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Cheap flights from Sofia to Chicago from $249

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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 - 3:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
32h 35m1 stop Warsaw Frederic Chopin
LOT Logo
9:50 pm - 6:00 pmORD  Chicago O'Hare Intl-SOF Sofia
12h 10m1 stop Warsaw Frederic Chopin
$807LOT
Wed, Sep 9 - Wed, Sep 30
LOT Logo
2:35 pm - 3:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
32h 35m1 stop Warsaw Frederic Chopin
LOT Logo
9:50 pm - 6:00 pmORD  Chicago O'Hare Intl-SOF Sofia
12h 10m1 stop Warsaw Frederic Chopin
$809LOT
Wed, Sep 9 - Wed, Sep 30
Multiple Airlines Logo
2:20 pm - 5:20 pmSOF  Sofia-ORD Chicago O'Hare Intl
35h 00m2 stops Dublin Reykjavik Keflavik Intl
Multiple Airlines Logo
9:50 pm - 10:55 pmORD  Chicago O'Hare Intl-SOF Sofia
17h 05m1 stop Munich Franz Josef Strauss
$810Multiple Airlines
Wed, Nov 18 - Mon, Feb 8
Multiple Airlines Logo
6:00 am - 3:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
17h 10m1 stop Krakow J. Paul II Balice
Multiple Airlines Logo
5:10 pm - 3:45 pmORD  Chicago O'Hare Intl-SOF Sofia
14h 35m1 stop Krakow J. Paul II Balice
$818Multiple Airlines
Fri, Oct 9 - Thu, Oct 22
Turkish Airlines Logo
3:50 pm - 9:40 amSOF  Sofia-ORD Chicago O'Hare Intl
25h 50m1 stop Istanbul
Turkish Airlines Logo
8:15 pm - 3:10 pmORD  Chicago O'Hare Intl-SOF Sofia
34h 55m1 stop Istanbul
$827Turkish Airlines
Mon, Sep 28 - Wed, Dec 2
Turkish Airlines Logo
3:50 pm - 9:40 amSOF  Sofia-ORD Chicago O'Hare Intl
25h 50m1 stop Istanbul
Turkish Airlines Logo
8:15 pm - 8:55 pmORD  Chicago O'Hare Intl-SOF Sofia
16h 40m1 stop Istanbul
$827Turkish Airlines
Mon, Sep 28 - Sun, Dec 6
Lufthansa Logo
6:10 am - 12:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
14h 45m1 stop Frankfurt am Main
Lufthansa Logo
3:35 pm - 12:10 pmORD  Chicago O'Hare Intl-SOF Sofia
12h 35m1 stop Munich Franz Josef Strauss
$853Lufthansa
Tue, Sep 15 - Fri, Oct 16
Lufthansa Logo
6:10 am - 12:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
14h 45m1 stop Frankfurt am Main
Lufthansa Logo
9:40 pm - 6:40 pmORD  Chicago O'Hare Intl-SOF Sofia
13h 00m1 stop Munich Franz Josef Strauss
$853Lufthansa
Tue, Sep 15 - Thu, Oct 15
United Airlines Logo
2:10 pm - 7:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
13h 45m1 stop Frankfurt am Main
United Airlines Logo
8:55 am - 1:15 pmORD  Chicago O'Hare Intl-SOF Sofia
20h 20m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss
$862United Airlines
Fri, Sep 4 - Sat, Dec 5
United Airlines Logo
6:10 am - 2:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
16h 45m1 stop Frankfurt am Main
United Airlines Logo
6:00 pm - 11:15 pmORD  Chicago O'Hare Intl-SOF Sofia
21h 15m1 stop Munich Franz Josef Strauss
$863United Airlines
Tue, Sep 15 - Mon, Oct 19

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LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Sep 9
SOF2:35 pmSofia
32h 35m
1 stop
ORD3:10 pmChicago O'Hare Intl
Sep 30
ORD9:50 pmChicago O'Hare Intl
12h 10m
1 stop
SOF6:00 pmSofia
$807
LOT
Sep 9
SOF2:35 pmSofia
32h 35m
1 stop
ORD3:10 pmChicago O'Hare Intl
Sep 30
ORD9:50 pmChicago O'Hare Intl
12h 10m
1 stop
SOF6:00 pmSofia
$809
LOT
Sep 1
SOF6:45 pmSofia
28h 25m
2 stops
ORD3:10 pmChicago O'Hare Intl
Oct 31
ORD10:50 pmChicago O'Hare Intl
12h 05m
1 stop
SOF5:55 pmSofia
$811

