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$401+ Cheap flights from Chicago (CHI) to Sofia (SOF)

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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SOF
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Chicago to Sofia are usually found in November or February, booked 3 days in advance, depart on a Thursday or Sunday and return on a Thursday

Cheap flight deals from Chicago to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Sofia (SOF). 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 November 20, 2024.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Popular in

June

Cheapest in

November

Round-trip from

$543
(United Airlines)

One-way from

$403
(Kiwi.com)
Provider with most accurate pricing for Chicago (CHI)-Sofia flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Sofia flights.
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High demand for flights, 35% potential price rise
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Best time to find cheap flights, 28% potential price drop
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From Chicago (CHI) to Sofia
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One-way flight from Chicago (CHI) to Sofia
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Find flight deals from Chicago to Sofia

Cheapest flights from Chicago to Sofia
Explore the most affordable flight options available from Chicago to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This FlightHub deal was found by Cheapflights users on 11/20. 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.
Thu 11/289:55 pmORD - SOF
1 stop11h 55mLOT
Mon 3/106:35 pmSOF - ORD
1 stop33h 25mLOT
Deal found 11/20$567
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/18:25 pmORD - SOF
3 stops35h 05mMultiple Airlines
Tue 12/108:20 pmSOF - ORD
2 stops27h 10mMultiple Airlines
Deal found 11/18$588
This Gotogate deal was found by Cheapflights users on 11/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/263:55 pmORD - SOF
1 stop22h 30mLufthansa
Sat 12/76:00 amSOF - ORD
1 stop22h 05mLufthansa
Deal found 11/20$616
This Gotogate deal was found by Cheapflights users on 11/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/19:50 amORD - SOF
2 stops19h 50mAir Canada
Tue 12/106:05 amSOF - ORD
2 stops21h 27mAir Canada
Deal found 11/20$619
This United deal was found by Cheapflights users on 11/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/19:25 pmORD - SOF
1 stop12h 45mUnited Airlines
Wed 12/116:00 amSOF - ORD
2 stops20h 41mUnited Airlines
Deal found 11/20$629
This British Airways deal was found by Cheapflights users on 11/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/282:45 pmORD - SOF
2 stops20h 40mBritish Airways
Tue 3/116:05 pmSOF - ORD
1 stop27h 00mBritish Airways
Deal found 11/19$632
This KLM deal was found by Cheapflights users on 11/19. 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.
Wed 12/44:25 pmORD - SOF
1 stop13h 40mKLM
Wed 12/117:00 amSOF - ORD
2 stops17h 58mKLM
Deal found 11/19$656
This KLM deal was found by Cheapflights users on 11/19. 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.
Wed 12/41:30 pmMDW - SOF
2 stops16h 35mKLM
Tue 12/107:00 amSOF - MDW
2 stops19h 32mKLM
Deal found 11/19$661
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/1012:00 pmORD - SOF
2 stops18h 10mAmerican Airlines
Tue 12/246:05 pmSOF - ORD
1 stop30h 55mAmerican Airlines
Deal found 11/19$720
This Air France deal was found by Cheapflights users on 11/19. 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.
Wed 12/111:45 pmORD - SOF
2 stops16h 20mAir France
Mon 1/137:00 amSOF - ORD
1 stop16h 05mAir France
Deal found 11/19$813
This Air France deal was found by Cheapflights users on 11/19. 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 12/121:30 pmMDW - SOF
2 stops16h 25mMultiple Airlines
Mon 1/137:00 amSOF - MDW
2 stops18h 47mMultiple Airlines
Deal found 11/19$964
This Aeromexico deal was found by Cheapflights users on 11/20. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/151:30 pmMDW - SOF
2 stops16h 25mAir France
Wed 1/157:00 amSOF - MDW
2 stops23h 20mAir France
Deal found 11/20$1,156

Find flights from Chicago to Sofia within your budget

Customize your flight search to find flights from Chicago to Sofia 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 1/8

5:50 pm-6:10 pm

2 stops16h 20m

Sofia

Wed 1/22

6:00 am-7:55 pm

2 stops21h 55m

$543

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 2/7

7:20 am-2:00 pm

2 stops22h 40m

Sofia

Sat 2/22

1:45 pm-10:54 am

2 stops29h 09m

$554

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Wed 2/5

12:44 pm-2:05 pm

2 stops17h 21m

Sofia

Wed 2/19

7:00 am-5:47 pm

2 stops18h 47m

$565

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Thu 1/9

2:08 pm-1:55 pm

2 stops15h 47m

Sofia

Wed 1/22

7:00 am-10:20 pm

2 stops23h 20m

$569

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Mon 1/13

2:08 pm-2:05 pm

2 stops15h 57m

Sofia

Thu 2/6

7:00 am-5:47 pm

2 stops18h 47m

$571

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 12/30

9:55 pm-1:50 pm

1 stop31h 55m

Sofia

Tue 1/14

6:35 pm-8:00 pm

1 stop33h 25m

$577

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 4/18

11:35 am-8:25 pm

1 stop24h 50m

Sofia

Fri 5/2

9:15 pm-5:55 pm

1 stop28h 40m

$583

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 12/1

9:50 am-1:40 pm

2 stops19h 50m

Sofia

Tue 12/10

6:05 am-7:32 pm

2 stops21h 27m

$619

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 12/1

10:35 pm-10:25 pm

1 stop15h 50m

Sofia

Tue 12/10

6:55 pm-6:25 pm

1 stop31h 30m

$638

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 12/6

4:25 pm-2:05 pm

1 stop13h 40m

Sofia

Fri 12/13

7:00 am-2:30 pm

1 stop15h 30m

$646

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 27 results
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Compare providers for flights from Chicago to Sofia

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 Chicago to Sofia in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
KAYAKPrice Accuracy1 starTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy2 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*1 star

*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 Chicago-Sofia flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago-Sofia flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Chicago-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Sofia flights, Cheapflights users trust AranGrant the most. AranGrant 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 Chicago-Sofia 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 Chicago to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Chicago 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.

