Find Cheap Flights from Portsmouth to London – Compare and Save

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Price, demand, and travel trends for Portsmouth to London flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the cheapest Portsmouth to London flight route?

There's little price difference between Portsmouth to London routes. They average around £530 return, based on KAYAK data over the past 12 months.

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When to book flights from Portsmouth to London

Are your dates flexible? Find out the best times to travel from Portsmouth to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Portsmouth to London flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Portsmouth to London?

    Only Economy class is available on flights from Portsmouth to London.

  • How long is a flight from Portsmouth to London?

    There are currently no direct flights available from Portsmouth to London. Flights with 1 stopover take between 3h 45m and 4h 47m in total, depending on the connection.

  • Do I need a passport to fly from Portsmouth to London?

    No, a passport is not required for this domestic route, but you will need another form of identification, such as a driving licence.

  • What car hire options are available in London?

    Since London is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) – daily rates from around £29:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) – daily rates from around £29:

    • GREEN MOTION
    • DRIVALIA
    • U-Save
    • Europcar
    • Alamo

    Near London City Airport (LCY) – daily rates from around £30:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Stansted Airport (STN) – daily rates from around £29:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • U-Save

    Near London Luton Airport (LTN) – daily rates from around £31:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • U-Save

  • Which airports can I use when flying from Portsmouth to London?

    Flights from Portsmouth to London usually depart from Southampton Eastleigh (SOU) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

  • Which airports do connecting flights from Portsmouth to London pass through?

    One-stop flights from Portsmouth to London most commonly connect through:

    • Manchester (MAN) – 43% of one-stop connections
    • London Heathrow (LHR) – 29% of one-stop connections
    • Belfast City (BHD) – 14% of one-stop connections
    • Dublin (DUB) – 14% of one-stop connections

  • Can I save money by using flexible dates for flights from Portsmouth to London?

    Yes. Flexible dates can save you up to 71% on flights from Portsmouth to London. Saturday is the cheapest departure day at £291 return on average, while Tuesday is the most expensive at £995, a difference of £704.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How much time can I save by choosing a different stopover airport from Portsmouth to London?

    Flying via London Heathrow (LHR) gives the shortest average 1-stop total travel time of 3h 45m, compared to 4h 19m via Manchester (MAN) and 4h 27m via Belfast City (BHD).

  • What popular places can I visit in London?

    Some of the most popular sights in London are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London on KAYAK.

Your guide to booking Portsmouth to London flights

Get tips on when to book, when to fly, and what to know before your trip.

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Complete your trip to London with a hotel stay or car hire

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