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SOF - ORD

Find cheap flights from Sofia to Chicago O'Hare Airport from $380

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to O'Hare Intl departing on 5/4. 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
sáb. 5/25
sáb. 6/1

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 in flight searches from Sofia to Chicago.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Chicago.
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

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Cheap flight deals from Sofia to O'Hare Intl (SOF-ORD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia 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 and deals for you by selecting your travel dates.
Choose your dates
6:40 pm - 7:40 pmSOF-ORD
33h 00m1 stop
9:40 pm - 1:55 pmORD-SOF
32h 15m1 stop
$557LOT
Find Deal
jue., may. 16 - jue., may. 23
2:40 pm - 3:10 pmSOF-ORD
32h 30m2 stops
9:40 pm - 1:55 pmORD-SOF
32h 15m1 stop
$577LOT
Find Deal
jue., may. 16 - jue., may. 23
8:00 pm - 3:50 pmSOF-ORD
27h 50m1 stop
4:45 pm - 8:25 pmORD-SOF
19h 40m1 stop
$618British Airways
Find Deal
lun., may. 6 - lun., oct. 7
6:00 am - 1:55 pmSOF-ORD
15h 55m1 stop
3:05 pm - 11:20 amORD-SOF
12h 15m1 stop
$634Lufthansa
Find Deal
jue., may. 9 - dom., may. 19
6:30 am - 12:55 pmSOF-ORD
14h 25m1 stop
4:00 pm - 10:35 pmORD-SOF
22h 35m1 stop
$635Lufthansa
Find Deal
mié., may. 8 - mar., jun. 18
6:00 am - 2:15 pmSOF-ORD
16h 15m1 stop
8:45 am - 12:10 pmORD-SOF
19h 25m2 stops
$637United Airlines
Find Deal
sáb., sep. 14 - sáb., oct. 5
6:00 am - 9:52 amSOF-ORD
35h 52m2 stops
2:09 pm - 11:00 pmORD-SOF
24h 51m2 stops
$638United Airlines
Find Deal
vie., may. 10 - sáb., may. 18
9:20 pm - 1:45 pmSOF-ORD
24h 25m1 stop
9:15 pm - 7:00 pmORD-SOF
13h 45m1 stop
$650British Airways
Find Deal
jue., jun. 20 - vie., jul. 5
6:45 pm - 11:20 amSOF-ORD
24h 35m2 stops
6:20 pm - 11:40 amORD-SOF
33h 20m2 stops
$731Austrian Airlines
Find Deal
vie., may. 10 - sáb., may. 18
6:45 pm - 1:15 pmSOF-ORD
26h 30m2 stops
3:55 pm - 11:55 pmORD-SOF
24h 00m2 stops
$813Austrian Airlines
Find Deal
lun., ago. 5 - mié., dic. 4

Flights from Sofia to O'Hare Intl - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from Sofia to Chicago O'Hare Airport?

The average price of all flights from Sofia to Chicago O'Hare Intl Airport clicked on KAYAK for each day over the last 12 months.
When flying from Sofia to Chicago O'Hare Airport, you should consider leaving on a Wednesday and avoid Mondays if you are looking for the best rates. For your return to Sofia, you’ll find the best rates on Thursdays and the most expensive ones on Tuesdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Sofia 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 from Sofia to Chicago O'Hare Intl Airport is February, where tickets cost $501 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $784 and $762 respectively.

How far in advance should I book a flight from Sofia 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 from Sofia 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 on the flight from Sofia to Chicago O'Hare Intl Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 67 days before departure.

Which airlines provide the cheapest flights from Sofia to Chicago O'Hare Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Chicago O'Hare Airport from Sofia were found on Qatar Airways ($630) and SWISS ($664), and the lowest round-trip tickets were found on LOT ($557) and Air Canada ($599).

Good to know

Low season

January

High season

September

Cheapest flight

$380
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from Sofia to Chicago O'Hare Airport

When to book flights from Sofia to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Sofia to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Sofia to Chicago O'Hare Airport flights

  • What is the cheapest flight from Sofia to Chicago O'Hare Intl Airport?

    In the last 3 days, the lowest price for a flight from Sofia to Chicago O'Hare Intl Airport was $380 for a one-way ticket and $557 for a round-trip.

  • Do I need a passport to fly between Sofia and Chicago O'Hare Airport?

    Yes

  • Which airports will I be using when flying from Sofia to Chicago O'Hare Airport?

    When flying out of Sofia you will be using Sofia. You will be landing at Chicago O'Hare Airport, also known as Chicago O'Hare Intl.

  • Which aircraft models fly most regularly from Sofia to Chicago O'Hare Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Sofia to Chicago O'Hare Airport?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Sofia and Chicago O'Hare Airport, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Sofia to Chicago, SWISS or Austrian Airlines?

    The two airlines most popular with KAYAK users for flights from Sofia to Chicago are SWISS and Austrian Airlines. With an average price for the route of $701 and an overall rating of 7.8, SWISS is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of $835 and an overall rating of 7.5.

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

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sofia 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 from Sofia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sofia 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 to Sofia with another airline. Booking your flights between Sofia and ORD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sofia 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 from Sofia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Sofia to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from Sofia to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sofia 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.
7.5
Austrian AirlinesOverall score based on 1091 reviews
7.6boarding
6.9food
6.9entertainment
8.2crew
7.4comfort
Airline reviews

Austrian was not the issue. Kayak was terrible The flight was canceled. Frustrating but it can happen. The worst was Kayak's customer support around re-booking. I have chatted with a bot, than with a person who insisted the flight was still on as originally booked. while chatting i went on Austrian web page and told the kayak chat lady that the flight is shown as cancelled. She said she will escalate this and that someone will contact me within the hour. When I have asked her to give me the details of the flight she sees, She gave me the general A to B and return B to A. Totally unhelpful. After two hours I contacted them again, They were still saying the original flight is as scheduled and when I explained again I was told I will be contacted within 2-6 hours. NO ONE CONTACTED ME EVER SINCE! I have than contacted Austrian directly and was rebooked on a difficult flight. Kayak continued to send me irrelevant updates about my original flight. Terrible customer service at time of need.

2.0 MediocreRoni, Mar 2024TLV - VIE
Read more about Austrian Airlines reviews

Austrian was not the issue. Kayak was terrible The flight was canceled. Frustrating but it can happen. The worst was Kayak's customer support around re-booking. I have chatted with a bot, than with a person who insisted the flight was still on as originally booked. while chatting i went on Austrian web page and told the kayak chat lady that the flight is shown as cancelled. She said she will escalate this and that someone will contact me within the hour. When I have asked her to give me the details of the flight she sees, She gave me the general A to B and return B to A. Totally unhelpful. After two hours I contacted them again, They were still saying the original flight is as scheduled and when I explained again I was told I will be contacted within 2-6 hours. NO ONE CONTACTED ME EVER SINCE! I have than contacted Austrian directly and was rebooked on a difficult flight. Kayak continued to send me irrelevant updates about my original flight. Terrible customer service at time of need.

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.

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.

Premium Economy is good value in comparison to Business Class. Not all the perks of Business but a lot of leg room and wider seat and elbow room. Food was very good. I even asked for a Gruner Veltliner wine which was not on the trolley and the attendant went into Business/First to get me a glass. Nice little touch. I would like to have a wider selection of music -- more 70's-80's (guess how old I am).

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

I been flying with Austrian for few years, they never failed me.

The restrictions regarding carry-on baggage is too strict. My wife was forced to check her carry-on bag. Never had this on other airlines.

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

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!

