HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Peru

$338+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$645
(United Airlines)

One-way from

$338
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$837
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. 4% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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.
Mon 9/296:15 amSTL - LIM
1 stop16h 45mUnited Airlines
Wed 10/812:40 amLIM - STL
1 stop18h 17mUnited Airlines
Deal found 6/10$645
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Fri 8/228:44 amSTL - LIM
2 stops35h 59mMultiple Airlines
Tue 9/163:00 amLIM - STL
2 stops39h 32mMultiple Airlines
Deal found 6/10$653
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 9/296:00 amSTL - LIM
2 stops15h 45mDelta
Wed 10/811:20 pmLIM - STL
1 stop13h 05mDelta
Deal found 6/10$669
This LATAM Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 12/316:00 amSTL - LIM
2 stops13h 55mLATAM Airlines
Wed 1/1412:00 pmLIM - STL
2 stops21h 14mLATAM Airlines
Deal found 6/10$672
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/269:23 amSTL - LIM
2 stops13h 02mAmerican Airlines
Tue 9/910:00 pmLIM - STL
2 stops17h 09mAmerican Airlines
Deal found 6/11$710
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/48:00 amSTL - LIM
2 stops52h 25mCopa Airlines
Tue 8/192:35 amLIM - STL
2 stops40h 52mCopa Airlines
Deal found 6/11$741
This LATAM Airlines deal was found by Cheapflights users on 6/9. 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.
Mon 9/223:30 pmSTL - CUZ
2 stops21h 20mLATAM Airlines
Mon 9/295:55 pmCUZ - STL
2 stops16h 45mLATAM Airlines
Deal found 6/9$763
This Mytrip deal was found by Cheapflights users on 6/9. 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.
Sat 10/187:37 pmSTL - CUZ
3 stops35h 47mMultiple Airlines
Sat 10/2511:30 amCUZ - STL
3 stops31h 02mMultiple Airlines
Deal found 6/9$878
This Delta deal was found by Cheapflights users on 6/11. 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.
Sun 10/266:00 amSTL - CUZ
2 stops18h 45mDelta
Fri 10/318:00 pmCUZ - STL
2 stops16h 25mDelta
Deal found 6/11$981
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 9/205:28 amSTL - CUZ
2 stops24h 56mAmerican Airlines
Sat 9/2710:02 pmCUZ - STL
2 stops25h 57mAmerican Airlines
Deal found 6/11$987

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 June 12, 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

Mon 9/29

6:15 am-11:00 pm

1 stop16h 45m

Lima J Chavez Intl

Wed 10/8

12:40 am-6:57 pm

1 stop18h 17m

$645

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Fri 8/22

8:44 am-8:43 pm

2 stops35h 59m

Lima J Chavez Intl

Tue 9/16

3:00 am-6:32 pm

2 stops39h 32m

$653

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 9/29

6:00 am-9:45 pm

2 stops15h 45m

Lima J Chavez Intl

Wed 10/8

11:20 pm-12:25 pm

1 stop13h 05m

$669

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 8/26

9:23 am-10:25 pm

2 stops13h 02m

Lima J Chavez Intl

Tue 9/9

10:00 pm-3:09 pm

2 stops17h 09m

$710

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 8/26

10:25 am-9:10 pm

1 stop10h 45m

Lima J Chavez Intl

Mon 9/15

12:00 pm-8:10 am

1 stop20h 10m

$728

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 8/4

8:00 am-12:25 pm

2 stops52h 25m

Lima J Chavez Intl

Tue 8/19

2:35 am-7:27 pm

2 stops40h 52m

$741

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Mon 9/22

3:30 pm-12:50 pm

2 stops21h 20m

Cusco Velazco Astete

Mon 9/29

5:55 pm-10:40 am

2 stops16h 45m

$763

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Sat 10/18

7:37 pm-7:24 am

3 stops35h 47m

Cusco Velazco Astete

Sat 10/25

11:30 am-6:32 pm

3 stops31h 02m

$878

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Sun 10/26

6:00 am-12:45 am

2 stops18h 45m

Cusco Velazco Astete

Fri 10/31

8:00 pm-12:25 pm

2 stops16h 25m

$981

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Sat 9/20

5:28 am-6:24 am

2 stops24h 56m

Cusco Velazco Astete

Sat 9/27

10:02 pm-11:59 pm

2 stops25h 57m

$987

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 15 results
1
2

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 June 12, 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 June 12, 2025.
Read through reviews of airlines operating flights from St. Louis to Peru, such as Delta, LATAM Airlines and Copa Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
LATAM Airlines
7.5
Good
1,785 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Copa Airlines
7.5
Good
1,451 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 cheapest airlines to fly from St. Louis to Peru one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $429. Users have also found prices from $446 and $1,293 on United Airlines and LATAM Airlines, respectively.

  • 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 Jose Maria Cordova Intl flights
Kansas City to Bogotá flights
Kansas City to Lima flights
Kansas City to San Andrés flights
Kansas City to Guarulhos Intl flights
Kansas City to Quito flights
Kansas City to Ministro Pistarini flights
St. Louis to Ministro Pistarini flights
St. Louis to Rio de Janeiro–Galeão Intl flights
St. Louis to Cuzco flights
St. Louis to Guarulhos Intl flights
Kansas City to Cartagena flights
St. Louis to Jorge Newbery flights
Kansas City to Montevideo flights
St. Louis to Santiago flights
St. Louis to Quito flights
Kansas City to Rio de Janeiro–Galeão Intl flights
Kansas City to Santiago flights
St. Louis to Santos Dumont flights
St. Louis to Jose Maria Cordova Intl flights
Kansas City to Santos Dumont flights
Kansas City to Jorge Newbery flights
St. Louis to Bogotá flights
St. Louis to Guayaquil flights
Kansas City to Guayaquil flights
St. Louis to Cartagena flights
Springfield to Jose Maria Cordova Intl flights
St. Louis to Montevideo flights
Kansas City to Cali flights
Springfield to Santiago flights
Kansas City to Brasilia flights
Kansas City to Cuzco flights
St. Louis to Bucaramanga flights
St. Louis to San Cristobal flights
St. Louis to Baltra flights
Kansas City to Caracas flights
St. Louis to La Paz flights
Kansas City to Cordoba flights
Joplin to Bogotá flights
Kansas City to Santa Marta flights
Kansas City to Florianopolis flights
Kansas City to Recife flights
St. Louis to Maracaibo 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$633Average$896FlexibilityNo cancel feeOn-time69%
DeltaCheapest$633Average$808FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$667Average$951FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$668Average$873FlexibilityNo 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.