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Cheap flights from St. Louis to Port of Spain from $603

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 11/9. 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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Cheap round-trip flights

American Airlines Logo
5:21 am - 3:16 pmSTL-POS
7h 55m1 stop
American Airlines Logo
7:01 am - 10:32 pmPOS-STL
17h 31m1 stop
$603American Airlines
Find Deal
Sun, Nov 9 - Sun, Nov 16
American Airlines Logo
9:12 am - 11:36 pmSTL-POS
12h 24m2 stops
American Airlines Logo
7:01 am - 10:32 pmPOS-STL
17h 31m1 stop
$608American Airlines
Find Deal
Sun, Nov 9 - Sun, Nov 16
United Airlines Logo
6:15 am - 12:23 amSTL-POS
16h 08m1 stop
United Airlines Logo
1:30 am - 6:47 pmPOS-STL
19h 17m1 stop
$688United Airlines
Find Deal
Sun, Nov 9 - Sat, Nov 15
United Airlines Logo
6:43 pm - 12:23 amSTL-POS
27h 40m2 stops
United Airlines Logo
1:30 am - 2:25 pmPOS-STL
14h 55m2 stops
$693United Airlines
Find Deal
Sun, Nov 9 - Sat, Nov 15
United Airlines Logo
11:20 am - 11:23 pmSTL-POS
11h 03m1 stop
United Airlines Logo
12:30 am - 6:47 pmPOS-STL
19h 17m1 stop
$728United Airlines
Find Deal
Tue, Oct 28 - Thu, Oct 30
United Airlines Logo
6:30 am - 11:23 pmSTL-POS
15h 53m2 stops
United Airlines Logo
12:30 am - 3:46 pmPOS-STL
16h 16m2 stops
$733United Airlines
Find Deal
Tue, Oct 28 - Thu, Oct 30
Air Canada Logo
4:05 pm - 1:15 amSTL-POS
31h 10m1 stop
Air Canada Logo
2:15 am - 3:29 pmPOS-STL
15h 14m1 stop
$1,571Air Canada
Find Deal
Wed, Dec 17 - Tue, Jan 6
Air Canada Logo
4:05 pm - 1:15 amSTL-POS
31h 10m1 stop
Air Canada Logo
2:15 am - 3:29 pmPOS-STL
15h 14m1 stop
$1,671Air Canada
Find Deal
Wed, Dec 17 - Sun, Jan 4
Logo
4:05 pm - 5:40 amSTL-POS
11h 35m1 stop
Logo
2:15 am - 3:29 pmPOS-STL
15h 14m1 stop
$3,767
Find Deal
Fri, Dec 19 - Fri, Jan 2
Logo
6:30 am - 1:30 amSTL-POS
17h 00m3 stops
Logo
10:00 pm - 3:29 pmPOS-STL
43h 29m2 stops
$4,259
Find Deal
Sat, Dec 20 - Sun, Jan 4

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
Dec 17
STL4:05 pmLambert-St Louis
31h 10m
1 stop
POS1:15 amPort of Spain Piarco Intl
Jan 6
POS2:15 amPort of Spain Piarco Intl
15h 14m
1 stop
STL3:29 pmLambert-St Louis
$1,571
Find similar
Air Canada
Dec 17
STL4:05 pmLambert-St Louis
31h 10m
1 stop
POS1:15 amPort of Spain Piarco Intl
Jan 4
POS2:15 amPort of Spain Piarco Intl
15h 14m
1 stop
STL3:29 pmLambert-St Louis
$1,671
Find similar
Air Canada
Dec 20
STL4:05 pmLambert-St Louis
31h 10m
1 stop
POS1:15 amPort of Spain Piarco Intl
Jan 2
POS2:15 amPort of Spain Piarco Intl
15h 14m
1 stop
STL3:29 pmLambert-St Louis
$1,749
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
Nov 9
STL5:21 amLambert-St Louis
7h 55m
1 stop
POS3:16 pmPort of Spain Piarco Intl
Nov 16
POS7:01 amPort of Spain Piarco Intl
17h 31m
1 stop
STL10:32 pmLambert-St Louis
$603
Find similar
American Airlines
Nov 9
STL9:12 amLambert-St Louis
12h 24m
2 stops
POS11:36 pmPort of Spain Piarco Intl
Nov 16
POS7:01 amPort of Spain Piarco Intl
17h 31m
1 stop
STL10:32 pmLambert-St Louis
$608
Find similar
American Airlines
Aug 4
STL5:00 amLambert-St Louis
8h 00m
1 stop
POS2:00 pmPort of Spain Piarco Intl
Aug 8
POS3:35 pmPort of Spain Piarco Intl
17h 45m
2 stops
STL8:20 amLambert-St Louis
$933
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 July 31, 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

Sun 11/9

5:21 am-3:16 pm

1 stop7h 55m

Port of Spain Piarco Intl

Sun 11/16

7:01 am-10:32 pm

1 stop17h 31m

$603

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sun 11/9

9:12 am-11:36 pm

2 stops12h 24m

Port of Spain Piarco Intl

Sun 11/16

7:01 am-10:32 pm

1 stop17h 31m

$608

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sun 11/9

6:15 am-12:23 am

1 stop16h 08m

Port of Spain Piarco Intl

Sat 11/15

1:30 am-6:47 pm

1 stop19h 17m

$688

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sun 11/9

6:43 pm-12:23 am

2 stops27h 40m

Port of Spain Piarco Intl

Sat 11/15

1:30 am-2:25 pm

2 stops14h 55m

$693

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 10/28

11:20 am-11:23 pm

1 stop11h 03m

Port of Spain Piarco Intl

Thu 10/30

12:30 am-6:47 pm

1 stop19h 17m

$728

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Tue 10/28

6:30 am-11:23 pm

2 stops15h 53m

Port of Spain Piarco Intl

Thu 10/30

12:30 am-3:46 pm

2 stops16h 16m

$733

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Wed 12/17

4:05 pm-1:15 am

1 stop31h 10m

Port of Spain Piarco Intl

Tue 1/6

2:15 am-3:29 pm

1 stop15h 14m

$1,571

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Wed 12/17

4:05 pm-1:15 am

1 stop31h 10m

Port of Spain Piarco Intl

Sun 1/4

2:15 am-3:29 pm

1 stop15h 14m

$1,671

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 12/19

4:05 pm-5:40 am

1 stop11h 35m

Port of Spain Piarco Intl

Fri 1/2

2:15 am-3:29 pm

1 stop15h 14m

$3,767

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 12/20

6:30 am-1:30 am

3 stops17h 00m

Port of Spain Piarco Intl

Sun 1/4

10:00 pm-3:29 pm

2 stops43h 29m

$4,259

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

Best Price Found

$603

Fastest flight time

7h 55m

Direct flights

None

Airports in Port of Spain

1 airport
The best flight deal from St. Louis to Port of Spain found on momondo in the last 72 hours is $603
The fastest flight from St. Louis to Port of Spain takes 7h 55m
There are no direct flights from St. Louis to Port of Spain. Popular non-direct route for this connection is Lambert-St Louis Airport - Port of Spain Piarco Intl Airport.
There is 1 airport near Port of Spain: Port of Spain Piarco Intl (POS)
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 7h 55m.

  • 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
8,900 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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