STL - POS

$240 Find Cheap Flights from St. Louis to Port of Spain

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Port of Spain departing on 10/12. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Port of Spain

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Port of Spain, 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 St. Louis to Port of Spain, as well as popular online travel agencies
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Cheap Flights from St. Louis to Port of Spain (STL-POS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Port of Spain 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 St. Louis to Port of Spain

Fri, Sep 12 - Sun, Oct 5
American Airlines Logo
6:00 pm - 2:16 pmSTL-POS
19h 16m2 stops
American Airlines Logo
3:23 pm - 12:00 pmPOS-STL
21h 37m2 stops
$608American Airlines
Find Deal
Fri, Jul 25 - Fri, Aug 1
 Logo
9:15 am - 1:20 amSTL-POS
15h 05m1 stop
 Logo
11:10 am - 9:40 amPOS-STL
23h 30m2 stops
Fri, Sep 12 - Sun, Oct 5
American Airlines Logo
5:28 am - 2:16 pmSTL-POS
7h 48m1 stop
American Airlines Logo
3:23 pm - 11:59 pmPOS-STL
9h 36m1 stop
$688American Airlines
Find Deal
Fri, Sep 12 - Sat, Oct 4
United Airlines Logo
5:30 pm - 11:23 pmSTL-POS
28h 53m2 stops
United Airlines Logo
12:30 am - 2:27 pmPOS-STL
14h 57m2 stops
$703United Airlines
Find Deal
Fri, Jul 25 - Fri, Aug 1
 Logo
9:15 am - 1:20 amSTL-POS
15h 05m1 stop
 Logo
11:10 am - 2:39 pmPOS-STL
28h 29m3 stops
Fri, Jul 25 - Thu, Jul 31
United Airlines Logo
6:15 am - 11:23 pmSTL-POS
16h 08m1 stop
United Airlines Logo
12:30 am - 9:28 amPOS-STL
9h 58m1 stop
$813United Airlines
Find Deal
Fri, Jul 25 - Thu, Jul 31
United Airlines Logo
6:33 am - 11:23 pmSTL-POS
15h 50m2 stops
United Airlines Logo
12:30 am - 9:28 amPOS-STL
9h 58m1 stop
$818United Airlines
Find Deal
Fri, Jul 25 - Thu, Jul 31
United Airlines Logo
8:00 am - 11:23 pmSTL-POS
14h 23m2 stops
United Airlines Logo
12:30 am - 2:37 pmPOS-STL
39h 07m2 stops
$838United Airlines
Find Deal
Fri, Jul 25 - Fri, Aug 1
 Logo
9:15 am - 1:20 amSTL-POS
15h 05m1 stop
 Logo
10:10 am - 2:39 pmPOS-STL
29h 29m1 stop
Fri, Sep 12 - Sat, Oct 4
United Airlines Logo
8:20 am - 11:23 pmSTL-POS
14h 03m1 stop
United Airlines Logo
12:30 am - 4:28 pmPOS-STL
16h 58m1 stop
$2,249United Airlines
Find Deal
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KAYAK's insights & trends for St. Louis to Port of Spain flights

Get data-powered insights and trends into flights from St. Louis to Port of Spain 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 St. Louis to Port of Spain?

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

For St. Louis to Port of Spain, Monday is the cheapest day to fly on average and Friday is the most expensive. Flying from Port of Spain back to St. Louis, the best deals are generally found on Thursday, with Friday being the most expensive.

Good to know

Cheapest flight$240
Flight from St. Louis to Port of Spain

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

Are your dates flexible? Find out the best times to travel from St. Louis to Port of Spain 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 St. Louis to Port of Spain

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

    In the last 3 days, the lowest price for a flight from St. Louis to Port of Spain was $240 for a one-way ticket and $608 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Port of Spain.

  • Which airports will I be using when flying from St. Louis to Port of Spain?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Port of Spain, also known as Port of Spain Piarco Intl.

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

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

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

    Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Port of Spain, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Port of Spain, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Port of Spain are United Airlines and American Airlines. With an average price for the route of $886 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $766 and an overall rating of 7.2.

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

    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 St. Louis to Port of Spain.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Port of Spain from St. Louis 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 St. Louis to Port of Spain?

    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 Port of Spain with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and POS 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 St. Louis to Port of Spain?

    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 Port of Spain from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from St. Louis to Port of Spain

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Port of Spain. 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 St. Louis to Port of Spain? 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 8790 reviews
6.6Food
7.7Boarding
7.0Entertainment
7.3Comfort
8.1Crew
Airline reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

2.0 MediocreAnonymous, Jun 2025LAX - SEA
Read more United Airlines reviews

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

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

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