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Cheap flights from St. Louis to Port of Spain from $630

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Port of Spain departing on 10/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Port of Spain

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:35 am - 11:23 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
13h 48m1 stop Houston George Bush Intcntl
United Airlines Logo
12:30 am - 2:10 pmPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
14h 40m1 stop Houston George Bush Intcntl
$630United Airlines
Wed, Oct 7 - Tue, Oct 13
United Airlines Logo
9:04 am - 11:23 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
13h 19m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
United Airlines Logo
12:30 am - 2:17 pmPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
14h 47m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$634United Airlines
Wed, Oct 7 - Tue, Oct 13
American Airlines Logo
5:00 am - 2:06 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
8h 06m1 stop Miami
American Airlines Logo
3:06 pm - 11:59 pmPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
9h 53m1 stop Miami
$655American Airlines
Fri, Oct 2 - Sun, Oct 4
American Airlines Logo
5:00 am - 2:06 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
8h 06m1 stop Miami
American Airlines Logo
3:06 pm - 10:21 amPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
20h 15m2 stops Miami Washington, D.C. Reagan-National
$659American Airlines
Fri, Oct 2 - Sun, Oct 4
United Airlines Logo
10:27 am - 11:23 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
11h 56m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
United Airlines Logo
12:30 am - 3:43 pmPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
16h 13m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$674United Airlines
Fri, Oct 2 - Sat, Oct 3
American Airlines Logo
4:57 pm - 3:25 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
20h 28m2 stops Dallas/Fort Worth Miami
American Airlines Logo
4:47 pm - 12:35 pmPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
21h 48m2 stops Miami Chicago O'Hare Intl
$1,299American Airlines
Thu, Feb 4 - Sun, Feb 14
American Airlines Logo
6:09 pm - 3:25 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
19h 16m1 stop Miami
American Airlines Logo
4:47 pm - 12:35 pmPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
21h 48m2 stops Miami Chicago O'Hare Intl
$1,322American Airlines
Thu, Feb 4 - Sun, Feb 14
American Airlines Logo
4:57 pm - 3:25 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
20h 28m2 stops Dallas/Fort Worth Miami
American Airlines Logo
2:30 pm - 9:19 amPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
20h 49m2 stops Miami Dallas/Fort Worth
$1,379American Airlines
Thu, Feb 4 - Sun, Feb 14
American Airlines Logo
6:09 pm - 3:25 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
19h 16m1 stop Miami
American Airlines Logo
4:47 pm - 12:46 pmPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
21h 59m2 stops Miami Charlotte Douglas
$1,402American Airlines
Thu, Feb 4 - Sun, Feb 14
American Airlines Logo
5:15 am - 3:25 pmSTL  Lambert-St Louis-POS Port of Spain Piarco Intl
8h 10m1 stop Miami
American Airlines Logo
4:47 pm - 10:51 amPOS  Port of Spain Piarco Intl-STL Lambert-St Louis
20h 04m2 stops Miami Chicago O'Hare Intl
$1,409American Airlines
Fri, Feb 5 - Sun, Feb 14

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United Airlines flights from St. Louis to Port of Spain

Our best United Airlines deals on St. Louis to Port of Spain flight tickets
United Airlines
Oct 7
STL6:00 amLambert-St Louis
16h 23m
2 stops
POS11:23 pmPort of Spain Piarco Intl
Oct 13
POS12:30 amPort of Spain Piarco Intl
10h 40m
1 stop
STL10:10 amLambert-St Louis
$630
United Airlines
Oct 7
STL9:04 amLambert-St Louis
13h 19m
2 stops
POS11:23 pmPort of Spain Piarco Intl
Oct 13
POS12:30 amPort of Spain Piarco Intl
14h 47m
2 stops
STL2:17 pmLambert-St Louis
$634
United Airlines
Oct 2
STL10:27 amLambert-St Louis
11h 56m
2 stops
POS11:23 pmPort of Spain Piarco Intl
Oct 3
POS12:30 amPort of Spain Piarco Intl
16h 13m
2 stops
STL3:43 pmLambert-St Louis
$674

