What airlines fly to Sofia?

Turkish Airlines, Lufthansa and LOT are the top three most popular airlines that fly to Sofia from Chicago O'Hare Intl Airport according to our data. Turkish Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 12 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Chicago O'Hare Intl Airport to Sofia?

Flights via London (LHR) offer the lowest average round-trip price of $766.

Which airport is the most popular layover for flights between Chicago O'Hare Intl Airport and Sofia?

Istanbul (IST) was the most common stop: 37% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Chicago O'Hare Intl Airport to Sofia?

Zurich (ZRH) has the shortest average layover time for this route: 1h 34m.

Which layover airport has the shortest travel time from Chicago O'Hare Intl Airport to Sofia?

Flights connecting via Vienna (VIE) have the shortest average one-way travel time: 12h 15m.

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

Prices for flights from Chicago O'Hare Intl Airport to Sofia Airport refresh daily.

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

The number of operators available for flights from Chicago O'Hare Intl Airport to Sofia Airport is 12 as of May 2026.

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

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 Chicago O'Hare Intl Airport to Sofia Airport.

What documentation or ID do you need to fly to Sofia Airport?

The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$330 Cheap Flights from Chicago O'Hare Intl Airport to Sofia in 2026

Q: What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and Sofia?

Prices are currently low for flights on this route. Typical prices usually range from $1,149 to $759. The lowest price recently found on this route was $807.

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Find the cheapest flights from Chicago O'Hare Intl Airport to Sofia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:50 pm - 10:45 pm

ORD

SOF

16h 55m

1 stop

6:10 am - 2:55 pm

SOF

ORD

16h 45m

2 stops

$807Multiple Airlines

Fri, Oct 30 - Fri, Nov 13

8:10 pm - 1:15 pm

ORD

SOF

33h 05m

1 stop

9:05 pm - 9:40 am

SOF

ORD

20h 35m

1 stop

$810Turkish Airlines

Fri, Aug 14 - Sat, Sep 12

11:25 am - 8:45 am

ORD

SOF

13h 20m

1 stop

3:50 pm - 9:40 am

SOF

ORD

25h 50m

1 stop

$817Turkish Airlines

Fri, Aug 7 - Wed, Sep 9

2:20 pm - 10:20 am

ORD

SOF

12h 00m

1 stop

6:10 am - 2:55 pm

SOF

ORD

16h 45m

2 stops

$819Multiple Airlines

Wed, Jul 22 - Wed, Nov 18

2:20 pm - 10:20 am

ORD

SOF

12h 00m

1 stop

7:55 am - 2:00 pm

SOF

ORD

14h 05m

1 stop

$821Multiple Airlines

Wed, Jul 22 - Wed, Nov 18

4:20 pm - 6:10 pm

ORD

SOF

17h 50m

1 stop

11:05 am - 3:55 pm

SOF

ORD

12h 50m

1 stop

$822Multiple Airlines

Sat, Aug 1 - Wed, Aug 26

7:05 pm - 2:55 pm

ORD

SOF

11h 50m

1 stop

8:00 am - 1:20 pm

SOF

ORD

13h 20m

1 stop

$824Multiple Airlines

Sun, Aug 9 - Tue, Sep 1

11:05 am - 10:20 am

ORD

SOF

15h 15m

2 stops

6:10 am - 2:55 pm

SOF

ORD

16h 45m

2 stops

$825Multiple Airlines

Wed, Jul 22 - Wed, Nov 18

11:05 am - 1:05 pm

ORD

SOF

18h 00m

2 stops

11:05 am - 3:55 pm

SOF

ORD

12h 50m

1 stop

$826Multiple Airlines

Tue, Sep 1 - Thu, Sep 10

11:25 am - 3:00 pm

ORD

SOF

19h 35m

1 stop

9:05 pm - 9:40 am

SOF

ORD

20h 35m

1 stop

$827Turkish Airlines

Fri, Sep 11 - Sat, Sep 19

Lufthansa flights from Chicago O'Hare Intl Airport to Sofia

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Sofia flight tickets

Lufthansa

May 11

ORD3:35 pmChicago O'Hare Intl

12h 35m

1 stop

SOF12:10 pmSofia

May 25

SOF6:10 amSofia

14h 25m

1 stop

ORD12:35 pmChicago O'Hare Intl

$896

Lufthansa

May 14

ORD9:40 pmChicago O'Hare Intl

13h 00m

1 stop

SOF6:40 pmSofia

May 21

SOF2:10 pmSofia

13h 45m

1 stop

ORD7:55 pmChicago O'Hare Intl

$921

Lufthansa

May 15

ORD3:35 pmChicago O'Hare Intl

12h 35m

1 stop

SOF12:10 pmSofia

May 31

SOF7:25 pmSofia

25h 10m

1 stop

ORD12:35 pmChicago O'Hare Intl

$930

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

Our best United Airlines deals on Chicago O'Hare Intl Airport to Sofia flight tickets

