$238 Find Cheap Flights from St. Louis to Peru - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Peru departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from St. Louis to Peru

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lima
Lima1 stop$681
Cusco
Cusco2 stops$1,137
Arequipa
Arequipa2 stops$935
Lima
Lima1 stop$681
Cusco
Cusco2 stops$1,137
Arequipa
Arequipa2 stops$935

Book Cheap St. Louis to Peru Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Peru that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Peru

Mon, Nov 9 - Sun, Nov 22
Multiple Airlines Logo
4:05 pm - 4:30 pm
STL
-
LIM
23h 25m
2 stops
Multiple Airlines Logo
8:00 am - 3:26 pm
LIM
-
STL
32h 26m
1 stop
$687Multiple Airlines
Sat, Dec 5 - Wed, Dec 9
Air Canada Logo
4:05 pm - 6:10 am
STL
-
LIM
13h 05m
1 stop
Air Canada Logo
8:00 am - 3:26 pm
LIM
-
STL
32h 26m
1 stop
$687Air Canada
Mon, Nov 9 - Sun, Nov 22
Multiple Airlines Logo
4:05 pm - 4:30 pm
STL
-
LIM
23h 25m
2 stops
Multiple Airlines Logo
5:35 pm - 3:26 pm
LIM
-
STL
46h 51m
2 stops
$687Multiple Airlines
Wed, Nov 4 - Sun, Nov 15
LATAM Airlines Logo
12:00 pm - 5:00 am
STL
-
LIM
16h 00m
2 stops
LATAM Airlines Logo
12:00 pm - 11:56 pm
LIM
-
STL
12h 56m
1 stop
$708LATAM Airlines
Wed, Nov 4 - Sun, Nov 15
LATAM Airlines Logo
4:00 pm - 5:00 am
STL
-
LIM
12h 00m
2 stops
LATAM Airlines Logo
8:20 am - 11:56 pm
LIM
-
STL
16h 36m
2 stops
$708LATAM Airlines
Mon, Nov 9 - Sun, Nov 22
LATAM Airlines Logo
12:20 pm - 5:00 am
STL
-
LIM
15h 40m
1 stop
LATAM Airlines Logo
12:00 pm - 9:33 pm
LIM
-
STL
10h 33m
1 stop
$723LATAM Airlines
Tue, Sep 8 - Tue, Sep 15
Delta Logo
10:40 am - 5:00 am
STL
-
LIM
18h 20m
1 stop
Delta Logo
12:05 pm - 11:42 pm
LIM
-
STL
11h 37m
1 stop
$765Delta
Tue, Sep 8 - Wed, Sep 16
Delta Logo
3:40 pm - 5:00 am
STL
-
LIM
13h 20m
1 stop
Delta Logo
12:05 am - 10:55 am
LIM
-
STL
10h 50m
1 stop
$765Delta
Mon, Nov 9 - Sun, Nov 22
American Airlines Logo
5:00 am - 11:26 pm
STL
-
LIM
17h 26m
1 stop
American Airlines Logo
10:55 pm - 5:25 pm
LIM
-
STL
19h 30m
1 stop
$765American Airlines
Wed, Nov 4 - Sun, Nov 15
American Airlines Logo
5:00 am - 11:26 pm
STL
-
LIM
17h 26m
1 stop
American Airlines Logo
10:55 pm - 10:08 am
LIM
-
STL
12h 13m
1 stop
$765American Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Peru flights

Get data-powered insights and trends into flights from St. Louis to Peru to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Peru?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Peru, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Peru is February, when tickets cost $664 (return) on average. On the other hand, the most expensive months are November and August, when the average cost of round-trip tickets is $1,158 and $1,109 respectively.

How far in advance should I book a flight from St. Louis to Peru?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Peru, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Peru, you should book around 3 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Find deals

Good to know

Low season

February

Cheapest flight

$238
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from St. Louis to Lima

FAQs - booking Peru flights

  • How does KAYAK find such low prices on flights from St. Louis to Peru?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Peru.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Peru?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Peru is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Peru?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Peru with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Peru?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Peru up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from St. Louis to Peru

Information on your arrival and departure airports

St. Louis (STL)