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Cheap flights from Sofia to Chicago from $357

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 9/16. 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
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
5:25 am - 7:50 pm
SOF
-
ORD
22h 25m
1 stop
LOT Logo
9:50 pm - 1:55 am
ORD
-
SOF
20h 05m
1 stop
$710LOT
Wed, Sep 9 - Wed, Sep 30
LOT Logo
5:25 am - 7:50 pm
SOF
-
ORD
22h 25m
1 stop
LOT Logo
9:50 pm - 1:50 pm
ORD
-
SOF
32h 00m
1 stop
$711LOT
Wed, Sep 23 - Wed, Oct 14
LOT Logo
6:45 pm - 7:50 pm
SOF
-
ORD
33h 05m
1 stop
LOT Logo
5:10 pm - 1:50 pm
ORD
-
SOF
12h 40m
1 stop
$712LOT
Wed, Sep 9 - Wed, Sep 30
LOT Logo
6:45 pm - 7:50 pm
SOF
-
ORD
33h 05m
1 stop
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m
1 stop
$713LOT
Wed, Sep 9 - Wed, Sep 30
LOT Logo
6:45 pm - 7:50 pm
SOF
-
ORD
33h 05m
1 stop
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m
1 stop
$715LOT
Wed, Sep 9 - Wed, Sep 30
LOT Logo
6:45 pm - 3:05 pm
SOF
-
ORD
28h 20m
2 stops
LOT Logo
5:10 pm - 6:00 pm
ORD
-
SOF
16h 50m
1 stop
$722LOT
Wed, Sep 9 - Wed, Sep 30
KLM Logo
7:00 am - 6:33 pm
SOF
-
MDW
19h 33m
2 stops
KLM Logo
1:14 pm - 2:00 pm
MDW
-
SOF
16h 46m
2 stops
$777KLM
Thu, Sep 17 - Sat, Oct 3
KLM Logo
7:00 am - 6:33 pm
SOF
-
MDW
19h 33m
2 stops
KLM Logo
1:14 pm - 2:00 pm
MDW
-
SOF
16h 46m
2 stops
$843KLM
Thu, Sep 17 - Sat, Oct 3
KLM Logo
7:00 am - 6:33 pm
SOF
-
MDW
19h 33m
2 stops
KLM Logo
1:14 pm - 2:00 pm
MDW
-
SOF
16h 46m
2 stops
$884KLM
Thu, Sep 17 - Sat, Oct 3
Multiple Airlines Logo
7:00 am - 6:18 pm
SOF
-
MDW
19h 18m
2 stops
Multiple Airlines Logo
1:27 pm - 2:00 pm
MDW
-
SOF
16h 33m
2 stops
$930Multiple Airlines
Mon, Jul 27 - Wed, Aug 26

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KLM flights from Sofia to Chicago

Our best KLM deals on Sofia to Chicago flight tickets
KLM
Sep 17
SOF7:00 amSofia
15h 15m
1 stop
ORD2:15 pmChicago O'Hare Intl
Oct 3
ORD4:20 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:00 pmSofia
$762
KLM
Sep 17
SOF7:00 amSofia
15h 15m
1 stop
ORD2:15 pmChicago O'Hare Intl
Oct 3
ORD4:20 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:00 pmSofia
$764
KLM
Sep 11
SOF7:00 amSofia
15h 15m
1 stop
ORD2:15 pmChicago O'Hare Intl
Oct 18
ORD1:35 pmChicago O'Hare Intl
16h 25m
2 stops
SOF2:00 pmSofia
$765

Air Canada flights from Sofia to Chicago

Our best Air Canada deals on Sofia to Chicago flight tickets
Air Canada
Sep 10
SOF6:30 amSofia
21h 42m
2 stops
ORD8:12 pmChicago O'Hare Intl
Oct 15
ORD11:05 amChicago O'Hare Intl
23h 20m
2 stops
SOF6:25 pmSofia
$796
Air Canada
Sep 9
SOF6:10 amSofia
33h 41m
2 stops
ORD7:51 amChicago O'Hare Intl
Oct 14
ORD8:45 amChicago O'Hare Intl
20h 40m
2 stops
SOF1:25 pmSofia
$808
Air Canada
Jun 24
SOF1:50 pmSofia
36h 53m
2 stops
ORD6:43 pmChicago O'Hare Intl
Jul 14
ORD8:45 amChicago O'Hare Intl
25h 55m
2 stops
SOF6:40 pmSofia
$905

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 June 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

Wed 9/9

5:25 am-7:50 pm

1 stop22h 25m

Chicago O'Hare Intl

Wed 9/30

9:50 pm-1:55 am

1 stop20h 05m

$710

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/23

5:25 am-7:50 pm

1 stop22h 25m

Chicago O'Hare Intl

Wed 10/14

9:50 pm-1:50 pm

1 stop32h 00m

$711

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/9

6:45 pm-7:50 pm

1 stop33h 05m

Chicago O'Hare Intl

Wed 9/30

5:10 pm-1:50 pm

1 stop12h 40m

$712

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/9

6:45 pm-7:50 pm

1 stop33h 05m

Chicago O'Hare Intl

Wed 9/30

9:50 pm-6:00 pm

1 stop12h 10m

$713

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/9

6:45 pm-7:50 pm

1 stop33h 05m

Chicago O'Hare Intl

Wed 9/30

9:50 pm-6:00 pm

1 stop12h 10m

$715

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 9/9

6:45 pm-3:05 pm

2 stops28h 20m

Chicago O'Hare Intl

Wed 9/30

5:10 pm-6:00 pm

1 stop16h 50m

$722

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 9/17

7:00 am-6:33 pm

2 stops19h 33m

Chicago Midway

Sat 10/3

1:14 pm-2:00 pm

2 stops16h 46m

$777

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 9/17

7:00 am-6:33 pm

2 stops19h 33m

Chicago Midway

Sat 10/3

1:14 pm-2:00 pm

2 stops16h 46m

$843

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 9/17

7:00 am-6:33 pm

2 stops19h 33m

Chicago Midway

Sat 10/3

1:14 pm-2:00 pm

2 stops16h 46m

$884
Quickest round-trip

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Mon 7/27

7:00 am-6:18 pm

2 stops19h 18m

Chicago Midway

Wed 8/26

1:27 pm-2:00 pm

2 stops16h 33m

$930

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 $785 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 June 2026, prices for Sofia to Chicago flights are approximately 17% 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

Fastest flight time

14h 25m

Direct flights

None
The fastest flight from Sofia to Chicago takes 14h 25m
There are no direct flights from Sofia to Chicago. There are no popular flight routes from Sofia to Chicago.
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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 25m 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 $594Free CancellationRating
7.4
4,409 reviews
Search Turkish Airlines flights
LOTPriceFrom $629Free CancellationRating
7.5
1,201 reviews
Search LOT flights
KLMPriceFrom $652Free CancellationRating
7.8
1,530 reviews
Search KLM flights
Austrian AirlinesPriceFrom $658Free CancellationRating
7.6
937 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom $703Free CancellationRating
7.4
9,860 reviews
Search United Airlines flights
LufthansaPriceFrom $710Free CancellationRating
6.8
8,075 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
Benton Harbor
Portage
Saint Joseph
Lansing
Valparaiso
Schererville
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