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Cheap flights from Porto to London Heathrow Airport from £47

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Porto to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Porto to Heathrow
Explore the most affordable flight options available from Porto to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2026.

Fri 20/1121:55
OPO
-
LHR
1 stop11h 15m
Vueling
Mon 23/1120:50
LHR
-
OPO
1 stop16h 20m
Vueling
Deal found 14/7£114
Sat 21/1121:55
OPO
-
LHR
1 stop11h 15m
Vueling
Mon 23/1120:50
LHR
-
OPO
1 stop16h 20m
Vueling
Deal found 13/7£116
Tue 3/1121:55
OPO
-
LHR
1 stop11h 15m
Vueling
Sat 7/1120:50
LHR
-
OPO
1 stop11h 20m
Vueling
Deal found 13/7£123
Thu 10/916:00
OPO
-
LHR
1 stop6h 55m
Multiple Airlines
Mon 14/920:50
LHR
-
OPO
1 stop11h 10m
Multiple Airlines
Deal found 16/7£124
Sat 24/1022:00
OPO
-
LHR
1 stop12h 10m
Vueling
Wed 28/1020:50
LHR
-
OPO
1 stop11h 20m
Vueling
Deal found 15/7£125
Thu 24/920:40
OPO
-
LHR
1 stop18h 05m
Multiple Airlines
Mon 28/915:00
LHR
-
OPO
1 stop8h 05m
Multiple Airlines
Deal found 16/7£133
Sat 26/922:00
OPO
-
LHR
1 stop11h 10m
Multiple Airlines
Mon 28/920:50
LHR
-
OPO
1 stop11h 10m
Multiple Airlines
Deal found 17/7£134
Mon 7/922:00
OPO
-
LHR
1 stop11h 10m
Iberia
Tue 15/909:55
LHR
-
OPO
1 stop6h 15m
Iberia
Deal found 13/7£135
Wed 5/822:00
OPO
-
LHR
1 stop11h 10m
Iberia
Mon 24/820:50
LHR
-
OPO
1 stop11h 10m
Iberia
Deal found 14/7£135
Thu 24/912:35
OPO
-
LHR
1 stop5h 10m
Multiple Airlines
Sun 27/915:30
LHR
-
OPO
1 stop4h 40m
Multiple Airlines
Deal found 16/7£138
Fri 23/1022:00
OPO
-
LHR
1 stop11h 10m
Vueling
Thu 29/1009:55
LHR
-
OPO
1 stop11h 20m
Vueling
Deal found 13/7£138

Find flight deals from Porto to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) 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 July 2026.

Round-trip from

£114

One-way from

£47

Popular in

July

Cheapest in

February

Average price

£374
Vueling
  • Vueling
  • 20/11-23/11
  • 2 total stops
  • 27h 35m total
  • Porto to London
Search Deals
Vueling
  • Vueling
  • 23/9
  • 1 total stop
  • 19h 25m total
  • Porto to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£38 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Porto 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 July 2026.
Use the filters below to find and compare flights from Porto to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 18/11

08:45-20:05

1 stop11h 20m

London Heathrow

Fri 20/11

20:50-08:10

1 stop11h 20m

£140

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 23/10

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 27/10

20:50-08:10

1 stop11h 20m

£146

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 7/12

05:00-13:50

1 stop8h 50m

London Heathrow

Thu 10/12

14:45-22:00

1 stop7h 15m

£156

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 16/10

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 20/10

20:50-08:00

1 stop11h 10m

£164

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 3/10

22:00-09:10

1 stop11h 10m

London Heathrow

Mon 5/10

20:50-08:00

1 stop11h 10m

£177

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 9/10

16:00-22:55

1 stop6h 55m

London Heathrow

Mon 12/10

08:00-19:00

1 stop11h 00m

£178

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 14/10

09:00-22:00

1 stop13h 00m

London Heathrow

Sat 17/10

13:45-20:25

1 stop6h 40m

£193

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 10/10

07:00-22:55

1 stop15h 55m

London Heathrow

Mon 12/10

11:20-23:00

1 stop11h 40m

£194

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 9/9

05:00-10:45

1 stop5h 45m

London Heathrow

Sun 13/9

11:45-18:10

1 stop6h 25m

£200
Fastest return journey

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 10/9

05:05-10:20

1 stop5h 15m

London Heathrow

Thu 10/9

18:45-00:40

1 stop5h 55m

£215

Flights are sorted by cheapest return flights first.

Deals found on 12/7

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight from Porto to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Porto 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.

Cheapflights Insights

Everything you need to know about your flight from Porto to London Heathrow Airport

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

Currently, February is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of £97). Flying from Porto to London Heathrow Airport in July is currently the most expensive (average of £374). 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.

How much does it cost for a return flight from Porto to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from Porto to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Porto to London Heathrow?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to London Heathrow. 0 airlines have flights from Porto to London Heathrow on a regular basis. Booking flights from Porto to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • How long is the flight from Porto to London Heathrow Airport?

    Departing from Porto to London Heathrow Airport will take you 11h 20m. There are 806 mi between Porto and London Heathrow Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto 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 Porto to London Heathrow Airport?

    Currently, February is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of £97). Flying from Porto to London Heathrow Airport in July is currently the most expensive (average of £374). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Watford
Eastbourne
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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Why should you use Cheapflights to find cheap flight tickets from Porto to Heathrow?

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Can Cheapflights find flights from Porto to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from Porto to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from Porto to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Porto to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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