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$537 Find cheap flights from Bulgaria to Chicago O'Hare Airport

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to O'Hare Intl departing on 10/10. 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
0 bags
jue. 6/6
jue. 6/13

Search hundreds of travel sites at once for deals on flights to Chicago O'Hare Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
These are the airlines KAYAK users have selected most often from within our search results for flights to Chicago
In the last 7 days travelers have searched 43,707,506 times on KAYAK, and here is why:

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Flights to O'Hare Intl - Travel Insights & Trends

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 day to fly to Chicago?

The average price of all flights to Chicago O'Hare Intl Airport clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Chicago is Wednesday where tickets can be as cheap as $682. On the other hand, the most expensive day to fly is Monday, where prices are $767 on average.

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 $592 on average for one-way flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Bulgaria is $785 and $785 respectively. For return trips, the best month to travel is November with an average price of $592.

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

The average price for all flights to Chicago O'Hare Intl Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Chicago O'Hare Intl Airport is generally in the evening, when flights cost $656 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 $761.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure 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 average of all the values for each month.
To get a below average price, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 87 days before departure.

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

The duration of your flight to Chicago depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Chicago on KAYAK are from Burgas, which takes 13h 25m, Varna, which takes 14h 10m, and Sofia, which takes 15h 57m.

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

There are around 1,507 direct flights from within Bulgaria to Chicago O'Hare Intl Airport every day. Most flights depart in the morning, with 6:00 am the most common departure time and 52% of flights departing in the morning.

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

Each week there are around 10,544 direct flights from within Bulgaria to Chicago O'Hare Intl Airport. The most common day for departures is Thursday, with 15% of flights taking off on this day.

Good to know

Low season

October

High season

August

Cheapest flight

$537
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Sofia to Chicago O'Hare Airport

FAQs - booking Chicago O'Hare Airport flights

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

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

  • 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.

  • Which airline offers the most flights to Chicago O'Hare Intl Airport?

    Of the 12 airlines that fly to Chicago O'Hare Intl Airport, United Airlines offers the most flights, with around 5,246 per week, followed by American Airlines with 4,066 flights per week.

See more FAQs

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.

Prefer to fly non-stop to Chicago O'Hare Intl?

Find which airlines fly direct to O'Hare Intl, which days they fly and book direct flights.

Nonstop departures

Bulgaria to Chicago O'Hare Intl

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights

Nonstop returns

Chicago O'Hare Intl to Bulgaria

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights
See more direct flights

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
Austrian AirlinesOverall score based on 1065 reviews
7.4Comfort
7.6Boarding
6.9Entertainment
8.1Crew
6.8Food
Airline reviews

Schedule and on time departure and arrival were great. The crew was good, but a change in aircraft bumped many of us from our expected seats. It was a crowded flight, but the cabin crew did their best to keep things under control.

10.0 ExcellentCraig, Apr 2024VIE - EBL
Read more about Austrian Airlines reviews

Schedule and on time departure and arrival were great. The crew was good, but a change in aircraft bumped many of us from our expected seats. It was a crowded flight, but the cabin crew did their best to keep things under control.

From all the segments I flew it was the only one I did not get the option to choose ni seat, I did not get the quality of seat I had paid for. Crew was nice, airplane was clean, but no food, only water and a small courtesy chocolate. Everything else you had to pay for.

Austrian airline they cancel my fight , and the couldn’t give me flight , they said only available flight 4th and after , I sacked for refund, even from you KYAK , and tell now no any refund , because what happened I lost more money because I have to stay in hotel and then I buy new ticket

Management and staff att viena wasn’t professional,and they are not good by how to communicate and solve the problem, I was shocked , as I know Austrian airlines was amusing Thank you

I bought the ticket a month before my flight but checked in couple hours before my flight and had to wait seat assignment just before take off. On top of that there was not enough room in the overhead bin for my luggage.

The baggage arrived damaged and i spent EUR 300 on the baggage a month ago. No responsibility from airline or the handles.

Tight connection from Austrian Airlines made this challenging. Our luggage did not make it, delivered the next day at noon. Flight itself was very full, not especially comfortable.

The flight was late. We accommodated other missed flights, and the plane was full of people, without space to store carry-on luggage. They lost our checked luggage for the entire flight and delivered it after two days.

There were a number of passengers scheduled to transfer to the flight from Vienna to Warsaw. None of them made it because the crew failed to assist them in getting to the gate for the Warsaw bound flight in time. It could have been done very easily with proper assistance.

Flight attendants were awful, very rude and inconsiderate for mothers with small infants traveling.

Movie selection was ok, but could be better. Would like to see greater selection of newer movies.

Loved the check-in experience. Very friendly staff and not crowded. I did wind up with a middle-middle seat, which was quite uncomfortable. Always appreciate the very professional staff on TAL.

