How long does it take to fly to Chicago?

Average flight duration from Bulgaria to Chicago depends on which airport you fly into and out of. Flying from Sofia to Chicago O'Hare Intl Airport is 13h 40m on average, while flying from Burgas to Chicago O'Hare Intl Airport is 37h 15m on average. Chicago O'Hare Intl Airport is the most popular airport in Chicago.

What airlines fly to Chicago?

Lufthansa, LOT and Turkish Airlines are the top three most popular airlines that fly to Chicago from Bulgaria according to our data. Lufthansa is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 7 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

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

Qatar Airways is the most popular carrier operating from Bulgaria to Chicago

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

Prices for flights from Bulgaria to Chicago refresh daily.

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

There are 7 operators available for flights from Bulgaria to Chicago as of August 2025.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Bulgaria to Chicago.

What documentation or ID do you need to fly to Chicago?

The necessary travel and health documents for your Chicago 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.

$333 Cheap Flights from Bulgaria to Chicago in 2025

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Find the cheapest flights from Bulgaria to Chicago

Round-trip

One-way

Last minute

Recent round-trip flight deals from Bulgaria to Chicago

4:00 pm - 12:55 pmVAR-ORD

28h 55m2 stops

4:20 pm - 3:15 pmORD-VAR

14h 55m1 stop

$618

Find Deal

jue., oct. 16 - lun., oct. 20

6:10 am - 1:10 pmSOF-ORD

15h 00m1 stop

4:20 pm - 6:00 pmORD-SOF

17h 40m1 stop

$645United Airlines

Find Deal

vie., dic. 12 - jue., mar. 5

6:40 pm - 3:10 pmSOF-ORD

28h 30m1 stop

9:55 pm - 5:50 pmORD-SOF

35h 55m2 stops

$647LOT

Find Deal

sáb., oct. 11 - dom., feb. 22

6:40 pm - 3:10 pmSOF-ORD

28h 30m1 stop

9:55 pm - 5:50 pmORD-SOF

11h 55m1 stop

$660LOT

Find Deal

lun., sep. 15 - lun., nov. 17

7:00 am - 2:40 pmSOF-ORD

15h 40m1 stop

4:40 pm - 2:00 pmORD-SOF

13h 20m1 stop

$663KLM

Find Deal

lun., sep. 22 - mié., oct. 8

3:35 pm - 5:55 pmSOF-ORD

34h 20m1 stop

8:20 pm - 3:10 pmORD-SOF

34h 50m1 stop

$664Turkish Airlines

Find Deal

dom., oct. 12 - mar., nov. 11

6:15 am - 11:00 amSOF-ORD

12h 45m1 stop

9:50 pm - 6:20 pmORD-SOF

12h 30m1 stop

$671Lufthansa

Find Deal

sáb., sep. 6 - dom., nov. 9

3:35 pm - 9:40 amSOF-ORD

26h 05m1 stop

8:20 pm - 3:10 pmORD-SOF

34h 50m1 stop

$672Turkish Airlines

Find Deal

mié., oct. 15 - mar., nov. 11

7:00 am - 4:09 pmSOF-MDW

17h 09m2 stops

3:00 pm - 2:05 pmMDW-SOF

15h 05m2 stops

$675KLM

Find Deal

jue., oct. 16 - sáb., nov. 8

6:15 am - 12:55 pmSOF-ORD

14h 40m1 stop

4:00 pm - 1:05 pmORD-SOF

13h 05m1 stop

$702Lufthansa

Find Deal

mié., sep. 17 - vie., may. 15

KLM flights from Bulgaria to Chicago

Our best KLM deals on Bulgaria to Chicago flight tickets

KLM

Sep 22

SOF7:00 amSofia

15h 40m

1 stop

ORD2:40 pmChicago O'Hare Intl

Oct 8

ORD4:40 pmChicago O'Hare Intl

13h 20m

1 stop

SOF2:00 pmSofia

$663

Find similar

KLM

Oct 16

SOF7:00 amSofia

17h 09m

2 stops

MDW4:09 pmChicago Midway

Nov 8

MDW3:00 pmChicago Midway

15h 05m

2 stops

SOF2:05 pmSofia

$675

Find similar

KLM

Sep 4

SOF7:00 amSofia

15h 10m

1 stop

ORD2:10 pmChicago O'Hare Intl

Dec 12

ORD4:25 pmChicago O'Hare Intl

13h 40m

1 stop

SOF2:05 pmSofia

$718

Find similar

Austrian Airlines flights from Bulgaria to Chicago

Our best Austrian Airlines deals on Bulgaria to Chicago flight tickets

Austrian Airlines

Sep 21

VAR9:35 pmVarna

28h 50m

2 stops

ORD6:25 pmChicago O'Hare Intl

Sep 28

ORD4:20 pmChicago O'Hare Intl

14h 55m

1 stop

VAR3:15 pmVarna

$668

Find similar

Austrian Airlines

Sep 21

VAR9:35 pmVarna

22h 30m

2 stops

ORD12:05 pmChicago O'Hare Intl

Sep 28

ORD3:45 pmChicago O'Hare Intl

15h 30m

2 stops

VAR3:15 pmVarna

$759

Find similar

Austrian Airlines

Sep 1

SOF6:55 pmSofia

26h 25m

1 stop

ORD1:20 pmChicago O'Hare Intl

Nov 15

ORD1:00 pmChicago O'Hare Intl

14h 50m

2 stops

SOF11:50 amSofia

$822

Find similar

Fly from

Fly to

Route

Depart

Return

Price

VarnaChicago

VAR - ORD

VARORD

Varna

jue. 10/16

4:00 pm-12:55 pm

2 stops28h 55m

Chicago O'Hare Intl

lun. 10/20

4:20 pm-3:15 pm

1 stop14h 55m

$618

SofiaChicago

SOF - ORD

SOFORD

Sofia

vie. 12/12

6:10 am-1:10 pm

1 stop15h 00m

Chicago O'Hare Intl

