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O'Hare Intl

$345+ Cheap flights from Sofia (SOF) to O'Hare Intl (ORD)

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — ORD
Oct 13 — Oct 201
Mon 10/13
Mon 10/20
1 adult, Economy
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Cheapflights Tip: The best prices from Sofia to Chicago O'Hare Intl are usually found in November or February, booked 33 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from Sofia to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to O'Hare Intl (ORD). 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 September 13, 2025.

Round-trip from

$636
(Kiwi.com)

One-way from

$345
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$733
From Sofia to Chicago O'Hare Intl
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One-way flight from Sofia to Chicago O'Hare Intl
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Highest demand for flights based on searches. 3% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Sofia to O'Hare Intl

Cheapest flights from Sofia to O'Hare Intl
Explore the most affordable flight options available from Sofia to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Mon 10/276:35 pmSOF - ORD
1 stop33h 25mLOT
Mon 11/39:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 9/13$636
This oojo deal was found by Cheapflights users on 9/12. 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.
Wed 10/82:35 pmSOF - ORD
1 stop13h 05mLOT
Thu 1/89:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 9/12$637
This FlightHub deal was found by Cheapflights users on 9/12. 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 10/155:20 amSOF - ORD
1 stop22h 20mLOT
Wed 10/2910:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 9/12$638
This LOT deal was found by Cheapflights users on 9/12. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/262:35 pmSOF - ORD
1 stop13h 25mLOT
Tue 11/49:55 pmORD - SOF
1 stop11h 55mLOT
Deal found 9/12$639
This LOT deal was found by Cheapflights users on 9/11. 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 LOT is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:35 pmSOF - ORD
1 stop33h 25mLOT
Tue 11/49:55 pmORD - SOF
1 stop31h 55mLOT
Deal found 9/11$641
This KLM deal was found by Cheapflights users on 9/11. 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.
Sat 11/17:00 amSOF - ORD
1 stop15h 20mMultiple Airlines
Sat 11/152:30 pmORD - SOF
2 stops15h 25mMultiple Airlines
Deal found 9/11$643
This KLM deal was found by Cheapflights users on 9/12. 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 10/237:00 amSOF - ORD
1 stop15h 10mMultiple Airlines
Sun 11/25:20 pmORD - SOF
1 stop12h 35mMultiple Airlines
Deal found 9/12$644
This KLM deal was found by Cheapflights users on 9/12. 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 12/177:00 amSOF - ORD
1 stop15h 20mMultiple Airlines
Sat 1/171:30 pmORD - SOF
2 stops16h 25mMultiple Airlines
Deal found 9/12$649
This KLM deal was found by Cheapflights users on 9/11. 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 10/147:00 amSOF - ORD
1 stop15h 10mMultiple Airlines
Fri 11/142:30 pmORD - SOF
2 stops15h 25mMultiple Airlines
Deal found 9/11$650
This British Airways deal was found by Cheapflights users on 9/12. 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.
Sat 11/112:05 pmSOF - ORD
1 stop14h 40mBritish Airways
Sat 11/1511:48 amORD - SOF
2 stops17h 12mBritish Airways
Deal found 9/12$652
This KLM deal was found by Cheapflights users on 9/12. 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 10/247:00 amSOF - ORD
1 stop15h 10mKLM
Tue 11/41:25 pmORD - SOF
2 stops16h 40mKLM
Deal found 9/12$654

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to O'Hare Intl 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 September 13, 2025.
Use the filters below to find and compare flights from Sofia to Chicago O'Hare Intl Airport that are best for you.

Fly from

Sofia

Fly to

O'Hare Intl

Route

Depart

Return

Price

SofiaChicago

SOF - ORD

SOFORD

Sofia

Mon 10/27

6:35 pm-9:00 pm

1 stop33h 25m

Chicago O'Hare Intl

Wed 11/5

9:55 pm-5:50 pm

1 stop11h 55m

$641

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 11/1

7:00 am-3:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Sat 11/15

2:30 pm-1:55 pm

2 stops15h 25m

$643

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 10/25

7:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Sun 11/2

5:20 pm-1:55 pm

1 stop12h 35m

$645

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 12/17

7:00 am-2:20 pm

1 stop15h 20m

Chicago O'Hare Intl

Sat 1/17

1:30 pm-1:55 pm

2 stops16h 25m

$649

SofiaChicago

SOF - ORD

SOFORD

Sofia

Tue 10/14

7:00 am-2:10 pm

1 stop15h 10m

Chicago O'Hare Intl

Fri 11/14

2:30 pm-1:55 pm

2 stops15h 25m

$650

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 10/15

7:00 am-2:40 pm

1 stop15h 40m

Chicago O'Hare Intl

Wed 10/29

1:25 pm-2:05 pm

2 stops17h 40m

$650

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 11/1

12:05 pm-7:45 pm

1 stop14h 40m

Chicago O'Hare Intl

Sat 11/15

11:48 am-1:00 pm

2 stops17h 12m

$652

SofiaChicago

SOF - ORD

SOFORD

Sofia

Wed 1/14

2:35 pm-8:00 pm

1 stop13h 25m

Chicago O'Hare Intl

Thu 4/9

9:40 pm-5:55 pm

2 stops36h 15m

$653

SofiaChicago

SOF - ORD

SOFORD

Sofia

Sat 11/8

4:45 pm-2:45 pm

2 stops30h 00m

$345

SofiaChicago

SOF - ORD

SOFORD

Sofia

Thu 11/6

4:45 pm-3:15 pm

2 stops30h 30m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 15 results
1
2

