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Cheap flights from Chicago O'Hare Intl Airport to Bulgaria from $227

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Bulgaria departing on 1/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Chicago O'Hare Intl Airport to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
9:50 pm - 6:20 pmORD-SOF
12h 30m1 stop
Lufthansa Logo
6:10 am - 3:20 pmSOF-ORD
17h 10m1 stop
$555Lufthansa
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Wed, Jan 14 - Wed, Jan 28
Austrian Airlines Logo
9:05 pm - 3:15 pmORD-VAR
34h 10m2 stops
Austrian Airlines Logo
4:00 pm - 12:45 pmVAR-ORD
52h 45m2 stops
$557Austrian Airlines
Find Deal
Wed, Jan 28 - Sun, Feb 1
Lufthansa Logo
6:00 pm - 1:15 pmORD-SOF
11h 15m1 stop
Lufthansa Logo
6:10 am - 3:20 pmSOF-ORD
17h 10m1 stop
$558Lufthansa
Find Deal
Wed, Jan 21 - Sun, Jan 25
Multiple Airlines Logo
12:50 pm - 6:40 pmORD-SOF
21h 50m2 stops
Multiple Airlines Logo
1:55 pm - 7:55 pmSOF-ORD
14h 00m1 stop
$559Multiple Airlines
Find Deal
Wed, Apr 8 - Sun, Apr 12
Lufthansa Logo
9:50 pm - 10:45 pmORD-SOF
16h 55m2 stops
Lufthansa Logo
7:05 pm - 1:10 pmSOF-ORD
26h 05m2 stops
$561Lufthansa
Find Deal
Sun, Dec 28 - Mon, Mar 2
Lufthansa Logo
6:25 pm - 5:15 pmORD-VAR
14h 50m1 stop
Lufthansa Logo
4:00 pm - 2:10 pmVAR-ORD
54h 10m2 stops
$562Lufthansa
Find Deal
Wed, Jan 28 - Sun, Feb 1
Multiple Airlines Logo
6:25 pm - 10:45 pmORD-SOF
20h 20m1 stop
Multiple Airlines Logo
3:00 pm - 1:45 pmSOF-ORD
29h 45m1 stop
$562Multiple Airlines
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Fri, Mar 6 - Mon, Mar 9
Air Canada Logo
1:10 pm - 6:40 pmORD-SOF
21h 30m2 stops
Air Canada Logo
6:20 am - 2:51 pmSOF-ORD
16h 31m2 stops
$563Air Canada
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Wed, May 13 - Fri, May 29
Turkish Airlines Logo
8:20 pm - 8:50 pmORD-SOF
16h 30m1 stop
Turkish Airlines Logo
9:35 am - 7:25 pmSOF-ORD
16h 50m1 stop
$568Turkish Airlines
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Fri, Mar 6 - Mon, Mar 9
Austrian Airlines Logo
9:05 pm - 3:15 pmORD-VAR
34h 10m2 stops
Austrian Airlines Logo
4:00 pm - 2:00 pmVAR-ORD
30h 00m1 stop
$634Austrian Airlines
Find Deal
Tue, Feb 17 - Sun, Feb 22

Air Canada flights from Chicago O'Hare Intl Airport to Bulgaria

Our best Air Canada deals on Chicago O'Hare Intl Airport to Bulgaria flight tickets
Air Canada
May 13
ORD1:10 pmChicago O'Hare Intl
21h 30m
2 stops
SOF6:40 pmSofia
May 29
SOF6:20 amSofia
16h 31m
2 stops
ORD2:51 pmChicago O'Hare Intl
$563
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Air Canada
Jan 21
ORD7:15 amChicago O'Hare Intl
27h 05m
2 stops
SOF6:20 pmSofia
Jan 25
SOF2:25 pmSofia
32h 30m
2 stops
ORD2:55 pmChicago O'Hare Intl
$577
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United Airlines flights from Chicago O'Hare Intl Airport to Bulgaria

Our best United Airlines deals on Chicago O'Hare Intl Airport to Bulgaria flight tickets
United Airlines
Jan 21
ORD9:50 pmChicago O'Hare Intl
12h 30m
1 stop
SOF6:20 pmSofia
Jan 25
SOF2:25 pmSofia
32h 45m
2 stops
ORD3:10 pmChicago O'Hare Intl
$564
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United Airlines
Dec 7
ORD9:50 pmChicago O'Hare Intl
12h 30m
1 stop
SOF6:20 pmSofia
Jan 12
SOF6:10 amSofia
17h 10m
1 stop
ORD3:20 pmChicago O'Hare Intl
$607
Find similar
United Airlines
Dec 7
ORD6:15 pmChicago O'Hare Intl
16h 05m
2 stops
SOF6:20 pmSofia
Jan 12
SOF6:10 amSofia
17h 10m
1 stop
ORD3:20 pmChicago O'Hare Intl
$611
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momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 November 26, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 1/14

