Which layover airport has the shortest travel time from Chicago to Sofia?

Flights connecting via Vienna (VIE) have the shortest average one-way travel time: 12h 09m.

Which layover airport offers the lowest fares from Chicago to Sofia?

Flights via Paris (CDG) offer the lowest average round-trip price of $566.

Which airport is the most popular layover for flights between Chicago and Sofia?

Istanbul (IST) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Chicago to Sofia?

Warsaw (WAW) has the shortest average layover time for this route: 1h 36m.

What airlines fly to Sofia?

Lufthansa, Turkish Airlines and LOT are the top three most popular airlines that fly to Sofia from Chicago according to our data. Lufthansa is the first choice among our users, with 32% 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.

What is the cheapest airline that flies from Chicago to Sofia?

British Airways is the most popular carrier operating from Chicago to Sofia

When did momondo last update prices for flights from Chicago to Sofia Airport?

Prices for flights from Chicago to Sofia Airport were last updated today.

How many operators does momondo search for flights from Chicago to Sofia Airport?

As of March 2026, there are 12 operators available to choose from for flights from Chicago to Sofia Airport.

How old do you have to be to fly from Chicago to Sofia Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago 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.

$304 Cheap Flights from Chicago to Sofia in 2026

Q: What is the typical price of a round-trip flight between Chicago and Sofia?

Prices are currently low for flights on this route. Typical prices usually range from $795 to $599. The lowest price recently found on this route was $588.

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Find the cheapest flights from Chicago to Sofia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:10 pm - 3:00 pm

ORD

SOF

34h 50m

1 stop

9:35 am - 9:40 am

SOF

ORD

32h 05m

1 stop

$588Turkish Airlines

Sun, Apr 19 - Tue, May 5

8:10 pm - 8:15 pm

ORD

SOF

16h 05m

1 stop

3:50 pm - 9:40 am

SOF

ORD

25h 50m

1 stop

$589Turkish Airlines

Mon, Apr 27 - Mon, May 11

8:10 pm - 8:15 pm

ORD

SOF

16h 05m

1 stop

9:05 pm - 9:40 am

SOF

ORD

20h 35m

1 stop

$592Turkish Airlines

Tue, Apr 28 - Tue, Sep 29

8:10 pm - 3:00 pm

ORD

SOF

34h 50m

1 stop

9:35 am - 9:40 am

SOF

ORD

32h 05m

1 stop

$593Turkish Airlines

Sun, Apr 19 - Tue, May 5

11:25 am - 2:30 pm

ORD

SOF

19h 05m

1 stop

9:05 pm - 9:40 am

SOF

ORD

20h 35m

1 stop

$598Turkish Airlines

Sun, Apr 12 - Mon, Apr 20

11:25 am - 3:00 pm

ORD

SOF

19h 35m

1 stop

9:35 am - 6:15 pm

SOF

ORD

16h 40m

1 stop

$602Turkish Airlines

Fri, Apr 24 - Fri, May 8

1:24 pm - 2:00 pm

MDW

SOF

16h 36m

2 stops

7:00 am - 5:56 pm

SOF

MDW

18h 56m

2 stops

$852KLM

Sun, May 3 - Fri, May 22

1:24 pm - 2:00 pm

MDW

SOF

16h 36m

2 stops

7:00 am - 5:56 pm

SOF

MDW

18h 56m

2 stops

$902KLM

Sat, May 2 - Fri, May 22

12:52 pm - 2:00 pm

MDW

SOF

17h 08m

2 stops

7:00 am - 4:27 pm

SOF

MDW

17h 27m

2 stops

$916Multiple Airlines

Mon, Apr 27 - Tue, Sep 29

1:24 pm - 2:00 pm

MDW

SOF

16h 36m

2 stops

7:00 am - 4:27 pm

SOF

MDW

17h 27m

2 stops

$921KLM

Sun, May 3 - Wed, Sep 30

KLM flights from Chicago to Sofia

Our best KLM deals on Chicago to Sofia flight tickets

KLM

May 3

MDW1:24 pmChicago Midway

16h 36m

2 stops

SOF2:00 pmSofia

May 22

SOF7:00 amSofia

18h 56m

2 stops

MDW5:56 pmChicago Midway

$852

KLM

Apr 28

MDW1:24 pmChicago Midway

16h 36m

2 stops

SOF2:00 pmSofia

Sep 7

SOF7:00 amSofia

17h 27m

2 stops

MDW4:27 pmChicago Midway

$877

KLM

May 2

MDW1:24 pmChicago Midway

16h 36m

2 stops

SOF2:00 pmSofia

May 22

SOF7:00 amSofia

18h 56m

2 stops

MDW5:56 pmChicago Midway

$902

Turkish Airlines flights from Chicago to Sofia

Our best Turkish Airlines deals on Chicago to Sofia flight tickets

Turkish Airlines

Apr 19

ORD8:10 pmChicago O'Hare Intl

34h 50m

1 stop

SOF3:00 pmSofia

May 5

SOF9:35 amSofia

32h 05m

1 stop

ORD9:40 amChicago O'Hare Intl

$588

Turkish Airlines

Apr 27

ORD8:10 pmChicago O'Hare Intl

16h 05m

1 stop

SOF8:15 pmSofia

May 11

SOF3:50 pmSofia

25h 50m

1 stop

ORD9:40 amChicago O'Hare Intl

$589

Turkish Airlines

Sep 6

ORD8:10 pmChicago O'Hare Intl

16h 05m

1 stop

SOF8:15 pmSofia

Sep 22

SOF3:50 pmSofia

25h 50m

1 stop

ORD9:40 amChicago O'Hare Intl

$591

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 4/19

8:10 pm-3:00 pm

1 stop34h 50m

Sofia

Tue 5/5

9:35 am-9:40 am

1 stop32h 05m

$588

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 4/27

8:10 pm-8:15 pm

1 stop16h 05m

Sofia

Mon 5/11

3:50 pm-9:40 am

1 stop25h 50m

$589

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 4/28

8:10 pm-8:15 pm

1 stop16h 05m

Sofia

Tue 9/29

9:05 pm-9:40 am

1 stop20h 35m

$592

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 4/19

8:10 pm-3:00 pm

1 stop34h 50m

Sofia

Tue 5/5

9:35 am-9:40 am

1 stop32h 05m

$593

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 4/12

11:25 am-2:30 pm

1 stop19h 05m

Sofia

Mon 4/20

9:05 pm-9:40 am

1 stop20h 35m

$598

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 4/24

11:25 am-3:00 pm

1 stop19h 35m

Sofia

Fri 5/8

9:35 am-6:15 pm

1 stop16h 40m

$602

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Sun 5/3

1:24 pm-2:00 pm

2 stops16h 36m

Sofia

Fri 5/22

7:00 am-5:56 pm

2 stops18h 56m

$852

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Sat 5/2

1:24 pm-2:00 pm

2 stops16h 36m

Sofia

Fri 5/22

7:00 am-5:56 pm

2 stops18h 56m

$902

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Mon 4/27

12:52 pm-2:00 pm

2 stops17h 08m

Sofia

Tue 9/29

7:00 am-4:27 pm

2 stops17h 27m

$916

Quickest round-trip

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Sun 5/3

1:24 pm-2:00 pm

2 stops16h 36m

Sofia

Wed 9/30

7:00 am-4:27 pm

2 stops17h 27m

$921

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 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 and Sofia?

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Chicago is in February. Flight prices, which tend to average around $575, 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 during November instead. Flights to Sofia in November, while not as cheap as those in February, still average around $617.

How far in advance should I book a flight to Sofia?

You are more likely to see cheaper flights to Sofia from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $732 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Chicago for as low as $691 on momondo.

Can stopping save me money on Chicago to Sofia flights?

You could potentially save up to 18% on your flight if you consider stops on a Chicago to Sofia flight.

