$326 Find Cheap Flights from Bulgaria to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to O'Hare Intl departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
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Cheap Flights from Bulgaria to O'Hare Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bulgaria to O'Hare Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Sun, Dec 14 - Tue, Dec 30
LOT Logo
2:35 pm - 7:55 pmSOF-ORD
37h 20m2 stops
LOT Logo
9:55 pm - 5:50 pmORD-SOF
11h 55m1 stop
$647LOT
Find Deal
Tue, Nov 18 - Sun, Mar 1
LOT Logo
6:35 pm - 8:00 pmSOF-ORD
33h 25m1 stop
LOT Logo
9:55 pm - 5:50 pmORD-SOF
35h 55m2 stops
$648LOT
Find Deal
Wed, Nov 19 - Wed, Nov 26
Turkish Airlines Logo
9:35 am - 10:05 amSOF-ORD
32h 30m1 stop
Turkish Airlines Logo
11:50 am - 3:10 pmORD-SOF
19h 20m1 stop
$650Turkish Airlines
Find Deal
Tue, Nov 11 - Thu, Nov 13
Turkish Airlines Logo
9:35 am - 6:25 pmSOF-ORD
16h 50m1 stop
Turkish Airlines Logo
11:50 am - 3:10 pmORD-SOF
19h 20m1 stop
$670Turkish Airlines
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Fri, Nov 21 - Thu, Apr 9
Lufthansa Logo
6:10 am - 8:05 pmSOF-ORD
21h 55m1 stop
Lufthansa Logo
9:40 pm - 11:00 pmORD-SOF
17h 20m1 stop
$719Lufthansa
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Thu, Nov 6 - Sat, Aug 1
Lufthansa Logo
6:00 am - 1:10 pmSOF-ORD
15h 10m1 stop
Lufthansa Logo
10:30 pm - 10:50 pmORD-SOF
16h 20m1 stop
$720Lufthansa
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Thu, Nov 13 - Tue, Mar 3
United Airlines Logo
6:00 am - 8:00 pmSOF-ORD
22h 00m2 stops
United Airlines Logo
9:50 pm - 10:45 pmORD-SOF
16h 55m1 stop
$722United Airlines
Find Deal
Sat, Nov 15 - Thu, Feb 26
United Airlines Logo
6:25 am - 3:20 pmSOF-ORD
16h 55m1 stop
United Airlines Logo
3:20 pm - 1:50 pmORD-SOF
14h 30m1 stop
$723United Airlines
Find Deal
Mon, Nov 17 - Fri, Feb 27
Austrian Airlines Logo
12:35 pm - 6:30 pmSOF-ORD
37h 55m2 stops
Austrian Airlines Logo
1:00 pm - 5:05 pmORD-SOF
20h 05m2 stops
$744Austrian Airlines
Find Deal
Sun, Nov 16 - Sun, Mar 1
Austrian Airlines Logo
12:35 pm - 6:30 pmSOF-ORD
37h 55m2 stops
Austrian Airlines Logo
1:00 pm - 11:55 pmORD-SOF
26h 55m2 stops
$745Austrian Airlines
Find Deal

Everything you should know

When to travel
November
Cheapest • 7% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$647
Overall average: $703
LOT
Sun 12/14Tue 12/30
SOF - ORD • 2 stops
Cheapest one-way
$326
Typical prices: $574-$682
Multiple Airlines
Wed 12/10
SOF - ORD • 2 stops
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We hope you love your trip to O'Hare Intl!
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 month to fly to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Chicago O'Hare Intl Airport is November, where tickets cost $668 on average for one-way flights. On the other hand, the most expensive months are October and August, where the average cost of tickets from Bulgaria is $778 and $769 respectively. For return trips, the best month to travel is November with an average price of $668.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 41 days before departure.

Good to know

Low seasonNovember
Cheapest flight$326
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Sofia to Chicago O'Hare Airport

FAQs - booking Chicago O'Hare Airport flights

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

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

  • What is the cheapest day to fly to Chicago?

    Based on KAYAK data, the cheapest day to fly to Chicago is Wednesday where tickets can be as cheap as $691. On the other hand, the most expensive day to fly is Sunday, where prices are $782 on average.

  • How does KAYAK find such low prices on flights to Chicago O'Hare Airport?

    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 O'Hare Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport 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 O'Hare Airport?

    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 O'Hare Airport 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 O'Hare Airport?

    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 O'Hare Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Chicago O'Hare Intl Airport?

    The cheapest time of day to fly to Chicago O'Hare Intl Airport is generally in the afternoon, when flights cost $657 on average. The most expensive time of day to fly to Chicago O'Hare Intl Airport is generally in the morning, which is peak travel time and where the average cost of a ticket is $779.

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

    Each week there are around 9,729 direct flights from within Bulgaria to Chicago O'Hare Intl Airport. The most common day for departures is Saturday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Chicago O'Hare Airport

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

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

 
See real verified KAYAK customer reviews for airlines flying to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Bulgaria to Chicago. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
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.
7.6
LOTOverall score based on 1134 reviews
6.9Entertainment
8.2Crew
7.1Food
7.6Boarding
7.5Comfort
Airline reviews

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.

8.0 ExcellentMatthew, Oct 2025WAW - ORD
Read more LOT reviews

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.

Crew was excellent. Business class was poor on the short flight and mediocre at best on the international flight.

Very poor. Seats like economy class, food unbeatable, no charging, no entertainment, no WiFi, boarding by bus - no justification for calling and pricing this as business class

The flight itself was pleasant and on time. Crew was very good. However, breakfast food was barely acceptable. Unfortunately this satisfies the recent industry standards. I asked for a sandwich with ham (another choice was cheese), but received a sandwich with roast beef.

During the flight, the fleas biting me in the plane.

Delay rushed to the next plane and bags didn’t arrive in chicago

Agents helping disable person doesnt know connections to Poland and after 9 agents helping and 2hours ,we made it to proper terminal. Polish Dreamliner its Polish nightmare liner with so narrow seats and no room under front seat for bag and feet,in economy class.To upgrade, to higher standart cost an arm and leg ,even there are empty seats No good experience overall

Checking in took very long for whatever reason. Flight comfort these days is always poor so… Crew was great thought!

The seats are small and the movie selection was disappointing. However, the food was excellent and the cabin crew was attentive and kind.

Great! They got my vegetarian meal right, flight was comfortable, they helped store my heavy luggage. Pleasant crew and flight staff.

I did wish they would give us the entire little bottle Bailey's instead of just have 1/2 bottle at a time

My layover in Vienna was supposed to be 35 minutes but because my flight was canceled I had to wait in the airport for an additional 8 hours.

Very limited legroom in a 10 hour flight.very old plane.

The flight was delayed for 30 minutes with no apparent reason. There is no entertainment at all, and no USB or electric outlets for charging your phone or tablet.

They had me unpack a handbag 2 lbs overweight into another handbag 8 lbs underweight for a Bible.

My flight was canceled and even though I paid אם KAYAK you didn't even answer me and obviously didn't refund my money. I will never buy a ticket through you again.

Accessibility serious problems in Viena airport making it seriousely difficult in in-between gates and boarding travel. Pretens of breakfast and service care in the economy pathetic.

One thing I really liked about Austrian Airlines was that the flight attendants were very kind, and the in-flight entertainment offered many choices. One thing that could be improved is the meal service, since only a vegetarian option was offered — it would be better to have at least two choices

One thing I really liked about Austrian Airlines was that the flight attendants were very kind, and the in-flight entertainment offered many choices. One thing that could be improved is the meal service, since only a vegetarian option was offered — it would be better to have at least two choices.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Excellent all round, first time flying United. App is very helpful.

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Could have said yes to a glass of wine 🍷 instead of saying we'll come around in a couple of hours

The best airline for international travel in terms of value you get in business class (service/cost)

I liked the overall flight experience. However, Turkish officials could do a better job at guiding non-Turkish speakers to their connecting flight gates in such a huge & vast airport.

Very small and cramped aisles and seats. Food was poor but the fresh hot roll and hummus was good. No cans of soda given but they had small bottles of water. Crew was nice and pleasant and kept bathroom clean.

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

Small seat space for 13 hours flight, they charged for baggage , very bad quality of food,

I was sitting almost in the back, the seats are very tight and there’s no legroom, it’s uncomfortable for a long distance

Absolute worst airline. Charged us $720 to check 4 bags (2 of which were carry-on). Entertainment systems didnt work. And on a 12 hour flight they served 2 meals and never once came around outside of those 2 meals with a beverage or cup of water. Will never fly them again.

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.

Amazing trip! No delays, no broken or lost luggage, and amazing food.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Food was poor quality and the screens for entertainment didn’t work properly

It was a short flight, everything was good with it.

I darted through the Frankfurt airport to make my connecting flight. I asked if it was a possibility to upgrade and the agent did. This was the kindest gesture and it made up for the previous delayed flight and distress/anxiety of anticipating that Zi was going to miss my Frankfurt-Chicago connection. I cannot express my gratitude for the upgrade.. I am 5feet 10 inches do the leg space was amazing.

I meant this flight was not good, the one from Tirana to Frankfurt was better!

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

I wish seats were not reclinable. It's so claustrophobic when the person in front of you spends most of a nine hour flight leaned all the way back. The crew was really nice though and the dinner (red Thai curry) was pretty compelling.

Our flights were severely delayed, then canceled and we had to fly out next day with no sleep accommodation help. This led to our baggage being lost and the service reps after baggage couldn’t be bothered to help. They kept sending us to different counters when we were at the right counter to begin with. The only saving grace was the angel woman supervisor with blond hair who helped us put in a missing baggage claim.

Traveling to a place near O'Hare Intl?

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

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

Information on the airport you'll fly into in Chicago

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