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Cheap flights from Porto to London Heathrow Airport from £48

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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 14 November 2025.

Round-trip from

£111

One-way from

£48

Popular in

July

Cheapest in

March

Average price

£181
Vueling
  • Vueling
  • 5/3-8/3
  • 2 total stops
  • 35h 20m total
  • Porto to London
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Iberia
  • Iberia
  • 13/12
  • 1 total stop
  • 11h 45m total
  • Porto to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£43 potential increase over avg. return price).
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Cheapest flight prices on average. 8% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find 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 14 November 2025.

Fri 28/1113:45OPO - LHR
1 stop7h 15mLufthansa
Thu 4/1207:40LHR - OPO
1 stop5h 35mLufthansa
Deal found 12/11£131
Thu 4/1214:05OPO - LHR
1 stop6h 55mLufthansa
Wed 10/1206:35LHR - OPO
1 stop6h 15mLufthansa
Deal found 13/11£133
Wed 10/1213:45OPO - LHR
1 stop5h 50mLufthansa
Wed 31/1206:35LHR - OPO
1 stop6h 15mLufthansa
Deal found 12/11£134
Wed 3/1213:45OPO - LHR
1 stop5h 50mLufthansa
Sat 6/1206:35LHR - OPO
1 stop6h 15mLufthansa
Deal found 12/11£135
Sat 13/1213:45OPO - LHR
1 stop5h 50mLufthansa
Wed 31/1206:35LHR - OPO
1 stop6h 15mLufthansa
Deal found 12/11£142
Tue 16/1220:40OPO - LHR
1 stop11h 45mMultiple Airlines
Wed 31/1218:30LHR - OPO
1 stop16h 35mMultiple Airlines
Deal found 13/11£147
Thu 4/1214:05OPO - LHR
1 stop6h 55mMultiple Airlines
Sun 7/1206:00LHR - OPO
1 stop5h 15mMultiple Airlines
Deal found 12/11£148
Wed 17/1206:00OPO - LHR
1 stop7h 50mKLM
Wed 31/1208:40LHR - OPO
1 stop6h 45mKLM
Deal found 13/11£152
Fri 28/1113:45OPO - LHR
1 stop7h 15mLufthansa
Sun 30/1107:30LHR - OPO
1 stop7h 35mLufthansa
Deal found 12/11£153
Sat 15/1120:40OPO - LHR
1 stop12h 35mIberia
Sat 22/1110:45LHR - OPO
1 stop5h 15mIberia
Deal found 13/11£154
Sat 13/1206:00OPO - LHR
1 stop6h 05mMultiple Airlines
Sun 14/1206:00LHR - OPO
1 stop12h 05mMultiple Airlines
Deal found 11/11£162

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 14 November 2025.
Use the filters below to find and compare flights from Porto to London Heathrow Airport that are best for you.

Fly from

Porto

Fly to

Heathrow

Route

Depart

Return

Price

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 21/1

13:45-22:55

1 stop9h 10m

London Heathrow

Mon 26/1

06:35-12:50

1 stop6h 15m

£136

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 12/3

20:05-14:45

1 stop18h 40m

London Heathrow

Thu 19/3

15:15-08:20

1 stop17h 05m

£142

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 16/1

13:45-21:00

1 stop7h 15m

London Heathrow

Tue 20/1

06:00-11:15

1 stop5h 15m

£148

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 14/3

06:15-13:00

1 stop6h 45m

London Heathrow

Sun 15/3

08:30-22:25

1 stop13h 55m

£148

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 12/3

07:00-12:40

1 stop5h 40m

London Heathrow

Mon 16/3

06:00-13:00

1 stop7h 00m

£152

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 23/1

12:55-21:20

1 stop8h 25m

London Heathrow

Wed 28/1

06:50-12:05

1 stop5h 15m

£157

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 12/1

12:55-21:20

1 stop8h 25m

London Heathrow

Wed 21/1

06:35-12:50

1 stop6h 15m

£162

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 13/12

06:00-12:05

1 stop6h 05m

London Heathrow

Sun 14/12

06:00-18:05

1 stop12h 05m

£162

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 16/1

11:00-17:30

1 stop6h 30m

London Heathrow

Sun 18/1

12:25-18:55

1 stop6h 30m

£173

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 5/3

12:05-17:30

1 stop5h 25m

London Heathrow

Sun 8/3

13:40-18:55

1 stop5h 15m

£179

Flights are sorted by cheapest return flights first.

Deals found on 13/11

Showing 1-10 of 21 results
1
2
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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, December is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of £58). Flying from Porto to London Heathrow Airport in November is currently the most expensive (average of £179). 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.

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 9h 10m. There are 806 mi between Porto and London Heathrow Airport. This flight may include one or multiple stops.

  • 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, December is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of £58). Flying from Porto to London Heathrow Airport in November is currently the most expensive (average of £179). 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
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Porto to Heathrow

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Fly with Cheapflights

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How does Cheapflights help users find flights from Porto to Heathrow?

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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.

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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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