HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bulgaria

$250+ Cheap flights from O'Hare Intl (ORD) to Bulgaria

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOF
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to Bulgaria with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from O'Hare Intl to Bulgaria

Keep the following information in mind while searching for O'Hare Intl to Bulgaria flight deals. Data was last updated July 29, 2025.

Round-trip from

$560
(Kiwi.com)

One-way from

$250
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$884
From Chicago O'Hare Intl to Bulgaria
Search Deals
One-way flight from Chicago O'Hare Intl to Bulgaria
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($264 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from O'Hare Intl to Bulgaria

Cheapest flights from O'Hare Intl to Bulgaria
Explore the most affordable flight options available from O'Hare Intl to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sun 8/319:40 pmORD - SOF
1 stop13h 00mMultiple Airlines
Sun 9/74:05 pmSOF - ORD
1 stop29h 15mMultiple Airlines
Deal found 7/28$560
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Sun 8/3110:00 amORD - SOF
2 stops18h 00mUnited Airlines
Mon 9/81:50 pmSOF - ORD
1 stop29h 10mUnited Airlines
Deal found 7/28$561
This Turkish Airlines deal was found by Cheapflights users on 7/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2511:45 pmORD - SOF
1 stop24h 50mTurkish Airlines
Tue 9/233:35 pmSOF - ORD
1 stop26h 05mTurkish Airlines
Deal found 7/29$563
This Turkish Airlines deal was found by Cheapflights users on 7/29. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1811:45 pmORD - VAR
1 stop25h 00mTurkish Airlines
Wed 9/310:10 pmVAR - ORD
1 stop19h 30mTurkish Airlines
Deal found 7/29$570
This Lufthansa deal was found by Cheapflights users on 7/28. 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.
Tue 8/193:35 pmORD - SOF
1 stop12h 25mLufthansa
Tue 9/27:25 pmSOF - ORD
1 stop25h 05mLufthansa
Deal found 7/28$573
This Booking.com deal was found by Cheapflights users on 7/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:40 amORD - SOF
2 stops25h 10mAir Canada
Fri 9/126:15 amSOF - ORD
2 stops21h 56mAir Canada
Deal found 7/27$576
This SWISS deal was found by Cheapflights users on 7/28. 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 8/222:20 pmORD - SOF
1 stop11h 45mSWISS
Mon 9/83:30 pmSOF - ORD
1 stop32h 25mSWISS
Deal found 7/28$577
This Austrian Airlines deal was found by Cheapflights users on 7/28. 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 8/184:20 pmORD - SOF
1 stop23h 35mAustrian Airlines
Thu 9/46:55 pmSOF - ORD
2 stops31h 30mAustrian Airlines
Deal found 7/28$579
This oojo deal was found by Cheapflights users on 7/27. 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.
Mon 8/182:20 pmORD - VAR
1 stop21h 50mSWISS
Tue 8/269:00 pmVAR - ORD
1 stop23h 10mSWISS
Deal found 7/27$582
This Lufthansa deal was found by Cheapflights users on 7/27. 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.
Tue 8/199:40 pmORD - VAR
1 stop15h 05mLufthansa
Wed 8/279:30 pmVAR - ORD
1 stop28h 45mLufthansa
Deal found 7/27$599
This FlightHub deal was found by Cheapflights users on 7/27. 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.
Tue 8/193:35 pmORD - VAR
1 stop21h 10mMultiple Airlines
Tue 8/269:00 pmVAR - ORD
1 stop23h 10mMultiple Airlines
Deal found 7/27$604
This British Airways deal was found by Cheapflights users on 7/28. 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.
Sun 12/285:10 pmORD - SOF
1 stop15h 10mBritish Airways
Mon 3/25:25 pmSOF - ORD
2 stops34h 44mBritish Airways
Deal found 7/28$604

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to Bulgaria 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 July 29, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Bulgaria that are best for you.

Fly from

O'Hare Intl

Fly to

Bulgaria

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 8/31

9:40 pm-6:40 pm

1 stop13h 00m

Sofia

Sun 9/7

4:05 pm-1:20 pm

1 stop29h 15m

$560

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Sun 8/31

10:00 am-12:00 pm

2 stops18h 00m

Sofia

Mon 9/8

1:50 pm-11:00 am

1 stop29h 10m

$561

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 8/25

11:45 pm-8:35 am

1 stop24h 50m

Sofia

Tue 9/23

3:35 pm-9:40 am

1 stop26h 05m

$563

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Mon 8/18

11:45 pm-8:45 am

1 stop25h 00m

Varna

Wed 9/3

10:10 pm-9:40 am

1 stop19h 30m

$570

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Tue 8/19

3:35 pm-12:00 pm

1 stop12h 25m

Sofia

Tue 9/2

7:25 pm-12:30 pm

1 stop25h 05m

$573

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Wed 8/27

8:40 am-5:50 pm

2 stops25h 10m

Sofia

Fri 9/12

6:15 am-8:11 pm

2 stops21h 56m

$576

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Fri 8/22

2:20 pm-10:05 am

1 stop11h 45m

Sofia

Mon 9/8

3:30 pm-3:55 pm

1 stop32h 25m

$577

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

Mon 8/18

4:20 pm-11:55 pm

1 stop23h 35m

Sofia

Thu 9/4

6:55 pm-6:25 pm

2 stops31h 30m

$579

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Mon 8/18

2:20 pm-8:10 pm

1 stop21h 50m

Varna

Tue 8/26

9:00 pm-12:10 pm

1 stop23h 10m

$582

ChicagoVarna

ORD - VAR

ORDVAR

Chicago O'Hare Intl

Tue 8/19

9:40 pm-8:45 pm

1 stop15h 05m

Varna

Wed 8/27

9:30 pm-6:15 pm

1 stop28h 45m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 26 results
1
2
3

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

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

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

Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bulgaria (average of $632). Flying from Chicago O'Hare Intl Airport to Bulgaria in June is currently the most expensive (average of $1,187). 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 ORD to BG?

Find hourly flight availability from O'Hare Intl to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

When flying from Chicago O'Hare Intl Airport to Bulgaria, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated July 29, 2025.
Read reviews from past customers who have flown KLM, LOT, and Austrian Airlines from Chicago O'Hare Intl Airport to Bulgaria. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,383 reviews

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,383 reviews
KLM
7.8
Good
1,383 reviews

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
LOT
7.6
Good
1,105 reviews
KLM
7.8
Good
1,383 reviews

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Austrian Airlines
7.6
Good
821 reviews
KLM
7.8
Good
1,383 reviews

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
SWISS
7.5
Good
1,683 reviews
KLM
7.8
Good
1,383 reviews

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,899 reviews
KLM
7.8
Good
1,383 reviews

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Bulgaria one-way?

    $334 is the cheapest one-way deal found within the past few days, from ITA Airways. You may also be able to find cheap deals on British Airways and SWISS, with prices starting from $348 and $354, respectively.

  • What are the most popular routes from Chicago O'Hare Intl Airport to Bulgaria?

    The most popular flight routes from Chicago O'Hare Intl Airport to Bulgaria are Chicago O'Hare Intl - Sofia, Chicago O'Hare Intl - Varna and Chicago O'Hare Intl - Bourgas.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Bulgaria (average of $632). Flying from Chicago O'Hare Intl Airport to Bulgaria in June is currently the most expensive (average of $1,187). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for O'Hare Intl to Bulgaria

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Madrid flights
O'Hare Intl to Dublin flights
O'Hare Intl to Athens flights
O'Hare Intl to Istanbul flights
O'Hare Intl to Orly flights
O'Hare Intl to Gatwick flights
O'Hare Intl to Frederic Chopin flights
O'Hare Intl to Frankfurt flights
O'Hare Intl to London City flights
O'Hare Intl to Barcelona-El Prat flights
O'Hare Intl to Munich flights
Midway to Heathrow flights
O'Hare Intl to Amsterdam flights
O'Hare Intl to Edinburgh flights
O'Hare Intl to Zurich flights
Midway to Charles de Gaulle flights
O'Hare Intl to Stansted flights
Midway to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Malpensa flights
O'Hare Intl to Bruxelles-National flights
O'Hare Intl to Keflavik Intl flights
O'Hare Intl to Luton flights
O'Hare Intl to Krakow flights
O'Hare Intl to Vienna flights
O'Hare Intl to Lisbon flights
Midway to Madrid flights
O'Hare Intl to Sabiha Gokcen flights
O'Hare Intl to Copenhagen flights
Midway to Dublin flights
Midway to Athens flights
O'Hare Intl to Beauvais-Tille flights
Midway to Frederic Chopin flights
O'Hare Intl to Linate flights
O'Hare Intl to Otopeni Intl flights
O'Hare Intl to Sofia flights
Midway to Barcelona-El Prat flights
Midway to Frankfurt flights
Midway to Lisbon flights
O'Hare Intl to Naples flights
O'Hare Intl to Berlin flights
O'Hare Intl to Belgrade flights
O'Hare Intl to Vicenza flights
O'Hare Intl to Oslo Gardermoen flights
Midway to Keflavik Intl flights
O'Hare Intl to Glasgow Intl flights
Midway to Amsterdam flights
O'Hare Intl to Prague flights

Top 10 airlines flying from O'Hare Intl to Bulgaria

Discover the top 10 airlines that operate flights from O'Hare Intl to Bulgaria. 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$494Average$929FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$498Average$608FlexibilityNo cancel feeOn-time77%
KLMCheapest$533Average$739FlexibilityNo cancel feeOn-time75%
LOTCheapest$571Average$870FlexibilityNo cancel feeOn-time81%
LufthansaCheapest$588Average$1,080FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$588Average$877FlexibilityNo cancel feeOn-time78%
SWISSCheapest$596Average$847FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$601Average$787FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$613Average$778FlexibilityNo cancel feeOn-time70%
Air SerbiaCheapest$652Average$1,020FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.