HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Port of Spain

$175+ Cheap flights from Dulles Intl (IAD) to Port of Spain (POS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — POS
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Port of Spain with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dulles Intl to Port of Spain

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Port of Spain (POS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$353
(Copa Airlines)

One-way from

$175
(Kiwi.com)

Popular in

February

Cheapest in

January

Average price

$497
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Port of Spain Piarco Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Port of Spain Piarco Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to Port of Spain Piarco Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Port of Spain Piarco Intl
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($156 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Dulles Intl to Port of Spain

Cheapest flights from Dulles Intl to Port of Spain
Explore the most affordable flight options available from Dulles Intl to Port of Spain. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:30 amIAD - POS
1 stop14h 53mUnited Airlines
Thu 12/111:30 amPOS - IAD
1 stop20h 12mUnited Airlines
Deal found 11/5$379
This American Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:05 pmIAD - POS
2 stops18h 28mAmerican Airlines
Sat 12/134:33 pmPOS - IAD
2 stops21h 47mAmerican Airlines
Deal found 11/6$383
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:30 amIAD - POS
1 stop14h 53mUnited Airlines
Wed 12/101:30 amPOS - IAD
1 stop21h 45mUnited Airlines
Deal found 11/6$387
This Copa Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:24 pmIAD - POS
1 stop9h 24mCopa Airlines
Mon 11/172:26 pmPOS - IAD
1 stop13h 56mCopa Airlines
Deal found 11/6$397
This American Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/284:34 pmIAD - POS
2 stops21h 56mAmerican Airlines
Fri 12/54:33 pmPOS - IAD
2 stops21h 47mAmerican Airlines
Deal found 11/5$398
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:00 amIAD - POS
1 stop17h 23mUnited Airlines
Mon 11/171:30 amPOS - IAD
1 stop10h 58mUnited Airlines
Deal found 11/6$409
This American Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:35 pmIAD - POS
2 stops20h 55mAmerican Airlines
Mon 11/174:30 pmPOS - IAD
2 stops18h 49mAmerican Airlines
Deal found 11/5$413
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:30 amIAD - POS
1 stop14h 53mUnited Airlines
Thu 11/201:30 amPOS - IAD
1 stop21h 42mUnited Airlines
Deal found 11/6$417
This Air Canada deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/139:45 amIAD - POS
2 stops14h 25mAir Canada
Sun 11/162:15 amPOS - IAD
1 stop19h 11mAir Canada
Deal found 11/6$433
This Copa Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:22 amIAD - POS
1 stop16h 26mCopa Airlines
Fri 11/142:26 pmPOS - IAD
1 stop10h 07mCopa Airlines
Deal found 11/5$436
This United Airlines deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/68:30 amIAD - POS
1 stop14h 53mUnited Airlines
Fri 12/121:30 amPOS - IAD
1 stop21h 51mUnited Airlines
Deal found 11/6$438
This Air Canada deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:00 amIAD - POS
1 stop15h 10mAir Canada
Tue 11/252:15 amPOS - IAD
2 stops19h 39mAir Canada
Deal found 11/5$443

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Port of Spain that are best for you.

