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Sofia

$421+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
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 November 21, 2024.

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 November 21, 2024.

This FlightHub deal was found by Cheapflights users on 11/21. 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.
Thu 12/59:55 pmORD - SOF
1 stop31h 55mLOT
Fri 1/172:35 pmSOF - ORD
1 stop13h 25mLOT
Deal found 11/21$567
This Cheapflightsfares deal was found by Cheapflights users on 11/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/263:55 pmORD - SOF
1 stop22h 30mMultiple Airlines
Fri 12/138:00 amSOF - ORD
1 stop14h 05mMultiple Airlines
Deal found 11/21$615
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:20 amORD - SOF
2 stops22h 10mAir Canada
Mon 3/316:00 amSOF - ORD
2 stops16h 45mAir Canada
Deal found 11/20$629
This British Airways deal was found by Cheapflights users on 11/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/34:00 pmORD - SOF
2 stops14h 10mBritish Airways
Tue 12/106:05 pmSOF - ORD
1 stop27h 50mBritish Airways
Deal found 11/21$630
This United Airlines 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/99:25 pmORD - SOF
1 stop17h 20mUnited Airlines
Wed 3/266:00 amSOF - ORD
2 stops20h 37mUnited Airlines
Deal found 11/20$635
This SWISS deal was found by Cheapflights users on 11/21. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/297:05 pmORD - SOF
1 stop31h 15mSWISS
Sun 12/811:05 amSOF - ORD
1 stop13h 10mSWISS
Deal found 11/21$638
This Lufthansa deal was found by Cheapflights users on 11/21. 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.
Sat 11/309:25 pmORD - SOF
1 stop12h 45mLufthansa
Mon 12/92:20 pmSOF - ORD
1 stop13h 45mLufthansa
Deal found 11/21$640
This Air France deal was found by Cheapflights users on 11/21. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/61:45 pmORD - SOF
2 stops16h 10mAir France
Thu 1/167:10 amSOF - ORD
1 stop15h 55mAir France
Deal found 11/21$649
This Air France deal was found by Cheapflights users on 11/21. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/101:30 pmMDW - SOF
2 stops16h 25mMultiple Airlines
Wed 1/157:00 amSOF - MDW
2 stops19h 14mMultiple Airlines
Deal found 11/21$655
This KLM deal was found by Cheapflights users on 11/21. 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.
Fri 12/61:30 pmMDW - SOF
2 stops16h 35mKLM
Thu 1/167:00 amSOF - MDW
2 stops19h 14mKLM
Deal found 11/21$661
This Air Serbia deal was found by Cheapflights users on 11/21. 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 Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/712:30 pmORD - SOF
1 stop30h 30mAir Serbia
Mon 9/85:00 amSOF - ORD
1 stop20h 00mAir Serbia
Deal found 11/21$708
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1211:55 amORD - SOF
1 stop13h 00mTurkish Airlines
Thu 3/279:45 amSOF - ORD
1 stop16h 50mTurkish Airlines
Deal found 11/20$727

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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

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Fly to

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Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 1/7

7:45 am-1:30 pm

2 stops21h 45m

Sofia

Fri 1/17

6:20 am-10:54 am

2 stops36h 34m

$546

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 1/13

9:25 pm-10:45 pm

1 stop17h 20m

Sofia

Thu 2/6

6:10 am-7:37 pm

2 stops21h 27m

$547

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sat 1/11

9:55 pm-5:50 pm

1 stop11h 55m

Sofia

Wed 4/9

2:40 pm-7:40 pm

1 stop13h 00m

$548

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 1/10

9:25 pm-6:10 pm

1 stop12h 45m

Sofia

Mon 4/7

1:55 pm-7:55 pm

1 stop14h 00m

$553

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Thu 2/13

11:55 am-8:55 am

1 stop13h 00m

Sofia

Tue 4/15

9:15 am-5:55 pm

1 stop16h 40m

$563

ChicagoSofia

MDW - SOF

MDWSOF

Chicago Midway

Fri 1/31

2:08 pm-1:55 pm

2 stops15h 47m

Sofia

Sun 3/2

7:00 am-5:47 pm

2 stops18h 47m

$565

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

Thu 1/9

10:30 am-2:05 pm

2 stops19h 35m

Sofia

Tue 4/8

7:00 am-9:43 pm

2 stops22h 43m

$577

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 1/7

4:00 pm-6:10 pm

2 stops18h 10m

Sofia

Sat 1/18

6:00 am-2:45 pm

2 stops16h 45m

$597

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 12/3

4:00 pm-2:10 pm

2 stops14h 10m

Sofia

Tue 12/10

6:05 pm-1:55 pm

1 stop27h 50m

$630

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 31 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 November 21, 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 November 21, 2024.
Peruse reviews from past customers who have flown with United Airlines, LOT and Lufthansa 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
1,349 reviews

Comfort

7.7

Food

7.3

Overall

7.8

Boarding

7.9

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

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

KLM
7.8
Good
1,349 reviews
KLM
7.8
Good
1,349 reviews

Comfort

7.7

Food

7.3

Overall

7.8

Boarding

7.9

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

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

LOT
7.6
Good
1,169 reviews
KLM
7.8
Good
1,349 reviews

Comfort

7.7

Food

7.3

Overall

7.8

Boarding

7.9

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
804 reviews
KLM
7.8
Good
1,349 reviews

Comfort

7.7

Food

7.3

Overall

7.8

Boarding

7.9

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

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

SWISS
7.6
Good
1,636 reviews
KLM
7.8
Good
1,349 reviews

Comfort

7.7

Food

7.3

Overall

7.8

Boarding

7.9

Crew

8.4

Entertainment

7.2

Reviews

1 / 10

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

Air France
7.4
Good
1,525 reviews
KLM
7.8
Good
1,349 reviews

Comfort

7.7

Food

7.3

Overall

7.8

Boarding

7.9

Crew

8.4

Entertainment

7.2

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 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 Air France ($429), KLM ($439), and LOT ($444).

  • 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 2,612,795 searches. Data last updated November 21, 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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