POS - STL

$659 Find Cheap Flights from Port of Spain to St. Louis

This is the cheapest round-trip 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 6/2. 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
$659
Multiple Airlines
Tue 6/2Tue 6/16
POS - STL • 2 stops
Top airlines
Cheapest • from $691 (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 $637 (round-trip)
Shortest trip • 10h 06m (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

Tue, Jun 2 - Tue, Jun 16
Multiple Airlines Logo
9:10 am - 8:55 am
POS
-
STL
24h 45m
2 stops
Multiple Airlines Logo
4:17 pm - 7:30 pm
STL
-
POS
26h 13m
1 stop
$659Multiple Airlines
Wed, May 27 - Thu, Jun 11
United Airlines Logo
12:30 am - 3:46 pm
POS
-
STL
40h 16m
2 stops
United Airlines Logo
8:35 am - 11:23 pm
STL
-
POS
13h 48m
1 stop
$691United Airlines
Tue, May 26 - Wed, Jun 10
United Airlines Logo
12:30 am - 10:07 am
POS
-
STL
10h 37m
1 stop
United Airlines Logo
6:14 am - 11:23 pm
STL
-
POS
16h 09m
1 stop
$692United Airlines
Wed, Sep 2 - Thu, Sep 10
United Airlines Logo
12:30 am - 3:38 pm
POS
-
STL
16h 08m
2 stops
United Airlines Logo
6:14 am - 11:23 pm
STL
-
POS
16h 09m
1 stop
$694United Airlines
Tue, May 26 - Wed, Jun 10
United Airlines Logo
12:30 am - 10:07 am
POS
-
STL
10h 37m
1 stop
United Airlines Logo
5:41 pm - 11:23 pm
STL
-
POS
28h 42m
2 stops
$697United Airlines
Tue, Aug 25 - Mon, Aug 31
American Airlines Logo
7:00 am - 10:40 pm
POS
-
STL
16h 40m
1 stop
American Airlines Logo
11:35 am - 2:13 pm
STL
-
POS
25h 38m
1 stop
$705American Airlines
Thu, Sep 3 - Thu, Sep 10
American Airlines Logo
7:00 am - 11:54 pm
POS
-
STL
17h 54m
2 stops
American Airlines Logo
6:31 pm - 2:00 pm
STL
-
POS
18h 29m
2 stops
$713American Airlines
Mon, Aug 24 - Mon, Aug 31
United Airlines Logo
12:30 am - 2:08 pm
POS
-
STL
14h 38m
1 stop
United Airlines Logo
12:30 pm - 12:50 am
STL
-
POS
11h 20m
1 stop
$737United Airlines
Thu, May 28 - Thu, Jun 11
Multiple Airlines Logo
3:55 pm - 8:25 pm
POS
-
STL
29h 30m
3 stops
Multiple Airlines Logo
1:05 pm - 12:15 am
STL
-
POS
34h 10m
2 stops
$1,098Multiple Airlines
Thu, Sep 3 - Thu, Sep 10
Multiple Airlines Logo
3:55 pm - 6:36 pm
POS
-
STL
27h 41m
3 stops
Multiple Airlines Logo
12:10 pm - 12:15 am
STL
-
POS
35h 05m
2 stops
$1,293Multiple 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 ($691) and American Airlines ($705).

Good to know

Cheapest flight$659
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 $659 for a round-trip ticket.

  • 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 9589 reviews
7.3Comfort
8.1Crew
6.6Food
7.1Entertainment
7.7Boarding
Airline reviews

Lounges are packed and very poor, food is really bad, for business class in an airline is well below expectations

6.0 GoodFabian, Apr 2026
BJX - IAH
Read more United Airlines reviews

Lounges are packed and very poor, food is really bad, for business class in an airline is well below expectations

The international / itallian speakers did not seem as friendly and professional as the others. Drink selections were denied ( a beer) until questioned about lack of ANY beer on the plane and then four options were given.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

It was a more comfortable seat don't get stuck in middle, makes for uncomfortable situation

Business class would have been better , poor quality blanket , services

First time flying with UA and it was a great experience. Thank you

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Meals were poor and service rendered on return flight was mediocre as compared to the flight we took to Germany earlier where the attendants were more attentive, energetic, and mindful of passengers' needs. Thumbs up to crew of UA 58. Thumbs down to UA 59..

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

Information on your arrival and departure airports