POS - STL

$625 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 6/7. 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
$625
Air Canada
Sun 6/7Fri 6/12
POS - STL • 1 stop
Top airlines
Air Canada
Cheapest • from $625 (round-trip)
United Airlines
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
Toronto (YYZ)
Cheapest • Avg $637 (round-trip)
Newark (EWR)
Shortest trip • 10h 06m (one-way)
Insights
Insights
Insights
Insights
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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

Sun, Jun 7 - Fri, Jun 12
Air Canada Logo
1:25 am - 12:16 pm
POS
-
STL
11h 51m
1 stop
Air Canada Logo
2:15 pm - 12:15 am
STL
-
POS
9h 00m
1 stop
$625Air Canada
Sun, Jun 7 - Fri, Jun 12
Air Canada Logo
1:25 am - 8:25 pm
POS
-
STL
20h 00m
2 stops
Air Canada Logo
2:15 pm - 12:15 am
STL
-
POS
9h 00m
1 stop
$646Air Canada
Mon, Aug 24 - Mon, Aug 31
Air Canada Logo
1:25 am - 8:07 pm
POS
-
STL
19h 42m
1 stop
Air Canada Logo
8:55 am - 12:15 am
STL
-
POS
14h 20m
1 stop
$676Air Canada
Mon, Aug 24 - Mon, Aug 31
Air Canada Logo
1:25 am - 6:42 pm
POS
-
STL
18h 17m
2 stops
Air Canada Logo
8:55 am - 12:15 am
STL
-
POS
14h 20m
1 stop
$680Air Canada
Wed, Jul 1 - Sun, Jul 19
United Airlines Logo
12:30 am - 7:23 pm
POS
-
STL
19h 53m
2 stops
United Airlines Logo
8:35 pm - 11:23 pm
STL
-
POS
25h 48m
2 stops
$690United Airlines
Tue, May 26 - Wed, Jun 10
United Airlines Logo
12:30 am - 2:16 pm
POS
-
STL
14h 46m
1 stop
United Airlines Logo
8:35 am - 11:23 pm
STL
-
POS
13h 48m
1 stop
$692United Airlines
Tue, May 26 - Wed, Jun 10
United Airlines Logo
12:30 am - 3:46 pm
POS
-
STL
16h 16m
2 stops
United Airlines Logo
6:00 am - 11:23 pm
STL
-
POS
16h 23m
2 stops
$697United Airlines
Wed, Jul 1 - Sun, Jul 19
Air Canada Logo
1:25 am - 2:02 pm
POS
-
STL
13h 37m
1 stop
Air Canada Logo
8:55 am - 12:15 am
STL
-
POS
14h 20m
1 stop
$727Air Canada
Wed, Aug 12 - Wed, Sep 2
American Airlines Logo
7:00 am - 10:40 pm
POS
-
STL
16h 40m
1 stop
American Airlines Logo
5:00 am - 11:18 pm
STL
-
POS
17h 18m
1 stop
$737American Airlines
Tue, Aug 18 - Sun, Sep 6
United Airlines Logo
12:30 am - 12:49 pm
POS
-
STL
13h 19m
2 stops
United Airlines Logo
9:16 am - 11:23 pm
STL
-
POS
13h 07m
2 stops
$774United 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 Air Canada ($625) and United Airlines ($690).

Find deals

Good to know

Cheapest flight$394
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 $625 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 9672 reviews
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

4.0 OkayMichael, Apr 2026
SNA - DEN
Read more United Airlines reviews

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Outstanding service, great food, friendly & efficient crew, safe & comfortable flight

Staff were not attentive, wifi did not work, cut my head in the bathroom due to the position of the soap on the sink, had blood running down my face, told staff, they had no expression no sympathy, didn't even say "sorry", they said "oh we will have a look at that" about 10 mins later the purser brought me a bandaid, still no sorry.... Shocking

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

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)