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ORD - SOF

$281 Find cheap flights from Chicago O'Hare Airport to Sofia

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 9/21. 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 6/15
Sat 6/22

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 42,211,976 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
9:00 am - 7:05 pmORD-SOF
26h 05m1 stop
5:25 pm - 12:50 pmSOF-ORD
27h 25m1 stop
$579British Airways
Find Deal
Mon, Nov 11 - Mon, Nov 25
6:25 pm - 7:05 pmORD-SOF
16h 40m2 stops
5:25 pm - 1:55 pmSOF-ORD
28h 30m1 stop
$582British Airways
Find Deal
Mon, Nov 11 - Mon, Nov 25
11:25 am - 2:55 pmORD-SOF
19h 30m1 stop
9:20 am - 9:40 amSOF-ORD
32h 20m1 stop
$591Turkish Airlines
Find Deal
Tue, Aug 13 - Wed, Oct 16
11:25 am - 8:30 amORD-SOF
13h 05m1 stop
10:00 am - 7:25 pmSOF-ORD
16h 25m1 stop
$598Turkish Airlines
Find Deal
Sun, Oct 20 - Wed, Oct 30
5:10 pm - 5:55 pmORD-SOF
40h 45m2 stops
6:40 pm - 3:10 pmSOF-ORD
28h 30m1 stop
$622LOT
Find Deal
Fri, Sep 13 - Sat, Sep 21
9:40 pm - 5:55 pmORD-SOF
12h 15m1 stop
6:40 pm - 3:10 pmSOF-ORD
28h 30m1 stop
$642LOT
Find Deal
Fri, Sep 13 - Sat, Sep 21
6:15 pm - 6:45 pmORD-SOF
16h 30m2 stops
6:00 am - 9:55 amSOF-ORD
35h 55m2 stops
$666United Airlines
Find Deal
Sat, Oct 12 - Sat, Oct 26
3:35 pm - 12:10 pmORD-SOF
12h 35m1 stop
6:00 am - 12:30 pmSOF-ORD
14h 30m1 stop
$682Lufthansa
Find Deal
Mon, Aug 12 - Wed, Sep 11
3:35 pm - 12:10 pmORD-SOF
12h 35m1 stop
6:00 am - 12:15 pmSOF-ORD
14h 15m1 stop
$712Lufthansa
Find Deal
Sun, Jul 28 - Wed, Oct 9
7:35 am - 11:00 pmORD-SOF
31h 25m2 stops
6:00 am - 2:15 pmSOF-ORD
16h 15m1 stop
$725United Airlines
Find Deal
Tue, Aug 13 - Wed, Oct 9

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 Saturday. 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 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 $1,282 and $1,214 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 17 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 $525. KAYAK users also found Chicago O'Hare Airport to Sofia round-trip flights on British Airways from $579 and on American Airlines from $588.

Good to know

Low season

February

High season

June

Cheapest flight

$281
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 54% 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 $281 for a one-way ticket and $579 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?

    Munich 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 $1,062 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 $891 and an overall rating of 7.6.

  • 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.
7.6
Austrian AirlinesOverall score based on 1053 reviews
8.1Crew
6.9Entertainment
6.9Food
7.5Comfort
7.6Boarding
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 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

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).

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!

I was in business class, without the business class amenities. Large seat with lots of legroom, but no TV or bed. Food was okay, but I did enjoy the Turkish red wine.

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.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

I’ve had a couple flights this week on United that were delayed by an hour or more

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.

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 ."

Second time I took this flight, and they lost my luggage both times. Waiting for my suitcase now, last time it took two days to get it back.

Everything could be better. The plain was in Orlando for 3 hours prior to boarding. After boarding all the passengers they found out that plane has a mechanical problem. After an hour the problem was solved, the pilot comes on and states, (We have to go back to the gate and take on more fuel!) Are you kidding me???? Who they have for pilots, Boy scouts?? I barely made my connecting flight to Vienna, but my suitcase did not. I'm still waiting for it, in Gyor, Hungary. Am I having fun yet?? Other passenger were in the same binned. I travelled all over the world both for business and pleasure with all types of airlines. By far of all the carriers I travelled with, Discover is the worst. I'm contemplating to bight the bullet and go back to the US with a different carrier. For International flights, the seats are made for little people. The person in front of me had his seat reclined the whole way, I felt like he was sitting in my lap. For closing, I would not let my dog travel with Discover, yet alone recommend it to an other person. Does it sound like I'm frustrated, Think about having to travel back to the US with them. I'm sure I'll not hear back from you, because nobody wants to hear about bad news, but with all the hype Discover puts out there about their services, nothing could be further from the truth. Joseph A. Nagy

Only problem we experienced was not anything to do with Lufthansa. When changing planes in Frankfurt we spent over an hour on passport control line. Lufthansa did a marvelous job on everything from keeping me informed via texts, to terrific cabin crew.

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.

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.
9/21Sat
2 stops
26h 10mORD-SOF
$281
7/29Mon
2 stops
29h 45mORD-SOF
$394
7/30Tue
1 stopTurkish Airlines
19h 30mORD-SOF
$562
8/4Sun
1 stopTurkish Airlines
13h 05mORD-SOF
$584
7/18Thu
2 stopsLOT
36h 45mORD-SOF
$613
8/4Sun
2 stopsLOT
40h 45mORD-SOF
$627
6/3Mon
1 stopAustrian Airlines
11h 20mORD-SOF
$662
6/16Sun
1 stopAustrian Airlines
17h 40mORD-SOF
$803
6/3Mon
2 stopsUnited Airlines
18h 15mORD-SOF
$823
6/3Mon
2 stopsUnited Airlines
20h 20mORD-SOF
$828

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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.
5/19Sun
multi-stopITA Airways
13h 05mORD-SOF
9/15Sun
multi-stopITA Airways
27h 10mSOF-ORD
$690
5/17Fri
multi-stopBritish Airways
15h 50mORD-SOF
9/24Tue
multi-stopBritish Airways
24h 30mSOF-ORD
$699
5/17Fri
multi-stopLufthansa
17h 35mORD-SOF
5/24Fri
multi-stopLufthansa
14h 15mSOF-ORD
$716
5/17Fri
multi-stopUnited Airlines
17h 35mORD-SOF
9/13Fri
multi-stopUnited Airlines
14h 30mSOF-ORD
$722
5/18Sat
multi-stopUnited Airlines
16h 10mORD-SOF
9/12Thu
multi-stopUnited Airlines
14h 30mSOF-ORD
$726
5/17Fri
multi-stopAustrian Airlines
15h 00mORD-SOF
9/18Wed
multi-stopAustrian Airlines
32h 55mSOF-ORD
$728
5/17Fri
multi-stopLufthansa
17h 10mORD-SOF
10/3Thu
multi-stopLufthansa
14h 15mSOF-ORD
$749
5/17Fri
multi-stopAustrian Airlines
15h 00mORD-SOF
9/30Mon
multi-stopAustrian Airlines
26h 35mSOF-ORD
$788
5/17Fri
multi-stopLOT
12h 15mORD-SOF
9/28Sat
multi-stopLOT
28h 30mSOF-ORD
$810
5/18Sat
multi-stopLOT
36h 45mORD-SOF
9/28Sat
multi-stopLOT
28h 30mSOF-ORD
$817

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Chicago O'Hare Airport - Sofia Flights

Departure:

Chicago O'Hare Airport (undefined)United States

Destination:

Sofia (SOF)Bulgaria

Return flight deals:

Sofia - Chicago O'Hare Airport

Cabin classes:

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