SOF - ORD

$379 Find Cheap Flights from Sofia to Chicago O'Hare Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to O'Hare Intl departing on 9/16. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$802
Typical prices: $695-$842
Turkish Airlines
Sat 10/24Sun 11/15
SOF - ORD • 1 stop
Cheapest one-way
$379
Typical prices: $668-$787
Multiple Airlines
Wed 9/16
SOF - ORD • 3 stops
Top airlines
Cheapest • from $802 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Sofia and O'Hare Intl. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $619 (round-trip)
Shortest trip • 13h 05m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 12% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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We hope you love your trip to O'Hare Intl!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to O'Hare Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to O'Hare Intl

Sat, Oct 24 - Sun, Nov 15
Turkish Airlines Logo
3:50 pm - 11:00 am
SOF
-
ORD
27h 10m
1 stop
Turkish Airlines Logo
11:45 am - 8:55 pm
ORD
-
SOF
25h 10m
1 stop
$802Turkish Airlines
Fri, Nov 20 - Sun, Nov 29
Turkish Airlines Logo
11:55 am - 10:00 am
SOF
-
ORD
30h 05m
1 stop
Turkish Airlines Logo
8:15 pm - 3:10 pm
ORD
-
SOF
34h 55m
1 stop
$803Turkish Airlines
Thu, Sep 17 - Sat, Oct 3
LOT Logo
2:35 pm - 3:10 pm
SOF
-
ORD
56h 35m
2 stops
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m
1 stop
$804LOT
Wed, Sep 16 - Wed, Sep 30
LOT Logo
2:35 pm - 3:10 pm
SOF
-
ORD
56h 35m
2 stops
LOT Logo
9:50 pm - 6:00 pm
ORD
-
SOF
12h 10m
1 stop
$804LOT
Thu, Aug 27 - Tue, Sep 15
Lufthansa Logo
6:30 am - 7:55 pm
SOF
-
ORD
21h 25m
1 stop
Lufthansa Logo
10:30 pm - 10:50 pm
ORD
-
SOF
16h 20m
1 stop
$805Lufthansa
Wed, Oct 7 - Tue, Oct 13
Multiple Airlines Logo
6:10 am - 7:15 pm
SOF
-
ORD
21h 05m
2 stops
Multiple Airlines Logo
3:45 pm - 1:25 am
ORD
-
SOF
25h 40m
2 stops
$809Multiple Airlines
Wed, Oct 21 - Sat, Nov 21
Lufthansa Logo
6:20 am - 11:00 am
SOF
-
ORD
12h 40m
1 stop
Lufthansa Logo
6:00 pm - 1:15 pm
ORD
-
SOF
11h 15m
1 stop
$812Lufthansa
Thu, Sep 10 - Wed, Sep 23
Multiple Airlines Logo
5:15 pm - 4:00 pm
SOF
-
ORD
30h 45m
2 stops
Multiple Airlines Logo
6:00 pm - 3:00 am
ORD
-
SOF
25h 00m
3 stops
$812Multiple Airlines
Fri, Oct 16 - Sat, Nov 7
United Airlines Logo
6:20 am - 11:00 am
SOF
-
ORD
12h 40m
1 stop
United Airlines Logo
1:15 pm - 1:15 pm
ORD
-
SOF
16h 00m
2 stops
$837United Airlines
Thu, Sep 10 - Wed, Sep 23
United Airlines Logo
6:30 am - 12:55 pm
SOF
-
ORD
14h 25m
1 stop
United Airlines Logo
10:30 pm - 10:50 pm
ORD
-
SOF
16h 20m
1 stop
$838United Airlines
Booking Insights

KAYAK's insights & trends for Sofia to O'Hare Intl flights

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

How much is a round-trip flight from Sofia to Chicago O'Hare Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Sofia to Chicago O'Hare Intl Airport departing in October.

Flight prices are below average for this route right now.

Flights to Chicago O'Hare Intl Airport from Sofia usually cost between $824 and $991 in October.
The lowest price found in the past 5 days was $802 on Turkish Airlines (Oct 24-Nov 15).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sofia to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sofia to Chicago O'Hare Intl Airport is November, where tickets cost $707 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $885 and $865 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sofia to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sofia to Chicago O'Hare Intl Airport, you should book around 5 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low season

August

Cheapest flight

$379
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Sofia to Chicago O'Hare Airport

When to book flights from Sofia to O'Hare Intl

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

FAQs for booking Sofia to Chicago O'Hare Airport flights

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

    In the last 5 days, the lowest price for a flight from Sofia to Chicago O'Hare Intl Airport was $379 for a one-way ticket and $802 for a round-trip.

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

    Yes

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

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

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

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

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

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

  • Which is the best airline for flights from Sofia to Chicago, KLM or LOT?

