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SOF - CHI

$401 Find cheap flights from Sofia to Chicago

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 Chicago departing on 6/18. 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
Sat 7/13
Sat 7/20

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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 44,216,777 times on KAYAK, and here is why:

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Cheap flight deals from Sofia to Chicago (SOF-CHI)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to Chicago 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
6:30 am - 12:55 pmSOF-ORD
14h 25m1 stop
9:25 pm - 11:00 pmORD-SOF
17h 35m1 stop
$614Lufthansa
Find Deal
Wed, Sep 18 - Wed, Oct 2
2:05 pm - 9:54 amSOF-ORD
27h 49m2 stops
10:55 am - 1:20 pmORD-SOF
18h 25m2 stops
$630Air Canada
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Tue, Oct 1 - Sat, Oct 12
6:30 am - 1:10 pmSOF-ORD
14h 40m1 stop
3:50 pm - 11:00 pmORD-SOF
23h 10m2 stops
$637United Airlines
Find Deal
Tue, Oct 1 - Sat, Oct 12
6:30 am - 3:00 pmSOF-ORD
16h 30m1 stop
1:26 pm - 1:20 pmORD-SOF
15h 54m2 stops
$645United Airlines
Find Deal
Wed, Sep 18 - Wed, Oct 2
3:45 pm - 9:40 amSOF-ORD
25h 55m1 stop
8:30 pm - 8:30 amORD-SOF
28h 00m1 stop
$683Turkish Airlines
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Mon, Jul 8 - Sat, Jul 27
9:10 pm - 9:40 amSOF-ORD
20h 30m1 stop
11:25 am - 2:55 pmORD-SOF
19h 30m1 stop
$734Turkish Airlines
Find Deal
Sun, Jul 7 - Sat, Jul 27
8:05 pm - 6:15 pmSOF-ORD
30h 10m1 stop
7:10 pm - 7:10 pmORD-SOF
16h 00m1 stop
$770British Airways
Find Deal
Sat, Jun 29 - Sun, Jul 21
8:00 pm - 1:45 pmSOF-ORD
25h 45m1 stop
4:45 pm - 8:05 pmORD-SOF
19h 20m2 stops
$774British Airways
Find Deal
Mon, Jul 8 - Sat, Jul 27
6:40 pm - 3:10 pmSOF-ORD
28h 30m1 stop
9:55 pm - 5:45 pmORD-SOF
11h 50m1 stop
$821LOT
Find Deal
Mon, Aug 19 - Mon, Feb 17
2:40 pm - 3:10 pmSOF-ORD
56h 30m2 stops
9:55 pm - 5:45 pmORD-SOF
11h 50m1 stop
$829LOT
Find Deal
Mon, Aug 19 - Mon, Feb 17

Flights from Sofia to Chicago - Travel Insights & Trends

Get data-powered insights and trends into flights from Sofia to Chicago 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?

The average price of all flights from Sofia to Chicago clicked on KAYAK for each day over the last 12 months.
For Sofia to Chicago, Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Chicago back to Sofia, the best deals are generally found on Thursday, with Saturday being the most expensive.

What is the cheapest month to fly from Sofia to Chicago?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Sofia to Chicago, 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 is February, where tickets cost $586 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $803 and $748 respectively.

How far in advance should I book a flight from Sofia to Chicago?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Sofia to Chicago, 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, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 68 days before departure.

Which airlines provide the cheapest flights from Sofia to Chicago?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from Sofia to Chicago found by KAYAK users in the last 72 hours was for $614 on Lufthansa, followed by Air Canada ($630). One-way flight deals have also been found from as low as $544 on Air Serbia and from $600 on Turkish Airlines.

Good to know

Low season

January

High season

December

Cheapest flight

$401
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Sofia to Chicago O'Hare Airport

When to book flights from Sofia to Chicago

Are your dates flexible? Find out the best times to travel from Sofia to Chicago 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 flights from Sofia to Chicago

  • What is the cheapest flight from Sofia to Chicago?

    In the last 3 days, the lowest price for a flight from Sofia to Chicago was $401 for a one-way ticket and $614 for a round-trip.

  • Do I need a passport to fly between Sofia and Chicago?

    A passport is required to fly from Sofia to Chicago.

  • Which aircraft models fly most regularly from Sofia to Chicago?

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

  • Which airline alliances offer flights from Sofia to Chicago?

    Star Alliance, and oneworld are the airline alliances operating flights between Sofia and Chicago, 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 $598 and an overall rating of 7.7, SWISS is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of $847 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Sofia 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 from Sofia to Chicago.

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

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

    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 to Sofia with another airline.

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

 
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 Chicago? 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 987 reviews
6.9Entertainment
6.9Food
8.2Crew
7.6Boarding
7.5Comfort
Airline reviews

No delays, helpful staff, well organised. The check in and boarding procedures ran smoothly. The only thing that put me off is that the meal had spicy peppers in. I would have appreciated at least a warning (if i couldn't have a choice) so as to simply not eat them because they were too spicy.

8.0 ExcellentAnonymous, May 2024ORD - VIE
Read more about Austrian Airlines reviews

No delays, helpful staff, well organised. The check in and boarding procedures ran smoothly. The only thing that put me off is that the meal had spicy peppers in. I would have appreciated at least a warning (if i couldn't have a choice) so as to simply not eat them because they were too spicy.

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.

The crew was attentive but not intrusive, and was always kind in every interaction.

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.

It becomes like Wizz air, no good, bad comfort and you should pay for 20kg bag.

I am Star Alliance Gold which meant nothing at security as my partner, who was on the same ticket, couldn’t come through with me which meant I had to wait for 20 minutes for him to join me. For a hub airport the lounge was small and uninspiring. We told staff of our security experience and they informed us it was like this for everyone. Isn’t this is an Austrian Airlines hub? Boarding was a nightmare as there was only one person at the gate and again, I had to go through without my partner. The boarding was supposed to be in groups but a bunch of travellers with lower groups were crowding the entry level. After I managed to get through I found myself on a bus waiting with 3 others for 15 minutes as the checkin had failed. Then only to find everyone else coming onto the same bus. My partner and friends actually beat me onboard. The crew were young and unable to control the crowd allowing people to stand in the rain instead of getting people to their seats promptly. During flight we were only offered a cup of water & a chocolate. Not impressed with Austrian Airlines or their Vienna hub airport and plan not to use them again if I can help it!

Great service, great food, and comfortable business class seats... Friendly and professional flight attendants and ground crew, overall 5 star experience!

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.

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

I had a great flight. Everything went smoothly and the flight arrived early.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

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.

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!

LOT airlines wasn't the best. They had trouble with boarding and they didn't have my information on file the right way. They change last minute details without us knowing and everything was a HOT MESS. Lot airlines also lost my baggae which was the carseat and haven't responded to any of my emails.

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

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."
Pros: "The seats were very comfortable. The plane was clean and the crew was very friendly."
Pros: "The crew was very profesional . Our fly was safe and on time."
Cons: "Maybe variety of good movie could be better ."

The trip was good except for the delay that caused a connection issue in Chicago.

The flight was wonderful, especially the special assistance from airplane to airplane!

They canceled our flight last minute and we had to get another flight with twice the cost

Will try to not fly with them again. Delays because of weather but got redirected to an airport where I could not make connection.

my flight was at 3:45 after that they delayed to 4:40 I have transit from Chicago to Frankfurt and Frankfurt to vina airport from vina to Erbil buy the Time I come to Frankfort my other flight left me I have to stay at airport all day with my 5 kids ask for help no one help me I spent at airport almost $450 just for food was horrible flight ever I call and ask for hotel from united customer service they been telling me we can’t provide any hotel I need some refund or fixed my flight when I return to America need some one respond my email

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

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.
6/18Tue
3 stops
58h 44mSOF-ORD
$401
6/18Tue
2 stops
43h 54mSOF-ORD
$435
7/15Mon
1 stopTurkish Airlines
25h 55mSOF-ORD
$600
6/26Wed
1 stopTurkish Airlines
32h 20mSOF-ORD
$603
6/25Tue
1 stopAustrian Airlines
13h 20mSOF-ORD
$683
6/27Thu
1 stopLufthansa
14h 15mSOF-ORD
$684
6/29Sat
1 stopLufthansa
15h 55mSOF-ORD
$685
6/26Wed
2 stopsAustrian Airlines
18h 52mSOF-ORD
$688
7/15Mon
2 stopsUnited Airlines
25h 15mSOF-ORD
$694
6/24Mon
2 stopsUnited Airlines
21h 55mSOF-ORD
$695

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Last minute flights from Sofia to Chicago

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.
6/16Sun
multi-stopUnited Airlines
31h 10mSOF-ORD
7/1Mon
multi-stopUnited Airlines
29h 50mORD-SOF
$717
6/16Sun
multi-stopAustrian Airlines
26h 35mSOF-ORD
7/1Mon
multi-stopAustrian Airlines
24h 05mORD-SOF
$779
6/16Sun
multi-stopUnited Airlines
14h 25mSOF-ORD
7/1Mon
multi-stopUnited Airlines
29h 52mORD-SOF
$781
6/16Sun
multi-stopUnited Airlines
32h 05mSOF-ORD
7/1Mon
multi-stopUnited Airlines
29h 52mORD-SOF
$791
6/16Sun
multi-stopLufthansa
20h 15mSOF-ORD
7/1Mon
multi-stopLufthansa
30h 45mORD-SOF
$819
6/14Fri
multi-stopUnited Airlines
13h 20mSOF-ORD
6/27Thu
multi-stopUnited Airlines
20h 20mORD-SOF
$838
6/14Fri
multi-stopBritish Airways
33h 20mSOF-ORD
6/21Fri
multi-stopBritish Airways
13h 45mORD-SOF
$840
6/14Fri
multi-stopUnited Airlines
33h 08mSOF-ORD
6/27Thu
multi-stopUnited Airlines
20h 20mORD-SOF
$848
6/14Fri
multi-stopBritish Airways
33h 20mSOF-ORD
6/21Fri
multi-stopBritish Airways
16h 35mORD-SOF
$931
6/14Fri
multi-stopLufthansa
20h 15mSOF-ORD
6/27Thu
multi-stopLufthansa
22h 35mORD-SOF
$941

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Sofia - Chicago Flights

Departure:

Sofia (SOF)Bulgaria

Return flight deals:

Chicago - Sofia

Cabin classes:

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