Cheap flights from Illinois to Sofia from $329
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Sofia departing on 7/6. 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 Illinois 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 cheapest month to fly to Sofia?
The cheapest month to fly to Sofia from Illinois 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 Illinois 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 Illinois. 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 Illinois 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 Illinois 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 Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $782 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Illinois for as low as $736 on momondo.
What is the cheapest airline that flies from Illinois to Sofia?
British Airways, SWISS, and Air Canada are the most popular carriers operating from Illinois to Sofia
What airlines fly to Sofia?
Turkish Airlines, LOT and Lufthansa are the top three most popular airlines that fly to Sofia from Illinois according to our data. Turkish Airlines is the first choice among our users, with 30% 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.
Cheap Illinois to Sofia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Sofia
When did momondo last update prices for flights from Illinois to Sofia Airport?
Prices for flights from Illinois to Sofia Airport refresh daily.
How many operators does momondo search for flights from Illinois to Sofia Airport?
As of June 2025, there are 10 operators available to choose from for flights from Illinois to Sofia Airport.
How old do you have to be to fly from Illinois to Sofia Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from Illinois to Sofia
Compare and see reviews for airlines that fly from Illinois to Sofia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $493 | Free Cancellation | Rating 7.3 3,866 reviews | |||
| PriceFrom $498 | Free Cancellation | Rating 7.5 1,469 reviews | |||
| PriceFrom $573 | Free Cancellation | Rating 7.6 1,082 reviews | |||
| PriceFrom $578 | Free Cancellation | Rating 7.8 1,367 reviews | |||
| PriceFrom $596 | Free Cancellation | Rating 7.5 1,643 reviews | |||
| PriceFrom $609 | Free Cancellation | Rating 7.6 806 reviews | |||
| PriceFrom $613 | Free Cancellation | Rating 6.6 7,047 reviews | |||
| PriceFrom $614 | Free Cancellation | Rating 6.8 7,175 reviews | |||
| PriceFrom $617 | Free Cancellation | Rating 7.4 8,825 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 Illinois to Sofia?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Sofia. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Illinois to Sofia with flexible booking policies on momondo?
momondo does allow users to show only those flights to Sofia from Illinois which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Illinois to Sofia?
momondo helps you find the best flight between Illinois 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 Illinois to Sofia right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Illinois to Sofia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.