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.

What are the most popular airlines that fly from St. Louis to Peru?

Consider American Airlines, Delta or LATAM Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to Peru.

How far in advance should I book a flight from St. Louis to Peru?

To save up to 20% on this flight, we recommend booking at least 50 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to Peru from $762 1-2 weeks out and tickets from $1,288 for flights departing within the next 72 hours.

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

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, September can be a great choice for travel to Peru. Flights to Peru from St. Louis in September are about $802 on average during September, but can be found for as low as $647.

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.

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.

$867+ Flights from St. Louis to Peru

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Cheap flight deals from St. Louis to Peru

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$699 (Copa Airlines)
One-way from	$402 (Kiwi.com)
Popular in	July
Cheapest in	September
Average price	$775

Provider with most accurate pricing for Lambert-St Louis-Lima J Chavez Intl flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Lima J Chavez Intl flights.

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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. 6% potential increase in price ($52 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).

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Average for round-trip flights in May 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 May 1, 2025.

Tue 8/268:15 amSTL - LIM

2 stops17h 30mAvianca

Tue 9/96:45 pmLIM - STL

2 stops15h 17mAvianca

Deal found 4/30

$624

Sun 6/110:10 amSTL - LIM

3 stops33h 10mMultiple Airlines

Tue 6/103:00 amLIM - STL

3 stops38h 04mMultiple Airlines

Deal found 4/30

$634

Mon 9/2912:28 pmSTL - LIM

2 stops32h 57mUnited Airlines

Wed 10/812:40 amLIM - STL

1 stop18h 24mUnited Airlines

Deal found 4/30

$664

Tue 10/286:00 amSTL - LIM

2 stops14h 15mDelta

Sun 11/912:05 amLIM - STL

1 stop15h 48mDelta

Deal found 4/30

$669

Thu 9/2511:51 amSTL - LIM

1 stop9h 19mLATAM Airlines

Sat 10/1112:15 amLIM - STL

2 stops17h 47mLATAM Airlines

Deal found 4/30

$693

Wed 7/25:25 amSTL - LIM

1 stop17h 00mAmerican Airlines

Tue 8/1911:45 pmLIM - STL

2 stops16h 29mAmerican Airlines

Deal found 4/30

$710

Thu 10/167:05 pmSTL - CUZ

3 stops28h 15mLATAM Airlines

Tue 10/288:30 amCUZ - STL

2 stops15h 09mLATAM Airlines

Deal found 4/30

$864

Best flights from St. Louis to Peru
Discover carefully curated flight deals from St. Louis to Peru that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Wed 7/28:00 amSTL - LIM

2 stops17h 20mCopa Airlines

Tue 8/1911:00 amLIM - STL

2 stops23h 02mCopa Airlines

Deal found 4/30

$699

Wed 7/25:25 amSTL - LIM

1 stop17h 00mAmerican Airlines

Tue 8/1911:45 pmLIM - STL

2 stops16h 29mAmerican Airlines

Deal found 4/30

$710

Tue 7/2910:46 amSTL - LIM

2 stops21h 14mLATAM Airlines

Mon 8/412:00 pmLIM - STL

1 stop20h 26mLATAM Airlines

Deal found 4/29

$722

Tue 7/299:31 amSTL - LIM

1 stop19h 29mDelta

Mon 8/411:20 pmLIM - STL

1 stop10h 21mDelta

Deal found 4/29

$736

Thu 6/510:10 amSTL - LIM

2 stops14h 45mMultiple Airlines

Fri 6/138:40 amLIM - STL

1 stop31h 22mMultiple Airlines

Deal found 4/30

$768

Wed 6/117:00 amSTL - LIM

1 stop14h 25mUnited Airlines

Tue 6/1712:40 amLIM - STL

2 stops38h 50mUnited Airlines

Deal found 4/30

$791

Fri 6/67:30 amSTL - LIM

2 stops26h 00mAir Canada

Sun 6/82:50 amLIM - STL

2 stops17h 08mAir Canada

Deal found 4/30

$1,447

Wed 7/26:00 amSTL - CUZ

3 stops17h 20mLATAM Airlines

Wed 7/96:50 amCUZ - STL

2 stops17h 03mLATAM Airlines

Deal found 4/29

$976

Wed 7/25:25 amSTL - CUZ

2 stops25h 59mAmerican Airlines

Tue 7/88:57 pmCUZ - STL

2 stops27h 00mAmerican Airlines

Deal found 4/29

$1,021

Wed 7/28:40 pmSTL - CUZ

3 stops38h 20mMultiple Airlines

Tue 7/88:57 pmCUZ - STL

3 stops34h 52mMultiple Airlines

Deal found 4/29

$1,094

Mon 6/91:21 pmSTL - LIM

2 stops41h 09mIberia

Fri 6/2011:00 pmLIM - STL

2 stops48h 54mIberia

Deal found 4/30

$2,713

Last-minute flights from St. Louis to Peru
Discover last-minute flight deals from St. Louis to Peru. Data last updated May 1, 2025 and is based on user searches.

