AirHint found the following cheapest return flights from Southend (SEN) to Ljubljana (LJU) in September 2026 (see full year).
Return flights
| 01 Sep - 08 Sep | easyJet | ||
| 28 Sep - 30 Sep | easyJet | ||
| 23 Sep - 30 Sep | easyJet | ||
| 25 Sep - 02 Oct | easyJet | ||
| 25 Sep - 28 Sep | easyJet |
Also check the deals for one-way flights from Southend to Ljubljana in September.
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