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Cheap flights from Sofia to Chicago from $678

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Sofia to Chicago departing on 6/19. 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
5:25 am - 6:10 pm
SOF
-
ORD
20h 45m1 stop
LOT Logo
9:50 pm - 1:55 am
ORD
-
SOF
20h 05m1 stop
$678LOT
Fri, Jun 19 - Sat, Aug 22
British Airways Logo
5:25 pm - 7:56 pm
SOF
-
ORD
34h 31m2 stops
British Airways Logo
6:10 pm - 4:20 pm
ORD
-
SOF
15h 10m1 stop
$683British Airways
Mon, Mar 2 - Sun, Mar 15
British Airways Logo
8:00 pm - 5:01 pm
SOF
-
ORD
29h 01m2 stops
British Airways Logo
5:00 pm - 1:30 pm
ORD
-
SOF
12h 30m1 stop
$684British Airways
Mon, Apr 13 - Thu, May 7
LOT Logo
2:40 pm - 3:10 pm
SOF
-
ORD
56h 30m2 stops
LOT Logo
5:10 pm - 6:00 pm
ORD
-
SOF
16h 50m1 stop
$695LOT
Sat, Jun 20 - Sat, Aug 22
Multiple Airlines Logo
7:15 pm - 2:45 pm
SOF
-
ORD
27h 30m2 stops
Multiple Airlines Logo
4:38 pm - 7:00 pm
ORD
-
SOF
18h 22m2 stops
$702Multiple Airlines
Sat, Jan 17 - Fri, Jan 23
LOT Logo
6:35 pm - 8:00 pm
SOF
-
ORD
33h 25m1 stop
LOT Logo
9:55 pm - 1:50 pm
ORD
-
SOF
31h 55m1 stop
$703LOT
Tue, Feb 3 - Wed, Feb 25
LOT Logo
6:45 pm - 3:10 pm
SOF
-
ORD
28h 25m1 stop
LOT Logo
5:10 pm - 6:00 pm
ORD
-
SOF
16h 50m1 stop
$707LOT
Wed, Jun 24 - Thu, Aug 20
Multiple Airlines Logo
9:25 pm - 11:55 am
SOF
-
ORD
22h 30m1 stop
Multiple Airlines Logo
8:35 pm - 8:40 pm
ORD
-
SOF
40h 05m2 stops
$708Multiple Airlines
Wed, Apr 1 - Mon, Apr 13
KLM Logo
7:00 am - 5:29 pm
SOF
-
MDW
18h 29m2 stops
KLM Logo
12:46 pm - 2:05 pm
MDW
-
SOF
17h 19m2 stops
$744KLM
Fri, Jan 23 - Thu, Feb 5
KLM Logo
7:00 am - 5:29 pm
SOF
-
MDW
18h 29m2 stops
KLM Logo
1:00 pm - 2:00 pm
MDW
-
SOF
17h 00m2 stops
$817KLM
Mon, Jan 19 - Thu, Oct 22

United Airlines flights from Sofia to Chicago

Our best United Airlines deals on Sofia to Chicago flight tickets
United Airlines
Mar 30
SOF6:20 amSofia
12h 40m
1 stop
ORD11:00 amChicago O'Hare Intl
May 4
ORD10:45 amChicago O'Hare Intl
17h 25m
2 stops
SOF12:10 pmSofia
$751
Find similar
United Airlines
Mar 14
SOF6:25 amSofia
16h 55m
1 stop
ORD4:20 pmChicago O'Hare Intl
May 26
ORD6:30 pmChicago O'Hare Intl
20h 20m
1 stop
SOF10:50 pmSofia
$752
Find similar
United Airlines
Jan 23
SOF6:10 amSofia
16h 45m
2 stops
ORD2:55 pmChicago O'Hare Intl
Feb 5
ORD9:50 pmChicago O'Hare Intl
16h 55m
1 stop
SOF10:45 pmSofia
$754
Find similar

LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Jan 23
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Mar 7
ORD9:55 pmChicago O'Hare Intl
11h 55m
1 stop
SOF5:50 pmSofia
$692
Find similar
LOT
Jan 27
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Mar 10
ORD10:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$695
Find similar
LOT
Feb 3
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Feb 25
ORD9:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$703
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 January 2, 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 6/19

5:25 am-6:10 pm

1 stop20h 45m

Chicago O'Hare Intl

Sat 8/22

9:50 pm-1:55 am

1 stop20h 05m

$678

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 3/2

5:25 pm-7:56 pm

2 stops34h 31m

Chicago O'Hare Intl

Sun 3/15

6:10 pm-4:20 pm

1 stop15h 10m

$683

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 4/13

8:00 pm-5:01 pm

2 stops29h 01m

Chicago O'Hare Intl

Thu 5/7

5:00 pm-1:30 pm

1 stop12h 30m

$684

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 6/20

2:40 pm-3:10 pm

2 stops56h 30m

Chicago O'Hare Intl

Sat 8/22

5:10 pm-6:00 pm

1 stop16h 50m

$695

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 1/17

7:15 pm-2:45 pm

2 stops27h 30m

Chicago O'Hare Intl

Fri 1/23

4:38 pm-7:00 pm

2 stops18h 22m

$702

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 2/3

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Wed 2/25

9:55 pm-1:50 pm

1 stop31h 55m

$703

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 6/24

6:45 pm-3:10 pm

1 stop28h 25m

Chicago O'Hare Intl

Thu 8/20

5:10 pm-6:00 pm

1 stop16h 50m

$707

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 4/1

9:25 pm-11:55 am

1 stop22h 30m

Chicago O'Hare Intl

Mon 4/13

8:35 pm-8:40 pm

2 stops40h 05m

$708

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Fri 1/23

7:00 am-5:29 pm

2 stops18h 29m

Chicago Midway

Thu 2/5

12:46 pm-2:05 pm

2 stops17h 19m

$744

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Mon 1/19

7:00 am-5:29 pm

2 stops18h 29m

Chicago Midway

Thu 10/22

1:00 pm-2:00 pm

2 stops17h 00m

$817

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 $674. 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 $726 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 $630 on momondo.

How have Sofia to Chicago flight prices changed over time?

As of January 2026, prices for Sofia to Chicago flights are approximately 24% 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

13h 45m

Direct flights

None
The fastest flight from Sofia to Chicago takes 13h 45m
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. 13h 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
LOTPriceFrom $532Free CancellationRating
7.5
1,160 reviews
Search LOT flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,635 reviews
Search British Airways flights
KLMPriceFrom $607Free CancellationRating
7.7
1,435 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,139 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $642Free CancellationRating
6.8
7,674 reviews
Search Lufthansa flights
United AirlinesPriceFrom $643Free CancellationRating
7.4
9,134 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $647Free CancellationRating
7.6
888 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