Travel insights for flights from Chicago to Sofia

Get recent, data-driven insights about flights from Chicago to Sofia including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Sofia. Price data was last updated on November 15, 2024.

The price you pay for your flight from Chicago to Sofia may vary depending on when you book. For the best chance of a lower fare, look to book 3 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Chicago to Sofia (average of $606). Flying from Chicago to Sofia in June is currently the most expensive (average of $1,242). 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 CHI to SOF?

Find hourly flight availability from Chicago to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

It’s optimal to fly from Chicago to Sofia in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Chicago to Sofia. Price data was last updated on November 18, 2024.

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

Rainfall in Sofia by month

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

In terms of precipitation, rainfall in Sofia ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

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

If weather is an important factor for your trip to Sofia, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated November 20, 2024.
Peruse reviews from past customers who have flown with Air France, KLM and Lufthansa from Chicago to Sofia to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,350 reviews

Overall

7.8

Crew

8.4

Comfort

7.7

Boarding

7.9

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

KLM
7.8
Good
1,350 reviews
KLM
7.8
Good
1,350 reviews

Overall

7.8

Crew

8.4

Comfort

7.7

Boarding

7.9

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

LOT
7.6
Good
1,165 reviews
KLM
7.8
Good
1,350 reviews

Overall

7.8

Crew

8.4

Comfort

7.7

Boarding

7.9

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

SWISS
7.6
Good
1,637 reviews
KLM
7.8
Good
1,350 reviews

Overall

7.8

Crew

8.4

Comfort

7.7

Boarding

7.9

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Air France
7.4
Good
1,523 reviews
KLM
7.8
Good
1,350 reviews

Overall

7.8

Crew

8.4

Comfort

7.7

Boarding

7.9

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Turkish Airlines
7.4
Good
3,915 reviews
KLM
7.8
Good
1,350 reviews

Overall

7.8

Crew

8.4

Comfort

7.7

Boarding

7.9

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight performed by El Al. The aircraft was dirty. Gum in front pcket. Poorly maintained.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Sofia. 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 into for flights to Sofia from Chicago?

    Sofia (SOF) is the airport you will fly into if you book a flight from Chicago to Sofia. You should not have trouble finding flights to Sofia from Chicago; the airport handles an average of 0 inbound flights from Chicago per day. You should also have plenty of airline options to choose from since 11 airlines have flights to the Sofia airport from Chicago. It is only a 4.2 mi journey from Sofia (SOF) to Sofia’s city center.

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

    According to our current data, United Airlines ($543), LOT ($567), and Air France ($569) offers the cheapest pricing from Chicago to Sofia. United Airlines is currently priced 31% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is LOT, with whom users have recently found tickets for as low as $444. However, be on the lookout for offers from Air Serbia and British Airways, as they are both options that can get you from Chicago to Sofia for a low price.

  • Where are the most common layover locations when flying from Chicago to Sofia?

    Chicago to Sofia flights have a layover in Istanbul most often. Munich sees the next most layovers on Chicago to Sofia flights.

  • What are some popular things to do or see while on a layover in Istanbul?

    The majority of Istanbul visitors spend their time at Taksim Square, Sultan Ahmet Camii, and Ayasofya. Taksim Square, Sultan Ahmet Camii, and Ayasofya can be visited by traveling about 20.8 mi, 22.3 mi, and 22.2 mi respectively from Istanbul. Those on a layover in Istanbul in need of a rental car can book one at Istanbul for about $28.

  • What are some popular points of interest to see during a layover in Munich?

    Most Munich visitors opt to spend their time at Theresienwiese, Marienplatz, and Altes Rathaus. Theresienwiese, Marienplatz, and Altes Rathaus are located about 18.8 mi, 17.8 mi, and 17.8 mi, respectively from Munich Franz Josef Strauss. Those on a layover in Munich in need of a rental car can book one at Munich Franz Josef Strauss for about $43.

  • Where are the least popular layover locations for Chicago to Sofia flights?

    Chicago to Sofia flights have a layover in Frankfurt am Main least often. Frankfurt am Main is followed by Warsaw in terms of the least popular layover location on flights from Chicago to Sofia.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago to Sofia 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 Chicago to Sofia?

    Currently, November is the cheapest month in which you can book a flight from Chicago to Sofia (average of $606). Flying from Chicago to Sofia in June is currently the most expensive (average of $1,242). 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.

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Alternative routes for Chicago to Sofia

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

Top 10 airlines flying from Chicago to Sofia

Discover the top 10 airlines that operate flights from Chicago to Sofia. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$508Average$724FlexibilityNo cancel feeOn-time77%
KLMCheapest$545Average$738FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$568Average$909FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$579Average$905FlexibilityNo cancel feeOn-time78%
LOTCheapest$585Average$893FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$613Average$1,073FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$619Average$907FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$650Average$817FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$682Average$962FlexibilityNo cancel feeOn-time67%
SWISSCheapest$685Average$1,115FlexibilityNo cancel feeOn-time79%
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