$358 Find Cheap Flights from Bulgaria to Chicago - Compare and Save

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Cheap Flights from Bulgaria to O'Hare Intl

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bulgaria to O'Hare Intl

Thu, Dec 10 - Sun, Mar 7
Multiple Airlines Logo
9:50 pm - 5:20 pmSOF  Sofia-ORD Chicago O'Hare Intl
27h 30m2 stops Dublin Reykjavik Keflavik Intl
Multiple Airlines Logo
9:50 pm - 6:20 pmORD  Chicago O'Hare Intl-SOF Sofia
12h 30m1 stop Munich Franz Josef Strauss
$800Multiple Airlines
Tue, Dec 15 - Wed, Dec 30
Turkish Airlines Logo
4:00 pm - 10:00 amSOF  Sofia-ORD Chicago O'Hare Intl
26h 00m1 stop Istanbul
Turkish Airlines Logo
8:15 pm - 11:05 amORD  Chicago O'Hare Intl-SOF Sofia
30h 50m1 stop Istanbul
$801Turkish Airlines
Sat, Dec 12 - Wed, Dec 30
Multiple Airlines Logo
10:10 pm - 3:30 pmSOF  Sofia-ORD Chicago O'Hare Intl
25h 20m2 stops Barcelona-El Prat Lisbon Humberto Delgado
Multiple Airlines Logo
4:20 pm - 1:25 pmORD  Chicago O'Hare Intl-SOF Sofia
13h 05m1 stop Frankfurt am Main
$801Multiple Airlines
Mon, Dec 14 - Sat, Mar 6
Turkish Airlines Logo
9:45 pm - 6:20 pmSOF  Sofia-ORD Chicago O'Hare Intl
28h 35m1 stop Istanbul
Turkish Airlines Logo
8:15 pm - 3:10 pmORD  Chicago O'Hare Intl-SOF Sofia
34h 55m1 stop Istanbul
$804Turkish Airlines
Wed, Sep 9 - Wed, Sep 30
LOT Logo
2:35 pm - 3:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
32h 35m1 stop Warsaw Frederic Chopin
LOT Logo
9:50 pm - 6:00 pmORD  Chicago O'Hare Intl-SOF Sofia
12h 10m1 stop Warsaw Frederic Chopin
$807LOT
Tue, Sep 1 - Sat, Oct 31
LOT Logo
6:45 pm - 3:10 pmSOF  Sofia-ORD Chicago O'Hare Intl
28h 25m2 stops Warsaw Frederic Chopin Krakow J. Paul II Balice
LOT Logo
10:50 pm - 5:55 pmORD  Chicago O'Hare Intl-SOF Sofia
12h 05m1 stop Warsaw Frederic Chopin
$809LOT
Fri, Sep 4 - Sat, Oct 31
Lufthansa Logo
6:20 am - 7:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
21h 35m1 stop Frankfurt am Main
Lufthansa Logo
10:50 pm - 10:55 pmORD  Chicago O'Hare Intl-SOF Sofia
17h 05m1 stop Munich Franz Josef Strauss
$842Lufthansa
Fri, Sep 4 - Thu, Oct 29
Lufthansa Logo
6:20 am - 7:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
21h 35m1 stop Frankfurt am Main
Lufthansa Logo
10:50 pm - 10:55 pmORD  Chicago O'Hare Intl-SOF Sofia
17h 05m1 stop Munich Franz Josef Strauss
$843Lufthansa
Fri, Oct 2 - Thu, Oct 15
United Airlines Logo
6:20 am - 11:00 amSOF  Sofia-ORD Chicago O'Hare Intl
12h 40m1 stop Frankfurt am Main
United Airlines Logo
3:35 pm - 12:10 pmORD  Chicago O'Hare Intl-SOF Sofia
12h 35m1 stop Munich Franz Josef Strauss
$859United Airlines
Thu, Sep 17 - Sat, Oct 3
United Airlines Logo
2:10 pm - 7:55 pmSOF  Sofia-ORD Chicago O'Hare Intl
13h 45m1 stop Frankfurt am Main
United Airlines Logo
10:30 pm - 10:50 pmORD  Chicago O'Hare Intl-SOF Sofia
16h 20m1 stop Frankfurt am Main
$860United Airlines
Booking Insights

KAYAK's insights & trends for flights to O'Hare Intl

Get data-powered insights and trends for flights to O'Hare Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Chicago?

