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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 1/14. 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.
KLM Logo
7:00 am - 5:55 pmSOF-ORD
18h 55m2 stops
KLM Logo
4:25 pm - 2:05 pmORD-SOF
13h 40m1 stop
$681KLM
Find Deal
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
7:00 am - 5:55 pmSOF-ORD
18h 55m2 stops
Multiple Airlines Logo
1:58 pm - 2:05 pmORD-SOF
16h 07m2 stops
$684Multiple Airlines
Find Deal
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
7:00 am - 6:32 pmSOF-MDW
19h 32m2 stops
Multiple Airlines Logo
1:49 pm - 2:05 pmMDW-SOF
16h 16m2 stops
$684Multiple Airlines
Find Deal
Thu, Jan 15 - Wed, Jan 28
KLM Logo
7:00 am - 5:55 pmSOF-ORD
18h 55m2 stops
KLM Logo
4:25 pm - 2:05 pmORD-SOF
13h 40m1 stop
$686KLM
Find Deal
Thu, Jan 15 - Wed, Jan 28
Air France Logo
7:10 am - 3:10 pmSOF-ORD
16h 00m1 stop
Air France Logo
5:20 pm - 2:05 pmORD-SOF
12h 45m1 stop
$687Air France
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Thu, Dec 18 - Mon, Jan 12
KLM Logo
7:00 am - 2:20 pmSOF-ORD
15h 20m1 stop
KLM Logo
1:55 pm - 2:05 pmORD-SOF
16h 10m2 stops
$689KLM
Find Deal
Wed, Dec 17 - Sat, Jan 17
LOT Logo
6:35 pm - 8:00 pmSOF-ORD
33h 25m1 stop
LOT Logo
5:15 pm - 1:55 pmORD-SOF
12h 40m1 stop
$690LOT
Find Deal
Fri, Dec 12 - Thu, Jun 4
Air France Logo
7:10 am - 3:10 pmSOF-ORD
16h 00m1 stop
Air France Logo
1:55 pm - 1:55 pmORD-SOF
16h 00m2 stops
$691Air France
Find Deal
Thu, Dec 18 - Tue, Jan 13
Lufthansa Logo
6:05 am - 1:10 pmSOF-ORD
15h 05m2 stops
Lufthansa Logo
4:20 pm - 1:50 pmORD-SOF
13h 30m1 stop
$694Lufthansa
Find Deal
Mon, Dec 15 - Thu, Jan 22
Lufthansa Logo
6:00 am - 3:20 pmSOF-ORD
17h 20m1 stop
Lufthansa Logo
6:00 pm - 1:15 pmORD-SOF
11h 15m1 stop
$695Lufthansa
Find Deal
Thu, Jan 15 - Wed, Jan 28

LOT flights from Sofia to Chicago

Our best LOT deals on Sofia to Chicago flight tickets
LOT
Dec 12
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Jun 4
ORD5:15 pmChicago O'Hare Intl
12h 40m
1 stop
SOF1:55 pmSofia
$690
Find similar
LOT
Nov 26
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Nov 29
ORD9:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$711
Find similar
LOT
Dec 22
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Apr 15
ORD9:50 pmChicago O'Hare Intl
12h 10m
1 stop
SOF6:00 pmSofia
$728
Find similar

KLM flights from Sofia to Chicago

Our best KLM deals on Sofia to Chicago flight tickets
KLM
Jan 15
SOF7:00 amSofia
18h 55m
2 stops
ORD5:55 pmChicago O'Hare Intl
Jan 28
ORD4:25 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:05 pmSofia
$681
Find similar
KLM
Jan 15
SOF7:00 amSofia
18h 55m
2 stops
ORD5:55 pmChicago O'Hare Intl
Jan 28
ORD4:25 pmChicago O'Hare Intl
13h 40m
1 stop
SOF2:05 pmSofia
$686
Find similar
KLM
Dec 17
SOF7:00 amSofia
15h 20m
1 stop
ORD2:20 pmChicago O'Hare Intl
Jan 17
ORD1:55 pmChicago O'Hare Intl
16h 10m
2 stops
SOF2:05 pmSofia
$689
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 November 24, 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

Thu 1/15

7:00 am-5:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Wed 1/28

4:25 pm-2:05 pm

1 stop13h 40m

$681

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/15

7:00 am-5:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Wed 1/28

1:58 pm-2:05 pm

2 stops16h 07m

$684

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 1/15

7:00 am-6:32 pm

2 stops19h 32m

Chicago Midway

Wed 1/28

1:49 pm-2:05 pm

2 stops16h 16m

$684

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/15

7:00 am-5:55 pm

2 stops18h 55m

Chicago O'Hare Intl

Wed 1/28

4:25 pm-2:05 pm

1 stop13h 40m

$686

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 12/18

7:10 am-3:10 pm

1 stop16h 00m

Chicago O'Hare Intl

Mon 1/12

5:20 pm-2:05 pm

1 stop12h 45m

$687

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/17

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Sat 1/17

1:55 pm-2:05 pm

2 stops16h 10m

$689

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 12/12

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Thu 6/4

5:15 pm-1:55 pm

1 stop12h 40m

$690

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 12/18

7:10 am-3:10 pm

1 stop16h 00m

Chicago O'Hare Intl

Tue 1/13

1:55 pm-1:55 pm

2 stops16h 00m

$691

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 12/15

6:05 am-1:10 pm

2 stops15h 05m

Chicago O'Hare Intl

Thu 1/22

4:20 pm-1:50 pm

1 stop13h 30m

$694

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/15

6:00 am-3:20 pm

1 stop17h 20m

Chicago O'Hare Intl

Wed 1/28

6:00 pm-1:15 pm

1 stop11h 15m

$695

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.

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 $718 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 $639 on momondo.

How have Sofia to Chicago flight prices changed over time?

As of November 2025, prices for Sofia to Chicago flights are approximately 94% 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

Direct flights

None
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 30m 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
1,139 reviews
Search LOT flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,535 reviews
Search British Airways flights
Air FrancePriceFrom $560Free CancellationRating
7.4
1,497 reviews
Search Air France flights
KLMPriceFrom $604Free CancellationRating
7.7
1,420 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,052 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $630Free CancellationRating
6.8
7,591 reviews
Search Lufthansa flights
United AirlinesPriceFrom $641Free CancellationRating
7.4
9,044 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $654Free CancellationRating
7.6
874 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
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