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Cheap flights from Illinois to Bulgaria from $307

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Bulgaria departing on 8/10. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
8:10 pm - 8:30 am
ORD
-
VAR
28h 20m
1 stop
Turkish Airlines Logo
10:10 pm - 9:40 am
VAR
-
ORD
19h 30m
1 stop
$747Turkish Airlines
Mon, Aug 24 - Wed, Sep 9
Lufthansa Logo
3:35 pm - 11:30 am
ORD
-
VAR
11h 55m
1 stop
Lufthansa Logo
8:20 pm - 12:55 pm
VAR
-
ORD
24h 35m
1 stop
$750Lufthansa
Sun, Aug 9 - Mon, Aug 24
United Airlines Logo
8:40 am - 1:10 pm
STL
-
SOF
20h 30m
2 stops
United Airlines Logo
6:25 am - 1:45 pm
SOF
-
STL
15h 20m
1 stop
$768United Airlines
Sun, Nov 1 - Wed, Nov 11
United Airlines Logo
3:40 pm - 6:10 pm
STL
-
SOF
18h 30m
1 stop
United Airlines Logo
6:25 am - 1:45 pm
SOF
-
STL
15h 20m
1 stop
$775United Airlines
Wed, Nov 4 - Fri, Nov 13
Air Canada Logo
12:10 pm - 6:40 pm
STL
-
SOF
22h 30m
2 stops
Air Canada Logo
6:00 am - 3:26 pm
SOF
-
STL
41h 26m
2 stops
$777Air Canada
Sun, Oct 18 - Tue, Nov 3
Multiple Airlines Logo
7:05 pm - 8:10 pm
ORD
-
VAR
17h 05m
1 stop
Multiple Airlines Logo
8:20 pm - 12:55 pm
VAR
-
ORD
24h 35m
1 stop
$785Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
2:15 pm - 7:35 pm
ORD
-
VAR
21h 20m
2 stops
Multiple Airlines Logo
8:20 pm - 12:55 pm
VAR
-
ORD
24h 35m
1 stop
$810Multiple Airlines
Sun, Aug 9 - Mon, Aug 24
KLM Logo
12:30 pm - 3:05 pm
MDW
-
SOF
18h 35m
2 stops
KLM Logo
7:00 am - 4:39 pm
SOF
-
MDW
17h 39m
2 stops
$840KLM
Sat, Oct 24 - Sun, Nov 8
Air Canada Logo
3:40 pm - 6:40 pm
ORD
-
SOF
19h 00m
2 stops
Air Canada Logo
6:20 am - 8:12 pm
SOF
-
ORD
21h 52m
2 stops
$841Air Canada
Wed, Aug 19 - Wed, Sep 16
KLM Logo
1:00 pm - 2:00 pm
MDW
-
SOF
17h 00m
2 stops
KLM Logo
7:00 am - 6:19 pm
SOF
-
MDW
19h 19m
2 stops
$875KLM
Mon, Sep 14 - Mon, Sep 28

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LOT flights from Illinois to Bulgaria

Our best LOT deals on Illinois to Bulgaria flight tickets
LOT
Aug 7
ORD8:10 pmChicago O'Hare Intl
33h 40m
1 stop
SOF1:50 pmSofia
Sep 7
SOF6:45 pmSofia
33h 05m
1 stop
ORD7:50 pmChicago O'Hare Intl
$847
LOT
Aug 1
ORD9:50 pmChicago O'Hare Intl
20h 05m
1 stop
SOF1:55 amSofia
Aug 25
SOF2:35 pmSofia
32h 35m
2 stops
ORD3:10 pmChicago O'Hare Intl
$868
LOT
Jul 18
ORD9:50 pmChicago O'Hare Intl
12h 10m
1 stop
SOF6:00 pmSofia
Sep 6
SOF6:45 pmSofia
33h 05m
1 stop
ORD7:50 pmChicago O'Hare Intl
$929

Turkish Airlines flights from Illinois to Bulgaria

Our best Turkish Airlines deals on Illinois to Bulgaria flight tickets
Turkish Airlines
Aug 24
ORD8:10 pmChicago O'Hare Intl
28h 20m
1 stop
VAR8:30 amVarna
Sep 9
VAR10:10 pmVarna
19h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$747
Turkish Airlines
Sep 14
ORD11:25 amChicago O'Hare Intl
13h 05m
1 stop
VAR8:30 amVarna
Sep 28
VAR9:20 amVarna
16h 55m
1 stop
ORD6:15 pmChicago O'Hare Intl
$822
Turkish Airlines
Aug 21
ORD8:10 pmChicago O'Hare Intl
32h 05m
1 stop
SOF12:15 pmSofia
Sep 17
SOF9:10 pmSofia
20h 30m
1 stop
ORD9:40 amChicago O'Hare Intl
$851

momondo Fare Finder

 
Customize your flight search to find flights from Illinois 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 July 5, 2026.
Use the filters below to find and compare flights from Illinois to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Mon 8/24

