Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Port of Spain to St. Louis from $482

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Port of Spain to St. Louis departing on 1/13. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
2:20 am - 3:29 pmPOS-STL
15h 09m1 stop
Air Canada Logo
1:30 pm - 1:35 amSTL-POS
35h 05m2 stops
$482Air Canada
Find Deal
mar., ene. 13 - mié., may. 27
American Airlines Logo
4:30 pm - 11:59 pmPOS-STL
9h 29m1 stop
American Airlines Logo
5:25 am - 2:05 pmSTL-POS
7h 40m1 stop
$612American Airlines
Find Deal
jue., ene. 15 - jue., may. 28
American Airlines Logo
4:30 pm - 10:21 amPOS-STL
19h 51m2 stops
American Airlines Logo
5:25 am - 2:05 pmSTL-POS
7h 40m1 stop
$617American Airlines
Find Deal
jue., ene. 15 - jue., may. 28
United Airlines Logo
2:20 am - 10:58 amPOS-STL
10h 38m1 stop
United Airlines Logo
6:00 am - 12:23 amSTL-POS
16h 23m1 stop
$637United Airlines
Find Deal
sáb., feb. 28 - mar., mar. 3
United Airlines Logo
1:30 am - 10:04 amPOS-STL
10h 34m1 stop
United Airlines Logo
6:15 am - 12:23 amSTL-POS
16h 08m1 stop
$641United Airlines
Find Deal
lun., dic. 1 - mar., dic. 9
United Airlines Logo
1:30 am - 3:38 pmPOS-STL
16h 08m1 stop
United Airlines Logo
6:30 am - 12:23 amSTL-POS
15h 53m2 stops
$642United Airlines
Find Deal
sáb., feb. 28 - mar., mar. 3
United Airlines Logo
1:30 am - 4:04 pmPOS-STL
16h 34m1 stop
United Airlines Logo
5:27 pm - 12:23 amSTL-POS
28h 56m2 stops
$645United Airlines
Find Deal
lun., dic. 1 - mar., dic. 9
United Airlines Logo
1:30 am - 9:49 amPOS-STL
10h 19m1 stop
United Airlines Logo
6:00 am - 12:23 amSTL-POS
16h 23m1 stop
$648United Airlines
Find Deal
dom., dic. 21 - lun., dic. 29
United Airlines Logo
1:30 am - 10:43 pmPOS-STL
47h 13m2 stops
United Airlines Logo
6:00 am - 12:23 amSTL-POS
16h 23m1 stop
$694United Airlines
Find Deal
dom., dic. 21 - lun., dic. 29
American Airlines Logo
6:02 am - 10:35 pmPOS-STL
18h 33m1 stop
American Airlines Logo
6:00 pm - 3:46 pmSTL-POS
19h 46m1 stop
$750American Airlines
Find Deal
lun., dic. 22 - lun., dic. 29

American Airlines flights from Port of Spain to St. Louis

Our best American Airlines deals on Port of Spain to St. Louis flight tickets
American Airlines
Jan 15
POS4:30 pmPort of Spain Piarco Intl
19h 51m
2 stops
STL10:21 amLambert-St Louis
May 28
STL5:25 amLambert-St Louis
7h 40m
1 stop
POS2:05 pmPort of Spain Piarco Intl
$617
Find similar
American Airlines
Dec 22
POS6:02 amPort of Spain Piarco Intl
18h 33m
1 stop
STL10:35 pmLambert-St Louis
Dec 29
STL6:00 pmLambert-St Louis
19h 46m
1 stop
POS3:46 pmPort of Spain Piarco Intl
$750
Find similar
American Airlines
Dec 22
POS4:46 pmPort of Spain Piarco Intl
18h 10m
2 stops
STL8:56 amLambert-St Louis
Dec 29
STL6:00 pmLambert-St Louis
19h 46m
1 stop
POS3:46 pmPort of Spain Piarco Intl
$762
Find similar

Air Canada flights from Port of Spain to St. Louis

Our best Air Canada deals on Port of Spain to St. Louis flight tickets
Air Canada
Mar 3
POS2:20 amPort of Spain Piarco Intl
15h 09m
1 stop
STL3:29 pmLambert-St Louis
Mar 9
STL4:05 pmLambert-St Louis
31h 15m
1 stop
POS12:20 amPort of Spain Piarco Intl
$463
Find similar
Air Canada
Jan 13
POS2:20 amPort of Spain Piarco Intl
15h 09m
1 stop
STL3:29 pmLambert-St Louis
May 27
STL1:30 pmLambert-St Louis
35h 05m
2 stops
POS1:35 amPort of Spain Piarco Intl
$482
Find similar
Air Canada
Mar 1
POS2:20 amPort of Spain Piarco Intl
15h 09m
1 stop
STL3:29 pmLambert-St Louis
Mar 9
STL4:05 pmLambert-St Louis
31h 15m
1 stop
POS12:20 amPort of Spain Piarco Intl
$539
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Port of Spain to St. Louis 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 noviembre 13, 2025.
Use the filters below to find and compare flights from Port of Spain to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

mar. 1/13

2:20 am-3:29 pm

1 stop15h 09m

Lambert-St Louis

mié. 5/27

1:30 pm-1:35 am

2 stops35h 05m

$482

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

jue. 1/15

4:30 pm-11:59 pm

1 stop9h 29m

Lambert-St Louis

jue. 5/28

5:25 am-2:05 pm

1 stop7h 40m

$612

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

jue. 1/15

4:30 pm-10:21 am

2 stops19h 51m

Lambert-St Louis

jue. 5/28

5:25 am-2:05 pm

1 stop7h 40m

$617

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

sáb. 2/28

2:20 am-10:58 am

1 stop10h 38m

Lambert-St Louis

mar. 3/3

6:00 am-12:23 am

1 stop16h 23m

$637

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

lun. 12/1

1:30 am-10:04 am

1 stop10h 34m

Lambert-St Louis

mar. 12/9

6:15 am-12:23 am

1 stop16h 08m

$641

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

sáb. 2/28

1:30 am-3:38 pm

1 stop16h 08m

Lambert-St Louis

mar. 3/3

6:30 am-12:23 am

2 stops15h 53m

$642

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

lun. 12/1

1:30 am-4:04 pm

1 stop16h 34m

Lambert-St Louis

mar. 12/9

5:27 pm-12:23 am

2 stops28h 56m

$645

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

dom. 12/21

1:30 am-9:49 am

1 stop10h 19m

Lambert-St Louis

lun. 12/29

6:00 am-12:23 am

1 stop16h 23m

$648

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

dom. 12/21

1:30 am-10:43 pm

2 stops47h 13m

Lambert-St Louis

lun. 12/29

6:00 am-12:23 am

1 stop16h 23m

$694

Port of SpainSt. Louis

POS - STL

POSSTL

Port of Spain Piarco Intl

lun. 12/22

6:02 am-10:35 pm

1 stop18h 33m

Lambert-St Louis

lun. 12/29

6:00 pm-3:46 pm

1 stop19h 46m

$750

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

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

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 St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $556. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $782. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Port of Spain in the morning is the least expensive time of day to depart. momondo users have found prices as low as $680 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $713 per ticket.

Can stopping save me money on Port of Spain to St. Louis flights?

You could potentially save up to 1% on your flight if you consider stops on a Port of Spain to St. Louis flight.

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

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

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

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

Direct flights

None
There are no direct flights from Port of Spain to St. Louis. There are no popular flight routes from Port of Spain to St. Louis.
Search flight deals

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

    A flight from Port of Spain Piarco Intl to Lambert-St Louis will travel around 2617.4 mi. A reasonable flight in good conditions will take 10h 19m.

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Port of Spain Piarco Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Port of Spain to St. Louis. momondo saves you time and could save you money on your trip.

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

Flights from Port of Spain to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to St. Louis from Port of Spain. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Port of Spain to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
sáb. 12/13
sáb. 12/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States