POS - STL

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Everything you should know

Nonstop flights
Not available
There are currently no direct flights between Port of Spain and St. Louis. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $637 (round-trip)
Shortest trip • 10h 06m (one-way)
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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

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POS
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STL
2641 mimulti-stop
Multiple Airlines Logo
STL
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POS
2641 mimulti-stop
Multiple 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.

What is the most popular layover airport when flying from Port of Spain to St. Louis?

Percentage of 1-stop round-trip flights from Port of Spain to St. Louis chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Houston (IAH) is the top choice – 65% of KAYAK users who clicked on 1-stop flights from Port of Spain to St. Louis picked an itinerary connecting there.

What is the cheapest layover airport when flying from Port of Spain to St. Louis?

Average round-trip price for 1-stop flights from Port of Spain to St. Louis clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Toronto (YYZ) offer the most affordable fares, with an average round-trip price of $637.

Which layover airport offers the shortest total travel time from Port of Spain to St. Louis?

Shortest average total travel time for 1-stop one-way flights from Port of Spain to St. Louis via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Newark (EWR) for the shortest journey. The average one-way travel time for flights connecting there is 10h 06m.

Which layover airport has the quickest connection when flying from Port of Spain to St. Louis?

Average layover duration at different layover airports for 1-stop one-way flights from Port of Spain to St. Louis, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Newark (EWR) often has the shortest layovers from Port of Spain to St. Louis, with an average of 2h 52m.

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

  • 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?

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

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

    The two airlines most popular with KAYAK users for flights from Port of Spain to St. Louis are United Airlines and American Airlines. With an average price for the route of $747 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 $739 and an overall rating of 7.1.

  • 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 airlines 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 9955 reviews
7.3Comfort
7.7Boarding
6.7Food
8.1Crew
7.1Entertainment
Airline reviews

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

2.0 MediocreDavid, Jul 2026
CLE - IAD
Read more United Airlines reviews

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

UA594 was delayed multiple times. I ended up getting picked up so I can make it in time for work 6AM on Monday, 7/6/2026

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airport terminal was outdated, flight was on a small jet with no wifi

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We boarded and buckled and then deplaned due to no pilot. Had to wait over 3 hours for a new pilot. Not weather related, just poor management.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Improvements in communication and empathy are absolutely necessary for American Airlines staff (top down). It’s like they are numb to the needs of their customers.

I like the speed of boarding and deplaning and the fact that everything was on time. The crew (attendants) were probably quite new and did not begin the in cabin service until 30 min before landing even though there was little to no air turbulence for the last 1.5 hours of the flight. It made for a mad scramble at the end to get trash collected and carts stowed before touch down.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

I did like the employee's, they are very friendly and all smiled most of the time, Overall, from checking in bags to getting on plane, not enough employees to be able to get all on the plane, therefore I was not able to get on the plane, due to no one wea there for me to check in my bag, so I decided to go thru the security point and by the time they were done with my bags, I was told that my bag cannot be checked in, and then found out that the lady that does the check in was boarding the customers onto the plane, she said that she was going back and fourth, there for was not able to get on the plane, which changed all my flights by the time I got to Dallas, I was on standby 3 times, and wasn't sure about being able to get on the fourth plane, so ended up buying another plane ticket, so I could make my destination on time.

Not sure about entertainment as I didn't use any, so maybe there should be an NA option on this survey. Otherwise everything was just as it should be. Of course I wish planes were more comfortable and had seats that would tilt back further.

American Airlines “Randy” questioned why I needed preboarding and denied my request for same. Then Randy attempted to berate me when I boarded with my group. I was seated in an exit roll with a young man with a disability that exhibited difficulty controlling and settling himself. But Tandy questioned my disability. The flight was horrible. It was overpacked.

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

Information on your arrival and departure airports