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Cheap flights from Chicago (CHI) to Sofia (SOF)

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How to find the cheapest flight from Chicago (CHI) to Sofia (SOF)

How to find the cheapest flight from Chicago (CHI) to Sofia (SOF)
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How to find the cheapest flight from Chicago (CHI) to Sofia (SOF)
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How to find the cheapest flight from Chicago (CHI) to Sofia (SOF)
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Cheap flights from Chicago to Sofia in December 2025 , January 2026

31 Dec - 27 Jan $ 616.00
CHI
Chicago
United Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
1 STOPS
CHI
Chicago
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27 Dec - 08 Jan $ 1,308.00
CHI
Chicago
LOT Polish Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
LOT Polish Airlines
1 STOPS
CHI
Chicago
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27 Dec - 08 Jan $ 1,454.00
CHI
Chicago
LOT Polish Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
LOT Polish Airlines
1 STOPS
CHI
Chicago
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Last minute flights from Chicago to Sofia

29 Dec - 31 Dec $ 1,304.00
CHI
Chicago
LOT Polish Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
LOT Polish Airlines
1 STOPS
CHI
Chicago
Pick dates
27 Dec - 31 Dec $ 1,308.00
CHI
Chicago
LOT Polish Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
LOT Polish Airlines
1 STOPS
CHI
Chicago
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27 Dec - 31 Dec $ 1,454.00
CHI
Chicago
LOT Polish Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
LOT Polish Airlines
1 STOPS
CHI
Chicago
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One-way flights to Sofia from Chicago

4:20 PM - 9:20 AM
Austrian Airlines
1 Stops
11h 30m
CHI - SOF
$ 465
Kiwi
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6:05 PM - 10:25 AM
United Airlines
2 Stops
35h 10m
CHI - SOF
$ 492
Kiwi
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6:00 PM - 10:25 AM
Lufthansa
1 Stops
11h 15m
CHI - SOF
$ 588
Kiwi
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How to find the cheapest flight from Chicago (CHI) to Sofia (SOF)

Related info for your journey
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How to find the cheapest flight from Chicago (CHI) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Chicago (CHI) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.