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Cheap flights from Sofia to Chicago from $337

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 11/13. 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.
Multiple Airlines Logo
3:15 pm - 3:25 pmSOF-ORD
32h 10m2 stops
Multiple Airlines Logo
2:31 pm - 11:35 pmORD-SOF
25h 04m3 stops
$641Multiple Airlines
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Thu, Nov 13 - Sat, Nov 15
LOT Logo
6:35 pm - 8:00 pmSOF-ORD
33h 25m1 stop
LOT Logo
9:40 pm - 1:50 pmORD-SOF
56h 10m2 stops
$645LOT
Find Deal
Mon, Dec 22 - Thu, Apr 16
Turkish Airlines Logo
4:00 pm - 6:25 pmSOF-ORD
34h 25m1 stop
Turkish Airlines Logo
8:20 pm - 3:10 pmORD-SOF
34h 50m1 stop
$648Turkish Airlines
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Wed, Dec 17 - Sat, Jan 17
Turkish Airlines Logo
9:35 am - 10:05 amSOF-ORD
32h 30m1 stop
Turkish Airlines Logo
11:50 am - 3:10 pmORD-SOF
19h 20m1 stop
$651Turkish Airlines
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Tue, Nov 11 - Tue, Nov 18
Lufthansa Logo
6:10 am - 6:19 pmSOF-ORD
19h 09m2 stops
Lufthansa Logo
6:00 pm - 1:15 pmORD-SOF
11h 15m1 stop
$696Lufthansa
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Fri, Oct 31 - Sat, Nov 8
British Airways Logo
2:30 pm - 6:45 pmSOF-ORD
36h 15m1 stop
British Airways Logo
4:55 pm - 7:10 pmORD-SOF
18h 15m1 stop
$699British Airways
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Sun, Dec 14 - Sun, Jun 7
British Airways Logo
2:30 pm - 1:50 pmSOF-ORD
31h 20m1 stop
British Airways Logo
7:10 pm - 8:20 pmORD-SOF
17h 10m1 stop
$700British Airways
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Sun, Dec 14 - Sat, Jun 6
Lufthansa Logo
5:05 am - 8:05 pmSOF-ORD
22h 00m2 stops
Lufthansa Logo
9:50 pm - 6:20 pmORD-SOF
12h 30m1 stop
$709Lufthansa
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Sun, Nov 2 - Sun, Nov 16
United Airlines Logo
2:35 pm - 9:05 pmSOF-ORD
13h 30m1 stop
United Airlines Logo
9:50 pm - 6:20 pmORD-SOF
12h 30m1 stop
$719United Airlines
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Fri, Oct 31 - Mon, Nov 10
United Airlines Logo
6:00 am - 4:20 pmSOF-ORD
17h 20m1 stop
United Airlines Logo
6:00 pm - 1:15 pmORD-SOF
11h 15m1 stop
$720United Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 10

United Airlines flights from Sofia to Chicago O'Hare Intl Airport

Our best United Airlines deals on Sofia to Chicago O'Hare Intl Airport flight tickets
United Airlines
Oct 31
SOF2:35 pmSofia
13h 30m
1 stop
ORD9:05 pmChicago O'Hare Intl
Nov 10
ORD9:50 pmChicago O'Hare Intl
12h 30m
1 stop
SOF6:20 pmSofia
$719
Find similar
United Airlines
Oct 30
SOF6:00 amSofia
17h 20m
1 stop
ORD4:20 pmChicago O'Hare Intl
Nov 10
ORD6:00 pmChicago O'Hare Intl
11h 15m
1 stop
SOF1:15 pmSofia
$720
Find similar
United Airlines
Dec 22
SOF2:20 pmSofia
13h 45m
1 stop
ORD8:05 pmChicago O'Hare Intl
Apr 14
ORD9:40 pmChicago O'Hare Intl
13h 00m
1 stop
SOF6:40 pmSofia
$721
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Air France flights from Sofia to Chicago O'Hare Intl Airport

Our best Air France deals on Sofia to Chicago O'Hare Intl Airport flight tickets
Air France
Oct 30
SOF7:10 amSofia
16h 00m
1 stop
ORD4:10 pmChicago O'Hare Intl
Nov 9
ORD5:20 pmChicago O'Hare Intl
12h 35m
1 stop
SOF1:55 pmSofia
$703
Find similar
Air France
Oct 30
SOF7:10 amSofia
16h 00m
1 stop
ORD4:10 pmChicago O'Hare Intl
Nov 7
ORD5:20 pmChicago O'Hare Intl
12h 35m
1 stop
SOF1:55 pmSofia
$704
Find similar
Air France
Oct 30
SOF7:10 amSofia
16h 00m
1 stop
ORD4:10 pmChicago O'Hare Intl
Nov 7
ORD1:25 pmChicago O'Hare Intl
16h 30m
2 stops
SOF1:55 pmSofia
$707
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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 October 14, 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

Thu 11/13

3:15 pm-3:25 pm

2 stops32h 10m

Chicago O'Hare Intl

Sat 11/15

2:31 pm-11:35 pm

3 stops25h 04m

$641

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 12/22

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Thu 4/16

9:40 pm-1:50 pm

2 stops56h 10m

$645

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/17

4:00 pm-6:25 pm

1 stop34h 25m

Chicago O'Hare Intl

Sat 1/17

8:20 pm-3:10 pm

1 stop34h 50m

$648

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 11/11

9:35 am-10:05 am

1 stop32h 30m

Chicago O'Hare Intl

Tue 11/18

11:50 am-3:10 pm

1 stop19h 20m

$651

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 10/31

6:10 am-6:19 pm

2 stops19h 09m

Chicago O'Hare Intl

Sat 11/8

6:00 pm-1:15 pm

1 stop11h 15m

$696

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 12/14

2:30 pm-6:45 pm

1 stop36h 15m

Chicago O'Hare Intl

Sun 6/7

4:55 pm-7:10 pm

1 stop18h 15m

$699

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 12/14

2:30 pm-1:50 pm

1 stop31h 20m

Chicago O'Hare Intl

Sat 6/6

7:10 pm-8:20 pm

1 stop17h 10m

$700

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 11/2

5:05 am-8:05 pm

2 stops22h 00m

Chicago O'Hare Intl

Sun 11/16

9:50 pm-6:20 pm

1 stop12h 30m

$709

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 10/31

2:35 pm-9:05 pm

1 stop13h 30m

Chicago O'Hare Intl

Mon 11/10

9:50 pm-6:20 pm

1 stop12h 30m

$719

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 10/30

6:00 am-4:20 pm

1 stop17h 20m

Chicago O'Hare Intl

Mon 11/10

6:00 pm-1:15 pm

1 stop11h 15m

$720

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 February is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Sofia averaging around $670.

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 $714 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 October 2025, prices for Sofia to Chicago O'Hare Intl Airport flights are approximately 4% more expensive 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

Direct flights

None
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.
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  • 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 10m 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
7.6
1,130 reviews
Search LOT flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,454 reviews
Search British Airways flights
KLMPriceFrom $604Free CancellationRating
7.7
1,402 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,009 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $628Free CancellationRating
6.8
7,487 reviews
Search Lufthansa flights
United AirlinesPriceFrom $642Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $654Free CancellationRating
7.6
853 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
Racine
Orland Park
Hammond
Tinley Park
Janesville
Elgin
Aurora
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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