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Cheap flights from St. Louis to Port of Spain from $473

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 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Port of Spain

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:05 pm - 1:20 am
STL
-
POS
31h 15m1 stop
Air Canada Logo
2:20 am - 3:29 pm
POS
-
STL
15h 09m1 stop
$473Air Canada
Sat, Feb 21 - Fri, Feb 27
American Airlines Logo
1:36 pm - 3:39 pm
STL
-
POS
24h 03m2 stops
American Airlines Logo
4:40 pm - 10:26 am
POS
-
STL
19h 46m1 stop
$615American Airlines
Sat, Feb 21 - Sat, Feb 28
American Airlines Logo
1:36 pm - 3:39 pm
STL
-
POS
24h 03m2 stops
American Airlines Logo
4:40 pm - 3:01 pm
POS
-
STL
24h 21m2 stops
$653American Airlines
Sat, Feb 21 - Sat, Feb 28
United Airlines Logo
6:15 am - 11:23 pm
STL
-
POS
16h 08m1 stop
United Airlines Logo
12:30 am - 4:35 pm
POS
-
STL
17h 05m1 stop
$683United Airlines
Sat, Jun 20 - Fri, Jun 26
United Airlines Logo
6:15 am - 11:23 pm
STL
-
POS
16h 08m1 stop
United Airlines Logo
12:30 am - 2:18 pm
POS
-
STL
14h 48m2 stops
$687United Airlines
Sat, Jun 20 - Fri, Jun 26
United Airlines Logo
5:00 am - 11:23 pm
STL
-
POS
17h 23m2 stops
United Airlines Logo
12:30 am - 9:42 am
POS
-
STL
10h 12m1 stop
$699United Airlines
Fri, Jun 19 - Fri, Jun 26
American Airlines Logo
10:53 am - 9:25 pm
STL
-
POS
9h 32m1 stop
American Airlines Logo
3:20 pm - 8:49 am
POS
-
STL
18h 29m2 stops
$718American Airlines
Fri, Jun 19 - Sat, Jun 27
American Airlines Logo
5:25 am - 2:05 pm
STL
-
POS
7h 40m1 stop
American Airlines Logo
3:20 pm - 10:23 am
POS
-
STL
20h 03m1 stop
$730American Airlines
Fri, Jun 19 - Sat, Jun 27
American Airlines Logo
8:06 pm - 2:05 pm
STL
-
POS
16h 59m2 stops
American Airlines Logo
3:20 pm - 8:49 am
POS
-
STL
18h 29m2 stops
$738American Airlines
Sat, Jun 20 - Sat, Jun 27
American Airlines Logo
10:53 am - 9:25 pm
STL
-
POS
9h 32m1 stop
American Airlines Logo
7:55 am - 10:23 am
POS
-
STL
27h 28m1 stop
$750American Airlines
Sat, Jun 20 - Sat, Jun 27

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
Jun 20
STL6:15 amLambert-St Louis
16h 08m
1 stop
POS11:23 pmPort of Spain Piarco Intl
Jun 26
POS12:30 amPort of Spain Piarco Intl
17h 05m
1 stop
STL4:35 pmLambert-St Louis
$683
Find similar
United Airlines
Jun 20
STL6:15 amLambert-St Louis
16h 08m
1 stop
POS11:23 pmPort of Spain Piarco Intl
Jun 26
POS12:30 amPort of Spain Piarco Intl
14h 48m
2 stops
STL2:18 pmLambert-St Louis
$687
Find similar
United Airlines
Jun 19
STL5:00 amLambert-St Louis
17h 23m
2 stops
POS11:23 pmPort of Spain Piarco Intl
Jun 26
POS12:30 amPort of Spain Piarco Intl
10h 12m
1 stop
STL9:42 amLambert-St Louis
$699
Find similar

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
Feb 21
STL1:36 pmLambert-St Louis
24h 03m
2 stops
POS3:39 pmPort of Spain Piarco Intl
Feb 28
POS4:40 pmPort of Spain Piarco Intl
19h 46m
1 stop
STL10:26 amLambert-St Louis
$615
Find similar
American Airlines
Feb 21
STL1:36 pmLambert-St Louis
24h 03m
2 stops
POS3:39 pmPort of Spain Piarco Intl
Feb 28
POS4:40 pmPort of Spain Piarco Intl
24h 21m
2 stops
STL3:01 pmLambert-St Louis
$653
Find similar
American Airlines
Jun 19
STL10:53 amLambert-St Louis
9h 32m
1 stop
POS9:25 pmPort of Spain Piarco Intl
Jun 27
POS3:20 pmPort of Spain Piarco Intl
18h 29m
2 stops
STL8:49 amLambert-St Louis
$718
Find similar

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 December 27, 2025.
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

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 2/21

4:05 pm-1:20 am

1 stop31h 15m

Port of Spain Piarco Intl

Fri 2/27

2:20 am-3:29 pm

1 stop15h 09m

$473

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 2/21

1:36 pm-3:39 pm

2 stops24h 03m

Port of Spain Piarco Intl

Sat 2/28

4:40 pm-10:26 am

1 stop19h 46m

$615

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 2/21

1:36 pm-3:39 pm

2 stops24h 03m

Port of Spain Piarco Intl

Sat 2/28

4:40 pm-3:01 pm

2 stops24h 21m

$653

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 6/20

6:15 am-11:23 pm

1 stop16h 08m

Port of Spain Piarco Intl

Fri 6/26

12:30 am-4:35 pm

1 stop17h 05m

$683

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 6/20

6:15 am-11:23 pm

1 stop16h 08m

Port of Spain Piarco Intl

Fri 6/26

12:30 am-2:18 pm

2 stops14h 48m

$687

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 6/19

5:00 am-11:23 pm

2 stops17h 23m

Port of Spain Piarco Intl

Fri 6/26

12:30 am-9:42 am

1 stop10h 12m

$699

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 6/19

10:53 am-9:25 pm

1 stop9h 32m

Port of Spain Piarco Intl

Sat 6/27

3:20 pm-8:49 am

2 stops18h 29m

$718

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 6/19

5:25 am-2:05 pm

1 stop7h 40m

Port of Spain Piarco Intl

Sat 6/27

3:20 pm-10:23 am

1 stop20h 03m

$730

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 6/20

8:06 pm-2:05 pm

2 stops16h 59m

Port of Spain Piarco Intl

Sat 6/27

3:20 pm-8:49 am

2 stops18h 29m

$738

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 6/20

10:53 am-9:25 pm

1 stop9h 32m

Port of Spain Piarco Intl

Sat 6/27

7:55 am-10:23 am

1 stop27h 28m

$750

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Port of Spain from

How to get the cheapest flight ticket from St. Louis to Port of Spain

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Port of Spain?

The cheapest day to depart from St. Louis to Port of Spain is on a Monday when prices can be found for as low as $662. Flights from St. Louis to Port of Spain on a Friday will generally be more expensive and average around $861. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

15h 56m

Direct flights

None
The fastest flight from St. Louis to Port of Spain takes 15h 56m
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

  • 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 15h 56m.

  • 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 many operators does momondo search for flights from Lambert-St Louis Airport to Port of Spain Piarco Intl Airport?

  • 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.

  • What is the most popular airline from St. Louis to Port of Spain?

Best airlines flying from St. Louis to Port of Spain

Compare and see reviews for airlines that fly from St. Louis to Port of Spain with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $558Free CancellationRating
7.2
11,067 reviews
Search American Airlines flights

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.

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