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$353+ Cheap flights from Sofia (SOF) to Chicago (CHI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — CHI
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Sofia to Chicago are usually found in November or May, booked 80 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap flight deals from Sofia to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$640
(oojo)

One-way from

$353
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$666
Provider with most accurate pricing for Sofia-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Sofia-Chicago (CHI) flights.
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From Sofia to Chicago (CHI)
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One-way flight from Sofia to Chicago (CHI)
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Highest demand for flights based on searches. 3% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Sofia to Chicago

Cheapest flights from Sofia to Chicago
Explore the most affordable flight options available from Sofia to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This oojo deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/55:20 amSOF - ORD
1 stop17h 50mLOT
Sun 4/69:40 pmORD - SOF
1 stop32h 10mLOT
Deal found 3/27$640
This KLM deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:00 amSOF - ORD
1 stop15h 10mKLM
Sun 6/84:20 pmORD - SOF
1 stop13h 40mKLM
Deal found 3/27$641
This United Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:15 amSOF - ORD
2 stops21h 15mUnited Airlines
Fri 5/96:15 pmORD - SOF
1 stop20h 35mUnited Airlines
Deal found 3/26$651
This American Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/302:20 pmSOF - ORD
2 stops24h 55mAmerican Airlines
Sat 6/287:10 pmORD - SOF
1 stop17h 10mAmerican Airlines
Deal found 3/26$655
This Lufthansa deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/296:00 amSOF - ORD
1 stop15h 55mMultiple Airlines
Wed 3/188:05 pmORD - SOF
1 stop12h 10mMultiple Airlines
Deal found 3/26$663
This Austrian Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/66:55 pmSOF - ORD
1 stop26h 25mAustrian Airlines
Fri 11/284:20 pmORD - SOF
1 stop23h 35mAustrian Airlines
Deal found 3/26$672
This Lufthansa deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/67:25 pmSOF - ORD
1 stop26h 30mLufthansa
Sun 11/306:00 pmORD - SOF
1 stop20h 45mLufthansa
Deal found 3/26$675
This Air France deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/107:00 amSOF - MDW
2 stops17h 12mMultiple Airlines
Sun 4/132:57 pmMDW - SOF
2 stops15h 03mMultiple Airlines
Deal found 3/26$681
This Air Canada deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/76:15 amSOF - ORD
2 stops36h 32mAir Canada
Wed 11/267:20 amORD - SOF
2 stops22h 15mAir Canada
Deal found 3/26$684
This FlightHub deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/273:35 pmSOF - ORD
1 stop26h 05mTurkish Airlines
Sat 8/97:50 pmORD - SOF
1 stop28h 45mTurkish Airlines
Deal found 3/26$689
This Air Serbia deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:00 pmSOF - ORD
1 stop13h 10mAir Serbia
Sat 11/296:40 pmORD - SOF
1 stop24h 20mAir Serbia
Deal found 3/26$706
This KLM deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/197:00 amSOF - MDW
2 stops18h 57mKLM
Mon 6/301:09 pmMDW - SOF
2 stops16h 51mKLM
Deal found 3/27$717

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
Use the filters below to find and compare flights from Sofia to Chicago that are best for you.