    The two airlines most popular with KAYAK users for flights from Sofia to Chicago are KLM and LOT. With an average price for the route of $763 and an overall rating of 7.8, KLM is the most popular choice. LOT is also a great choice for the route, with an average price of $747 and an overall rating of 7.6.

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

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sofia to Chicago O'Hare Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Sofia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sofia to Chicago O'Hare Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago O'Hare Airport with an airline and back to Sofia with another airline. Booking your flights between Sofia and ORD can sometimes prove cheaper using this method.

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

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago O'Hare Airport from Sofia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Sofia to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from Sofia to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sofia to O'Hare Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1550 reviews
8.4Crew
7.7Comfort
7.3Food
7.2Entertainment
7.8Boarding
Airline reviews

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

10.0 ExcellentEmily, Jul 2026
ORD - MSP
Read more KLM reviews

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

Flight lead was a gentleman with silver hair and he went out of his way to shake hands and interact with each passenger seated in business class. A medical emergency took place during our flight and he handled it with perfect poise and professionalism. He was gracious and confidently competent. Just what you want from a leader,

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

It was operated by Delta. Boarding took a long time. How difficult can it be? Overall decent trip. Liked the Salt Lake City airport. Better option than Chicago for transfers.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Issue with boarding, group of passengers on a religious trip coming back to NYC kept trying to change seats, even standing when the plane was pushing back. Crew/Pilot kept very good composure, some passengers got aggravated and started venting out loud but this group created a serious security risk. Crew/Pilot should've been more stringent and called in security or remove them from the flight.

Amazing crew, delicious food and drink selection. 12hr felt more like a 4hrs. Comfortable beds. Can’t wait for the new business class cabin

The seat was paid for but given for some different person .

Krakow airport is very disorganized. nice seats. friendly crew. long legs had screens. short leg did not

Flight was delayed for a hour from Warsaw, not sure why. When we landed in Chicago, plane was still on the runway for about half a hour. Took a while to get off.

No WiFi and ok comfort in business class. Home safe I guess that’s all that really matters.

I would like to be able to choose the seat before the flight without paying extra money. Family members should not to be separated from each other.

Flight was delayed by a hour could have been better addressed. Flight was fine with great service by the flight attendants

They broke my luggage. I’m pissed off about that. Service was slow and inconsistent.

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!

Horrible service at the baggage claim. Stuck on plane for an hour due to taxing and no gate.

I really would like it if they provided at least some limited free wi-fi.

Excellent food and service on my international flight. Most notable is the food provided by Turkish even for coach passengers is very good.

Food is very turkish. No regard for other natinalities taste and preference. The entertainment can be improved- it was the same menu on 10/8/25 and 10/25/25. The boarding is the worst in the airline industry- I suggest you ask your staff to and watch how other airlines do it.

We couldn’t fly to Chicago on our booked flight. The flight was overbooked.

Took forever to board. They made announcements without the loudspeaker and since the waiting room was full of screaming kids, no one could hear what they were saying. The business class sleeper seats were designed for tall skinny people. When partially reclined there was nowhere to rest my feet because they did not reach the footrest. and when fully reclined there wasn't room at my sides for my arms. Definitely one of the worst sleeper seats I have ever had.

About an hour delay but we made it to Chicago. I feel that the smaller connecting flights are the ones that cause the delays on the bigger planes that fly international.

One of the best flights I have been on in a while.

Here's a sample answer: "Honestly, I was really impressed with Turkish Airlines, but if I had to suggest one area for improvement, it would be: - *More efficient boarding process*: I noticed that boarding took a bit longer than expected, which might be frustrating for passengers with tight connections.

Not worth pay business class and get service economy class

Gluten free snack options and meals that offer both gluten free and dairy free.

Not a bad flight but a long delay boarding and taking off due to the pilot not arriving on time.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

The Wi-Fi did not work, so you weren't able to watch entertainment on your own device. They did not have wired headphones so you couldn't watch it on the in-seat entertainment screen either. There was plenty of time to do a drink and snag service but the flight attendants chose not to.

Great experience, boarding was fast and efficient, so much so that we arrived to Chicago very early

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

The seats on this flight weren’t as comfortable as we had expected. Even leaned back these seats left us feeling crappy in our backs. Also we had to use our own tablets for movies, but nothing in the seats in front of us to hold the tablets up.

The head rest is too big and cannot be placed differently/removed. Causes one head to tilt forward and increase back pain

Food was not great. Small seating area for business class

Very comfortable plane. The food was very good (for airplane food). The crew was great

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Everything could have been better. What needed to be wrong with United went wrong

It was good. The seats in economy weren’t bad

Very good. Comfortable and I felt well taken care of from start to finish

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Everything you need to know for your flight from Sofia to O'Hare Intl

Information on your arrival and departure airports