Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Sofia to Chicago from $324

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 4/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Sofia to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
LOT Logo
2:35 pm - 7:50 pm
SOF
-
ORD
13h 15m
1 stop
LOT Logo
9:50 pm - 2:00 am
ORD
-
SOF
20h 10m
1 stop
$653LOT
Sat, Apr 11 - Sat, Apr 25
LOT Logo
2:35 pm - 9:00 pm
SOF
-
ORD
13h 25m
1 stop
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m
1 stop
$662LOT
Thu, Mar 19 - Sat, Apr 4
LOT Logo
5:30 am - 3:10 pm
SOF
-
ORD
17h 40m
1 stop
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m
1 stop
$667LOT
Thu, Jun 25 - Mon, Jul 20
LOT Logo
2:35 pm - 9:00 pm
SOF
-
ORD
13h 25m
1 stop
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m
1 stop
$671LOT
Thu, Mar 19 - Sat, Apr 4
LOT Logo
2:35 pm - 3:10 pm
SOF
-
ORD
32h 35m
1 stop
LOT Logo
5:10 pm - 6:00 pm
ORD
-
SOF
16h 50m
2 stops
$672LOT
Wed, May 20 - Fri, Aug 21
LOT Logo
2:35 pm - 7:50 pm
SOF
-
ORD
37h 15m
2 stops
LOT Logo
9:50 pm - 1:50 pm
ORD
-
SOF
32h 00m
1 stop
$674LOT
Thu, Apr 2 - Fri, Jul 31
KLM Logo
7:00 am - 5:54 pm
SOF
-
MDW
17h 54m
2 stops
KLM Logo
1:10 pm - 2:00 pm
MDW
-
SOF
16h 50m
2 stops
$758KLM
Thu, Mar 19 - Sat, Apr 4
KLM Logo
7:00 am - 5:54 pm
SOF
-
MDW
17h 54m
2 stops
KLM Logo
1:10 pm - 2:00 pm
MDW
-
SOF
16h 50m
2 stops
$759KLM
Thu, Mar 19 - Sat, Apr 4
KLM Logo
7:00 am - 5:54 pm
SOF
-
MDW
17h 54m
2 stops
KLM Logo
1:10 pm - 2:00 pm
MDW
-
SOF
16h 50m
2 stops
$819KLM
Wed, Mar 25 - Wed, Apr 1
Multiple Airlines Logo
7:00 am - 5:56 pm
SOF
-
MDW
18h 56m
2 stops
Multiple Airlines Logo
1:59 pm - 2:00 pm
MDW
-
SOF
16h 01m
2 stops
$992Multiple Airlines
Thu, May 14 - Mon, May 25

United Airlines flights from Sofia to Chicago

Our best United Airlines deals on Sofia to Chicago flight tickets
United Airlines
Apr 24
SOF6:20 amSofia
14h 35m
1 stop
ORD12:55 pmChicago O'Hare Intl
May 2
ORD5:55 pmChicago O'Hare Intl
21h 05m
1 stop
SOF11:00 pmSofia
$717
United Airlines
May 14
SOF6:30 amSofia
16h 20m
1 stop
ORD2:50 pmChicago O'Hare Intl
May 25
ORD6:30 pmChicago O'Hare Intl
15h 30m
1 stop
SOF6:00 pmSofia
$718
United Airlines
Mar 19
SOF2:35 pmSofia
13h 30m
1 stop
ORD9:05 pmChicago O'Hare Intl
Apr 4
ORD9:40 pmChicago O'Hare Intl
13h 00m
1 stop
SOF6:40 pmSofia
$719

Air Canada flights from Sofia to Chicago

Our best Air Canada deals on Sofia to Chicago flight tickets
Air Canada
May 8
SOF6:20 amSofia
37h 08m
2 stops
ORD11:28 amChicago O'Hare Intl
Jun 1
ORD10:00 amChicago O'Hare Intl
18h 10m
2 stops
SOF12:10 pmSofia
$731
Air Canada
Apr 24
SOF2:10 pmSofia
15h 53m
2 stops
ORD10:03 pmChicago O'Hare Intl
May 2
ORD9:55 amChicago O'Hare Intl
18h 15m
2 stops
SOF12:10 pmSofia
$734
Air Canada
May 14
SOF6:30 amSofia
16h 25m
2 stops
ORD2:55 pmChicago O'Hare Intl
May 25
ORD9:55 amChicago O'Hare Intl
17h 00m
2 stops
SOF10:55 amSofia
$735

momondo Fare Finder

 
Customize your flight search to find flights from Sofia to Chicago 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 February 26, 2026.
Use the filters below to find and compare flights from Sofia to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 4/11

