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Cheap flights from St. Louis to Port of Spain from $433

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 11/22. 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

Air Canada Logo
4:05 pm - 1:10 amSTL-POS
31h 05m1 stop
Air Canada Logo
2:15 am - 3:29 pmPOS-STL
15h 14m1 stop
$433Air Canada
Find Deal
Sat, Nov 22 - Fri, Nov 28
Air Canada Logo
4:05 pm - 1:10 amSTL-POS
31h 05m1 stop
Air Canada Logo
2:15 am - 3:29 pmPOS-STL
15h 14m1 stop
$483Air Canada
Find Deal
Sat, Nov 22 - Tue, Nov 25
Air Canada Logo
4:05 pm - 1:10 amSTL-POS
31h 05m1 stop
Air Canada Logo
2:15 am - 3:29 pmPOS-STL
15h 14m1 stop
$533Air Canada
Find Deal
Thu, Nov 20 - Thu, Nov 27
Multiple Airlines Logo
10:57 am - 8:00 pmSTL-POS
8h 03m1 stop
Multiple Airlines Logo
10:10 am - 4:01 pmPOS-STL
31h 51m2 stops
$558Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
6:08 pm - 2:25 pmSTL-POS
19h 17m1 stop
American Airlines Logo
4:30 pm - 4:11 pmPOS-STL
25h 41m1 stop
$559American Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
6:25 am - 9:20 pmSTL-POS
13h 55m2 stops
American Airlines Logo
7:19 am - 7:29 pmPOS-STL
14h 10m2 stops
$564American Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
United Airlines Logo
11:20 am - 12:23 amSTL-POS
11h 03m1 stop
United Airlines Logo
1:30 am - 3:50 pmPOS-STL
16h 20m1 stop
$579United Airlines
Find Deal
Fri, Nov 21 - Thu, Nov 27
Air Canada Logo
4:05 pm - 1:10 amSTL-POS
31h 05m1 stop
Air Canada Logo
2:15 am - 3:29 pmPOS-STL
15h 14m1 stop
$583Air Canada
Find Deal
Wed, Nov 19 - Fri, Nov 28
United Airlines Logo
11:20 am - 12:23 amSTL-POS
11h 03m1 stop
United Airlines Logo
1:30 am - 3:46 pmPOS-STL
16h 16m2 stops
$615United Airlines
Find Deal
Fri, Nov 21 - Thu, Nov 27
Multiple Airlines Logo
10:57 am - 8:00 pmSTL-POS
8h 03m1 stop
Multiple Airlines Logo
3:48 am - 9:40 amPOS-STL
31h 52m2 stops
$664Multiple Airlines
Find Deal
Thu, Oct 30 - Wed, Nov 5

Air Canada flights from St. Louis to Port of Spain

Our best Air Canada deals on St. Louis to Port of Spain flight tickets
Air Canada
Nov 22
STL4:05 pmLambert-St Louis
31h 05m
1 stop
POS1:10 amPort of Spain Piarco Intl
Nov 28
POS2:15 amPort of Spain Piarco Intl
15h 14m
1 stop
STL3:29 pmLambert-St Louis
$433
Find similar
Air Canada
Nov 22
STL4:05 pmLambert-St Louis
31h 05m
1 stop
POS1:10 amPort of Spain Piarco Intl
Nov 25
POS2:15 amPort of Spain Piarco Intl
15h 14m
1 stop
STL3:29 pmLambert-St Louis
$483
Find similar
Air Canada
Nov 20
STL4:05 pmLambert-St Louis
31h 05m
1 stop
POS1:10 amPort of Spain Piarco Intl
Nov 27
POS2:15 amPort of Spain Piarco Intl
15h 14m
1 stop
STL3:29 pmLambert-St Louis
$533
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
Oct 30
STL6:08 pmLambert-St Louis
19h 17m
1 stop
POS2:25 pmPort of Spain Piarco Intl
Nov 6
POS4:30 pmPort of Spain Piarco Intl
25h 41m
1 stop
STL4:11 pmLambert-St Louis
$559
Find similar
American Airlines
Oct 30
STL6:25 amLambert-St Louis
13h 55m
2 stops
POS9:20 pmPort of Spain Piarco Intl
Nov 6
POS7:19 amPort of Spain Piarco Intl
14h 10m
2 stops
STL7:29 pmLambert-St Louis
$564
Find similar
American Airlines
Nov 21
STL5:15 amLambert-St Louis
16h 23m
1 stop
POS11:38 pmPort of Spain Piarco Intl
Nov 28
POS7:19 amPort of Spain Piarco Intl
17h 15m
1 stop
STL10:34 pmLambert-St Louis
$634
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 September 17, 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 11/22

4:05 pm-1:10 am

1 stop31h 05m

Port of Spain Piarco Intl

Fri 11/28

2:15 am-3:29 pm

1 stop15h 14m

$433

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 11/22

4:05 pm-1:10 am

1 stop31h 05m

Port of Spain Piarco Intl

Tue 11/25

2:15 am-3:29 pm

1 stop15h 14m

$483

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Thu 11/20

4:05 pm-1:10 am

1 stop31h 05m

Port of Spain Piarco Intl

Thu 11/27

2:15 am-3:29 pm

1 stop15h 14m

$533

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Thu 10/30

10:57 am-8:00 pm

1 stop8h 03m

Port of Spain Piarco Intl

Thu 11/6

10:10 am-4:01 pm

2 stops31h 51m

$558

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Thu 10/30

6:08 pm-2:25 pm

1 stop19h 17m

Port of Spain Piarco Intl

Thu 11/6

4:30 pm-4:11 pm

1 stop25h 41m

$559

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Thu 10/30

6:25 am-9:20 pm

2 stops13h 55m

Port of Spain Piarco Intl

Thu 11/6

7:19 am-7:29 pm

2 stops14h 10m

$564

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 11/21

11:20 am-12:23 am

1 stop11h 03m

Port of Spain Piarco Intl

Thu 11/27

1:30 am-3:50 pm

1 stop16h 20m

$579

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Wed 11/19

4:05 pm-1:10 am

1 stop31h 05m

Port of Spain Piarco Intl

Fri 11/28

2:15 am-3:29 pm

1 stop15h 14m

$583

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 11/21

11:20 am-12:23 am

1 stop11h 03m

Port of Spain Piarco Intl

Thu 11/27

1:30 am-3:46 pm

2 stops16h 16m

$615

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Thu 10/30

10:57 am-8:00 pm

1 stop8h 03m

Port of Spain Piarco Intl

Wed 11/5

3:48 am-9:40 am

2 stops31h 52m

$664

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

Direct flights

None
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.
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  • 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 8h 03m.

  • 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
United AirlinesPriceFrom $545Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $558Free CancellationRating
7.2
10,000 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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