HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Peru

$429+ Cheap flights from St. Louis (STL) to Peru

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIM
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Peru with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Peru

Keep the following information in mind while searching for St. Louis to Peru flight deals. Data was last updated April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$669
(Delta)

One-way from

$429
(FlightHub)

Popular in

July

Cheapest in

September

Average price

$767
Provider with most accurate pricing for Lambert-St Louis-Lima J Chavez Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Lima J Chavez Intl flights.
Search Deals
From Lambert-St Louis to Peru
Search Deals
One-way flight from Lambert-St Louis to Peru
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from St. Louis to Peru

Cheapest flights from St. Louis to Peru
Explore the most affordable flight options available from St. Louis to Peru. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/269:00 amSTL - LIM
1 stop20h 00mDelta
Tue 9/912:15 pmLIM - STL
1 stop11h 24mDelta
Deal found 4/17$669
This American Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:29 amSTL - LIM
2 stops14h 51mAmerican Airlines
Thu 12/1112:50 amLIM - STL
1 stop15h 47mAmerican Airlines
Deal found 4/17$693
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:11 pmSTL - LIM
1 stop29h 49mUnited Airlines
Thu 10/912:40 amLIM - STL
1 stop18h 24mUnited Airlines
Deal found 4/17$704
This Avianca deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/109:40 amSTL - LIM
2 stops14h 55mMultiple Airlines
Mon 5/191:40 amLIM - STL
2 stops14h 09mMultiple Airlines
Deal found 4/17$727
This LATAM Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/126:00 amSTL - LIM
1 stop15h 10mLATAM Airlines
Sat 6/218:50 amLIM - STL
2 stops23h 13mLATAM Airlines
Deal found 4/17$833
This KAYAK deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/26:00 amSTL - CUZ
3 stops18h 45mLATAM Airlines
Thu 6/127:35 amCUZ - STL
2 stops16h 16mLATAM Airlines
Deal found 4/17$837
This Avianca deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/299:39 amSTL - LIM
2 stops14h 56mAvianca
Sat 5/36:45 pmLIM - STL
2 stops15h 13mAvianca
Deal found 4/17$851
This SmartFares deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/205:32 pmSTL - AQP
2 stops46h 53mLATAM Airlines
Thu 4/249:40 amAQP - STL
2 stops26h 05mLATAM Airlines
Deal found 4/17$1,297
This Mytrip deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/203:30 pmSTL - AQP
3 stops19h 30mMultiple Airlines
Thu 4/249:35 pmAQP - STL
3 stops41h 14mMultiple Airlines
Deal found 4/17$2,167

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Peru that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from St. Louis to Peru that are best for you.

Fly from

St. Louis

Fly to

Peru

Route

Depart

Return

Price

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 8/26

9:00 am-5:00 am

1 stop20h 00m

Lima J Chavez Intl

Tue 9/9

12:15 pm-11:39 pm

1 stop11h 24m

$669

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sat 9/27

5:11 pm-11:00 pm

1 stop29h 49m

Lima J Chavez Intl

Thu 10/9

12:40 am-7:04 pm

1 stop18h 24m

$704

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sat 5/10

9:40 am-12:35 am

2 stops14h 55m

Lima J Chavez Intl

Mon 5/19

1:40 am-3:49 pm

2 stops14h 09m

$727

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 8/26

5:32 am-10:21 pm

1 stop16h 49m

Lima J Chavez Intl

Mon 9/15

6:55 am-11:01 pm

1 stop16h 06m

$740

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Thu 6/12

6:00 am-9:10 pm

1 stop15h 10m

Lima J Chavez Intl

Sat 6/21

8:50 am-8:03 am

2 stops23h 13m

$833

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Mon 6/2

6:00 am-12:45 am

3 stops18h 45m

Cusco Velazco Astete

Thu 6/12

7:35 am-11:51 pm

2 stops16h 16m

$837

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 4/29

9:39 am-12:35 am

2 stops14h 56m

Lima J Chavez Intl

Sat 5/3

6:45 pm-9:58 am

2 stops15h 13m

$851

St. LouisArequipa

STL - AQP

STLAQP

Lambert-St Louis

Sun 4/20

5:32 pm-4:25 pm

2 stops46h 53m

Arequipa Rodriguez Ballon

Thu 4/24

9:40 am-11:45 am

2 stops26h 05m

$1,297

St. LouisArequipa

STL - AQP

STLAQP

Lambert-St Louis

Sun 4/20

3:30 pm-11:00 am

3 stops19h 30m

Arequipa Rodriguez Ballon

Thu 4/24

9:35 pm-2:49 pm

3 stops41h 14m

$2,167

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sat 5/31

7:05 am-8:55 pm

2 stops13h 50m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Best time to book a flight from St. Louis to Peru

Have a flexible travel schedule? Discover the best time to fly to Peru from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from St. Louis to Peru?

Currently, April is the cheapest month in which you can book a flight from St. Louis to Peru (average of $499). Flying from St. Louis to Peru in December is currently the most expensive (average of $802). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to PE?

Find hourly flight availability from St. Louis to Peru. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

When flying from St. Louis to Peru, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Peru by month

Plan your trip to Peru by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Peru ranges from 0.0 - 0.0 inches per month. January is typically the wettest month, when rainfall can reach 0.0 in. January is typically the driest time to visit Peru when rainfall is around 0.0 in.

Temperature in Peru by month

Plan your trip to Peru by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Peru, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 62.6 F).

Reviews of airlines servicing Peru

Get insights into the airlines that provide service to Peru. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Peru. Reviews last updated April 17, 2025.
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
LATAM Airlines
7.5
Good
1,761 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Avianca
6.7
Okay
2,316 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Peru. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Peru?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Peru. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

  • What are the most popular routes from St. Louis to Peru?

    The most popular route from St. Louis to Peru is Lambert-St Louis - Lima J Chavez Intl. You may also consider Lambert-St Louis - Cusco Velazco Astete or Lambert-St Louis - Arequipa Rodriguez Ballon.

  • Can I find deals for flights from St. Louis to Peru that include hotel bookings?

    Yes. In addition to deals on St. Louis to Peru flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Peru?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Peru.

  • Can I find deals for business class flights from St. Louis to Peru?

    Yes. Cheapflights offers flight deals from St. Louis to Peru by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Peru?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Peru (average of $499). Flying from St. Louis to Peru in December is currently the most expensive (average of $802). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Peru

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Lima flights
Kansas City to Bogotá flights
Kansas City to Jose Maria Cordova Intl flights
Kansas City to Quito flights
Kansas City to Lima flights
St. Louis to Jose Maria Cordova Intl flights
St. Louis to Bogotá flights
Kansas City to San Andrés flights
Kansas City to Guayaquil flights
Kansas City to Guarulhos Intl flights
Kansas City to Ministro Pistarini flights
St. Louis to Jorge Newbery flights
St. Louis to Ministro Pistarini flights
St. Louis to Cartagena flights
St. Louis to Rio de Janeiro–Galeão Intl flights
St. Louis to Guarulhos Intl flights
Kansas City to Rio de Janeiro–Galeão Intl flights
Kansas City to Cartagena flights
Kansas City to Cali flights
Kansas City to Montevideo flights
St. Louis to Cuzco flights
Springfield to Jose Maria Cordova Intl flights
Kansas City to Barranquilla flights
Kansas City to Jorge Newbery flights
St. Louis to Quito flights
St. Louis to Guayaquil flights
Kansas City to Santiago flights
Kansas City to Recife flights
St. Louis to Santiago flights
Kansas City to Asuncion flights
St. Louis to Santos Dumont flights
St. Louis to Santa Cruz de la Sierra flights
Kansas City to Florianopolis flights
St. Louis to Porto Alegre flights
Kansas City to Santa Marta flights
Kansas City to Santos Dumont flights
St. Louis to Easter Island flights
St. Louis to La Paz flights
Kansas City to Caracas flights
St. Louis to Bucaramanga flights
Kansas City to Santa Cruz de la Sierra flights
Kansas City to Brasilia flights
St. Louis to San Cristobal flights
Kansas City to Balmaceda flights

Top 4 airlines flying from St. Louis to Peru

Discover the top 4 airlines that operate flights from St. Louis to Peru. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$633Average$870FlexibilityNo cancel feeOn-time69%
DeltaCheapest$633Average$816FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$637Average$952FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$671Average$877FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.