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Dulles Intl

$231+ Cheap flights from Port of Spain (POS) to Dulles Intl (IAD)

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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
POS — IAD
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheap flight deals from Port of Spain to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Port of Spain (POS) to Dulles Intl (IAD). 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$405
(Kiwi.com)

One-way from

$231
(Copa Airlines)

Popular in

August

Cheapest in

April

Average price

$502
Provider with most accurate pricing for Port of Spain Piarco Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Port of Spain Piarco Intl-Washington, D.C. Dulles Intl flights.
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From Port of Spain Piarco Intl to Washington, D.C. Dulles Intl
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One-way flight from Port of Spain Piarco Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 21% potential increase in price ($133 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Port of Spain to Dulles Intl

Cheapest flights from Port of Spain to Dulles Intl
Explore the most affordable flight options available from Port of Spain to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/203:48 amPOS - IAD
1 stop24h 34mCopa Airlines
Sun 12/73:32 pmIAD - POS
1 stop20h 59mCopa Airlines
Deal found 10/13$405
This Gotogate deal was found by Cheapflights users on 10/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/212:26 pmPOS - IAD
1 stop10h 07mMultiple Airlines
Sun 12/79:45 amIAD - POS
2 stops14h 25mMultiple Airlines
Deal found 10/13$406
This United Airlines deal was found by Cheapflights users on 10/13. 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 11/201:30 amPOS - IAD
1 stop21h 42mUnited Airlines
Wed 12/36:00 amIAD - POS
1 stop17h 23mUnited Airlines
Deal found 10/13$408
This United Airlines deal was found by Cheapflights users on 10/13. 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 11/181:30 amPOS - IAD
1 stop10h 58mUnited Airlines
Thu 12/46:00 amIAD - POS
1 stop17h 23mUnited Airlines
Deal found 10/13$410
This American Airlines deal was found by Cheapflights users on 10/14. 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.
Mon 11/244:30 pmPOS - IAD
2 stops17h 11mAmerican Airlines
Tue 12/25:29 pmIAD - POS
2 stops21h 04mAmerican Airlines
Deal found 10/14$414
This United Airlines deal was found by Cheapflights users on 10/12. 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.
Wed 12/171:30 amPOS - IAD
1 stop10h 58mUnited Airlines
Wed 12/3112:48 pmIAD - POS
1 stop10h 35mUnited Airlines
Deal found 10/12$418
This American Airlines deal was found by Cheapflights users on 10/13. 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 11/214:30 pmPOS - IAD
2 stops17h 11mAmerican Airlines
Sun 12/79:15 amIAD - POS
2 stops13h 44mAmerican Airlines
Deal found 10/13$419
This American Airlines deal was found by Cheapflights users on 10/14. 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.
Sun 11/234:30 pmPOS - IAD
2 stops19h 12mAmerican Airlines
Wed 12/311:25 amIAD - POS
2 stops27h 08mAmerican Airlines
Deal found 10/14$420
This United Airlines deal was found by Cheapflights users on 10/14. 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 12/221:30 amPOS - IAD
1 stop21h 49mUnited Airlines
Tue 12/3010:15 pmIAD - POS
1 stop25h 08mUnited Airlines
Deal found 10/14$426
This United Airlines deal was found by Cheapflights users on 10/12. 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 11/41:30 amPOS - IAD
1 stop15h 46mUnited Airlines
Sun 11/168:30 amIAD - POS
1 stop14h 53mUnited Airlines
Deal found 10/12$427
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Thu 11/67:19 amPOS - IAD
2 stops17h 40mAmerican Airlines
Mon 11/105:29 pmIAD - POS
2 stops21h 01mAmerican Airlines
Deal found 10/12$431

Cheapflights Fare Finder

 
Customize your flight search to find flights from Port of Spain to Dulles Intl 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 October 14, 2025.
Use the filters below to find and compare flights from Port of Spain to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Port of Spain

