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$358+ Cheap flights from Santiago (SCL) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
SCL — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Santiago to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Santiago (SCL) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$772
(American Airlines)

One-way from

$358
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$1,019
From Santiago Arturo Merino Benitez to Lambert-St Louis
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One-way flight from Santiago Arturo Merino Benitez to Lambert-St Louis
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Highest demand for flights based on searches. 6% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Santiago to St. Louis

Cheapest flights from Santiago to St. Louis
Explore the most affordable flight options available from Santiago to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:55 pmSCL - STL
1 stop28h 01mAmerican Airlines
Tue 10/285:23 amSTL - SCL
1 stop25h 32mAmerican Airlines
Deal found 9/9$772
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:40 pmSCL - STL
1 stop16h 55mDelta
Mon 10/275:15 pmSTL - SCL
1 stop12h 25mDelta
Deal found 9/10$775
This LATAM Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1412:10 amSCL - STL
2 stops19h 52mLATAM Airlines
Tue 10/285:15 pmSTL - SCL
2 stops19h 10mLATAM Airlines
Deal found 9/9$782
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:15 amSCL - STL
2 stops21h 25mDelta
Mon 11/179:21 amSTL - SCL
2 stops16h 09mDelta
Deal found 9/9$784
This LATAM Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1412:10 amSCL - STL
2 stops19h 52mLATAM Airlines
Mon 10/276:52 pmSTL - SCL
2 stops17h 33mLATAM Airlines
Deal found 9/10$787
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:45 pmSCL - STL
2 stops44h 02mUnited Airlines
Sun 11/26:43 pmSTL - SCL
2 stops35h 07mUnited Airlines
Deal found 9/11$819
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/155:51 amSCL - STL
3 stops30h 11mMultiple Airlines
Mon 10/274:05 pmSTL - SCL
3 stops35h 45mMultiple Airlines
Deal found 9/10$822
This Mytrip deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/155:51 amSCL - STL
3 stops30h 11mMultiple Airlines
Tue 10/284:05 pmSTL - SCL
3 stops35h 45mMultiple Airlines
Deal found 9/11$824
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2512:25 amSCL - STL
2 stops23h 03mDelta
Sun 11/21:30 pmSTL - SCL
2 stops13h 30mDelta
Deal found 9/11$855

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Santiago to St. Louis that are best for you.

Fly from

Santiago

Fly to

St. Louis

Route

Depart

Return

Price

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 10/15

9:55 pm-11:56 pm

1 stop28h 01m

Lambert-St Louis

Tue 10/28

5:23 am-8:55 am

1 stop25h 32m

$772

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 10/15

10:55 pm-4:43 pm

1 stop19h 48m

Lambert-St Louis

Tue 10/28

3:59 pm-7:40 am

1 stop13h 41m

$775

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 10/15

9:40 pm-12:35 pm

1 stop16h 55m

Lambert-St Louis

Mon 10/27

5:15 pm-7:40 am

1 stop12h 25m

$775

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 10/14

12:10 am-6:02 pm

2 stops19h 52m

Lambert-St Louis

Tue 10/28

5:15 pm-2:25 pm

2 stops19h 10m

$782

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 11/12

4:35 am-11:40 pm

2 stops22h 05m

Lambert-St Louis

Mon 11/17

5:12 pm-7:40 am

1 stop11h 28m

$784

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 10/10

12:10 am-9:22 am

3 stops35h 12m

$358

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sat 10/11

10:50 pm-4:43 pm

1 stop19h 53m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from Santiago to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Santiago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Santiago to St. Louis, such as Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

Find useful and relevant information for your journey from Santiago to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Santiago to St. Louis?

    A quick flight from Santiago to St. Louis can take about 19h 48m. American Airlines provides one of the quickest options available for as low as $775. The distance between Santiago and St. Louis is about 5137 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Santiago to St. Louis round-trip?

    According to our current data, American Airlines ($782), and Delta ($843) offers the cheapest pricing from Santiago to St. Louis. You may be able to fly from Santiago to St. Louis for 21% less than the average price by searching for these airlines.

  • Can I find deals for flights from Santiago to St. Louis that include hotel bookings?

    Yes. In addition to deals on Santiago to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santiago to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santiago to St. Louis.

  • Can I find deals for business class flights from Santiago to St. Louis?

    Yes. Cheapflights offers flight deals from Santiago to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Santiago to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Santiago to St. Louis (average of $311). Flying from Santiago to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Santiago to St. Louis

Discover the top 2 airlines that operate flights from Santiago to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$782Average$1,076FlexibilityNo cancel feeOn-time71%
DeltaCheapest$843Average$1,065FlexibilityNo cancel feeOn-timeN/A

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