United Airlines

Aug 14

ORD6:00 pmChicago O'Hare Intl

16h 40m

1 stop

SOF6:40 pmSofia

Aug 26

SOF6:10 amSofia

15h 50m

1 stop

ORD2:00 pmChicago O'Hare Intl

$832

United Airlines

Jul 29

ORD6:00 pmChicago O'Hare Intl

21h 15m

1 stop

SOF11:15 pmSofia

Oct 2

SOF6:20 amSofia

16h 35m

1 stop

ORD2:55 pmChicago O'Hare Intl

$837

United Airlines

Aug 11

ORD9:40 pmChicago O'Hare Intl

17h 35m

1 stop

SOF11:15 pmSofia

Aug 27

SOF6:10 amSofia

20h 05m

1 stop

ORD6:15 pmChicago O'Hare Intl

$838

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 10/30

10:50 pm-10:45 pm

1 stop16h 55m

Sofia

Fri 11/13

6:10 am-2:55 pm

2 stops16h 45m

$807

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 8/14

8:10 pm-1:15 pm

1 stop33h 05m

Sofia

Sat 9/12

9:05 pm-9:40 am

1 stop20h 35m

$810

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 8/7

11:25 am-8:45 am

1 stop13h 20m

Sofia

Wed 9/9

3:50 pm-9:40 am

1 stop25h 50m

$817

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 7/22

2:20 pm-10:20 am

1 stop12h 00m

Sofia

Wed 11/18

6:10 am-2:55 pm

2 stops16h 45m

$819

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 7/22

2:20 pm-10:20 am

1 stop12h 00m

Sofia

Wed 11/18

7:55 am-2:00 pm

1 stop14h 05m

$821

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 8/1

4:20 pm-6:10 pm

1 stop17h 50m

Sofia

Wed 8/26

11:05 am-3:55 pm

1 stop12h 50m

$822

Quickest round-trip

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 8/9

7:05 pm-2:55 pm

1 stop11h 50m

Sofia

Tue 9/1

8:00 am-1:20 pm

1 stop13h 20m

$824

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 7/22

11:05 am-10:20 am

2 stops15h 15m

Sofia

Wed 11/18

6:10 am-2:55 pm

2 stops16h 45m

$825

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 9/1

11:05 am-1:05 pm

2 stops18h 00m

Sofia

Thu 9/10

11:05 am-3:55 pm

1 stop12h 50m

$826

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 9/11

11:25 am-3:00 pm

1 stop19h 35m

Sofia

Sat 9/19

9:05 pm-9:40 am

1 stop20h 35m

$827

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Sofia

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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and Sofia?

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Chicago O'Hare Intl Airport is in February. Flight prices, which tend to average around $586, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Sofia from Chicago O'Hare Intl Airport during January instead. Flights to Sofia in January, while not as cheap as those in February, still average around $619.

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

You are more likely to see cheaper flights to Sofia from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $750 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Chicago O'Hare Intl Airport for as low as $739 on momondo.

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

As of May 2026, prices for Chicago O'Hare Intl Airport to Sofia flights are approximately 14% cheaper when compared to flights at the same time last year.

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

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

Estimated round-trip price

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

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

Fastest flight time	13h 00m
Direct flights	None

The fastest flight from Chicago O'Hare Intl Airport to Sofia takes 13h 00m

There are no direct flights from Chicago O'Hare Intl Airport to Sofia. There are no popular flight routes from Chicago O'Hare Intl Airport to Sofia.

Search flight deals

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Sofia

How far is Chicago O'Hare Intl to Sofia by plane?
Chicago O'Hare Intl and Sofia are 5191.0 mi apart from one another. In terms of flight time, this usually takes a little over 13h 00m.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Sofia Airport?
Prices for flights from Chicago O'Hare Intl Airport to Sofia Airport refresh daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Sofia Airport?
The number of operators available for flights from Chicago O'Hare Intl Airport to Sofia Airport is 12 as of May 2026.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Sofia Airport?
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 Chicago O'Hare Intl Airport to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Chicago O'Hare Intl Airport to Sofia?
momondo data reveals that the most frequently booked airline on the route from Chicago O'Hare Intl Airport to Sofia is Turkish Airlines, representing 27% of all bookings. The subsequent popular airlines are Lufthansa at 27%, LOT at 17%, and United Airlines at 12%.

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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Sofia with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $425	Free Cancellation	Rating 7.8 1,511 reviews	Search KLM flights
ITA Airways	PriceFrom $508	Free Cancellation	Rating 6.7 1,202 reviews	Search ITA Airways flights
Turkish Airlines	PriceFrom $521	Free Cancellation	Rating 7.4 4,348 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $561	Free Cancellation	Rating 7.4 9,683 reviews	Search United Airlines flights
SWISS	PriceFrom $564	Free Cancellation	Rating 7.6 1,936 reviews	Search SWISS flights
Lufthansa	PriceFrom $580	Free Cancellation	Rating 6.8 7,972 reviews	Search Lufthansa flights
LOT	PriceFrom $580	Free Cancellation	Rating 7.5 1,193 reviews	Search LOT flights
Air France	PriceFrom $585	Free Cancellation	Rating 7.4 1,585 reviews	Search Air France flights
Austrian Airlines	PriceFrom $587	Free Cancellation	Rating 7.6 914 reviews	Search Austrian Airlines flights
British Airways	PriceFrom $609	Free Cancellation	Rating 6.7 7,945 reviews	Search British Airways flights

Bansko

Borovets

Velingrad

Sandanski

Why use momondo?

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

It is quick and easy to find Chicago to Sofia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sofia that suits you.

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

momondo does allow users to show only those flights to Sofia from Chicago which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Chicago to Sofia 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 Chicago to Sofia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Sofia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Lufthansa flights from Chicago O'Hare Intl Airport to Sofia

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

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See travel insights to Sofia from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Sofia

What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and Sofia?

What is the cheapest month to fly to Sofia?

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

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

What airlines fly to Sofia?

Which airport is the most popular layover for flights between Chicago O'Hare Intl Airport and Sofia?

Which layover airport offers the lowest fares from Chicago O'Hare Intl Airport to Sofia?

Which layover airport has the shortest travel time from Chicago O'Hare Intl Airport to Sofia?

Which layover airport has the shortest connection time from Chicago O'Hare Intl Airport to Sofia?

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

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Chicago O'Hare Intl Airport to Sofia

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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Sofia with momondo

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Why use momondo?

An easier way to manage your Sofia trip

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Get notified when prices go down

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Fly your favorite airline to Sofia

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