Paying for reserved seats and never received the seats I paid for !! Just fake and a surprise out of their " box "

Turkish airline always good Only Turkish representatives at the gave need to be more helpfull to any staff who traveling on Turkish airline . One situation happened Ist to jfk on Feb 29 TK3 had seats I asked them to transfer me to tk3 because Feb 29 tk1 was oversold and they advise me that I might not make it for tk1 I asked them to transfer me to tk3 and they say no they can’t do it I been telling them you know that I don’t have a chance for tk 1 why would you let plane go with some empty seats on tk3 if you can transfer me to tk3 and have less staff on tk1 and still told me no I waited for tk1 9 hours and only last minute I got seat on tk1 It was not easy situation but I am glad I made it home Thank you Turkish Airline One more suggestion for Turkish Airline you need to make a FIRST CLASS cabin it would be so cool 🆒 Good luck all the best See you more

First class payment but wife’s seat broken, would recline but not lay flat. On previous flight, delays and ground crew malfunctions connecting jetway made us miss flight to Houston. I asked twice for a cart to assist us getting across the massive Istanbul Airport, but was denied. We are both over 70.

My flight had two legs. When checking in at the first leg the agent offering for a deal to upgrade the leg to first class for $199. He then claimed I would be able to upgrade the second leg once I got to the next airport. I declined and when I inquired about upgrading at the second airport, the cost was $1,300. I also had an issue at the airport lounge. I am allowed one guest in the lounge. My friend came in the lounge for less than 5 minutes and left when she couldn’t get a sleeping suite. I wanted to bring in another friend. The airport staff first started acting as though they didn’t understand English and then became upset when I asked for their names so I could file a complaint. As an elite member I knew they could do more but were not. One of the agents started over talking me and walked away mid conversation dismissing my request for assistance. A man claiming to be the manager said you were asking for her name. He also never tried to assist me or see what was going on. He claimed the interactions were recorded and management would see everything. I’m not sure how that would assist me days later. I am sure it didn’t help that I was a black American woman.

Better attitude training for staff at airport, better training for flight attendants, better food, don’t put us with all the crying babies that cried nonstop for 12 plus hours.

Crew announced boarding started and they asked passengers to form a queue. Actual boarding didn’t start and queue was not moving for around 40-50 mins. Very poor management.

It was a terrible airline. The air hostess and the people in the flight, just very rude.

Crew on this flight was terrible. Especially one practicular female , she was harassing us and other families with children. Flight was good overall, if not her being rude and aggressive

It was good! Appreciated that it was very on schedule so it made the connecting flight less stressful

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

We were delayed an hour leaving Munich (No fault of the crew). They kept us posted on the status so we knew what was going on, but as a result we missed our connection in Chicago and the communication on connecting flights was pretty poor as we disembarked. It was already stressful and some of that could have been reduced by better communications about where to find transfers, etc.

One problem, but a serious one - the plane is built with electric windows that tint dark to reduce light. Sitting next to the window is VERY UNCOMFORTABLE as it emits so much HEAT in the face when tinted.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

Wifi wasn't working on one of the UA flights after boarding.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

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!

Would have liked to have Wi-Fi on the longer flight (nyc-Warsaw)

Tv screen not working. Food in business class was cold & not available

Horrible trip. Plane was late , so late . the flight conditions were very uncomfortable.

The boarding was delayed several times. The take off was two hours late.

Pros: "Quick Check in"
Cons: "The crew were not nice. They dont even pick up garbage during the 9 hour flight. They give you a gallon of water in a huge bottle without a glass and you are on your own."
Cons: "The TVs didn’t work even thought the steward ESS restarted them ."
Cons: "Everything is good! But the monitor on back not working very well lot of brakes when you watch a movie or listen music!"
Pros: "Nothing to like"
Cons: "This Iwa’s very bad experience. Never again will use LOT"
Cons: "The worse experience ever. I booked the flight and then they canceled it, i tried changing the dates but the website was giving me an error so i called them, after being on the phone for 2 hr some guy answered who seemed very tired and not thrilled working for LOT. Rood and not helpful, told me to try FB messenger and online changing again. Failed to get a voucher, refund or change the dates online, was still getting an error. on messenger they answered and told me i can get a voucher, i told them i don't want it and after that they stopped replying all together. good thing i got my money back by filing a dispute with my credit cart company."

Touchscreens do not work. WiFi did not work. Food is possibly the worst on any European airline. Drinks came by only four times on a cross-Atlantic. The plane was two hours late because—it was announced—Lufthansa didn't have enough large aircraft in their fleet to accommodate an on-time flight.

It was freezing in the airplane. Everyone was wearing everything they had with them. The crew acknowledged it was cold, but did nothing about it

The crew member put her luggage and boxes behind my seat so I was able to recline while the passenger in front of me did for 8 hours. My knees were forced against the seat for hours :(. Dude sitting next to me hasn't showered in weeks so I almost threw up.

I always try to book flights that don’t charge for baggage. Yet I was charged $75 for this flight.

Our flight to Chicago O'Hare was delayed an hour, causing us to miss our connection to MSP and spend an extra 3 hours at O'Hare so we could board a plane with a damaged door and wait another 45 minutes or so. The crew was great, the food decent, The drinks were great: 2 glasses of a nice South African Shiraz, an ice cold can of Beck's Beer, and Dewar's White Label on the rocks.

A350 has great entertainment. Make sure to watch the plane's external tail and nose camera's on landing and take off. Seats were a little hard for a 10 hour flight. I am gluten intolerant, they had good alternative meals for me on the flight.

Boarding was horrible. We were packed into a bus with few seats and made to stand for 10 to 15 minutes, then driven for 5 minutes on wild curves. Complementary food and drink was a tiny chocolate and a bottle of water. Seating was cramped. Aircraft had no video.

didn’t even get to go one of my returning flights cancelled and I wasn’t even in their system, vacation ruined thanks for nothing

Need more time for connecting flights in Munich Food seems worse now on Lufthansa Very uncomfortable seats

Better flight than mum to Frankfurt. But food was very mediocre.

Book cheap flights from Bulgaria to Chicago

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Chicago found on KAYAK in the last 72 hours.
10/10jue.
1 stop
27h 40mSOF-ORD
10/16mié.
2 stops
18h 05mORD-SOF
$537
10/10jue.
1 stop
27h 40mSOF-ORD
10/16mié.
1 stop
28h 10mORD-SOF
$540
6/6jue.
1 stopLOT
33h 00mSOF-ORD
7/5vie.
2 stopsLOT
40h 45mORD-SOF
$630
6/20jue.
1 stopUnited Airlines
16h 00mSOF-ORD
7/5vie.
2 stopsUnited Airlines
27h 10mORD-SOF
$639
6/18mar.
1 stopUnited Airlines
16h 00mSOF-ORD
9/10mar.
2 stopsUnited Airlines
20h 40mORD-SOF
$644
9/5jue.
2 stopsLOT
28h 30mSOF-ORD
12/5jue.
1 stopLOT
31h 55mORD-SOF
$652
6/5mié.
1 stopLufthansa
14h 15mSOF-ORD
6/12mié.
1 stopLufthansa
20h 00mORD-SOF
$697
5/27lun.
2 stopsAustrian Airlines
32h 07mSOF-ORD
6/30dom.
2 stopsAustrian Airlines
39h 15mORD-SOF
$706
7/19vie.
2 stopsAustrian Airlines
24h 40mSOF-ORD
3/1sáb.
1 stopAustrian Airlines
17h 40mORD-SOF
$726
6/29sáb.
2 stopsLufthansa
29h 20mSOF-ORD
7/12vie.
1 stopLufthansa
20h 00mORD-SOF
$769

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Chicago found on KAYAK in the last 72 hours.
10/19sáb.
1 stopQatar Airways
33h 50mSOF-ORD
$576
9/27vie.
1 stopQatar Airways
33h 50mSOF-ORD
$577
8/19lun.
2 stops
37h 02mSOF-ORD
$592
10/18vie.
1 stopQatar Airways
33h 50mSOF-ORD
$593
6/13jue.
2 stopsBritish Airways
25h 00mSOF-ORD
$601
6/13jue.
1 stopBritish Airways
24h 25mSOF-ORD
$605
9/27vie.
2 stopsBritish Airways
26h 19mSOF-ORD
$606
10/19sáb.
3 stops
35h 15mSOF-ORD
$635
8/19lun.
1 stopLOT
28h 30mSOF-ORD
$688
6/13jue.
3 stopsUnited Airlines
39h 15mSOF-ORD
$1,931

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Last minute flights to O'Hare Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Chicago that are departing in the next 10 days.
5/11sáb.
multi-stopITA Airways
27h 10mSOF-ORD
5/14mar.
multi-stopITA Airways
13h 05mORD-SOF
$664
5/11sáb.
multi-stopITA Airways
27h 10mSOF-ORD
5/14mar.
multi-stopITA Airways
13h 05mORD-SOF
$675
5/8mié.
multi-stopAir Canada
22h 06mSOF-ORD
6/26mié.
multi-stopAir Canada
16h 20mORD-SOF
$688
5/8mié.
multi-stopUnited Airlines
34h 58mSOF-ORD
6/26mié.
multi-stopUnited Airlines
20h 55mORD-SOF
$695
5/11sáb.
multi-stopAmerican Airlines
29h 20mSOF-ORD
5/14mar.
multi-stopAmerican Airlines
59h 03mORD-SOF
$794
5/8mié.
multi-stop
13h 20mSOF-ORD
6/26mié.
multi-stop
12h 10mORD-SOF
$800
5/11sáb.
multi-stopBritish Airways
25h 40mSOF-ORD
5/14mar.
multi-stopBritish Airways
40h 08mORD-SOF
$901
5/11sáb.
multi-stopBritish Airways
25h 40mSOF-ORD
5/14mar.
multi-stopBritish Airways
40h 08mORD-SOF
$902
5/11sáb.
multi-stopAir Canada
22h 06mSOF-ORD
5/14mar.
multi-stopAir Canada
17h 10mORD-SOF
$922
5/11sáb.
multi-stop
22h 06mSOF-ORD
5/14mar.
multi-stop
15h 05mORD-SOF
$924

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Flights to Chicago O'Hare Airport

Destination:

Chicago O'Hare Airport (ORD)United States

Return flight deals:

Chicago O'Hare Airport - Bulgaria

Cabin classes: