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BIL (Billings) to SOF (Sofia) Flights $1,179.3

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Cheap BIL to SOF Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Billings to Sofia (BIL to SOF)

Question : Do travelers from Billings typically stay in Sofia for very long?
Answer : Passengers from BIL to SOF stay 21 days on average.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : The best day to fly on a budget this month is Thursday. Flexibility is paramount when booking travel plans in order to keep travel costs down.