Unfortunately this is not a happy ending comment. Positive: flown United before no issue Negative: it only takes one bad experience to not plan future travel with United Cancún departure was delayed by 1h20 minutes, connection in Chicago was 1h30 minutes. Flight departure time 6:08 Miraculously 7 of us ran 4 kilometres through Chicago to arrive at 6:00 to be told very rudely by the 2 unprofessional United attendants you missed your flight and that we should of arrived early. Did I mention that reason I was flying? I received a call that my brother was dying and to get home. They provided no assistance would not answer any of our questions, ignorantly walked away. Deplorable

Awful…flight was delayed more than 12hrs, missed all connections to Fort Wayne, IN, had to get flight to another city 2 hours from my destination, flight was again delayed by 40 mins because they did not have enough fuel, again missed a connection, finally arrived in Indiana at 11pm…but before my 2 hour drive home, ay, no Five That Our Luggage Never Made On The plane and Still In Chicago

If United expects people to use their own devices for entertainment they should put charging outlets in each seating area. I arrived with 14%battery power. That is not good when you arrive anywhere and need to communicate for transportation.

Boarding was friendly and quick. While the plane model was older with no live tv, the entertainment was full of movies and tv shows. All food was available. Pilots were very communicative with status of the flight. Flight landed on time.

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!

Garbage airline at a premium price. Both ways was unable to purchase seats before checking. Called, messaged on Facebook, and emailed. All three times staff said I could, and gave me form responses on how to, despite providing screenshots/explaining beforehand showing I couldn't. At check-in both times they sat me and my wife separately, despite booking together. Both legs the USB port in my entertainment system was broken. Food is atrocious. Seats are old and uncomfortable, and struggle to adjust. Toilets were like portapotties at a concert.

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

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

My bag was lost despite an almost 8 hour layover in Warsaw. Nearly 12 hours after my arrival, I have not heard anything about it.

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."

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.

All flights cancelled with no way to reach the airline

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.

Flight landed on time but land services kept us in the plane for 3 hours. I missed connecting flight.

Book cheap flights from Sofia to Chicago

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Sofia to Chicago found on KAYAK in the last 72 hours.
5/4sáb.
2 stops
35h 54mSOF-ORD
$380
5/4sáb.
3 stops
53h 10mSOF-ORD
$388
7/15lun.
1 stopLufthansa
16h 00mSOF-ORD
$676
7/12vie.
1 stopUnited Airlines
13h 20mSOF-ORD
$677
7/16mar.
1 stopLufthansa
16h 00mSOF-ORD
$678
8/9vie.
1 stopLOT
13h 00mSOF-ORD
$685
8/13mar.
2 stopsUnited Airlines
26h 46mSOF-ORD
$688
7/30mar.
2 stopsAustrian Airlines
35h 25mSOF-ORD
$698
8/12lun.
2 stopsAustrian Airlines
52h 45mSOF-ORD
$700
8/9vie.
2 stopsLOT
28h 30mSOF-ORD
$702

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Last minute flights from Sofia 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 from Sofia to Chicago that are departing in the next 10 days.
4/28dom.
multi-stopUnited Airlines
22h 16mSOF-ORD
5/17vie.
multi-stopUnited Airlines
22h 35mORD-SOF
$698
4/28dom.
multi-stopUnited Airlines
25h 30mSOF-ORD
5/17vie.
multi-stopUnited Airlines
17h 17mORD-SOF
$702
4/28dom.
multi-stop
26h 35mSOF-ORD
5/17vie.
multi-stop
11h 45mORD-SOF
$716
4/28dom.
multi-stop
33h 20mSOF-ORD
5/17vie.
multi-stop
32h 30mORD-SOF
$1,265
4/28dom.
multi-stop
30h 10mSOF-ORD
5/17vie.
multi-stop
32h 30mORD-SOF
$1,335

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Sofia - Chicago O'Hare Airport Flights

Departure:

Sofia (SOF)Bulgaria

Destination:

Chicago O'Hare Airport (ORD)United States

Return flight deals:

Chicago O'Hare Airport - Sofia

Cabin classes: