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Cheap flights from Sofia to Chicago from $351

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 5/8. 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 Sofia to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
LOT Logo
2:35 pm - 9:00 pm
SOF
-
ORD
13h 25m
1 stop
LOT Logo
10:55 pm - 5:50 pm
ORD
-
SOF
11h 55m
1 stop
$670LOT
Fri, Mar 13 - Thu, Mar 19
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
2:40 pm - 3:10 pm
SOF
-
ORD
56h 30m
2 stops
LOT Logo
9:50 pm - 1:55 pm
ORD
-
SOF
32h 05m
1 stop
$678LOT
Wed, Apr 29 - Sat, Aug 29
Multiple Airlines Logo
7:00 am - 3:20 pm
SOF
-
ORD
15h 20m
1 stop
Multiple Airlines Logo
2:38 pm - 1:55 pm
ORD
-
SOF
16h 17m
2 stops
$683Multiple Airlines
Fri, Mar 13 - Thu, Mar 19
Multiple Airlines Logo
3:10 pm - 3:00 pm
SOF
-
ORD
31h 50m
2 stops
Multiple Airlines Logo
5:58 pm - 1:50 pm
ORD
-
SOF
35h 52m
3 stops
$705Multiple Airlines
Tue, Feb 10 - Tue, Feb 17
Multiple Airlines Logo
5:25 pm - 10:42 pm
SOF
-
ORD
37h 17m
3 stops
Multiple Airlines Logo
10:00 am - 4:10 pm
ORD
-
SOF
22h 10m
3 stops
$716Multiple Airlines
Sun, Jan 25 - Sun, Feb 8
Multiple Airlines Logo
7:00 am - 3:20 pm
SOF
-
ORD
15h 20m
1 stop
Multiple Airlines Logo
2:38 pm - 1:55 pm
ORD
-
SOF
16h 17m
2 stops
$717Multiple Airlines
Fri, Mar 13 - Thu, Mar 19
Air France Logo
7:10 am - 3:10 pm
SOF
-
ORD
16h 00m
1 stop
Air France Logo
5:10 pm - 2:00 pm
ORD
-
SOF
12h 50m
1 stop
$726Air France
Tue, Jan 27 - Thu, Apr 30
KLM Logo
7:00 am - 6:40 pm
SOF
-
MDW
18h 40m
2 stops
KLM Logo
1:10 pm - 2:00 pm
MDW
-
SOF
16h 50m
2 stops
$811KLM
Wed, Mar 18 - Wed, Apr 15
KLM Logo
7:00 am - 6:40 pm
SOF
-
MDW
19h 40m
2 stops
KLM Logo
1:29 pm - 2:05 pm
MDW
-
SOF
16h 36m
2 stops
$864KLM
Thu, Feb 26 - Thu, Mar 5

LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Mar 13
SOF2:35 pmSofia
13h 25m
1 stop
ORD9:00 pmChicago O'Hare Intl
Mar 19
ORD10:55 pmChicago O'Hare Intl
11h 55m
1 stop
SOF5:50 pmSofia
$670
LOT
Feb 7
SOF2:35 pmSofia
13h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Feb 12
ORD9:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$673
LOT
Apr 29
SOF2:40 pmSofia
56h 30m
2 stops
ORD3:10 pmChicago O'Hare Intl
Aug 29
ORD9:50 pmChicago O'Hare Intl
32h 05m
1 stop
SOF1:55 pmSofia
$678

United Airlines flights from Sofia to Chicago

Our best United Airlines deals on Sofia to Chicago flight tickets
United Airlines
Feb 26
SOF2:35 pmSofia
13h 30m
1 stop
ORD8:05 pmChicago O'Hare Intl
Mar 5
ORD9:20 amChicago O'Hare Intl
29h 25m
2 stops
SOF10:45 pmSofia
$744
United Airlines
Feb 6
SOF6:10 amSofia
15h 15m
1 stop
ORD1:25 pmChicago O'Hare Intl
Feb 19
ORD6:00 pmChicago O'Hare Intl
20h 45m
1 stop
SOF10:45 pmSofia
$745
United Airlines
Feb 6
SOF6:10 amSofia
17h 10m
1 stop
ORD3:20 pmChicago O'Hare Intl
Feb 12
ORD1:02 pmChicago O'Hare Intl
16h 48m
2 stops
SOF1:50 pmSofia
$746

momondo Fare Finder

 
Customize your flight search to find flights from Sofia to Chicago 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 13, 2026.
Use the filters below to find and compare flights from Sofia to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 3/13

