Find flights
Airlines
FAQs

Cheap flights from Portsmouth to Washington, D.C. Dulles Intl Airport from £367

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 26/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
LHR — IAD
30 Apr — 7 May1
1 adult
Tue 30/4
Tue 7/5

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

To save on the cost of your flight from Portsmouth to Washington, D.C. Dulles Intl Airport, book at least 57 days before your planned departure. Booking around this time can save you about 31% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £553 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £613.

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

The best pricing can be found in the month of September. Prices to Washington, D.C. Dulles Intl Airport from Portsmouth average £531. You can even find prices in September for less than £531, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as £282. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Portsmouth. Flying in the targeted month can save you up to 15%.

When is the cheapest time to fly from Portsmouth to Washington, D.C. Dulles Intl Airport (P0R - IAD)?

When flying from Portsmouth to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap British Airways flights from Portsmouth to Dulles Intl

Explore cheap flight options specifically provided by British Airways for the route between Portsmouth and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 928,181 searches. Data last updated 25 April 2024.
Consider these cheap British Airways flights we've found departing from Portsmouth to Washington, D.C.. Be sure to come back soon if the deals available don't appeal to you at this time.
Sat 20/709:55SOU - IAD
2 stops15h 35mBritish Airways
Sun 21/722:50IAD - SOU
2 stops15h 35mBritish Airways
Deal found 24/4£1,037
Sat 20/709:55SOU - IAD
2 stops15h 35mBritish Airways
Sun 21/720:40IAD - SOU
1 stop17h 50mBritish Airways
Deal found 24/4£1,073
Sat 20/709:40SOU - IAD
1 stop11h 00mBritish Airways
Sun 21/717:10IAD - SOU
1 stop11h 00mBritish Airways
Deal found 24/4£1,224
Mon 5/809:40SOU - IAD
1 stop14h 30mBritish Airways
Sun 11/814:05IAD - SOU
2 stops14h 05mBritish Airways
Deal found 23/4£1,340
Mon 5/808:40SOU - IAD
2 stops16h 50mBritish Airways
Sun 11/814:05IAD - SOU
2 stops14h 05mBritish Airways
Deal found 23/4£1,345
Mon 5/809:40SOU - IAD
1 stop11h 00mBritish Airways
Sun 11/817:10IAD - SOU
1 stop11h 00mBritish Airways
Deal found 23/4£1,361
Tue 24/908:40SOU - IAD
2 stops16h 50mBritish Airways
Mon 7/1020:40IAD - SOU
1 stop17h 50mBritish Airways
Deal found 24/4£2,439
Tue 24/908:40SOU - IAD
2 stops16h 50mBritish Airways
Tue 8/1017:55IAD - SOU
2 stops13h 05mBritish Airways
Deal found 24/4£2,456
Tue 24/908:40SOU - IAD
2 stops16h 50mBritish Airways
Sat 5/1017:10IAD - SOU
1 stop11h 00mBritish Airways
Deal found 24/4£2,528

Cheap Delta flights from Portsmouth to Dulles Intl

Explore cheap flight options specifically provided by Delta for the route between Portsmouth and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 928,181 searches. Data last updated 25 April 2024.
Take a gander at the lowest prices we've found on Delta flights from Portsmouth to Washington, D.C.. Deals frequently update to provide users with more options.
Wed 25/907:55SOU - IAD
2 stops36h 35mDelta
Sun 29/916:55IAD - SOU
2 stops33h 30mDelta
Deal found 24/4£653
Wed 25/907:55SOU - IAD
1 stop13h 05mDelta
Sun 29/916:55IAD - SOU
2 stops33h 30mDelta
Deal found 24/4£659
Wed 25/907:55SOU - IAD
1 stop13h 05mDelta
Sun 29/917:25IAD - SOU
1 stop18h 25mDelta
Deal found 24/4£684

Cheap Portsmouth to Dulles Intl flights in April & May 2024

Find cheap flight options from Portsmouth to Dulles Intl specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 928,181 searches. Prices were last updated on 25 April 2024.
The lowest fares we've come across on flights travelling from Portsmouth to Washington, D.C. in April and May 2024. For more flight deals, be sure to check back very soon.
Mon 29/420:00SOU - IAD
1 stop24h 40mAer Lingus
Mon 6/520:40IAD - SOU
1 stop31h 30mAer Lingus
Deal found 24/4£896
Mon 29/420:00SOU - IAD
2 stops29h 30mAer Lingus
Mon 6/520:40IAD - SOU
1 stop31h 30mAer Lingus
Deal found 24/4£987
Thu 25/419:40SOU - IAD
2 stops26h 46mDelta
Mon 29/406:00IAD - SOU
2 stops20h 25mDelta
Deal found 23/4£1,066
Thu 25/407:55SOU - IAD
1 stop12h 40mVirgin Atlantic
Mon 29/417:25IAD - SOU
1 stop20h 45mVirgin Atlantic
Deal found 23/4£1,068
Mon 29/420:00SOU - IAD
2 stops24h 35mBritish Airways
Mon 6/517:55IAD - SOU
2 stops13h 05mBritish Airways
Deal found 24/4£1,132
Thu 23/509:40SOU - IAD
1 stop14h 30mBritish Airways
Tue 28/522:45IAD - SOU
2 stops15h 25mBritish Airways
Deal found 24/4£4,143

Portsmouth to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between Portsmouth and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 928,181 searches. Data last updated 25 April 2024.
The lowest fares we've come across on flights travelling from Portsmouth to Washington, D.C. in April and May 2024. For more flight deals, be sure to check back very soon.
Wed 25/907:55SOU - IAD
2 stops36h 35mDelta
Sun 29/916:55IAD - SOU
2 stops33h 30mDelta
Deal found 24/4£653
Wed 25/907:55SOU - IAD
1 stop13h 05mDelta
Sun 29/916:55IAD - SOU
2 stops33h 30mDelta
Deal found 24/4£659
Wed 25/907:55SOU - IAD
1 stop13h 05mDelta
Sun 29/917:25IAD - SOU
1 stop18h 25mDelta
Deal found 24/4£684
Mon 29/420:00SOU - IAD
1 stop24h 40mAer Lingus
Mon 6/520:40IAD - SOU
1 stop31h 30mAer Lingus
Deal found 24/4£896
Mon 29/420:00SOU - IAD
2 stops29h 30mAer Lingus
Mon 6/520:40IAD - SOU
1 stop31h 30mAer Lingus
Deal found 24/4£987
Sat 20/709:55SOU - IAD
2 stops15h 35mBritish Airways
Sun 21/722:50IAD - SOU
2 stops15h 35mBritish Airways
Deal found 24/4£1,037
Thu 25/407:55SOU - IAD
2 stops29h 47mDelta
Mon 29/417:25IAD - SOU
1 stop20h 45mDelta
Deal found 23/4£1,066
Thu 25/407:55SOU - IAD
1 stop12h 40mVirgin Atlantic
Mon 29/417:25IAD - SOU
1 stop20h 45mVirgin Atlantic
Deal found 23/4£1,068
Sat 20/709:55SOU - IAD
2 stops15h 35mBritish Airways
Sun 21/720:40IAD - SOU
1 stop17h 50mBritish Airways
Deal found 24/4£1,073

One-way flights to Dulles Intl from Portsmouth

Search for one-way flight options from Portsmouth to Dulles Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 928,181 searches. Data last updated 25 April 2024.
If you're seeking multiple options on one-way flights from Portsmouth to Washington, D.C., be sure to check out these deals, which are updated often. Users needing a return flight from Portsmouth to Washington, D.C. should utilize the search form above.
Wed 26/609:15SOU - IAD
3 stops37h 25mMultiple Airlines
Deal found 23/4£367
Wed 26/620:00SOU - IAD
2 stops26h 40mMultiple Airlines
Deal found 23/4£507
Wed 26/607:55SOU - IAD
1 stop13h 05mKLM
Deal found 23/4£1,272
Mon 20/509:40SOU - IAD
1 stop14h 30mBritish Airways
Deal found 24/4£2,093
Mon 20/508:40SOU - IAD
2 stops16h 50mBritish Airways
Deal found 24/4£2,104

Find flights from Portsmouth to Dulles Intl within your budget

Customise your flight search to find flights from Portsmouth to Dulles Intl 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 928,181 searches. Data last updated 25 April 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£653 - £1,361

Route

Depart

Return

Price

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 25/9

2 stops36h 35m

Washington, D.C. Dulles Intl

Sun 29/9

2 stops33h 30m

£653

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 25/9

1 stop13h 05m

Washington, D.C. Dulles Intl

Sun 29/9

2 stops33h 30m

£659

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Wed 25/9

1 stop13h 05m

Washington, D.C. Dulles Intl

Sun 29/9

1 stop18h 25m

£684

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 20/7

2 stops15h 35m

Washington, D.C. Dulles Intl

Sun 21/7

2 stops15h 35m

£1,037

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 20/7

2 stops15h 35m

Washington, D.C. Dulles Intl

Sun 21/7

1 stop17h 50m

£1,073

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Sat 20/7

1 stop11h 00m

Washington, D.C. Dulles Intl

Sun 21/7

1 stop11h 00m

£1,224

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 5/8

1 stop14h 30m

Washington, D.C. Dulles Intl

Sun 11/8

2 stops14h 05m

£1,340

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 5/8

2 stops16h 50m

Washington, D.C. Dulles Intl

Sun 11/8

2 stops14h 05m

£1,345

Southampton EastleighWashington, D.C. Dulles Intl

SOU - IAD

SOUIAD

Southampton Eastleigh

Mon 5/8

1 stop11h 00m

Washington, D.C. Dulles Intl

Sun 11/8

1 stop11h 00m

£1,361

Flights are sorted by cheapest first

Deals found on 24/4

When is the cheapest time to fly from Portsmouth to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly return from Portsmouth to Dulles Intl. Price data was last updated on 21 April 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their Portsmouth to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 25 April 2024.
Read reviews from past customers who have flown British Airways and Delta 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.
8.1
Very Good
11,004 reviews

Comfort

7.9

Boarding

8.2

Food

7.5

Crew

8.6

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

8.1
Very Good
11,004 reviews
8.1
Very Good
11,004 reviews

Comfort

7.9

Boarding

8.2

Food

7.5

Crew

8.6

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.9
Good
1,629 reviews
8.1
Very Good
11,004 reviews

Comfort

7.9

Boarding

8.2

Food

7.5

Crew

8.6

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

6.8
Okay
6,924 reviews
8.1
Very Good
11,004 reviews

Comfort

7.9

Boarding

8.2

Food

7.5

Crew

8.6

Overall

8.1

Entertainment

8.0

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Portsmouth to Washington, D.C. Dulles Intl Airport for under £700 on Cheapflights?

    Yes, there are multiple flights from Portsmouth to Washington, D.C. Dulles Intl Airport for under £700. The cheapest flight booked recently is on Delta for just £653, but on average you can expect to pay £1,885.

  • What days are direct flights available from Portsmouth to Washington, D.C. Dulles Intl Airport?

    Days when direct flights are available for this flight are: Sunday, Tuesday, Saturday.

  • How many flights depart from Portsmouth to Washington, D.C. Dulles Intl Airport on average per day?

    7 flight departures from Portsmouth to Washington, D.C. Dulles Intl Airport per day on average.
    Morning (6am - Midday) - 14% of flight departures
    Afternoon (Midday - 6pm) - 86% of flight departures

  • How long is the flight from Portsmouth to Washington, D.C. Dulles Intl Airport?

    Your travel time can differ by up to 21h. Airlines will cover a distance of 3687 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portsmouth to Washington, D.C. Dulles Intl Airport on time: Air Canada (90%), Austrian Airlines (90%), Copa Airlines (90%).

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

    The cheapest flight price from Portsmouth to Washington, D.C. Dulles Intl Airport is £532. On average you can expect to pay £1,450. The most popular route, (Southampton Eastleigh - Washington, D.C. Dulles Intl), can usually be booked for £781.

  • What does LHR to IAD mean?

    LHR and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. LHR to IAD refers to a flight route from London Heathrow Airport to Washington, D.C. Dulles Intl Airport. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), Southampton Eastleigh Airport (SOU).

  • Can I find deals for flights from Portsmouth to Dulles Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Portsmouth to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Portsmouth to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portsmouth to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Portsmouth to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Dulles Intl?

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

  • Can I find deals for business class flights from Portsmouth to Dulles Intl?

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

  • Can I find deals for flights from Portsmouth to Dulles Intl that allow pets onboard?

    Many airlines flying from Portsmouth to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Portsmouth to Dulles Intl?

    Yes, you can often find last-minute deals on Portsmouth to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Portsmouth to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Portsmouth to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 24/4.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portsmouth to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to Dulles Intl

Discover the top 10 airlines that operate flights from Portsmouth to Dulles Intl. 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 928,181 searches. Data last updated 25 April 2024.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£237Average£587FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
PLAYCheapest£285Average£388FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£376Average£542FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£386Average£627FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
TAP AIR PORTUGALCheapest£395Average£623FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Aer LingusCheapest£411Average£606FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£419Average£572FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Scandinavian AirlinesCheapest£421Average£541FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
American AirlinesCheapest£423Average£602FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest£452Average£498FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Search flights from Portsmouth to Dulles Intl by cabin class

Find flights from Portsmouth to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Portsmouth to Dulles Intl

Find hourly flight availability from Portsmouth to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 April 2024.
1%of flight departuresEarly morningMidnight to 6 am
53%of flight departuresMorning6 am to noon
46%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Midday
6 PM

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Dulles Intl?

When you search for this flight from Portsmouth to Dulles Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Dulles Intl?

Cheapflights simply makes it quick and affordable to book flights from Portsmouth to Dulles Intl 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 Dulles Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Portsmouth to Dulles Intl with no change fees.

Can Cheapflights notify me if prices for flights from Portsmouth to Dulles Intl become cheaper?

Of course! You can now track prices for flights from Portsmouth to Dulles Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.