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Cheap flights from Illinois to Bulgaria from $300

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 5/12. 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
0 bags

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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 - 9:20 pm
ORD
-
VAR
17h 10m
1 stop
Turkish Airlines Logo
9:35 am - 6:15 pm
VAR
-
ORD
16h 40m
1 stop
$544Turkish Airlines
Wed, Apr 29 - Tue, Jun 9
Turkish Airlines Logo
8:10 pm - 8:15 pm
ORD
-
SOF
16h 05m
1 stop
Turkish Airlines Logo
9:35 am - 6:15 pm
SOF
-
ORD
16h 40m
1 stop
$546Turkish Airlines
Sun, May 3 - Wed, May 13
Turkish Airlines Logo
8:20 pm - 8:50 pm
ORD
-
SOF
16h 30m
1 stop
Turkish Airlines Logo
9:40 pm - 7:25 pm
SOF
-
ORD
28h 45m
1 stop
$548Turkish Airlines
Tue, Mar 3 - Tue, Mar 24
LOT Logo
10:55 pm - 1:50 pm
ORD
-
SOF
31h 55m
1 stop
LOT Logo
6:35 pm - 9:00 pm
SOF
-
ORD
33h 25m
1 stop
$572LOT
Mon, Mar 9 - Mon, Mar 16
LOT Logo
9:55 pm - 1:50 pm
ORD
-
SOF
31h 55m
1 stop
LOT Logo
6:35 pm - 9:00 pm
SOF
-
ORD
33h 25m
1 stop
$573LOT
Mon, Feb 23 - Mon, Mar 9
United Airlines Logo
8:30 am - 12:10 pm
STL
-
SOF
19h 40m
2 stops
United Airlines Logo
6:20 am - 1:25 pm
SOF
-
STL
15h 05m
1 stop
$700United Airlines
Tue, May 5 - Sun, May 17
Air Canada Logo
7:30 am - 12:10 pm
STL
-
SOF
20h 40m
2 stops
Air Canada Logo
6:10 am - 8:05 pm
SOF
-
STL
45h 55m
2 stops
$708Air Canada
Tue, May 5 - Sun, May 17
United Airlines Logo
6:00 pm - 10:45 pm
STL
-
SOF
20h 45m
2 stops
United Airlines Logo
6:10 am - 9:40 pm
SOF
-
STL
23h 30m
2 stops
$747United Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
7:30 am - 11:00 am
STL
-
SOF
19h 30m
2 stops
Multiple Airlines Logo
6:20 am - 8:05 pm
SOF
-
STL
21h 45m
2 stops
$804Multiple Airlines
Tue, Jun 2 - Wed, Jun 17
Multiple Airlines Logo
1:00 pm - 11:00 am
STL
-
SOF
38h 00m
2 stops
Multiple Airlines Logo
12:55 pm - 8:05 pm
SOF
-
STL
39h 10m
2 stops
$806Multiple Airlines
Mon, Jun 1 - Wed, Jun 17

LOT flights from Illinois to Bulgaria

Our best LOT deals on Illinois to Bulgaria flight tickets
LOT
Mar 9
ORD10:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
Mar 16
SOF6:35 pmSofia
33h 25m
1 stop
ORD9:00 pmChicago O'Hare Intl
$572
LOT
Feb 23
ORD9:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
Mar 9
SOF6:35 pmSofia
33h 25m
1 stop
ORD9:00 pmChicago O'Hare Intl
$573
LOT
Apr 5
ORD5:10 pmChicago O'Hare Intl
12h 40m
1 stop
SOF1:50 pmSofia
Apr 19
SOF2:35 pmSofia
13h 15m
1 stop
ORD7:50 pmChicago O'Hare Intl
$575