2:35 pm-9:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Thu 3/19

10:55 pm-5:50 pm

1 stop11h 55m

$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 4/29

2:40 pm-3:10 pm

2 stops56h 30m

Chicago O'Hare Intl

Sat 8/29

9:50 pm-1:55 pm

1 stop32h 05m

$678

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 3/13

7:00 am-3:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Thu 3/19

2:38 pm-1:55 pm

2 stops16h 17m

$683

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 2/10

3:10 pm-3:00 pm

2 stops31h 50m

Chicago O'Hare Intl

Tue 2/17

5:58 pm-1:50 pm

3 stops35h 52m

$705

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 1/25

5:25 pm-10:42 pm

3 stops37h 17m

Chicago O'Hare Intl

Sun 2/8

10:00 am-4:10 pm

3 stops22h 10m

$716

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 3/13

7:00 am-3:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Thu 3/19

2:38 pm-1:55 pm

2 stops16h 17m

$717

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 1/27

7:10 am-3:10 pm

1 stop16h 00m

Chicago O'Hare Intl

Thu 4/30

5:10 pm-2:00 pm

1 stop12h 50m

$726

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Wed 3/18

7:00 am-6:40 pm

2 stops18h 40m

Chicago Midway

Wed 4/15

1:10 pm-2:00 pm

2 stops16h 50m

$811

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 2/26

7:00 am-6:40 pm

2 stops19h 40m

Chicago Midway

Thu 3/5

1:29 pm-2:05 pm

2 stops16h 36m

$864

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

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 Chicago?

The month of February is, on average, the cheapest month to fly to Chicago from Sofia, with most prices found around $673. If you’re not able to fly to Chicago in February, then April is your next best option. Flight prices from Sofia to Chicago during April average around $679.

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

You are more likely to see cheaper flights to Chicago from Sofia when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago 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 from Sofia for as low as $630 on momondo.

How have Sofia to Chicago flight prices changed over time?

As of January 2026, prices for Sofia to Chicago flights are approximately 0% cheaper when compared to flights at the same time last year.

When to book flights from Sofia to Chicago

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

Cheap Sofia to Chicago (SOF to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sofia to Chicago

Fastest flight time

15h 15m

Direct flights

None
The fastest flight from Sofia to Chicago takes 15h 15m
There are no direct flights from Sofia to Chicago. There are no popular flight routes from Sofia to Chicago.
Search flight deals

  • How far is Sofia to Chicago by plane?

    A flight from Sofia to Chicago will travel around 5185.9 mi. 15h 15m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Sofia Airport to Chicago?

    Prices for flights from Sofia Airport to Chicago are updated daily.

  • How many operators does momondo search for flights from Sofia Airport to Chicago?

  • How old do you have to be to fly from Sofia Airport to Chicago?

    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 Sofia Airport to Chicago.

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

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

  • What is the most popular airline from Sofia to Chicago?

Best airlines flying from Sofia to Chicago

Compare and see reviews for airlines that fly from Sofia to Chicago with momondo
Airline
Rating
Free Cancellation
Price
LOTPriceFrom $532Free CancellationRating
7.5
1,168 reviews
Search LOT flights
KLMPriceFrom $607Free CancellationRating
7.7
1,437 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,161 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $642Free CancellationRating
6.8
7,709 reviews
Search Lufthansa flights
United AirlinesPriceFrom $643Free CancellationRating
7.4
9,152 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $654Free CancellationRating
7.6
890 reviews
Search Austrian Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Saint Joseph
Portage
Lansing
Schererville
Valparaiso
Munster
Crown Point
Chesterton
Monticello
Porter
Griffith
Saint John

Why use momondo?

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

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

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

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

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

Once all potential Sofia to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Sofia and alert you when they change.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport