POS - STL

$310 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 8/31. 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
$692
United Airlines
Wed 5/20Thu 5/28
POS - STL • 1 stop
Cheapest one-way
$310
Multiple Airlines
Mon 8/31
POS - STL • 2 stops
Top airlines
Cheapest • from $692 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Port of Spain and St. Louis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $698 (round-trip)
Shortest trip • 10h 09m (one-way)
Insights
Insights
Insights
Insights
Start a new search
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

Wed, May 20 - Thu, May 28
United Airlines Logo
12:30 am - 10:07 am
POS
-
STL
10h 37m
1 stop
United Airlines Logo
6:30 pm - 11:23 pm
STL
-
POS
27h 53m
1 stop
$692United Airlines
Wed, May 27 - Wed, Jun 10
American Airlines Logo
7:00 am - 7:00 pm
POS
-
STL
13h 00m
2 stops
American Airlines Logo
5:15 am - 11:01 pm
STL
-
POS
16h 46m
1 stop
$697American Airlines
Wed, May 27 - Wed, Jun 10
American Airlines Logo
7:00 am - 10:58 pm
POS
-
STL
16h 58m
1 stop
American Airlines Logo
5:15 am - 11:01 pm
STL
-
POS
16h 46m
1 stop
$715American Airlines
Wed, May 27 - Wed, Jun 10
American Airlines Logo
7:00 am - 7:00 pm
POS
-
STL
13h 00m
2 stops
American Airlines Logo
11:15 am - 11:01 pm
STL
-
POS
10h 46m
1 stop
$719American Airlines
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.

Which airlines provide the cheapest flights from Port of Spain to St. Louis?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Port of Spain to St. Louis were found on United Airlines ($692) and American Airlines ($697).

Good to know

Cheapest flight$310
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 $310 for a one-way ticket and $692 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 9554 reviews
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
7.3Comfort
Airline reviews

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

4.0 OkayAllison, Apr 2026
DCA - ORD
Read more United Airlines reviews

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

The crew was generally professional. Though one of the crew members seemed to be easily annoyed, the others were fine and helpful. The green olives and almonds snack was really good. A great idea, and nice balance of tastes.

It as confusing with the connections and I almost missed my next flight because of the first delay with the first flight. United could have helped passengers go through immigration quicker rather than waiting with everyone else. The flight attendants were super friendly and lovely. The vegetarian food was awful- I did not finish. I would suggest they just do pasta next time

Flights were on time actually early service was good and crew cheerful

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

I had a terrible experience. My flight got delayed from Atlanta to Chicago on Monday April 6, 2026, and that led to me missing my next flight to Brussels. United Airlines didn’t provide me with any accommodation for shelter. I had to sleep at the airport in Chicago. The next flight I was put on didn’t leave until the evening hours of Tuesday 4/7/2026.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Food and drink service was very low quality. The flight attendants in business class must have been short some staff. Service was sluggish and not much English was spoken

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

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

Information on your arrival and departure airports