AirHint found the following cheapest return flights from Madrid (MAD) to La Paz (LPB) in September 2025 (see full year).

Return flights

28 Sep - 13 Oct	Avianca
27 Sep - 13 Oct	Avianca
24 Sep - 21 Oct	Avianca
21 Sep - 28 Sep	Boliviana de Aviacion
23 Sep - 29 Sep	Avianca
19 Sep - 04 Oct	Boliviana de Aviacion
30 Sep - 23 Oct	Avianca
19 Sep - 22 Sep	Boliviana de Aviacion
19 Sep - 30 Sep	Boliviana de Aviacion
30 Sep - 08 Oct	Iberojet
20 Sep - 21 Sep	Avianca
24 Sep - 03 Oct	Avianca
20 Sep - 27 Sep	Air Europa
30 Sep - 10 Oct	WORLD2FLY
20 Sep - 25 Sep	Avianca
17 Sep - 25 Sep	Boliviana de Aviacion
30 Sep - 12 Oct	Avianca

Also check the deals for one-way flights from Madrid to La Paz in September.

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.

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Cheapest return flights from Madrid to La Paz in September from $981

Return flights