Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Santiago to St. Louis from $517

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 8/7. 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

Find the cheapest flights from Santiago to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
8:40 pm - 9:43 am
SCL
-
STL
14h 03m
1 stop
LATAM Airlines Logo
11:00 am - 3:00 pm
STL
-
SCL
27h 00m
2 stops
$864LATAM Airlines
Wed, Jul 15 - Wed, Aug 5
Delta Logo
11:00 pm - 4:17 pm
SCL
-
STL
18h 17m
2 stops
Delta Logo
6:00 am - 7:15 am
STL
-
SCL
24h 15m
1 stop
$866Delta
Tue, Aug 4 - Tue, Aug 11
LATAM Airlines Logo
8:40 pm - 9:43 am
SCL
-
STL
14h 03m
1 stop
LATAM Airlines Logo
11:00 am - 3:00 pm
STL
-
SCL
27h 00m
2 stops
$867LATAM Airlines
Wed, Jul 15 - Wed, Aug 5
LATAM Airlines Logo
8:40 pm - 9:43 am
SCL
-
STL
14h 03m
1 stop
LATAM Airlines Logo
11:00 am - 3:00 pm
STL
-
SCL
27h 00m
2 stops
$870LATAM Airlines
Wed, Jul 15 - Wed, Aug 5
LATAM Airlines Logo
12:40 am - 5:53 pm
SCL
-
STL
18h 13m
2 stops
LATAM Airlines Logo
11:00 am - 3:00 pm
STL
-
SCL
27h 00m
2 stops
$874LATAM Airlines
Tue, Jul 14 - Wed, Aug 5
LATAM Airlines Logo
7:13 am - 11:39 pm
SCL
-
STL
19h 26m
2 stops
LATAM Airlines Logo
4:40 pm - 2:05 pm
STL
-
SCL
18h 25m
2 stops
$875LATAM Airlines
Tue, Dec 1 - Tue, Dec 8
LATAM Airlines Logo
8:40 pm - 9:43 am
SCL
-
STL
14h 03m
1 stop
LATAM Airlines Logo
3:58 pm - 2:05 pm
STL
-
SCL
21h 07m
2 stops
$897LATAM Airlines
Tue, Jul 14 - Tue, Jul 28
American Airlines Logo
8:50 pm - 10:45 am
SCL
-
STL
14h 55m
1 stop
American Airlines Logo
10:16 am - 7:05 am
STL
-
SCL
19h 49m
2 stops
$902American Airlines
Fri, Aug 7 - Fri, Aug 14
LATAM Airlines Logo
10:55 pm - 5:53 pm
SCL
-
STL
19h 58m
2 stops
LATAM Airlines Logo
3:58 pm - 2:05 pm
STL
-
SCL
21h 07m
2 stops
$921LATAM Airlines
Tue, Jul 14 - Tue, Jul 28
LATAM Airlines Logo
8:40 pm - 12:17 pm
SCL
-
STL
16h 37m
1 stop
LATAM Airlines Logo
6:58 pm - 8:55 pm
STL
-
SCL
24h 57m
2 stops
$923LATAM Airlines
Tue, Jul 14 - Tue, Jul 28

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Delta flights from Santiago to St. Louis

Our best Delta deals on Santiago to St. Louis flight tickets
Delta
Aug 4
SCL8:40 pmSantiago Arturo Merino Benitez
14h 14m
1 stop
STL9:54 amLambert-St Louis
Aug 11
STL3:39 pmLambert-St Louis
14h 36m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$866
Delta
Jul 1
SCL7:55 pmSantiago Arturo Merino Benitez
19h 57m
2 stops
STL2:52 pmLambert-St Louis
Jul 8
STL1:22 pmLambert-St Louis
16h 53m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$888
Delta
Jul 1
SCL8:40 pmSantiago Arturo Merino Benitez
28h 16m
1 stop
STL11:56 pmLambert-St Louis
Jul 8
STL6:00 amLambert-St Louis
24h 15m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$930

LATAM Airlines flights from Santiago to St. Louis

Our best LATAM Airlines deals on Santiago to St. Louis flight tickets
LATAM Airlines
Jul 15
SCL8:40 pmSantiago Arturo Merino Benitez
14h 03m
1 stop
STL9:43 amLambert-St Louis
Aug 5
STL11:00 amLambert-St Louis
27h 00m
2 stops
SCL3:00 pmSantiago Arturo Merino Benitez
$864
LATAM Airlines
Jul 9
SCL7:25 amSantiago Arturo Merino Benitez
17h 28m
2 stops
STL11:53 pmLambert-St Louis
Jul 28
STL6:00 amLambert-St Louis
30h 35m
2 stops
SCL1:35 pmSantiago Arturo Merino Benitez
$867
LATAM Airlines
Jul 15
SCL8:40 pmSantiago Arturo Merino Benitez
14h 03m
1 stop
STL9:43 amLambert-St Louis
Aug 5
STL11:00 amLambert-St Louis
27h 00m
2 stops
SCL3:00 pmSantiago Arturo Merino Benitez
$870

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 June 25, 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

Wed 7/15

8:40 pm-9:43 am

1 stop14h 03m

Lambert-St Louis

Wed 8/5

11:00 am-3:00 pm

2 stops27h 00m

$864

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 8/4

11:00 pm-4:17 pm

2 stops18h 17m

Lambert-St Louis

Tue 8/11

6:00 am-7:15 am

1 stop24h 15m

$866

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

8:40 pm-9:43 am

1 stop14h 03m

Lambert-St Louis

Wed 8/5

11:00 am-3:00 pm

2 stops27h 00m

$867

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

8:40 pm-9:43 am

1 stop14h 03m

Lambert-St Louis

Wed 8/5

11:00 am-3:00 pm

2 stops27h 00m

$870

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

11:00 am-3:00 pm

2 stops27h 00m

$874

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 12/1

7:13 am-11:39 pm

2 stops19h 26m

Lambert-St Louis

Tue 12/8

4:40 pm-2:05 pm

2 stops18h 25m

$875

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 7/14

8:40 pm-9:43 am

1 stop14h 03m

Lambert-St Louis

Tue 7/28

3:58 pm-2:05 pm

2 stops21h 07m

$897
Quickest round-trip

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 8/7

8:50 pm-10:45 am

1 stop14h 55m

Lambert-St Louis

Fri 8/14

10:16 am-7:05 am

2 stops19h 49m

$902

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 7/14

10:55 pm-5:53 pm

2 stops19h 58m

Lambert-St Louis

Tue 7/28

3:58 pm-2:05 pm

2 stops21h 07m

$921

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 7/14

8:40 pm-12:17 pm

1 stop16h 37m

Lambert-St Louis

Tue 7/28

6:58 pm-8:55 pm

2 stops24h 57m

$923

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 November is another great option to travel to St. Louis, with average flight prices from Santiago averaging around $913.

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

You could potentially save up to 32% on your flight if you consider stops on a Santiago to St. Louis flight.

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 17m

Direct flights

None
The fastest flight from Santiago to St. Louis takes 18h 17m
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 18h 17m.

  • 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 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.

Traveling to a place near St. Louis?

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

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 7/25
Sat 8/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States