Fly from

Dulles Intl

Fly to

Port of Spain

Route

Depart

Return

Price

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Fri 1/30

8:25 am-1:44 am

1 stop16h 19m

Port of Spain Piarco Intl

Mon 3/2

3:46 am-2:00 pm

1 stop11h 14m

$373

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Thu 11/13

3:24 pm-1:48 am

1 stop9h 24m

Port of Spain Piarco Intl

Mon 11/17

2:26 pm-3:22 am

1 stop13h 56m

$397

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Sat 12/6

8:30 am-12:23 am

1 stop14h 53m

Port of Spain Piarco Intl

Fri 12/12

1:30 am-10:21 pm

1 stop21h 51m

$438

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Fri 11/14

9:00 am-1:10 am

1 stop15h 10m

Port of Spain Piarco Intl

Sun 11/16

2:15 am-8:26 pm

1 stop19h 11m

$483

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Thu 12/11

6:00 am-12:23 am

1 stop17h 23m

Port of Spain Piarco Intl

Tue 12/16

1:30 am-11:23 am

1 stop10h 53m

$489

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Fri 1/16

12:35 pm-12:23 am

1 stop10h 48m

Port of Spain Piarco Intl

Sat 1/24

1:30 am-8:49 pm

1 stop20h 19m

$489

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Thu 12/11

6:00 am-12:23 am

1 stop17h 23m

Port of Spain Piarco Intl

Sun 12/14

1:30 am-8:42 pm

1 stop20h 12m

$489

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Fri 11/14

3:24 pm-1:48 am

1 stop9h 24m

Port of Spain Piarco Intl

Mon 11/17

2:26 pm-11:33 pm

1 stop10h 07m

$511

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Wed 12/3

3:32 pm-1:48 am

1 stop9h 16m

Port of Spain Piarco Intl

Wed 12/10

2:38 pm-3:22 am

1 stop13h 44m

$514

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Wed 11/19

8:30 am-12:23 am

1 stop14h 53m

Port of Spain Piarco Intl

Tue 11/25

1:30 am-11:28 am

1 stop10h 58m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 19 results
1
2

Compare providers for flights from Dulles Intl to Port of Spain

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Port of Spain in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Port of Spain flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Port of Spain flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Port of Spain flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Port of Spain flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Port of Spain flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Port of Spain

Have a flexible travel schedule? Discover the best time to fly to Port of Spain from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Port of Spain

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Port of Spain?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Port of Spain (average of $196). Flying from Washington, D.C. Dulles Intl Airport to Port of Spain in December is currently the most expensive (average of $448). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to POS?

Find hourly flight availability from Dulles Intl to Port of Spain. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 29% on flights from Washington, D.C. Dulles Intl Airport to Port of Spain by exploring options for tickets in the evening.

Reviews of airlines servicing Port of Spain

Get insights into the airlines that provide service to Port of Spain. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Port of Spain. Reviews last updated November 6, 2025.
See what other customers who have flown with Copa Airlines and United Airlines from Washington, D.C. Dulles Intl Airport to Port of Spain have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,561 reviews

Entertainment

6.8

Comfort

7.4

Boarding

7.8

Food

6.9

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.
Copa Airlines
7.6
Good
1,561 reviews
Copa Airlines
7.6
Good
1,561 reviews

Entertainment

6.8

Comfort

7.4

Boarding

7.8

Food

6.9

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.
United Airlines
7.4
Good
9,003 reviews
Copa Airlines
7.6
Good
1,561 reviews

Entertainment

6.8

Comfort

7.4

Boarding

7.8

Food

6.9

Crew

8.1

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

PEI - PTY

The attention to us was excellent. Help was provided with care.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Port of Spain. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Port of Spain from Washington, D.C. Dulles Intl?

    Port of Spain Piarco Intl (POS), located 12.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Port of Spain. 2 airlines have flights to Piarco Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Port of Spain Piarco Intl should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Port of Spain?

    Departing from Washington, D.C. Dulles Intl Airport to Port of Spain will take you 14h 53m. Washington, D.C. Dulles Intl Airport and Port of Spain are separated by a distance of 2195 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Port of Spain round-trip?

    Currently priced at $312, Copa Airlines will fly you from Washington, D.C. Dulles Intl Airport to Port of Spain and back. In addition to Copa Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $367. Copa Airlines is 48% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Dulles Intl to Port of Spain that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Port of Spain flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Port of Spain?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Port of Spain.

  • Can I find deals for business class flights from Dulles Intl to Port of Spain?

    Yes. Cheapflights offers flight deals from Dulles Intl to Port of Spain by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Port of Spain?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Port of Spain (average of $196). Flying from Washington, D.C. Dulles Intl Airport to Port of Spain in December is currently the most expensive (average of $448). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Port of Spain

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Port of Spain flights
Baltimore to Port of Spain flights
Reagan-National to Scarborough flights
Dulles Intl to Scarborough flights
Baltimore to Scarborough flights

Top 2 airlines flying from Dulles Intl to Port of Spain

Discover the top 2 airlines that operate flights from Dulles Intl to Port of Spain. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$312Average$530FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$367Average$488FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.