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Cheap flights from Santiago to St. Louis from $910

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 5/31. 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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Find the cheapest flights from Santiago to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:09 am - 7:23 pm
SCL
-
STL
64h 14m
3 stops
Multiple Airlines Logo
4:19 pm - 9:55 pm
STL
-
SCL
52h 36m
3 stops
$910Multiple Airlines
Sun, May 31 - Sun, Jun 7
Multiple Airlines Logo
2:56 am - 12:09 am
SCL
-
STL
22h 13m
2 stops
Multiple Airlines Logo
4:10 pm - 6:00 am
STL
-
SCL
36h 50m
2 stops
$936Multiple Airlines
Tue, Jun 30 - Wed, Jul 8
Multiple Airlines Logo
2:27 am - 12:14 am
SCL
-
STL
22h 47m
2 stops
Multiple Airlines Logo
4:10 pm - 4:35 pm
STL
-
SCL
47h 25m
3 stops
$943Multiple Airlines
Fri, Jul 24 - Wed, Aug 19
Multiple Airlines Logo
2:27 am - 5:30 pm
SCL
-
STL
40h 03m
3 stops
Multiple Airlines Logo
4:10 pm - 4:35 pm
STL
-
SCL
47h 25m
3 stops
$945Multiple Airlines
Fri, Jul 24 - Wed, Aug 19
Multiple Airlines Logo
2:56 am - 12:09 am
SCL
-
STL
22h 13m
2 stops
Multiple Airlines Logo
4:10 pm - 5:25 pm
STL
-
SCL
48h 15m
3 stops
$946Multiple Airlines
Tue, Jun 30 - Wed, Jul 8
LATAM Airlines Logo
12:40 am - 5:53 pm
SCL
-
STL
18h 13m
2 stops
LATAM Airlines Logo
6:00 am - 6:00 am
STL
-
SCL
23h 00m
2 stops
$1,008LATAM Airlines
Tue, Jul 14 - Wed, Aug 5
Delta Logo
7:55 pm - 2:35 pm
SCL
-
STL
19h 40m
2 stops
Delta Logo
10:51 am - 7:15 am
STL
-
SCL
19h 24m
1 stop
$1,016Delta
Wed, Jul 15 - Wed, Aug 5
American Airlines Logo
8:30 pm - 10:24 am
SCL
-
STL
14h 54m
1 stop
American Airlines Logo
11:35 am - 6:50 am
STL
-
SCL
18h 15m
1 stop
$1,018American Airlines
Sat, Jul 25 - Wed, Aug 19
American Airlines Logo
8:30 pm - 5:08 pm
SCL
-
STL
21h 38m
2 stops
American Airlines Logo
11:35 am - 6:50 am
STL
-
SCL
18h 15m
1 stop
$1,022American Airlines
Sat, Jul 25 - Wed, Aug 19
Delta Logo
8:40 pm - 3:58 pm
SCL
-
STL
20h 18m
1 stop
Delta Logo
7:08 am - 7:15 am
STL
-
SCL
23h 07m
1 stop
$1,036Delta
Wed, Jul 1 - Wed, Jul 8

LATAM Airlines flights from Santiago to St. Louis

Our best LATAM Airlines deals on Santiago to St. Louis flight tickets
LATAM Airlines
Jul 14
SCL12:40 amSantiago Arturo Merino Benitez
18h 13m
2 stops
STL5:53 pmLambert-St Louis
Aug 5
STL6:00 amLambert-St Louis
23h 00m
2 stops
SCL6:00 amSantiago Arturo Merino Benitez
$1,008
LATAM Airlines
Jun 24
SCL8:30 amSantiago Arturo Merino Benitez
26h 16m
3 stops
STL9:46 amLambert-St Louis
Jul 2
STL5:07 pmLambert-St Louis
19h 58m
2 stops
SCL2:05 pmSantiago Arturo Merino Benitez
$1,130
LATAM Airlines
May 28
SCL8:30 amSantiago Arturo Merino Benitez
26h 14m
3 stops
STL9:44 amLambert-St Louis
Jun 4
STL5:20 pmLambert-St Louis
19h 05m
3 stops
SCL1:25 pmSantiago Arturo Merino Benitez
$1,281

American Airlines flights from Santiago to St. Louis

Our best American Airlines deals on Santiago to St. Louis flight tickets
American Airlines
Jul 25
SCL8:30 pmSantiago Arturo Merino Benitez
14h 54m
1 stop
STL10:24 amLambert-St Louis
Aug 19
STL11:35 amLambert-St Louis
18h 15m
1 stop
SCL6:50 amSantiago Arturo Merino Benitez
$1,018
American Airlines
Jul 25
SCL8:30 pmSantiago Arturo Merino Benitez
21h 38m
2 stops
STL5:08 pmLambert-St Louis
Aug 19
STL11:35 amLambert-St Louis
18h 15m
1 stop
SCL6:50 amSantiago Arturo Merino Benitez
$1,022
American Airlines
Jun 3
SCL9:00 pmSantiago Arturo Merino Benitez
14h 35m
1 stop
STL10:35 amLambert-St Louis
Jul 15
STL5:17 amLambert-St Louis
24h 33m
1 stop
SCL6:50 amSantiago Arturo Merino Benitez
$1,048

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 April 17, 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

Sun 5/31

4:09 am-7:23 pm

3 stops64h 14m

Lambert-St Louis

Sun 6/7

4:19 pm-9:55 pm

3 stops52h 36m

$910

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 6/30

2:56 am-12:09 am

2 stops22h 13m

Lambert-St Louis

Wed 7/8

4:10 pm-6:00 am

2 stops36h 50m

$936

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 7/24

2:27 am-12:14 am

2 stops22h 47m

Lambert-St Louis

Wed 8/19

4:10 pm-4:35 pm

3 stops47h 25m

$943

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 7/24

2:27 am-5:30 pm

3 stops40h 03m

Lambert-St Louis

Wed 8/19

4:10 pm-4:35 pm

3 stops47h 25m

$945

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 6/30

2:56 am-12:09 am

2 stops22h 13m

Lambert-St Louis

Wed 7/8

4:10 pm-5:25 pm

3 stops48h 15m

$946

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 7/14

12:40 am-5:53 pm

2 stops18h 13m

Lambert-St Louis

Wed 8/5

6:00 am-6:00 am

2 stops23h 00m

$1,008

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

7:55 pm-2:35 pm

2 stops19h 40m

Lambert-St Louis

Wed 8/5

10:51 am-7:15 am

1 stop19h 24m

$1,016
Quickest round-trip

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sat 7/25

8:30 pm-10:24 am

1 stop14h 54m

Lambert-St Louis

Wed 8/19

11:35 am-6:50 am

1 stop18h 15m

$1,018

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sat 7/25

8:30 pm-5:08 pm

2 stops21h 38m

Lambert-St Louis

Wed 8/19

11:35 am-6:50 am

1 stop18h 15m

$1,022

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/1

8:40 pm-3:58 pm

1 stop20h 18m

Lambert-St Louis

Wed 7/8

7:08 am-7:15 am

1 stop23h 07m

$1,036

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 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 March is another great option to travel to St. Louis, with average flight prices from Santiago averaging around $835.

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 35m

Direct flights

None
The fastest flight from Santiago to St. Louis takes 16h 35m
There are no direct flights from Santiago to St. Louis. There are no popular flight routes from Santiago to St. Louis.
Search flight deals

Frequently asked questions about flying from Santiago to St. Louis

  • 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 35m.

  • 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
8,406 reviews
Search Delta flights
American AirlinesPriceFrom $948Free CancellationRating
7.1
11,593 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
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Clayton
Festus
Eureka
Litchfield
Edwardsville
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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