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Cheap flights from St. Louis to Peru from $267

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Peru departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:02 pm - 1:50 amSTL-LIM
29h 48m2 stops
Multiple Airlines Logo
10:00 am - 6:00 pmLIM-STL
33h 00m1 stop
$574Multiple Airlines
Find Deal
Thu, Nov 6 - Thu, Nov 13
Multiple Airlines Logo
4:56 pm - 2:40 pmSTL-LIM
20h 44m2 stops
Multiple Airlines Logo
10:00 am - 6:00 pmLIM-STL
33h 00m1 stop
$591Multiple Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
LATAM Airlines Logo
2:11 pm - 5:00 amSTL-LIM
13h 49m2 stops
LATAM Airlines Logo
12:15 am - 5:56 pmLIM-STL
18h 41m2 stops
$617LATAM Airlines
Find Deal
Tue, Dec 2 - Thu, Dec 11
LATAM Airlines Logo
6:00 am - 8:15 pmSTL-LIM
13h 15m2 stops
LATAM Airlines Logo
8:25 am - 9:57 pmLIM-STL
14h 32m2 stops
$625LATAM Airlines
Find Deal
Mon, Dec 8 - Tue, Dec 16
Delta Logo
6:00 am - 9:35 pmSTL-LIM
14h 35m2 stops
Delta Logo
12:05 am - 4:33 pmLIM-STL
17h 28m1 stop
$645Delta
Find Deal
Thu, Nov 6 - Wed, Nov 12
United Airlines Logo
5:27 pm - 11:55 pmSTL-LIM
29h 28m3 stops
United Airlines Logo
1:50 am - 9:40 pmLIM-STL
20h 50m2 stops
$650United Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Delta Logo
9:30 am - 9:20 pmSTL-LIM
10h 50m1 stop
Delta Logo
12:05 am - 4:35 pmLIM-STL
17h 30m1 stop
$665Delta
Find Deal
Tue, Dec 2 - Thu, Dec 11
United Airlines Logo
4:35 pm - 11:55 pmSTL-LIM
30h 20m1 stop
United Airlines Logo
1:50 am - 4:04 pmLIM-STL
15h 14m1 stop
$674United Airlines
Find Deal
Sun, Nov 23 - Thu, Dec 4
American Airlines Logo
7:03 am - 11:25 pmSTL-LIM
15h 22m1 stop
American Airlines Logo
12:45 am - 2:57 pmLIM-STL
15h 12m2 stops
$693American Airlines
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Thu, Jan 29 - Sat, Jan 31
American Airlines Logo
5:15 am - 11:25 pmSTL-LIM
17h 10m1 stop
American Airlines Logo
7:00 am - 10:27 pmLIM-STL
16h 27m1 stop
$760American Airlines
Find Deal
Sun, Nov 2 - Sat, Nov 15

American Airlines flights from St. Louis to Peru

Our best American Airlines deals on St. Louis to Peru flight tickets
American Airlines
Jan 29
STL7:03 amLambert-St Louis
15h 22m
1 stop
LIM11:25 pmLima J Chavez Intl
Jan 31
LIM12:45 amLima J Chavez Intl
15h 12m
2 stops
STL2:57 pmLambert-St Louis
$693
Find similar
American Airlines
Nov 2
STL5:15 amLambert-St Louis
17h 10m
1 stop
LIM11:25 pmLima J Chavez Intl
Nov 15
LIM7:00 amLima J Chavez Intl
16h 27m
1 stop
STL10:27 pmLambert-St Louis
$760
Find similar
American Airlines
Jan 29
STL7:03 amLambert-St Louis
13h 27m
1 stop
LIM9:30 pmLima J Chavez Intl
Feb 1
LIM7:00 amLima J Chavez Intl
17h 59m
1 stop
STL11:59 pmLambert-St Louis
$762
Find similar

LATAM Airlines flights from St. Louis to Peru

Our best LATAM Airlines deals on St. Louis to Peru flight tickets
LATAM Airlines
Dec 2
STL2:11 pmLambert-St Louis
13h 49m
2 stops
LIM5:00 amLima J Chavez Intl
Dec 11
LIM12:15 amLima J Chavez Intl
18h 41m
2 stops
STL5:56 pmLambert-St Louis
$617
Find similar
LATAM Airlines
Dec 8
STL6:00 amLambert-St Louis
13h 15m
2 stops
LIM8:15 pmLima J Chavez Intl
Dec 16
LIM8:25 amLima J Chavez Intl
14h 32m
2 stops
STL9:57 pmLambert-St Louis
$625
Find similar
LATAM Airlines
Dec 2
STL9:30 amLambert-St Louis
11h 10m
2 stops
LIM9:40 pmLima J Chavez Intl
Dec 12
LIM12:15 pmLima J Chavez Intl
12h 25m
1 stop
STL11:40 pmLambert-St Louis
$631
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 9, 2025.
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

Thu 11/6

7:02 pm-1:50 am

2 stops29h 48m

Lima J Chavez Intl

Thu 11/13

10:00 am-6:00 pm

1 stop33h 00m

$574

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Fri 11/7

4:56 pm-2:40 pm

2 stops20h 44m

Lima J Chavez Intl

Tue 11/11

10:00 am-6:00 pm

1 stop33h 00m

$591

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 12/2

2:11 pm-5:00 am

2 stops13h 49m

Lima J Chavez Intl

Thu 12/11

12:15 am-5:56 pm

2 stops18h 41m

$617

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 12/8

6:00 am-8:15 pm

2 stops13h 15m

Lima J Chavez Intl

Tue 12/16

8:25 am-9:57 pm

2 stops14h 32m

$625

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Thu 11/6

6:00 am-9:35 pm

2 stops14h 35m

Lima J Chavez Intl

Wed 11/12

12:05 am-4:33 pm

1 stop17h 28m

$645

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Mon 12/8

5:27 pm-11:55 pm

3 stops29h 28m

Lima J Chavez Intl

Mon 12/15

1:50 am-9:40 pm

2 stops20h 50m

$650

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 12/2

9:30 am-9:20 pm

1 stop10h 50m

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

Sun 11/23

4:35 pm-11:55 pm

1 stop30h 20m

Lima J Chavez Intl

Thu 12/4

1:50 am-4:04 pm

1 stop15h 14m

$674

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Thu 1/29

7:03 am-11:25 pm

1 stop15h 22m

Lima J Chavez Intl

Sat 1/31

12:45 am-2:57 pm

2 stops15h 12m

$693

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sun 11/2

5:15 am-11:25 pm

1 stop17h 10m

Lima J Chavez Intl

Sat 11/15

7:00 am-10:27 pm

1 stop16h 27m

$760

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Peru from

How to get the cheapest flight ticket from St. Louis to Peru

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Peru?

In general, February is the cheapest month to fly from St. Louis to Peru. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $665. If you’re not able to fly to Peru in February, then August is your next best option. Flight prices from St. Louis to Peru during August average around $735.

What is the cheapest day to depart on your flight to Peru?

The cheapest day to depart from St. Louis to Peru is on a Wednesday when prices can be found for as low as $741. On the other hand, Friday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $967.

What is the cheapest time of day to depart on your flight to Peru?

The cheapest time of day to fly to Peru is in the morning when flights can be purchased for as low as $785. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $831 on average. Flights to Peru from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Peru?

You are more likely to see cheaper flights to Peru from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Peru for around $791 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Peru from St. Louis for as low as $674 on momondo.

Can stopping save me money on St. Louis to Peru flights?

You could potentially save up to 47% on your flight if you consider stops on a St. Louis to Peru flight.

Cheap St. Louis to Peru flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Peru

Direct flights

None
There are no direct flights from St. Louis to Peru. There are no popular flight routes from St. Louis to Peru.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Peru?

    Prices for flights from Lambert-St Louis Airport to Peru are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Peru?

  • How old do you have to be to fly from Lambert-St Louis Airport to Peru?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Peru.

  • What documentation or ID do you need to fly to Peru?

    The travel and health documents you'll need for your trip to Peru may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Peru. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Peru

Compare and see reviews for airlines that fly from St. Louis to Peru with momondo
Airline
Rating
Free Cancellation
Price
LATAM AirlinesPriceFrom $659Free CancellationRating
7.5
1,861 reviews
Search LATAM Airlines flights
DeltaPriceFrom $667Free CancellationRating
7.9
7,969 reviews
Search Delta flights
American AirlinesPriceFrom $668Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Peru?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Peru. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Peru with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Peru flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Peru?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Peru.

I’m not ready to book a flight from St. Louis to Peru right now. Can momondo alert me if prices change?

Price alerts on flights to Peru from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Peru

Popular cities in Peru

Popular flights according to clicks in the last 7 days on momondo
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