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Cheap flights from Sofia to Chicago from $399

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 5/26. 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.
LOT Logo
6:35 pm - 9:00 pm
SOF
-
ORD
33h 25m
1 stop
LOT Logo
9:55 pm - 1:50 pm
ORD
-
SOF
31h 55m
1 stop
$742LOT
Fri, Oct 30 - Thu, Nov 19
Turkish Airlines Logo
3:50 pm - 9:40 am
SOF
-
ORD
25h 50m
1 stop
Turkish Airlines Logo
11:25 am - 11:45 am
ORD
-
SOF
16h 20m
1 stop
$746Turkish Airlines
Wed, Jul 8 - Thu, Aug 20
Turkish Airlines Logo
3:50 pm - 9:40 am
SOF
-
ORD
25h 50m
1 stop
Turkish Airlines Logo
8:10 pm - 3:00 pm
ORD
-
SOF
34h 50m
1 stop
$747Turkish Airlines
Wed, Jul 8 - Thu, Aug 20
Turkish Airlines Logo
3:50 pm - 6:15 pm
SOF
-
ORD
34h 25m
1 stop
Turkish Airlines Logo
8:20 pm - 3:10 pm
ORD
-
SOF
34h 50m
1 stop
$759Turkish Airlines
Fri, Oct 23 - Sat, Nov 14
Turkish Airlines Logo
9:05 pm - 9:40 am
SOF
-
ORD
20h 35m
1 stop
Turkish Airlines Logo
8:10 pm - 3:00 pm
ORD
-
SOF
34h 50m
1 stop
$762Turkish Airlines
Wed, Sep 9 - Wed, Sep 30
Austrian Airlines Logo
6:55 pm - 1:20 pm
SOF
-
ORD
26h 25m
1 stop
Austrian Airlines Logo
4:20 pm - 11:50 am
ORD
-
SOF
11h 30m
1 stop
$765Austrian Airlines
Mon, Aug 31 - Sat, Nov 14
Austrian Airlines Logo
6:55 pm - 4:59 pm
SOF
-
ORD
30h 04m
2 stops
Austrian Airlines Logo
2:25 pm - 6:00 pm
ORD
-
SOF
19h 35m
2 stops
$770Austrian Airlines
Mon, Aug 31 - Sat, Nov 14
KLM Logo
7:00 am - 6:18 pm
SOF
-
MDW
19h 18m
2 stops
KLM Logo
1:18 pm - 2:00 pm
MDW
-
SOF
16h 42m
2 stops
$946KLM
Mon, Jun 22 - Tue, Jul 7
KLM Logo
7:00 am - 6:18 pm
SOF
-
MDW
19h 18m
2 stops
KLM Logo
1:18 pm - 2:00 pm
MDW
-
SOF
16h 42m
2 stops
$950KLM
Mon, Jun 22 - Tue, Jul 7
Multiple Airlines Logo
7:00 am - 6:18 pm
SOF
-
MDW
19h 18m
2 stops
Multiple Airlines Logo
1:49 pm - 2:00 pm
MDW
-
SOF
16h 11m
2 stops
$1,008Multiple Airlines
Thu, Jun 25 - Tue, Jun 30

LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Oct 30
SOF6:35 pmSofia
33h 25m
1 stop
ORD9:00 pmChicago O'Hare Intl
Nov 19
ORD9:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$742
LOT
Jul 8
SOF2:35 pmSofia
13h 15m
1 stop
ORD7:50 pmChicago O'Hare Intl
Aug 18
ORD9:50 pmChicago O'Hare Intl
20h 05m
1 stop
SOF1:55 amSofia
$791
LOT
Jul 8
SOF2:35 pmSofia
13h 15m
1 stop
ORD7:50 pmChicago O'Hare Intl
Aug 18
ORD9:50 pmChicago O'Hare Intl
12h 10m
1 stop
SOF6:00 pmSofia
$793

Austrian Airlines flights from Sofia to Chicago

Our best Austrian Airlines deals on Sofia to Chicago flight tickets
Austrian Airlines
Aug 31
SOF6:55 pmSofia
26h 25m
1 stop
ORD1:20 pmChicago O'Hare Intl
Nov 14
ORD4:20 pmChicago O'Hare Intl
11h 30m
1 stop
SOF11:50 amSofia
$765
Austrian Airlines
Aug 31
SOF6:55 pmSofia
30h 04m
2 stops
ORD4:59 pmChicago O'Hare Intl
Nov 14
ORD2:25 pmChicago O'Hare Intl
19h 35m
2 stops
SOF6:00 pmSofia
$770
Austrian Airlines
Jul 3
SOF7:05 pmSofia
26h 15m
1 stop
ORD1:20 pmChicago O'Hare Intl
Jul 17
ORD4:20 pmChicago O'Hare Intl
23h 35m
1 stop
SOF11:55 pmSofia
$830

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 May 18, 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

Cheapest round-trip

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 10/30

6:35 pm-9:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Thu 11/19

9:55 pm-1:50 pm

1 stop31h 55m

$742

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 7/8

3:50 pm-9:40 am

1 stop25h 50m

Chicago O'Hare Intl

Thu 8/20

11:25 am-11:45 am

1 stop16h 20m

$746

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 7/8

3:50 pm-9:40 am

1 stop25h 50m

Chicago O'Hare Intl

Thu 8/20

8:10 pm-3:00 pm

1 stop34h 50m

$747

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 10/23

3:50 pm-6:15 pm

1 stop34h 25m

Chicago O'Hare Intl

Sat 11/14

8:20 pm-3:10 pm

1 stop34h 50m

$759

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/9

9:05 pm-9:40 am

1 stop20h 35m

Chicago O'Hare Intl

Wed 9/30

8:10 pm-3:00 pm

1 stop34h 50m

$762

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 8/31

6:55 pm-1:20 pm

1 stop26h 25m

Chicago O'Hare Intl

Sat 11/14

4:20 pm-11:50 am

1 stop11h 30m

$765

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 8/31

6:55 pm-4:59 pm

2 stops30h 04m

Chicago O'Hare Intl

Sat 11/14

2:25 pm-6:00 pm

2 stops19h 35m

$770

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Mon 6/22

7:00 am-6:18 pm

2 stops19h 18m

Chicago Midway

Tue 7/7

1:18 pm-2:00 pm

2 stops16h 42m

$946

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Mon 6/22

7:00 am-6:18 pm

2 stops19h 18m

Chicago Midway

Tue 7/7

1:18 pm-2:00 pm

2 stops16h 42m

$950
Quickest round-trip

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 6/25

7:00 am-6:18 pm

2 stops19h 18m

Chicago Midway

Tue 6/30

1:49 pm-2:00 pm

2 stops16h 11m

$1,008

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 typical price of a round-trip flight between Sofia and Chicago?

What is the cheapest month to fly to Chicago?

The month of January is, on average, the cheapest month to fly to Chicago from Sofia, with most prices found around $388. If you’re not able to fly to Chicago in January, then May is your next best option. Flight prices from Sofia to Chicago during May average around $466.

How far in advance should I book a flight from Sofia 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 $775 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 $717 on momondo.

How have Sofia to Chicago flight prices changed over time?

As of May 2026, prices for Sofia to Chicago flights are approximately 42% 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

12h 40m

Direct flights

None
The fastest flight from Sofia to Chicago takes 12h 40m
There are no direct flights from Sofia to Chicago. There are no popular flight routes from Sofia to Chicago.
Search flight deals

Frequently asked questions about flying from Sofia to Chicago

  • How far is Sofia to Chicago by plane?

    A flight from Sofia to Chicago will travel around 5185.9 mi. 12h 40m 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
Turkish AirlinesPriceFrom $616Free CancellationRating
7.4
4,373 reviews
Search Turkish Airlines flights
LOTPriceFrom $629Free CancellationRating
7.5
1,191 reviews
Search LOT flights
KLMPriceFrom $652Free CancellationRating
7.8
1,517 reviews
Search KLM flights
Austrian AirlinesPriceFrom $658Free CancellationRating
7.6
913 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom $685Free CancellationRating
7.4
9,738 reviews
Search United Airlines flights
LufthansaPriceFrom $710Free CancellationRating
6.8
8,009 reviews
Search Lufthansa flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Saint Joseph
Benton Harbor
Portage
Lansing
Valparaiso
Munster
Schererville
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.

An easier way to manage your Chicago trip

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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