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Port of Spain

$173+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — POS
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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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 July 29, 2025.

Round-trip from

$419
(United Airlines)

One-way from

$173
(Copa Airlines)

Popular in

March

Cheapest in

November

Average price

$736
From Washington, D.C. Dulles Intl to Port of Spain Piarco Intl
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One-way flight from Washington, D.C. Dulles Intl to Port of Spain Piarco Intl
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Highest demand for flights based on searches. 14% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/27. 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 9/1811:03 amIAD - POS
1 stop12h 20mUnited Airlines
Thu 9/2512:30 amPOS - IAD
1 stop20h 30mUnited Airlines
Deal found 7/27$419
This Air Canada deal was found by Cheapflights users on 7/27. 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.
Sun 10/199:35 amIAD - POS
2 stops15h 45mAir Canada
Fri 10/311:15 amPOS - IAD
1 stop19h 14mAir Canada
Deal found 7/27$437
This Copa Airlines deal was found by Cheapflights users on 7/27. 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 11/181:13 amIAD - POS
1 stop11h 04mCopa Airlines
Fri 11/282:26 pmPOS - IAD
1 stop13h 56mCopa Airlines
Deal found 7/27$443
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Tue 9/307:21 pmIAD - POS
2 stops18h 55mAmerican Airlines
Mon 10/63:25 pmPOS - IAD
2 stops18h 30mAmerican Airlines
Deal found 7/28$448
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/114:34 pmIAD - POS
1 stop9h 12mMultiple Airlines
Thu 9/186:25 pmPOS - IAD
2 stops18h 30mMultiple Airlines
Deal found 7/27$526

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 July 29, 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

Thu 9/18

11:03 am-11:23 pm

1 stop12h 20m

Port of Spain Piarco Intl

Thu 9/25

12:30 am-9:00 pm

1 stop20h 30m

$419

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Sun 10/19

9:35 am-1:20 am

2 stops15h 45m

Port of Spain Piarco Intl

Fri 10/31

1:15 am-8:29 pm

1 stop19h 14m

$437

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Tue 9/30

7:21 pm-2:16 pm

2 stops18h 55m

Port of Spain Piarco Intl

Mon 10/6

3:25 pm-9:55 am

2 stops18h 30m

$448

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Mon 10/27

9:34 am-1:46 am

1 stop16h 12m

Port of Spain Piarco Intl

Mon 11/3

3:48 am-2:04 pm

1 stop11h 16m

$458

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Thu 9/11

4:34 pm-1:46 am

1 stop9h 12m

Port of Spain Piarco Intl

Thu 9/18

6:25 pm-12:55 pm

2 stops18h 30m

$526

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Tue 10/21

2:25 am-1:17 pm

1 stop10h 52m

$173

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Wed 10/22

8:09 am-2:25 pm

2 stops30h 16m

$208

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Sat 8/9

5:59 pm-6:10 pm

2 stops24h 11m

$333

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Mon 8/25

2:25 pm-1:25 am

1 stop11h 00m

$350

Washington, D.C.Port of Spain

IAD - POS

IADPOS

Washington, D.C. Dulles Intl

Wed 10/22

12:40 pm-11:23 pm

3 stops34h 43m

$1,369

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Port of Spain (average of $435). Flying from Washington, D.C. Dulles Intl Airport to Port of Spain in December is currently the most expensive (average of $710). 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 July 29, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 31% 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 July 29, 2025.
See what other customers who have flown with Copa Airlines, United Airlines, and American 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
7.5
Good
1,493 reviews

Entertainment

6.8

Boarding

7.8

Overall

7.5

Food

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
6.0
Good

Paul,May 2025

PTY - AUA

Had to use my phone for entertainment? Once we landed people were already out their seats and standing in the isles while the plane was still taxiing to the gate. This is unsafe and flight crew had a responsibility to ensure that people remain seated until the pilots turn off the seatbelt sign.
Copa Airlines
7.5
Good
1,493 reviews
Copa Airlines
7.5
Good
1,493 reviews

Entertainment

6.8

Boarding

7.8

Overall

7.5

Food

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
6.0
Good

Paul,May 2025

PTY - AUA

Had to use my phone for entertainment? Once we landed people were already out their seats and standing in the isles while the plane was still taxiing to the gate. This is unsafe and flight crew had a responsibility to ensure that people remain seated until the pilots turn off the seatbelt sign.
United Airlines
7.4
Good
8,893 reviews
Copa Airlines
7.5
Good
1,493 reviews

Entertainment

6.8

Boarding

7.8

Overall

7.5

Food

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
6.0
Good

Paul,May 2025

PTY - AUA

Had to use my phone for entertainment? Once we landed people were already out their seats and standing in the isles while the plane was still taxiing to the gate. This is unsafe and flight crew had a responsibility to ensure that people remain seated until the pilots turn off the seatbelt sign.
American Airlines
7.2
Good
10,000 reviews
Copa Airlines
7.5
Good
1,493 reviews

Entertainment

6.8

Boarding

7.8

Overall

7.5

Food

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
6.0
Good

Paul,May 2025

PTY - AUA

Had to use my phone for entertainment? Once we landed people were already out their seats and standing in the isles while the plane was still taxiing to the gate. This is unsafe and flight crew had a responsibility to ensure that people remain seated until the pilots turn off the seatbelt sign.
Air Canada
7.1
Good
9,822 reviews
Copa Airlines
7.5
Good
1,493 reviews

Entertainment

6.8

Boarding

7.8

Overall

7.5

Food

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
6.0
Good

Paul,May 2025

PTY - AUA

Had to use my phone for entertainment? Once we landed people were already out their seats and standing in the isles while the plane was still taxiing to the gate. This is unsafe and flight crew had a responsibility to ensure that people remain seated until the pilots turn off the seatbelt sign.

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.

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

    Currently priced at $419, United Airlines will fly you from Washington, D.C. Dulles Intl Airport to Port of Spain and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and American Airlines - these airlines can fly you to your destination from $437 and $448, respectively. United Airlines is 26% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Copa Airlines. According to our data, you can fly for as low as $173. Users have also found prices from $208 and $350 on American Airlines and Air Canada, respectively.

  • 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, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Port of Spain (average of $435). Flying from Washington, D.C. Dulles Intl Airport to Port of Spain in December is currently the most expensive (average of $710). 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

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Alternative routes for Dulles Intl to Port of Spain

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$312Average$545FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$368Average$587FlexibilityNo cancel feeOn-time69%

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