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Cheap flights from St. Louis to Port of Spain from $292

This is the cheapest one-way 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 6/19. 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
12:10 pm - 12:15 am
STL
-
POS
35h 05m
2 stops
Air Canada Logo
1:20 am - 2:00 pm
POS
-
STL
13h 40m
1 stop
$516Air Canada
Sat, Oct 17 - Fri, Oct 23
Air Canada Logo
2:15 pm - 12:15 am
STL
-
POS
9h 00m
1 stop
Air Canada Logo
1:25 am - 8:22 pm
POS
-
STL
19h 57m
1 stop
$586Air Canada
Fri, Jun 19 - Fri, Jul 17
Air Canada Logo
12:10 pm - 12:15 am
STL
-
POS
35h 05m
2 stops
Air Canada Logo
1:20 am - 6:26 pm
POS
-
STL
18h 06m
2 stops
$596Air Canada
Sat, Oct 17 - Fri, Oct 23
Air Canada Logo
4:15 pm - 1:20 am
STL
-
POS
32h 05m
1 stop
Air Canada Logo
2:20 am - 3:30 pm
POS
-
STL
15h 10m
1 stop
$637Air Canada
Sat, Oct 31 - Tue, Nov 3
Air Canada Logo
4:15 pm - 1:20 am
STL
-
POS
32h 05m
1 stop
Air Canada Logo
2:20 am - 3:30 pm
POS
-
STL
15h 10m
1 stop
$638Air Canada
Sat, Oct 31 - Tue, Nov 3
United Airlines Logo
8:00 am - 11:23 pm
STL
-
POS
14h 23m
2 stops
United Airlines Logo
12:30 am - 10:10 am
POS
-
STL
10h 40m
1 stop
$650United Airlines
Wed, Aug 26 - Sat, Aug 29
American Airlines Logo
6:54 am - 11:18 pm
STL
-
POS
15h 24m
2 stops
American Airlines Logo
7:00 am - 10:41 pm
POS
-
STL
16h 41m
2 stops
$659American Airlines
Wed, Aug 26 - Sun, Aug 30
United Airlines Logo
6:14 am - 11:23 pm
STL
-
POS
16h 09m
1 stop
United Airlines Logo
12:30 am - 10:04 am
POS
-
STL
10h 34m
1 stop
$670United Airlines
Sat, Jun 27 - Fri, Jul 3
Air Canada Logo
2:15 pm - 12:15 am
STL
-
POS
9h 00m
1 stop
Air Canada Logo
1:25 am - 8:22 pm
POS
-
STL
19h 57m
1 stop
$673Air Canada
Fri, Jun 19 - Fri, Jul 17
Air Canada Logo
12:10 pm - 12:15 am
STL
-
POS
35h 05m
2 stops
Air Canada Logo
1:25 am - 2:02 pm
POS
-
STL
13h 37m
1 stop
$689Air Canada
Sat, Jul 4 - Mon, Jul 6

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
Aug 26
STL8:00 amLambert-St Louis
14h 23m
2 stops
POS11:23 pmPort of Spain Piarco Intl
Aug 29
POS12:30 amPort of Spain Piarco Intl
10h 40m
1 stop
STL10:10 amLambert-St Louis
$650
United Airlines
Jun 27
STL6:14 amLambert-St Louis
16h 09m
1 stop
POS11:23 pmPort of Spain Piarco Intl
Jul 3
POS12:30 amPort of Spain Piarco Intl
10h 34m
1 stop
STL10:04 amLambert-St Louis
$670
United Airlines
Jul 4
STL6:14 amLambert-St Louis
16h 09m
1 stop
POS11:23 pmPort of Spain Piarco Intl
Jul 6
POS2:00 amPort of Spain Piarco Intl
15h 07m
1 stop
STL4:07 pmLambert-St Louis
$770

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
Aug 26
STL6:54 amLambert-St Louis
15h 24m
2 stops
POS11:18 pmPort of Spain Piarco Intl
Aug 30
POS7:00 amPort of Spain Piarco Intl
16h 41m
2 stops
STL10:41 pmLambert-St Louis
$659
American Airlines
Jun 19
STL7:30 amLambert-St Louis
14h 30m
2 stops
POS11:00 pmPort of Spain Piarco Intl
Jul 18
POS3:18 pmPort of Spain Piarco Intl
18h 19m
2 stops
STL8:37 amLambert-St Louis
$699
American Airlines
Jun 19
STL5:14 amLambert-St Louis
16h 46m
2 stops
POS11:00 pmPort of Spain Piarco Intl
Jul 18
POS3:18 pmPort of Spain Piarco Intl
20h 06m
1 stop
STL10:24 amLambert-St Louis
$713

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 May 30, 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 - POS

STLPOS

Lambert-St Louis

Sat 10/17

12:10 pm-12:15 am

2 stops35h 05m

Port of Spain Piarco Intl

Fri 10/23

1:20 am-2:00 pm

1 stop13h 40m

$516

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 6/19

2:15 pm-12:15 am

1 stop9h 00m

Port of Spain Piarco Intl

Fri 7/17

1:25 am-8:22 pm

1 stop19h 57m

$586

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 10/17

12:10 pm-12:15 am

2 stops35h 05m

Port of Spain Piarco Intl

Fri 10/23

1:20 am-6:26 pm

2 stops18h 06m

$596

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 10/31

4:15 pm-1:20 am

1 stop32h 05m

Port of Spain Piarco Intl

Tue 11/3

2:20 am-3:30 pm

1 stop15h 10m

$637

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 10/31

4:15 pm-1:20 am

1 stop32h 05m

Port of Spain Piarco Intl

Tue 11/3

2:20 am-3:30 pm

1 stop15h 10m

$638
Quickest round-trip

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Wed 8/26

8:00 am-11:23 pm

2 stops14h 23m

Port of Spain Piarco Intl

Sat 8/29

12:30 am-10:10 am

1 stop10h 40m

$650

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Wed 8/26

6:54 am-11:18 pm

2 stops15h 24m

Port of Spain Piarco Intl

Sun 8/30

7:00 am-10:41 pm

2 stops16h 41m

$659

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 6/27

6:14 am-11:23 pm

1 stop16h 09m

Port of Spain Piarco Intl

Fri 7/3

12:30 am-10:04 am

1 stop10h 34m

$670

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Fri 6/19

2:15 pm-12:15 am

1 stop9h 00m

Port of Spain Piarco Intl

Fri 7/17

1:25 am-8:22 pm

1 stop19h 57m

$673

St. LouisPort of Spain

STL - POS

STLPOS

Lambert-St Louis

Sat 7/4

12:10 pm-12:15 am

2 stops35h 05m

Port of Spain Piarco Intl

Mon 7/6

1:25 am-2:02 pm

1 stop13h 37m

$689

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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 airline that flies from Lambert-St Louis to Port of Spain Piarco Intl?

American Airlines is the most popular carrier operating from Lambert-St Louis to Port of Spain Piarco Intl

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

24h 22m

Direct flights

None
The fastest flight from St. Louis to Port of Spain takes 24h 22m
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 24h 22m.

  • 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.

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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