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Santiago de los Caballeros

$446+ Cheap flights from St. Louis (STL) to Santiago de los Caballeros (STI)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — STI
Sep 9 — Sep 161
Wed 9/9
Wed 9/16
1 adult, Economy
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Cheap flight deals from St. Louis to Santiago de los Caballeros

Cheapest flights from St. Louis to Santiago de los Caballeros
Explore the most affordable flight options available from St. Louis to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.

This American Airlines deal was found by Cheapflights users on 8/7. 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.
Tue 9/15:00 am -
1 stop14h 03m
Mon 9/77:00 am -
1 stop16h 40m
Deal found 8/7$715
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Mon 11/26:00 am -
1 stop15h 51m
Thu 11/56:00 am -
1 stop12h 17m
Deal found 8/6$774

Find flight deals from St. Louis to Santiago de los Caballeros

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Santiago de los Caballeros (STI). 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 August 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$715
(American Airlines)

One-way from

$446
(American Airlines)
Provider with most accurate pricing for Lambert-St Louis-Santiago de los Caballeros flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Santiago de los Caballeros flights.
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From Lambert-St Louis to Santiago de los Caballeros
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One-way flight from Lambert-St Louis to Santiago de los Caballeros
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Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Santiago de los Caballeros 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 August 10, 2026.
Use the filters below to find and compare flights from St. Louis to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSantiago de los Caballeros

STL Lambert-St Louis - STI Santiago de los Caballeros

STLSTI

Lambert-St Louis

Tue 9/1

5:00 am-8:03 pm

1 stop14h 03m

Santiago de los Caballeros

Mon 9/7

7:00 am-10:40 pm

1 stop16h 40m

$715

St. LouisSantiago de los Caballeros

STL Lambert-St Louis - STI Santiago de los Caballeros

STLSTI

Lambert-St Louis

Mon 11/2

5:00 pm-11:49 am

1 stop16h 49m

Santiago de los Caballeros

Thu 11/5

12:55 pm-9:52 pm

1 stop10h 57m

$774
Quickest round-trip

St. LouisSantiago de los Caballeros

STL Lambert-St Louis - STI Santiago de los Caballeros

STLSTI

Lambert-St Louis

Mon 10/19

7:30 am-10:52 pm

1 stop14h 22m

Santiago de los Caballeros

Wed 10/21

2:07 pm-9:25 pm

1 stop8h 18m

$774
Cheapest one-way

St. LouisSantiago de los Caballeros

STL Lambert-St Louis - STI Santiago de los Caballeros

STLSTI

Lambert-St Louis

Fri 9/4

6:00 am-9:07 pm

2 stops14h 07m

$446
Quickest one-way

St. LouisSantiago de los Caballeros

STL Lambert-St Louis - STI Santiago de los Caballeros

STLSTI

Lambert-St Louis

Fri 9/4

8:00 am-10:52 pm

3 stops13h 52m

$1,977

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Sorted by cheapest first

Compare providers for flights from St. Louis to Santiago de los Caballeros

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Santiago de los Caballeros in August.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Santiago de los Caballeros flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Santiago de los Caballeros flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Santiago de los Caballeros flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Santiago de los Caballeros flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Santiago de los Caballeros flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from St. Louis 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 Santiago de los Caballeros

Get insights into the airlines that provide service to Santiago de los Caballeros. 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 Santiago de los Caballeros. Reviews last updated August 10, 2026.
Get a feel of what it's like to fly with United Airlines and American Airlines from St. Louis to Santiago de los Caballeros by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,095 reviews

Comfort

7.3

Food

6.7

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.4
Good
10,095 reviews
United Airlines
7.4
Good
10,095 reviews

Comfort

7.3

Food

6.7

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
American Airlines
7.1
Good
11,897 reviews
United Airlines
7.4
Good
10,095 reviews

Comfort

7.3

Food

6.7

Entertainment

7.1

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Santiago de los Caballeros. 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 St. Louis to Santiago de los Caballeros?

    A quick flight from St. Louis to Santiago de los Caballeros can take about 14h 03m. American Airlines provides one of the quickest options available for as low as $715. Airlines will cover a distance of 1782 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, United Airlines ($538), and American Airlines ($600) offers the cheapest pricing from St. Louis to Santiago de los Caballeros.

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

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

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

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

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

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

See more FAQs

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Top 2 airlines flying from St. Louis to Santiago de los Caballeros

Discover the top 2 airlines that operate flights from St. Louis to Santiago de los Caballeros. 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 August 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$538Average$636FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$600Average$638FlexibilityNo cancel feeOn-time71%

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