Cheapest return PHX–OTP flights, September

AirHint found the following cheapest return flights from Phoenix (PHX) to Bucharest (OTP) in September 2026 (see full year).

Return flights

14 Sep - 21 Sep KLM
01 Sep - 08 Sep KLM
09 Sep - 16 Sep KLM
02 Sep - 09 Sep Delta
16 Sep - 23 Sep KLM
11 Sep - 18 Sep Air France
10 Sep - 17 Sep Air France
04 Sep - 11 Sep KLM
12 Sep - 19 Sep Lufthansa
13 Sep - 20 Sep Delta

Also check the deals for one-way flights from Phoenix to Bucharest in September.

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