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$416+ Cheap flights from Sofia (SOF) to Illinois

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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Sofia to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Illinois (USIL). 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.

Find flight deals from Sofia to Illinois

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

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 12/36:05 pmSOF - ORD
1 stop27h 50mAmerican Airlines
Mon 12/93:00 pmORD - SOF
2 stops18h 10mAmerican Airlines
Deal found 11/19$593
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/51:45 pmSOF - ORD
1 stop12h 40mMultiple Airlines
Sat 1/114:20 pmORD - SOF
1 stop11h 30mMultiple Airlines
Deal found 11/19$603
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:05 amSOF - ORD
1 stop20h 20mLufthansa
Sat 3/2911:35 pmORD - SOF
1 stop15h 00mLufthansa
Deal found 11/19$609
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 12/57:10 amSOF - ORD
1 stop15h 55mAir France
Sat 1/1110:05 amORD - SOF
2 stops19h 50mAir France
Deal found 11/19$618
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:05 amSOF - ORD
1 stop16h 05mUnited Airlines
Sat 3/2911:35 amORD - SOF
2 stops27h 00mUnited Airlines
Deal found 11/19$628
This Air Canada 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:05 amSOF - ORD
2 stops21h 27mAir Canada
Sat 3/2911:35 amORD - SOF
2 stops17h 35mAir Canada
Deal found 11/19$632
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 12/57:10 amSOF - MDW
2 stops22h 36mAir France
Sat 1/1111:19 amMDW - SOF
2 stops18h 36mAir France
Deal found 11/19$640
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 12/47:00 amSOF - MDW
2 stops19h 32mKLM
Sat 3/291:00 pmMDW - SOF
2 stops17h 00mKLM
Deal found 11/19$644
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.
Mon 11/257:00 amSOF - ORD
2 stops18h 46mKLM
Mon 12/94:25 pmORD - SOF
1 stop13h 40mKLM
Deal found 11/19$704
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/206:35 pmSOF - ORD
1 stop33h 25mLOT
Sat 11/239:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 11/19$884
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/198:00 amSOF - MDW
3 stops35h 10mMultiple Airlines
Thu 1/25:35 pmMDW - SOF
3 stops35h 25mMultiple Airlines
Deal found 11/20$1,768

Find flights from Sofia to Illinois within your budget

Customize your flight search to find flights from Sofia to Illinois 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

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Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 2/22

6:35 pm-8:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Sat 3/8

9:55 pm-1:50 pm

1 stop31h 55m

$562

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 3/8

12:05 pm-6:45 pm

1 stop14h 40m

Chicago O'Hare Intl

Sat 3/29

6:00 pm-7:05 pm

1 stop18h 05m

$590

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 12/3

6:05 pm-1:55 pm

1 stop27h 50m

Chicago O'Hare Intl

Mon 12/9

3:00 pm-5:10 pm

2 stops18h 10m

$593

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 3/8

12:05 pm-6:45 pm

1 stop14h 40m

Chicago O'Hare Intl

Sat 3/29

6:20 pm-7:05 pm

2 stops17h 45m

$606

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/4

6:05 am-6:25 pm

1 stop20h 20m

Chicago O'Hare Intl

Sat 3/29

11:35 pm-10:35 pm

1 stop15h 00m

$609

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 1/16

6:10 am-8:05 am

2 stops33h 55m

Chicago O'Hare Intl

Wed 1/29

9:25 pm-6:10 pm

1 stop12h 45m

$618

SofiaChicago

SOF - MDW

SOFMDW

Sofia

Thu 1/16

7:00 am-6:14 pm

2 stops19h 14m

Chicago Midway

Wed 1/29

2:08 pm-2:05 pm

2 stops15h 57m

$622

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 12/5

7:10 am-11:59 pm

2 stops24h 49m

Chicago O'Hare Intl

Sat 1/11

11:50 am-1:55 pm

2 stops18h 05m

$624

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/4

6:05 am-7:32 pm

2 stops21h 27m

Chicago O'Hare Intl

Sat 3/29

11:35 am-12:10 pm

2 stops17h 35m

$632

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 1/13

7:00 am-5:50 pm

2 stops18h 50m

Chicago O'Hare Intl

Mon 1/27

1:40 pm-2:05 pm

2 stops16h 25m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 26 results
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Best time to book a flight from Sofia to Illinois

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

Travel insights for flights from Sofia to Illinois

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

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

Currently, September is the cheapest month in which you can book a flight from Sofia to Illinois (average of $232). Flying from Sofia to Illinois in June is currently the most expensive (average of $308). 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 IL?

Find hourly flight availability from Sofia to Illinois. 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.

When flying from Sofia to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois 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 Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated November 20, 2024.
To help decide which airline to fly from Sofia to Illinois, see what other customers have to say about KLM, Lufthansa and Air France. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,350 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Boarding

7.9

Food

7.3

Overall

7.8

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

Comfort

7.7

Crew

8.4

Entertainment

7.2

Boarding

7.9

Food

7.3

Overall

7.8

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

Comfort

7.7

Crew

8.4

Entertainment

7.2

Boarding

7.9

Food

7.3

Overall

7.8

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
805 reviews
KLM
7.8
Good
1,350 reviews

Comfort

7.7

Crew

8.4

Entertainment

7.2

Boarding

7.9

Food

7.3

Overall

7.8

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

Comfort

7.7

Crew

8.4

Entertainment

7.2

Boarding

7.9

Food

7.3

Overall

7.8

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

Comfort

7.7

Crew

8.4

Entertainment

7.2

Boarding

7.9

Food

7.3

Overall

7.8

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 Sofia to Illinois. 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 Illinois?

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

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

    The cheapest airline one-way is Air Serbia, with whom users have recently found tickets for as low as $416. However, be on the lookout for offers from British Airways and KLM, as they are both options that can get you from Sofia to Illinois for a low price.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Sofia to Illinois (average of $232). Flying from Sofia to Illinois in June is currently the most expensive (average of $308). 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 Sofia to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Sofia to Illinois

Discover the top 8 airlines that operate flights from Sofia to Illinois. 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
KLMCheapest$460Average$816FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$536Average$800FlexibilityNo cancel feeOn-time76%
LOTCheapest$548Average$626FlexibilityNo cancel feeOn-time81%
British AirwaysCheapest$551Average$795FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$576Average$784FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$580Average$774FlexibilityNo cancel feeOn-time69%
ITA AirwaysCheapest$631Average$688FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$661Average$722FlexibilityNo cancel feeOn-time77%
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