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Cheap flights from Santiago to St. Louis from $359

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santiago to St. Louis departing on 4/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
11:00 pm - 5:46 pm
SCL
-
STL
19h 46m
2 stops
LATAM Airlines Logo
1:27 pm - 6:55 am
STL
-
SCL
16h 28m
2 stops
$902LATAM Airlines
Mon, May 18 - Tue, May 26
American Airlines Logo
8:35 pm - 10:24 pm
SCL
-
STL
26h 49m
1 stop
American Airlines Logo
11:04 am - 7:05 am
STL
-
SCL
19h 01m
1 stop
$907American Airlines
Mon, May 18 - Tue, May 26
American Airlines Logo
8:35 pm - 10:16 am
SCL
-
STL
14h 41m
1 stop
American Airlines Logo
10:45 am - 7:05 am
STL
-
SCL
19h 20m
2 stops
$912American Airlines
Mon, May 18 - Tue, May 26
LATAM Airlines Logo
5:40 am - 11:56 pm
SCL
-
STL
19h 16m
2 stops
LATAM Airlines Logo
5:19 pm - 2:05 pm
STL
-
SCL
19h 46m
2 stops
$917LATAM Airlines
Wed, Jul 1 - Wed, Jul 8
Delta Logo
11:00 pm - 5:53 pm
SCL
-
STL
19h 53m
2 stops
Delta Logo
10:51 am - 7:15 am
STL
-
SCL
19h 24m
1 stop
$919Delta
Wed, Jul 15 - Wed, Aug 5
American Airlines Logo
9:00 pm - 10:35 am
SCL
-
STL
14h 35m
1 stop
American Airlines Logo
5:17 am - 6:50 am
STL
-
SCL
24h 33m
1 stop
$930American Airlines
Wed, Jun 3 - Wed, Jul 15
American Airlines Logo
9:00 pm - 11:59 am
SCL
-
STL
15h 59m
2 stops
American Airlines Logo
5:17 am - 6:50 am
STL
-
SCL
24h 33m
1 stop
$934American Airlines
Wed, Jun 3 - Wed, Jul 15
LATAM Airlines Logo
11:00 pm - 5:44 pm
SCL
-
STL
19h 44m
2 stops
LATAM Airlines Logo
1:27 pm - 6:55 am
STL
-
SCL
16h 28m
2 stops
$938LATAM Airlines
Mon, May 4 - Mon, May 11
LATAM Airlines Logo
11:00 pm - 5:46 pm
SCL
-
STL
19h 46m
2 stops
LATAM Airlines Logo
1:27 pm - 6:55 am
STL
-
SCL
16h 28m
2 stops
$942LATAM Airlines
Mon, May 18 - Mon, May 25
Delta Logo
8:40 pm - 5:44 pm
SCL
-
STL
22h 04m
1 stop
Delta Logo
9:15 am - 7:15 am
STL
-
SCL
21h 00m
1 stop
$949Delta
Mon, May 4 - Mon, May 11

Delta flights from Santiago to St. Louis

Our best Delta deals on Santiago to St. Louis flight tickets
Delta
Jul 15
SCL11:00 pmSantiago Arturo Merino Benitez
19h 53m
2 stops
STL5:53 pmLambert-St Louis
Aug 5
STL10:51 amLambert-St Louis
19h 24m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$919
Delta
May 4
SCL8:40 pmSantiago Arturo Merino Benitez
22h 04m
1 stop
STL5:44 pmLambert-St Louis
May 11
STL9:15 amLambert-St Louis
21h 00m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$949
Delta
Jul 1
SCL10:55 pmSantiago Arturo Merino Benitez
22h 36m
2 stops
STL8:31 pmLambert-St Louis
Jul 8
STL10:45 amLambert-St Louis
19h 05m
2 stops
SCL6:50 amSantiago Arturo Merino Benitez
$1,016

