POS - IAD

$230 Find Cheap Flights from Port of Spain to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Port of Spain to Dulles Intl departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Port of Spain to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Port of Spain to Washington, D.C., as well as popular online travel agencies
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Cheap Flights from Port of Spain to Dulles Intl (POS-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Port of Spain to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Port of Spain to Dulles Intl

Thu, Sep 11 - Sun, Sep 14
United Airlines Logo
12:30 am - 11:55 pmPOS-IAD
23h 25m1 stop
United Airlines Logo
6:00 am - 11:23 pmIAD-POS
17h 23m1 stop
$407United Airlines
Find Deal
Tue, Sep 30 - Wed, Oct 15
United Airlines Logo
12:30 am - 7:03 pmPOS-IAD
18h 33m1 stop
United Airlines Logo
10:45 am - 11:23 pmIAD-POS
12h 38m1 stop
$410United Airlines
Find Deal
Mon, Sep 22 - Wed, Oct 8
American Airlines Logo
3:25 pm - 10:07 amPOS-IAD
18h 42m2 stops
American Airlines Logo
8:09 am - 9:20 pmIAD-POS
13h 11m2 stops
$413American Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 16
American Airlines Logo
3:25 pm - 10:07 amPOS-IAD
18h 42m2 stops
American Airlines Logo
2:21 pm - 2:16 pmIAD-POS
23h 55m2 stops
$414American Airlines
Find Deal
Sun, Sep 21 - Wed, Oct 8
United Airlines Logo
12:30 am - 11:28 amPOS-IAD
10h 58m1 stop
United Airlines Logo
6:01 am - 11:23 pmIAD-POS
17h 22m1 stop
$416United Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 14
Copa Airlines Logo
3:51 am - 3:05 pmPOS-IAD
11h 14m1 stop
Copa Airlines Logo
2:25 am - 1:17 pmIAD-POS
10h 52m1 stop
$424Copa Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 15
Copa Airlines Logo
2:40 pm - 4:20 amPOS-IAD
13h 40m1 stop
Copa Airlines Logo
4:34 pm - 1:46 amIAD-POS
9h 12m1 stop
$440Copa Airlines
Find Deal
Mon, Sep 1 - Sun, Sep 7
Air Canada Logo
2:25 am - 1:38 pmPOS-IAD
11h 13m1 stop
Air Canada Logo
9:35 am - 1:20 amIAD-POS
15h 45m2 stops
$527Air Canada
Find Deal
Sun, Sep 21 - Wed, Oct 8
 Logo
2:25 am - 1:38 pmPOS-IAD
11h 13m1 stop
 Logo
5:40 pm - 8:00 pmIAD-POS
26h 20m3 stops
Fri, Sep 12 - Fri, Oct 3
 Logo
3:51 am - 4:20 amPOS-IAD
24h 29m1 stop
 Logo
2:25 am - 6:20 pmIAD-POS
15h 55m2 stops
Booking Insights

KAYAK's insights & trends for Port of Spain to Dulles Intl flights

Get data-powered insights and trends into flights from Port of Spain to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Port of Spain to Washington Dulles Airport?

The average price of all round-trip flights from Port of Spain to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

For Port of Spain to Washington Dulles Airport, Thursday is the cheapest day to fly on average and Monday is the most expensive. Flying from Washington Dulles Airport back to Port of Spain, the best deals are generally found on Tuesday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Port of Spain to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Port of Spain to Washington, D.C. Dulles Intl Airport is April, where tickets cost $336 (return) on average. On the other hand, the most expensive months are August and September, where the average cost of round-trip tickets is $1,051 and $821 respectively.

Good to know

Low seasonFebruary
Cheapest flight$230
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Port of Spain to Washington Dulles Airport

When to book flights from Port of Spain to Dulles Intl

Are your dates flexible? Find out the best times to travel from Port of Spain to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Port of Spain to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Port of Spain to Washington, D.C. Dulles Intl Airport was $230 for a one-way ticket and $407 for a round-trip.

  • Do I need a passport to fly between Port of Spain and Washington Dulles Airport?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Port of Spain and on arrival in Washington Dulles Airport.

  • Which airports will I be using when flying from Port of Spain to Washington Dulles Airport?

    When flying out of Port of Spain you will be using Port of Spain Piarco Intl. You will be landing at Washington Dulles Airport, also known as Washington, D.C. Dulles Intl.

  • Which aircraft models fly most regularly from Port of Spain to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Port of Spain to Washington Dulles Airport?

    Star Alliance, and oneworld are the airline alliances operating flights between Port of Spain and Washington Dulles Airport, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Port of Spain to Washington, D.C., Copa Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Port of Spain to Washington, D.C. are Copa Airlines and United Airlines. With an average price for the route of $456 and an overall rating of 7.5, Copa Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $485 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Port of Spain to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Port of Spain to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Port of Spain to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Port of Spain is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Port of Spain to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Port of Spain with another airline. Booking your flights between Port of Spain and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Port of Spain to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Port of Spain up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Port of Spain to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Port of Spain to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Port of Spain to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Copa AirlinesOverall score based on 1493 reviews
7.4Comfort
6.8Food
8.1Crew
6.8Entertainment
7.8Boarding
Airline reviews

horrible service, food was an embarrassment, no charging for cellphones, stay away

2.0 MediocreAnonymous, Jul 2025PTY - IAD
Read more Copa Airlines reviews

horrible service, food was an embarrassment, no charging for cellphones, stay away

Great experience with a crew always thinking in the passenger

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Had to go through security at the gate again. Had to take off shoes and go through the whole thing again even though we have global entry. They asked us to check in items bought at duty free during our layover and since we checked our luggage at the original departure airport, they forced us to check in a small backpack. None of this ever happened with other airlines. In addition, no vegetarian food option and no snacks during a 7 hr flight. Luggage limits are unusually small. This is unacceptable. Will NEVER fly Copa again and will tell friends and family to avoid this airline.

We paid extra with copa for seats near one another The plane was changed and we lost our seats We were all Separated. We have not received a refund for our seats despite emailing and calling.

We had a five hour layover in the way home from Colombia. I read the "bout your flight" email carefully before we checked bags. We had to go through security right at the gate. Almost lost our ground coffee because that airport only allows 16 ounce of coffee and we had 18. I've been to 48 countries and never heard of a coffee restriction. I can't follow a rule I don't know about. I requested they bring our coffee to our checked luggage. Instead tey gate checked our bag for free. Back to planning transfers in Dallas I guess

Tell people to remain in their seats during the meal/beverage distribution. Enforce boarding by group numbers. No one was checking. Tell people to turn their electronics speakers off. Bigger cups for drinks.

Enforce the boarding process by group numbers. Tell people to stay seated during the meal/drink distribution. It took forever to get food and drinks because people would not stay out the isle and let the crew do their jobs. Everyone wanted to go to the bathroom forcing the crew to enter and leave the isle constantly so people can pass. Tell people to keep their electronics off speaker mode. No one wants to hear phone conversations and music playing.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

Very nice and clean plane. Transit time between flights was tight though

Mostly the experience was good except for the flight changes made by UA which meant longer layover in DC

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Change cabin crew assisting business class. Not taking care, ignoring requests and calls. Never had such an experience in business class.

We had to turn around and head back to Manchester. Problem with a plane engine.

Flight was delayed. Staff at the gate effectively and proactively communicated about the delay.

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

Everything you need to know for your flight from Port of Spain to Dulles Intl

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