30 amORD Chicago O'Hare Intl-VAR Varna

28h 20m1 stop Istanbul

9:20 am - 9:40 amVAR Varna-ORD Chicago O'Hare Intl

32h 20m1 stop Istanbul

$701Turkish Airlines

Mon, Oct 5 - Tue, Oct 20

9:50 pm - 6:00 pmORD Chicago O'Hare Intl-SOF Sofia

12h 10m1 stop Warsaw Frederic Chopin

2:35 pm - 7:55 pmSOF Sofia-ORD Chicago O'Hare Intl

13h 20m1 stop Warsaw Frederic Chopin

$721LOT

Sun, Oct 18 - Sun, Nov 1

9:50 pm - 10:55 pmORD Chicago O'Hare Intl-SOF Sofia

17h 05m1 stop Munich Franz Josef Strauss

2:00 pm - 5:43 pmSOF Sofia-ORD Chicago O'Hare Intl

35h 43m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$724Multiple Airlines

Mon, Dec 28 - Mon, Jan 11

9:50 pm - 1:50 pmORD Chicago O'Hare Intl-SOF Sofia

32h 00m1 stop Warsaw Frederic Chopin

6:40 pm - 7:55 pmSOF Sofia-ORD Chicago O'Hare Intl

33h 15m1 stop Warsaw Frederic Chopin

$726LOT

Mon, Feb 22 - Mon, Mar 8

7:05 am - 1:25 pmORD Chicago O'Hare Intl-SOF Sofia

22h 20m2 stops Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

6:00 am - 5:43 pmSOF Sofia-ORD Chicago O'Hare Intl

19h 43m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$728Multiple Airlines

Tue, Dec 29 - Tue, Jan 12

9:50 pm - 10:55 pmORD Chicago O'Hare Intl-SOF Sofia

17h 05m1 stop Munich Franz Josef Strauss

7:05 pm - 6:25 pmSOF Sofia-ORD Chicago O'Hare Intl

31h 20m1 stop Munich Franz Josef Strauss

$731Lufthansa

Mon, Nov 23 - Mon, Dec 7

8:59 pm - 8:10 pmORD Chicago O'Hare Intl-SOF Sofia

39h 11m2 stops Philadelphia London Heathrow

5:15 pm - 9:00 pmSOF Sofia-ORD Chicago O'Hare Intl

35h 45m2 stops London Heathrow New York John F Kennedy Intl

$731British Airways

Mon, Jan 25 - Mon, Feb 8

9:50 pm - 6:20 pmORD Chicago O'Hare Intl-SOF Sofia

12h 30m1 stop Munich Franz Josef Strauss

7:05 pm - 6:25 pmSOF Sofia-ORD Chicago O'Hare Intl

31h 20m1 stop Munich Franz Josef Strauss

$732Lufthansa

Mon, Nov 30 - Mon, Dec 14

9:00 pm - 8:10 pmORD Chicago O'Hare Intl-SOF Sofia

39h 10m2 stops Dallas/Fort Worth London Heathrow

5:15 pm - 4:49 pmSOF Sofia-ORD Chicago O'Hare Intl

31h 34m2 stops London Heathrow New York John F Kennedy Intl

$732British Airways

Mon, Jan 25 - Mon, Feb 8

Cheap last minute flights

Enter your travel dates to find the best prices.

