Cheap flights from Portsmouth to Washington, D.C. from £283
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Portsmouth to Washington, D.C.
Keep the following information in mind while searching for Portsmouth to Washington, D.C. flight deals. Data was last updated 28 April 2025.
Find flight deals from Portsmouth to Washington, D.C.
Cheapest flights from Portsmouth to Washington, D.C.Explore the most affordable flight options available from Portsmouth to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 April 2025.
Explore the most affordable flight options available from Portsmouth to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 April 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Portsmouth to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 April 2025.
Use the filters below to find and compare flights from Portsmouth to Washington, D.C. that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Thu 29/5
17:35-15:35
1 stop27h 00m
Washington, D.C. Dulles Intl
Mon 2/6
17:25-17:00
1 stop18h 35m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Thu 29/5
09:40-20:05
2 stops15h 25m
Washington, D.C. Dulles Intl
Mon 2/6
22:40-19:30
2 stops15h 50m
SouthamptonBaltimore
SOU - BWI
SOUBWI
Southampton Eastleigh
Thu 29/5
09:20-20:43
2 stops16h 23m
Baltimore/Washington
Mon 2/6
19:44-17:00
2 stops16h 16m
SouthamptonWashington, D.C.
SOU - DCA
SOUDCA
Southampton Eastleigh
Thu 29/5
09:20-18:59
2 stops14h 39m
Washington, D.C. Reagan-National
Mon 2/6
13:15-08:50
2 stops14h 35m
SouthamptonWashington, D.C.
SOU - DCA
SOUDCA
Southampton Eastleigh
Wed 11/6
20:00-19:43
2 stops28h 43m
Washington, D.C. Reagan-National
Wed 18/6
12:55-16:00
3 stops22h 05m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Thu 29/5
20:00-22:10
2 stops31h 10m
Washington, D.C. Dulles Intl
Mon 2/6
08:18-19:30
3 stops30h 12m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Wed 11/6
09:20-23:14
2 stops18h 54m
Washington, D.C. Dulles Intl
Wed 18/6
20:30-17:00
2 stops15h 30m
SouthamptonBaltimore
SOU - BWI
SOUBWI
Southampton Eastleigh
Wed 11/6
09:10-07:30
2 stops27h 20m
Baltimore/Washington
Wed 18/6
14:15-08:40
2 stops13h 25m
SouthamptonWashington, D.C.
SOU - IAD
SOUIAD
Southampton Eastleigh
Sun 8/6
09:20-15:35
1 stop11h 15m
Washington, D.C. Dulles Intl
Mon 16/6
17:25-08:50
1 stop10h 25m
SouthamptonBaltimore
SOU - BWI
SOUBWI
Southampton Eastleigh
Sun 8/6
09:20-20:43
2 stops16h 23m
Baltimore/Washington
Mon 16/6
13:00-08:50
2 stops14h 50m
Best time to book a flight from Portsmouth to Washington, D.C.
Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Portsmouth with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Portsmouth to Washington, D.C.
What is the cheapest month to book a flight from Portsmouth to Washington, D.C.?
Currently, January is the cheapest month in which you can book a flight from Portsmouth to Washington, D.C. (average of £599). Flying from Portsmouth to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from P0R to WAS?
Find hourly flight availability from Portsmouth to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 April 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Washington, D.C. as you normally would.
What is the cheapest day to fly from Portsmouth to Washington, D.C.?
Use this chart to determine the cheapest time to fly return from Portsmouth to Washington, D.C.. Price data was last updated on 30 June 2024.
Travellers seeking maximum savings on their Portsmouth to Washington, D.C. flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Portsmouth to Washington, D.C.
Explore weekly flight availability from Portsmouth to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 28 April 2025.
The most flights from P0R to WAS are scheduled on a Friday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
Rainfall in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.
Temperature in Washington, D.C. by month
Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).
Reviews of airlines servicing Washington, D.C.
Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 28 April 2025.
Read reviews from past customers who have flown Delta, KLM and Virgin Atlantic from Portsmouth to Washington, D.C.. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Entertainment
Boarding
Overall
Food
Comfort
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Entertainment
Boarding
Overall
Food
Comfort
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Entertainment
Boarding
Overall
Food
Comfort
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Entertainment
Boarding
Overall
Food
Comfort
Reviews
Aaron,Oct 2024
TUS - LAX
Crew
Entertainment
Boarding
Overall
Food
Comfort
Reviews
Aaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Portsmouth to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Portsmouth?
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Alternative routes for Portsmouth to Washington, D.C.
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Top 10 airlines flying from Portsmouth to Washington, D.C.
Discover the top 10 airlines that operate flights from Portsmouth to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 28 April 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Portsmouth to Washington, D.C.?
Deals for Portsmouth to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Washington, D.C.?
Cheapflights simply makes it quick and affordable to book flights from Portsmouth to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Portsmouth to Washington, D.C. with no change fees?
Certainly. Search results for flights to Washington, D.C. from Portsmouth shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from Portsmouth to Washington, D.C. become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington, D.C. from Portsmouth today and book when prices fit your budget.