HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Port of Spain

$368+ Cheap flights from St. Louis (STL) to Port of Spain (POS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — POS
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Port of Spain with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Port of Spain

Cheapest flights from St. Louis to Port of Spain
Explore the most affordable flight options available from St. Louis to Port of Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/214:05 pm
STL
-
POS
1 stop31h 15m
Air Canada
Fri 2/272:20 am
POS
-
STL
1 stop15h 09m
Air Canada
Deal found 2/1$368
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
-
POS
1 stop25h 41m
Multiple Airlines
Tue 3/109:10 am
POS
-
STL
2 stops26h 27m
Multiple Airlines
Deal found 2/1$552
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Tue 3/310:10 am
STL
-
POS
1 stop12h 13m
United Airlines
Mon 3/912:30 am
POS
-
STL
1 stop9h 51m
United Airlines
Deal found 2/1$580
This American Airlines deal was found by Cheapflights users on 2/1. 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 3/34:13 pm
STL
-
POS
2 stops20h 53m
American Airlines
Tue 3/103:10 pm
POS
-
STL
2 stops18h 25m
American Airlines
Deal found 2/1$584
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 3/3110:00 am
STL
-
POS
2 stops12h 23m
United Airlines
Sat 4/412:30 am
POS
-
STL
1 stop9h 55m
United Airlines
Deal found 2/2$600
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Mon 8/247:46 pm
STL
-
POS
2 stops19h 09m
American Airlines
Mon 8/317:00 am
POS
-
STL
1 stop17h 59m
American Airlines
Deal found 1/31$604
This Air Canada deal was found by Cheapflights users on 2/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:05 pm
STL
-
POS
1 stop31h 15m
Air Canada
Thu 3/261:20 am
POS
-
STL
1 stop15h 09m
Air Canada
Deal found 2/1$688
This American Airlines deal was found by Cheapflights users on 2/2. 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 3/316:20 pm
STL
-
POS
1 stop18h 50m
American Airlines
Sun 4/53:10 pm
POS
-
STL
1 stop20h 22m
American Airlines
Deal found 2/2$708
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/236:00 am
STL
-
POS
1 stop16h 23m
United Airlines
Thu 3/2612:30 am
POS
-
STL
2 stops23h 29m
United Airlines
Deal found 2/1$754

Find flight deals from St. Louis to Port of Spain

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Port of Spain (POS). 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 February 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$368
(FlightHub)
Provider with most accurate pricing for Lambert-St Louis-Port of Spain Piarco Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Port of Spain Piarco Intl flights.
Search Deals
From Lambert-St Louis to Port of Spain Piarco Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Port of Spain 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 February 2, 2026.
Use the filters below to find and compare flights from St. Louis to Port of Spain that are best for you.

Fly from

St. Louis

Fly to

Port of Spain

Route

Depart

Return

Price

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 2/21

4:05 pm-1:20 am

1 stop31h 15m

Port of Spain Piarco Intl

Fri 2/27

2:20 am-3:29 pm

1 stop15h 09m

$368

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 3/3

3:49 pm-7:30 pm

1 stop25h 41m

Port of Spain Piarco Intl

Tue 3/10

9:10 am-10:37 am

2 stops26h 27m

$552

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 3/3

10:10 am-12:23 am

1 stop12h 13m

Port of Spain Piarco Intl

Mon 3/9

12:30 am-9:21 am

1 stop9h 51m

$580

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 3/3

4:13 pm-3:06 pm

2 stops20h 53m

Port of Spain Piarco Intl

Tue 3/10

3:10 pm-8:35 am

2 stops18h 25m

$584

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 3/31

10:10 am-11:23 pm

1 stop12h 13m

Port of Spain Piarco Intl

Sat 4/4

12:30 am-9:25 am

1 stop9h 55m

$600

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Mon 3/23

4:05 pm-12:20 am

1 stop31h 15m

Port of Spain Piarco Intl

Thu 3/26

1:20 am-3:29 pm

1 stop15h 09m

$688

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 3/31

6:20 pm-2:10 pm

1 stop18h 50m

Port of Spain Piarco Intl

Sun 4/5

3:10 pm-10:32 am

1 stop20h 22m

$708

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sun 3/15

7:41 am-11:23 pm

2 stops38h 42m

$403

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Compare providers for flights from St. Louis to Port of Spain

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 Port of Spain in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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-Port of Spain flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Port of Spain flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Port of Spain flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Port of Spain 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-Port of Spain 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 Port of Spain

Have a flexible travel schedule? Discover the best time to fly to Port of Spain 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.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Port of Spain. 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 Port of Spain?

    Airlines like Air Canada, United Airlines, and American Airlines fly from St. Louis to Port of Spain in about 12h 13m. The time it takes to get you to your destination can typically vary by up to 19h 02m. St. Louis and Port of Spain are separated by a distance of 2641 mi. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from St. Louis to Port of Spain?

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

  • Can I find deals for business class flights from St. Louis to Port of Spain?

    Yes. Cheapflights offers flight deals from St. Louis to Port of Spain 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Port of Spain

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Port of Spain flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.