11:20 pm - 3:30 pmORD Chicago O'Hare Intl-SOF Sofia

32h 10m1 stop Belgrade Nikola Tesla

4:00 pm - 2:30 pmSOF Sofia-ORD Chicago O'Hare Intl

30h 30m1 stop Belgrade Nikola Tesla

$871Air Serbia

Sat, Aug 29 - Tue, Sep 15

11:20 pm - 3:30 pmORD Chicago O'Hare Intl-SOF Sofia

32h 10m1 stop Belgrade Nikola Tesla

4:00 pm - 9:15 pmSOF Sofia-ORD Chicago O'Hare Intl

13h 15m1 stop Belgrade Nikola Tesla

$871Air Serbia

Sat, Aug 29 - Sat, Sep 19

9:50 pm - 6:00 pmORD Chicago O'Hare Intl-SOF Sofia

12h 10m1 stop Warsaw Frederic Chopin

6:45 pm - 7:50 pmSOF Sofia-ORD Chicago O'Hare Intl

33h 05m1 stop Warsaw Frederic Chopin

$922LOT

Tue, Sep 1 - Mon, Oct 5

9:50 pm - 6:00 pmORD Chicago O'Hare Intl-SOF Sofia

12h 10m1 stop Warsaw Frederic Chopin

6:45 pm - 7:50 pmSOF Sofia-ORD Chicago O'Hare Intl

33h 05m1 stop Warsaw Frederic Chopin

$935LOT

Tue, Sep 1 - Mon, Oct 5

11:20 pm - 3:00 amORD Chicago O'Hare Intl-SOF Sofia

19h 40m1 stop Belgrade Nikola Tesla

9:40 pm - 12:40 pmSOF Sofia-ORD Chicago O'Hare Intl

23h 00m2 stops Barcelona-El Prat Lisbon Humberto Delgado

$969Multiple Airlines

Sat, Aug 29 - Wed, Sep 16

11:20 pm - 3:00 amORD Chicago O'Hare Intl-SOF Sofia

19h 40m1 stop Belgrade Nikola Tesla

9:40 pm - 12:40 pmSOF Sofia-ORD Chicago O'Hare Intl

23h 00m2 stops Barcelona-El Prat Lisbon Humberto Delgado

$975Multiple Airlines

Sat, Aug 29 - Wed, Sep 16

7:45 am - 6:40 pmORD Chicago O'Hare Intl-SOF Sofia

26h 55m2 stops Boston Logan Intl Munich Franz Josef Strauss

6:20 am - 12:55 pmSOF Sofia-ORD Chicago O'Hare Intl

14h 35m1 stop Frankfurt am Main

$988United Airlines

Wed, Sep 2 - Wed, Sep 30

9:07 am - 6:40 pmORD Chicago O'Hare Intl-SOF Sofia

25h 33m2 stops Boston Logan Intl Munich Franz Josef Strauss

1:50 pm - 11:32 pmSOF Sofia-ORD Chicago O'Hare Intl

17h 42m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$998United Airlines

Wed, Sep 2 - Wed, Sep 30

2:40 pm - 6:40 pmORD Chicago O'Hare Intl-SOF Sofia

20h 00m2 stops Zurich Munich Franz Josef Strauss

3:40 pm - 12:35 pmSOF Sofia-ORD Chicago O'Hare Intl

28h 55m1 stop Zurich

$1,015SWISS

Tue, Sep 1 - Mon, Sep 14

2:20 pm - 6:40 pmORD Chicago O'Hare Intl-SOF Sofia

20h 20m2 stops Zurich Munich Franz Josef Strauss

12:55 pm - 12:35 pmSOF Sofia-ORD Chicago O'Hare Intl

31h 40m2 stops Munich Franz Josef Strauss Zurich

$1,026SWISS

Sun, Aug 30 - Thu, Sep 17

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LOT flights from Chicago to Bulgaria

