Find flights
When to book
FAQs

Cheap flights from Porto to London Heathrow Airport from £46

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
10 Sep — 17 Sep1
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 11 August 2026.

Thu 24/920:40 -
1 stop18h 05m
Wed 30/909:55 -
1 stop6h 15m
Deal found 6/8£98
Thu 24/920:40 -
1 stop18h 05m
Tue 29/920:50 -
1 stop14h 45m
Deal found 10/8£110
Thu 19/1120:55 -
1 stop21h 05m
Sun 22/1109:55 -
1 stop22h 15m
Deal found 10/8£113
Thu 24/922:00 -
1 stop11h 10m
Tue 29/920:50 -
1 stop11h 10m
Deal found 9/8£115
Thu 24/920:40 -
1 stop18h 05m
Mon 28/909:55 -
1 stop11h 25m
Deal found 6/8£117
Thu 8/1022:00 -
1 stop11h 10m
Sat 10/1020:50 -
1 stop11h 10m
Deal found 8/8£119

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 11 August 2026.

Round-trip from

£98

One-way from

£46

Popular in

July

Cheapest in

February

Average price

£249
Vueling
  • Vueling
  • 24/9-30/9
  • 2 total stops
  • 24h 20m total
  • Porto to London
Search Deals
Vueling
  • Vueling
  • 24/9
  • 1 total stop
  • 18h 05m total
  • Porto to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£24 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 11 August 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 Porto - LHR London Heathrow

OPOLHR

Porto

Thu 24/9

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 29/9

20:50-08:00

1 stop11h 10m

£115

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Wed 16/9

22:00-09:10

1 stop11h 10m

London Heathrow

Wed 30/9

09:55-16:10

1 stop6h 15m

£128

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 19/9

22:00-09:10

1 stop11h 10m

London Heathrow

Mon 21/9

20:50-08:00

1 stop11h 10m

£156

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Mon 7/12

05:00-13:50

1 stop8h 50m

London Heathrow

Thu 10/12

14:45-22:00

1 stop7h 15m

£159

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Tue 17/11

11:00-17:30

1 stop6h 30m

London Heathrow

Sat 21/11

12:25-00:30

1 stop12h 05m

£169

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Thu 24/9

18:15-17:05

1 stop22h 50m

London Heathrow

Mon 28/9

06:50-16:00

1 stop9h 10m

£176
Fastest return journey

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Fri 25/9

05:00-10:45

1 stop5h 45m

London Heathrow

Mon 28/9

09:55-19:05

1 stop9h 10m

£177

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Thu 24/9

22:30-11:00

1 stop12h 30m

London Heathrow

Tue 29/9

18:45-10:00

1 stop15h 15m

£186

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Fri 25/9

21:15-10:20

1 stop13h 05m

London Heathrow

Mon 28/9

13:45-23:00

1 stop9h 15m

£187

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 28/11

05:00-14:25

1 stop9h 25m

London Heathrow

Tue 1/12

08:40-15:25

1 stop6h 45m

£214

Flights are sorted by cheapest return flights first.

Deals found on 6/8

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 £96). Flying from Porto to London Heathrow Airport in July is currently the most expensive (average of £294). 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?

Airfare is below average for this route at the moment.

Porto to London Heathrow Airport flights typically cost between £197 and £302 in September.
The cheapest return price found within the last 5 days was £98 on Vueling (24 Sept–30 Sept).

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 10m. 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 £96). Flying from Porto to London Heathrow Airport in July is currently the most expensive (average of £294). 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
Ilford
Slough
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Southend-on-Sea
Swindon
Enfield
Kingston upon Thames
Southall
Poole

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Porto today with Cheapflights!

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

Cheapflights helps you find that perfect flight to Heathrow from Porto by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.