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CHI - SOF

Find cheap flights from Chicago to Sofia from $464

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Sofia departing on 7/29. 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
Thu 6/6
Thu 6/13

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

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Sofia 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
3:00 pm - 5:10 pmORD-SOF
18h 10m1 stop
6:00 pm - 1:10 pmSOF-ORD
27h 10m1 stop
$689ITA Airways
Find Deal
Fri, May 10 - Sat, May 18
3:00 pm - 5:10 pmORD-SOF
18h 10m1 stop
6:00 pm - 1:10 pmSOF-ORD
27h 10m1 stop
$690ITA Airways
Find Deal
Thu, Jul 18 - Sun, Aug 18
8:30 pm - 8:20 pmORD-SOF
15h 50m1 stop
9:10 pm - 9:40 amSOF-ORD
20h 30m1 stop
$702Turkish Airlines
Find Deal
Thu, Aug 1 - Sat, Oct 5
8:30 pm - 8:20 pmORD-SOF
15h 50m1 stop
9:10 pm - 9:40 amSOF-ORD
20h 30m1 stop
$712Turkish Airlines
Find Deal
Fri, Aug 2 - Sat, Oct 5
5:10 pm - 5:55 pmORD-SOF
16h 45m2 stops
2:40 pm - 7:40 pmSOF-ORD
13h 00m1 stop
$725LOT
Find Deal
Thu, Aug 1 - Wed, Sep 18
7:35 am - 6:45 pmORD-SOF
27h 10m2 stops
6:00 am - 11:14 pmSOF-ORD
25h 14m2 stops
$735United Airlines
Find Deal
Wed, Jul 24 - Fri, Aug 23
3:10 pm - 11:20 amORD-SOF
12h 10m1 stop
6:00 am - 2:15 pmSOF-ORD
16h 15m1 stop
$737United Airlines
Find Deal
Mon, Jul 29 - Fri, Oct 4
5:10 pm - 5:55 pmORD-SOF
16h 45m2 stops
6:40 pm - 3:10 pmSOF-ORD
28h 30m1 stop
$740LOT
Find Deal
Thu, Aug 1 - Sat, Oct 5
9:25 pm - 10:35 pmORD-SOF
17h 10m2 stops
6:00 am - 12:15 pmSOF-ORD
14h 15m1 stop
$749Lufthansa
Find Deal
Tue, Jul 30 - Tue, Oct 1
9:25 pm - 10:35 pmORD-SOF
17h 10m2 stops
7:30 pm - 12:15 pmSOF-ORD
24h 45m1 stop
$757Lufthansa
Find Deal
Tue, Jul 30 - Sun, Oct 6

Flights from Chicago to Sofia - Travel Insights & Trends

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Chicago to Sofia, 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 Chicago to Sofia is November, where tickets cost $569 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,284 and $1,214 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Chicago to Sofia, 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 Chicago to Sofia, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 17 days before departure.

Which airlines provide the cheapest flights from Chicago to Sofia?

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 Sofia from Chicago were found on ITA Airways ($524) and Turkish Airlines ($585), and the lowest round-trip tickets were found on ITA Airways ($689) and Turkish Airlines ($702).

Good to know

Low season

January

High season

July

Cheapest flight

$464
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly with an average 44% increase in price.
Flight from Chicago O'Hare Airport to Sofia

When to book flights from Chicago to Sofia

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

  • Does SOF have an on-site hotel?

    If you intend to stay at a hotel within SOF grounds, you're in luck, as the airport boasts the Ibis Sofia Airport. A 10min walk from Terminal A, this hotel boasts elite rooms. Thus, it's safe to say that your comfort is guaranteed at this hotel.

  • How can I move from Terminal 1 to 2 at SOF?

    In case you'd like to move from Terminal 1 to 2, or vice versa, you can board the free shuttle bus that connects these terminals. Daily, this bus operates from 5 am to 11 pm. It covers the route every 15min.

  • Are there nursing rooms at ORD?

    If you'd like to breastfeed your infant while waiting for your flight to Sofia at ORD, you need not worry about struggling to find a private space to feed your baby, as ORD features several nursing rooms. The said nursing rooms are near Gate B10 in Terminal 1, on the walkway between Gates E5 and F9 in Terminal 2, near the Urban Garden in Terminal 3's rotunda, and a short distance from Gate M14 in Terminal 5.

  • Where can I get assistance at MDW?

    If you need assistance at MDW, you should visit the airport's information desk, situated at the Main Entrance of the airport's terminal. At this desk, you'll get all the help you need, as it is manned by informed airport staff.

  • What is the cheapest flight from Chicago to Sofia?

    In the last 3 days, the lowest price for a flight from Chicago to Sofia was $464 for a one-way ticket and $689 for a round-trip.

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

    Yes, you’ll need a passport to travel to Sofia from Chicago.

  • Which airports will I be using when flying from Chicago to Sofia?

