Cheap flights from Chicago to Sofia from $268
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 10/15. 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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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?
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 $565, 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 March instead. Flights to Sofia in March, while not as cheap as those in February, still average around $588.
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. 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 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 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $780 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 $736 on momondo.
What is the cheapest airline that flies from Chicago to Sofia?
Lufthansa, Air France, and SWISS are the most popular carriers operating from Chicago to Sofia
What airlines fly to Sofia?
Turkish Airlines, LOT and Lufthansa 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 31% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 10 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.
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
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 11h 20m.
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 July 2025, there are 10 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 Turkish Airlines, representing 26% of all bookings. The subsequent popular airlines are Lufthansa at 23%, LOT at 20%, and United Airlines at 14%.
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 $494 | Free Cancellation | Rating 7.3 3,895 reviews | |||
| PriceFrom $498 | Free Cancellation | Rating 7.5 1,473 reviews | |||
| PriceFrom $533 | Free Cancellation | Rating 7.8 1,366 reviews | |||
| PriceFrom $572 | Free Cancellation | Rating 7.6 1,093 reviews | |||
| PriceFrom $596 | Free Cancellation | Rating 7.5 1,654 reviews | |||
| PriceFrom $598 | Free Cancellation | Rating 6.8 7,207 reviews | |||
| PriceFrom $605 | Free Cancellation | Rating 7.6 809 reviews | |||
| PriceFrom $613 | Free Cancellation | Rating 6.6 7,093 reviews | |||
| PriceFrom $616 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $652 | Free Cancellation | Rating 6.3 197 reviews |
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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.