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Cheap flights from Sofia to Chicago from $478

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 1/15. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
LOT Logo
6:35 pm - 8:00 pmSOF-ORD
33h 25m1 stop
LOT Logo
9:55 pm - 5:50 pmORD-SOF
35h 55m2 stops
$676LOT
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Mon, Dec 22 - Sun, Jan 18
Air Canada Logo
6:05 am - 5:48 pmSOF-ORD
19h 43m2 stops
Air Canada Logo
10:35 am - 6:20 pmORD-SOF
23h 45m2 stops
$679Air Canada
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Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
4:45 pm - 10:42 pmSOF-ORD
37h 57m3 stops
Multiple Airlines Logo
6:30 pm - 11:35 pmORD-SOF
21h 05m3 stops
$682Multiple Airlines
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Thu, Jan 15 - Sat, Jan 31
Multiple Airlines Logo
2:35 pm - 9:13 amSOF-ORD
26h 38m2 stops
Multiple Airlines Logo
6:50 pm - 6:20 pmORD-SOF
15h 30m2 stops
$684Multiple Airlines
Find Deal
Thu, Jan 15 - Sat, Jan 31
Air France Logo
7:00 am - 3:10 pmSOF-ORD
16h 10m1 stop
Air France Logo
5:20 pm - 1:55 pmORD-SOF
12h 35m1 stop
$689Air France
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Sun, Dec 14 - Thu, Jan 22
Air France Logo
7:00 am - 3:10 pmSOF-ORD
16h 10m1 stop
Air France Logo
11:25 am - 1:55 pmORD-SOF
18h 30m2 stops
$693Air France
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Wed, Dec 17 - Sat, Jan 17
Multiple Airlines Logo
7:00 am - 3:10 pmSOF-ORD
16h 10m1 stop
Multiple Airlines Logo
4:25 pm - 2:05 pmORD-SOF
13h 40m1 stop
$694Multiple Airlines
Find Deal
Wed, Dec 17 - Sat, Jan 17
Multiple Airlines Logo
7:00 am - 3:10 pmSOF-ORD
16h 10m1 stop
Multiple Airlines Logo
12:30 pm - 2:05 pmORD-SOF
17h 35m2 stops
$699Multiple Airlines
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Wed, Dec 17 - Sat, Jan 17
British Airways Logo
9:00 pm - 3:49 pmSOF-ORD
50h 49m2 stops
British Airways Logo
7:49 pm - 8:10 pmORD-SOF
40h 21m2 stops
$703British Airways
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Wed, Dec 24 - Mon, Jan 19
LOT Logo
6:35 pm - 8:00 pmSOF-ORD
33h 25m1 stop
LOT Logo
5:15 pm - 1:55 pmORD-SOF
12h 40m1 stop
$708LOT
Find Deal
Tue, Jan 13 - Sat, May 16

LOT flights from Sofia to Chicago O'Hare Intl Airport

Our best LOT deals on Sofia to Chicago O'Hare Intl Airport flight tickets
LOT
Dec 22
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
Jan 18
ORD9:55 pmChicago O'Hare Intl
35h 55m
2 stops
SOF5:50 pmSofia
$676
Find similar
LOT
Jan 13
SOF6:35 pmSofia
33h 25m
1 stop
ORD8:00 pmChicago O'Hare Intl
May 16
ORD5:15 pmChicago O'Hare Intl
12h 40m
1 stop
SOF1:55 pmSofia
$708
Find similar
LOT
Dec 21
SOF6:35 pmSofia
33h 20m
2 stops
ORD7:55 pmChicago O'Hare Intl
Jan 19
ORD9:55 pmChicago O'Hare Intl
31h 55m
1 stop
SOF1:50 pmSofia
$720
Find similar

Air Canada flights from Sofia to Chicago O'Hare Intl Airport

Our best Air Canada deals on Sofia to Chicago O'Hare Intl Airport flight tickets
Air Canada
Jan 15
SOF6:05 amSofia
19h 43m
2 stops
ORD5:48 pmChicago O'Hare Intl
Jan 28
ORD10:35 amChicago O'Hare Intl
23h 45m
2 stops
SOF6:20 pmSofia
$679
Find similar
Air Canada
Dec 12
SOF6:10 amSofia
16h 45m
2 stops
ORD2:55 pmChicago O'Hare Intl
Jun 6
ORD8:40 amChicago O'Hare Intl
20h 30m
2 stops
SOF1:10 pmSofia
$844
Find similar
Air Canada
Dec 14
SOF2:00 pmSofia
26h 00m
2 stops
ORD8:00 amChicago O'Hare Intl
Dec 29
ORD3:35 pmChicago O'Hare Intl
13h 40m
2 stops
SOF1:15 pmSofia
$3,065
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Sofia to Chicago O'Hare Intl Airport 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 1, 2025.
Use the filters below to find and compare flights from Sofia to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 12/22

