Cheap Flights from Portsmouth to Washington Dulles Intl from £554

How to find the cheapest flight from
Portsmouth to Washington Dulles Intl (IAD)

All the information you need to plan the best null to IAD flight in 2021: compare Portsmouth to Washington Dulles Intl flight prices with the expected peak season, weather and rainfall in Washington Dulles Intl.

How far in advance should I book a flight from Portsmouth to Washington Dulles Intl?

Travellers have found it’s best to book a flight 34 days in advance to save up to 27% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 34 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portsmouth to Washington Dulles Intl 1-2 weeks in advance for as low as £532, or £621 for flights within the next 24 hours.

What is the cheapest month to fly from Portsmouth to Washington Dulles Intl?

February is one of the best times of the year to fly to Washington Dulles Intl from Portsmouth. Prices for February average £487 per person but you can even find prices for as low as £326. The most expensive prices can be found in the month of July. Opting for a February flight can save you 21% on your journey compared to booking in February

Portsmouth to Washington Dulles Intl 2021 flight deals

Cheap flights to Washington Dulles Intl from Portsmouth found for this year

10 Nov - 14 Nov

£554pp

SOU

Southampton Eastleigh

Delta

1 STOP

IAD

Washington Dulles Intl

IAD

Washington Dulles Intl

Delta

2 STOPS

SOU

Southampton Eastleigh

17 Nov - 21 Nov

£577pp

SOU

Southampton Eastleigh

KLM

1 STOP

IAD

Washington Dulles Intl

IAD

Washington Dulles Intl

KLM

1 STOP

SOU

Southampton Eastleigh

10 Nov - 14 Nov

£581pp

SOU

Southampton Eastleigh

KLM

1 STOP

IAD

Washington Dulles Intl

IAD

Washington Dulles Intl

KLM

1 STOP

SOU

Southampton Eastleigh

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Portsmouth</span> to <span class="emphasized">Washington Dulles Intl</span> flights.

Flight FAQs

From Portsmouth to Washington Dulles Intl

Are flight prices decreasing from Portsmouth to Washington Dulles Intl due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Portsmouth and Washington Dulles Intl for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Portsmouth to Washington Dulles Intl for under £581 on Cheapflights?

Yes, there are multiple flights from Portsmouth to Washington Dulles Intl for under £581. The cheapest flight booked recently is on Delta for just £554, but on average you can expect to pay £832.

Are there direct flights from Portsmouth to Washington Dulles Intl for under £581 on Cheapflights?

There are no direct flights from Portsmouth to Washington Dulles Intl, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Is Portsmouth weather warmer or cooler than Washington Dulles Intl?

With an average temperature of 31 °C, peak weather can be found in July. As a traveller, expect to see changes in flight prices during that period. The temperatures in Washington Dulles Intl are hotter than in Portsmouth.

What are the most popular airlines that fly from Portsmouth to Washington Dulles Intl?

When booking a flight from Portsmouth to Washington Dulles Intl, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

What are the cheapest flights from Portsmouth to Washington Dulles Intl?

On average you can expect to pay £828 for a flight from Portsmouth to Washington Dulles Intl. The cheapest flight overall is £268 while the most popular route, (Southampton Eastleigh - Washington Dulles Intl) is currently priced at £554.

What are the most reliable airlines from Portsmouth to Washington Dulles Intl?

Before booking your flight to Washington Dulles Intl from Portsmouth, have a look at the most reliable airlines to get you to your destination on time: Air Canada (97%), Austrian Airlines (97%), Copa Airlines( 97%).

How long does is the flight from Portsmouth to Washington Dulles Intl?

A quick flight from Portsmouth to Washington Dulles Intl can take about 11h 55m. Delta provides one of the quickest options available for as low as £554.

What are the cheapest airlines to flying from Portsmouth to Washington Dulles Intl return?

Flying on Delta is currently your cheapest option to Washington Dulles Intl, with prices starting at £554. Another option worth looking into is KLM, starting at £577 return.

Hire a Car

Car Rentals at Washington Dulles Intl Car Rentals in USA

Alternative routes for Portsmouth to Washington Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Bristol to Washington from £579 pp

Doncaster to Washington from £621 pp

Birmingham to Washington from £681 pp

Destination information for Washington Dulles Intl

Things to know before you go - useful duration and weather info for your trip from Portsmouth to Washington Dulles Intl.

£1 = $1.38

31.0 °C

106.0 mm

Airports servicing Portsmouth

Southampton (SOU)

Airports servicing Washington

Washington Dulles Intl (IAD)

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
TAP AIR PORTUGAL	£420	£585	No cancel fee	N/A		Search TAP AIR PORTUGAL flights
Air Canada	£394	£653	No cancel fee	67%		Search Air Canada flights
SAS	£414	£725	No cancel fee	77%		Search SAS flights
Royal Air Maroc	£688	£751	No cancel fee	75%	We couldn't confirm the COVID-19 safety measures taken by Royal Air Maroc. Please check directly on their website for additional information.	Search Royal Air Maroc flights
American Airlines	£477	£758	No cancel fee	71%		Search American Airlines flights
SWISS	£645	£775	No cancel fee	79%		Search SWISS flights
Brussels Airlines	£479	£779	No cancel fee	N/A		Search Brussels Airlines flights
Finnair	£500	£815	No cancel fee	76%		Search Finnair flights
Delta	£458	£870	No cancel fee	N/A		Search Delta flights
Air France	£469	£878	No cancel fee	77%		Search Air France flights

Hourly flight availability from Portsmouth to Washington Dulles Intl

See what time of day planes typically take off from Portsmouth towards Washington Dulles Intl.

Morning 6 AM to midday	54% of flight departures
Afternoon Midday to 6 PM	45% of flight departures
Early morning Midnight to 6 AM	1% of flight departures
Evening 6 PM to midnight	0% of flight departures

Midnight

6 AM

Noon

6 PM

Cheap flights from Portsmouth to Washington Dulles Intl

How to find the cheapest flight from
Portsmouth to Washington Dulles Intl (IAD)

All the information you need to plan the best null to IAD flight in 2021: compare Portsmouth to Washington Dulles Intl flight prices with the expected peak season, weather and rainfall in Washington Dulles Intl.

How far in advance should I book a flight from Portsmouth to Washington Dulles Intl?

What is the cheapest month to fly from Portsmouth to Washington Dulles Intl?

Portsmouth to Washington Dulles Intl 2021 flight deals

Cheap flights to Washington Dulles Intl from Portsmouth found for this year