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Cheap flights from Sofia to Chicago from $361

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 3/11. 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.
Multiple Airlines Logo
7:00 am - 2:20 pm
SOF
-
ORD
15h 20m
1 stop
Multiple Airlines Logo
6:20 pm - 1:55 pm
ORD
-
SOF
12h 35m
1 stop
$647Multiple Airlines
Fri, Feb 20 - Sun, Mar 8
KLM Logo
7:00 am - 2:20 pm
SOF
-
ORD
15h 20m
1 stop
KLM Logo
5:25 pm - 2:05 pm
ORD
-
SOF
13h 40m
1 stop
$650KLM
Mon, Mar 2 - Wed, Mar 18
Multiple Airlines Logo
7:00 am - 5:53 pm
SOF
-
ORD
18h 53m
2 stops
Multiple Airlines Logo
6:20 pm - 1:55 pm
ORD
-
SOF
12h 35m
1 stop
$657Multiple Airlines
Fri, Feb 20 - Sun, Mar 8
LOT Logo
6:35 pm - 7:55 pm
SOF
-
ORD
33h 20m
2 stops
LOT Logo
10:55 pm - 1:50 pm
ORD
-
SOF
31h 55m
1 stop
$658LOT
Sun, Feb 22 - Tue, Mar 10
KLM Logo
7:00 am - 5:53 pm
SOF
-
ORD
18h 53m
2 stops
KLM Logo
5:25 pm - 2:05 pm
ORD
-
SOF
13h 40m
1 stop
$661KLM
Mon, Mar 2 - Wed, Mar 18
LOT Logo
6:35 pm - 8:00 pm
SOF
-
ORD
33h 25m
1 stop
LOT Logo
10:55 pm - 5:50 pm
ORD
-
SOF
11h 55m
1 stop
$662LOT
Thu, Feb 19 - Mon, Mar 16
KLM Logo
7:00 am - 5:53 pm
SOF
-
ORD
18h 53m
2 stops
KLM Logo
5:25 pm - 2:05 pm
ORD
-
SOF
13h 40m
1 stop
$663KLM
Fri, Feb 20 - Sun, Mar 8
KLM Logo
7:00 am - 4:25 pm
SOF
-
ORD
17h 25m
2 stops
KLM Logo
4:50 pm - 2:00 pm
ORD
-
SOF
13h 10m
1 stop
$672KLM
Thu, May 14 - Mon, May 25
Turkish Airlines Logo
9:05 pm - 9:40 am
SOF
-
ORD
20h 35m
1 stop
Turkish Airlines Logo
8:10 pm - 8:15 pm
ORD
-
SOF
16h 05m
1 stop
$673Turkish Airlines
Fri, Apr 24 - Wed, Apr 29
LOT Logo
6:35 pm - 8:00 pm
SOF
-
ORD
33h 25m
1 stop
LOT Logo
10:55 pm - 1:50 pm
ORD
-
SOF
31h 55m
1 stop
$674LOT
Thu, Feb 19 - Mon, Mar 9

KLM flights from Sofia to Chicago

Our best KLM deals on Sofia to Chicago flight tickets
KLM
Mar 2
SOF7:00 amSofia
15h 20m
1 stop
ORD2:20 pmChicago O'Hare Intl
Mar 18
ORD5:25 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:05 pmSofia
$650
KLM
Mar 2
SOF7:00 amSofia
18h 53m
2 stops
ORD5:53 pmChicago O'Hare Intl
Mar 18
ORD5:25 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:05 pmSofia
$661
KLM
Feb 20
SOF7:00 amSofia
18h 53m
2 stops
ORD5:53 pmChicago O'Hare Intl
Mar 8
ORD5:25 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:05 pmSofia
$663

LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Feb 22
SOF6:35 pmSofia
33h 20m
2 stops
ORD7:55 pmChicago O'Hare Intl
Mar 10
ORD10:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$658
LOT
Feb 19
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Mar 16
ORD10:55 pmChicago O'Hare Intl
11h 55m
1 stop
SOF5:50 pmSofia
$662
LOT
Feb 19
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Mar 9
ORD10:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$674

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 February 6, 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 2/20

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Sun 3/8

6:20 pm-1:55 pm

1 stop12h 35m

$647

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 3/2

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Wed 3/18

5:25 pm-2:05 pm

1 stop13h 40m

$650

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/20

7:00 am-5:53 pm

2 stops18h 53m

Chicago O'Hare Intl

Sun 3/8

6:20 pm-1:55 pm

1 stop12h 35m

$657

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 2/22

6:35 pm-7:55 pm

2 stops33h 20m

Chicago O'Hare Intl

Tue 3/10

10:55 pm-1:50 pm

1 stop31h 55m

$658

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 3/2

7:00 am-5:53 pm

2 stops18h 53m

Chicago O'Hare Intl

Wed 3/18

5:25 pm-2:05 pm

1 stop13h 40m

$661

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 2/19

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Mon 3/16

10:55 pm-5:50 pm

1 stop11h 55m

$662

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 2/20

7:00 am-5:53 pm

2 stops18h 53m

Chicago O'Hare Intl

Sun 3/8

5:25 pm-2:05 pm

1 stop13h 40m

$663

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 5/14

7:00 am-4:25 pm

2 stops17h 25m

Chicago O'Hare Intl

Mon 5/25

4:50 pm-2:00 pm

1 stop13h 10m

$672

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 4/24

9:05 pm-9:40 am

1 stop20h 35m

Chicago O'Hare Intl

Wed 4/29

8:10 pm-8:15 pm

1 stop16h 05m

$673

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 2/19

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Mon 3/9

10:55 pm-1:50 pm

1 stop31h 55m

$674

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 $732 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 $620 on momondo.

How have Sofia to Chicago flight prices changed over time?

As of February 2026, prices for Sofia to Chicago flights are approximately 8% 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 $576Free CancellationRating
7.5
1,179 reviews
Search LOT flights
KLMPriceFrom $621Free CancellationRating
7.7
1,449 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,210 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $649Free CancellationRating
7.4
9,242 reviews
Search United Airlines flights
LufthansaPriceFrom $650Free CancellationRating
6.8
7,762 reviews
Search Lufthansa flights
Austrian AirlinesPriceFrom $658Free CancellationRating
7.5
896 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