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ORD - SOF

Find cheap flights from Chicago O'Hare Airport to Sofia from $379

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to Sofia departing on 6/17. 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 5/25
Sat 6/1

Search hundreds of travel sites at once for deals on flights to Sofia

 
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 45,119,101 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl 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
4:45 pm - 8:25 pmORD-SOF
19h 40m1 stop
5:25 pm - 1:55 pmSOF-ORD
28h 30m1 stop
$553British Airways
Find Deal
Mon, Oct 21 - Mon, Nov 4
4:45 pm - 8:25 pmORD-SOF
19h 40m1 stop
5:25 pm - 4:04 pmSOF-ORD
30h 39m2 stops
$562British Airways
Find Deal
Mon, Oct 21 - Mon, Nov 4
3:35 pm - 6:45 pmORD-SOF
19h 10m1 stop
6:00 am - 12:15 pmSOF-ORD
14h 15m1 stop
$590Lufthansa
Find Deal
Tue, Oct 1 - Tue, Oct 15
7:10 am - 11:00 pmORD-SOF
31h 50m2 stops
6:00 am - 12:15 pmSOF-ORD
14h 15m1 stop
$594United Airlines
Find Deal
Tue, Sep 24 - Tue, Oct 8
11:25 am - 8:20 pmORD-SOF
24h 55m1 stop
9:10 pm - 9:40 amSOF-ORD
20h 30m1 stop
$599Turkish Airlines
Find Deal
Wed, Sep 18 - Wed, Sep 25
8:30 pm - 8:30 amORD-SOF
28h 00m1 stop
9:10 pm - 9:40 amSOF-ORD
20h 30m1 stop
$628Turkish Airlines
Find Deal
Mon, Aug 5 - Fri, Sep 27
2:10 pm - 6:45 pmORD-SOF
20h 35m2 stops
7:30 pm - 12:30 pmSOF-ORD
25h 00m1 stop
$653Lufthansa
Find Deal
Sun, Aug 25 - Sun, Sep 8
3:50 pm - 6:45 pmORD-SOF
18h 55m2 stops
6:00 am - 10:22 pmSOF-ORD
24h 22m2 stops
$664United Airlines
Find Deal
Fri, Sep 13 - Tue, Oct 1
9:40 pm - 1:55 pmORD-SOF
32h 15m1 stop
2:40 pm - 3:10 pmSOF-ORD
32h 30m1 stop
$706LOT
Find Deal
Fri, Aug 23 - Sat, Sep 14
9:40 pm - 1:55 pmORD-SOF
32h 15m1 stop
2:40 pm - 3:10 pmSOF-ORD
32h 30m1 stop
$709LOT
Find Deal
Fri, Sep 6 - Sat, Sep 28

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

Get data-powered insights and trends into flights from O'Hare Intl 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 O'Hare Airport to Sofia?

The average price of all flights from Chicago O'Hare Intl Airport to Sofia clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Sofia on a Thursday and more expensive on a Tuesday. On your return trip to Chicago O'Hare Airport, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Sofia is January, where tickets cost $512 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,279 and $1,249 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Sofia, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 78 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, ITA Airways offered the best one-way deal for that route, at $482. KAYAK users also found Chicago O'Hare Airport to Sofia round-trip flights on British Airways from $553 and on Lufthansa from $590.

Good to know

Low season

February

High season

June

Cheapest flight

$379
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly with an average 60% increase in price.
Flight from Chicago O'Hare Airport to Sofia

When to book flights from O'Hare Intl to Sofia

Are your dates flexible? Find out the best times to travel from O'Hare Intl 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 Chicago O'Hare Airport to Sofia flights

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

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Sofia was $379 for a one-way ticket and $553 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Chicago O'Hare Airport and on arrival in Sofia.

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

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

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

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Chicago O'Hare Airport 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 O'Hare Airport?

