Cheap flights from Portsmouth to Washington, D.C.

LHR — WAS
17 Aug — 24 Aug1
Return
1 adult
Economy
From?
To?
Wed 17/8
Wed 24/8

How far in advance should I book a flight from Portsmouth to Washington, D.C.?

Travelers have found it’s best to book a flight 61 days in advance to save up to 26% 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 61 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, D.C. 1-2 weeks in advance for as low as £704, or £818 for flights within the next 24 hours.

What is the cheapest month to fly from Portsmouth to Washington, D.C.?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from Portsmouth in February are about £631 on average during February, but can be found for as low as £430.

When is the cheapest time to fly from Portsmouth to Washington, D.C. (P0R - WAS)?

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.

Cheap flights from Portsmouth to Washington, D.C. in August, September 2022

The best prices found for Portsmouth to WAS flights in August, September
13 Sep - 24 Nov
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

16h 10m
£756

British Airways

Pick Dates

Deal found 10/8/22

12 Sep - 24 Nov
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

23h 25m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

16h 10m
£781

British Airways

Pick Dates

Deal found 10/8/22

7 Sep - 21 Sep
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

15h 35m
£803

British Airways

Pick Dates

Deal found 9/8/22

Portsmouth to Washington, D.C. 2022 flight deals

Cheap flights to Washington, D.C. from Portsmouth found for this year
13 Sep - 24 Nov
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

16h 10m
£756

British Airways

Pick Dates

Deal found 10/8/22

12 Sep - 24 Nov
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

23h 25m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

16h 10m
£781

British Airways

Pick Dates

Deal found 10/8/22

7 Sep - 21 Sep
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

15h 35m
£803

British Airways

Pick Dates

Deal found 9/8/22

Cheap British Airways flights from Portsmouth to Washington, D.C.

13 Sep - 24 Nov
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

16h 10m
£756

British Airways

Pick Dates

Deal found 10/8/22

12 Sep - 24 Nov
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

23h 25m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

16h 10m
£781

British Airways

Pick Dates

Deal found 10/8/22

7 Sep - 21 Sep
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

15h 35m
£805

British Airways

Pick Dates

Deal found 10/8/22

Last-minute flights from Portsmouth to Washington, D.C.

Late deals on return flights to Washington, D.C. from Portsmouth, departing today and this week
21 Aug - 4 Sep
SOU

Southampton Eastleigh

BWI

Baltimore/Washington

2 stops

28h 15m
BWI

Baltimore/Washington

SOU

Southampton Eastleigh

2 stops

17h 25m
£2,174

British Airways

Pick Dates

Deal found 11/8/22

20 Aug - 4 Sep
SOU

Southampton Eastleigh

BWI

Baltimore/Washington

2 stops

15h 25m
BWI

Baltimore/Washington

SOU

Southampton Eastleigh

2 stops

17h 25m
£2,203

British Airways

Pick Dates

Deal found 11/8/22

20 Aug - 4 Sep
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
IAD

Washington, D.C. Dulles Intl

SOU

Southampton Eastleigh

2 stops

12h 45m
£2,759

British Airways

Pick Dates

Deal found 11/8/22

One-way flights to Washington, D.C. from Portsmouth

The cheapest one-way flights from Portsmouth to Washington, D.C.
17 Nov
SOU

Southampton Eastleigh

DCA

Washington, D.C. Reagan-National

2 stops

15h 08m
£564

Delta

Pick Dates

Deal found 9/8/22

17 Aug
SOU

Southampton Eastleigh

BWI

Baltimore/Washington

2 stops

15h 25m
£1,937

British Airways

Pick Dates

Deal found 9/8/22

17 Aug
SOU

Southampton Eastleigh

IAD

Washington, D.C. Dulles Intl

2 stops

16h 45m
£1,937

British Airways

Pick Dates

Deal found 9/8/22

Related info for your journey

Useful info, stats and facts about Portsmouth to Washington, D.C. flights.

Can I find flights from Portsmouth to Washington, D.C. for under £800 on Cheapflights?

Yes, there are multiple flights from Portsmouth to Washington, D.C. for under £800. The cheapest flight booked recently is on British Airways for just £756, but on average you can expect to pay £2,511.

Are there last-minute flights available from Portsmouth to Washington, D.C. for under £2,200?

There are currently 3+ open flights from Portsmouth to Washington, D.C. within the next 7 days for less than £2,200.

What are the most popular routes from Portsmouth to Washington, D.C.?

The most popular route from Portsmouth to Washington, D.C. is Southampton Eastleigh - Washington, D.C. Dulles Intl. You may also consider Southampton Eastleigh - Baltimore/Washington or Southampton Eastleigh - Washington, D.C. Reagan-National.

What are the most popular airlines that fly from Portsmouth to Washington, D.C.?

The most popular airlines flying from Portsmouth to Washington, D.C. are Endeavor Airlines, American Airlines and Air Canada. Something to consider prior to booking your flight.

What are the most reliable airlines from Portsmouth to Washington, D.C.?

Consider Air Canada (71%), Austrian Airlines (71%) or United Airlines (71%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Washington, D.C..

What are the cheapest flights from Portsmouth to Washington, D.C.?

On average you can expect to pay £2,075 for a flight from Portsmouth to Washington, D.C.. The cheapest flight overall is £495 while the most popular route, (Southampton Eastleigh - Washington, D.C. Dulles Intl) is currently priced at £808.

Other flights to Washington, D.C.

Top 10 airlines flying from Portsmouth to Washington, D.C.

The chart below displays the airlines Cheapflights users travelling from Portsmouth to Washington, D.C. choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
TAP AIR PORTUGALCheapest£335Average£469FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
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Aer LingusCheapest£407Average£561FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
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IcelandairCheapest£424Average£539FlexibilityNo cancel feeOn-time76%COVID-19 safety
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Scandinavian AirlinesCheapest£442Average£766FlexibilityNo cancel feeOn-time77%COVID-19 safety
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Virgin AtlanticCheapest£501Average£683FlexibilityNo cancel feeOn-time72%COVID-19 safety
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Air CanadaCheapest£502Average£646FlexibilityNo cancel feeOn-time67%COVID-19 safety
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IberiaCheapest£512Average£752FlexibilityNo cancel feeOn-time77%COVID-19 safety
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LufthansaCheapest£516Average£702FlexibilityNo cancel feeOn-time76%COVID-19 safety
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United AirlinesCheapest£523Average£718FlexibilityNo cancel feeOn-time69%COVID-19 safety
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Air FranceCheapest£525Average£812FlexibilityNo cancel feeOn-time77%COVID-19 safety
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Hourly flight availability from Portsmouth to Washington, D.C.

See what time of day planes typically take off from Portsmouth to Washington, D.C.
1%of flight departuresEarly morningMidnight to 6 am
60%of flight departuresMorning6 am to noon
39%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM