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St. Louis

$609+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
POS — STL
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$609
(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.
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From Port of Spain Piarco Intl to Lambert-St Louis
Search Deals

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 April 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/17. 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 5/1412:30 amPOS - STL
2 stops36h 49mUnited Airlines
Mon 6/26:30 amSTL - POS
2 stops15h 53mUnited Airlines
Deal found 4/17$609
This American Airlines deal was found by Cheapflights users on 4/16. 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 7/103:00 pmPOS - STL
1 stop10h 29mAmerican Airlines
Mon 7/145:26 amSTL - POS
2 stops15h 19mAmerican Airlines
Deal found 4/16$617
This Booking.com deal was found by Cheapflights users on 4/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/108:30 amPOS - STL
3 stops31h 46mMultiple Airlines
Mon 7/1410:00 amSTL - POS
2 stops14h 25mMultiple Airlines
Deal found 4/16$1,544

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 April 17, 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

Wed 5/14

12:30 am-12:19 pm

2 stops36h 49m

Lambert-St Louis

Mon 6/2

6:30 am-11:23 pm

2 stops15h 53m

$609

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Thu 7/10

3:00 pm-12:29 am

1 stop10h 29m

Lambert-St Louis

Mon 7/14

5:26 am-9:45 pm

2 stops15h 19m

$617

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

Thu 7/10

8:30 am-3:16 pm

3 stops31h 46m

Lambert-St Louis

Mon 7/14

10:00 am-1:25 am

2 stops14h 25m

$1,544

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

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 April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice 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 Port of Spain-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Port of Spain-St. Louis flight deals on Cheapflights vs. FlightHub >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.

Cheapflights Insights

Everything you need to know about your flight from Port of Spain to St. Louis

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 April 17, 2025.
United Airlines
7.4
Good
8,667 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,667 reviews
United Airlines
7.4
Good
8,667 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,667 reviews

Entertainment

7.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

  • What are the cheapest airlines flying 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 $609 on this airline. An additional option worth looking into is American Airlines, starting at $617.

  • 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.

  • What is the cheapest month to book a flight from Port of Spain to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Port of Spain to St. Louis (average of $311). Flying from Port of Spain 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 Port of Spain?

Book flights to Port of Spain if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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Top 2 airlines flying from Port of Spain to St. Louis

Discover the top 2 airlines 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$556Average$698FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$556Average$616FlexibilityNo cancel feeOn-time69%

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