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Port of Spain

$617+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — POS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$558
(Kiwi.com)
From Lambert-St Louis to Port of Spain Piarco Intl
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Find 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/129:15 amSTL - POS
1 stop15h 05mMultiple Airlines
Fri 10/177:55 amPOS - STL
2 stops35h 15mMultiple Airlines
Deal found 9/13$617
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/126:15 amSTL - POS
1 stop16h 08mUnited Airlines
Thu 10/1612:30 amPOS - STL
1 stop10h 22mUnited Airlines
Deal found 9/13$678
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Sun 10/126:08 pmSTL - POS
1 stop26h 12mAmerican Airlines
Fri 10/173:25 pmPOS - STL
1 stop9h 31mAmerican Airlines
Deal found 9/13$702
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/288:20 amSTL - POS
1 stop14h 03mUnited Airlines
Thu 10/3012:30 amPOS - STL
1 stop16h 20mUnited Airlines
Deal found 9/14$788
This United Airlines deal was found by Cheapflights users on 9/13. 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 9/238:10 amSTL - POS
2 stops14h 13mUnited Airlines
Fri 9/2612:30 amPOS - STL
1 stop16h 58mUnited Airlines
Deal found 9/13$828
This American Airlines deal was found by Cheapflights users on 9/13. 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 9/232:11 pmSTL - POS
2 stops23h 05mAmerican Airlines
Sat 9/273:25 pmPOS - STL
2 stops21h 32mAmerican Airlines
Deal found 9/13$907

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 September 15, 2025.
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

Sun 10/12

9:15 am-1:20 am

1 stop15h 05m

Port of Spain Piarco Intl

Fri 10/17

7:55 am-6:10 pm

2 stops35h 15m

$617

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sun 10/12

6:15 am-11:23 pm

1 stop16h 08m

Port of Spain Piarco Intl

Thu 10/16

12:30 am-9:52 am

1 stop10h 22m

$678

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sun 10/12

6:08 pm-9:20 pm

1 stop26h 12m

Port of Spain Piarco Intl

Fri 10/17

3:25 pm-11:56 pm

1 stop9h 31m

$702

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 10/28

8:20 am-11:23 pm

1 stop14h 03m

Port of Spain Piarco Intl

Thu 10/30

12:30 am-3:50 pm

1 stop16h 20m

$788

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 10/28

9:43 am-9:20 pm

2 stops10h 37m

Port of Spain Piarco Intl

Fri 10/31

3:25 pm-11:56 pm

1 stop9h 31m

$793

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 9/23

8:10 am-11:23 pm

2 stops14h 13m

Port of Spain Piarco Intl

Fri 9/26

12:30 am-4:28 pm

1 stop16h 58m

$828

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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.

Reviews of airlines servicing Port of Spain

Get insights into the airlines that provide service to Port of Spain. 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 Port of Spain. Reviews last updated September 15, 2025.
Read through reviews of airlines operating flights from St. Louis to Port of Spain, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 United Airlines fly from St. Louis to Port of Spain in about 16h 08m. The time it takes to get you to your destination can typically vary by up to . St. Louis and Port of Spain are separated by a distance of 2641 mi.

  • What are the cheapest airlines flying from St. Louis to Port of Spain round-trip?

    Our cheapest airline available from St. Louis to Port of Spain is United Airlines. Our recent data shows that you can find tickets from as low as $545 on this airline. An additional option worth looking into is American Airlines, starting at $558.

  • 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.

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

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Port of Spain (average of $435). Flying from St. Louis to Port of Spain in December is currently the most expensive (average of $710). 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

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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

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

Discover the top 2 airlines that operate flights from St. Louis to Port of Spain. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$545Average$886FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$558Average$606FlexibilityNo cancel feeOn-time71%

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