9:50 pm-6:20 pm

1 stop12h 30m

Sofia

Wed 1/28

6:10 am-3:20 pm

1 stop17h 10m

$555

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Wed 1/28

9:05 pm-3:15 pm

2 stops34h 10m

Varna

Sun 2/1

4:00 pm-12:45 pm

2 stops52h 45m

$557

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 1/21

6:00 pm-1:15 pm

1 stop11h 15m

Sofia

Sun 1/25

6:10 am-3:20 pm

1 stop17h 10m

$558

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 4/8

12:50 pm-6:40 pm

2 stops21h 50m

Sofia

Sun 4/12

1:55 pm-7:55 pm

1 stop14h 00m

$559

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 12/28

9:50 pm-10:45 pm

2 stops16h 55m

Sofia

Mon 3/2

7:05 pm-1:10 pm

2 stops26h 05m

$561

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Wed 1/28

6:25 pm-5:15 pm

1 stop14h 50m

Varna

Sun 2/1

4:00 pm-2:10 pm

2 stops54h 10m

$562

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 3/6

6:25 pm-10:45 pm

1 stop20h 20m

Sofia

Mon 3/9

3:00 pm-1:45 pm

1 stop29h 45m

$562

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 5/13

1:10 pm-6:40 pm

2 stops21h 30m

Sofia

Fri 5/29

6:20 am-2:51 pm

2 stops16h 31m

$563

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 3/6

8:20 pm-8:50 pm

1 stop16h 30m

Sofia

Mon 3/9

9:35 am-7:25 pm

1 stop16h 50m

$568

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Tue 2/17

9:05 pm-3:15 pm

2 stops34h 10m

Varna

Sun 2/22

4:00 pm-2:00 pm

1 stop30h 00m

$634

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 Chicago O'Hare Intl Airport 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 $637.

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

The cheapest day to depart from Chicago O'Hare Intl Airport to Bulgaria is on a Thursday when prices can be found for as low as $885. On the other hand, Monday is the most expensive day to depart from Chicago O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,047.

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

In the morning is the cheapest time of day to fly from Chicago O'Hare Intl Airport to Bulgaria when you can find flight prices for as low as $751. Flying to Bulgaria in the morning is an ideal time because this is during off-peak travel hours. Flights to Bulgaria are more costly at noon, with an average ticket price of $1,107. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Bulgaria from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $760 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bulgaria from Chicago O'Hare Intl Airport for as low as $713 on momondo.

Cheap Chicago O'Hare Intl Airport to Bulgaria flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Bulgaria

Fastest flight time

11h 30m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to Bulgaria takes 11h 30m
There are no direct flights from Chicago O'Hare Intl Airport to Bulgaria. There are no popular flight routes from Chicago O'Hare Intl Airport to Bulgaria.
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  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Bulgaria?

    Prices for flights from Chicago O'Hare Intl Airport to Bulgaria were last updated today.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Bulgaria?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport to Bulgaria.

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

    The necessary travel and health documents for your Bulgaria 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 Chicago O'Hare Intl Airport to Bulgaria

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Bulgaria with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $509Free CancellationRating
7.3
4,063 reviews
Search Turkish Airlines flights
KLMPriceFrom $569Free CancellationRating
7.7
1,423 reviews
Search KLM flights
LOTPriceFrom $573Free CancellationRating
7.5
1,140 reviews
Search LOT flights
Air FrancePriceFrom $585Free CancellationRating
7.4
1,498 reviews
Search Air France flights
LufthansaPriceFrom $588Free CancellationRating
6.8
7,594 reviews
Search Lufthansa flights
SWISSPriceFrom $593Free CancellationRating
7.5
1,797 reviews
Search SWISS flights
United AirlinesPriceFrom $599Free CancellationRating
7.4
9,047 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $606Free CancellationRating
7.6
874 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $611Free CancellationRating
6.7
7,539 reviews
Search British Airways flights
Air SerbiaPriceFrom $634Free CancellationRating
6.2
209 reviews
Search Air Serbia flights

Why use momondo?

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

Finding the right flight to Bulgaria from Chicago 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 Bulgaria quick and easy, saving you time and money.

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

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

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

momondo helps you find the best flight between Chicago and Bulgaria 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 Chicago to Bulgaria right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Bulgaria flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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