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Dulles Intl

$230+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
POS — IAD
jun. 23 — jun. 301
lun. 6/23
lun. 6/30
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 junio 18, 2025.

Round-trip from

$364
(Copa Airlines)

One-way from

$230
(Copa Airlines)

Popular in

August

Cheapest in

April

Average price

$741
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. 30% potential increase in price ($242 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 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 junio 18, 2025.

This Copa Airlines deal was found by Cheapflights users on 6/16. 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.
mié. 10/292:16 pmPOS - IAD
1 stop10h 17mCopa Airlines
vie. 11/71:18 amIAD - POS
1 stop10h 58mCopa Airlines
Deal found 6/16$364
This United Airlines deal was found by Cheapflights users on 6/18. 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.
mar. 10/2812:30 amPOS - IAD
1 stop23h 14mUnited Airlines
mar. 11/1112:55 pmIAD - POS
1 stop10h 28mUnited Airlines
Deal found 6/18$405
This American Airlines deal was found by Cheapflights users on 6/18. 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.
vie. 10/173:20 pmPOS - IAD
2 stops17h 22mAmerican Airlines
sáb. 11/18:09 pmIAD - POS
2 stops18h 46mAmerican Airlines
Deal found 6/18$414
This Air Canada deal was found by Cheapflights users on 6/17. 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.
dom. 10/192:25 amPOS - IAD
2 stops18h 40mAir Canada
lun. 10/279:55 amIAD - POS
2 stops15h 40mAir Canada
Deal found 6/17$430
This Gotogate deal was found by Cheapflights users on 6/18. 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.
dom. 10/510:25 amPOS - IAD
2 stops23h 13mMultiple Airlines
dom. 10/1910:20 amIAD - POS
1 stop15h 05mMultiple Airlines
Deal found 6/18$578

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 junio 18, 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

mié. 10/29

2:16 pm-12:33 am

1 stop10h 17m

Washington, D.C. Dulles Intl

vie. 11/7

1:18 am-1:16 pm

1 stop10h 58m

$364

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

mar. 10/28

12:30 am-11:44 pm

1 stop23h 14m

Washington, D.C. Dulles Intl

mar. 11/11

12:55 pm-12:23 am

1 stop10h 28m

$405

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

vie. 10/17

3:20 pm-8:42 am

2 stops17h 22m

Washington, D.C. Dulles Intl

sáb. 11/1

8:09 pm-2:55 pm

2 stops18h 46m

$414

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

dom. 10/19

2:25 am-9:05 pm

2 stops18h 40m

Washington, D.C. Dulles Intl

lun. 10/27

9:55 am-1:35 am

2 stops15h 40m

$430

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

dom. 10/5

10:25 am-9:38 am

2 stops23h 13m

Washington, D.C. Dulles Intl

dom. 10/19

10:20 am-1:25 am

1 stop15h 05m

$578

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

dom. 10/19

3:50 am-3:06 pm

1 stop11h 16m

$230

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

dom. 10/19

2:25 am-9:05 pm

2 stops18h 40m

$241

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

sáb. 10/4

12:30 am-11:51 pm

1 stop23h 21m

$267

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

lun. 10/20

3:20 pm-12:49 pm

2 stops21h 29m

$273

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

dom. 10/5

6:25 pm-2:15 pm

1 stop19h 50m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

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, August is the cheapest month in which you can book a flight from Port of Spain to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Port of Spain to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $347). 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 junio 18, 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 22% on the flight price compared to flying in the evening, which is usually more expensive.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 junio 18, 2025.
Read reviews from past customers who have flown Copa Airlines, United Airlines and American Airlines from Port of Spain to Washington, D.C.. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.5
Good
1,455 reviews

Entertainment

6.8

Comfort

7.4

Food

6.8

Boarding

7.8

Crew

8.1

Overall

7.5

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
Copa Airlines
7.5
Good
1,455 reviews
Copa Airlines
7.5
Good
1,455 reviews

Entertainment

6.8

Comfort

7.4

Food

6.8

Boarding

7.8

Crew

8.1

Overall

7.5

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
United Airlines
7.4
Good
8,810 reviews
Copa Airlines
7.5
Good
1,455 reviews

Entertainment

6.8

Comfort

7.4

Food

6.8

Boarding

7.8

Crew

8.1

Overall

7.5

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
American Airlines
7.2
Good
10,000 reviews
Copa Airlines
7.5
Good
1,455 reviews

Entertainment

6.8

Comfort

7.4

Food

6.8

Boarding

7.8

Crew

8.1

Overall

7.5

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
Air Canada
7.1
Good
9,572 reviews
Copa Airlines
7.5
Good
1,455 reviews

Entertainment

6.8

Comfort

7.4

Food

6.8

Boarding

7.8

Crew

8.1

Overall

7.5

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.

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. 3 airlines have flights to Washington, D.C. Dulles Intl from Port of Spain Piarco Intl on a regular basis.

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

    Currently priced at $364, 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. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $405 and $414, respectively. Copa Airlines is priced at 32% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Port of Spain to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is Copa Airlines, with whom users have recently found tickets for as low as $230. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Port of Spain to Washington, D.C. Dulles Intl Airport for a low price.

  • 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, August is the cheapest month in which you can book a flight from Port of Spain to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Port of Spain to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $347). 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 Port of Spain?

Book flights to Port of Spain if you plan to visit one of these locations
Arlington
Woodbridge
Alexandria
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Fairfax
Gaithersburg
Easton
Towson
Manassas
Falls Church
Rockville
Springfield
National Harbor
Dundalk
Waldorf
Bowie
Hanover

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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 3 airlines flying from Port of Spain to Dulles Intl

Discover the top 3 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 junio 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$335Average$496FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$395Average$495FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$424Average$648FlexibilityNo cancel feeOn-time71%

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