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Cheap flights from Sofia to Chicago from $324

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 11/17. 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 (SOF-CHI)

Cheap round-trip flights

Turkish Airlines Logo
3:35 pm - 10:00 pmSOF-ORD
14h 25m1 stop
Turkish Airlines Logo
7:50 pm - 2:45 pmORD-SOF
34h 55m1 stop
$617Turkish Airlines
Find Deal
Mon, Sep 22 - Wed, Oct 8
Turkish Airlines Logo
9:15 pm - 9:40 amSOF-ORD
20h 25m1 stop
Turkish Airlines Logo
7:50 pm - 2:45 pmORD-SOF
34h 55m1 stop
$623Turkish Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
Turkish Airlines Logo
3:35 pm - 10:00 pmSOF-ORD
14h 25m1 stop
Turkish Airlines Logo
11:25 am - 2:45 pmORD-SOF
19h 20m1 stop
$624Turkish Airlines
Find Deal
Mon, Sep 22 - Wed, Oct 8
LOT Logo
5:20 am - 3:10 pmSOF-ORD
17h 50m1 stop
LOT Logo
9:55 pm - 1:50 pmORD-SOF
31h 55m1 stop
$636LOT
Find Deal
Thu, Oct 2 - Fri, Nov 7
LOT Logo
6:40 pm - 7:40 pmSOF-ORD
33h 00m1 stop
LOT Logo
10:55 pm - 5:50 pmORD-SOF
11h 55m1 stop
$637LOT
Find Deal
Tue, Sep 30 - Fri, Mar 27
United Airlines Logo
6:20 am - 12:55 pmSOF-ORD
14h 35m1 stop
United Airlines Logo
6:00 pm - 10:45 pmORD-SOF
20h 45m1 stop
$641United Airlines
Find Deal
Tue, Oct 21 - Sat, Nov 8
United Airlines Logo
6:15 am - 7:55 pmSOF-ORD
21h 40m1 stop
United Airlines Logo
6:00 pm - 6:20 pmORD-SOF
16h 20m1 stop
$642United Airlines
Find Deal
Wed, Oct 22 - Tue, Nov 4
Austrian Airlines Logo
8:00 am - 6:30 pmSOF-ORD
18h 30m2 stops
Austrian Airlines Logo
1:00 pm - 6:00 pmORD-SOF
21h 00m2 stops
$668Austrian Airlines
Find Deal
Thu, Oct 2 - Sat, Nov 8
KLM Logo
7:00 am - 4:41 pmSOF-ORD
17h 41m2 stops
KLM Logo
1:25 pm - 2:05 pmORD-SOF
17h 40m2 stops
$675KLM
Find Deal
Mon, Oct 6 - Fri, Oct 31
KLM Logo
7:00 am - 5:35 pmSOF-MDW
18h 35m2 stops
KLM Logo
3:00 pm - 2:05 pmMDW-SOF
15h 05m2 stops
$675KLM
Find Deal
Thu, Oct 2 - Sat, Nov 8

Turkish Airlines flights from Sofia to Chicago

Our best Turkish Airlines deals on Sofia to Chicago flight tickets
Turkish Airlines
Sep 22
SOF3:35 pmSofia
14h 25m
1 stop
ORD10:00 pmChicago O'Hare Intl
Oct 8
ORD7:50 pmChicago O'Hare Intl
34h 55m
1 stop
SOF2:45 pmSofia
$617
Find similar
Turkish Airlines
Sep 29
SOF9:15 pmSofia
20h 25m
1 stop
ORD9:40 amChicago O'Hare Intl
Oct 6
ORD7:50 pmChicago O'Hare Intl
34h 55m
1 stop
SOF2:45 pmSofia
$623
Find similar
Turkish Airlines
Sep 22
SOF3:35 pmSofia
14h 25m
1 stop
ORD10:00 pmChicago O'Hare Intl
Oct 8
ORD11:25 amChicago O'Hare Intl
19h 20m
1 stop
SOF2:45 pmSofia
$624
Find similar

LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Oct 2
SOF5:20 amSofia
17h 50m
1 stop
ORD3:10 pmChicago O'Hare Intl
Nov 7
ORD9:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$636
Find similar
LOT
Sep 30
SOF6:40 pmSofia
33h 00m
1 stop
ORD7:40 pmChicago O'Hare Intl
Mar 27
ORD10:55 pmChicago O'Hare Intl
11h 55m
1 stop
SOF5:50 pmSofia
$637
Find similar
LOT
Oct 23
SOF5:20 amSofia
17h 50m
1 stop
ORD3:10 pmChicago O'Hare Intl
Nov 4
ORD9:55 pmChicago O'Hare Intl
11h 55m
1 stop
SOF5:50 pmSofia
$638
Find similar

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 August 17, 2025.
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

Mon 9/22

3:35 pm-10:00 pm

1 stop14h 25m

Chicago O'Hare Intl

Wed 10/8

7:50 pm-2:45 pm

1 stop34h 55m

$617

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 9/29

9:15 pm-9:40 am

1 stop20h 25m

Chicago O'Hare Intl

Mon 10/6

7:50 pm-2:45 pm

1 stop34h 55m

$623

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 9/22

3:35 pm-10:00 pm

1 stop14h 25m

Chicago O'Hare Intl

Wed 10/8

11:25 am-2:45 pm

1 stop19h 20m

$624

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 10/2

5:20 am-3:10 pm

1 stop17h 50m

Chicago O'Hare Intl

Fri 11/7

9:55 pm-1:50 pm

1 stop31h 55m

$636

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 9/30

6:40 pm-7:40 pm

1 stop33h 00m

Chicago O'Hare Intl

Fri 3/27

10:55 pm-5:50 pm

1 stop11h 55m

$637

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 10/21

6:20 am-12:55 pm

1 stop14h 35m

Chicago O'Hare Intl

Sat 11/8

6:00 pm-10:45 pm

1 stop20h 45m

$641

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 10/22

6:15 am-7:55 pm

1 stop21h 40m

Chicago O'Hare Intl

Tue 11/4

6:00 pm-6:20 pm

1 stop16h 20m

$642

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 10/2

8:00 am-6:30 pm

2 stops18h 30m

Chicago O'Hare Intl

Sat 11/8

1:00 pm-6:00 pm

2 stops21h 00m

$668

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 10/6

7:00 am-4:41 pm

2 stops17h 41m

Chicago O'Hare Intl

Fri 10/31

1:25 pm-2:05 pm

2 stops17h 40m

$675

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 10/2

7:00 am-5:35 pm

2 stops18h 35m

Chicago Midway

Sat 11/8

3:00 pm-2:05 pm

2 stops15h 05m

$675

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 November is, on average, the cheapest month to fly to Chicago from Sofia, with most prices found around $645. If you’re not able to fly to Chicago in November, then October is your next best option. Flight prices from Sofia to Chicago during October average around $654.

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

The cheapest day to depart on your flight to Chicago is on a Thursday when prices can be found for as low as $666. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Sofia to Chicago for around $785.

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

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Sofia to Chicago during this time can be as low as $666. In contrast, the most expensive time of day to depart to Chicago is in the evening when prices are around $768.

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 $706 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 $625 on momondo.

How have Sofia to Chicago flight prices changed over time?

As of August 2025, prices for Sofia to Chicago flights are approximately 26% 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

Best Price Found

$324

Fastest flight time

12h 40m

Direct flights

None

Airports in Chicago

2 airports
The best one-way flight to Chicago from Sofia in the past 72 hours is $324. The best round-trip flight deal from Sofia to Chicago found on momondo in the last 72 hours is $617.
The fastest flight from Sofia to Chicago takes 12h 40m
There are no direct flights from Sofia to Chicago. Popular non-direct routes for this connection are Sofia Airport - Chicago Midway Airport and Sofia Airport - Chicago O'Hare Intl Airport.
There are 2 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)
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  • 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
KLMPriceFrom $460Free CancellationRating
7.8
1,385 reviews
Search KLM flights
LOTPriceFrom $532Free CancellationRating
7.6
1,109 reviews
Search LOT flights
Air FrancePriceFrom $560Free CancellationRating
7.4
1,468 reviews
Search Air France flights
Austrian AirlinesPriceFrom $576Free CancellationRating
7.6
828 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom $603Free CancellationRating
7.4
8,919 reviews
Search United Airlines flights
LufthansaPriceFrom $615Free CancellationRating
6.8
7,325 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
3,943 reviews
Search Turkish 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
Lansing
Portage
Schererville
Valparaiso
Crown Point
Munster
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