Cheap flights from Chicago to Sofia from $358
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 to Sofia departing on 11/4. 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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Lufthansa flights from Chicago to Sofia
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Fly from
Fly to
Route
Depart
Return
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Thu 11/5
12:45 pm-11:05 am
1 stop14h 20m
Sofia
Wed 11/11
9:30 am-6:20 pm
1 stop16h 50m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Tue 3/9
9:50 pm-6:20 pm
1 stop12h 30m
Sofia
Tue 3/23
6:25 am-2:10 pm
1 stop14h 45m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Tue 3/9
1:55 pm-1:25 pm
2 stops15h 30m
Sofia
Tue 3/23
6:25 am-7:52 pm
2 stops20h 27m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Mon 1/11
7:05 am-1:15 pm
2 stops22h 10m
Sofia
Mon 1/25
7:05 pm-6:25 pm
1 stop31h 20m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Wed 11/4
9:50 pm-1:50 pm
1 stop32h 00m
Sofia
Mon 11/16
6:40 pm-7:55 pm
1 stop33h 15m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Thu 3/11
12:45 pm-3:10 pm
1 stop18h 25m
Sofia
Thu 3/25
4:00 pm-11:00 am
1 stop26h 00m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Mon 11/9
9:50 pm-1:50 pm
1 stop32h 00m
Sofia
Mon 11/23
6:40 pm-7:55 pm
1 stop33h 15m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Tue 2/9
11:25 am-1:15 pm
2 stops17h 50m
Sofia
Tue 2/23
2:10 pm-11:15 pm
2 stops17h 05m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Fri 2/5
9:50 pm-10:55 pm
1 stop17h 05m
Sofia
Fri 2/19
6:25 am-1:10 pm
1 stop14h 45m
ChicagoSofia
ORD Chicago O'Hare Intl - SOF Sofia
ORDSOF
Chicago O'Hare Intl
Sat 4/3
8:50 pm-12:10 pm
2 stops31h 20m
Sofia
Sat 4/17
6:20 am-11:00 am
1 stop12h 40m
See travel insights to Sofia from
How to get the cheapest flight ticket from Chicago 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 and Sofia?
Prices are currently typical for flights on this route.
Typical prices usually range from $696 to $830.The lowest price recently found on this route was $701.
What is the cheapest month to fly to Sofia?
The cheapest month to fly to Sofia from Chicago is in February. Flight prices, which tend to average around $586, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Sofia from Chicago during January instead. Flights to Sofia in January, while not as cheap as those in February, still average around $616.
How far in advance should I book a flight from Chicago to Sofia?
You are more likely to see cheaper flights to Sofia from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $809 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Chicago for as low as $747 on momondo.
Can stopping save me money on Chicago to Sofia flights?
You could potentially save up to 10% on your flight if you consider stops on a Chicago to Sofia flight.
How have Chicago to Sofia flight prices changed over time?
As of October 2026, prices for Chicago to Sofia flights are approximately 16% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Chicago to Sofia?
Turkish Airlines is the most popular carrier operating from Chicago to Sofia
What airlines fly to Sofia?
Turkish Airlines, Lufthansa and LOT are the top three most popular airlines that fly to Sofia from Chicago according to our data. Turkish Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 12 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Chicago and Sofia?
Istanbul (IST) was the most common stop: 31% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Chicago to Sofia?
Flights via London (LHR) offer the lowest average round-trip price of $641.
Which layover airport has the shortest travel time from Chicago to Sofia?
Flights connecting via Vienna (VIE) have the shortest average one-way travel time: 11h 52m.
Which layover airport has the shortest connection time from Chicago to Sofia?
Warsaw (WAW) has the shortest average layover time for this route: 1h 28m.
When to book flights from Chicago to Sofia
Cheap Chicago to Sofia (CHI to SOF) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Sofia
Frequently asked questions about flying from Chicago to Sofia
How far is Chicago to Sofia by plane?
A flight from Chicago to Sofia will travel around 5185.9 mi. A reasonable flight in good conditions will take 12h 35m.
When did momondo last update prices for flights from Chicago to Sofia Airport?
Prices for flights from Chicago to Sofia Airport were last updated today.
How many operators does momondo search for flights from Chicago to Sofia Airport?
As of October 2026, there are 12 operators available to choose from for flights from Chicago to Sofia Airport.
How old do you have to be to fly from Chicago to Sofia Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago 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 to Sofia?
momondo data reveals that the most frequently booked airline on the route from Chicago to Sofia is Lufthansa, representing 27% of all bookings. The subsequent popular airlines are Turkish Airlines at 22%, United Airlines at 16%, and LOT at 16%.
Best airlines flying from Chicago to Sofia
Compare and see reviews for airlines that fly from Chicago to Sofia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $451 | Free Cancellation | Rating 7.1 3,049 reviews | |||
| PriceFrom $526 | Free Cancellation | Rating 7.4 4,455 reviews | |||
| PriceFrom $565 | Free Cancellation | Rating 7.5 2,094 reviews | |||
| PriceFrom $573 | Free Cancellation | Rating 6.7 8,255 reviews | |||
| PriceFrom $585 | Free Cancellation | Rating 7.5 1,650 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.6 1,194 reviews | |||
| PriceFrom $604 | Free Cancellation | Rating 7.4 10,319 reviews | |||
| PriceFrom $610 | Free Cancellation | Rating 6.8 8,271 reviews | |||
| PriceFrom $613 | Free Cancellation | Rating 7.8 1,580 reviews | |||
| PriceFrom $726 | Free Cancellation | Rating 6.1 238 reviews |
Traveling to a place near Sofia?
Book flights to Sofia if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Chicago to Sofia?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Sofia. momondo saves you time and could save you money on your trip.
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?
momondo helps you find the best flight between Chicago and Sofia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Chicago to Sofia right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Sofia, momondo offers a useful price alert feature which will track prices for flights to Sofia from Chicago and alert you when they change.