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Cheap flights from St. Louis to Peru from $248

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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Find the cheapest flights from St. Louis to Peru

Cheap round-trip flights

Spirit Airlines Logo
12:20 pm - 10:58 pmSTL-LIM
9h 38m1 stop
Spirit Airlines Logo
11:59 pm - 1:53 pmLIM-STL
14h 54m1 stop
$570Spirit Airlines
Find Deal
Tue, Dec 2 - Fri, Dec 12
Spirit Airlines Logo
12:20 pm - 10:58 pmSTL-LIM
9h 38m1 stop
Spirit Airlines Logo
11:59 pm - 1:53 pmLIM-STL
14h 54m1 stop
$596Spirit Airlines
Find Deal
Sun, Nov 23 - Fri, Dec 5
Logo
10:21 am - 10:20 pmSTL-LIM
11h 59m1 stop
Logo
10:05 am - 3:04 pmLIM-STL
28h 59m2 stops
$612
Find Deal
Fri, Sep 19 - Sun, Sep 28
LATAM Airlines Logo
1:55 pm - 6:25 amSTL-LIM
15h 30m2 stops
LATAM Airlines Logo
1:30 pm - 9:41 amLIM-STL
21h 11m2 stops
$648LATAM Airlines
Find Deal
Sun, Nov 23 - Fri, Dec 5
LATAM Airlines Logo
6:01 am - 9:10 pmSTL-LIM
15h 09m1 stop
LATAM Airlines Logo
12:00 pm - 11:41 pmLIM-STL
11h 41m1 stop
$658LATAM Airlines
Find Deal
Sat, Sep 27 - Fri, Oct 10
Logo
5:25 pm - 2:45 pmSTL-LIM
44h 20m2 stops
Logo
11:59 pm - 11:01 amLIM-STL
12h 02m1 stop
$662
Find Deal
Sun, Nov 23 - Sat, Dec 6
Delta Logo
6:00 am - 8:15 pmSTL-LIM
13h 15m2 stops
Delta Logo
8:50 am - 11:39 pmLIM-STL
15h 49m2 stops
$665Delta
Find Deal
Tue, Dec 2 - Fri, Dec 12
Delta Logo
9:21 am - 9:20 pmSTL-LIM
10h 59m1 stop
Delta Logo
11:40 pm - 10:46 amLIM-STL
12h 06m1 stop
$685Delta
Find Deal
Sun, Nov 23 - Wed, Dec 3
American Airlines Logo
7:01 am - 10:25 pmSTL-LIM
15h 24m2 stops
American Airlines Logo
10:00 pm - 12:51 pmLIM-STL
14h 51m2 stops
$744American Airlines
Find Deal
Sat, Sep 20 - Mon, Sep 29
American Airlines Logo
5:28 am - 4:15 pmSTL-LIM
10h 47m1 stop
American Airlines Logo
10:00 pm - 11:59 pmLIM-STL
25h 59m1 stop
$755American Airlines
Find Deal
Sat, Sep 20 - Mon, Sep 29

Spirit Airlines flights from St. Louis to Peru

Our best Spirit Airlines deals on St. Louis to Peru flight tickets
Spirit Airlines
Dec 2
STL12:20 pmLambert-St Louis
9h 38m
1 stop
LIM10:58 pmLima J Chavez Intl
Dec 12
LIM11:59 pmLima J Chavez Intl
14h 54m
1 stop
STL1:53 pmLambert-St Louis
$570
Find similar
Spirit Airlines
Nov 23
STL12:20 pmLambert-St Louis
9h 38m
1 stop
LIM10:58 pmLima J Chavez Intl
Dec 5
LIM11:59 pmLima J Chavez Intl
14h 54m
1 stop
STL1:53 pmLambert-St Louis
$596
Find similar
Spirit Airlines
Nov 23
STL12:20 pmLambert-St Louis
9h 38m
1 stop
LIM10:58 pmLima J Chavez Intl
Dec 5
LIM11:59 pmLima J Chavez Intl
14h 54m
1 stop
STL1:53 pmLambert-St Louis
$598
Find similar

United Airlines flights from St. Louis to Peru

Our best United Airlines deals on St. Louis to Peru flight tickets
United Airlines
Nov 23
STL6:43 pmLambert-St Louis
28h 12m
2 stops
LIM11:55 pmLima J Chavez Intl
Dec 3
LIM1:50 amLima J Chavez Intl
15h 14m
1 stop
STL4:04 pmLambert-St Louis
$649
Find similar
United Airlines
Nov 23
STL6:43 pmLambert-St Louis
28h 12m
2 stops
LIM11:55 pmLima J Chavez Intl
Dec 4
LIM1:50 amLima J Chavez Intl
33h 56m
2 stops
STL10:46 amLambert-St Louis
$669
Find similar
United Airlines
Nov 23
STL6:43 pmLambert-St Louis
28h 12m
2 stops
LIM11:55 pmLima J Chavez Intl
Dec 4
LIM1:50 amLima J Chavez Intl
21h 08m
1 stop
STL9:58 pmLambert-St Louis
$678
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 August 26, 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

Tue 12/2

12:20 pm-10:58 pm

1 stop9h 38m

Lima J Chavez Intl

Fri 12/12

11:59 pm-1:53 pm

1 stop14h 54m

$570

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sun 11/23

12:20 pm-10:58 pm

1 stop9h 38m

Lima J Chavez Intl

Fri 12/5

11:59 pm-1:53 pm

1 stop14h 54m

$596

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Fri 9/19

10:21 am-10:20 pm

1 stop11h 59m

Lima J Chavez Intl

Sun 9/28

10:05 am-3:04 pm

2 stops28h 59m

$612

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sun 11/23

1:55 pm-6:25 am

2 stops15h 30m

Lima J Chavez Intl

Fri 12/5

1:30 pm-9:41 am

2 stops21h 11m

$648

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sat 9/27

6:01 am-9:10 pm

1 stop15h 09m

Lima J Chavez Intl

Fri 10/10

12:00 pm-11:41 pm

1 stop11h 41m

$658

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sun 11/23

5:25 pm-2:45 pm

2 stops44h 20m

Lima J Chavez Intl

Sat 12/6

11:59 pm-11:01 am

1 stop12h 02m

$662

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Tue 12/2

6:00 am-8:15 pm

2 stops13h 15m

Lima J Chavez Intl

Fri 12/12

8:50 am-11:39 pm

2 stops15h 49m

$665

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sun 11/23

9:21 am-9:20 pm

1 stop10h 59m

Lima J Chavez Intl

Wed 12/3

11:40 pm-10:46 am

1 stop12h 06m

$685

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sat 9/20

7:01 am-10:25 pm

2 stops15h 24m

Lima J Chavez Intl

Mon 9/29

10:00 pm-12:51 pm

2 stops14h 51m

$744

St. LouisLima

STL - LIM

STLLIM

Lambert-St Louis

Sat 9/20

5:28 am-4:15 pm

1 stop10h 47m

Lima J Chavez Intl

Mon 9/29

10:00 pm-11:59 pm

1 stop25h 59m

$755

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 September is your next best option. Flight prices from St. Louis to Peru during September average around $693.

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 $780 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 $698 on momondo.

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

You could potentially save up to 26% 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
DeltaPriceFrom $633Free CancellationRating
7.9
7,979 reviews
Search Delta flights
LATAM AirlinesPriceFrom $667Free CancellationRating
7.5
1,843 reviews
Search LATAM Airlines flights
American AirlinesPriceFrom $668Free CancellationRating
7.2
10,000 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

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