American Airlines flights from St. Louis to Port of Spain

Our best American Airlines deals on St. Louis to Port of Spain flight tickets
American Airlines
Oct 2
STL5:00 amLambert-St Louis
8h 06m
1 stop
POS2:06 pmPort of Spain Piarco Intl
Oct 4
POS3:06 pmPort of Spain Piarco Intl
9h 53m
1 stop
STL11:59 pmLambert-St Louis
$655
American Airlines
Oct 2
STL5:00 amLambert-St Louis
8h 06m
1 stop
POS2:06 pmPort of Spain Piarco Intl
Oct 4
POS3:06 pmPort of Spain Piarco Intl
20h 15m
2 stops
STL10:21 amLambert-St Louis
$659
American Airlines
Feb 4
STL5:04 pmLambert-St Louis
20h 21m
2 stops
POS3:25 pmPort of Spain Piarco Intl
Feb 14
POS4:47 pmPort of Spain Piarco Intl
21h 48m
2 stops
STL12:35 pmLambert-St Louis
$1,299

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Port of Spain that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 10, 2026.
Use the filters below to find and compare flights from St. Louis to Port of Spain that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Wed 10/7

8:35 am-11:23 pm

1 stop13h 48m

Port of Spain Piarco Intl

Tue 10/13

12:30 am-2:10 pm

1 stop14h 40m

$630

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Wed 10/7

9:04 am-11:23 pm

2 stops13h 19m

Port of Spain Piarco Intl

Tue 10/13

12:30 am-2:17 pm

2 stops14h 47m

$634
Quickest round-trip

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Fri 10/2

5:00 am-2:06 pm

1 stop8h 06m

Port of Spain Piarco Intl

Sun 10/4

3:06 pm-11:59 pm

1 stop9h 53m

$655

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Fri 10/2

5:00 am-2:06 pm

1 stop8h 06m

Port of Spain Piarco Intl

Sun 10/4

3:06 pm-10:21 am

2 stops20h 15m

$659

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Fri 10/2

10:27 am-11:23 pm

2 stops11h 56m

Port of Spain Piarco Intl

Sat 10/3

12:30 am-3:43 pm

2 stops16h 13m

$674

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Thu 2/4

4:57 pm-3:25 pm

2 stops20h 28m

Port of Spain Piarco Intl

Sun 2/14

4:47 pm-12:35 pm

2 stops21h 48m

$1,299

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Thu 2/4

6:09 pm-3:25 pm

1 stop19h 16m

Port of Spain Piarco Intl

Sun 2/14

4:47 pm-12:35 pm

2 stops21h 48m

$1,322

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Thu 2/4

4:57 pm-3:25 pm

2 stops20h 28m

Port of Spain Piarco Intl

Sun 2/14

2:30 pm-9:19 am

2 stops20h 49m

$1,379

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Thu 2/4

6:09 pm-3:25 pm

1 stop19h 16m

Port of Spain Piarco Intl

Sun 2/14

4:47 pm-12:46 pm

2 stops21h 59m

$1,402

St. LouisPort of Spain

STL Lambert-St Louis - POS Port of Spain Piarco Intl

STLPOS

Lambert-St Louis

Fri 2/5

5:15 am-3:25 pm

1 stop8h 10m

Port of Spain Piarco Intl

Sun 2/14

4:47 pm-10:51 am

2 stops20h 04m

$1,409

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Port of Spain according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Port of Spain (STL to POS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Port of Spain

Fastest flight time

20h 28m

Direct flights

None
The fastest flight from St. Louis to Port of Spain takes 20h 28m
There are no direct flights from St. Louis to Port of Spain. There are no popular flight routes from St. Louis to Port of Spain.
Search flight deals

Frequently asked questions about flying from St. Louis to Port of Spain

  • How far is Lambert-St Louis to Port of Spain Piarco Intl by plane?

    Port of Spain Piarco Intl is 2617.4 mi away from Lambert-St Louis. A reasonable flight in good conditions will take 20h 28m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Port of Spain Piarco Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Port of Spain Piarco Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lambert-St Louis Airport to Port of Spain Piarco Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Port of Spain Piarco Intl Airport.

  • What documentation or ID do you need to fly to Port of Spain Piarco Intl Airport?

    The travel and health documents you'll need for your trip to Port of Spain Piarco Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Port of Spain Piarco Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from St. Louis to Port of Spain

  • How do I get Price Alerts for flights from St. Louis to Port of Spain?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to St. Louis from Port of Spain. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from St. Louis to Port of Spain with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near Port of Spain?

Book flights to Port of Spain if you plan to visit one of these locations
Piarco

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Port of Spain?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Port of Spain from St. Louis.

Can I find flights from St. Louis to Port of Spain with flexible booking policies on momondo?

Yes. All flights to Port of Spain from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Port of Spain?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Port of Spain.

I’m not ready to book a flight from St. Louis to Port of Spain right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Port of Spain flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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