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Portsmouth

$494+ Cheap flights from Washington, D.C. (WAS) to Portsmouth, England

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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Portsmouth

Keep the following information in mind while searching for Washington, D.C. to Portsmouth flight deals. Data was last updated June 30, 2025.

Round-trip from

$811
(Delta)

One-way from

$494
(KLM)

Popular in

June

Cheapest in

October

Average price

$1,233
From Washington, D.C. (WAS) to Portsmouth
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One-way flight from Washington, D.C. (WAS) to Portsmouth
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Highest demand for flights based on searches. 16% potential increase in price ($182 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Washington, D.C. to Portsmouth

Cheapest flights from Washington, D.C. to Portsmouth
Explore the most affordable flight options available from Washington, D.C. to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:20 pmIAD - SOU
1 stop9h 45mAer Lingus
Tue 10/149:10 amSOU - IAD
1 stop15h 20mAer Lingus
Deal found 6/28$714
This Trip.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:30 pmIAD - SOU
2 stops18h 00mMultiple Airlines
Tue 10/149:10 amSOU - IAD
2 stops15h 10mMultiple Airlines
Deal found 6/28$752
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/105:25 pmIAD - SOU
1 stop10h 20mDelta
Mon 8/255:35 pmSOU - IAD
1 stop27h 00mDelta
Deal found 6/27$811
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:30 pmDCA - SOU
2 stops22h 20mDelta
Tue 11/119:00 amSOU - DCA
2 stops15h 20mDelta
Deal found 6/27$826
This KLM deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:00 pmBWI - SOU
2 stops14h 45mKLM
Wed 9/249:20 amSOU - BWI
2 stops20h 08mKLM
Deal found 6/28$827
This KLM deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/108:23 pmIAD - SOU
2 stops15h 37mKLM
Wed 9/249:20 amSOU - IAD
2 stops15h 17mKLM
Deal found 6/29$827
This Mytrip deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/128:30 pmBWI - SOU
2 stops18h 00mMultiple Airlines
Tue 8/199:10 amSOU - BWI
2 stops15h 15mMultiple Airlines
Deal found 6/28$869
This Mytrip deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/284:30 pmDCA - SOU
2 stops22h 00mMultiple Airlines
Mon 8/48:00 pmSOU - DCA
2 stops24h 48mMultiple Airlines
Deal found 6/28$883
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/139:00 amBWI - SOU
2 stops18h 45mDelta
Mon 7/219:20 amSOU - BWI
2 stops17h 44mDelta
Deal found 6/29$1,008
This Virgin Atlantic deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:30 pmBWI - SOU
2 stops18h 30mVirgin Atlantic
Fri 10/39:20 amSOU - BWI
2 stops18h 36mVirgin Atlantic
Deal found 6/27$1,125

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. to Portsmouth 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 2,558,603 searches. Data last updated June 30, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Portsmouth that are best for you.

Fly from

Washington, D.C.

Fly to

Portsmouth

Route

Depart

Return

Price

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 10/7

5:20 pm-8:05 am

1 stop9h 45m

Southampton Eastleigh

Tue 10/14

9:10 am-7:30 pm

1 stop15h 20m

$714

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Tue 10/7

8:30 pm-7:30 pm

2 stops18h 00m

Southampton Eastleigh

Tue 10/14

9:10 am-7:20 pm

2 stops15h 10m

$752

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Sun 8/10

5:25 pm-8:45 am

1 stop10h 20m

Southampton Eastleigh

Mon 8/25

5:35 pm-3:35 pm

1 stop27h 00m

$811

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Fri 11/7

1:30 pm-4:50 pm

2 stops22h 20m

Southampton Eastleigh

Tue 11/11

9:00 am-7:20 pm

2 stops15h 20m

$826

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Wed 9/10

1:00 pm-8:45 am

2 stops14h 45m

Southampton Eastleigh

Wed 9/24

9:20 am-12:28 am

2 stops20h 08m

$827

Washington, D.C.Southampton

IAD - SOU

IADSOU

Washington, D.C. Dulles Intl

Wed 9/10

8:23 pm-5:00 pm

2 stops15h 37m

Southampton Eastleigh

Wed 9/24

9:20 am-7:37 pm

2 stops15h 17m

$827

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Tue 8/12

8:30 pm-7:30 pm

2 stops18h 00m

Southampton Eastleigh

Tue 8/19

9:10 am-7:25 pm

2 stops15h 15m

$869

Washington, D.C.Southampton

DCA - SOU

DCASOU

Washington, D.C. Reagan-National

Mon 7/28

4:30 pm-7:30 pm

2 stops22h 00m

Southampton Eastleigh

Mon 8/4

8:00 pm-3:48 pm

2 stops24h 48m

$883

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Sun 7/13

9:00 am-8:45 am

2 stops18h 45m

Southampton Eastleigh

Mon 7/21

9:20 am-10:04 pm

2 stops17h 44m

$1,008

BaltimoreSouthampton

BWI - SOU

BWISOU

Baltimore/Washington

Mon 9/29

5:30 pm-5:00 pm

2 stops18h 30m

Southampton Eastleigh

Fri 10/3

9:20 am-10:56 pm

2 stops18h 36m

$1,125

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 16 results
1
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Best time to book a flight from Washington, D.C. to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Portsmouth

What is the cheapest month to book a flight from Washington, D.C. to Portsmouth?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Portsmouth (average of $661). Flying from Washington, D.C. to Portsmouth in June is currently the most expensive (average of $1,098). 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 WAS to P0R?

Find hourly flight availability from Washington, D.C. to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 30, 2025.

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

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Portsmouth. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Portsmouth flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. to Portsmouth

Explore weekly flight availability from Washington, D.C. to Portsmouth. 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 June 30, 2025.

The most flights from WAS to P0R are scheduled on a Monday (27 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (18 on average).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated June 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Virgin Atlantic from Washington, D.C. to Portsmouth to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,969 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.1
Good
1,140 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.6
Okay
7,081 reviews
Delta
8.0
Very good
7,969 reviews

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    The most popular flight routes from Washington, D.C. to Portsmouth are Washington, D.C. Dulles Intl - Southampton Eastleigh, Baltimore/Washington - Southampton Eastleigh and Washington, D.C. Reagan-National - Southampton Eastleigh.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to Portsmouth consider choosing Aer Lingus (71%), Finnair (71%) or KLM (70%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Washington, D.C. to Portsmouth is generally $2,059, our data shows the cheapest flight currently is $376. When looking at the most popular route, (Washington, D.C. Dulles Intl - Southampton Eastleigh), you can expect to pay $714 for that flight.

  • Can I find deals for flights from Washington, D.C. to Portsmouth that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Portsmouth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Portsmouth.

  • Can I find deals for business class flights from Washington, D.C. to Portsmouth?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to Portsmouth?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Portsmouth (average of $661). Flying from Washington, D.C. to Portsmouth in June is currently the most expensive (average of $1,098). 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.

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Alternative routes for Washington, D.C. to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
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Reagan-National to Gatwick flights
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Dulles Intl to Luton flights
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Reagan-National to Edinburgh flights
Dulles Intl to Manchester flights
Reagan-National to Manchester flights
Dulles Intl to Birmingham flights
Reagan-National to Birmingham flights
Dulles Intl to Southampton flights
Dulles Intl to Liverpool flights
Dulles Intl to Leeds flights
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Dulles Intl to Newcastle upon Tyne flights
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Reagan-National to Newcastle upon Tyne flights
Reagan-National to Leeds flights
Dulles Intl to Newquay flights
Reagan-National to Liverpool flights
Reagan-National to Southampton flights
Dulles Intl to Southend flights
Reagan-National to Newquay flights
Dulles Intl to Bournemouth flights
Dulles Intl to Doncaster flights
Dulles Intl to East Midlands flights
Reagan-National to East Midlands flights

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

Discover the top 10 airlines that operate flights from Washington, D.C. to Portsmouth. 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 2,558,603 searches. Data last updated June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$369Average$512FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$409Average$598FlexibilityNo cancel feeOn-time77%
DeltaCheapest$421Average$895FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$434Average$618FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$486Average$690FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$496Average$834FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$549Average$730FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$557Average$836FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$572Average$769FlexibilityNo cancel feeOn-time79%
IberiaCheapest$574Average$718FlexibilityNo cancel feeOn-time77%

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