POS - STL

$344 Find Cheap Flights from Port of Spain to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Port of Spain to St. Louis departing on 12/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Port of Spain to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Port of Spain to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$471
Air Canada
Thu 5/7Tue 5/12
POS - STL • 2 stops
Cheapest one-way
$316
Multiple Airlines
Sun 12/28
POS - STL • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Port of Spain to St. Louis (POS-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Port of Spain to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Port of Spain to St. Louis

Thu, May 7 - Tue, May 12
Air Canada Logo
2:35 am - 6:25 pmPOS-STL
40h 50m2 stops
Air Canada Logo
9:10 am - 1:35 amSTL-POS
15h 25m1 stop
$471Air Canada
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Thu, Jan 15 - Thu, May 28
American Airlines Logo
6:30 am - 5:22 pmPOS-STL
12h 52m1 stop
American Airlines Logo
5:25 am - 9:25 pmSTL-POS
15h 00m1 stop
$612American Airlines
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Wed, Dec 31 - Wed, Jan 7
United Airlines Logo
1:30 am - 5:54 pmPOS-STL
18h 24m2 stops
United Airlines Logo
6:30 am - 12:23 amSTL-POS
15h 53m2 stops
$615United Airlines
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Thu, Jan 15 - Thu, May 28
American Airlines Logo
4:30 pm - 11:59 pmPOS-STL
9h 29m1 stop
American Airlines Logo
7:42 am - 9:25 pmSTL-POS
12h 43m2 stops
$617American Airlines
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Thu, Jan 1 - Wed, Jan 7
American Airlines Logo
6:02 am - 5:51 pmPOS-STL
13h 49m1 stop
American Airlines Logo
10:00 am - 10:48 pmSTL-POS
10h 48m1 stop
$719American Airlines
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Thu, Jan 1 - Wed, Jan 7
American Airlines Logo
6:02 am - 5:51 pmPOS-STL
13h 49m1 stop
American Airlines Logo
6:00 am - 10:48 pmSTL-POS
14h 48m2 stops
$724American Airlines
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Fri, May 8 - Tue, May 12
American Airlines Logo
3:10 pm - 9:16 amPOS-STL
19h 06m1 stop
American Airlines Logo
5:35 am - 2:00 pmSTL-POS
7h 25m1 stop
$736American Airlines
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Fri, May 8 - Tue, May 12
American Airlines Logo
3:10 pm - 9:16 amPOS-STL
19h 06m1 stop
American Airlines Logo
7:34 am - 2:00 pmSTL-POS
29h 26m2 stops
$741American Airlines
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Thu, Jan 1 - Wed, Jan 7
American Airlines Logo
6:02 am - 5:10 pmPOS-STL
13h 08m2 stops
American Airlines Logo
9:33 am - 10:48 pmSTL-POS
11h 15m2 stops
$774American Airlines
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Thu, May 7 - Tue, May 12
United Airlines Logo
12:30 am - 3:21 pmPOS-STL
15h 51m2 stops
United Airlines Logo
8:00 am - 11:23 pmSTL-POS
14h 23m2 stops
$1,172United Airlines
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Booking Insights

KAYAK's insights & trends for Port of Spain to St. Louis flights

Get data-powered insights and trends into flights from Port of Spain to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Port of Spain to St. Louis?

The average price of all round-trip flights from Port of Spain to St. Louis clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to St. Louis on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Port of Spain to St. Louis. For your return ticket, we recommend flying on a Monday and avoiding Fridays for the best deals.

Find deals

Good to know

Cheapest flight$316
Flight from Port of Spain to St. Louis

When to book flights from Port of Spain to St. Louis

Are your dates flexible? Find out the best times to travel from Port of Spain to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Port of Spain to St. Louis

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

    In the last 3 days, the lowest price for a flight from Port of Spain to St. Louis was $316 for a one-way ticket and $471 for a round-trip.

  • Do I need a passport to fly between Port of Spain and St. Louis?

    Yes

  • Which aircraft models fly most regularly from Port of Spain to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Port of Spain to St. Louis?

    Star Alliance is the only airline alliance operating flights between Port of Spain and St. Louis.

  • How does KAYAK find such low prices on flights from Port of Spain to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Port of Spain to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Port of Spain to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Port of Spain is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Port of Spain to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Port of Spain with another airline. Booking your flights between Port of Spain and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Port of Spain to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Port of Spain up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Port of Spain to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Port of Spain to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Port of Spain to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9065 reviews
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

8.0 Excellentt, Dec 2025ORD - RSW
Read more United Airlines reviews

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

We boarded late. The crew at the airport was dismissive. The seat cushion on the plane was uncomfortable.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

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

Information on your arrival and departure airports

Port of Spain (POS)
St. Louis (STL)