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

Return flights

07 Oct - 14 Oct	Icelandair
14 Oct - 21 Oct	Air Canada
28 Oct - 04 Nov	SWISS
29 Oct - 05 Nov	Lufthansa
22 Oct - 29 Oct	Air Canada
27 Oct - 03 Nov	Air Canada
27 Oct - 06 Nov	Lufthansa
15 Oct - 22 Oct	Air Canada
21 Oct - 28 Oct	Austrian Airlines
26 Oct - 02 Nov	Lufthansa
23 Oct - 30 Oct	Air Canada
24 Oct - 31 Oct	Icelandair
25 Oct - 01 Nov	Lufthansa
31 Oct - 07 Nov	Lufthansa
30 Oct - 06 Nov	Austrian Airlines
19 Oct - 26 Oct	Icelandair
06 Oct - 13 Oct	Air Canada
08 Oct - 15 Oct	Turkish Airlines
07 Oct - 01 Nov	Lufthansa
24 Oct - 15 Nov	TAP

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

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 Bucharest

Cheap car rent in Bucharest

Cheapest return flights from Washington to Bucharest in October from 418€

Return flights