Fly from

Sofia

Fly to

Chicago

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 4/7

6:40 pm-7:40 pm

1 stop33h 00m

Chicago O'Hare Intl

Sat 8/30

9:40 pm-5:55 pm

1 stop12h 15m

$640

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 4/29

7:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Sun 6/8

4:20 pm-2:00 pm

1 stop13h 40m

$641

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 4/24

6:15 am-7:30 pm

2 stops21h 15m

Chicago O'Hare Intl

Fri 5/9

6:15 pm-10:50 pm

1 stop20h 35m

$651

SofiaChicago

SOF - ORD

SOFORD

Sofia

Fri 5/30

2:20 pm-7:15 am

2 stops24h 55m

Chicago O'Hare Intl

Sat 6/28

7:10 pm-8:20 pm

1 stop17h 10m

$655

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 4/29

6:00 am-1:55 pm

1 stop15h 55m

Chicago O'Hare Intl

Wed 3/18

8:05 pm-3:15 pm

1 stop12h 10m

$663

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 4/6

6:55 pm-1:20 pm

1 stop26h 25m

Chicago O'Hare Intl

Fri 11/28

4:20 pm-11:55 pm

1 stop23h 35m

$672

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 4/6

7:25 pm-1:55 pm

1 stop26h 30m

Chicago O'Hare Intl

Sun 11/30

6:00 pm-10:45 pm

1 stop20h 45m

$675

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 4/10

7:00 am-4:12 pm

2 stops17h 12m

Chicago Midway

Sun 4/13

2:57 pm-2:00 pm

2 stops15h 03m

$681

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 4/7

6:15 am-10:47 am

2 stops36h 32m

Chicago O'Hare Intl

Wed 11/26

7:20 am-1:35 pm

2 stops22h 15m

$684

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sun 7/27

3:35 pm-9:40 am

1 stop26h 05m

Chicago O'Hare Intl

Sat 8/9

7:50 pm-8:35 am

1 stop28h 45m

$689

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 25 results
1
2
3

Compare providers for flights from Sofia to Chicago

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sofia to Chicago in March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
oojoPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sofia-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sofia-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sofia to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Sofia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sofia to Chicago

How far ahead should I book a flight from Sofia to Chicago?

Use this chart to determine the optimal time to book a round-trip flight from Sofia to Chicago. Price data was last updated on March 21, 2025.

The best time to book flights from Sofia to Chicago is 80 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Sofia to Chicago?

Currently, August is the cheapest month in which you can book a flight from Sofia to Chicago (average of $245). Flying from Sofia to Chicago in March is currently the most expensive (average of $323). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SOF to CHI?

Find hourly flight availability from Sofia to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Sofia to Chicago in the afternoon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Sofia to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Sofia to Chicago. Price data was last updated on June 30, 2024.

Travelers seeking maximum savings on their Sofia to Chicago flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated March 28, 2025.
Read through reviews of airlines operating flights from Sofia to Chicago, such as Emirates, KLM and LOT. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Boarding

8.1

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Emirates
8.0
Very good
3,190 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Boarding

8.1

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
KLM
7.8
Good
1,321 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Boarding

8.1

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
LOT
7.6
Good
1,063 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Boarding

8.1

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Austrian Airlines
7.5
Good
769 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Boarding

8.1

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.
Qatar Airways
7.4
Good
3,538 reviews
Emirates
8.0
Very good
3,190 reviews

Entertainment

8.2

Overall

8.0

Food

7.8

Comfort

8.0

Boarding

8.1

Crew

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2024

DXB - IAH

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Related info for your journey

Find useful and relevant information for your journey from Sofia to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sofia to Chicago?

    Most people fly from Sofia (SOF) if they book a flight from Sofia to Chicago. On average, Sofia has 0 outbound flights to Chicago per day from 8 airlines. Sofia is conveniently located just 4.2 mi from Sofia’s city center.

  • What are the cheapest airlines flying from Sofia to Chicago round-trip?

    Currently priced at $640, LOT will fly you from Sofia to Chicago and back. In addition to LOT, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and United Airlines - these airlines can fly you to your destination from $641 and $651, respectively. LOT is priced at 11% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Sofia to Chicago one-way?

    One-way options have recently been found by users for as low as $434 on Air Serbia. Other airlines that offer cheap prices include Qatar Airways from $561 and British Airways from $627 one-way.

  • Can I find deals for flights from Sofia to Chicago that include hotel bookings?

    Yes. In addition to deals on Sofia to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sofia to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sofia to Chicago.

  • Can I find deals for business class flights from Sofia to Chicago?

    Yes. Cheapflights offers flight deals from Sofia to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sofia to Chicago?

    Currently, August is the cheapest month in which you can book a flight from Sofia to Chicago (average of $245). Flying from Sofia to Chicago in March is currently the most expensive (average of $323). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
Chesterton

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Alternative routes for Sofia to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
Sofia to O'Hare Intl flights
Sofia to Midway flights

Top 8 airlines flying from Sofia to Chicago

Discover the top 8 airlines that operate flights from Sofia to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$460Average$796FlexibilityNo cancel feeOn-time75%
LOTCheapest$490Average$639FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$546Average$864FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$560Average$672FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$576Average$728FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$592Average$771FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$603Average$724FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$627Average$708FlexibilityNo cancel feeOn-time77%
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