What airlines fly to Illinois?

LOT, Lufthansa and United Airlines are the top three most popular airlines that fly to Illinois from Bulgaria according to our data. LOT is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 7 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How long is the flight from Bulgaria to Illinois?

The flight from Bulgaria to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Sofia (a popular airport in Bulgaria) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 14h 40m on average. If you fly from Varna (another popular airport in Bulgaria) to Chicago O'Hare Intl Airport, then the average flight time is 52h 10m.

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

British Airways, Turkish Airlines, and KLM are the most popular carriers operating from Bulgaria to Illinois

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

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

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

As of December 2025, there are 7 operators available to choose from for flights from Bulgaria to Illinois.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Bulgaria to Illinois.

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

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$359 Cheap Flights from Bulgaria to Illinois in 2025/26

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Find the cheapest flights from Bulgaria to Illinois

Round-trip

One-way

Recent round-trip flight deals from Bulgaria to Illinois

Enter your travel dates to find the best prices.

12:05 pm - 6:45 pm

SOF

ORD

14h 40m1 stop

3:21 pm - 4:20 pm

ORD

SOF

16h 59m2 stops

$675British Airways

sáb, jan 24 - dom, fev 8

6:45 pm - 7:50 pm

SOF

ORD

33h 05m1 stop

9:50 pm - 6:00 pm

ORD

SOF

12h 10m1 stop

$676LOT

seg, mai 18 - dom, ago 16

5:25 am - 7:50 pm

SOF

ORD

22h 25m1 stop

5:10 pm - 6:00 pm

ORD

SOF

16h 50m2 stops

$681LOT

qui, mai 14 - sex, ago 14

7:00 am - 2:20 pm

SOF

ORD

15h 20m1 stop

5:20 pm - 1:55 pm

ORD

SOF

12h 35m1 stop

$687Multiple Airlines

sex, jan 16 - dom, jan 25

7:00 am - 5:55 pm

SOF

ORD

18h 55m2 stops

4:50 pm - 2:00 pm

ORD

SOF

13h 10m1 stop

$702KLM

qui, fev 5 - qua, abr 1

4:00 pm - 6:37 pm

VAR

ORD

34h 37m2 stops

1:00 pm - 3:15 pm

ORD

VAR

18h 15m2 stops

$770Austrian Airlines

dom, fev 1 - dom, fev 8

9:15 am - 7:55 pm

VAR

ORD

18h 40m1 stop

10:30 pm - 8:30 am

ORD

VAR

26h 00m1 stop

$778Lufthansa

sáb, mai 2 - dom, mai 17

4:00 pm - 6:37 pm

VAR

ORD

34h 37m2 stops

9:05 pm - 3:15 pm

ORD

VAR

34h 10m2 stops

$789Austrian Airlines

qui, jan 22 - qui, jan 29

9:15 am - 6:15 pm

VAR

ORD

17h 00m2 stops

10:30 pm - 8:30 am

ORD

VAR

26h 00m1 stop

$824Lufthansa

dom, mai 3 - dom, mai 17

9:25 pm - 10:05 am

VAR

ORD

20h 40m1 stop

11:50 am - 9:10 am

ORD

VAR

13h 20m1 stop

$859Turkish Airlines

qui, jan 22 - qui, jan 29

British Airways flights from Bulgaria to Illinois

Our best British Airways deals on Bulgaria to Illinois flight tickets

British Airways

Jan 24

SOF12:05 pmSofia

14h 40m

1 stop

ORD6:45 pmChicago O'Hare Intl

Feb 8

ORD3:21 pmChicago O'Hare Intl

16h 59m

2 stops

SOF4:20 pmSofia

$675

Find similar

British Airways

May 15

SOF2:20 pmSofia

59h 16m

2 stops

ORD5:36 pmChicago O'Hare Intl

Aug 13

ORD5:00 pmChicago O'Hare Intl

12h 30m

1 stop

SOF1:30 pmSofia

$765

Find similar

ITA Airways flights from Bulgaria to Illinois

Our best ITA Airways deals on Bulgaria to Illinois flight tickets

ITA Airways

May 3

SOF6:00 pmSofia

27h 10m

1 stop

ORD1:10 pmChicago O'Hare Intl

May 16

ORD3:00 pmChicago O'Hare Intl

18h 10m

1 stop

SOF5:10 pmSofia

$708

Find similar

ITA Airways

May 17

SOF6:00 pmSofia

27h 10m

1 stop

ORD1:10 pmChicago O'Hare Intl

Aug 15

ORD3:00 pmChicago O'Hare Intl

18h 10m

1 stop

SOF5:10 pmSofia

$717

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

sáb 1/24

12:05 pm-6:45 pm

1 stop14h 40m

Chicago O'Hare Intl

dom 2/8

3:21 pm-4:20 pm

2 stops16h 59m

$675

SofiaChicago

SOF - ORD

SOFORD

Sofia

seg 5/18

6:45 pm-7:50 pm

1 stop33h 05m

Chicago O'Hare Intl

dom 8/16

9:50 pm-6:00 pm

1 stop12h 10m

$676

SofiaChicago

SOF - ORD

SOFORD

Sofia

qui 5/14

5:25 am-7:50 pm

1 stop22h 25m

Chicago O'Hare Intl

sex 8/14

5:10 pm-6:00 pm

2 stops16h 50m

$681

SofiaChicago

SOF - ORD

SOFORD

Sofia

sex 1/16

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

dom 1/25

5:20 pm-1:55 pm

1 stop12h 35m

$687

SofiaChicago

SOF - ORD

SOFORD

Sofia

qui 2/5

7:00 am-5:55 pm

2 stops18h 55m

Chicago O'Hare Intl

qua 4/1

4:50 pm-2:00 pm

1 stop13h 10m

$702

VarnaChicago

VAR - ORD

VARORD

Varna

dom 2/1

4:00 pm-6:37 pm

2 stops34h 37m

Chicago O'Hare Intl

dom 2/8

1:00 pm-3:15 pm

2 stops18h 15m

$770

VarnaChicago

VAR - ORD

VARORD

Varna

sáb 5/2

9:15 am-7:55 pm

1 stop18h 40m

Chicago O'Hare Intl

dom 5/17

10:30 pm-8:30 am

1 stop26h 00m

$778

VarnaChicago

VAR - ORD

VARORD

Varna

qui 1/22

4:00 pm-6:37 pm

2 stops34h 37m

Chicago O'Hare Intl

qui 1/29

9:05 pm-3:15 pm

2 stops34h 10m

$789

VarnaChicago

VAR - ORD

VARORD

Varna

dom 5/3

9:15 am-6:15 pm

2 stops17h 00m

Chicago O'Hare Intl

dom 5/17

10:30 pm-8:30 am

1 stop26h 00m

$824

VarnaChicago

VAR - ORD

VARORD

Varna

qui 1/22

9:25 pm-10:05 am

1 stop20h 40m

Chicago O'Hare Intl

qui 1/29

11:50 am-9:10 am

1 stop13h 20m

$859

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 Illinois

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 Illinois?

The cheapest month to fly to Illinois from Bulgaria is in February. Flight prices, which tend to average around $674, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $679.

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

The cheapest day to depart from Bulgaria to Illinois is on a Thursday when prices can be found for as low as $666. Flights from Bulgaria to Illinois on a Wednesday will generally be more expensive and average around $785. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Bulgaria to Illinois during this time can be as low as $666. Flights in the evening are often more expensive with an average ticket price of $768.

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

You are more likely to see cheaper flights to Illinois from Bulgaria when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $724 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Bulgaria for as low as $631 on momondo.

Cheap Bulgaria to Illinois flight deals and tips

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

Fastest flight time	13h 45m
Direct flights	None

The fastest flight from Bulgaria to Illinois takes 13h 45m

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

Search flight deals

When did momondo last update prices for flights from Bulgaria to Illinois?
Prices for flights from Bulgaria to Illinois were last updated today.
How many operators does momondo search for flights from Bulgaria to Illinois?
As of December 2025, there are 7 operators available to choose from for flights from Bulgaria to Illinois.
How old do you have to be to fly from Bulgaria to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Bulgaria to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Bulgaria to Illinois

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

Airline	Rating	Free Cancellation	Price
LOT	PriceFrom $532	Free Cancellation	Rating 7.5 1,153 reviews	Search LOT flights
British Airways	PriceFrom $546	Free Cancellation	Rating 6.7 7,605 reviews	Search British Airways flights
Turkish Airlines	PriceFrom $601	Free Cancellation	Rating 7.3 4,112 reviews	Search Turkish Airlines flights
KLM	PriceFrom $607	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
Lufthansa	PriceFrom $642	Free Cancellation	Rating 6.8 7,649 reviews	Search Lufthansa flights
United Airlines	PriceFrom $643	Free Cancellation	Rating 7.4 9,105 reviews	Search United Airlines flights
Austrian Airlines	PriceFrom $647	Free Cancellation	Rating 7.6 880 reviews	Search Austrian Airlines flights

Why use momondo?

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

Finding the right flight to Illinois from Bulgaria is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Illinois from Bulgaria with this policy.

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

Once you have performed a search for Bulgaria to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Bulgaria to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.