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Cheap flights from Sofia to Chicago from $398

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sofia to Chicago departing on 2/14. 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 Sofia to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
7:00 am - 5:55 pm
SOF
-
ORD
18h 55m
2 stops
KLM Logo
4:20 pm - 2:00 pm
ORD
-
SOF
13h 40m
1 stop
$652KLM
Fri, Feb 6 - Tue, May 5
KLM Logo
7:00 am - 6:45 pm
SOF
-
ORD
19h 45m
2 stops
KLM Logo
12:15 pm - 2:00 pm
ORD
-
SOF
17h 45m
2 stops
$657KLM
Thu, Feb 5 - Wed, Apr 1
Multiple Airlines Logo
7:10 am - 6:19 pm
SOF
-
ORD
19h 09m
2 stops
Multiple Airlines Logo
4:20 pm - 2:00 pm
ORD
-
SOF
13h 40m
1 stop
$658Multiple Airlines
Thu, Jan 29 - Sun, Mar 29
LOT Logo
6:35 pm - 8:00 pm
SOF
-
ORD
33h 25m
1 stop
LOT Logo
9:50 pm - 1:55 am
ORD
-
SOF
20h 05m
1 stop
$659LOT
Thu, Feb 5 - Wed, Apr 1
Multiple Airlines Logo
7:00 am - 6:31 pm
SOF
-
ORD
18h 31m
2 stops
Multiple Airlines Logo
8:15 pm - 2:00 pm
ORD
-
SOF
33h 45m
1 stop
$661Multiple Airlines
Wed, Mar 18 - Thu, May 28
LOT Logo
6:45 pm - 7:50 pm
SOF
-
ORD
33h 05m
1 stop
LOT Logo
5:10 pm - 1:55 pm
ORD
-
SOF
12h 45m
1 stop
$667LOT
Sun, May 31 - Thu, Jul 30
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m
1 stop
LOT Logo
5:10 pm - 6:00 pm
ORD
-
SOF
40h 50m
2 stops
$670LOT
Fri, Feb 6 - Thu, May 7
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m
1 stop
LOT Logo
9:55 pm - 1:50 pm
ORD
-
SOF
31h 55m
1 stop
$673LOT
Sat, Feb 7 - Thu, Feb 12
LOT Logo
5:25 am - 7:50 pm
SOF
-
ORD
22h 25m
1 stop
LOT Logo
5:10 pm - 1:55 am
ORD
-
SOF
24h 45m
2 stops
$676LOT
Wed, Apr 8 - Wed, Sep 9
LOT Logo
5:25 am - 3:05 pm
SOF
-
ORD
41h 40m
2 stops
LOT Logo
9:50 pm - 1:55 am
ORD
-
SOF
20h 05m
1 stop
$678LOT
Fri, May 29 - Thu, Jul 30

KLM flights from Sofia to Chicago O'Hare Intl Airport

Our best KLM deals on Sofia to Chicago O'Hare Intl Airport flight tickets
KLM
Feb 6
SOF7:00 amSofia
18h 55m
2 stops
ORD5:55 pmChicago O'Hare Intl
May 5
ORD4:20 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:00 pmSofia
$652
KLM
Jan 24
SOF7:00 amSofia
20h 21m
2 stops
ORD7:21 pmChicago O'Hare Intl
Jan 30
ORD2:25 pmChicago O'Hare Intl
15h 40m
2 stops
SOF2:05 pmSofia
$656
KLM
Feb 5
SOF7:00 amSofia
19h 45m
2 stops
ORD6:45 pmChicago O'Hare Intl
Apr 1
ORD12:15 pmChicago O'Hare Intl
17h 45m
2 stops
SOF2:00 pmSofia
$657

LOT flights from Sofia to Chicago O'Hare Intl Airport

Our best LOT deals on Sofia to Chicago O'Hare Intl Airport flight tickets
LOT
Feb 5
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Apr 1
ORD9:50 pmChicago O'Hare Intl
20h 05m
1 stop
SOF1:55 amSofia
$659
LOT
May 31
SOF6:45 pmSofia
33h 05m
1 stop
ORD7:50 pmChicago O'Hare Intl
Jul 30
ORD5:10 pmChicago O'Hare Intl
12h 45m
1 stop
SOF1:55 pmSofia
$667
LOT
Feb 6
SOF2:35 pmSofia
13h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
May 7
ORD5:10 pmChicago O'Hare Intl
40h 50m
2 stops
SOF6:00 pmSofia
$670

momondo Fare Finder

 
Customize your flight search to find flights from Sofia to Chicago O'Hare Intl Airport 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 January 15, 2026.
Use the filters below to find and compare flights from Sofia to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/6