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Sun 1/18

9:55 pm-5:50 pm

2 stops35h 55m

$676

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/15

6:05 am-5:48 pm

2 stops19h 43m

Chicago O'Hare Intl

Wed 1/28

10:35 am-6:20 pm

2 stops23h 45m

$679

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/15

4:45 pm-10:42 pm

3 stops37h 57m

Chicago O'Hare Intl

Sat 1/31

6:30 pm-11:35 pm

3 stops21h 05m

$682

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/15

2:35 pm-9:13 am

2 stops26h 38m

Chicago O'Hare Intl

Sat 1/31

6:50 pm-6:20 pm

2 stops15h 30m

$684

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 12/14

7:00 am-3:10 pm

1 stop16h 10m

Chicago O'Hare Intl

Thu 1/22

5:20 pm-1:55 pm

1 stop12h 35m

$689

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/17

7:00 am-3:10 pm

1 stop16h 10m

Chicago O'Hare Intl

Sat 1/17

11:25 am-1:55 pm

2 stops18h 30m

$693

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/17

7:00 am-3:10 pm

1 stop16h 10m

Chicago O'Hare Intl

Sat 1/17

4:25 pm-2:05 pm

1 stop13h 40m

$694

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/17

7:00 am-3:10 pm

1 stop16h 10m

Chicago O'Hare Intl

Sat 1/17

12:30 pm-2:05 pm

2 stops17h 35m

$699

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/24

9:00 pm-3:49 pm

2 stops50h 49m

Chicago O'Hare Intl

Mon 1/19

7:49 pm-8:10 pm

2 stops40h 21m

$703

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 1/13

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Sat 5/16

5:15 pm-1:55 pm

1 stop12h 40m

$708

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 O'Hare Intl Airport

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 O'Hare Intl Airport?

The month of March is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Sofia averaging around $676.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Wednesday when prices can be found for as low as $685. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Sofia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $778.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Sofia at noon is the least expensive time of day to depart. momondo users have found prices as low as $657 when looking at flights departing at noon. Try not to purchase tickets in the morning because they tend to be around $779. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Sofia when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $719 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Sofia for as low as $639 on momondo.

How have Sofia to Chicago O'Hare Intl Airport flight prices changed over time?

As of December 2025, prices for Sofia to Chicago O'Hare Intl Airport flights are approximately 30% cheaper when compared to flights at the same time last year.

When to book flights from Sofia to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Sofia to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sofia to Chicago O'Hare Intl Airport (SOF to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sofia to Chicago O'Hare Intl Airport

Fastest flight time

15h 20m

Direct flights

None
The fastest flight from Sofia to Chicago O'Hare Intl Airport takes 15h 20m
There are no direct flights from Sofia to Chicago O'Hare Intl Airport. There are no popular flight routes from Sofia to Chicago O'Hare Intl Airport.
Search flight deals

  • How far is Sofia to Chicago O'Hare Intl by plane?

    The distance between Sofia and Chicago O'Hare Intl is about 5191.0 mi. 13h 30m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Sofia Airport to Chicago O'Hare Intl Airport?

    Prices for flights from Sofia Airport to Chicago O'Hare Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Sofia Airport to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Sofia Airport to Chicago O'Hare Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The necessary travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sofia to Chicago O'Hare Intl Airport?

Best airlines flying from Sofia to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Sofia to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
LOTPriceFrom $532Free CancellationRating
7.5
1,141 reviews
Search LOT flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,549 reviews
Search British Airways flights
Air FrancePriceFrom $560Free CancellationRating
7.4
1,500 reviews
Search Air France flights
KLMPriceFrom $607Free CancellationRating
7.7
1,425 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,071 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $638Free CancellationRating
6.8
7,602 reviews
Search Lufthansa flights
United AirlinesPriceFrom $643Free CancellationRating
7.4
9,065 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $654Free CancellationRating
7.6
875 reviews
Search Austrian Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
South Haven
Schaumburg
Rockford
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Orland Park
Racine
Hammond
Tinley Park
Janesville
Aurora
Elgin
Benton Harbor

Why use momondo?

Why should I use momondo to find a flight deal from Sofia to Chicago?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Sofia to Chicago. momondo saves you time and could save you money on your trip.

Can I find flights from Sofia to Chicago with flexible booking policies on momondo?

Flights from Sofia to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Sofia to Chicago?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sofia to Chicago.

I’m not ready to book a flight from Sofia to Chicago right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Chicago from Sofia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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