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$613+ Cheap flights from Port of Spain (POS) to St. Louis (STL)

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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
POS — STL
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Port of Spain to St. Louis

Best flights from Port of Spain to St. Louis
Discover carefully curated flight deals from Port of Spain to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 1/221:30 amPOS - STL
1 stop16h 22mUnited Airlines
Sun 1/2510:07 amSTL - POS
1 stop12h 16mUnited Airlines
Deal found 12/15$613
This American Airlines deal was found by Cheapflights users on 12/15. 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.
Thu 1/154:30 pmPOS - STL
1 stop9h 29mAmerican Airlines
Thu 5/2810:53 amSTL - POS
1 stop9h 32mAmerican Airlines
Deal found 12/15$613

Find flight deals from Port of Spain to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Port of Spain (POS) 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$613
(American Airlines)
Provider with most accurate pricing for Port of Spain Piarco Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Port of Spain Piarco Intl-Lambert-St Louis flights.
Search Deals
From Port of Spain Piarco Intl to Lambert-St Louis
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Port of Spain 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 December 18, 2025.
Use the filters below to find and compare flights from Port of Spain to St. Louis that are best for you.

Fly from

Port of Spain

Fly to

St. Louis

Route

Depart

Return

Price

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Thu 1/22

1:30 am-3:52 pm

1 stop16h 22m

Lambert-St Louis

Sun 1/25

10:07 am-12:23 am

1 stop12h 16m

$613

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Thu 1/15

4:30 pm-11:59 pm

1 stop9h 29m

Lambert-St Louis

Thu 5/28

10:53 am-9:25 pm

1 stop9h 32m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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

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 Port of Spain to St. Louis in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 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 Port of Spain-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Port of Spain-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Port of Spain-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Port of Spain-St. Louis flights, Cheapflights users trust eDreams the most. eDreams 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 Port of Spain-St. Louis 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 Port of Spain to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Port of Spain 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 December 18, 2025.
Read reviews from past customers who have flown United Airlines from Port of Spain to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,091 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability
United Airlines
7.4
Good
9,091 reviews
United Airlines
7.4
Good
9,091 reviews

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

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

    There are many flights that can get you from Port of Spain to St. Louis in 9h 29m. Fly via United Airlines or American Airlines to get the fastest option. Port of Spain and St. Louis are separated by a distance of 2641 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Port of Spain to St. Louis round-trip?

    Our cheapest airline available from Port of Spain to St. Louis is United Airlines. Our recent data shows that you can find tickets from as low as $612 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Port of Spain 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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Top airline flying from Port of Spain to St. Louis

Discover the top airline that operate flights from Port of Spain 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$612Average$648FlexibilityNo cancel feeOn-time69%

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