LATAM Airlines flights from Santiago to St. Louis

Our best LATAM Airlines deals on Santiago to St. Louis flight tickets
LATAM Airlines
May 18
SCL11:00 pmSantiago Arturo Merino Benitez
19h 46m
2 stops
STL5:46 pmLambert-St Louis
May 26
STL1:27 pmLambert-St Louis
16h 28m
2 stops
SCL6:55 amSantiago Arturo Merino Benitez
$902
LATAM Airlines
Jul 1
SCL5:40 amSantiago Arturo Merino Benitez
19h 16m
2 stops
STL11:56 pmLambert-St Louis
Jul 8
STL5:19 pmLambert-St Louis
19h 46m
2 stops
SCL2:05 pmSantiago Arturo Merino Benitez
$917
LATAM Airlines
May 4
SCL11:00 pmSantiago Arturo Merino Benitez
19h 44m
2 stops
STL5:44 pmLambert-St Louis
May 11
STL1:27 pmLambert-St Louis
16h 28m
2 stops
SCL6:55 amSantiago Arturo Merino Benitez
$938

momondo Fare Finder

 
Customize your flight search to find flights from Santiago to St. Louis 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 March 24, 2026.
Use the filters below to find and compare flights from Santiago to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 5/18

11:00 pm-5:46 pm

2 stops19h 46m

Lambert-St Louis

Tue 5/26

1:27 pm-6:55 am

2 stops16h 28m

$902

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 5/18

8:35 pm-10:24 pm

1 stop26h 49m

Lambert-St Louis

Tue 5/26

11:04 am-7:05 am

1 stop19h 01m

$907
Quickest round-trip

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 5/18

8:35 pm-10:16 am

1 stop14h 41m

Lambert-St Louis

Tue 5/26

10:45 am-7:05 am

2 stops19h 20m

$912

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/1

5:40 am-11:56 pm

2 stops19h 16m

Lambert-St Louis

Wed 7/8

5:19 pm-2:05 pm

2 stops19h 46m

$917

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

11:00 pm-5:53 pm

2 stops19h 53m

Lambert-St Louis

Wed 8/5

10:51 am-7:15 am

1 stop19h 24m

$919

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 6/3

9:00 pm-10:35 am

1 stop14h 35m

Lambert-St Louis

Wed 7/15

5:17 am-6:50 am

1 stop24h 33m

$930

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 6/3

9:00 pm-11:59 am

2 stops15h 59m

Lambert-St Louis

Wed 7/15

5:17 am-6:50 am

1 stop24h 33m

$934

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 5/4

11:00 pm-5:44 pm

2 stops19h 44m

Lambert-St Louis

Mon 5/11

1:27 pm-6:55 am

2 stops16h 28m

$938

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 5/18

11:00 pm-5:46 pm

2 stops19h 46m

Lambert-St Louis

Mon 5/25

1:27 pm-6:55 am

2 stops16h 28m

$942

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 5/4

8:40 pm-5:44 pm

1 stop22h 04m

Lambert-St Louis

Mon 5/11

9:15 am-7:15 am

1 stop21h 00m

$949

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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 typical price of a round-trip flight between Santiago and St. Louis?

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

In general, December is the cheapest month to fly from Santiago to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $795. The month of August is another great option to travel to St. Louis, with average flight prices from Santiago averaging around $840.

When to book flights from Santiago to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Santiago to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Santiago to St. Louis (SCL to STL) flight deals and tips

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

Fastest flight time

18h 14m

Direct flights

None
The fastest flight from Santiago to St. Louis takes 18h 14m
There are no direct flights from Santiago to St. Louis. There are no popular flight routes from Santiago to St. Louis.
Search flight deals

  • How far is Santiago Arturo Merino Benitez to Lambert-St Louis by plane?

    Santiago Arturo Merino Benitez and Lambert-St Louis are 5131.6 mi apart from one another. By plane, this route typically takes 18h 14m.

  • When did momondo last update prices for flights from Santiago Arturo Merino Benitez Airport to Lambert-St Louis Airport?

    Prices for flights from Santiago Arturo Merino Benitez Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Santiago Arturo Merino Benitez Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Santiago Arturo Merino Benitez Airport to Lambert-St Louis Airport?

    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 Santiago Arturo Merino Benitez Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Santiago to St. Louis?

Best airlines flying from Santiago to St. Louis

Compare and see reviews for airlines that fly from Santiago to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $542Free CancellationRating
7.9
8,320 reviews
Search Delta flights
American AirlinesPriceFrom $948Free CancellationRating
7.1
11,491 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Edwardsville
Eureka
Litchfield
Shrewsbury
Grafton

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Santiago to St. Louis. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Santiago.

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

Yes momondo offers price alerts on flights to St. Louis from Santiago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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