    Istanbul is the most popular layover city among KAYAK users traveling from Chicago O'Hare Airport 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 $1,086 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 $797 and an overall rating of 7.5.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from 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 from Chicago O'Hare Airport 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 O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and SOF 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 Chicago O'Hare Airport 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 O'Hare Airport 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 O'Hare Intl 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 O'Hare Intl 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.
7.4
Turkish AirlinesOverall score based on 3688 reviews
7.4boarding
7.4food
7.8crew
7.5entertainment
7.4comfort
Airline reviews

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

4.0 OkayAkash, Apr 2024IAD - IST
Read more about Turkish Airlines reviews

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.

The 787 economy was a disaster for long haul. The space was too little compared to 777 or 747. Also the extremely low tray table behind the seat made any dining effort a nightmare. However, the movies were up to date, and the food taste was good, despite of terrible serving process caused by small space.

A little bit more comfort. It’s tight space around the seats. But all else is great and a smooth flight!

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.

my seat got changed twice after checking on then boarding it had been given to a family so by the time they found a seat for me no overhead storage left. i ended up losing my Sony Headphones case because i could even access underthe seat in front of my when deplaning.

All good, useful to have the united app from check in to boarding

All planes flying to Mexico City are very old. Seats don’t even have power outlets.

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.

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

Cons: "The TVs didn’t work even thought the steward ESS restarted them ."

Horrible experience. Nothing to give to kids to keep them entertained.

I think I have bruises on my kneecaps. Do the seats have to be so close together these days? And if they are so close they really shouldn’t recline. I think when the gentleman in front of me reclined, the back of his head was on my chin. That being said the crew were always caring and polite, and the flight was on time and very safe. So I’m grateful for that.

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

Trouble keeps changing the time and I was booked different flight without knowing it was bad experience

I dropped my wallet under my seat on this flight with all of my money and credit card. I requested to be able to go back and retrieve it but Lufthansa denied my request. I went to the Customer Services and they called Lost and Found but I was told nothing found would be turned in until around 12:00pm. My next flight was leaving so I was unable to check to see if my wallet was turned in. I will never fly with Lufthansa again.

My concern is with Flight: 441 IAH-FRA I was very cramped in my seat and the person in front of me was reclined. I pulled my wallet out of my purse and when finished I did my best to cram it back into my purse. Our flight was very delayed and we were rebooked twice and lots of airport time. As I got off the flight I noticed that I had dropped my wallet( containing all my credit & debit bank cards + 240 US dollars & 240 Euros. I spoke to customer service & Lost &Found. I was denied access to look on the plane. Therefore I have been without money and given no help. Paula Bjork 503.545.6698

Dinner was good by air travel standards but breakfast was too light and heavy on carbs/sugar.

Used to love Lufthansa, but Rowe are too close together in Economy and passengers are allowed to recline their seats so far back it is impossible for those behind them to even reach for carry-on essentials during flight - except for meal service when flight attendants ask for seat backs to be raised, we can’t sleep on planes so this flight was most uncomfortable ever! Rod Rose

So far so good. I missed my flight because of the Lufthansa diversion. United helped me to figure out how to get accommodations from Lufthansa for my long layover. They help me book appropriate onward flight.

Horrible crowding on the seats, headphones provided did not fit or work in the entertainment center, seriously the most uncomfortable flight I have taken in a LONG time. The people in front of me were literally 5 inches from my face the entire flight. Did they change their seats recently? I remember it being tight but wow this was a whole new level. Also I am a 5'3" small woman so I can't even imagine a larger person dealing with that for 11 hrs.

This was my connection flight that was moved time ahead for a almost entire day so I lost it and I had to purchase new ticket once I landed in Copenhagen since nobody wanted to take responsibility for moving flight in that way so it’s impossible to make it. Very poor job by Underpricer, Air Serbia and SAS.

I purchased an exit row seat and priority boarding, about 3 months in advance. Without any communication whatsoever, my seat was moved to row 2, when I checked my reservation 2-3 days before departure. As no exit row seats were available anymore, I selected a seat 1C. However, once at the airport, I was issued maybe the worst possible seat, 29E, middle seat, one row before the last. It is not worth my time to request the refund on the ancillary purchase, I am simply done flying with Air Serbia. Also there was no boarding process to speak of at all, or online check in.

Lacking online check in, had to wait an hour in order to check in on the counter even without language.

