Title: Cheap Flights from London to Portsmouth (LHR to PSM) - Expedia.co.uk ![](https://images.trvl-media.com/place/6057414/a733ee3b-8e9c-48cc-bec5-cd01636327e0.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6057414/a733ee3b-8e9c-48cc-bec5-cd01636327e0.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from London (LHR) to Portsmouth (PSM) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Heathrow Airport (LHR) to Portsmouth, NH (PSM-Portsmouth Intl.) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:lhr,to:psm,departure:15/11/2025TANYT&leg2=from:psm,to:lhr,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![easyJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_U2.svg) easyJet [](https://www.expedia.co.uk/Flights-Search?leg1=from:lhr,to:psm,departure:15/11/2025TANYT&leg2=from:psm,to:lhr,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"U2"}}]) - ![Lufthansa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.co.uk/Flights-Search?leg1=from:lhr,to:psm,departure:15/11/2025TANYT&leg2=from:psm,to:lhr,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![Ryanair](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_FR.svg) Ryanair [](https://www.expedia.co.uk/Flights-Search?leg1=from:lhr,to:psm,departure:15/11/2025TANYT&leg2=from:psm,to:lhr,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FR"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:lhr,to:psm,departure:15/11/2025TANYT&leg2=from:psm,to:lhr,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Jet2](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LS.svg) Jet2 [](https://www.expedia.co.uk/Flights-Search?leg1=from:lhr,to:psm,departure:15/11/2025TANYT&leg2=from:psm,to:lhr,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LS"}}]) - ![Swiss International Air Lines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.co.uk/Flights-Search?leg1=from:lhr,to:psm,departure:15/11/2025TANYT&leg2=from:psm,to:lhr,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Frequently asked questions ### How much is a flight from Heathrow Airport (LHR) to Portsmouth Intl. Airport (PSM)? > Based on fares available within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from LHR to Portsmouth Intl. Airport (PSM) start from . Book now to score the best price for your big adventure. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport to PSM? > Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the instructions on our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from London Heathrow to Portsmouth Intl. Airport at Pease that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Heathrow Airport to Portsmouth Intl. Airport at Pease flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from Heathrow Airport (LHR) to Portsmouth Intl. Airport at Pease? > You'll have 5,200 kilometres to cover on the long-haul Hounslow to Portsmouth route. Dress in layers of comfy clothes and consider taking a pair of noise-cancelling earphones. ### Which airlines fly direct from LHR to Portsmouth Intl. Airport at Pease? > You won't find any airlines operating directly between London Heathrow and PSM, so be ready to make at least one stop on your journey. A layover can be a good way to break up a trip! ### Are LHR to Portsmouth Intl. Airport at Pease flight tickets cheaper when they're purchased at the last minute? > It is possible to score amazing last-minute deals from Heathrow Airport (LHR) to Portsmouth Intl. Airport (PSM), but it's also possible to miss out altogether! As many airlines publish prices up to 12 months in advance, it's worth keeping an eye on fares early and being ready to book when you see a bargain. Expedia compares carrier prices and updates flight deals frequently, so you can be sure you're always seeing the latest offers. ## Travel information | Origin airport | Heathrow | | --- | --- | | Destination airport | Portsmouth Intl. | | Distance | 5150 km | ## Book with confidence ### Compare flights from London to Portsmouth easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Portsmouth. Operating between them flights per day, airlines cover the route. And fly direct, getting you to Portsmouth Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Portsmouth Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from Heathrow (LHR) to Portsmouth Intl. (PSM) The easiest way to view the best deals on flights from London to Portsmouth today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Portsmouth Intl. start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near London and Portsmouth - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your London to Portsmouth flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Portsmouth Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. 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