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 $396. Copa Airlines is priced at 37% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from Port of Spain to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Port of Spain to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Washington, D.C. Dulles Intl Airport. Flights to Washington, D.C. Dulles Intl Airport from Port of Spain in February are about $501 on average during February, but can be found for as low as $324.

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.

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.

$230+ Cheap Flights from Port of Spain to Washington, D.C. Dulles Intl Airport

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

Airfare is below average for this route at the moment. Port of Spain to Washington, D.C. Dulles Intl Airport flights typically cost between $882 and $1,083 in September. The cheapest round-trip price found within the last 3 days was $382 on Copa Airlines (Sep 30-Oct 15).

Q: What is the cheapest day to fly round-trip from Port of Spain to Washington, D.C. Dulles Intl Airport?

It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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Cheap flight deals from Port of Spain to Dulles Intl

Round-trip from	$382 (Copa Airlines)
One-way from	$230 (Copa Airlines)
Popular in	August
Cheapest in	April
Average price	$1,059

From Port of Spain Piarco Intl to Washington, D.C. Dulles Intl

Search Deals

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. 35% potential increase in price ($290 potential increase over avg. RT price).

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Cheapest flight prices on average. 9% potential price decrease ($48 potential savings vs. average RT price).

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Average for round-trip flights in August 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 August 14, 2025.

Mon 9/153:51 amPOS - IAD

1 stop11h 14mCopa Airlines

Tue 11/41:13 amIAD - POS

1 stop11h 04mCopa Airlines

Deal found 8/12

$382

Wed 10/12:40 pmPOS - IAD

1 stop13h 40mCopa Airlines

Wed 10/159:34 amIAD - POS

1 stop16h 12mCopa Airlines

Deal found 8/12

$398

Thu 9/2512:30 amPOS - IAD

1 stop23h 21mUnited Airlines

Fri 10/36:01 amIAD - POS

1 stop17h 22mUnited Airlines

Deal found 8/12

$407

Wed 10/112:30 amPOS - IAD

1 stop18h 33mUnited Airlines

Mon 10/66:01 amIAD - POS

1 stop17h 22mUnited Airlines

Deal found 8/14

$410

Thu 9/253:51 amPOS - IAD

1 stop11h 14mCopa Airlines

Thu 10/22:25 amIAD - POS

1 stop10h 52mCopa Airlines

Deal found 8/12

$413

Tue 9/163:25 pmPOS - IAD

2 stops18h 42mAmerican Airlines

Wed 11/511:25 amIAD - POS

2 stops11h 11mAmerican Airlines

Deal found 8/12

$414

Tue 8/2612:30 amPOS - IAD

1 stop20h 22mUnited Airlines

Tue 9/1612:50 pmIAD - POS

1 stop10h 33mUnited Airlines

Deal found 8/12

$418

Mon 9/112:30 amPOS - IAD

1 stop20h 22mUnited Airlines

Wed 10/110:18 pmIAD - POS

1 stop25h 05mUnited Airlines

Deal found 8/12

$424

Tue 12/231:30 amPOS - IAD

1 stop23h 19mUnited Airlines

Mon 12/2910:15 pmIAD - POS

1 stop25h 08mUnited Airlines

Deal found 8/14

$426

Fri 9/263:25 pmPOS - IAD

2 stops18h 42mAmerican Airlines

Fri 10/32:21 pmIAD - POS

2 stops23h 55mAmerican Airlines

Deal found 8/12

$428

Wed 8/273:35 pmPOS - IAD

2 stops21h 13mAmerican Airlines

Tue 9/1611:18 amIAD - POS

2 stops26h 58mAmerican Airlines

Deal found 8/12

$431

Tue 8/193:35 pmPOS - IAD

2 stops18h 18mAmerican Airlines

Thu 9/47:21 pmIAD - POS

2 stops18h 55mAmerican Airlines

Deal found 8/14

$448

Best flights from Port of Spain to Dulles Intl
Discover carefully curated flight deals from Port of Spain to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Mon 9/153:51 amPOS - IAD

