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 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

KLM is the most popular carrier operating from Bulgaria to Illinois

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 15h 30m on average. If you fly from Varna (another popular airport in Bulgaria) to Chicago O'Hare Intl Airport, then the average flight time is 29h.

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 February 2026, there are 6 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.

$357 Cheap Flights from Bulgaria to Illinois in 2026

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Find the cheapest flights from Bulgaria to Illinois

Round-trip

One-way

Last minute

Recent round-trip flight deals from Bulgaria to Illinois

Enter your travel dates to find the best prices.

4:00 pm - 7:25 pm

SOF

ORD

34h 25m

1 stop

11:25 am - 3:00 pm

ORD

SOF

19h 35m

1 stop

$648Turkish Airlines

Mon, Mar 16 - Sun, Mar 29

5:20 am - 7:50 pm

SOF

ORD

22h 30m

1 stop

5:10 pm - 6:00 pm

ORD

SOF

16h 50m

2 stops

$655LOT

Thu, Apr 23 - Fri, Aug 28

4:00 pm - 7:25 pm

SOF

ORD

34h 25m

1 stop

8:10 pm - 8:15 pm

ORD

SOF

16h 05m

1 stop

$662Turkish Airlines

Mon, Mar 16 - Mon, Mar 30

2:35 pm - 8:00 pm

SOF

ORD

13h 25m

1 stop

10:55 pm - 5:50 pm

ORD

SOF

11h 55m

1 stop

$663LOT

Thu, Feb 26 - Wed, Mar 11

9:35 am - 6:15 pm

SOF

ORD

16h 40m

1 stop

11:25 am - 3:00 pm

ORD

SOF

19h 35m

1 stop

$664Turkish Airlines

Thu, Apr 23 - Sat, Aug 29

2:35 pm - 8:00 pm

SOF

ORD

13h 25m

1 stop

10:55 pm - 5:50 pm

ORD

SOF

11h 55m

1 stop

$667LOT

Thu, Feb 26 - Wed, Mar 11

7:00 am - 5:54 pm

SOF

MDW

17h 54m

2 stops

1:10 pm - 2:00 pm

MDW

SOF

16h 50m

2 stops

$781KLM

Wed, Mar 11 - Wed, Apr 8

7:00 am - 6:40 pm

SOF

MDW

19h 40m

2 stops

1:22 pm - 2:00 pm

MDW

SOF

16h 38m

2 stops

$915KLM

Tue, Feb 24 - Wed, May 13

5:40 pm - 11:10 am

VAR

ORD

25h 30m

1 stop

9:40 pm - 3:15 pm

ORD

VAR

33h 35m

2 stops

$1,047Lufthansa

Sun, Feb 22 - Fri, May 22

4:00 pm - 1:45 pm

VAR

ORD

29h 45m

2 stops

4:20 pm - 3:15 pm

ORD

VAR

14h 55m

1 stop

$1,129Austrian Airlines

Mon, Feb 23 - Fri, May 22

KLM flights from Bulgaria to Illinois

Our best KLM deals on Bulgaria to Illinois flight tickets

KLM

Feb 26

SOF7:00 amSofia

19h 49m

2 stops

ORD6:49 pmChicago O'Hare Intl

Mar 11

ORD5:25 pmChicago O'Hare Intl

13h 40m

1 stop

SOF2:05 pmSofia

$744

KLM

Feb 26

SOF7:00 amSofia

18h 53m

2 stops

ORD5:53 pmChicago O'Hare Intl

Mar 11

ORD5:25 pmChicago O'Hare Intl

13h 40m

1 stop

SOF2:05 pmSofia

$747

KLM

Feb 25

SOF7:00 amSofia

15h 20m

1 stop

ORD2:20 pmChicago O'Hare Intl

May 26

ORD4:20 pmChicago O'Hare Intl

13h 40m

1 stop

SOF2:00 pmSofia

$748

LOT flights from Bulgaria to Illinois

Our best LOT deals on Bulgaria to Illinois flight tickets

LOT

Feb 26

SOF2:35 pmSofia

13h 25m

1 stop

ORD8:00 pmChicago O'Hare Intl

Mar 11

ORD10:55 pmChicago O'Hare Intl

11h 55m

1 stop

SOF5:50 pmSofia

$655

LOT

Feb 26

SOF2:35 pmSofia

13h 25m

1 stop

ORD8:00 pmChicago O'Hare Intl

Mar 11

ORD10:55 pmChicago O'Hare Intl

11h 55m

1 stop

SOF5:50 pmSofia

$663

LOT

Feb 26

SOF2:35 pmSofia

13h 25m

1 stop

ORD8:00 pmChicago O'Hare Intl

Mar 11

ORD10:55 pmChicago O'Hare Intl

11h 55m

1 stop

SOF5:50 pmSofia

$667

Fly from

Fly to

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 3/16

4:00 pm-7:25 pm

1 stop34h 25m

Chicago O'Hare Intl

Sun 3/29

11:25 am-3:00 pm

1 stop19h 35m

$648

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 4/23

5:20 am-7:50 pm

1 stop22h 30m

Chicago O'Hare Intl

Fri 8/28

5:10 pm-6:00 pm

2 stops16h 50m

$655

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 3/16

4:00 pm-7:25 pm

1 stop34h 25m

Chicago O'Hare Intl

Mon 3/30

8:10 pm-8:15 pm

1 stop16h 05m

$662

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 2/26

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Wed 3/11

10:55 pm-5:50 pm

1 stop11h 55m

$663

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 4/23

9:35 am-6:15 pm

1 stop16h 40m

Chicago O'Hare Intl

Sat 8/29

11:25 am-3:00 pm

1 stop19h 35m

$664

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 2/26

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Wed 3/11

10:55 pm-5:50 pm

1 stop11h 55m

$667

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Wed 3/11

7:00 am-5:54 pm

2 stops17h 54m

Chicago Midway

Wed 4/8

1:10 pm-2:00 pm

2 stops16h 50m

$781

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Tue 2/24

7:00 am-6:40 pm

2 stops19h 40m

Chicago Midway

Wed 5/13

1:22 pm-2:00 pm

2 stops16h 38m

$915

VarnaChicago

VAR - ORD

VARORD

Varna

Sun 2/22

5:40 pm-11:10 am

1 stop25h 30m

Chicago O'Hare Intl

Fri 5/22

9:40 pm-3:15 pm

2 stops33h 35m

$1,047

VarnaChicago

VAR - ORD

VARORD

Varna

Mon 2/23

4:00 pm-1:45 pm

2 stops29h 45m

Chicago O'Hare Intl

Fri 5/22

4:20 pm-3:15 pm

1 stop14h 55m

$1,129

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 April. Flight prices, which tend to average around $679, 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 April, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $690.

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 $742 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 $667 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	15h 30m
Direct flights	None

The fastest flight from Bulgaria to Illinois takes 15h 30m

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 February 2026, there are 6 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 $593	Free Cancellation	Rating 7.5 1,179 reviews	Search LOT flights
Turkish Airlines	PriceFrom $601	Free Cancellation	Rating 7.3 4,211 reviews	Search Turkish Airlines flights
KLM	PriceFrom $621	Free Cancellation	Rating 7.7 1,451 reviews	Search KLM flights
United Airlines	PriceFrom $649	Free Cancellation	Rating 7.4 9,274 reviews	Search United Airlines flights
Lufthansa	PriceFrom $653	Free Cancellation	Rating 6.8 7,779 reviews	Search Lufthansa flights
Austrian Airlines	PriceFrom $658	Free Cancellation	Rating 7.5 896 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.