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$611+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
POS — STL
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
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Find flight deals from Port of Spain to St. Louis

Cheapest flights from Port of Spain to St. Louis
Explore the most affordable flight options available from Port of Spain to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2025.

This United Airlines deal was found by Cheapflights users on 11/4. 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 12/11:30 amPOS - STL
1 stop10h 34mUnited Airlines
Tue 12/94:45 pmSTL - POS
1 stop29h 38mUnited Airlines
Deal found 11/4$611
This United Airlines deal was found by Cheapflights users on 11/3. 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 12/21:30 amPOS - STL
2 stops23h 15mUnited Airlines
Wed 12/105:27 pmSTL - POS
2 stops28h 56mUnited Airlines
Deal found 11/3$612
This American Airlines deal was found by Cheapflights users on 11/4. 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 12/27:19 amPOS - STL
1 stop12h 30mAmerican Airlines
Tue 12/95:10 amSTL - POS
1 stop16h 49mAmerican Airlines
Deal found 11/4$613
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 12/51:30 amPOS - STL
2 stops23h 15mUnited Airlines
Sun 12/146:15 amSTL - POS
1 stop16h 08mUnited Airlines
Deal found 11/5$634
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Wed 12/171:30 amPOS - STL
1 stop10h 19mUnited Airlines
Sun 12/286:00 amSTL - POS
1 stop16h 23mUnited Airlines
Deal found 11/5$735
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 12/64:33 pmPOS - STL
2 stops18h 08mAmerican Airlines
Sun 12/146:00 amSTL - POS
2 stops15h 59mAmerican Airlines
Deal found 11/5$746
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/211:30 amPOS - STL
2 stops23h 13mUnited Airlines
Mon 12/296:35 pmSTL - POS
2 stops28h 30mUnited Airlines
Deal found 11/5$765
This American Airlines deal was found by Cheapflights users on 11/5. 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 12/186:02 amPOS - STL
1 stop13h 49mAmerican Airlines
Sun 12/286:35 pmSTL - POS
2 stops19h 11mAmerican Airlines
Deal found 11/5$772

Cheap 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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$611
(United 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
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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 November 5, 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

Tue 12/2

1:30 am-10:45 pm

2 stops23h 15m

Lambert-St Louis

Wed 12/10

5:27 pm-12:23 am

2 stops28h 56m

$612

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Tue 12/2

7:19 am-10:59 pm

2 stops17h 40m

Lambert-St Louis

Tue 12/9

5:10 am-11:59 pm

1 stop16h 49m

$617

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Thu 1/15

6:30 am-9:51 pm

2 stops17h 21m

Lambert-St Louis

Thu 5/28

5:25 am-9:25 pm

1 stop15h 00m

$617

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Fri 12/5

1:30 am-12:15 pm

2 stops36h 45m

Lambert-St Louis

Sun 12/14

6:30 am-12:23 am

2 stops15h 53m

$634

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Sat 2/28

1:30 am-9:23 am

1 stop9h 53m

Lambert-St Louis

Tue 3/3

6:00 am-12:23 am

1 stop16h 23m

$637

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

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 November.
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.

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 17h 40m. 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.

  • 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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Fairview Heights
Maryland Heights
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Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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