Cheap flights from Portsmouth to London Heathrow Airport from £94
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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Portsmouth to Heathrow
Keep the following information in mind while searching for Portsmouth to Heathrow flight deals. Data was last updated 15 July 2025.
Round-trip from | £261 |
---|---|
One-way from | £94 |
Find flight deals from Portsmouth to Heathrow
Cheapest flights from Portsmouth to HeathrowExplore the most affordable flight options available from Portsmouth to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2025.
Explore the most affordable flight options available from Portsmouth to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Portsmouth to Heathrow 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 858,174 searches. Data last updated 15 July 2025.
Use the filters below to find and compare flights from Portsmouth to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
Wed 27/8
09:10-13:55
1 stop4h 45m
London Heathrow
Wed 3/9
07:40-16:05
1 stop8h 25m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
Sat 2/8
09:20-13:50
1 stop4h 30m
London Heathrow
Mon 4/8
06:30-17:50
1 stop11h 20m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
Thu 28/8
09:40-15:55
1 stop6h 15m
London Heathrow
Thu 4/9
14:20-19:30
1 stop5h 10m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
Thu 28/8
08:30-21:25
1 stop12h 55m
London Heathrow
Thu 4/9
07:30-16:05
1 stop8h 35m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
Mon 6/10
11:50-20:50
1 stop9h 00m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
Wed 31/12
11:40-18:25
1 stop6h 45m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
Fri 29/8
17:35-07:40
1 stop14h 05m
Best time to book a flight from Portsmouth to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Portsmouth with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Portsmouth to London Heathrow Airport
What is the cheapest time of day to fly from P0R to LHR?
Find hourly flight availability from Portsmouth to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 July 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to London Heathrow Airport as you normally would.
What is the cheapest day to fly from Portsmouth to London Heathrow Airport?
Use this chart to determine the cheapest time to fly return from Portsmouth to Heathrow. Price data was last updated on 13 July 2025.
Travellers seeking maximum savings on their Portsmouth to London Heathrow Airport flight should consider departing on Saturday evenings 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.
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 15 July 2025.
See what other customers who have flown with KLM, Aer Lingus, andBritish Airways from Portsmouth to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Comfort
Crew
Boarding
Food
Overall
Reviews
Anonymous,Jun 2025
AMS - BOS
Entertainment
Comfort
Crew
Boarding
Food
Overall
Reviews
Anonymous,Jun 2025
AMS - BOS
Entertainment
Comfort
Crew
Boarding
Food
Overall
Reviews
Anonymous,Jun 2025
AMS - BOS
Entertainment
Comfort
Crew
Boarding
Food
Overall
Reviews
Anonymous,Jun 2025
AMS - BOS
Related info for your journey
Find useful and relevant information for your journey from Portsmouth to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Portsmouth to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
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Users can book flights with no change fees policies with our dedicated filters. Book flights from Portsmouth to Heathrow flexibly with Cheapflights today.
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