2:35 pm-7:50 pm

1 stop13h 15m

Chicago O'Hare Intl

Sat 4/25

9:50 pm-2:00 am

1 stop20h 10m

$653

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 3/19

2:35 pm-9:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Sat 4/4

9:50 pm-6:00 pm

1 stop12h 10m

$662

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 6/25

5:30 am-3:10 pm

1 stop17h 40m

Chicago O'Hare Intl

Mon 7/20

9:50 pm-6:00 pm

1 stop12h 10m

$667

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 3/19

2:35 pm-9:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Sat 4/4

9:50 pm-6:00 pm

1 stop12h 10m

$671

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 5/20

2:35 pm-3:10 pm

1 stop32h 35m

Chicago O'Hare Intl

Fri 8/21

5:10 pm-6:00 pm

2 stops16h 50m

$672

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 4/2

2:35 pm-7:50 pm

2 stops37h 15m

Chicago O'Hare Intl

Fri 7/31

9:50 pm-1:50 pm

1 stop32h 00m

$674

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 3/19

7:00 am-5:54 pm

2 stops17h 54m

Chicago Midway

Sat 4/4

1:10 pm-2:00 pm

2 stops16h 50m

$758

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 3/19

7:00 am-5:54 pm

2 stops17h 54m

Chicago Midway

Sat 4/4

1:10 pm-2:00 pm

2 stops16h 50m

$759

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Wed 3/25

7:00 am-5:54 pm

2 stops17h 54m

Chicago Midway

Wed 4/1

1:10 pm-2:00 pm

2 stops16h 50m

$819

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 5/14

7:00 am-5:56 pm

2 stops18h 56m

Chicago Midway

Mon 5/25

1:59 pm-2:00 pm

2 stops16h 01m

$992

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Chicago from

How to get the cheapest flight ticket from Sofia to Chicago

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?

The month of April is, on average, the cheapest month to fly to Chicago from Sofia, with most prices found around $679. If you’re not able to fly to Chicago in April, then February is your next best option. Flight prices from Sofia to Chicago during February average around $690.

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

You are more likely to see cheaper flights to Chicago from Sofia when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $742 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Sofia for as low as $667 on momondo.

How have Sofia to Chicago flight prices changed over time?

As of February 2026, prices for Sofia to Chicago flights are approximately 8% cheaper when compared to flights at the same time last year.

When to book flights from Sofia to Chicago

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

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

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

Fastest flight time

16h 05m

Direct flights

None
The fastest flight from Sofia to Chicago takes 16h 05m
There are no direct flights from Sofia to Chicago. There are no popular flight routes from Sofia to Chicago.
Search flight deals

  • How far is Sofia to Chicago by plane?

    A flight from Sofia to Chicago will travel around 5185.9 mi. 16h 05m is a normal flight duration for this route.

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

    Prices for flights from Sofia Airport to Chicago are updated daily.

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

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

    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 Sofia Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sofia to Chicago?

Best airlines flying from Sofia to Chicago

Compare and see reviews for airlines that fly from Sofia to Chicago with momondo
Airline
Rating
Free Cancellation
Price
LOTPriceFrom $609Free CancellationRating
7.5
1,182 reviews
Search LOT flights
KLMPriceFrom $621Free CancellationRating
7.7
1,460 reviews
Search KLM flights
Turkish AirlinesPriceFrom $625Free CancellationRating
7.3
4,240 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $651Free CancellationRating
7.4
9,351 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $658Free CancellationRating
7.6
901 reviews
Search Austrian Airlines flights
LufthansaPriceFrom $667Free CancellationRating
6.8
7,815 reviews
Search Lufthansa flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Saint Joseph
Portage
Lansing
Schererville
Valparaiso
Munster
Crown Point
Chesterton
Monticello
Porter
Griffith
Saint John

Why use momondo?

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

Finding the right flight to Chicago from Sofia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.

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

All flight searches from Sofia to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

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

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

An easier way to manage your Chicago 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 3/28
Sat 4/4
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport