Cheapest return flights from Seattle to Bucharest in June from $659

AirHint found the following cheapest return flights from Seattle (SEA) to Bucharest (OTP) in June 2026 (see full year).

Return flights

02 Jun - 09 Jun Lufthansa
03 Jun - 10 Jun Lufthansa
09 Jun - 16 Jun Lufthansa
10 Jun - 17 Jun Lufthansa
01 Jun - 08 Jun Lufthansa
07 Jun - 14 Jun Lufthansa
08 Jun - 15 Jun SWISS
04 Jun - 11 Jun Lufthansa
05 Jun - 12 Jun Lufthansa
11 Jun - 18 Jun Lufthansa
30 Jun - 07 Jul KLM
24 Jun - 01 Jul Air France
29 Jun - 06 Jul KLM
27 Jun - 04 Jul SWISS
28 Jun - 05 Jul Lufthansa
25 Jun - 02 Jul Air France
26 Jun - 03 Jul Alaska Airlines

Also check the deals for one-way flights from Seattle to Bucharest in June.

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