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

Return flights

12 Sep - 25 Sep	Avianca
27 Sep - 18 Oct	Avianca
01 Sep - 30 Sep	Avianca
30 Sep - 12 Oct	Avianca
07 Sep - 14 Sep	Avianca
01 Sep - 15 Sep	Avianca
01 Sep - 10 Sep	Avianca
01 Sep - 12 Sep	Avianca
01 Sep - 07 Sep	Avianca
05 Sep - 07 Oct	Avianca
07 Sep - 22 Sep	Avianca
12 Sep - 29 Sep	Avianca
14 Sep - 19 Sep	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 $1102

Return flights