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

Istanbul (IST) was the most common stop: 41% 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 37m.

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

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

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: 11h 50m.

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

Flights via Zurich (ZRH) offer the lowest average round-trip price of $672.

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 April 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.

$330 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 $1,208 to $850. The lowest price recently found on this route was $690.

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Find the cheapest flights from Chicago to Sofia

Round-trip

One-way

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Cheap round-trip flights

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8:10 pm - 8:15 pm

ORD

SOF

16h 05m

1 stop

2:05 pm - 9:40 am

SOF

ORD

27h 35m

1 stop

$690Turkish Airlines

Τετ, Σεπ 9 - Κυρ, Σεπ 20

11:20 pm - 3:00 am

ORD

SOF

19h 40m

1 stop

4:00 pm - 9:15 pm

SOF

ORD

13h 15m

1 stop

$692Air Serbia

Σαβ, Αυγ 22 - Σαβ, Σεπ 5

11:25 am - 8:45 am

ORD

SOF

13h 20m

1 stop

3:50 pm - 6:15 pm

SOF

ORD

34h 25m

1 stop

$694Turkish Airlines

Δευ, Σεπ 7 - Σαβ, Οκτ 3

11:20 pm - 3:30 pm

ORD

SOF

32h 10m

1 stop

5:00 am - 9:15 pm

SOF

ORD

24h 15m

1 stop

$695Air Serbia

Σαβ, Αυγ 22 - Σαβ, Σεπ 5

11:20 pm - 3:30 pm

ORD

SOF

32h 10m

1 stop

5:00 am - 9:15 pm

SOF

ORD

24h 15m

1 stop

$696Air Serbia

Σαβ, Αυγ 22 - Σαβ, Σεπ 5

8:10 pm - 3:00 pm

ORD

SOF

34h 50m

1 stop

3:50 pm - 7:25 pm

SOF

ORD

35h 35m

1 stop

$698Turkish Airlines

Τρι, Σεπ 1 - Σαβ, Οκτ 24

8:10 pm - 3:00 pm

ORD

SOF

34h 50m

1 stop

9:05 pm - 9:40 am

SOF

ORD

20h 35m

1 stop

$709Turkish Airlines

Κυρ, Αυγ 23 - Δευ, Σεπ 7

8:10 pm - 3:00 pm

ORD

SOF

34h 50m

1 stop

3:50 pm - 9:40 am

SOF

ORD

25h 50m

1 stop

$717Turkish Airlines

Σαβ, Αυγ 1 - Τρι, Σεπ 8

1:16 pm - 2:00 pm

MDW

SOF

16h 44m

2 stops

7:00 am - 6:05 pm

SOF

MDW

19h 05m

2 stops

$847KLM

Τετ, Αυγ 5 - Τρι, Αυγ 25

1:16 pm - 2:00 pm

MDW

SOF

16h 44m

2 stops

7:00 am - 4:27 pm

SOF

MDW

17h 27m

2 stops

$853KLM

Τρι, Ιουλ 28 - Τρι, Αυγ 18

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KLM flights from Chicago to Sofia