1 stop11h 14mCopa Airlines

Wed 11/58:22 amIAD - POS

1 stop16h 26mCopa Airlines

Deal found 8/12

$382

Wed 10/112:30 amPOS - IAD

1 stop23h 21mUnited Airlines

Tue 11/46:00 amIAD - POS

1 stop17h 23mUnited Airlines

Deal found 8/13

$407

Tue 9/303:51 amPOS - IAD

1 stop11h 14mCopa Airlines

Wed 10/154:34 pmIAD - POS

1 stop9h 12mCopa Airlines

Deal found 8/13

$382

Tue 9/3012:30 amPOS - IAD

1 stop21h 36mUnited Airlines

Tue 11/48:30 amIAD - POS

1 stop14h 53mUnited Airlines

Deal found 8/13

$407

Mon 10/612:30 amPOS - IAD

1 stop18h 33mUnited Airlines

Tue 11/46:00 amIAD - POS

1 stop17h 23mUnited Airlines

Deal found 8/13

$407

Fri 12/121:30 amPOS - IAD

1 stop20h 13mUnited Airlines

Sun 1/410:15 pmIAD - POS

1 stop25h 08mUnited Airlines

Deal found 8/12

$407

Sat 10/412:30 amPOS - IAD

1 stop23h 21mUnited Airlines

Tue 11/46:00 amIAD - POS

1 stop17h 23mUnited Airlines

Deal found 8/13

$407

Sun 10/512:30 amPOS - IAD

1 stop20h 29mUnited Airlines

Tue 11/46:00 amIAD - POS

1 stop17h 23mUnited Airlines

Deal found 8/13

$407

Last-minute flights from Port of Spain to Dulles Intl
Discover last-minute flight deals from Port of Spain to Dulles Intl. Data last updated August 14, 2025 and is based on user searches.

Tue 8/193:35 pmPOS - IAD

2 stops18h 18mAmerican Airlines

Thu 9/47:21 pmIAD - POS

2 stops18h 55mAmerican Airlines

Deal found 8/14

$448

Tue 8/1912:30 amPOS - IAD

1 stop14h 18mUnited Airlines

Sat 10/410:18 pmIAD - POS

1 stop25h 05mUnited Airlines

Deal found 8/13

$513

Tue 8/1912:30 amPOS - IAD

1 stop14h 18mUnited Airlines

Wed 9/311:03 amIAD - POS

1 stop12h 20mUnited Airlines

Deal found 8/13

$531

Tue 8/1912:30 amPOS - IAD

1 stop14h 18mUnited Airlines

Wed 10/110:45 amIAD - POS

1 stop12h 38mUnited Airlines

Deal found 8/12

$601

Wed 8/203:35 pmPOS - IAD

2 stops17h 07mAmerican Airlines

Wed 10/17:21 pmIAD - POS

2 stops18h 55mAmerican Airlines

Deal found 8/12

$519

Wed 8/203:35 pmPOS - IAD

2 stops21h 13mAmerican Airlines

Sat 10/47:17 pmIAD - POS

2 stops18h 59mAmerican Airlines

Deal found 8/13

$536

Fri 8/2212:30 amPOS - IAD

1 stop21h 30mUnited Airlines

Wed 9/310:05 pmIAD - POS

1 stop25h 18mUnited Airlines

Deal found 8/13

$618

Fri 8/223:49 amPOS - IAD

2 stops15h 35mMultiple Airlines

Tue 9/22:25 amIAD - POS

1 stop23h 21mMultiple Airlines

Deal found 8/13

$627

Sun 8/2412:30 amPOS - IAD

1 stop20h 22mUnited Airlines

Fri 8/293:55 pmIAD - POS

1 stop31h 28mUnited Airlines

Deal found 8/12

$728

Tue 8/2612:30 amPOS - IAD

1 stop20h 22mUnited Airlines

Tue 9/1612:50 pmIAD - POS

1 stop10h 33mUnited Airlines

Deal found 8/12

$418

Wed 8/273:35 pmPOS - IAD

2 stops21h 13mAmerican Airlines

Tue 9/1611:18 amIAD - POS

2 stops26h 58mAmerican Airlines

Deal found 8/12

$431

Mon 9/112:30 amPOS - IAD

1 stop20h 22mUnited Airlines

Wed 10/110:18 pmIAD - POS

1 stop25h 05mUnited Airlines

Deal found 8/12

$424

One-way flights from Port of Spain to Dulles Intl
Search for one-way flight options from Port of Spain to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 14, 2025.

