$270 Find Cheap Flights from St. Louis to Peru - Compare and Save

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Cheap Flights from St. Louis to Peru

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Lima
Lima1 stop$802
Cusco
Cusco2 stops$1,144
Arequipa
Arequipa2 stops$1,225
Lima
Lima1 stop$802
Cusco
Cusco2 stops$1,144
Arequipa
Arequipa2 stops$1,225
Booking Insights

Price, demand and travel trends for St. Louis to Peru flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from St. Louis to Peru cheaper or more expensive than last year?

Fares from St. Louis to Peru are running about 15% higher than they were around this time last year, averaging $988 round-trip.

What are the cheapest fares from St. Louis to Peru right now?

Here are the cheapest round-trip fares from St. Louis to Peru on KAYAK in the last week:

• Lima J Chavez Intl (LIM) from $802
• Cusco Velazco Astete (CUZ) from $1,150
• Tarapoto (TPP) from $1,210

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

February is the cheapest time of year to fly, with average fares of $668. Prices are highest in November, when average flight costs increase to around $1,158.

When is the best time to book flights from St. Louis to Peru?

Book your flights 17 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 32% compared to booking last-minute (within 2 weeks of departure).

Which airport in Peru is the cheapest to fly to from St. Louis?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Peru are:

• Lima J Chavez Intl (LIM) (avg. price $958)
• Cusco Velazco Astete (CUZ) (avg. price $1,204)
• Tarapoto (TPP) (avg. price $1,986)

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

Monday tends to be the cheapest day to fly from St. Louis to Peru, while Sunday is the most expensive. Fares run about 31% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from St. Louis to Peru?

Data from the past 12 months shows it's cheapest to fly to Peru during the afternoon with average prices of $859. The evening is the most expensive time to fly, with average prices of $1,054.

Key details for St. Louis to Peru flights

Low season

March

Cheapest flight

$270
Beat the crowds with an average 56% drop in travelers.
The most popular month to fly with an average 52% increase in travelers.
One-way flight from St. Louis to Lima

Your St. Louis to Peru flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from St. Louis to Peru?

    Yes. Fares from St. Louis to Peru are low right now. As a rule of thumb, a round-trip under $829 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from St. Louis to Peru?

    Over the past 12 months, round-trip fares from St. Louis to Peru have ranged from $829 to $1,200.

  • What are the main airports serving Peru?

    Peru has 30 airports. The three busiest are Lima J Chavez Intl (LIM) (93% of arrivals), Cusco Velazco Astete (CUZ) (5%) and Tarapoto (TPP) (2%).

  • What airlines fly nonstop from St. Louis to Peru?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from St. Louis to Peru. One-stop options include:

    • Delta
    • United Airlines
    • American Airlines

  • Which cabin classes are available on flights from St. Louis to Peru?

    On flights from St. Louis to Peru you can book Economy Class, Business Class or First Class.

  • What are some popular landmarks in Peru?

    KAYAK travelers' favorite landmarks in Peru include:

    • Plaza de Armas
    • Estadio Universidad San Marcos
    • San Marcos Cultural Center
    • National Stadium

Your guide to booking St. Louis to Peru flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 17 weeks before your trip. KAYAK data shows fares in this window are around 32% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid November when prices are at their highest.
  • Flying on Monday is usually the cheapest. Flights on Sunday cost about 31% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Lima J Chavez Intl (LIM) is the cheapest airport to fly into from St. Louis. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Lima, which is the most popular destination in Peru. From there, it's easy to continue on to other popular destinations such as Cusco, Punta Sal and Paracas.

Reviews of the top 3 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.
7.8
DeltaOverall score based on 8694 reviews
7.2Food
8.1Boarding
7.8Comfort
7.8Entertainment
8.5Crew
Airline reviews

The flight was delayed and passengers were told that they will miss connections as flight may get 40-55 min late.

2.0 MediocreAbhay, Oct 2026
Read more Delta reviews

The flight was delayed and passengers were told that they will miss connections as flight may get 40-55 min late.

The flight was delayed and knowing I was going to miss my connection, nothing was done proactively to try and get me rebooked. It was an act of congress to do so. This is not on the crew, but on the experience itself

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

Flight was delayed multiple time and for more than 1 hr. My onward flight from BOS to MCI was also delayed. These delays have caused me so much inconvenience and Delta does nothing to ensure flights take off on time. No one knew why the inbound flight was delayed and what was the issue.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

Putting someone with a window seat in the last boarding group? Indiocy typical of Latam.

4 hour delay. So our flight schedule mass up. Your worker told me you should rebooking myself. I was very angry. Latam Airline always get the money more through any way. But They have no concern passenger.

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

I was in the last row and they sent me to check in my luggage last minute after boarding. I had to go through the crowd.

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

Only complaint is that the entertainment system wasn’t working on our seats and some others.

Routine and on time flight with pleasant stewards and decent food. Nice experience!

You delayed my trip three days for no reason other than your lack of preparedness, did not offer any compensation, including food or a bed. I couldn’t trust you so I moved up my return flight and lost another day at the end of my trip to hopefully make sure I make my next flight. I will never fly LATAM again. You have the worse accountability and reliability and clearly do not care that your clients have lives and what it cost to fly to another country.

No air in the middle rows. Had a hard time breathing. Was dying of heat.

It was a good experience, the flight was a little too long & the food was ok

Staff in first class seemed to struggle to provide service to both sections. I didn’t get breakfast though I requested it. I only got coffee after asking the opposite side flight attendant and then could never see them to request a bottle of water.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Overall boarding and debarking is a joke. I dont even bring luggage anymore on trips because you can never allow them to be place then in the overhead bin or you have to pay or you check them which is even worse having to wait for your luggage on the tarmac.

More options for your flight from St. Louis to Peru

Complete your trip to Peru with a hotel stay or car rental