Our best LOT deals on Chicago to Bulgaria flight tickets

LOT

Oct 18

ORD9:50 pmChicago O'Hare Intl

12h 10m

1 stop

SOF6:00 pmSofia

Nov 1

SOF2:35 pmSofia

13h 20m

1 stop

ORD7:55 pmChicago O'Hare Intl

$721

LOT

Oct 18

ORD9:50 pmChicago O'Hare Intl

32h 00m

1 stop

SOF1:50 pmSofia

Nov 1

SOF2:35 pmSofia

13h 20m

1 stop

ORD7:55 pmChicago O'Hare Intl

$726

LOT

Sep 14

ORD9:50 pmChicago O'Hare Intl

32h 05m

1 stop

SOF1:55 pmSofia

Nov 18

SOF6:40 pmSofia

33h 15m

1 stop

ORD7:55 pmChicago O'Hare Intl

$728

Turkish Airlines flights from Chicago to Bulgaria

Our best Turkish Airlines deals on Chicago to Bulgaria flight tickets

Turkish Airlines

Oct 5

ORD8:10 pmChicago O'Hare Intl

28h 20m

1 stop

VAR8:30 amVarna

Oct 20

VAR9:20 amVarna

32h 20m

1 stop

ORD9:40 amChicago O'Hare Intl

$685

Turkish Airlines

Oct 5

ORD8:10 pmChicago O'Hare Intl

28h 20m

1 stop

VAR8:30 amVarna

Oct 20

VAR9:20 amVarna

32h 20m

1 stop

ORD9:40 amChicago O'Hare Intl

$701

Turkish Airlines

Oct 11

ORD8:10 pmChicago O'Hare Intl

17h 15m

1 stop

VAR9:25 pmVarna

Oct 18

VAR9:20 amVarna

32h 20m

1 stop

ORD9:40 amChicago O'Hare Intl

$707

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoVarna

ORD Chicago O'Hare Intl - VAR Varna

ORDVAR

Chicago O'Hare Intl

Mon 10/5

8:10 pm-8:30 am

1 stop28h 20m

Varna

Tue 10/20

9:20 am-9:40 am

1 stop32h 20m

$685

ChicagoVarna

ORD Chicago O'Hare Intl - VAR Varna

ORDVAR

Chicago O'Hare Intl

Mon 10/5

8:10 pm-8:30 am

1 stop28h 20m

Varna

Tue 10/20

9:20 am-9:40 am

1 stop32h 20m

$701

Quickest round-trip

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Sun 10/18

9:50 pm-6:00 pm

1 stop12h 10m

Sofia

Sun 11/1

2:35 pm-7:55 pm

1 stop13h 20m

$721

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Mon 12/28

9:50 pm-10:55 pm

1 stop17h 05m

Sofia

Mon 1/11

2:00 pm-5:43 pm

2 stops35h 43m

$724

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Mon 2/22

9:50 pm-1:50 pm

1 stop32h 00m

Sofia

Mon 3/8

6:40 pm-7:55 pm

1 stop33h 15m

$726

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Tue 12/29

7:05 am-1:25 pm

2 stops22h 20m

Sofia

Tue 1/12

6:00 am-5:43 pm

2 stops19h 43m

$728

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Mon 11/23

9:50 pm-10:55 pm

1 stop17h 05m

Sofia

Mon 12/7

7:05 pm-6:25 pm

1 stop31h 20m

$731

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Mon 1/25

8:59 pm-8:10 pm

2 stops39h 11m

Sofia

Mon 2/8

5:15 pm-9:00 pm

2 stops35h 45m

$731

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Mon 11/30

9:50 pm-6:20 pm

1 stop12h 30m

Sofia

Mon 12/14

7:05 pm-6:25 pm

1 stop31h 20m

$732

ChicagoSofia

ORD Chicago O'Hare Intl - SOF Sofia

ORDSOF

Chicago O'Hare Intl

Mon 1/25

9:00 pm-8:10 pm

2 stops39h 10m

Sofia

Mon 2/8

5:15 pm-4:49 pm

2 stops31h 34m

$732

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 January is also cheap. Prices for this month can be found on momondo for an average of $608.

How far in advance should I book a flight from Chicago 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 $796 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 $738 on momondo.

Can stopping save me money on Chicago to Bulgaria flights?

You could potentially save up to 16% 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

Best Price Found	$332
Fastest flight time	12h 10m
Direct flights	None

The best one-way flight to Bulgaria from Chicago in the past 72 hours is $332. The best round-trip flight deal from Chicago to Bulgaria found on momondo in the last 72 hours is $685.

The fastest flight from Chicago to Bulgaria takes 12h 10m

There are no direct flights from Chicago to Bulgaria. There are no popular flight routes from Chicago to Bulgaria.

Search flight deals

Frequently asked questions about flying from Chicago to Bulgaria

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?
The number of operators available for flights from Chicago to Bulgaria is 12 as of August 2026.
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
JetBlue	PriceFrom $451	Free Cancellation	Rating 7.1 3,035 reviews	Search JetBlue flights
Turkish Airlines	PriceFrom $525	Free Cancellation	Rating 7.4 4,485 reviews	Search Turkish Airlines flights
LOT	PriceFrom $582	Free Cancellation	Rating 7.5 1,212 reviews	Search LOT flights
Air France	PriceFrom $585	Free Cancellation	Rating 7.5 1,644 reviews	Search Air France flights
SWISS	PriceFrom $594	Free Cancellation	Rating 7.5 2,060 reviews	Search SWISS flights
United Airlines	PriceFrom $608	Free Cancellation	Rating 7.4 10,135 reviews	Search United Airlines flights
British Airways	PriceFrom $609	Free Cancellation	Rating 6.7 8,192 reviews	Search British Airways flights
Lufthansa	PriceFrom $610	Free Cancellation	Rating 6.8 8,228 reviews	Search Lufthansa flights
KLM	PriceFrom $614	Free Cancellation	Rating 7.8 1,567 reviews	Search KLM flights
Austrian Airlines	PriceFrom $701	Free Cancellation	Rating 7.6 952 reviews	Search Austrian Airlines 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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Airlines

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Complete your trip

Feeling lucky

Popular cities in Bulgaria

Flights to Sofiafrom $590

Flights to Varnafrom $687

Flights to Burgasfrom $849

Flights to Plovdivfrom $894

Cheap flights from Chicago to Bulgaria from $332

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 11/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Chicago to Bulgaria

Cheap round-trip flights

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Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

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LOT flights from Chicago to Bulgaria

Our best LOT deals on Chicago to Bulgaria flight tickets

Turkish Airlines flights from Chicago to Bulgaria

Our best Turkish Airlines deals on Chicago to Bulgaria flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Chicago to Bulgaria that are best for you.

See travel insights to Bulgaria from

How to get the cheapest flight ticket from Chicago to Bulgaria

What is the cheapest month to fly to Bulgaria?

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

Can stopping save me money on Chicago to Bulgaria flights?

What is the cheapest airline that flies from Chicago to Bulgaria?

What airlines fly to Bulgaria?

Cheap Chicago to Bulgaria flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Chicago to Bulgaria

Best airlines flying from Chicago to Bulgaria

Compare and see reviews for airlines that fly from Chicago to Bulgaria with momondo

Why use momondo?

An easier way to manage your Bulgaria trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bulgaria

Popular cities in Bulgaria

Popular flights according to clicks in the last 7 days on momondo

Chicago flight routes

According to popular flight searches on momondo this year

Bulgaria flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Bulgaria

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Bulgaria

List of cabin classes available on flights landing in Bulgaria. Availability may vary depending on flight origin and airline.

Complete your trip to Bulgaria

Explore popular destinations other users love

According to popular flight searches on momondo this year