Cheapest return flights from Washington to Sofia in October from 548€

AirHint found the following cheapest return flights from Washington (IAD) to Sofia (SOF) in October 2025 (see full year).

Return flights

07 Oct - 21 Oct Scandinavian Airlines
30 Oct - 06 Nov United
09 Oct - 16 Oct Turkish Airlines
15 Oct - 22 Oct United
25 Oct - 01 Nov United
16 Oct - 19 Oct TAP
10 Oct - 17 Oct United
20 Oct - 27 Oct United
04 Oct - 18 Oct Turkish Airlines
02 Oct - 09 Oct United
05 Oct - 12 Oct United

Also check the deals for one-way flights from Washington to Sofia in October.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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