Cheapest return flights from Seattle to Ljubljana in May from $543

AirHint found the following cheapest return flights from Seattle (SEA) to Ljubljana (LJU) in May 2026 (see full year).

Return flights

04 May - 11 May Air France
05 May - 12 May Delta
06 May - 13 May Delta
03 May - 10 May KLM
01 May - 08 May Lufthansa
02 May - 09 May Air France
11 May - 18 May Air France
07 May - 14 May Delta
10 May - 17 May Delta
09 May - 16 May Air France

Also check the deals for one-way flights from Seattle to Ljubljana in May.

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