In the last 5 days, the cheapest flight deal to Chicago was found on the route from Sofia, at $800 return. The most popular connection is from Varna to Chicago and KAYAK users have found round-trip deals for as low as $877 in the last 5 days.

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

The cheapest month for flights to Chicago O'Hare Intl Airport is November, where tickets cost $707 on average for return flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from Bulgaria is $900 and $865 respectively. For one-way flights, the best month to travel is April with an average price of $536.

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

To get a below average price, you should book around 3 weeks before departure, which saves you about 1% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low season

November

Cheapest flight

$358
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Sofia to Chicago

FAQs - booking Chicago flights

  • What is the cheapest flight to Chicago?

    In the last 5 days, the cheapest flight deal to Chicago was found on the route from Sofia, at $800 return. The most popular connection is from Varna to Chicago and KAYAK users have found round-trip deals for as low as $877 in the last 5 days.

  • How far is Chicago O'Hare Intl Airport from central Chicago?

    Central Chicago is 16 miles away from Chicago O'Hare Intl Airport.

  • How does KAYAK find such low prices on flights to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Chicago O'Hare Intl Airport are there each week?

    Each week there are around 29,223 direct flights from within Bulgaria to Chicago O'Hare Intl Airport. The most common day for departures is Sunday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Chicago

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Chicago flight deals.

Reviews of the top 5 airlines serving from Bulgaria to O'Hare Intl

 
Need help choosing which airline to fly with to O'Hare Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1560 reviews
7.8Boarding
8.4Crew
7.3Food
7.2Entertainment
7.7Comfort
Airline reviews

Other than the airline changing my aisle seat to a middle row, all else went well.

8.0 ExcellentDAVID, Aug 2026
Read more KLM reviews

Other than the airline changing my aisle seat to a middle row, all else went well.

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

Flight lead was a gentleman with silver hair and he went out of his way to shake hands and interact with each passenger seated in business class. A medical emergency took place during our flight and he handled it with perfect poise and professionalism. He was gracious and confidently competent. Just what you want from a leader,

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

It was operated by Delta. Boarding took a long time. How difficult can it be? Overall decent trip. Liked the Salt Lake City airport. Better option than Chicago for transfers.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

I have flown with LOT several times and regret it every time; however, they are the only airline that offers the direct flights I need. Boarding was awful. I was alone with 3 children, including an infant, and we were forced to stand in buses packed like sardines. Then, for such a large flight, there was not even a gangway. I was expected to carry a baby, a carseat, and luggage by myself up the dangerous steps into the plane while the crew RUSHED me. The crew was very curt, cold, and inattentive. No one offered any assistance or sympathy to me alone with kids. There was no ventilation or AC in the plane.

My ONLY complaint with LOT was the lack of WiFi and the food in business class… still, I use them because they have great connections to Chicago and they fly the 787 - which I think is a great wide body jet. Well… now LOT has WiFi (good satellite speeds) and AMAZING food. LOT now is giving Turkish Airlines a big big run for the money. And they consistently have less expensive business class. I am a very happy customer!

Issue with boarding, group of passengers on a religious trip coming back to NYC kept trying to change seats, even standing when the plane was pushing back. Crew/Pilot kept very good composure, some passengers got aggravated and started venting out loud but this group created a serious security risk. Crew/Pilot should've been more stringent and called in security or remove them from the flight.

The seat was paid for but given for some different person .

Krakow airport is very disorganized. nice seats. friendly crew. long legs had screens. short leg did not

Flight was delayed for a hour from Warsaw, not sure why. When we landed in Chicago, plane was still on the runway for about half a hour. Took a while to get off.

No WiFi and ok comfort in business class. Home safe I guess that’s all that really matters.

I would like to be able to choose the seat before the flight without paying extra money. Family members should not to be separated from each other.

Flight was delayed by a hour could have been better addressed. Flight was fine with great service by the flight attendants

All good. Didn’t get the seats I booked online. Luckily, copassanger cooperated! Mistake- I failed to verify connecting flight seats details at Mumbai. Staff at Mumbai airport to be blamed equally!

Bussing in a major flight is idiotic. Cabin was too warm. Food was bland and felt old

Horrible service at the baggage claim. Stuck on plane for an hour due to taxing and no gate.

I really would like it if they provided at least some limited free wi-fi.

Excellent food and service on my international flight. Most notable is the food provided by Turkish even for coach passengers is very good.

Food is very turkish. No regard for other natinalities taste and preference. The entertainment can be improved- it was the same menu on 10/8/25 and 10/25/25. The boarding is the worst in the airline industry- I suggest you ask your staff to and watch how other airlines do it.

We couldn’t fly to Chicago on our booked flight. The flight was overbooked.

Took forever to board. They made announcements without the loudspeaker and since the waiting room was full of screaming kids, no one could hear what they were saying. The business class sleeper seats were designed for tall skinny people. When partially reclined there was nowhere to rest my feet because they did not reach the footrest. and when fully reclined there wasn't room at my sides for my arms. Definitely one of the worst sleeper seats I have ever had.

About an hour delay but we made it to Chicago. I feel that the smaller connecting flights are the ones that cause the delays on the bigger planes that fly international.

One of the best flights I have been on in a while.

Here's a sample answer: "Honestly, I was really impressed with Turkish Airlines, but if I had to suggest one area for improvement, it would be: - *More efficient boarding process*: I noticed that boarding took a bit longer than expected, which might be frustrating for passengers with tight connections.

ok, butt flght was delyed for 2,5h from Frankfurt, and next Flight to Columbuse same

Flight was great. Almost miss my connecting flight due to late departure from Haneda. Had to run all through airport in Chicago to make the flight. Experience was great for 1st time flyers using ANA Airlines.

Like the fact that the boarding was expedited. But the delay and chaos around the onboarding was not appreciated.

Seats are complete BS for 10 hrs. The guy at counter canceled our return flight from europe. Lufthansa on the way back made United look like a trailer park gathering. If given the opportunity, I will never fly united again. Lufthansa seats werent much better to be fair but the service was a 10 out of 10. Incant express how difficult umited made my trip.

It was a great experience to fly with ANA, the sit is very comfortable.

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

I’m an EP on AA every year for more than a decade but this was a very pleasant and surprising experience. Clean and sizable plane for HOU to CHI. 5 row first class. And excellent food in first class the steak option was really good. Your flight attendants even better. Seat 5A

Gluten free snack options and meals that offer both gluten free and dairy free.

Not a bad flight but a long delay boarding and taking off due to the pilot not arriving on time.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

the blanket was great and pillow helped. really need a toothpick packed with meals

Very comfortable plane. The food was very good (for airplane food). The crew was great

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Everything could have been better. What needed to be wrong with United went wrong

It was good. The seats in economy weren’t bad

Very good. Comfortable and I felt well taken care of from start to finish

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

Traveling to a place near O'Hare Intl?

Book flights to O'Hare Intl if you plan to visit one of these locations
Gurnee
Merrillville
South Haven
Oak Brook
Saint Joseph
Tinley Park
Hammond
Elk Grove Village
Des Plaines
Hoffman Estates
South Holland
Portage
Oakbrook Terrace
Willowbrook
Lansing
Delavan
Alsip
Northbrook
Lisle
Valparaiso

Everything you need to know for your flight to O'Hare Intl

Information on the airport you'll fly into in Chicago