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Cheap flights from Portsmouth to London Heathrow Airport from £93

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 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LHR
23 Dec — 30 Dec1
1 adult

Cheap flight deals from Portsmouth to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Portsmouth (P0R) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 December 2024.

Round-trip from

£179

One-way from

£93
KLM
  • KLM
  • 1/2-3/2
  • 2 total stops
  • 15h 30m total
  • Portsmouth to London
Search Deals
19/2
  • 19/2
  • 1 total stop
  • 12h 25m total
  • Portsmouth to London
Search Deals

Find flight deals from Portsmouth to Heathrow

Cheapest flights from Portsmouth to Heathrow
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 18 December 2024.

Tue 31/1208:40SOU - LHR
1 stop4h 55mBritish Airways
Tue 7/114:45LHR - SOU
1 stop4h 10mBritish Airways
Deal found 17/12£419

Find flights from Portsmouth to Heathrow within your budget

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 18 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Sat 1/2

17:20-20:50

1 stop3h 30m

London Heathrow

Mon 3/2

20:25-08:25

1 stop12h 00m

£179

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 14/1

09:30-21:00

1 stop11h 30m

London Heathrow

Tue 21/1

20:50-16:00

2 stops19h 10m

£303

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Thu 23/1

12:30-16:40

1 stop4h 10m

London Heathrow

Fri 24/1

15:10-18:55

1 stop3h 45m

£355

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 19/2

09:20-21:45

1 stop12h 25m

£93

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 14/1

09:30-15:35

1 stop6h 05m

£124

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Tue 4/3

08:30-13:45

1 stop5h 15m

£139

SouthamptonLondon

SOU - LHR

SOULHR

Southampton Eastleigh

Wed 19/2

09:00-20:50

1 stop11h 50m

£153

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Portsmouth to Heathrow

Get recent, data-driven insights about flights from Portsmouth to Heathrow including ideal travel times, pricing trends, and more.

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 18 December 2024.

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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 18 December 2024.
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.9

Entertainment

7.2

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

KLM
7.8
Good
1,349 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.9

Entertainment

7.2

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Aer Lingus
7.1
Good
1,073 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.9

Entertainment

7.2

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

British Airways
6.6
Okay
6,820 reviews
KLM
7.8
Good
1,349 reviews
Check prices

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Boarding

7.9

Entertainment

7.2

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

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.

  • What are the cheapest airlines to fly from Portsmouth to London Heathrow Airport one-way?

    The cheapet airlines for a one-way flight from Portsmouth to London Heathrow Airport are Aer Lingus (£124), British Airways (£139), and KLM (£153).

  • Can I find deals for flights from Portsmouth to Heathrow that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Heathrow.

  • Can I find deals for business class flights from Portsmouth to Heathrow?

    Yes. Cheapflights offers flight deals from Portsmouth to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portsmouth to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to London Heathrow Airport (average of £112). Flying from Portsmouth to London Heathrow Airport in July is currently the most expensive (average of £160). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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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