This flight was better, plane was newer and didn’t have broken parts. Flight crew was very attentive and friendly.

Seats are very small and uncomfortable so such a long flight. My tray table was broken and taped up. Flight attendant untaped it to put my tray on. I taped it back up when done. The armrest between seats was broken and metal exposed. I will not book Air Serbia again.

Our flight was delayed from 1st July to 2nd July. But I wasnt informed! Checked my emails,every detail but I was definitely not informed! I and my family went to the airport on 1st July and learned that rhe flight is delayed to 2nd July at the airport! I am going to complain about this. I had to stay ın Kraljevo one more night. Luckily we could find a room. What ıf We couldn't?

To be honest, it was a fair flight, nothing more, nothing less. Since the route is short, I can accept poor in-flight service. The Belgrade airport is currently undergoing extensive reconstruction, which may result in some minor disruptions, but progress is expected to be made within the foreseeable future.

Omg my flight was delayed from 4pm to 9:45 pm with no explanation- that is ridiculous

Very poor embarkation in Belgrade , employees not friendly, not well organized. The flight was delayed by over 2.5 hours and the employees at the air Serbia desk at Belgrade were unhelpful, disinterested and all appeared more concerned about their snack (all were munching something) than assisting passengers

They didnt let me do the check in online. That was terrible cause I was coming from another country,so I had to go oit the airport and go un again through controls. They Also made me pay more for my bag which was very light. And the personal was not so nice.

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.
6/17Mon
3 stops
54h 05mORD-SOF
$379
5/8Wed
3 stops
54h 15mORD-SOF
$399
5/11Sat
3 stops
48h 15mORD-SOF
$424
5/5Sun
2 stopsSWISS
39h 30mORD-SOF
$594
5/8Wed
1 stopLufthansa
17h 35mORD-SOF
$645
5/5Sun
2 stopsLOT
32h 10mORD-SOF
$648
5/5Sun
1 stopSWISS
11h 40mORD-SOF
$655
5/6Mon
1 stopLufthansa
13h 20mORD-SOF
$660
6/17Mon
1 stopLOT
12h 45mORD-SOF
$797
6/10Mon
2 stopsBritish Airways
28h 15mORD-SOF
$1,043

Search by stops

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Last minute flights from O'Hare Intl 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.
4/25Thu
multi-stop
25h 01mORD-SOF
5/5Sun
multi-stop
14h 15mSOF-ORD
$733
4/25Thu
multi-stopSWISS
30h 50mORD-SOF
5/5Sun
multi-stopSWISS
35h 10mSOF-ORD
$736
4/25Thu
multi-stop
25h 01mORD-SOF
5/5Sun
multi-stop
22h 44mSOF-ORD
$738
4/25Thu
multi-stopSWISS
32h 55mORD-SOF
5/5Sun
multi-stopSWISS
35h 10mSOF-ORD
$755
4/25Thu
multi-stop
20h 50mORD-SOF
5/5Sun
multi-stop
23h 45mSOF-ORD
$777
4/29Mon
multi-stopUnited Airlines
21h 00mORD-SOF
5/4Sat
multi-stopUnited Airlines
55h 50mSOF-ORD
$816
4/29Mon
multi-stopBritish Airways
22h 47mORD-SOF
5/4Sat
multi-stopBritish Airways
52h 40mSOF-ORD
$818
4/27Sat
multi-stopITA Airways
18h 10mORD-SOF
4/29Mon
multi-stopITA Airways
37h 00mSOF-ORD
$938
4/27Sat
multi-stopAustrian Airlines
23h 35mORD-SOF
4/30Tue
multi-stopAustrian Airlines
32h 55mSOF-ORD
$2,497
4/27Sat
multi-stopAustrian Airlines
21h 35mORD-SOF
5/1Wed
multi-stopAustrian Airlines
13h 20mSOF-ORD
$2,510

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Chicago O'Hare Airport - Sofia Flights

Departure:

Chicago O'Hare Airport (ORD)United States

Destination:

Sofia (SOF)Bulgaria

Return flight deals:

Sofia - Chicago O'Hare Airport

Cabin classes:

Browse destinations: