POS - IAD

$233 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 8/25. 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

Fri, Oct 17 - Fri, Oct 31
Copa Airlines Logo
2:39 pm - 12:31 amPOS-IAD
9h 52m1 stop
Copa Airlines Logo
2:18 am - 1:16 pmIAD-POS
10h 58m1 stop
$390Copa Airlines
Find Deal
Mon, Aug 11 - Tue, Aug 19
United Airlines Logo
12:30 am - 10:18 pmPOS-IAD
21h 48m1 stop
United Airlines Logo
8:35 am - 11:23 pmIAD-POS
14h 48m1 stop
$406United Airlines
Find Deal
Sun, Oct 26 - Mon, Nov 10
United Airlines Logo
12:30 am - 11:28 amPOS-IAD
10h 58m1 stop
United Airlines Logo
8:30 am - 12:23 amIAD-POS
14h 53m1 stop
$407United Airlines
Find Deal
Tue, Aug 12 - Tue, Aug 19
United Airlines Logo
12:30 am - 11:58 pmPOS-IAD
23h 28m1 stop
United Airlines Logo
8:35 am - 11:23 pmIAD-POS
14h 48m1 stop
$408United Airlines
Find Deal
Fri, Oct 17 - Sat, Nov 1
American Airlines Logo
3:20 pm - 12:49 pmPOS-IAD
21h 29m2 stops
American Airlines Logo
5:06 am - 9:25 pmIAD-POS
16h 19m2 stops
$414American Airlines
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Tue, Jun 24 - Sun, Aug 3
United Airlines Logo
12:30 am - 4:22 pmPOS-IAD
15h 52m1 stop
United Airlines Logo
10:32 pm - 11:23 pmIAD-POS
24h 51m1 stop
$425United Airlines
Find Deal
Fri, Oct 17 - Sat, Nov 1
Copa Airlines Logo
2:39 pm - 4:22 amPOS-IAD
13h 43m1 stop
Copa Airlines Logo
4:31 pm - 1:43 amIAD-POS
9h 12m1 stop
$427Copa Airlines
Find Deal
Mon, Jul 14 - Mon, Jul 28
Air Canada Logo
2:20 am - 2:19 pmPOS-IAD
11h 59m1 stop
Air Canada Logo
3:40 pm - 1:20 amIAD-POS
9h 40m1 stop
$437Air Canada
Find Deal
Mon, Aug 11 - Mon, Aug 18
Air Canada Logo
2:20 am - 9:01 pmPOS-IAD
18h 41m2 stops
Air Canada Logo
10:25 am - 1:20 amIAD-POS
14h 55m1 stop
$447Air Canada
Find Deal
Mon, Oct 27 - Sun, Nov 9
American Airlines Logo
3:20 pm - 12:49 pmPOS-IAD
21h 29m2 stops
American Airlines Logo
8:50 am - 2:55 pmIAD-POS
29h 05m2 stops
$472American Airlines
Find Deal
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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 $877 and $821 respectively.

Good to know

Low seasonFebruary
High seasonDecember
Cheapest flight$233
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 6% 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 $233 for a one-way ticket and $390 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 $499 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 $495 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.

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 1451 reviews
6.8Entertainment
7.8Boarding
7.4Comfort
6.8Food
8.1Crew
Airline reviews

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.

2.0 MediocrePaul, Jun 2025PTY - MIA
Read more Copa Airlines reviews

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.

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

The flight was delayed twice and I could not speak with anyone at the airport about checking in. The phone number to Copa - the customer service agents were polite. They are just limited at helping because they are not at the airport

We were in transit from Lima (flight at 1.10am) and we were in stand by in our flight from Panama to Washington. We wait from 4.30 am to 18.30pm in the Airport. The company give us 2 x 15 dollars for eat during the day and a personnal travel voucher of 400 dollars each. Do they buy food one time something in the Airport ??? And one of us live in France so the voucher is not usable. More than 24 hours travel !! And our place were near the toilets, with 8 children around us. The boy behind my seat stamped his feet on my back all the flight. Really Wonder full ! So we are totally unhappy with our travel. Thanks Copa Airlines....

It would have been better if they don't separate families in seating. We were seated in the aile row in the middle of a family of four. It would have been better if they they seat the family of four together than separated.

I upgraded myself to Business Class at the last minute so I had a DREAMS window seat. Seeing as I've never flown Business before everything was novel and fun for me and it made the 7 hour flight much more enjoyable for sure.

No headphones given for inflight entertainment. I missed my flight from the previous day and the customer service agent tried to extort an additional $100.00 US from me for missing my flight. Really?!

It was reasonably comfortable trip considering its duration (7 hours). Crew was very good and friendly, seats very more comfortable than other planes. Only negative comment would be that the bathroom light did not get its full brightness 🙃

The flight was delayed about 4 hours without any explanation. No wifi or entertainment at all on planes. Had to pay for checked bags I was allowed according to reservations.

It was good, plane is a bit older so seats are somewhat flat

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.

United left one of our bags back in SFO but that’s not my real complaint. The complaint is how it all went down. So we checked in the day before online and were told we could use the quick drop for luggage. So the next day I used baggage quick drop curbside at SFO. The agent mistakenly didn't tag my bag as he put my bag on the conveyor belt untagged. We immediately alerted him he had not tagged the bag. I walked with him to the baggage service office to find my bag and tag it. We waited outside the office for 10 mins. He came out and said everything was ok and the bag was going to be tagged and on my flight. We received a text that one of our bags was on the flight but the other was not. I alerted my first class flight attendant immediately upon boarding the flight. She was helpful and said she’d get it sorted out right away. She called over the gate agent. The gate agent used my bag number and looked over information on her device. She said my bag was on the flight. The flight attendant was standing with her, looking at the device, and also said “yep it’s on the flight”. During the flight the flight attendant made reference to how reassuring it must feel knowing the bag was on the flight. Upon arriving to IAD we received a text that my bag was not on my flight. The text said my bag would arrive to my final destination LIS 24 hrs late. I understand that mistakes happen. I was totally ok with my bag mistakenly not getting tagged at the quick drop. I was fine with walking down to baggage services to tag my bag. But, what I am not ok with is that the United staff said they fixed the mistake two different times, assuring me twice that my bag would be/was on the plane…and it wasn’t. I expected better attention by the employees, for them to do what they said they were going to do. We also spent extra money to upgrade our seats to first class, including the entire return leg from Lisbon to San Francisco because we wanted a smoother and more relaxing travel experience. Our money was not well spent. We will not be using United for travel going forward.

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Horrifying! And I am almost 2 million miles with United. Late by 3 1/2 hours. Worst: after two hours on the plane waiting, they decided that one of the tires had been damaged and then decided to change it. Another hour and a half to change the tire!!!!! NO EXCUSE FOR THIS. The crew didn't even offer a glass of water until we had been on the plane for FIVE hours. This is the worst airline in the world. I'm simply stuck because they fly on the only routes I need.

Gate got changed about 4 times. Very confusing and very crowded. If you don’t have wifi to help get updates, you can be in deep trouble.

Attendants zipped through cabin so fast hardly anyone got the water they told us we could have in the short flight. Nothing else was offered.

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

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

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

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