Cheap flights from Portsmouth to London Heathrow Airport from £172
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 19/10. 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 5 setembro 2025.
Round-trip from | £215 |
---|---|
One-way from | £172 |
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 5 setembro 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 5 setembro 2025.
Cheapflights Fare Finder
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
sex 19/9
19:25-14:15
1 stop18h 50m
London Heathrow
dom 21/9
15:05-07:35
1 stop16h 30m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
seg 20/10
08:10-14:15
1 stop6h 05m
London Heathrow
seg 27/10
07:50-15:35
1 stop7h 45m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
ter 7/10
20:00-09:05
1 stop13h 05m
London Heathrow
qui 9/10
15:10-19:30
1 stop4h 20m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
sáb 4/10
09:40-20:20
1 stop10h 40m
London Heathrow
sáb 11/10
21:10-08:35
1 stop11h 25m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
sex 3/10
09:40-19:25
1 stop9h 45m
London Heathrow
sex 10/10
21:10-08:40
1 stop11h 30m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
qui 18/9
20:00-09:05
1 stop13h 05m
London Heathrow
sáb 27/9
20:10-08:35
1 stop12h 25m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
sáb 4/10
09:40-14:55
1 stop5h 15m
London Heathrow
sáb 11/10
15:10-07:55
2 stops16h 45m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
ter 7/10
09:10-15:55
1 stop6h 45m
London Heathrow
qui 9/10
07:40-17:00
2 stops9h 20m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
qua 1/10
09:10-18:55
1 stop9h 45m
London Heathrow
qua 8/10
13:25-19:30
1 stop6h 05m
SouthamptonLondon
SOU - LHR
SOULHR
Southampton Eastleigh
dom 19/10
16:00-21:25
1 stop5h 25m
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 5 setembro 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 31 August 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.
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.
Travelling to a place near London Heathrow Airport?
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Alternative routes for Portsmouth to Heathrow
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How does Cheapflights help users find flights from Portsmouth to Heathrow?
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Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Heathrow?
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