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Peru

$446+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIM
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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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 July 30, 2025.

Round-trip from

$635
(Mytrip)

One-way from

$446
(United Airlines)

Popular in

July

Cheapest in

September

Average price

$887
From Lambert-St Louis to Peru
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One-way flight from Lambert-St Louis to Peru
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Highest demand for flights based on searches. 4% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 30, 2025.

This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2810:37 amSTL - CUZ
3 stops34h 27mMultiple Airlines
Wed 9/108:02 amCUZ - STL
3 stops25h 38mMultiple Airlines
Deal found 7/30$635
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:26 amSTL - LIM
1 stop16h 59mAmerican Airlines
Tue 9/96:30 amLIM - STL
1 stop17h 29mAmerican Airlines
Deal found 7/30$645
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/91:30 pmSTL - LIM
2 stops15h 55mLATAM Airlines
Thu 11/2012:15 pmLIM - STL
1 stop12h 24mLATAM Airlines
Deal found 7/29$657
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2810:37 amSTL - LIM
3 stops37h 58mMultiple Airlines
Tue 9/23:00 amLIM - STL
3 stops30h 40mMultiple Airlines
Deal found 7/29$660
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:51 amSTL - LIM
2 stops17h 34mDelta
Thu 11/278:25 amLIM - STL
2 stops13h 04mDelta
Deal found 7/29$673
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:15 amSTL - LIM
1 stop16h 40mUnited Airlines
Fri 12/1211:55 pmLIM - STL
2 stops16h 45mUnited Airlines
Deal found 7/28$674
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/281:30 pmSTL - CUZ
2 stops21h 10mDelta
Wed 9/107:00 pmCUZ - STL
2 stops19h 35mDelta
Deal found 7/30$718
This LATAM Airlines deal was found by Cheapflights users on 7/29. 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.
Sun 11/96:00 amSTL - CUZ
2 stops17h 45mLATAM Airlines
Thu 11/137:25 pmCUZ - STL
2 stops23h 37mLATAM Airlines
Deal found 7/29$777
This LATAM Airlines deal was found by Cheapflights users on 7/29. 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 12/66:00 amSTL - AQP
2 stops24h 30mLATAM Airlines
Wed 12/109:10 amAQP - STL
2 stops13h 49mLATAM Airlines
Deal found 7/29$798
This LATAM Airlines deal was found by Cheapflights users on 7/28. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/610:51 amSTL - TPP
2 stops21h 09mLATAM Airlines
Wed 12/101:50 pmTPP - STL
2 stops21h 56mLATAM Airlines
Deal found 7/28$892
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1210:35 amSTL - AQP
3 stops33h 15mMultiple Airlines
Sat 10/188:26 amAQP - STL
3 stops25h 14mMultiple Airlines
Deal found 7/29$1,104
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/124:25 pmSTL - AQP
3 stops15h 21mAmerican Airlines
Sat 10/189:16 pmAQP - STL
2 stops20h 12mAmerican Airlines
Deal found 7/29$1,970

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 July 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. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Thu 8/28

10:37 am-9:04 pm

3 stops34h 27m

Cusco Velazco Astete

Wed 9/10

8:02 am-9:40 am

3 stops25h 38m

$635

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 8/26

5:26 am-10:25 pm

1 stop16h 59m

Lima J Chavez Intl

Tue 9/9

6:30 am-11:59 pm

1 stop17h 29m

$645

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Thu 8/28

10:37 am-12:35 am

3 stops37h 58m

Lima J Chavez Intl

Tue 9/2

3:00 am-9:40 am

3 stops30h 40m

$660

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 9/29

8:25 am-11:00 pm

1 stop14h 35m

Lima J Chavez Intl

Wed 10/8

12:40 am-6:57 pm

1 stop18h 17m

$694

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Thu 8/28

1:30 pm-10:40 am

2 stops21h 10m

Cusco Velazco Astete

Wed 9/10

7:00 pm-2:35 pm

2 stops19h 35m

$718

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Thu 9/25

11:04 am-8:00 am

2 stops20h 56m

Lima J Chavez Intl

Wed 10/8

12:05 am-11:41 pm

2 stops23h 36m

$743

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sun 9/28

6:42 pm-6:25 am

2 stops11h 43m

Lima J Chavez Intl

Fri 10/10

8:50 am-9:40 am

2 stops24h 50m

$770

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Sun 11/9

6:00 am-12:45 am

2 stops17h 45m

Cusco Velazco Astete

Thu 11/13

7:25 pm-6:02 pm

2 stops23h 37m

$777

St. LouisArequipa

STL - AQP

STLAQP

Lambert-St Louis

Sat 12/6

6:00 am-7:30 am

2 stops24h 30m

Arequipa Rodriguez Ballon

Wed 12/10

9:10 am-9:59 pm

2 stops13h 49m

$798

St. LouisTarapoto

STL - TPP

STLTPP

Lambert-St Louis

Sat 12/6

10:51 am-9:00 am

2 stops21h 09m

Tarapoto

Wed 12/10

1:50 pm-10:46 am

2 stops21h 56m

$892

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 17 results
1
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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, 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 July 30, 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.

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 July 30, 2025.
Read through reviews of airlines operating flights from St. Louis to Peru, such as Delta, LATAM Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
1,822 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

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 United Airlines. According to our data, you can fly for as low as $446. Users have also found prices from $524 and $641 on Delta 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

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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$633Average$798FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$667Average$876FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$668Average$871FlexibilityNo cancel feeOn-time71%

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