Cheapest return flights from Washington to Sofia in August from $624

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

Return flights

26 Aug - 17 Sep Turkish Airlines
18 Aug - 25 Aug United
05 Aug - 19 Aug SWISS
08 Aug - 22 Aug Lufthansa
15 Aug - 22 Aug United
29 Aug - 08 Sep Turkish Airlines
27 Aug - 03 Sep United
21 Aug - 28 Aug United
12 Aug - 19 Aug United
24 Aug - 31 Aug United
30 Aug - 06 Sep United
06 Aug - 13 Aug United
04 Aug - 11 Aug United
10 Aug - 17 Aug United

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

Skyscanner

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.

Book a cheap hotel in Sofia

Cheap car rent in Sofia

Feel free to contact us with any feedback or request another flight research.