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Cheap flights from Santiago to St. Louis from $841

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Santiago to St. Louis departing on 3/31. 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.
LATAM Airlines Logo
7:45 pm - 11:09 am
SCL
-
STL
17h 24m
2 stops
LATAM Airlines Logo
10:12 am - 5:35 am
STL
-
SCL
18h 23m
2 stops
$841LATAM Airlines
Tue, Mar 31 - Tue, Apr 7
Delta Logo
8:45 pm - 3:13 pm
SCL
-
STL
20h 28m
2 stops
Delta Logo
1:39 pm - 6:55 am
STL
-
SCL
16h 16m
2 stops
$849Delta
Thu, Apr 2 - Thu, Apr 9
American Airlines Logo
9:25 pm - 5:40 pm
SCL
-
STL
22h 15m
1 stop
American Airlines Logo
5:24 am - 7:05 am
STL
-
SCL
24h 41m
1 stop
$855American Airlines
Tue, Mar 31 - Tue, Apr 7
LATAM Airlines Logo
11:10 pm - 11:02 am
SCL
-
STL
14h 52m
1 stop
LATAM Airlines Logo
6:00 am - 7:40 am
STL
-
SCL
22h 40m
1 stop
$1,047LATAM Airlines
Wed, Feb 25 - Sun, Mar 1
Multiple Airlines Logo
5:30 pm - 3:24 pm
SCL
-
STL
47h 54m
2 stops
Multiple Airlines Logo
4:05 pm - 9:00 pm
STL
-
SCL
27h 55m
3 stops
$1,096Multiple Airlines
Tue, Mar 31 - Tue, Apr 7
LATAM Airlines Logo
3:05 pm - 11:02 am
SCL
-
STL
22h 57m
3 stops
LATAM Airlines Logo
6:00 am - 7:40 am
STL
-
SCL
22h 40m
1 stop
$1,102LATAM Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
10:45 pm - 10:14 pm
SCL
-
STL
26h 29m
1 stop
United Airlines Logo
6:00 am - 8:50 am
STL
-
SCL
23h 50m
1 stop
$1,121United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
10:45 pm - 4:02 pm
SCL
-
STL
20h 17m
2 stops
United Airlines Logo
6:00 am - 8:50 am
STL
-
SCL
23h 50m
1 stop
$1,134United Airlines
Wed, Feb 25 - Sun, Mar 1
Multiple Airlines Logo
7:40 am - 3:24 pm
SCL
-
STL
33h 44m
3 stops
Multiple Airlines Logo
4:05 pm - 4:17 am
STL
-
SCL
35h 12m
3 stops
$1,191Multiple Airlines
Thu, Apr 2 - Thu, Apr 9
United Airlines Logo
10:45 pm - 9:05 pm
SCL
-
STL
49h 20m
2 stops
United Airlines Logo
7:41 am - 8:50 am
STL
-
SCL
46h 09m
2 stops
$1,203United Airlines
Wed, Feb 25 - Sun, Mar 1

LATAM Airlines flights from Santiago to St. Louis

Our best LATAM Airlines deals on Santiago to St. Louis flight tickets
LATAM Airlines
Mar 31
SCL7:45 pmSantiago Arturo Merino Benitez
17h 24m
2 stops
STL11:09 amLambert-St Louis
Apr 7
STL10:12 amLambert-St Louis
18h 23m
2 stops
SCL5:35 amSantiago Arturo Merino Benitez
$841
LATAM Airlines
Feb 25
SCL11:10 pmSantiago Arturo Merino Benitez
14h 52m
1 stop
STL11:02 amLambert-St Louis
Mar 1
STL6:00 amLambert-St Louis
22h 40m
1 stop
SCL7:40 amSantiago Arturo Merino Benitez
$1,047
LATAM Airlines
Feb 25
SCL3:05 pmSantiago Arturo Merino Benitez
22h 57m
3 stops
STL11:02 amLambert-St Louis
Mar 1
STL6:00 amLambert-St Louis
22h 40m
1 stop
SCL7:40 amSantiago Arturo Merino Benitez
$1,102

United Airlines flights from Santiago to St. Louis

Our best United Airlines deals on Santiago to St. Louis flight tickets
United Airlines
Feb 25
SCL10:45 pmSantiago Arturo Merino Benitez
19h 53m
1 stop
STL3:38 pmLambert-St Louis
Mar 1
STL6:00 amLambert-St Louis
23h 50m
1 stop
SCL8:50 amSantiago Arturo Merino Benitez
$1,121
United Airlines
Feb 25
SCL10:45 pmSantiago Arturo Merino Benitez
25h 20m
2 stops
STL9:05 pmLambert-St Louis
Mar 1
STL6:00 amLambert-St Louis
23h 50m
1 stop
SCL8:50 amSantiago Arturo Merino Benitez
$1,134
United Airlines
Feb 25
SCL10:45 pmSantiago Arturo Merino Benitez
49h 20m
2 stops
STL9:05 pmLambert-St Louis
Mar 1
STL7:41 amLambert-St Louis
46h 09m
2 stops
SCL8:50 amSantiago Arturo Merino Benitez
$1,203

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 February 16, 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

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 3/31

7:45 pm-11:09 am

2 stops17h 24m

Lambert-St Louis

Tue 4/7

10:12 am-5:35 am

2 stops18h 23m

$841

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Thu 4/2

8:45 pm-3:13 pm

2 stops20h 28m

Lambert-St Louis

Thu 4/9

1:39 pm-6:55 am

2 stops16h 16m

$849

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 3/31

9:25 pm-5:40 pm

1 stop22h 15m

Lambert-St Louis

Tue 4/7

5:24 am-7:05 am

1 stop24h 41m

$855

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

11:10 pm-11:02 am

1 stop14h 52m

Lambert-St Louis

Sun 3/1

6:00 am-7:40 am

1 stop22h 40m

$1,047

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 3/31

5:30 pm-3:24 pm

2 stops47h 54m

Lambert-St Louis

Tue 4/7

4:05 pm-9:00 pm

3 stops27h 55m

$1,096

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

3:05 pm-11:02 am

3 stops22h 57m

Lambert-St Louis

Sun 3/1

6:00 am-7:40 am

1 stop22h 40m

$1,102

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

10:45 pm-10:14 pm

1 stop26h 29m

Lambert-St Louis

Sun 3/1

6:00 am-8:50 am

1 stop23h 50m

$1,121

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

10:45 pm-4:02 pm

2 stops20h 17m

Lambert-St Louis

Sun 3/1

6:00 am-8:50 am

1 stop23h 50m

$1,134

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Thu 4/2

7:40 am-3:24 pm

3 stops33h 44m

Lambert-St Louis

Thu 4/9

4:05 pm-4:17 am

3 stops35h 12m

$1,191

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

10:45 pm-9:05 pm

2 stops49h 20m

Lambert-St Louis

Sun 3/1

7:41 am-8:50 am

2 stops46h 09m

$1,203

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 cheapest month to fly to St. Louis?

In general, August 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 $777. The month of December is another great option to travel to St. Louis, with average flight prices from Santiago averaging around $795.

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

16h 40m

Direct flights

None
The fastest flight from Santiago to St. Louis takes 16h 40m
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 16h 40m.

  • 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 $877Free CancellationRating
7.9
8,206 reviews
Search Delta flights
American AirlinesPriceFrom $948Free CancellationRating
7.2
11,294 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
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

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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