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Sofia

$448+ Cheap flights from Illinois 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Illinois to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) 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 December 22, 2024.

Round-trip from

$541
(lol.travel)

One-way from

$448
(oojo)
From Illinois to Sofia
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One-way flight from Illinois to Sofia
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Find flight deals from Illinois to Sofia

Cheapest flights from Illinois to Sofia
Explore the most affordable flight options available from Illinois to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 22, 2024.

This United Airlines deal was found by Cheapflights users on 12/21. 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 12/267:20 amORD - SOF
2 stops31h 05mUnited Airlines
Tue 2/186:00 amSOF - ORD
2 stops36h 54mUnited Airlines
Deal found 12/21$649
This FlightHub deal was found by Cheapflights users on 12/21. 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.
Sat 12/2811:35 amORD - SOF
2 stops18h 00mMultiple Airlines
Sun 3/166:45 pmSOF - ORD
1 stop27h 20mMultiple Airlines
Deal found 12/21$660
This oojo deal was found by Cheapflights users on 12/22. 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 12/289:55 pmORD - SOF
1 stop31h 55mLOT
Sun 3/162:35 pmSOF - ORD
1 stop13h 25mLOT
Deal found 12/22$779
This Air Canada deal was found by Cheapflights users on 12/21. 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.
Wed 12/2512:51 pmORD - SOF
2 stops16h 54mAir Canada
Thu 1/162:25 pmSOF - ORD
2 stops25h 40mAir Canada
Deal found 12/21$800
This Austrian Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/239:10 pmORD - SOF
2 stops18h 45mAustrian Airlines
Thu 1/166:45 pmSOF - ORD
1 stop27h 20mAustrian Airlines
Deal found 12/21$928
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:05 pmORD - SOF
1 stop12h 10mSWISS
Thu 1/164:00 pmSOF - ORD
1 stop32h 15mSWISS
Deal found 12/21$1,014
This Lufthansa deal was found by Cheapflights users on 12/21. 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.
Mon 12/239:25 pmORD - SOF
1 stop12h 45mLufthansa
Thu 1/161:45 pmSOF - ORD
1 stop12h 40mLufthansa
Deal found 12/21$1,036
This British Airways deal was found by Cheapflights users on 12/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/235:00 pmORD - SOF
1 stop16h 10mBritish Airways
Fri 1/108:15 pmSOF - ORD
2 stops29h 23mBritish Airways
Deal found 12/20$1,083
This Mytrip deal was found by Cheapflights users on 12/21. 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.
Tue 12/243:50 pmSTL - SOF
2 stops37h 55mAir Canada
Fri 12/276:20 amSOF - STL
2 stops40h 46mAir Canada
Deal found 12/21$1,386
This Air Canada deal was found by Cheapflights users on 12/21. 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.
Tue 12/243:50 pmSTL - SOF
2 stops37h 55mMultiple Airlines
Fri 12/276:20 amSOF - STL
3 stops23h 25mMultiple Airlines
Deal found 12/21$1,584
This KLM deal was found by Cheapflights users on 12/21. 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 12/2411:48 amMDW - SOF
2 stops18h 17mKLM
Thu 1/167:00 amSOF - MDW
2 stops19h 14mKLM
Deal found 12/21$1,630
This Emirates deal was found by Cheapflights users on 12/22. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:45 pmORD - SOF
1 stop33h 40mEmirates
Sat 3/151:10 amSOF - ORD
1 stop21h 35mEmirates
Deal found 12/22$1,635

Find flights from Illinois to Sofia within your budget

Customize your flight search to find flights from Illinois 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 2,558,603 searches. Data last updated December 22, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 2/4

