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Cheap flights from Sofia to Chicago from $331

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 5/4. 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
9:00 pm - 2:55 pm
SOF
-
ORD
25h 55m2 stops
Multiple Airlines Logo
10:35 pm - 8:40 pm
ORD
-
SOF
14h 05m1 stop
$677Multiple Airlines
Wed, Jan 14 - Tue, Apr 7
British Airways Logo
9:00 pm - 5:00 pm
SOF
-
ORD
28h 00m1 stop
British Airways Logo
6:30 pm - 8:40 pm
ORD
-
SOF
18h 10m2 stops
$678British Airways
Wed, Jan 14 - Tue, Apr 7
LOT Logo
6:35 pm - 8:00 pm
SOF
-
ORD
33h 25m1 stop
LOT Logo
9:50 pm - 1:55 pm
ORD
-
SOF
32h 05m1 stop
$679LOT
Wed, Jan 21 - Thu, Oct 22
British Airways Logo
9:00 pm - 5:42 pm
SOF
-
ORD
52h 42m2 stops
British Airways Logo
11:36 am - 8:40 pm
ORD
-
SOF
25h 04m2 stops
$683British Airways
Wed, Jan 7 - Tue, Apr 7
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m1 stop
LOT Logo
5:10 pm - 1:55 am
ORD
-
SOF
24h 45m2 stops
$684LOT
Thu, Jan 15 - Thu, Oct 15
LOT Logo
6:35 pm - 8:00 pm
SOF
-
ORD
33h 25m1 stop
LOT Logo
10:55 pm - 1:50 pm
ORD
-
SOF
55h 55m2 stops
$696LOT
Wed, Jan 21 - Sun, Oct 25
LOT Logo
2:40 pm - 7:50 pm
SOF
-
ORD
13h 10m1 stop
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m1 stop
$703LOT
Mon, Apr 13 - Thu, May 7
LOT Logo
2:35 pm - 8:00 pm
SOF
-
ORD
13h 25m1 stop
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m1 stop
$704LOT
Wed, Jan 14 - Tue, Apr 7
KLM Logo
7:00 am - 4:53 pm
SOF
-
MDW
17h 53m2 stops
KLM Logo
1:10 pm - 2:00 pm
MDW
-
SOF
16h 50m2 stops
$743KLM
Tue, Apr 7 - Thu, Apr 30
KLM Logo
7:00 am - 6:32 pm
SOF
-
MDW
19h 32m2 stops
KLM Logo
1:00 pm - 2:00 pm
MDW
-
SOF
17h 00m2 stops
$744KLM
Sun, Jan 18 - Fri, Oct 23

British Airways flights from Sofia to Chicago

Our best British Airways deals on Sofia to Chicago flight tickets
British Airways
Jan 14
SOF9:00 pmSofia
28h 00m
1 stop
ORD5:00 pmChicago O'Hare Intl
Apr 7
ORD6:30 pmChicago O'Hare Intl
18h 10m
2 stops
SOF8:40 pmSofia
$678
Find similar
British Airways
Jan 7
SOF9:00 pmSofia
52h 42m
2 stops
ORD5:42 pmChicago O'Hare Intl
Apr 6
ORD8:59 pmChicago O'Hare Intl
39h 41m
2 stops
SOF8:40 pmSofia
$683
Find similar
British Airways
Jan 7
SOF9:00 pmSofia
52h 42m
2 stops
ORD5:42 pmChicago O'Hare Intl
Apr 5
ORD9:15 pmChicago O'Hare Intl
13h 55m
1 stop
SOF7:10 pmSofia
$860
Find similar

LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Jan 21
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Oct 21
ORD9:50 pmChicago O'Hare Intl
20h 05m
1 stop
SOF1:55 amSofia
$679
Find similar
LOT
Jan 15
SOF2:35 pmSofia
13h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Oct 15
ORD5:10 pmChicago O'Hare Intl
24h 45m
2 stops
SOF1:55 amSofia
$684
Find similar
LOT
Jan 21
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Oct 25
ORD10:55 pmChicago O'Hare Intl
55h 55m
2 stops
SOF1:50 pmSofia
$696
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 December 28, 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

Wed 1/14

9:00 pm-2:55 pm

2 stops25h 55m

Chicago O'Hare Intl

Tue 4/7

10:35 pm-8:40 pm

1 stop14h 05m

$677

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 1/14

9:00 pm-5:00 pm

1 stop28h 00m

Chicago O'Hare Intl

Tue 4/7

6:30 pm-8:40 pm

2 stops18h 10m

$678

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 1/21

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Thu 10/22

9:50 pm-1:55 pm

1 stop32h 05m

$679

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 1/7

9:00 pm-5:42 pm

2 stops52h 42m

Chicago O'Hare Intl

Tue 4/7

11:36 am-8:40 pm

2 stops25h 04m

$683

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/15

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Thu 10/15

5:10 pm-1:55 am

2 stops24h 45m

$684

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 1/21

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Sun 10/25

10:55 pm-1:50 pm

2 stops55h 55m

$696

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 4/13

2:40 pm-7:50 pm

1 stop13h 10m

Chicago O'Hare Intl

Thu 5/7

9:50 pm-6:00 pm

1 stop12h 10m

$703

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 1/14

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Tue 4/7

9:50 pm-6:00 pm

1 stop12h 10m

$704

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Tue 4/7

7:00 am-4:53 pm

2 stops17h 53m

Chicago Midway

Thu 4/30

1:10 pm-2:00 pm

2 stops16h 50m

$743

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Sun 1/18

7:00 am-6:32 pm

2 stops19h 32m

Chicago Midway

Fri 10/23

1:00 pm-2:00 pm

2 stops17h 00m

$744

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.

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 $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 December 2025, prices for Sofia to Chicago flights are approximately 23% 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

17h 53m

Direct flights

None
The fastest flight from Sofia to Chicago takes 17h 53m
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. 17h 53m 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
1,155 reviews
Search LOT flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,616 reviews
Search British Airways flights
KLMPriceFrom $607Free CancellationRating
7.7
1,435 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,126 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $642Free CancellationRating
6.8
7,659 reviews
Search Lufthansa flights
United AirlinesPriceFrom $643Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $647Free CancellationRating
7.6
884 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
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