United Airlines flights from Sofia to Chicago

Our best United Airlines deals on Sofia to Chicago flight tickets
United Airlines
Aug 31
SOF6:20 amSofia
16h 35m
1 stop
ORD2:55 pmChicago O'Hare Intl
Dec 4
ORD11:15 amChicago O'Hare Intl
18h 00m
2 stops
SOF1:15 pmSofia
$862
United Airlines
Sep 3
SOF2:10 pmSofia
13h 45m
1 stop
ORD7:55 pmChicago O'Hare Intl
Dec 2
ORD10:35 pmChicago O'Hare Intl
16h 25m
1 stop
SOF11:00 pmSofia
$863
United Airlines
Sep 17
SOF2:10 pmSofia
13h 45m
1 stop
ORD7:55 pmChicago O'Hare Intl
Oct 3
ORD10:30 pmChicago O'Hare Intl
16h 20m
1 stop
SOF10:50 pmSofia
$864

momondo Fare Finder

 
Use the filters below to find and compare flights from Sofia to Chicago that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Wed 9/9

2:35 pm-3:10 pm

1 stop32h 35m

Chicago O'Hare Intl

Wed 9/30

9:50 pm-6:00 pm

1 stop12h 10m

$807

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Wed 9/9

2:35 pm-3:10 pm

1 stop32h 35m

Chicago O'Hare Intl

Wed 9/30

9:50 pm-6:00 pm

1 stop12h 10m

$809

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Wed 11/18

2:20 pm-5:20 pm

2 stops35h 00m

Chicago O'Hare Intl

Mon 2/8

9:50 pm-10:55 pm

1 stop17h 05m

$810

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Fri 10/9

6:00 am-3:10 pm

1 stop17h 10m

Chicago O'Hare Intl

Thu 10/22

5:10 pm-3:45 pm

1 stop14h 35m

$818

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Mon 9/28

3:50 pm-9:40 am

1 stop25h 50m

Chicago O'Hare Intl

Wed 12/2

8:15 pm-3:10 pm

1 stop34h 55m

$827

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Mon 9/28

3:50 pm-9:40 am

1 stop25h 50m

Chicago O'Hare Intl

Sun 12/6

8:15 pm-8:55 pm

1 stop16h 40m

$827
Quickest round-trip

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Tue 9/15

6:10 am-12:55 pm

1 stop14h 45m

Chicago O'Hare Intl

Fri 10/16

3:35 pm-12:10 pm

1 stop12h 35m

$853

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Tue 9/15

6:10 am-12:55 pm

1 stop14h 45m

Chicago O'Hare Intl

Thu 10/15

9:40 pm-6:40 pm

1 stop13h 00m

$853

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Fri 9/4

2:10 pm-7:55 pm

1 stop13h 45m

Chicago O'Hare Intl

Sat 12/5

8:55 am-1:15 pm

2 stops20h 20m

$862

SofiaChicago

SOF Sofia - ORD Chicago O'Hare Intl

SOFORD

Sofia

Tue 9/15

6:10 am-2:55 pm

1 stop16h 45m

Chicago O'Hare Intl

Mon 10/19

6:00 pm-11:15 pm

1 stop21h 15m

$863

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $778 to $949.
The lowest price recently found on this route was $807.

What is the cheapest month to fly to Chicago?

The month of November is, on average, the cheapest month to fly to Chicago from Sofia, with most prices found around $752. If you’re not able to fly to Chicago in November, then May is your next best option. Flight prices from Sofia to Chicago during May average around $774.

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 $808 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 August 2026, prices for Sofia to Chicago flights are approximately 2% more expensive 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

Best Price Found

$249

Fastest flight time

14h 45m

Direct flights

None
The best one-way flight to Chicago from Sofia in the past 72 hours is $249. The best round-trip flight deal from Sofia to Chicago found on momondo in the last 72 hours is $807.
The fastest flight from Sofia to Chicago takes 14h 45m
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. 14h 45m 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 $627Free CancellationRating
7.4
4,480 reviews
Search Turkish Airlines flights
LOTPriceFrom $629Free CancellationRating
7.5
1,213 reviews
Search LOT flights
KLMPriceFrom $652Free CancellationRating
7.8
1,565 reviews
Search KLM flights
LufthansaPriceFrom $714Free CancellationRating
6.8
8,213 reviews
Search Lufthansa flights
United AirlinesPriceFrom $718Free CancellationRating
7.4
10,115 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $806Free CancellationRating
7.6
949 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
Portage
Benton Harbor
Lansing
Saint Joseph
Valparaiso
Schererville
Munster
Chesterton
Monticello
Porter
Crown Point
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

Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport