$269 Flights from Chicago (CHIA) to Sofia (SOF)

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Flight deals from Chicago to Sofia

Looking for a cheap last-minute deal or the best round-trip flight from Chicago to Sofia? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Chicago to Sofia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Sofia flights are currently cheapest in March.

Chicago to Sofia: Alternative routes

Compare routes from Chicago to Sofia below. You may find an airport to fly into that's cheaper, faster, or easier than Sofia.

Chicago to Sofia: Flight information

The things to know before you go.
Cheapest flight found$269
Cheapest month to flyMarch

Finding cheap flights from Chicago to Sofia: Frequently asked questions

The best price we found for a round-trip flight from Chicago to Sofia is $512. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Chicago to Sofia. But we found flights with one stop from $512.
There are no flights flying from Chicago to Sofia, as of February 2026.
The cheapest month to fly from Chicago to Sofia is usually February.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Sofia Airport on Wednesday, February 11, 2026.
No airlines currently offer direct flights between Chicago and Sofia Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sofia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Sofia is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Sofia is Turkish Airlines.

Traveling from Chicago to Sofia Airport (SOF): What you need to know

  • There are two main airports you can fly out of in Chicago. Check out your options leaving from O'Hare International Airport (ORD) or Chicago Midway International Airport (MDW) when searching for a flight from Chicago to Sofia Airport (SOF).

  • Sofia Airport is located in Sofia. The city operates on the UTC+2 timezone and is seven hours ahead of Chicago.

  • To ensure you get on your flight from Chicago to SOF, allow plenty of time for things like baggage drop and finding your gate. Turning up two hours before international departures and one hour before domestic flights is the general rule.

  • Peak travel periods mean busier airports, so show up even earlier. Give yourself at least two hours before a domestic flight and four hours for an international journey to stick to your schedule.

Airports in Chicago

O'Hare International Airport (ORD)

  • A stopover is the perfect opportunity to take a travel break and maybe even explore a different city. When searching for cheap flights from Chicago to SOF leaving from O'Hare International Airport (ORD), deselect the 'Direct flights only' box to get ideas for where to visit along the way. Your journey might pause in:

    • Frankfurt Airport (FRA)

    • Franz Josef Strauss Airport (MUC)

    • Leonardo da Vinci-Fiumicino Airport (FCO)

  • ORD is around 25 miles from central Chicago. If you're driving, ride-sharing or catching a cab from the center, it'll take you 35 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 55 minutes.

  • Want a leisurely start to your trip? Stay near O'Hare International Airport. Whether you're boarding an early flight from Chicago to Sofia Airport or just don't want to be rushed, these hotels are just the thing:

  • Of the flights that depart from O'Hare International Airport, 74.85% arrive as scheduled at their destination.

  • ORD's address is 10000 West O'Hare.

Chicago Midway International Airport (MDW)

  • MDW is around 12 miles from central Chicago. It takes 20 minutes or so to get to the airport driving from the city center. Public transport takes approximately 45 minutes.

  • Kick off your vacation early with an extra night away from home. Before your Chicago to SOF flight, unwind in one of these hotels near Chicago Midway International Airport:

  • Looking at how often flights stay on schedule, Chicago Midway International Airport has an on-time arrival rate of 77.88%.

  • The address for MDW is 5700 South Cicero.

Chicago Rockford International Airport (RFD)

  • RFD is roughly 85 miles from central Chicago. Driving from the city center to the airport takes about 1 hour 25 minutes. If you're thinking about taking public transport, you can expect a journey of around 4 hours 15 minutes.

  • Take the uncertainty out of departure day — stay near Chicago Rockford International Airport and know you'll reach the terminal with time to spare. Check in to one of these hotels the day before if you've booked an early Chicago to Sofia Airport flight:

  • The on-time performance rating of RFD is 76.19%. In other words, that's how frequently flights departing this airport arrive as planned.

  • The address of Chicago Rockford International Airport is 2 Airport Cir.

About Sofia Airport (SOF)

Getting from Sofia Airport (SOF) to central Sofia

  • From Sofia Airport, central Sofia is around 7 miles away. It takes about 15 minutes to reach the city center by car.

  • If you're traveling by public transport, expect a journey time of about 35 minutes.

How to find the cheapest flights from Chicago to Sofia Airport (SOF)

  • $269 is the best price for a one-way ticket from Chicago to Sofia Airport. A return flight starts from $512. These prices may change depending on availability and demand.

  • To pick up cheap flights from Chicago to SOF, book in advance. Airlines typically offer lower fares when flights first go on sale.

  • If you have some flexibility with your travel dates, try using the 'Whole month' tool. It'll show you the lowest price across the month when searching for your Chicago to Sofia Airport ticket.

  • You don't need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll let you know when a better deal is available on plane tickets from Chicago to SOF.

  • Save money on your flight from Chicago to Sofia Airport by using the search filters. Select your ideal duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Chicago to Sofia Airport (SOF)

  • April is the quietest month for flights from Chicago to Sofia Airport (SOF), while August is the busiest. Figure out the ideal time to go to Sofia based on whether you like a bustling atmosphere or a more laid-back vibe.

  • Before locking in your Chicago to SOF plane ticket, consider the type of weather you enjoy. August is the warmest month in Sofia, with temperatures ranging from 57ºF to 86ºF.

  • If you like cooler conditions, look for a cheap ticket from Chicago to Sofia Airport in January when temperatures are between 12ºF and 45ºF.

More about Sofia

  • When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Sofia right here. Browse these options as soon as you've locked in your flight from Chicago to Sofia Airport:

  • Free Sofia Tour and Boyana Church are a couple of top-rated attractions to put on your Sofia to-do list. Keep the adventure rolling by checking out National Historical Museum.

Explore more of Bulgaria

  • Plovdiv is just one of the many places in Bulgaria waiting to be discovered after you've seen Sofia. Around 80 miles away to the south-east, its best attractions include Plovdiv Old Town, Plovdiv Roman Theatre and Ancient Plovdiv Municipal Institute.

  • Stara Zagora is another essential stop in Bulgaria and is around 120 miles east of Sofia. No journey is complete without dropping by Парк „5-и октомври“ (Градската градина), Zagorka Lake and The Zelen Klin Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.