$909 Find Cheap Flights from Peru to St. Louis - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 9/18. 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 Peru to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Peru to St. Louis 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 Peru to St. Louis

Fri, Sep 18 - Sat, Sep 26
Copa Airlines Logo
2:35 am - 8:00 pm
LIM
-
STL
17h 25m
2 stops
Copa Airlines Logo
8:00 am - 3:40 pm
STL
-
LIM
31h 40m
2 stops
$881Copa Airlines
Wed, Sep 9 - Wed, Sep 16
American Airlines Logo
6:30 am - 9:49 pm
LIM
-
STL
15h 19m
1 stop
American Airlines Logo
5:00 am - 10:25 pm
STL
-
LIM
17h 25m
1 stop
$909American Airlines
Wed, Sep 9 - Wed, Sep 16
American Airlines Logo
11:45 pm - 1:03 pm
LIM
-
STL
13h 18m
2 stops
American Airlines Logo
6:30 am - 8:30 pm
STL
-
LIM
14h 00m
2 stops
$914American Airlines
Wed, Sep 9 - Wed, Sep 16
American Airlines Logo
6:30 am - 9:49 pm
LIM
-
STL
15h 19m
1 stop
American Airlines Logo
6:53 am - 8:30 pm
STL
-
LIM
13h 37m
2 stops
$914American Airlines
Sat, Sep 12 - Sat, Sep 19
Multiple Airlines Logo
6:04 am - 4:34 pm
LIM
-
STL
58h 30m
2 stops
Multiple Airlines Logo
5:46 pm - 5:00 am
STL
-
LIM
11h 14m
1 stop
$927Multiple Airlines
Sat, Sep 19 - Sat, Sep 26
LATAM Airlines Logo
12:05 pm - 9:00 am
LIM
-
STL
20h 55m
1 stop
LATAM Airlines Logo
6:00 am - 9:55 pm
STL
-
LIM
15h 55m
1 stop
$932LATAM Airlines
Sat, Sep 19 - Sat, Sep 26
LATAM Airlines Logo
12:05 pm - 9:00 am
LIM
-
STL
20h 55m
1 stop
LATAM Airlines Logo
6:00 am - 8:20 pm
STL
-
LIM
14h 20m
2 stops
$932LATAM Airlines
Sat, Sep 19 - Sat, Sep 26
Delta Logo
1:30 pm - 10:55 am
LIM
-
STL
21h 25m
2 stops
Delta Logo
6:00 am - 8:20 pm
STL
-
LIM
14h 20m
2 stops
$943Delta
Wed, Sep 2 - Thu, Sep 10
Delta Logo
12:05 am - 11:46 am
LIM
-
STL
11h 41m
1 stop
Delta Logo
1:40 pm - 5:00 am
STL
-
LIM
15h 20m
2 stops
$943Delta
Sat, Sep 19 - Sat, Sep 26
Delta Logo
12:05 pm - 9:00 am
LIM
-
STL
20h 55m
1 stop
Delta Logo
1:40 pm - 5:00 am
STL
-
LIM
15h 20m
1 stop
$943Delta
Booking Insights

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

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

What are the most popular airlines flying to St. Louis?

The most popular airline among KAYAK users flying to St. Louis is Delta, followed by American Airlines.

Good to know

Low season

September

Cheapest flight

$909
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Lima to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    The city center of St. Louis is 13 miles from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    St. Louis is served by Lambert-St Louis Airport, also commonly referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl. The airport code is STL.

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

    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 to St. Louis.

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

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

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

    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 to St. Louis 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 to St. Louis?

    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 to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 2,889 direct flights from within Peru to St. Louis. The most common day for departures is Friday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top airlines flying from Peru to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Peru to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8487 reviews
7.2Food
7.8Entertainment
8.5Crew
8.1Boarding
7.8Comfort
Airline reviews

I lost my plane and spend 5 hours at the airport arriving at Buffalo at 1 am taxis are very expensive at that time.

2.0 MediocreJassely, Mar 2026
LIM - MIA
Read more Delta reviews

I lost my plane and spend 5 hours at the airport arriving at Buffalo at 1 am taxis are very expensive at that time.

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

On 2 different flights the wifi was horrible and there was no drink or snack service.

Excellent flight from boarding to landing. Plane crew was informative, warm & attentive.

There was no FREE wi-fi nor entertainment screens at all.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

As we lined up to board they gave our plane to a flight going to Newark. So then we got delayed until they could find another plane. Flight crew was ok. I’m assuming since it’s a shorter flight they only offered water and coffee.

I am surprised that a company of such prestige would let you board a plane without air conditioning and no WiFi, not to mention that we had a delay of just over fifteen minutes and many passengers arrived...It was a flight beyond Delta's prestige.

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Improvements in communication and empathy are absolutely necessary for American Airlines staff (top down). It’s like they are numb to the needs of their customers.

I like the speed of boarding and deplaning and the fact that everything was on time. The crew (attendants) were probably quite new and did not begin the in cabin service until 30 min before landing even though there was little to no air turbulence for the last 1.5 hours of the flight. It made for a mad scramble at the end to get trash collected and carts stowed before touch down.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

I did like the employee's, they are very friendly and all smiled most of the time, Overall, from checking in bags to getting on plane, not enough employees to be able to get all on the plane, therefore I was not able to get on the plane, due to no one wea there for me to check in my bag, so I decided to go thru the security point and by the time they were done with my bags, I was told that my bag cannot be checked in, and then found out that the lady that does the check in was boarding the customers onto the plane, she said that she was going back and fourth, there for was not able to get on the plane, which changed all my flights by the time I got to Dallas, I was on standby 3 times, and wasn't sure about being able to get on the fourth plane, so ended up buying another plane ticket, so I could make my destination on time.

Not sure about entertainment as I didn't use any, so maybe there should be an NA option on this survey. Otherwise everything was just as it should be. Of course I wish planes were more comfortable and had seats that would tilt back further.

American Airlines “Randy” questioned why I needed preboarding and denied my request for same. Then Randy attempted to berate me when I boarded with my group. I was seated in an exit roll with a young man with a disability that exhibited difficulty controlling and settling himself. But Tandy questioned my disability. The flight was horrible. It was overpacked.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

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

Information on the airport you'll fly into in St. Louis