Thu 5/18:25 amSTL - LIM

2 stops49h 05mAvianca

Sat 5/106:45 amLIM - STL

2 stops27h 13mAvianca

Deal found 4/30

$1,055

Sat 5/105:45 pmSTL - LIM

2 stops30h 20mMultiple Airlines

Tue 5/201:05 pmLIM - STL

1 stop26h 55mMultiple Airlines

Deal found 4/30

$790

Sat 5/105:13 amSTL - LIM

1 stop15h 17mAmerican Airlines

Mon 5/1910:00 pmLIM - STL

1 stop19h 29mAmerican Airlines

Deal found 4/30

$984

Sat 5/106:00 amSTL - LIM

1 stop15h 10mDelta

Sun 5/1812:05 amLIM - STL

2 stops17h 56mDelta

Deal found 4/30

$999

Sat 5/104:50 pmSTL - LIM

1 stop30h 10mUnited Airlines

Mon 5/1912:40 amLIM - STL

1 stop15h 09mUnited Airlines

Deal found 4/30

$1,065

Sat 5/246:20 pmSTL - LIM

1 stop9h 50mAmerican Airlines

Fri 5/306:30 amLIM - STL

1 stop10h 59mAmerican Airlines

Deal found 4/30

$944

Sat 5/3112:59 pmSTL - LIM

1 stop16h 01mDelta

Tue 7/112:15 pmLIM - STL

1 stop11h 21mDelta

Deal found 4/30

$837

Sat 5/316:00 amSTL - LIM

2 stops26h 00mLATAM Airlines

Fri 6/1312:05 amLIM - STL

2 stops23h 46mLATAM Airlines

Deal found 4/30

$857

Sat 5/318:25 amSTL - LIM

1 stop14h 35mUnited Airlines

Fri 6/1312:40 amLIM - STL

1 stop21h 47mUnited Airlines

Deal found 4/30

$1,047

One-way flights from St. Louis to Peru
Search for one-way flight options from St. Louis to Peru. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Wed 7/25:47 pmSTL - CUZ

3 stops29h 08mMultiple Airlines

Deal found 4/29

$402

Sat 5/319:55 amSTL - LIM

1 stop19h 05mDelta

Deal found 4/28

$429

Wed 7/210:00 amSTL - CUZ

2 stops25h 00mAvianca

Deal found 4/29

$510

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Peru that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 8/26

8:15 am-1:45 am

2 stops17h 30m

Lima J Chavez Intl

Tue 9/9

6:45 pm-10:02 am

2 stops15h 17m

$624

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sun 6/1

10:10 am-7:20 pm

3 stops33h 10m

Lima J Chavez Intl

Tue 6/10

3:00 am-5:04 pm

3 stops38h 04m

$634

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 9/29

12:28 pm-9:25 pm

2 stops32h 57m

Lima J Chavez Intl

Wed 10/8

12:40 am-7:04 pm

1 stop18h 24m

$664

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 10/27

6:00 am-9:45 pm

2 stops15h 45m

Lima J Chavez Intl

Mon 11/10

9:05 am-11:39 pm

2 stops15h 34m

$669

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Thu 9/25

11:51 am-9:10 pm

1 stop9h 19m

Lima J Chavez Intl

Sat 10/11

12:15 am-6:02 pm

2 stops17h 47m

$693

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Wed 7/2

5:25 am-10:25 pm

1 stop17h 00m

Lima J Chavez Intl

Tue 8/19

11:45 pm-4:14 pm

2 stops16h 29m

$710

St. LouisCusco

STL - CUZ

STLCUZ

Lambert-St Louis

Thu 10/16

7:05 pm-11:20 pm

3 stops28h 15m

Cusco Velazco Astete

Tue 10/28

8:30 am-11:39 pm

2 stops15h 09m

$864

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Fri 6/6

7:30 am-9:30 am

2 stops26h 00m

Lima J Chavez Intl

Sun 6/8

2:50 am-7:58 pm

2 stops17h 08m

$1,447

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 10/27

5:07 pm-6:30 am

2 stops37h 23m

Lima J Chavez Intl

Sat 11/8

11:05 pm-8:16 pm

2 stops46h 11m

$1,975

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sat 5/31

12:59 pm-5:00 am

1 stop16h 01m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 11 results

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?

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

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

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

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

7,934 reviews

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

7,934 reviews

Delta

8.0

Very good

7,934 reviews

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

1,767 reviews

Delta

8.0

Very good

7,934 reviews

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.

Copa Airlines

7.5

Good

1,415 reviews

Delta

8.0

Very good

7,934 reviews

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

8,696 reviews

Delta

8.0

Very good

7,934 reviews

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

7,934 reviews

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

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

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Top 4 airlines flying from St. Louis to Peru

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$633	Average$870	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$633	Average$825	FlexibilityNo cancel fee	On-timeN/A
LATAM Airlines	Cheapest$637	Average$947	FlexibilityNo cancel fee	On-time81%
American Airlines	Cheapest$671	Average$877	FlexibilityNo cancel fee	On-time71%

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$402+ 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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Peru with Cheapflights

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3. Compare prices and book

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 May 1, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Peru

Cheapest flights from St. Louis to PeruExplore 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 May 1, 2025.

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 May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Peru that are best for you.

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.

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?

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 May 1, 2025.

Rainfall in Peru by month

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

Temperature in Peru by month

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

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 May 1, 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.

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?

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

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

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

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

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

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.

Top 4 airlines flying from St. Louis to Peru

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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 May 1, 2025.