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Dulles Intl

$241+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
POS — IAD
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$406
(United Airlines)

One-way from

$241
(Kiwi.com)

Popular in

August

Cheapest in

April

Average price

$412
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 November 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 November 5, 2025.

This American Airlines deal was found by Cheapflights users on 11/3. 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 12/67:10 amPOS - IAD
2 stops13h 21mAmerican Airlines
Wed 12/1011:25 amIAD - POS
2 stops27h 08mAmerican Airlines
Deal found 11/3$415
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/241:30 amPOS - IAD
1 stop23h 14mUnited Airlines
Tue 12/28:30 amIAD - POS
1 stop14h 53mUnited Airlines
Deal found 11/3$423
This United Airlines deal was found by Cheapflights users on 11/4. 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
Sat 1/105:45 pmIAD - POS
1 stop29h 38mUnited Airlines
Deal found 11/4$426
This United Airlines deal was found by Cheapflights users on 11/4. 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 12/412:45 pmIAD - POS
1 stop10h 38mUnited Airlines
Deal found 11/4$427
This American Airlines deal was found by Cheapflights users on 11/4. 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 stops21h 42mAmerican Airlines
Tue 12/27:59 amIAD - POS
2 stops14h 39mAmerican Airlines
Deal found 11/4$431
This Copa Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 11/72:26 pmPOS - IAD
1 stop13h 56mCopa Airlines
Tue 11/113:24 pmIAD - POS
1 stop9h 24mCopa Airlines
Deal found 11/4$432
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/71:30 amPOS - IAD
1 stop23h 14mUnited Airlines
Mon 11/1012:55 pmIAD - POS
1 stop10h 28mUnited Airlines
Deal found 11/4$440
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/151:30 amPOS - IAD
1 stop10h 59mUnited Airlines
Sun 11/2310:10 pmIAD - POS
1 stop25h 13mUnited Airlines
Deal found 11/3$441
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/61:30 amPOS - IAD
1 stop20h 21mUnited Airlines
Tue 11/116:00 amIAD - POS
1 stop17h 23mUnited Airlines
Deal found 11/4$444
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 12/246:02 amPOS - IAD
2 stops32h 25mAmerican Airlines
Tue 1/65:46 pmIAD - POS
2 stops20h 39mAmerican Airlines
Deal found 11/4$445
This American Airlines deal was found by Cheapflights users on 11/4. 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 11/94:30 pmPOS - IAD
2 stops18h 49mAmerican Airlines
Wed 11/192:16 pmIAD - POS
2 stops24h 14mAmerican Airlines
Deal found 11/4$454

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 November 5, 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

Tue 3/3

1:30 am-10:16 pm

1 stop21h 46m

Washington, D.C. Dulles Intl

Sun 3/8

10:06 pm-11:23 pm

1 stop25h 17m

$406

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Tue 2/10

1:30 am-11:23 am

1 stop10h 53m

Washington, D.C. Dulles Intl

Fri 2/20

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Fri 2/13

1:30 am-11:26 am

1 stop10h 56m

Washington, D.C. Dulles Intl

Tue 2/24

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 2/9

1:30 am-11:23 am

1 stop10h 53m

Washington, D.C. Dulles Intl

Tue 2/24

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 2/9

1:30 am-11:23 am

1 stop10h 53m

Washington, D.C. Dulles Intl

Sun 2/22

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Sat 2/14

1:30 am-11:21 am

1 stop10h 51m

Washington, D.C. Dulles Intl

Mon 2/23

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Thu 2/12

1:30 am-11:21 am

1 stop10h 51m

Washington, D.C. Dulles Intl

Wed 2/18

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Sat 2/14

1:30 am-11:21 am

1 stop10h 51m

Washington, D.C. Dulles Intl

Tue 2/24

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 2/9

1:30 am-11:23 am

1 stop10h 53m

Washington, D.C. Dulles Intl

Fri 2/20

12:50 pm-12:23 am

1 stop10h 33m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Thu 11/27

2:15 am-3:46 pm

1 stop14h 31m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 20 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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Port of Spain-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 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 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 November 5, 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.

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 November 5, 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
1,561 reviews

Food

6.9

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

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
1,561 reviews
Copa Airlines
7.6
Good
1,561 reviews

Food

6.9

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

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
9,000 reviews
Copa Airlines
7.6
Good
1,561 reviews

Food

6.9

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

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 21h 46m. Fly via United Airlines to get the fastest option. There are 2195 mi between Port of Spain and Washington, D.C. Dulles Intl Airport.

  • 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
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

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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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$335Average$409FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$395Average$478FlexibilityNo cancel feeOn-time69%

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