8:30 pm-8:50 pm

1 stop16h 20m

Sofia

Tue 2/11

3:55 pm-6:35 pm

1 stop34h 40m

$541

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 4/2

9:40 pm-1:55 pm

1 stop32h 15m

Sofia

Sat 4/12

2:40 pm-3:10 pm

2 stops32h 30m

$591

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 1/21

3:55 pm-1:30 pm

1 stop13h 35m

Sofia

Tue 2/4

6:00 am-6:50 pm

2 stops20h 50m

$606

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 2/5

11:35 am-1:45 pm

2 stops18h 10m

Sofia

Wed 2/12

6:00 am-2:45 pm

2 stops16h 45m

$630

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 1/11

3:55 pm-10:25 pm

1 stop22h 30m

Sofia

Sat 1/25

1:45 pm-6:25 pm

1 stop12h 40m

$646

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 2/2

5:20 pm-4:20 pm

2 stops15h 00m

Sofia

Mon 2/17

5:25 pm-2:30 pm

2 stops29h 05m

$657

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 2/5

6:00 pm-6:10 pm

1 stop16h 10m

Sofia

Wed 2/19

6:00 am-6:45 pm

2 stops20h 45m

$661

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Tue 2/4

1:26 pm-1:55 pm

2 stops16h 29m

Sofia

Tue 2/11

7:10 am-10:20 pm

2 stops23h 10m

$668

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Tue 2/4

2:08 pm-2:05 pm

2 stops15h 57m

Sofia

Tue 2/11

7:00 am-5:43 pm

2 stops18h 43m

$678

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 2/26

4:25 pm-2:05 pm

1 stop13h 40m

Sofia

Mon 3/24

7:00 am-8:44 pm

2 stops20h 44m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 24 results
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Best time to book a flight from Illinois to Sofia

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

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

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Sofia (average of $632). Flying from Illinois to Sofia in June is currently the most expensive (average of $1,243). 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 IL to SOF?

Find hourly flight availability from Illinois 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 December 22, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Sofia as you normally would.

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 December 22, 2024.
Peruse reviews from past customers who have flown with Air Canada, Lufthansa and United Airlines from Illinois to Sofia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,342 reviews

Boarding

7.9

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

KLM
7.8
Good
1,342 reviews
KLM
7.8
Good
1,342 reviews

Boarding

7.9

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

LOT
7.6
Good
1,127 reviews
KLM
7.8
Good
1,342 reviews

Boarding

7.9

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

SWISS
7.6
Good
1,605 reviews
KLM
7.8
Good
1,342 reviews

Boarding

7.9

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

JetBlue
7.4
Good
3,265 reviews
KLM
7.8
Good
1,342 reviews

Boarding

7.9

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Air France
7.4
Good
1,501 reviews
KLM
7.8
Good
1,342 reviews

Boarding

7.9

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.2

Food

7.3

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 Illinois?

    Most people fly into Sofia (SOF) if they book a flight to Sofia from Illinois. Sofia is conveniently located just 4.2 mi from Sofia’s city center.

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

    The cheapest airlines for a one-way flight from Illinois to Sofia are Turkish Airlines ($448), LOT ($470), and JetBlue ($481).

  • What are the most popular routes from Illinois to Sofia?

    While some choose either Chicago Midway - Sofia or Lambert-St Louis - Sofia, Chicago O'Hare Intl - Sofia is the most popular route from Illinois to Sofia.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Illinois to Sofia (average of $632). Flying from Illinois to Sofia in June is currently the most expensive (average of $1,243). 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

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Alternative routes for Illinois to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Sofia

Discover the top 10 airlines that operate flights from Illinois 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 2,558,603 searches. Data last updated December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$499Average$718FlexibilityNo cancel feeOn-time77%
KLMCheapest$545Average$738FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$568Average$913FlexibilityNo cancel feeOn-time70%
LOTCheapest$585Average$901FlexibilityNo cancel feeOn-time81%
Austrian AirlinesCheapest$591Average$913FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$626Average$1,076FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$630Average$919FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$650Average$817FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$682Average$984FlexibilityNo cancel feeOn-time67%
SWISSCheapest$715Average$1,124FlexibilityNo cancel feeOn-time79%
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