$338 Find Cheap Flights from St. Louis to Peru

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 7/13. 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

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Best Peru Flight Deals from St. Louis

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lima
Lima1 stop$645
Cusco
Cusco2 stops$763
Lima
Lima1 stop$645
Cusco
Cusco2 stops$763

Cheap Flights from St. Louis to Peru

 
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, Sep 29 - Wed, Oct 8
United Airlines Logo
6:15 am - 11:00 pmSTL-LIM
16h 45m1 stop
United Airlines Logo
12:40 am - 6:57 pmLIM-STL
18h 17m1 stop
$645United Airlines
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Fri, Aug 22 - Tue, Sep 16
 Logo
8:44 am - 8:43 pmSTL-LIM
35h 59m2 stops
 Logo
3:00 am - 6:32 pmLIM-STL
39h 32m2 stops
Tue, Dec 2 - Thu, Dec 11
 Logo
10:30 am - 1:50 amSTL-LIM
14h 20m2 stops
 Logo
2:55 am - 3:21 pmLIM-STL
13h 26m2 stops
Mon, Sep 29 - Wed, Oct 8
Delta Logo
6:00 am - 9:45 pmSTL-LIM
15h 45m2 stops
Delta Logo
12:05 am - 6:02 pmLIM-STL
17h 57m2 stops
$669Delta
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Sun, Sep 28 - Tue, Oct 7
Delta Logo
11:51 am - 6:25 amSTL-LIM
18h 34m2 stops
Delta Logo
12:05 am - 6:02 pmLIM-STL
17h 57m2 stops
$673Delta
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Sat, Sep 27 - Fri, Oct 10
LATAM Airlines Logo
3:30 pm - 6:25 amSTL-LIM
14h 55m2 stops
LATAM Airlines Logo
8:50 am - 11:39 pmLIM-STL
14h 49m2 stops
$708LATAM Airlines
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Tue, Aug 26 - Tue, Sep 9
American Airlines Logo
6:00 am - 8:30 pmSTL-LIM
14h 30m2 stops
American Airlines Logo
10:00 pm - 12:51 pmLIM-STL
14h 51m2 stops
$710American Airlines
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Sat, Sep 27 - Fri, Oct 10
American Airlines Logo
5:28 am - 10:25 pmSTL-LIM
16h 57m1 stop
American Airlines Logo
10:00 pm - 12:12 pmLIM-STL
14h 12m2 stops
$713American Airlines
Find Deal
Tue, Aug 26 - Mon, Sep 15
LATAM Airlines Logo
6:00 am - 9:10 pmSTL-LIM
15h 10m1 stop
LATAM Airlines Logo
12:00 pm - 11:39 pmLIM-STL
11h 39m1 stop
$728LATAM Airlines
Find Deal
Mon, Aug 4 - Tue, Aug 19
Copa Airlines Logo
8:00 am - 12:25 pmSTL-LIM
52h 25m2 stops
Copa Airlines Logo
2:35 am - 7:27 pmLIM-STL
40h 52m2 stops
$741Copa Airlines
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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 September, when tickets cost $700 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $859 and $854 respectively.

What’s the cheapest day of the week to fly from St. Louis to Peru?

The average price of all round-trip flights from St. Louis to Peru clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Peru on a Wednesday and more expensive on a Friday. On your return trip to St. Louis, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.


Good to know

Low seasonSeptember
High seasonJune
Cheapest flight$338
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 4% 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.

  • What is the cheapest time of day to fly to Peru?

    The cheapest time of day to fly to Peru is generally in the morning, when round-trip flights cost $785 on average. Morning departures are around 2% cheaper than evening flights, on average. The most expensive time of day to fly to Peru is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $831.

Top 4 airlines serving from St. Louis to Peru

 
Need help choosing which airline to fly with from St. Louis to Peru? 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.
8.0
DeltaOverall score based on 7946 reviews
7.3Food
8.2Boarding
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

10.0 ExcellentHartaj, Jun 2025EWR - RDU
Read more Delta reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Great flight! Only complaint I had was that I didn’t get breakfast that morning because I don’t eat eggs for breakfast.. I ate an energy bar I bought in the airport which I had never done before. Otherwise, another great Delta flight!

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

Our flight was cancelled and it took them 5 hours to reschedule and the next morning they said we still didn’t have a new ticket.

We didn’t have any entertainment. I tried to go online without success. The airplane was extremely cold and they didn’t have blankets.

It was good, however the airplane was really cold. We received snacks and the crew was friendly.

Delta has an outstanding service. They are courteous and punctual most of the time. The flight departed a half hour late but we arrived 15 minutes early.

Change of gate in Santiago devolved into half plus hour delay and a really tight connection in Lima

Although the flight is goof and the crew is good, the way the airline charges you for every service is ridiculous.

I liked everything, this was classed as premium economy but it was much better than Lufthansas business class. Lovely staff, comfortable plane and an excellent seat arrangement. A very pleasant surprise.

No entertainment but not expected. Unless you are referring to monitor that you can use. Then Al, was fine on all flights.

Friendly staff, It was the first flight out for our plane, so had to be deiced from the frost. Only delayed a few minutes,

Staff encountered friendly and helpful. Flight delayed 1 hour due to mechanical issue, but made it through Atlanta immkgration and security in plenty of time,

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

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