How have Chicago to Sofia flight prices changed over time?

As of March 2026, prices for Chicago to Sofia flights are approximately 1% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to Sofia

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

Estimated round-trip price

Cheap Chicago to Sofia (CHI to SOF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Sofia

Fastest flight time	12h 25m
Direct flights	None

The fastest flight from Chicago to Sofia takes 12h 25m

There are no direct flights from Chicago to Sofia. There are no popular flight routes from Chicago to Sofia.

Search flight deals

How far is Chicago to Sofia by plane?
A flight from Chicago to Sofia will travel around 5185.9 mi. A reasonable flight in good conditions will take 12h 25m.
When did momondo last update prices for flights from Chicago to Sofia Airport?
Prices for flights from Chicago to Sofia Airport were last updated today.
How many operators does momondo search for flights from Chicago to Sofia Airport?
As of March 2026, there are 12 operators available to choose from for flights from Chicago to Sofia Airport.
How old do you have to be to fly from Chicago to Sofia Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago 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 to Sofia?
momondo data reveals that the most frequently booked airline on the route from Chicago to Sofia is Lufthansa, representing 28% of all bookings. The subsequent popular airlines are Turkish Airlines at 26%, LOT at 17%, and United Airlines at 14%.

Best airlines flying from Chicago to Sofia

Compare and see reviews for airlines that fly from Chicago to Sofia with momondo

Airline	Rating	Free Cancellation	Price
ITA Airways	PriceFrom $469	Free Cancellation	Rating 6.7 1,174 reviews	Search ITA Airways flights
Turkish Airlines	PriceFrom $521	Free Cancellation	Rating 7.4 4,288 reviews	Search Turkish Airlines flights
KLM	PriceFrom $533	Free Cancellation	Rating 7.8 1,477 reviews	Search KLM flights
United Airlines	PriceFrom $563	Free Cancellation	Rating 7.4 9,499 reviews	Search United Airlines flights
SWISS	PriceFrom $565	Free Cancellation	Rating 7.5 1,906 reviews	Search SWISS flights
Austrian Airlines	PriceFrom $575	Free Cancellation	Rating 7.6 903 reviews	Search Austrian Airlines flights
Lufthansa	PriceFrom $580	Free Cancellation	Rating 6.8 7,872 reviews	Search Lufthansa flights
LOT	PriceFrom $585	Free Cancellation	Rating 7.5 1,179 reviews	Search LOT flights
Air France	PriceFrom $585	Free Cancellation	Rating 7.4 1,555 reviews	Search Air France flights
British Airways	PriceFrom $609	Free Cancellation	Rating 6.7 7,825 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?

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

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?

momondo helps you find the best flight between Chicago and Sofia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Sofia, momondo offers a useful price alert feature which will track prices for flights to Sofia from Chicago and alert you when they change.

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Chicago to Sofia from $304

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Sofia departing on 8/19. 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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How to get the cheapest flight ticket from Chicago to Sofia

What is the typical price of a round-trip flight between Chicago and Sofia?

What is the cheapest month to fly to Sofia?

How far in advance should I book a flight to Sofia?

Can stopping save me money on Chicago to Sofia flights?

How have Chicago to Sofia flight prices changed over time?

What is the cheapest airline that flies from Chicago to Sofia?

What airlines fly to Sofia?

Which airport is the most popular layover for flights between Chicago and Sofia?

Which layover airport offers the lowest fares from Chicago to Sofia?

Which layover airport has the shortest travel time from Chicago to Sofia?

Which layover airport has the shortest connection time from Chicago to Sofia?

When to book flights from Chicago to Sofia

Cheap Chicago to Sofia (CHI to SOF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Sofia

Fastest flight time

Direct flights

Best airlines flying from Chicago to Sofia

Compare and see reviews for airlines that fly from Chicago to Sofia with momondo

Traveling to a place near Sofia?

Why use momondo?

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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List of cabin classes available on flights landing in Sofia. Availability may vary depending on flight origin and airline.

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