Cheap flights from Portsmouth to Heathrow
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How to find the cheapest flight from
Portsmouth (SOU) to Heathrow (LHR)
What is the cheapest day to fly return from Portsmouth to Heathrow?
Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 9% on your flight compared to booking on days when demand is much higher.
How far in advance should I book a flight from Portsmouth to Heathrow?
Find a great deal and save up to 42% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Portsmouth to Heathrow within the next two weeks, with the cheapest ticket starting at £57.
When is the cheapest time to fly from Portsmouth to Heathrow (SOU - LHR)?
It’s optimal to fly from Portsmouth to Heathrow in the midday. By choosing this option you can save up to 77% on the cost of your flight, compared to a flight in the morning.