Turkish Airlines flights from Illinois to Bulgaria

Our best Turkish Airlines deals on Illinois to Bulgaria flight tickets
Turkish Airlines
Feb 19
ORD11:50 amChicago O'Hare Intl
13h 20m
1 stop
VAR9:10 amVarna
Mar 4
VAR10:00 amVarna
32h 05m
1 stop
ORD10:05 amChicago O'Hare Intl
$535
Turkish Airlines
Apr 29
ORD8:10 pmChicago O'Hare Intl
17h 10m
1 stop
VAR9:20 pmVarna
Jun 9
VAR9:35 amVarna
16h 40m
1 stop
ORD6:15 pmChicago O'Hare Intl
$544
Turkish Airlines
Feb 18
ORD8:20 pmChicago O'Hare Intl
28h 25m
1 stop
SOF8:45 amSofia
Mar 6
SOF9:35 amSofia
16h 50m
1 stop
ORD6:25 pmChicago O'Hare Intl
$545

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 February 12, 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

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Wed 4/29

8:10 pm-9:20 pm

1 stop17h 10m

Varna

Tue 6/9

9:35 am-6:15 pm

1 stop16h 40m

$544

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 5/3

8:10 pm-8:15 pm

1 stop16h 05m

Sofia

Wed 5/13

9:35 am-6:15 pm

1 stop16h 40m

$546

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 3/3

8:20 pm-8:50 pm

1 stop16h 30m

Sofia

Tue 3/24

9:40 pm-7:25 pm

1 stop28h 45m

$548

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 3/9

10:55 pm-1:50 pm

1 stop31h 55m

Sofia

Mon 3/16

6:35 pm-9:00 pm

1 stop33h 25m

$572

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 2/23

9:55 pm-1:50 pm

1 stop31h 55m

Sofia

Mon 3/9

6:35 pm-9:00 pm

1 stop33h 25m

$573

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 5/5

8:30 am-12:10 pm

2 stops19h 40m

Sofia

Sun 5/17

6:20 am-1:25 pm

1 stop15h 05m

$700

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 5/5

7:30 am-12:10 pm

2 stops20h 40m

Sofia

Sun 5/17

6:10 am-8:05 pm

2 stops45h 55m

$708

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Thu 2/26

6:00 pm-10:45 pm

2 stops20h 45m

Sofia

Mon 3/2

6:10 am-9:40 pm

2 stops23h 30m

$747

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Tue 6/2

7:30 am-11:00 am

2 stops19h 30m

Sofia

Wed 6/17

6:20 am-8:05 pm

2 stops21h 45m

$804

St. LouisSofia

STL - SOF

STLSOF

Lambert-St Louis

Mon 6/1

1:00 pm-11:00 am

2 stops38h 00m

Sofia

Wed 6/17

12:55 pm-8:05 pm

2 stops39h 10m

$806

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 February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $597.

How far in advance should I book a flight 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 $742 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 $712 on momondo.

Can stopping save me money on Illinois to Bulgaria flights?

You could potentially save up to 6% on your flight if you consider stops on a Illinois to Bulgaria flight.

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 35m

Direct flights

None
The fastest flight from Illinois to Bulgaria takes 12h 35m
There are no direct flights from Illinois to Bulgaria. There are no popular flight routes from Illinois to Bulgaria.
Search flight deals

  • 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
ITA AirwaysPriceFrom $469Free CancellationRating
6.7
1,148 reviews
Search ITA Airways flights
Turkish AirlinesPriceFrom $520Free CancellationRating
7.3
4,210 reviews
Search Turkish Airlines flights
KLMPriceFrom $533Free CancellationRating
7.7
1,452 reviews
Search KLM flights
United AirlinesPriceFrom $566Free CancellationRating
7.4
9,283 reviews
Search United Airlines flights
SWISSPriceFrom $569Free CancellationRating
7.6
1,870 reviews
Search SWISS flights
Air FrancePriceFrom $585Free CancellationRating
7.4
1,532 reviews
Search Air France flights
LufthansaPriceFrom $587Free CancellationRating
6.8
7,780 reviews
Search Lufthansa flights
LOTPriceFrom $595Free CancellationRating
7.5
1,179 reviews
Search LOT flights
Austrian AirlinesPriceFrom $606Free CancellationRating
7.5
896 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $609Free CancellationRating
6.7
7,737 reviews
Search British Airways 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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