Cheap flights from Portsmouth to Washington Dulles Intl

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

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 £535, or £625 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 £489 per person but you can even find prices for as low as £327. 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

When is the cheapest time to fly from Portsmouth to Washington Dulles Intl (SOU - IAD)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Washington Dulles Intl as you normally would.

Portsmouth to Washington Dulles Intl 2021 flight deals

Cheap flights to Washington Dulles Intl from Portsmouth found for this year
24 Apr - 28 Apr
£627pp
SOU
Southampton Eastleigh
British Airways
   
2 STOPS
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
British Airways
   
2 STOPS
SOU
Southampton Eastleigh
17 Apr - 21 Apr
£647pp
SOU
Southampton Eastleigh
British Airways
   
2 STOPS
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
British Airways
   
2 STOPS
SOU
Southampton Eastleigh
17 Apr - 21 Apr
£648pp
SOU
Southampton Eastleigh
British Airways
   
2 STOPS
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
British Airways
   
2 STOPS
SOU
Southampton Eastleigh

Related info for your journey

Useful info, stats and facts about Portsmouth to Washington Dulles Intl flights.

Flight FAQs

From Portsmouth to Washington Dulles Intl

Are flight prices decreasing from Southampton 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 Southampton 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 £658 on Cheapflights?

Yes, there are multiple flights from Portsmouth to Washington Dulles Intl for under £658. The cheapest flight booked recently is on British Airways for just £627, but on average you can expect to pay £866.

Are there direct flights from Portsmouth to Washington Dulles Intl for under £658 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.

Does it rain more in Southampton or Washington Dulles Intl?

Southampton will have less rainfall in 2 compared to Washington Dulles Intl over the next 14 days.

Is Southampton weather warmer or cooler than Washington Dulles Intl?

Our data indicates that the weather will be 31 °C on average in the month of July. The temperature in Washington Dulles Intl is typically hotter than in Southampton. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

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 20m. KLM provides one of the quickest options available for as low as £751. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

Flying on British Airways is currently your cheapest option to Washington Dulles Intl, with prices starting at £627. Additional return tickets that might be worth considering are offered by Delta and KLM, with the lowest prices starting at £744 and £751, respectively.

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Destination information for Washington Dulles Intl

Things to know before you go. Useful info for your trip from Portsmouth to Washington Dulles Intl
Today's exchange rate
£1 = $1.37
Average temperature for January in Washington Dulles Intl
8.0 °C
Avg rainfall for January in Washington Dulles Intl
78.0 mm

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