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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 14/12. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
29 Dec — 5 Jan1
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 29 November 2025.

Round-trip from

£116

One-way from

£48

Popular in

July

Cheapest in

March

Average price

£208
Vueling
  • Vueling
  • 28/1-3/2
  • 2 total stops
  • 22h 35m total
  • Porto to London
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Iberia
  • Iberia
  • 14/12
  • 1 total stop
  • 5h 50m total
  • Porto to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£40 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 29 November 2025.

Wed 17/1206:00OPO - LHR
1 stop10h 05mKLM
Wed 31/1217:05LHR - OPO
1 stop5h 20mKLM
Deal found 28/11£151
Wed 17/1211:25OPO - LHR
1 stop5h 10mMultiple Airlines
Wed 31/1208:40LHR - OPO
1 stop6h 45mMultiple Airlines
Deal found 27/11£152
Thu 4/1212:05OPO - LHR
1 stop9h 30mTAP AIR PORTUGAL
Fri 5/1208:15LHR - OPO
1 stop9h 45mTAP AIR PORTUGAL
Deal found 28/11£153
Tue 2/1212:25OPO - LHR
1 stop4h 50mMultiple Airlines
Fri 5/1219:55LHR - OPO
1 stop12h 00mMultiple Airlines
Deal found 28/11£157
Wed 24/1206:00OPO - LHR
1 stop10h 05mKLM
Wed 31/1208:40LHR - OPO
1 stop6h 45mKLM
Deal found 27/11£158
Tue 2/1212:25OPO - LHR
1 stop4h 50mMultiple Airlines
Tue 9/1206:00LHR - OPO
1 stop7h 05mMultiple Airlines
Deal found 28/11£161
Tue 23/1208:20OPO - LHR
1 stop8h 15mMultiple Airlines
Mon 29/1213:40LHR - OPO
1 stop5h 20mMultiple Airlines
Deal found 27/11£167
Tue 23/1208:20OPO - LHR
1 stop8h 15mMultiple Airlines
Wed 31/1213:40LHR - OPO
1 stop5h 15mMultiple Airlines
Deal found 27/11£168
Wed 31/1211:15OPO - LHR
1 stop8h 00mKLM
Sat 3/106:30LHR - OPO
1 stop8h 55mKLM
Deal found 28/11£169
Wed 3/1208:20OPO - LHR
1 stop6h 35mMultiple Airlines
Fri 5/1219:55LHR - OPO
1 stop12h 00mMultiple Airlines
Deal found 28/11£172
Wed 3/1208:20OPO - LHR
1 stop6h 35mIberia
Sat 6/1210:45LHR - OPO
1 stop9h 15mIberia
Deal found 27/11£173
Tue 23/1211:15OPO - LHR
1 stop9h 35mKLM
Sat 3/106:30LHR - OPO
1 stop8h 55mKLM
Deal found 29/11£179

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 29 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

Thu 15/1

10:20-15:30

1 stop5h 10m

London Heathrow

Sat 17/1

13:40-19:00

1 stop5h 20m

£128

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 14/1

08:45-20:05

1 stop11h 20m

London Heathrow

Thu 15/1

09:55-21:15

1 stop11h 20m

£140

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 13/1

09:00-21:35

1 stop12h 35m

London Heathrow

Wed 4/2

06:00-13:10

1 stop7h 10m

£140

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 6/3

12:00-17:30

1 stop5h 30m

London Heathrow

Sun 8/3

08:15-14:00

1 stop5h 45m

£141

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 16/1

06:55-12:40

1 stop5h 45m

London Heathrow

Sun 18/1

16:30-22:00

1 stop5h 30m

£141

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 2/2

06:55-12:40

1 stop5h 45m

London Heathrow

Thu 5/2

13:40-19:00

1 stop5h 20m

£141

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 12/3

10:20-15:30

1 stop5h 10m

London Heathrow

Sun 15/3

12:25-18:05

1 stop5h 40m

£141

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 15/1

10:20-15:30

1 stop5h 10m

London Heathrow

Mon 19/1

13:40-19:00

1 stop5h 20m

£141

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 14/1

06:05-20:05

1 stop14h 00m

London Heathrow

Thu 15/1

20:50-08:10

1 stop11h 20m

£144

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 7/3

12:00-17:30

1 stop5h 30m

London Heathrow

Sat 21/3

06:00-12:10

1 stop6h 10m

£144

Flights are sorted by cheapest return flights first.

Deals found on 28/11

Showing 1-10 of 22 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 £178). 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 5h 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 £178). 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
Slough
Croydon
Hounslow
Northampton
Gatwick
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Brentford
Winchester
Swindon
Crawley
Romford
Chichester
Bedford

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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