Fly to

Dulles Intl

Route

Depart

Return

Price

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Thu 11/20

1:30 am-11:44 pm

1 stop23h 14m

Washington, D.C. Dulles Intl

Thu 12/4

12:45 pm-12:23 am

1 stop10h 38m

$408

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Thu 11/20

1:30 am-10:12 pm

1 stop21h 42m

Washington, D.C. Dulles Intl

Fri 12/5

6:00 am-12:23 am

1 stop17h 23m

$408

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Wed 11/26

1:30 am-8:51 pm

1 stop20h 21m

Washington, D.C. Dulles Intl

Thu 12/4

6:00 am-12:23 am

1 stop17h 23m

$410

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Tue 11/18

1:30 am-11:28 am

1 stop10h 58m

Washington, D.C. Dulles Intl

Thu 12/4

6:00 am-12:23 am

1 stop17h 23m

$410

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 11/24

4:30 pm-8:41 am

2 stops17h 11m

Washington, D.C. Dulles Intl

Wed 12/3

11:25 am-3:33 pm

2 stops27h 08m

$414

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Fri 2/27

1:30 am-11:26 am

1 stop10h 56m

Washington, D.C. Dulles Intl

Sat 3/7

10:06 pm-11:23 pm

1 stop24h 17m

$426

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 12/22

1:30 am-10:19 pm

1 stop21h 49m

Washington, D.C. Dulles Intl

Tue 12/30

10:15 pm-12:23 am

1 stop25h 08m

$426

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Tue 11/4

1:30 am-4:16 pm

1 stop15h 46m

Washington, D.C. Dulles Intl

Sun 11/16

8:30 am-12:23 am

1 stop14h 53m

$427

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Fri 10/31

2:27 pm-12:33 am

1 stop10h 06m

Washington, D.C. Dulles Intl

Wed 11/5

8:22 am-1:48 am

1 stop16h 26m

$432

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Wed 12/17

3:47 am-2:02 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Sun 1/4

1:12 am-1:11 pm

1 stop10h 59m

$441

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 17 results
1
2

Compare providers for flights from Port of Spain to Dulles Intl

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 Port of Spain to Dulles Intl in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Port of Spain-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Port of Spain-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Port of Spain-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Port of Spain-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Port of Spain-Washington, D.C. Dulles Intl Airport 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 Port of Spain to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Port of Spain 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 Port of Spain to Washington, D.C. Dulles Intl Airport

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

Currently, April is the cheapest month in which you can book a flight from Port of Spain to Washington, D.C. Dulles Intl Airport (average of $242). Flying from Port of Spain to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $516). 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 POS to IAD?

Find hourly flight availability from Port of Spain to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

It’s typically best to fly out from Port of Spain to Washington, D.C. Dulles Intl Airport at noon. Doing so could potentially save you 21% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost to fly round-trip from Port of Spain to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated October 14, 2025.
Peruse reviews from past customers who have flown with Copa Airlines and United Airlines from Port of Spain to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,547 reviews

Overall

7.6

Comfort

7.4

Food

6.8

Crew

8.1

Entertainment

6.8

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring
Copa Airlines
7.6
Good
1,547 reviews
Copa Airlines
7.6
Good
1,547 reviews

Overall

7.6

Comfort

7.4

Food

6.8

Crew

8.1

Entertainment

6.8

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring
United Airlines
7.4
Good
8,975 reviews
Copa Airlines
7.6
Good
1,547 reviews

Overall

7.6

Comfort

7.4

Food

6.8

Crew

8.1

Entertainment

6.8

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Juan Pablo,Sep 2025

MEX - PTY

never better, had a very plesent trip to panama, cant say the same thing of my trip, from panama to santa cruz... it was very poor, unconftrable and boring

Related info for your journey

Find useful and relevant information for your journey from Port of Spain to Dulles Intl. 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 from for flights from Port of Spain to Washington, D.C. Dulles Intl?

    For a flight from Port of Spain to Washington, D.C. Dulles Intl, you will be flying from Piarco Intl. Port of Spain Piarco Intl (POS) is just 12.6 mi from the center of the city. Piarco Intl is the only Port of Spain airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 2 airlines have flights to Washington, D.C. Dulles Intl from Port of Spain Piarco Intl on a regular basis.

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

    There are many flights that can get you from Port of Spain to Washington, D.C. Dulles Intl Airport in 17h 11m. Fly via United Airlines or American Airlines to get the fastest option. There are 2195 mi between Port of Spain and Washington, D.C. Dulles Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $335, Copa Airlines will fly you from Port of Spain to Washington, D.C. Dulles Intl Airport 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 $395. Copa Airlines is priced at 30% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Port of Spain to Dulles Intl 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 Port of Spain to Washington, D.C. Dulles Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from Port of Spain to Washington, D.C. Dulles Intl Airport (average of $242). Flying from Port of Spain to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $516). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Arlington
Tysons
Silver Spring
Springfield
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Rockville

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Alternative routes for Port of Spain to Dulles Intl

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

Top 2 airlines flying from Port of Spain to Dulles Intl

Discover the top 2 airlines that operate flights from Port of Spain to Dulles Intl. 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$335Average$456FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$395Average$439FlexibilityNo cancel feeOn-time69%

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