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Cheap flights from Chicago O'Hare Intl Airport to Sofia from $353

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Sofia departing on 12/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
9:50 pm - 6:20 pmORD-SOF
12h 30m1 stop
Lufthansa Logo
6:10 am - 3:20 pmSOF-ORD
17h 10m1 stop
$555Lufthansa
Find Deal
mié., ene. 14 - mié., ene. 28
Turkish Airlines Logo
8:20 pm - 8:50 pmORD-SOF
16h 30m1 stop
Turkish Airlines Logo
9:35 am - 6:15 pmSOF-ORD
16h 40m1 stop
$557Turkish Airlines
Find Deal
mar., feb. 24 - mié., abr. 22
Turkish Airlines Logo
11:50 am - 3:10 pmORD-SOF
19h 20m1 stop
Turkish Airlines Logo
4:00 pm - 10:05 amSOF-ORD
26h 05m1 stop
$558Turkish Airlines
Find Deal
vie., ene. 16 - vie., ene. 30
Lufthansa Logo
9:50 pm - 10:45 pmORD-SOF
16h 55m1 stop
Lufthansa Logo
6:10 am - 3:20 pmSOF-ORD
17h 10m1 stop
$559Lufthansa
Find Deal
dom., dic. 28 - dom., ene. 18
Air Serbia Logo
5:30 pm - 3:30 pmORD-SOF
14h 00m1 stop
Air Serbia Logo
4:05 pm - 2:25 pmSOF-ORD
30h 20m1 stop
$561Air Serbia
Find Deal
sáb., feb. 28 - mar., abr. 21
Lufthansa Logo
9:50 pm - 6:20 pmORD-SOF
12h 30m1 stop
Lufthansa Logo
6:05 am - 1:10 pmSOF-ORD
15h 05m2 stops
$563Lufthansa
Find Deal
mié., ene. 14 - mié., ene. 28
Multiple Airlines Logo
5:50 pm - 6:00 pmORD-SOF
16h 10m2 stops
Multiple Airlines Logo
6:05 am - 2:10 pmSOF-ORD
16h 05m1 stop
$564Multiple Airlines
Find Deal
jue., ene. 15 - jue., ene. 29
Multiple Airlines Logo
6:30 pm - 8:35 amORD-SOF
30h 05m3 stops
Multiple Airlines Logo
5:00 am - 5:20 pmSOF-ORD
20h 20m3 stops
$565Multiple Airlines
Find Deal
sáb., ene. 17 - sáb., ene. 31
Turkish Airlines Logo
11:50 am - 8:50 pmORD-SOF
25h 00m1 stop
Turkish Airlines Logo
9:40 pm - 11:05 amSOF-ORD
20h 25m1 stop
$568Turkish Airlines
Find Deal
vie., mar. 6 - lun., mar. 9
Multiple Airlines Logo
6:30 pm - 1:30 amORD-SOF
23h 00m2 stops
Multiple Airlines Logo
4:05 pm - 5:20 pmSOF-ORD
33h 15m3 stops
$569Multiple Airlines
Find Deal
sáb., ene. 10 - vie., ene. 16

Air Canada flights from Chicago O'Hare Intl Airport to Sofia

Our best Air Canada deals on Chicago O'Hare Intl Airport to Sofia flight tickets
Air Canada
Mar 3
ORD10:00 amChicago O'Hare Intl
24h 20m
2 stops
SOF6:20 pmSofia
Mar 25
SOF6:10 amSofia
21h 00m
2 stops
ORD8:10 pmChicago O'Hare Intl
$615
Find similar
Air Canada
Dec 7
ORD7:10 amChicago O'Hare Intl
27h 10m
2 stops
SOF6:20 pmSofia
Jan 16
SOF6:10 amSofia
45h 35m
2 stops
ORD7:45 pmChicago O'Hare Intl
$620
Find similar

SWISS flights from Chicago O'Hare Intl Airport to Sofia

Our best SWISS deals on Chicago O'Hare Intl Airport to Sofia flight tickets
SWISS
Feb 26
ORD5:50 pmChicago O'Hare Intl
56h 25m
2 stops
SOF10:15 amSofia
Mar 31
SOF1:15 pmSofia
34h 40m
1 stop
ORD3:55 pmChicago O'Hare Intl
$620
Find similar
SWISS
Nov 28
ORD5:50 pmChicago O'Hare Intl
32h 25m
2 stops
SOF10:15 amSofia
Mar 1
SOF11:00 amSofia
35h 10m
2 stops
ORD2:10 pmChicago O'Hare Intl
$640
Find similar
SWISS
Nov 28
ORD9:05 pmChicago O'Hare Intl
29h 10m
2 stops
SOF10:15 amSofia
Mar 3
SOF2:00 pmSofia
30h 45m
2 stops
ORD12:45 pmChicago O'Hare Intl
$644
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated noviembre 24, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

mié. 1/14

9:50 pm-6:20 pm

1 stop12h 30m

Sofia

mié. 1/28

6:10 am-3:20 pm

1 stop17h 10m

$555

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

mar. 2/24

8:20 pm-8:50 pm

1 stop16h 30m

Sofia

mié. 4/22

9:35 am-6:15 pm

1 stop16h 40m

$557

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

vie. 1/16

11:50 am-3:10 pm

1 stop19h 20m

Sofia

vie. 1/30

4:00 pm-10:05 am

1 stop26h 05m

$558

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

dom. 12/28

9:50 pm-10:45 pm

1 stop16h 55m

Sofia

dom. 1/18

6:10 am-3:20 pm

1 stop17h 10m

$559

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

sáb. 2/28

5:30 pm-3:30 pm

1 stop14h 00m

Sofia

mar. 4/21

4:05 pm-2:25 pm

1 stop30h 20m

$561

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

mié. 1/14

9:50 pm-6:20 pm

1 stop12h 30m

Sofia

mié. 1/28

6:05 am-1:10 pm

2 stops15h 05m

$563

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

jue. 1/15

5:50 pm-6:00 pm

2 stops16h 10m

Sofia

jue. 1/29

6:05 am-2:10 pm

1 stop16h 05m

$564

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

sáb. 1/17

6:30 pm-8:35 am

3 stops30h 05m

Sofia

sáb. 1/31

5:00 am-5:20 pm

3 stops20h 20m

$565

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

vie. 3/6

11:50 am-8:50 pm

1 stop25h 00m

Sofia

lun. 3/9

9:40 pm-11:05 am

1 stop20h 25m

$568

ChicagoSofia

ORD - SOF

ORDSOF

Chicago O'Hare Intl

sáb. 1/10

6:30 pm-1:30 am

2 stops23h 00m

Sofia

vie. 1/16

4:05 pm-5:20 pm

3 stops33h 15m

$569

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sofia from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and Sofia?

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Chicago O'Hare Intl Airport is in October. Flight prices, which tend to average around $634, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Sofia from Chicago O'Hare Intl Airport during January instead. Flights to Sofia in January, while not as cheap as those in October, still average around $637.

What is the cheapest day to depart on your flight to Sofia?

According to our data, Thursday is the cheapest day to fly to Sofia from Chicago O'Hare Intl Airport. The lowest ticket price found for a Thursday departure recently was $871. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Chicago O'Hare Intl Airport to Sofia on a Saturday will generally be more expensive and average around $1,039. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Sofia?

In the morning is the cheapest time of day to fly from Chicago O'Hare Intl Airport to Sofia when you can find flight prices for as low as $801. Flying to Sofia in the morning is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Sofia, so prices are often more expensive at around $1,145 per ticket.

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

You are more likely to see cheaper flights to Sofia from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $760 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Chicago O'Hare Intl Airport for as low as $713 on momondo.

How have Chicago O'Hare Intl Airport to Sofia flight prices changed over time?

As of November 2025, prices for Chicago O'Hare Intl Airport to Sofia flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to Sofia

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to Sofia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to Sofia (ORD to SOF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Sofia

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Sofia. There are no popular flight routes from Chicago O'Hare Intl Airport to Sofia.
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  • How far is Chicago O'Hare Intl to Sofia by plane?

    Chicago O'Hare Intl and Sofia are 5191.0 mi apart from one another. In terms of flight time, this usually takes a little over 11h 15m.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Sofia Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Sofia Airport refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Sofia Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Sofia Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Sofia Airport.

  • What documentation or ID do you need to fly to Sofia Airport?

    The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Chicago O'Hare Intl Airport to Sofia?

Best airlines flying from Chicago O'Hare Intl Airport to Sofia

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Sofia with momondo
Airline
Rating
Free Cancellation
Price
Turkish AirlinesPriceFrom $511Free CancellationRating
7.3
4,052 reviews
Search Turkish Airlines flights
KLMPriceFrom $533Free CancellationRating
7.7
1,420 reviews
Search KLM flights
LOTPriceFrom $570Free CancellationRating
7.5
1,139 reviews
Search LOT flights
Air FrancePriceFrom $585Free CancellationRating
7.4
1,497 reviews
Search Air France flights
LufthansaPriceFrom $590Free CancellationRating
6.8
7,592 reviews
Search Lufthansa flights
SWISSPriceFrom $593Free CancellationRating
7.5
1,790 reviews
Search SWISS flights
United AirlinesPriceFrom $600Free CancellationRating
7.4
9,044 reviews
Search United Airlines flights
Austrian AirlinesPriceFrom $606Free CancellationRating
7.6
874 reviews
Search Austrian Airlines flights
British AirwaysPriceFrom $611Free CancellationRating
6.7
7,535 reviews
Search British Airways flights
Air SerbiaPriceFrom $634Free CancellationRating
6.2
209 reviews
Search Air Serbia flights

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Bansko
Borovets
Velingrad
Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Sofia?

It is quick and easy to find Chicago to Sofia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sofia that suits you.

Can I find flights from Chicago to Sofia with flexible booking policies on momondo?

momondo does allow users to show only those flights to Sofia from Chicago which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Chicago to Sofia?

Once all potential Chicago to Sofia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Chicago to Sofia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Sofia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Lufthansa
Turkish Airlines
LOT
United Airlines
Air Serbia
Austrian Airlines
SWISS
KLM
British Airways
Air France