    When flying out of Chicago you will be using one of these airports: Chicago Midway or Chicago O'Hare Intl. You will be landing at Sofia.

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

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

  • Which airline alliances offer flights from Chicago to Sofia?

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

  • What is the most popular layover when flying to Sofia from Chicago?

    Munich is the most popular layover city among KAYAK users traveling from Chicago to Sofia.

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

    The two airlines most popular with KAYAK users for flights from Chicago to Sofia are SWISS and Austrian Airlines. With an average price for the route of $1,097 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 $971 and an overall rating of 7.6.

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

    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 Chicago to Sofia.

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

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

    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 Sofia with an airline and back to Chicago with another airline.

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

    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 Sofia from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Chicago to Sofia

  • In Chicago, you can board your flight to Sofia at Chicago Midway International Airport (MDW) or O'Hare International Airport (ORD). If you'd like to fly cheaply to Sofia, ORD is the airport for you, as it serves the cheapest flights from Chicago to the Bulgarian capital. On the other, if you'd like to board your flight at an airport where you'll encounter the least traffic, MDW is the airport for you.
  • On the day you're set to fly to Sofia from ORD or MDW, you should get to your Chicago airport of choice at least 2h ahead of your flight. This will give you adequate time to go through the airport's security checkpoints in time for your flight. It will also give you enough time to check out the airport's points of interest.
  • All airlines traveling from ORD and MDW to Sofia Airport (SOF) offer elite-assisted travel services to passengers with disabilities, provided that the said passengers contact them at least 72h before their flight. Therefore, if you have special needs and require special in-flight services, you should contact the airline you plan on traveling with from your preferred Chicago airport to Sofia at least 72 before your flight.
  • To be able to purchase items and pay for services easily while in Sofia, you should convert some of your cash to Bulgaria's local currency at one of SOF's currency exchange sites run by ICE Exchange. Two are located in 2, while one is found in Terminal 1.
  • SOF features locations for car rentals like Avis, Budget, SIXT, Thrifty, Europcar, and Enterprise in Terminal 2. This being the case, if you'd like to hire a car once you land at SOF, you'll have a variety of car rental agencies to choose from.
See more tips

Top 5 airlines serving from Chicago to Sofia

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Sofia. 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 Chicago to Sofia? 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
7.6Boarding
7.4Comfort
8.1Crew
6.8Food
6.9Entertainment
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.

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

the flight was canceled, and I had to stay more than six days at hotel . waiting . then I had to buy new ticket. really it was very bad experience, and I lost a lot of money and time , and your airline said sorry

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

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.

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.

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

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.

Very efficient and profesional .One of the best. I had 20 minutes between 2 flights and still made it amazing.

Excellent service and comfort from the moment you check in. Flight crew is hyper focused on making passengers comfortable and at ease. It’s like a flying hotel!

Only chicken as a meat dish through out the flight

Nothing really was great as such. Seen other no name airlines perform better.

Quality of service on board was very inconsistent. FA service primarily seemed robotic and they barely engaged with passengers

I’m unclear why I had to pay extra for assigned seats as Turkish airlines did not honor the seating. We were placed across the aisle from each other on TK 34, and were seated behind one another on TK 694. Because my name was misspelled on e-ticket (Klawiter, instead of Klawitter) I could not log onto website to get the connection gate number in Istanbul. The monitors in the airport were a jumbled mess 1/2 Arabic and 1/2 English.

On line check in needs a lot of improvement. I tried and gave up.

Food not good, flight attendants not the best, not accommodating very ruff

the female flight attendant was racist towards me. I could tell she treated the two other passengers next to me with more softness.

Oh my god! For an13 hour flight they serve you food just one time. Also don’t be thirsty they give you a little small cup of soda to drink. They seem like their goal is to feed you one so they don’t have to be bothered with you. It quite surprise for such a long flight there are several times to eat at least three and the food was well lackluster. The food and lack of offering drinks which were always hot no ice provided.

We were traveling first class. Checkin counter lady and her manager, both were in bad mood and did not treat us well about checking in the handbag. The gate agent took care of it right away. I travel Turkish twice a year in first class. No one has ever refused to check in the hand bag. Not sure, why this agent and her manager refused. Everything else was excellent.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

Nothing beats ANA customer service on my opinion. Maybe because of their Japanese culture (and food). Arigatō

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

Flight delayed for 2 hours due to a part. The plane sat waiting for boarding for a long time and during final preflight inspection the issue was found. Why not do the preflight inspection sooner if you know the plane is being used?

The flight experience was very good! Especially the United Club!

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Aircraft has better leg room than any of United's larger planes. We had requested mobility assistance for this and related flights. United's response to all was superb.

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

Good boarding. Crew started quick with drinks and food. They came around several times for trash which I really liked. Other than turbulence due to storms in the area, flight was great.

All good! But sandwiches for breakfast need to be warm!!!!! Not cold!!! You do not want anything cold in your stomach in the morning!… think about it!

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.