Mon 9/153:51 amPOS - IAD

1 stop11h 14mCopa Airlines

Deal found 8/12

$230

Sun 10/53:51 amPOS - IAD

1 stop11h 14mCopa Airlines

Deal found 8/11

$231

Mon 11/32:26 pmPOS - IAD

1 stop10h 07mCopa Airlines

Deal found 8/14

$232

Mon 11/103:48 amPOS - IAD

1 stop11h 16mCopa Airlines

Deal found 8/13

$247

Sun 11/27:40 amPOS - IAD

2 stops12h 01mMultiple Airlines

Deal found 8/13

$252

Mon 9/152:25 amPOS - IAD

2 stops18h 40mAir Canada

Deal found 8/12

$254

Sun 11/22:15 amPOS - IAD

2 stops43h 44mAir Canada

Deal found 8/14

$259

Tue 11/41:30 amPOS - IAD

1 stop15h 46mUnited Airlines

Deal found 8/14

$268

Tue 9/163:25 pmPOS - IAD

2 stops18h 42mAmerican Airlines

Deal found 8/12

$273

Thu 9/412:30 amPOS - IAD

1 stop23h 25mUnited Airlines

Deal found 8/11

$276

Wed 8/273:49 amPOS - IAD

1 stop11h 14mCopa Airlines

Deal found 8/12

$277

Fri 9/53:25 pmPOS - IAD

2 stops18h 42mAmerican Airlines

Deal found 8/11

$281

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 9/15

3:51 am-3:05 pm

1 stop11h 14m

Washington, D.C. Dulles Intl

Wed 11/5

8:22 am-1:48 am

1 stop16h 26m

$382

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Tue 9/30

3:51 am-3:05 pm

1 stop11h 14m

Washington, D.C. Dulles Intl

Wed 10/15

4:34 pm-1:46 am

1 stop9h 12m

$382

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Wed 10/1

12:30 am-11:51 pm

1 stop23h 21m

Washington, D.C. Dulles Intl

Tue 11/4

6:00 am-12:23 am

1 stop17h 23m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Tue 9/30

12:30 am-10:06 pm

1 stop21h 36m

Washington, D.C. Dulles Intl

Tue 11/4

8:30 am-12:23 am

1 stop14h 53m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 10/6

12:30 am-7:03 pm

1 stop18h 33m

Washington, D.C. Dulles Intl

Tue 11/4

6:00 am-12:23 am

1 stop17h 23m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Fri 12/12

1:30 am-8:43 pm

1 stop20h 13m

Washington, D.C. Dulles Intl

Sun 1/4

10:15 pm-12:23 am

1 stop25h 08m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Sat 10/4

12:30 am-11:51 pm

1 stop23h 21m

Washington, D.C. Dulles Intl

Tue 11/4

6:00 am-12:23 am

1 stop17h 23m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Sun 10/5

12:30 am-8:59 pm

1 stop20h 29m

Washington, D.C. Dulles Intl

Tue 11/4

6:00 am-12:23 am

1 stop17h 23m

$407

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Mon 9/15

3:51 am-3:05 pm

1 stop11h 14m

$230

Port of SpainWashington, D.C.

POS - IAD

POSIAD

Port of Spain Piarco Intl

Sun 10/5

3:51 am-3:05 pm

1 stop11h 14m

$231

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 19 results

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, July is the cheapest month in which you can book a flight from Port of Spain to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Port of Spain to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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?

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.

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

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

7.5

Good

1,509 reviews

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

1,509 reviews

Copa Airlines

7.5

Good

1,509 reviews

Reviews

1 / 20

4.0

Okay

Paul,Jun 2025

PTY - MIA

United Airlines

7.4

Good

8,916 reviews

Copa Airlines

7.5

Good

1,509 reviews

Reviews

1 / 20

4.0

Okay

Paul,Jun 2025

PTY - MIA

Related info for your journey

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.
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 $396. Copa Airlines is priced at 37% 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, July is the cheapest month in which you can book a flight from Port of Spain to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Port of Spain to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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Top 2 airlines flying from Port of Spain to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Copa Airlines	Cheapest$335	Average$454	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$396	Average$436	FlexibilityNo cancel fee	On-time69%

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$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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.

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

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Find flight deals from Port of Spain to Dulles Intl

Cheapest flights from Port of Spain to Dulles IntlExplore 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 August 14, 2025.

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 August 14, 2025.

Cheapflights Fare Finder

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.

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.

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?

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 August 14, 2025.

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

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?

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

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

How can I 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?

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

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

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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.

Top 2 airlines flying from Port of Spain to Dulles Intl

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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 August 14, 2025.