Cheapest return flights from Washington to Lima in September from $379

AirHint found the following cheapest return flights from Washington (IAD) to Lima (LIM) in September 2025 (see full year).

Return flights

26 Sep - 04 Oct Avianca
25 Sep - 02 Oct Avianca
26 Sep - 11 Oct Avianca
30 Sep - 05 Oct Avianca
24 Sep - 01 Oct Avianca
26 Sep - 29 Sep Avianca
26 Sep - 03 Oct Avianca
28 Sep - 28 Sep Delta
20 Sep - 26 Sep Avianca

Also check the deals for one-way flights from Washington to Lima in September.

Skyscanner

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.

Book a cheap hotel in Lima

Cheap car rent in Lima

Feel free to contact us with any feedback or request another flight research.