Title: Cheap Flights from London (LHR) to Portsmouth (PSM) - Expedia.ca ![](https://images.trvl-media.com/place/6057414/a733ee3b-8e9c-48cc-bec5-cd01636327e0.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from London (LHR) to Portsmouth (PSM) - [Roundtrip](?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.) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:psm,departure:27/10/2025TANYT&leg2=from:psm,to:lhr,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:psm,departure:27/10/2025TANYT&leg2=from:psm,to:lhr,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:psm,departure:27/10/2025TANYT&leg2=from:psm,to:lhr,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:psm,departure:27/10/2025TANYT&leg2=from:psm,to:lhr,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:psm,departure:27/10/2025TANYT&leg2=from:psm,to:lhr,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:psm,departure:27/10/2025TANYT&leg2=from:psm,to:lhr,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:psm,departure:27/10/2025TANYT&leg2=from:psm,to:lhr,departure:03/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ![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 30% 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.ca/login) Flight from London to Portsmouth (LHR - PSM) route information | Origin airport | Heathrow | | --- | --- | | Destination airport | Portsmouth Intl. | | Distance | 5150 km | ## London to Portsmouth Flights **The easy way to book your flights from London to Portsmouth**  With Expedia, it’s simple to find and book flights to Portsmouth from London whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Portsmouth Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from London to Portsmouth today, tomorrow, or this week.   **Save dollars with cheap flights from Heathrow, LHR to Portsmouth Intl., PSM**  Sort your search results by price to find great deals on your flight from London to Portsmouth—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Portsmouth from London currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Portsmouth   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Portsmouth from London**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Portsmouth with Expedia today. ## Frequently asked questions ### How much is a flight from LHR to Portsmouth Intl. Airport at Pease? > Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights from Heathrow Airport to Portsmouth Intl. Airport (PSM) start from . Book now to secure the best price for your next 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 Portsmouth Intl. Airport at Pease? > This can vary between air carriers, as each one has its own set of terms and conditions. Head to the [Customer Service Portal](https://www.expedia.ca/helpcenter), where you'll find instructions on how to cancel your flight online. ### How do I find cheap flights from Heathrow Airport (LHR) to PSM that have flexible change policies? > Flights from LHR to Portsmouth Intl. Airport at Pease with flexible change policies are available with many airlines. Simply use our "No change fees" filter during your search. You'll only need to pay the difference in ticket price, without any extra fees to worry about. ### How far is the flight from Heathrow Airport to Portsmouth Intl. Airport at Pease? > The distance is around 5,200 kilometres. Earplugs? Check. Toothbrush? Check. We suggest you pack all the essentials for this long-haul Hounslow to Portsmouth flight. ### Which airlines fly direct from LHR to Portsmouth Intl. Airport at Pease? > You won't find any airlines operating directly between LHR and Portsmouth Intl. Airport (PSM), so be ready to make at least one stop on your journey. A layover can be a welcome way to break up a trip! ### Are Heathrow Airport (LHR) to PSM flight tickets cheaper when they're purchased at the last minute? > It is possible to score great last-minute deals from Heathrow Airport to Portsmouth Intl. Airport at Pease, but it can also be hit-or-miss. As many airlines release prices up to a year in advance, it's worth keeping an eye on fares early and being ready to book when you see a good bargain. Expedia compares air carrier prices and updates flight deals frequently, so you can be certain you're always seeing the latest offers. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Other ### Lodging - [Hotels near Fox Run Mall](https://www.expedia.ca/Fox-Run-Mall-Hotels.0-l6127392-0.Travel-Guide-Filter-Hotels) - [B&B in Newington](https://www.expedia.ca/Newington-Bed-And-Breakfast.d3000447070-aaBedAndBreakfast.Travel-Guide-Accommodation) - [Newington Hotels](https://www.expedia.ca/Newington-Hotels.d3000447070.Travel-Guide-Hotels) - [Pet-Friendly Hotels in North End](https://www.expedia.ca/North-End-Portsmouth-Hotels-Pet-Friendly-Hotel.0-n905208398518345728-0-tPetfriendlyHotel.Travel-Guide-Filter-Hotels) - [Oceanfront Hotels in Pease](https://www.expedia.ca/Pease-Portsmouth-Hotels-Oceanfront-Hotels.0-n553248635976474640-0-tOceanfrontHotels.Travel-Guide-Filter-Hotels) - [Spa Hotels in Pease](https://www.expedia.ca/Pease-Portsmouth-Hotels-Spa-Hotel.0-n553248635976474640-0-tSpaHotel.Travel-Guide-Filter-Hotels) - 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