8:10 pm-8:30 am

1 stop28h 20m

Varna

Wed 9/9

10:10 pm-9:40 am

1 stop19h 30m

$747

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Sun 8/9

3:35 pm-11:30 am

1 stop11h 55m

Varna

Mon 8/24

8:20 pm-12:55 pm

1 stop24h 35m

$750

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Sun 11/1

8:40 am-1:10 pm

2 stops20h 30m

Sofia

Wed 11/11

6:25 am-1:45 pm

1 stop15h 20m

$768
Quickest round-trip

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Wed 11/4

3:40 pm-6:10 pm

1 stop18h 30m

Sofia

Fri 11/13

6:25 am-1:45 pm

1 stop15h 20m

$775

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Sun 10/18

12:10 pm-6:40 pm

2 stops22h 30m

Sofia

Tue 11/3

6:00 am-3:26 pm

2 stops41h 26m

$777

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Mon 8/17

7:05 pm-8:10 pm

1 stop17h 05m

Varna

Mon 8/24

8:20 pm-12:55 pm

1 stop24h 35m

$785

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Sun 8/9

2:15 pm-7:35 pm

2 stops21h 20m

Varna

Mon 8/24

8:20 pm-12:55 pm

1 stop24h 35m

$810

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Sat 10/24

12:30 pm-3:05 pm

2 stops18h 35m

Sofia

Sun 11/8

7:00 am-4:39 pm

2 stops17h 39m

$840

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 8/19

3:40 pm-6:40 pm

2 stops19h 00m

Sofia

Wed 9/16

6:20 am-8:12 pm

2 stops21h 52m

$841

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Mon 9/14

1:00 pm-2:00 pm

2 stops17h 00m

Sofia

Mon 9/28

7:00 am-6:19 pm

2 stops19h 19m

$875

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 Illinois 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 October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $472.

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

You are more likely to see cheaper flights to Bulgaria from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $764 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bulgaria from Illinois for as low as $693 on momondo.

Cheap Illinois to Bulgaria flight deals and tips

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

Fastest flight time

12h 30m

Direct flights

None
The fastest flight from Illinois to Bulgaria takes 12h 30m
There are no direct flights from Illinois to Bulgaria. There are no popular flight routes from Illinois to Bulgaria.
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Frequently asked questions about flying from Illinois to Bulgaria

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

    Prices for flights from Illinois to Bulgaria are refreshed on a daily basis.

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

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

    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 Illinois to Bulgaria.

  • What documentation or ID do you need to fly to Bulgaria?

    The travel and health documents you'll need for your trip to Bulgaria 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 Bulgaria. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Bulgaria

Compare and see reviews for airlines that fly from Illinois to Bulgaria with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $520Free CancellationRating
7.4
4,437 reviews
Search Turkish Airlines flights
SWISSPriceFrom $565Free CancellationRating
7.5
1,989 reviews
Search SWISS flights
United AirlinesPriceFrom $566Free CancellationRating
7.4
9,932 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $575Free CancellationRating
7.6
939 reviews
Search Austrian Airlines flights
LOTPriceFrom $578Free CancellationRating
7.5
1,209 reviews
Search LOT flights
Air FrancePriceFrom $585Free CancellationRating
7.5
1,619 reviews
Search Air France flights
LufthansaPriceFrom $588Free CancellationRating
6.8
8,109 reviews
Search Lufthansa flights
British AirwaysPriceFrom $609Free CancellationRating
6.7
8,094 reviews
Search British Airways flights
KLMPriceFrom $614Free CancellationRating
7.8
1,533 reviews
Search KLM flights
Air SerbiaPriceFrom $703Free CancellationRating
6.1
232 reviews
Search Air Serbia flights

Why use momondo?

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

It is quick and easy to find Illinois to Bulgaria flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bulgaria that suits you.

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

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

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

momondo provides multiple filters to help you find the best flight to Bulgaria from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Bulgaria from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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