IAD - POS

$173 Find Cheap Flights from Washington Dulles Airport to Port of Spain

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Port of Spain departing on 10/21. 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 Port of Spain

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Port of Spain 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 Dulles Intl to Port of Spain

Tue, Oct 21 - Mon, Oct 27
Copa Airlines Logo
2:25 am - 1:17 pmIAD-POS
10h 52m1 stop
Copa Airlines Logo
3:51 am - 3:05 pmPOS-IAD
11h 14m1 stop
$352Copa Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Copa Airlines Logo
9:34 am - 1:46 amIAD-POS
16h 12m1 stop
Copa Airlines Logo
3:51 am - 3:05 pmPOS-IAD
11h 14m1 stop
$372Copa Airlines
Find Deal
Wed, Sep 3 - Tue, Sep 9
United Airlines Logo
12:50 pm - 11:23 pmIAD-POS
10h 33m1 stop
United Airlines Logo
12:30 am - 7:13 pmPOS-IAD
18h 43m1 stop
$378United Airlines
Find Deal
Tue, Sep 23 - Wed, Oct 22
American Airlines Logo
7:21 pm - 2:16 pmIAD-POS
18h 55m2 stops
American Airlines Logo
7:00 am - 6:51 pmPOS-IAD
11h 51m2 stops
$383American Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
American Airlines Logo
7:21 pm - 2:16 pmIAD-POS
18h 55m2 stops
American Airlines Logo
3:25 pm - 10:07 amPOS-IAD
18h 42m2 stops
$388American Airlines
Find Deal
Sun, Sep 21 - Mon, Sep 22
United Airlines Logo
6:00 am - 11:23 pmIAD-POS
17h 23m1 stop
United Airlines Logo
12:30 am - 3:03 pmPOS-IAD
14h 33m1 stop
$408United Airlines
Find Deal
Sun, Sep 21 - Fri, Oct 10
Air Canada Logo
9:35 am - 1:20 amIAD-POS
15h 45m2 stops
Air Canada Logo
2:25 am - 1:38 pmPOS-IAD
11h 13m1 stop
$437Air Canada
Find Deal
Sun, Oct 12 - Thu, Oct 30
Air Canada Logo
2:25 pm - 1:20 amIAD-POS
10h 55m1 stop
Air Canada Logo
1:15 am - 8:59 pmPOS-IAD
43h 44m2 stops
$447Air Canada
Find Deal
Thu, Sep 18 - Tue, Sep 23
 Logo
9:35 am - 1:20 amIAD-POS
39h 45m2 stops
 Logo
8:30 am - 9:38 amPOS-IAD
25h 08m3 stops
Thu, Sep 18 - Tue, Sep 23
 Logo
9:35 am - 1:20 amIAD-POS
39h 45m2 stops
 Logo
8:30 am - 9:38 amPOS-IAD
25h 08m3 stops
Booking Insights

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

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

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Port of Spain?

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

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

If you are looking for a flight deal from Washington Dulles Airport to Port of Spain, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Port of Spain, Thursday is the cheapest day to fly and Monday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Port of Spain, 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 Washington, D.C. Dulles Intl Airport to Port of Spain is November, where tickets cost $364 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $931 and $863 respectively.

Good to know

Low seasonApril
Cheapest flight$173
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Washington Dulles Airport to Port of Spain

When to book flights from Dulles Intl to Port of Spain

Are your dates flexible? Find out the best times to travel from Dulles Intl to Port of Spain 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 Washington Dulles Airport to Port of Spain flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Port of Spain was $173 for a one-way ticket and $352 for a round-trip.

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

    Yes, you’ll need a passport to travel to Port of Spain from Washington Dulles Airport.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Port of Spain are Copa Airlines and United Airlines. With an average price for the route of $545 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 $587 and an overall rating of 7.4.

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

    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 Washington Dulles Airport to Port of Spain.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Port of Spain from Washington Dulles Airport 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 Washington Dulles Airport to Port of Spain?

    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 Port of Spain with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and POS 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 Washington Dulles Airport to Port of Spain?

    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 Port of Spain from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Dulles Intl to Port of Spain

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Port of Spain. 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 Dulles Intl to Port of Spain? 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
7.8Boarding
6.8Food
8.1Crew
6.8Entertainment
Airline reviews

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

8.0 ExcellentManuel, Jul 2025ORD - PTY
Read more Copa Airlines reviews

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.

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.

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.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

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.

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?!

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

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

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