jue. 3/5

4:20 pm-6:00 pm

1 stop17h 40m

$645

SofiaChicago

SOF - ORD

SOFORD

Sofia

sáb. 10/11

6:40 pm-3:10 pm

1 stop28h 30m

Chicago O'Hare Intl

dom. 2/22

9:55 pm-5:50 pm

2 stops35h 55m

$647

SofiaChicago

SOF - ORD

SOFORD

Sofia

lun. 9/15

6:40 pm-3:10 pm

1 stop28h 30m

Chicago O'Hare Intl

lun. 11/17

9:55 pm-5:50 pm

1 stop11h 55m

$660

SofiaChicago

SOF - ORD

SOFORD

Sofia

lun. 9/22

7:00 am-2:40 pm

1 stop15h 40m

Chicago O'Hare Intl

mié. 10/8

4:40 pm-2:00 pm

1 stop13h 20m

$663

SofiaChicago

SOF - ORD

SOFORD

Sofia

dom. 10/12

3:35 pm-5:55 pm

1 stop34h 20m

Chicago O'Hare Intl

mar. 11/11

8:20 pm-3:10 pm

1 stop34h 50m

$664

SofiaChicago

SOF - ORD

SOFORD

Sofia

sáb. 9/6

6:15 am-11:00 am

1 stop12h 45m

Chicago O'Hare Intl

dom. 11/9

9:50 pm-6:20 pm

1 stop12h 30m

$671

SofiaChicago

SOF - ORD

SOFORD

Sofia

mié. 10/15

3:35 pm-9:40 am

1 stop26h 05m

Chicago O'Hare Intl

mar. 11/11

8:20 pm-3:10 pm

1 stop34h 50m

$672

SofiaChicago

SOF - MDW

SOFMDW

Sofia

jue. 10/16

7:00 am-4:09 pm

2 stops17h 09m

Chicago Midway

sáb. 11/8

3:00 pm-2:05 pm

2 stops15h 05m

$675

SofiaChicago

SOF - ORD

SOFORD

Sofia

mié. 9/17

6:15 am-12:55 pm

1 stop14h 40m

Chicago O'Hare Intl

vie. 5/15

4:00 pm-1:05 pm

1 stop13h 05m

$702

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 Bulgaria to Chicago

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

Other information

What is the cheapest month to fly to Chicago?

The month of November is, on average, the cheapest month to fly to Chicago from Bulgaria, with most prices found around $645. If you’re not able to fly to Chicago in November, then October is your next best option. Flight prices from Bulgaria to Chicago during October average around $654.

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

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as $666. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Bulgaria to Chicago for around $785.

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

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Bulgaria to Chicago during this time can be as low as $666. In contrast, the most expensive time of day to depart to Chicago is in the evening when prices are around $768.

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

You are more likely to see cheaper flights to Chicago from Bulgaria when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $706 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Bulgaria for as low as $625 on momondo.

Cheap Bulgaria to Chicago flight deals and tips

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

Direct flights	None

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

Search flight deals

When did momondo last update prices for flights from Bulgaria to Chicago?
Prices for flights from Bulgaria to Chicago refresh daily.
How many operators does momondo search for flights from Bulgaria to Chicago?
There are 7 operators available for flights from Bulgaria to Chicago as of August 2025.
How old do you have to be to fly from Bulgaria to Chicago?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Bulgaria to Chicago.
What documentation or ID do you need to fly to Chicago?
The necessary travel and health documents for your Chicago 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 Bulgaria to Chicago

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

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $460	Free Cancellation	Rating 7.8 1,388 reviews	Search KLM flights
LOT	PriceFrom $533	Free Cancellation	Rating 7.6 1,110 reviews	Search LOT flights
Air France	PriceFrom $560	Free Cancellation	Rating 7.4 1,469 reviews	Search Air France flights
Austrian Airlines	PriceFrom $576	Free Cancellation	Rating 7.6 832 reviews	Search Austrian Airlines flights
Turkish Airlines	PriceFrom $601	Free Cancellation	Rating 7.3 3,950 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $603	Free Cancellation	Rating 7.4 8,930 reviews	Search United Airlines flights
Lufthansa	PriceFrom $615	Free Cancellation	Rating 6.8 7,344 reviews	Search Lufthansa flights

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Saint John

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Bulgaria to Chicago. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Bulgaria to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Bulgaria and Chicago by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Bulgaria to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.