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)

My flight was cancelled and I went through hell to get it fixed, with no help from the website I booked it on. My reservation was cancelled AGAIN by the site I booked on without my knowledge a week later. The flight itself that I finally got on was awful. Drunk man belligerent the entire flight, I don't understand how he was allowed on the flight.

Lot still has not refunded me after they cancelled my flight to India!! Kayak had been awful at getting me this refund too. Will NEVER be using kayak or LOT again.

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

The customer service and the flight experience were very good!

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.

The plane was very comfortable, the seats were great for overnight flight. The bathrooms were spotless the entire flight

Bordón could be bettet if the company say before boarding the order of the different groups.

Checked in is easy and it was a smooth flight from LAX to Munich

There is no recline on flight from DFW to FRA. Middle eastern airways provide better recline option for the same class. FRA to Bangalore has better recline option. I bid 100$ for premium economy, my request was declined. But staff handled it without issues.

The Lufthansa part was wonderful. The short connection flight was not.

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Awful Terrible staff poor communication Flight delayed for an hour with no apology or explanation and no help re missing connecting flight. Resulted in a 7 hour layover at Munich waiting for another connecting flight. Only 15 euros refreshment voucher given. Will not fly Lufthansa again

Both flights were late for what appeared to be the airline’s not having the planes ready. Arrived over 6 hours late.

It was a busy flight and all the crew were very helpful and gracious

Seats were not the most comfortable and food options weren’t great but overall but everything else was excellent

Check-in very easy and smooth. Plane and crew were nice. Seat open next to me created more space. Food was fair but plentiful. Lots of movies and I was able to sleep some on the way to Munich. Very tight connection, about an hour. Fast through passport control and a bit of a walk to last G terminal gate but I made my connection to Palma. Unfortunately, my luggage did not make it. It is now almost 24 hours since I anded and still NO luggage. I know it landed last night on another flight. Local delivery should be today to my hotel in Palma but nothing yet. I asked about the tight connection when I checked in and was assured they would get my luggage to the connecting flight. Very disappointing it missed my flight but more disappointing that it has taken so long to arrive. Failure on the airlines and service to get my luggage to date.

Book cheap flights from Chicago to Sofia

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Chicago to Sofia found on KAYAK in the last 72 hours.
7/29Mon
3 stops
31h 55mORD-SOF
$464
6/19Wed
3 stops
41h 33mORD-SOF
$465
8/4Sun
1 stopTurkish Airlines
15h 50mORD-SOF
$585
7/30Tue
1 stopTurkish Airlines
15h 50mORD-SOF
$586
5/15Wed
1 stopLufthansa
13h 20mORD-SOF
$598
7/18Thu
2 stopsLOT
16h 45mORD-SOF
$612
7/18Thu
2 stopsLOT
40h 45mORD-SOF
$613
5/10Fri
1 stopLufthansa
16h 05mORD-SOF
$660
5/12Sun
2 stopsUnited Airlines
31h 31mORD-SOF
$672
6/5Wed
1 stopUnited Airlines
13h 20mORD-SOF
$797

Search by stops

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Last minute flights from Chicago to Sofia

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 Chicago to Sofia that are departing in the next 10 days.
5/10Fri
multi-stopITA Airways
18h 10mORD-SOF
5/18Sat
multi-stopITA Airways
27h 10mSOF-ORD
$689
5/10Fri
multi-stopUnited Airlines
19h 50mORD-SOF
5/19Sun
multi-stopUnited Airlines
15h 55mSOF-ORD
$741
5/10Fri
multi-stopUnited Airlines
41h 28mORD-SOF
5/18Sat
multi-stopUnited Airlines
18h 35mSOF-ORD
$742
5/10Fri
multi-stopAir Canada
16h 20mORD-SOF
5/18Sat
multi-stopAir Canada
35h 24mSOF-ORD
$833
5/10Fri
multi-stopLOT
12h 15mORD-SOF
5/21Tue
multi-stopLOT
33h 00mSOF-ORD
$922
5/10Fri
multi-stopLOT
16h 45mORD-SOF
5/14Tue
multi-stopLOT
33h 00mSOF-ORD
$927
5/10Fri
multi-stopBritish Airways
19h 15mORD-SOF
5/14Tue
multi-stopBritish Airways
24h 30mSOF-ORD
$1,126
5/9Thu
multi-stopAustrian Airlines
11h 20mORD-SOF
5/10Fri
multi-stopAustrian Airlines
29h 15mSOF-ORD
$1,324
5/9Thu
multi-stopAustrian Airlines
17h 40mORD-SOF
5/11Sat
multi-stopAustrian Airlines
13h 20mSOF-ORD
$1,347
5/9Thu
multi-stopAir Canada
21h 20mORD-SOF
5/10Fri
multi-stopAir Canada
25h 56mSOF-ORD
$1,378

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Flights to Sofia

Destination:

Sofia (SOF)Bulgaria

Return flight deals:

Sofia - Chicago

Cabin classes:

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