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Peru

$237+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIM
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This KAYAK deal was found by Cheapflights users on 10/30. 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.
Thu 12/112:47 pmSTL - LIM
1 stop30h 48mSpirit Airlines
Sat 12/2011:37 pmLIM - STL
1 stop12h 19mSpirit Airlines
Deal found 10/30$495
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:30 pmSTL - LIM
2 stops30h 05mMultiple Airlines
Sat 12/2011:37 pmLIM - STL
1 stop12h 19mMultiple Airlines
Deal found 10/30$547
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:04 pmSTL - LIM
2 stops33h 31mMultiple Airlines
Sat 12/2011:37 pmLIM - STL
1 stop12h 19mMultiple Airlines
Deal found 10/30$548
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:47 pmSTL - LIM
1 stop30h 48mMultiple Airlines
Fri 12/1911:37 pmLIM - STL
2 stops35h 03mMultiple Airlines
Deal found 10/30$594
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/133:30 pmSTL - LIM
2 stops30h 05mMultiple Airlines
Sat 12/2011:37 pmLIM - STL
1 stop12h 19mMultiple Airlines
Deal found 10/29$600
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:42 amSTL - LIM
2 stops35h 28mMultiple Airlines
Sat 12/2011:37 pmLIM - STL
1 stop12h 19mMultiple Airlines
Deal found 10/30$613
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:47 pmSTL - LIM
1 stop30h 48mMultiple Airlines
Thu 12/1811:37 pmLIM - STL
2 stops23h 56mMultiple Airlines
Deal found 10/30$625
This Delta deal was found by Cheapflights users on 10/28. 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.
Wed 11/269:33 amSTL - LIM
1 stop18h 27mDelta
Wed 12/311:40 pmLIM - STL
1 stop17h 26mDelta
Deal found 10/28$645
This KAYAK deal was found by Cheapflights users on 10/30. 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.
Wed 12/109:30 amSTL - LIM
2 stops21h 45mLATAM Airlines
Thu 12/1812:15 pmLIM - STL
1 stop10h 42mLATAM Airlines
Deal found 10/30$648
This LATAM Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 12/65:12 pmSTL - AQP
2 stops17h 53mLATAM Airlines
Wed 12/107:50 pmAQP - STL
2 stops15h 55mLATAM Airlines
Deal found 10/29$947
This LATAM Airlines deal was found by Cheapflights users on 10/30. 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.
Sat 12/65:12 pmSTL - TPP
2 stops19h 03mLATAM Airlines
Wed 12/108:00 amTPP - STL
2 stops14h 57mLATAM Airlines
Deal found 10/30$967
This KAYAK deal was found by Cheapflights users on 10/30. 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.
Thu 12/119:30 amSTL - CUZ
2 stops20h 55mLATAM Airlines
Sun 12/2110:45 pmCUZ - STL
2 stops25h 57mLATAM Airlines
Deal found 10/30$1,001

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$481
(Travelocity)

One-way from

$226
(KAYAK)

Popular in

June

Cheapest in

February

Average price

$739
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. 5% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 30, 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 4/6

6:00 am-9:45 pm

2 stops15h 45m

Lima J Chavez Intl

Wed 4/22

8:50 am-11:38 pm

2 stops14h 48m

$644

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 3/3

10:10 am-11:55 pm

1 stop12h 45m

Lima J Chavez Intl

Mon 3/9

1:30 am-3:54 pm

1 stop14h 24m

$644

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Wed 12/10

9:30 am-8:15 am

2 stops21h 45m

Lima J Chavez Intl

Thu 12/18

12:15 pm-9:57 pm

1 stop10h 42m

$648

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Wed 11/26

6:00 am-8:15 pm

2 stops13h 15m

Lima J Chavez Intl

Tue 12/2

12:15 am-4:21 pm

2 stops17h 06m

$650

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 4/7

4:17 pm-11:00 pm

1 stop30h 43m

Lima J Chavez Intl

Sun 4/19

12:55 am-9:42 am

1 stop32h 47m

$662

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 12/2

7:05 am-9:20 pm

1 stop13h 15m

Lima J Chavez Intl

Thu 12/11

12:05 am-4:35 pm

1 stop17h 30m

$665

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 12/2

6:00 am-8:55 pm

2 stops13h 55m

Lima J Chavez Intl

Fri 12/12

8:50 am-10:24 am

2 stops26h 34m

$668

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Tue 3/3

6:00 am-11:20 am

2 stops28h 20m

Cusco Velazco Astete

Tue 3/10

5:10 pm-3:54 pm

2 stops22h 44m

$701

St. LouisArequipa

STL - AQP

STLAQP

Lambert-St Louis

Sat 12/6

1:35 pm-12:05 pm

2 stops21h 30m

Arequipa Rodriguez Ballon

Wed 12/10

8:10 am-9:57 pm

2 stops14h 47m

$947

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Tue 3/24

11:30 am-6:26 am

2 stops18h 56m

Cusco Velazco Astete

Fri 4/3

5:17 pm-3:42 pm

2 stops22h 25m

$962

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 22 results
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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, February is the cheapest month in which you can book a flight from St. Louis to Peru (average of $538). Flying from St. Louis to Peru in June is currently the most expensive (average of $702). 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 October 30, 2025.

One of the essential ways to save on airfare from St. Louis to Peru is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 29% on airfare.

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 October 30, 2025.
Read through reviews of airlines operating flights from St. Louis to Peru, such as Delta, LATAM Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,993 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,993 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
LATAM Airlines
7.5
Good
1,872 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,030 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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.

  • How long is the flight from St. Louis to Peru?

    There are many flights that can get you from St. Louis to Peru in 12h 45m. Fly via Delta, United Airlines, or LATAM Airlines to get the fastest option. The distance from St. Louis to Peru is about 3608 mi. This flight may include one or multiple stops.

  • 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, February is the cheapest month in which you can book a flight from St. Louis to Peru (average of $538). Flying from St. Louis to Peru in June is currently the most expensive (average of $702). 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

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Alternative routes for St. Louis to Peru

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from St. Louis to Peru

Discover the top 3 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$644Average$1,028FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$667Average$885FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$668Average$861FlexibilityNo cancel feeOn-time71%

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