Our best KLM deals on Chicago to Sofia flight tickets

KLM

Aug 5

MDW1:16 pmChicago Midway

16h 44m

2 stops

SOF2:00 pmSofia

Aug 25

SOF7:00 amSofia

19h 05m

2 stops

MDW6:05 pmChicago Midway

$847

KLM

Jul 28

MDW1:16 pmChicago Midway

16h 44m

2 stops

SOF2:00 pmSofia

Aug 18

SOF7:00 amSofia

17h 27m

2 stops

MDW4:27 pmChicago Midway

$853

KLM

Jul 28

MDW1:16 pmChicago Midway

16h 44m

2 stops

SOF2:00 pmSofia

Aug 18

SOF7:00 amSofia

17h 27m

2 stops

MDW4:27 pmChicago Midway

$878

Lufthansa flights from Chicago to Sofia

Our best Lufthansa deals on Chicago to Sofia flight tickets

Lufthansa

May 6

ORD9:40 pmChicago O'Hare Intl

13h 00m

1 stop

SOF6:40 pmSofia

May 12

SOF6:10 amSofia

14h 45m

1 stop

ORD12:55 pmChicago O'Hare Intl

$911

Lufthansa

May 7

ORD3:35 pmChicago O'Hare Intl

12h 35m

1 stop

SOF12:10 pmSofia

May 17

SOF6:20 amSofia

14h 35m

1 stop

ORD12:55 pmChicago O'Hare Intl

$948

Lufthansa

May 7

ORD9:40 pmChicago O'Hare Intl

13h 00m

1 stop

SOF6:40 pmSofia

May 20

SOF1:50 pmSofia

14h 05m

1 stop

ORD7:55 pmChicago O'Hare Intl

$949

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Τετ 9/9

8:10 pm-8:15 pm

1 stop16h 05m

Sofia

Κυρ 9/20

2:05 pm-9:40 am

1 stop27h 35m

$690

Quickest round-trip

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Σαβ 8/22

11:20 pm-3:00 am

1 stop19h 40m

Sofia

Σαβ 9/5

4:00 pm-9:15 pm

1 stop13h 15m

$692

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Δευ 9/7

11:25 am-8:45 am

1 stop13h 20m

Sofia

Σαβ 10/3

3:50 pm-6:15 pm

1 stop34h 25m

$694

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Σαβ 8/22

11:20 pm-3:30 pm

1 stop32h 10m

Sofia

Σαβ 9/5

5:00 am-9:15 pm

1 stop24h 15m

$695

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Σαβ 8/22

11:20 pm-3:30 pm

1 stop32h 10m

Sofia

Σαβ 9/5

5:00 am-9:15 pm

1 stop24h 15m

$696

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Τρι 9/1

8:10 pm-3:00 pm

1 stop34h 50m

Sofia

Σαβ 10/24

3:50 pm-7:25 pm

1 stop35h 35m

$698

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Κυρ 8/23

8:10 pm-3:00 pm

1 stop34h 50m

Sofia

Δευ 9/7

9:05 pm-9:40 am

1 stop20h 35m

$709

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Σαβ 8/1

8:10 pm-3:00 pm

1 stop34h 50m

Sofia

Τρι 9/8

3:50 pm-9:40 am

1 stop25h 50m

$717

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Τετ 8/5

1:16 pm-2:00 pm

2 stops16h 44m

Sofia

Τρι 8/25

7:00 am-6:05 pm

2 stops19h 05m

$847

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Τρι 7/28

1:16 pm-2:00 pm

2 stops16h 44m

Sofia

Τρι 8/18

7:00 am-4:27 pm

2 stops17h 27m

$853

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 October. Flight prices, which tend to average around $385, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Sofia from Chicago during November instead. Flights to Sofia in November, while not as cheap as those in October, still average around $429.

How far in advance should I book a flight from Chicago 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 $748 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 $715 on momondo.

Can stopping save me money on Chicago to Sofia flights?

You could potentially save up to 3% 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 April 2026, prices for Chicago to Sofia flights are approximately 15% 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 35m
Direct flights	None

The fastest flight from Chicago to Sofia takes 12h 35m

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

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Frequently asked questions about flying from Chicago to Sofia

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 35m.
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 April 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 Turkish Airlines, representing 28% of all bookings. The subsequent popular airlines are Lufthansa at 27%, United Airlines at 14%, and LOT 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
KLM	PriceFrom $425	Free Cancellation	Rating 7.8 1,510 reviews	Search KLM flights
ITA Airways	PriceFrom $508	Free Cancellation	Rating 6.7 1,198 reviews	Search ITA Airways flights
Turkish Airlines	PriceFrom $521	Free Cancellation	Rating 7.4 4,342 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $561	Free Cancellation	Rating 7.4 9,680 reviews	Search United Airlines flights
SWISS	PriceFrom $564	Free Cancellation	Rating 7.5 1,924 reviews	Search SWISS flights
Austrian Airlines	PriceFrom $575	Free Cancellation	Rating 7.6 913 reviews	Search Austrian Airlines flights
LOT	PriceFrom $581	Free Cancellation	Rating 7.5 1,192 reviews	Search LOT flights
Lufthansa	PriceFrom $582	Free Cancellation	Rating 6.8 7,960 reviews	Search Lufthansa flights
Air France	PriceFrom $585	Free Cancellation	Rating 7.4 1,580 reviews	Search Air France flights
British Airways	PriceFrom $609	Free Cancellation	Rating 6.7 7,931 reviews	Search British Airways flights

Bansko

Borovets

Velingrad

Sandanski

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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

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Cheap flights from Chicago to Sofia from $330

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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KLM flights from Chicago to Sofia

Our best KLM deals on Chicago to Sofia flight tickets

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Our best Lufthansa deals on Chicago to Sofia flight tickets

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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 from Chicago 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

Frequently asked questions about flying from Chicago to Sofia

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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Cabin classes currently available on flights to Sofia

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

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