$351 Find Cheap Flights from Illinois to Bulgaria

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Useful Info

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$351
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Chicago O'Hare Airport to Sofia

FAQs for booking flights from Illinois to Bulgaria

  • How does KAYAK find such low prices on flights from Illinois to Bulgaria?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Bulgaria.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Bulgaria?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Bulgaria is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Bulgaria?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Illinois to Bulgaria with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Bulgaria?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to Bulgaria up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Bulgaria?

    Based on KAYAK data, the cheapest day to fly to Bulgaria is Thursday where round-trip tickets can be as cheap as $885. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $1,047 on average.

  • What is the cheapest time of day to fly to Bulgaria?

    The cheapest time of day to fly to Bulgaria is generally in the morning, when round-trip flights cost $751 on average. Morning departures are around 29% cheaper than evening flights, on average. The most expensive time of day to fly to Bulgaria is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,107.

  • What is the cheapest month to fly from Illinois to Bulgaria?

    The cheapest month for flights from Illinois to Bulgaria is November, when tickets cost $576 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,178 and $1,054 respectively.

  • How far in advance should I book a flight from Illinois to Bulgaria?

    To get a below average price on the flight from Illinois to Bulgaria, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to Bulgaria?

    An average nonstop flight from Illinois to Bulgaria takes 19h 00m, covering a distance of 5301 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Sofia (SOF) with an average flight time of 11h 20m.

  • What are the most popular destinations in Bulgaria?

    Based on KAYAK flight searches, the most popular destination is Sofia (91% of total searches to Bulgaria). The next most popular destinations are Varna (7%) and Burgas (2%).

Book cheap flights from Illinois to Bulgaria

Recent round-trip flight deals

9/17Wed
2 stops
15h 25mORD-SOF
10/1Wed
2 stops
21h 56mSOF-ORD
$486
9/16Tue
2 stops
15h 25mORD-SOF
9/30Tue
2 stops
27h 13mSOF-ORD
$490
10/6Mon
1 stopLufthansa
17h 20mORD-SOF
10/16Thu
1 stopLufthansa
20h 15mSOF-ORD
$522
9/30Tue
1 stopAustrian Airlines
11h 20mORD-SOF
10/20Mon
1 stopAustrian Airlines
32h 55mSOF-ORD
$527
9/29Mon
2 stopsAir Canada
16h 00mORD-SOF
10/7Tue
2 stopsAir Canada
29h 06mSOF-ORD
$528
9/29Mon
1 stopUnited Airlines
17h 20mORD-SOF
10/8Wed
1 stopUnited Airlines
12h 45mSOF-ORD
$530
7/16Wed
1 stopLufthansa
12h 25mORD-SOF
9/24Wed
1 stopLufthansa
14h 40mSOF-ORD
$532
9/29Mon
2 stopsAir Canada
16h 00mORD-SOF
10/8Wed
2 stopsAir Canada
16h 40mSOF-ORD
$536
9/15Mon
1 stopAustrian Airlines
23h 35mORD-SOF
9/29Mon
2 stopsAustrian Airlines
31h 35mSOF-ORD
$537
9/17Wed
2 stopsUnited Airlines
16h 57mORD-SOF
10/1Wed
1 stopUnited Airlines
12h 45mSOF-ORD
$540

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Recent one-way flight deals

7/30Wed
2 stopsAir Canada
23h 55mORD-SOF
$351
7/22Tue
3 stops
29h 50mORD-BOJ
$355
7/17Thu
2 stops
38h 20mORD-SOF
$355
7/30Wed
1 stopSWISS
11h 45mORD-SOF
$356
7/22Tue
1 stopLufthansa
11h 55mORD-BOJ
$358
7/30Wed
2 stopsUnited Airlines
20h 35mORD-SOF
$362
7/22Tue
1 stopAustrian Airlines
12h 25mORD-VAR
$368
7/22Tue
2 stopsLufthansa
17h 35mORD-BOJ
$397
7/25Fri
1 stopUnited Airlines
21h 00mORD-SOF
$409
6/24Tue
1 stopSWISS
11h 45mORD-SOF
$785

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Last minute flights from Illinois to Bulgaria

Last minute flight, train and bus deals

6/22Sun
multi-stopUnited Airlines
17h 20mORD-SOF
8/26Tue
multi-stopUnited Airlines
14h 35mSOF-ORD
$867
6/22Sun
multi-stopSWISS
33h 25mORD-SOF
8/25Mon
multi-stopSWISS
28h 40mSOF-ORD
$872
6/22Sun
multi-stopAir Canada
24h 40mORD-SOF
8/26Tue
multi-stopAir Canada
35h 32mSOF-ORD
$873
6/22Sun
multi-stopAir Canada
24h 40mORD-SOF
8/25Mon
multi-stopAir Canada
27h 16mSOF-ORD
$889
6/21Sat
multi-stopLufthansa
16h 20mORD-SOF
9/27Sat
multi-stopLufthansa
12h 45mSOF-ORD
$923
6/21Sat
multi-stopLufthansa
16h 20mORD-SOF
8/26Tue
multi-stopLufthansa
14h 35mSOF-ORD
$941
6/21Sat
multi-stopITA Airways
18h 10mORD-SOF
8/29Fri
multi-stopITA Airways
27h 10mSOF-ORD
$943
6/21Sat
multi-stop
16h 20mORD-SOF
9/27Sat
multi-stop
21h 56mSOF-ORD
$1,000
6/21Sat
multi-stopITA Airways
18h 10mORD-SOF
8/31Sun
multi-stopITA Airways
27h 10mSOF-ORD
$1,028
6/18Wed
multi-stop
25h 52mORD-SOF
7/16Wed
multi-stop
13h 05mSOF-ORD
$1,220

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Everything you need to know for your flight to Bulgaria

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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