To save on the cost of your flight from St Louis to Peru, book at least 51 days before your planned departure. Booking around this time can save you about 17% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $615 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $641.
August can be a great time to fly to Peru from St Louis with a flight ticket averaging about $539. Cheapflights users have found deals in the month of August for as cheap as $218. The most expensive prices can be found in the month of December.
The chart below displays the airlines Cheapflights users traveling from St Louis to Peru choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
||$864||$1,010||No cancel fee||67%|
||$883||$1,080||No cancel fee||81%|
||$890||$1,082||No cancel fee||N/A|
||$916||$1,156||No cancel fee||69%|
||$938||$1,208||No cancel fee||71%|