7:00 am-5:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Tue 5/5

4:20 pm-2:00 pm

1 stop13h 40m

$652

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 2/5

7:00 am-6:45 pm

2 stops19h 45m

Chicago O'Hare Intl

Wed 4/1

12:15 pm-2:00 pm

2 stops17h 45m

$657

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/29

7:10 am-6:19 pm

2 stops19h 09m

Chicago O'Hare Intl

Sun 3/29

4:20 pm-2:00 pm

1 stop13h 40m

$658

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 2/5

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Wed 4/1

9:50 pm-1:55 am

1 stop20h 05m

$659

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 3/18

7:00 am-6:31 pm

2 stops18h 31m

Chicago O'Hare Intl

Thu 5/28

8:15 pm-2:00 pm

1 stop33h 45m

$661

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 5/31

6:45 pm-7:50 pm

1 stop33h 05m

Chicago O'Hare Intl

Thu 7/30

5:10 pm-1:55 pm

1 stop12h 45m

$667

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/6

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Thu 5/7

5:10 pm-6:00 pm

2 stops40h 50m

$670

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 2/7

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Thu 2/12

9:55 pm-1:50 pm

1 stop31h 55m

$673

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 4/8

5:25 am-7:50 pm

1 stop22h 25m

Chicago O'Hare Intl

Wed 9/9

5:10 pm-1:55 am

2 stops24h 45m

$676

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 5/29

5:25 am-3:05 pm

2 stops41h 40m

Chicago O'Hare Intl

Thu 7/30

9:50 pm-1:55 am

1 stop20h 05m

$678

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 Chicago from

How to get the cheapest flight ticket from Sofia to Chicago O'Hare Intl Airport

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 typical price of a round-trip flight between Sofia and Chicago O'Hare Intl Airport?

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The month of July is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Sofia averaging around $690.

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Sofia when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $727 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Sofia for as low as $630 on momondo.

How have Sofia to Chicago O'Hare Intl Airport flight prices changed over time?

As of January 2026, prices for Sofia to Chicago O'Hare Intl Airport flights are approximately 41% more expensive when compared to flights at the same time last year.

When to book flights from Sofia to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Sofia to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sofia to Chicago O'Hare Intl Airport (SOF to ORD) flight deals and tips

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

Fastest flight time

13h 10m

Direct flights

None
The fastest flight from Sofia to Chicago O'Hare Intl Airport takes 13h 10m
There are no direct flights from Sofia to Chicago O'Hare Intl Airport. There are no popular flight routes from Sofia to Chicago O'Hare Intl Airport.
Search flight deals

  • How far is Sofia to Chicago O'Hare Intl by plane?

    The distance between Sofia and Chicago O'Hare Intl is about 5191.0 mi. 13h 10m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Sofia Airport to Chicago O'Hare Intl Airport?

    Prices for flights from Sofia Airport to Chicago O'Hare Intl Airport are refreshed on a daily basis.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

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

  • What is the most popular airline from Sofia to Chicago O'Hare Intl Airport?

Best airlines flying from Sofia to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Sofia to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
LOTPriceFrom $532Free CancellationRating
7.5
1,174 reviews
Search LOT flights
KLMPriceFrom $607Free CancellationRating
7.7
1,440 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,176 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $642Free CancellationRating
6.8
7,718 reviews
Search Lufthansa flights
United AirlinesPriceFrom $643Free CancellationRating
7.4
9,164 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $654Free CancellationRating
7.6
894 reviews
Search Austrian Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Rosemont
Naperville
Kenosha
New Buffalo
Joliet
Oak Brook
Orland Park
Racine
Hammond
Janesville
Tinley Park
Elgin
Aurora
South Holland

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sofia to Chicago. momondo saves you time and could save you money on your trip.

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

Flights from Sofia to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sofia to Chicago.

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

Yes momondo offers price alerts on flights to Chicago from Sofia. 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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