Best time to book a flight from Sofia to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport

How far ahead should I book a flight from Sofia to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Sofia to O'Hare Intl. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Sofia to Chicago O'Hare Intl Airport, you should look to book at least 33 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Sofia to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Sofia to Chicago O'Hare Intl Airport (average of $245). Flying from Sofia to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 ORD?

Find hourly flight availability from Sofia to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Sofia to Chicago O'Hare Intl Airport at noon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated September 13, 2025.
See what other customers who have flown with LOT, Austrian Airlines, and United Airlines from Sofia to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
LOT
7.6
Good
1,114 reviews

Comfort

7.5

Entertainment

7.0

Overall

7.6

Food

7.2

Crew

8.2

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Enver,Sep 2025

TGD - WAW

We ware in the plane for two hours before takeoff waiting and one hour after takeoff we landed
LOT
7.6
Good
1,114 reviews
LOT
7.6
Good
1,114 reviews

Comfort

7.5

Entertainment

7.0

Overall

7.6

Food

7.2

Crew

8.2

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Enver,Sep 2025

TGD - WAW

We ware in the plane for two hours before takeoff waiting and one hour after takeoff we landed
Austrian Airlines
7.6
Good
850 reviews
LOT
7.6
Good
1,114 reviews

Comfort

7.5

Entertainment

7.0

Overall

7.6

Food

7.2

Crew

8.2

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Enver,Sep 2025

TGD - WAW

We ware in the plane for two hours before takeoff waiting and one hour after takeoff we landed
United Airlines
7.4
Good
8,934 reviews
LOT
7.6
Good
1,114 reviews

Comfort

7.5

Entertainment

7.0

Overall

7.6

Food

7.2

Crew

8.2

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Enver,Sep 2025

TGD - WAW

We ware in the plane for two hours before takeoff waiting and one hour after takeoff we landed
Turkish Airlines
7.3
Good
3,968 reviews
LOT
7.6
Good
1,114 reviews

Comfort

7.5

Entertainment

7.0

Overall

7.6

Food

7.2

Crew

8.2

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Enver,Sep 2025

TGD - WAW

We ware in the plane for two hours before takeoff waiting and one hour after takeoff we landed
Lufthansa
6.8
Okay
7,409 reviews
LOT
7.6
Good
1,114 reviews

Comfort

7.5

Entertainment

7.0

Overall

7.6

Food

7.2

Crew

8.2

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Enver,Sep 2025

TGD - WAW

We ware in the plane for two hours before takeoff waiting and one hour after takeoff we landed

Related info for your journey

Find useful and relevant information for your journey from Sofia to O'Hare Intl. 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 O'Hare Intl?

    Located just 4.2 mi from the city center, Sofia is the airport most travelers will use when flying to Chicago O'Hare Intl from Sofia. Booking flights from Sofia (SOF) to Chicago O'Hare Intl should be relatively easy as there are 0 daily outbound flights to Chicago O'Hare Intl from 7 different airlines.

  • How long is the flight from Sofia to Chicago O'Hare Intl Airport?

    LOT can get you from Sofia to Chicago O'Hare Intl Airport in just under 33h 25m. Your travel time can differ by up to . There are 5194 mi between Sofia and Chicago O'Hare Intl Airport.

  • What are the cheapest airlines flying from Sofia to Chicago O'Hare Intl Airport round-trip?

    Our cheapest airline available from Sofia to Chicago O'Hare Intl Airport is KLM. Our recent data shows that you can find tickets from as low as $460 on this airline. Additional options worth looking into are LOT and Air France, starting at $532 and $560 round-trip. You may be able to fly from Sofia to Chicago O'Hare Intl Airport for 34% less than the average price by searching for these airlines.

  • Can I find deals for flights from Sofia to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Sofia to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sofia to O'Hare Intl?

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

  • Can I find deals for business class flights from Sofia to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Sofia to O'Hare Intl 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 O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Sofia to Chicago O'Hare Intl Airport (average of $245). Flying from Sofia to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Beloit
Racine
Rockford
Orland Park
Oak Brook
Downers Grove
Naperville
Elk Grove Village
Evanston
Merrillville
Bridgeview
Warrenville

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sofia to O'Hare Intl

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

Top 7 airlines flying from Sofia to O'Hare Intl

Discover the top 7 airlines that operate flights from Sofia to O'Hare Intl. 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 September 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$460Average$728FlexibilityNo cancel feeOn-time75%
LOTCheapest$532Average$632FlexibilityNo cancel feeOn-time81%
Air FranceCheapest$560Average$672FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$576Average$761FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$603Average$702FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$612Average$759FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$625Average$709FlexibilityNo cancel feeOn-time77%

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