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Cheap flights from Santiago to St. Louis from $403

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 2/6. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:10 pm - 9:06 am
SCL
-
STL
12h 56m
1 stop
Delta Logo
10:14 am - 6:55 am
STL
-
SCL
17h 41m
2 stops
$849Delta
Thu, Feb 26 - Thu, Mar 5
American Airlines Logo
8:30 pm - 3:15 pm
SCL
-
STL
19h 45m
2 stops
American Airlines Logo
11:25 am - 6:55 am
STL
-
SCL
18h 30m
2 stops
$863American Airlines
Sun, May 3 - Wed, May 20
LATAM Airlines Logo
7:15 am - 11:36 pm
SCL
-
STL
19h 21m
3 stops
LATAM Airlines Logo
10:13 am - 5:35 am
STL
-
SCL
16h 22m
2 stops
$866LATAM Airlines
Thu, Feb 26 - Thu, Mar 5
Delta Logo
8:40 pm - 8:30 am
SCL
-
STL
12h 50m
1 stop
Delta Logo
6:00 am - 7:15 am
STL
-
SCL
24h 15m
1 stop
$881Delta
Sun, May 3 - Wed, May 20
LATAM Airlines Logo
10:35 am - 11:36 pm
SCL
-
STL
16h 01m
2 stops
LATAM Airlines Logo
6:00 am - 5:35 am
STL
-
SCL
20h 35m
2 stops
$884LATAM Airlines
Sat, Feb 21 - Sat, Mar 7
LATAM Airlines Logo
8:40 pm - 10:34 am
SCL
-
STL
14h 54m
1 stop
LATAM Airlines Logo
5:30 pm - 7:15 am
STL
-
SCL
12h 45m
1 stop
$890LATAM Airlines
Sun, May 3 - Wed, May 20
United Airlines Logo
10:45 pm - 3:38 pm
SCL
-
STL
19h 53m
1 stop
United Airlines Logo
6:55 pm - 8:50 am
STL
-
SCL
34h 55m
2 stops
$903United Airlines
Wed, Feb 25 - Sun, Mar 1
LATAM Airlines Logo
6:30 pm - 11:02 am
SCL
-
STL
19h 32m
2 stops
LATAM Airlines Logo
6:00 am - 5:35 am
STL
-
SCL
20h 35m
2 stops
$905LATAM Airlines
Fri, Feb 27 - Fri, Mar 6
United Airlines Logo
10:45 pm - 2:29 pm
SCL
-
STL
18h 44m
2 stops
United Airlines Logo
6:55 pm - 8:50 am
STL
-
SCL
34h 55m
2 stops
$911United Airlines
Wed, Feb 25 - Sun, Mar 1
LATAM Airlines Logo
11:10 pm - 5:42 pm
SCL
-
STL
21h 32m
1 stop
LATAM Airlines Logo
11:55 am - 7:40 am
STL
-
SCL
16h 45m
1 stop
$913LATAM Airlines
Wed, Feb 25 - Sun, Mar 1

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
STL6:55 pmLambert-St Louis
34h 55m
2 stops
SCL8:50 amSantiago Arturo Merino Benitez
$903
United Airlines
Feb 25
SCL10:45 pmSantiago Arturo Merino Benitez
18h 44m
2 stops
STL2:29 pmLambert-St Louis
Mar 1
STL6:55 pmLambert-St Louis
34h 55m
2 stops
SCL8:50 amSantiago Arturo Merino Benitez
$911
United Airlines
Feb 25
SCL10:45 pmSantiago Arturo Merino Benitez
25h 20m
2 stops
STL9:05 pmLambert-St Louis
Mar 1
STL6:55 pmLambert-St Louis
34h 55m
2 stops
SCL8:50 amSantiago Arturo Merino Benitez
$931

American Airlines flights from Santiago to St. Louis

Our best American Airlines deals on Santiago to St. Louis flight tickets
American Airlines
May 3
SCL8:30 pmSantiago Arturo Merino Benitez
19h 45m
2 stops
STL3:15 pmLambert-St Louis
May 20
STL11:25 amLambert-St Louis
18h 30m
2 stops
SCL6:55 amSantiago Arturo Merino Benitez
$863
American Airlines
May 3
SCL8:30 pmSantiago Arturo Merino Benitez
14h 46m
1 stop
STL10:16 amLambert-St Louis
May 20
STL11:06 amLambert-St Louis
18h 49m
1 stop
SCL6:55 amSantiago Arturo Merino Benitez
$915
American Airlines
Feb 21
SCL11:15 pmSantiago Arturo Merino Benitez
21h 05m
1 stop
STL5:20 pmLambert-St Louis
Mar 7
STL9:35 amLambert-St Louis
19h 30m
1 stop
SCL8:05 amSantiago Arturo Merino Benitez
$942

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 January 14, 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

Thu 2/26

11:10 pm-9:06 am

1 stop12h 56m

Lambert-St Louis

Thu 3/5

10:14 am-6:55 am

2 stops17h 41m

$849

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sun 5/3

8:30 pm-3:15 pm

2 stops19h 45m

Lambert-St Louis

Wed 5/20

11:25 am-6:55 am

2 stops18h 30m

$863

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Thu 2/26

7:15 am-11:36 pm

3 stops19h 21m

Lambert-St Louis

Thu 3/5

10:13 am-5:35 am

2 stops16h 22m

$866

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sun 5/3

8:40 pm-8:30 am

1 stop12h 50m

Lambert-St Louis

Wed 5/20

6:00 am-7:15 am

1 stop24h 15m

$881

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sat 2/21

10:35 am-11:36 pm

2 stops16h 01m

Lambert-St Louis

Sat 3/7

6:00 am-5:35 am

2 stops20h 35m

$884

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sun 5/3

8:40 pm-10:34 am

1 stop14h 54m

Lambert-St Louis

Wed 5/20

5:30 pm-7:15 am

1 stop12h 45m

$890

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

10:45 pm-3:38 pm

1 stop19h 53m

Lambert-St Louis

Sun 3/1

6:55 pm-8:50 am

2 stops34h 55m

$903

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 2/27

6:30 pm-11:02 am

2 stops19h 32m

Lambert-St Louis

Fri 3/6

6:00 am-5:35 am

2 stops20h 35m

$905

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

10:45 pm-2:29 pm

2 stops18h 44m

Lambert-St Louis

Sun 3/1

6:55 pm-8:50 am

2 stops34h 55m

$911

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 2/25

11:10 pm-5:42 pm

1 stop21h 32m

Lambert-St Louis

Sun 3/1

11:55 am-7:40 am

1 stop16h 45m

$913

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 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 airline that flies from Santiago Arturo Merino Benitez to Lambert-St Louis?

LATAM Airlines, Delta, and United Airlines are the most popular carriers operating from Santiago Arturo Merino Benitez to Lambert-St Louis

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

12h 56m

Direct flights

None
The fastest flight from Santiago to St. Louis takes 12h 56m
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 12h 56m.

  • 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
8,048 reviews
Search Delta flights
American AirlinesPriceFrom $948Free CancellationRating
7.2
11,129 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
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Edwardsville
Festus
Glencoe
Litchfield
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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