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Cheap flights from Porto to London Heathrow Airport from £40

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
29 Aug — 5 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 30 July 2026.

Tue 15/922:00
OPO
-
LHR
1 stop11h 10m
Vueling
Wed 30/909:55
LHR
-
OPO
1 stop6h 15m
Vueling
Deal found 30/7£116
Mon 21/922:00
OPO
-
LHR
1 stop11h 10m
Vueling
Wed 30/909:55
LHR
-
OPO
1 stop6h 15m
Vueling
Deal found 27/7£118
Tue 15/922:00
OPO
-
LHR
1 stop11h 10m
Multiple Airlines
Wed 30/909:55
LHR
-
OPO
1 stop8h 40m
Multiple Airlines
Deal found 25/7£119
Sat 14/1121:55
OPO
-
LHR
1 stop11h 15m
Vueling
Mon 16/1120:50
LHR
-
OPO
1 stop16h 20m
Vueling
Deal found 27/7£123
Tue 1/1208:20
OPO
-
LHR
1 stop8h 55m
Multiple Airlines
Sat 5/1209:55
LHR
-
OPO
1 stop11h 20m
Multiple Airlines
Deal found 28/7£125
Wed 16/919:20
OPO
-
LHR
1 stop19h 25m
Multiple Airlines
Sun 20/915:30
LHR
-
OPO
1 stop4h 40m
Multiple Airlines
Deal found 26/7£126
Mon 21/922:00
OPO
-
LHR
1 stop11h 10m
Vueling
Tue 29/920:50
LHR
-
OPO
1 stop11h 10m
Vueling
Deal found 27/7£128
Thu 24/922:00
OPO
-
LHR
1 stop11h 10m
Vueling
Mon 28/920:50
LHR
-
OPO
1 stop11h 10m
Vueling
Deal found 30/7£129
Tue 15/922:00
OPO
-
LHR
1 stop11h 10m
Vueling
Thu 17/920:50
LHR
-
OPO
1 stop11h 10m
Vueling
Deal found 26/7£130

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 30 July 2026.

Round-trip from

£116

One-way from

£40

Popular in

July

Cheapest in

February

Average price

£298
Vueling
  • Vueling
  • 15/9-30/9
  • 2 total stops
  • 17h 25m total
  • Porto to London
Search Deals
Vueling
  • Vueling
  • 29/9
  • 1 total stop
  • 18h 30m total
  • Porto to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£21 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 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 30 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 2/12

08:45-20:05

1 stop11h 20m

London Heathrow

Sun 6/12

20:50-08:10

1 stop11h 20m

£141

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 17/9

22:00-09:10

1 stop11h 10m

London Heathrow

Mon 21/9

20:50-08:00

1 stop11h 10m

£145

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 17/9

22:00-09:10

1 stop11h 10m

London Heathrow

Wed 23/9

09:55-16:10

1 stop6h 15m

£150

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 5/12

08:45-20:05

1 stop11h 20m

London Heathrow

Sat 12/12

09:55-21:15

1 stop11h 20m

£164

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 15/9

11:00-22:55

1 stop11h 55m

London Heathrow

Thu 17/9

18:45-00:40

1 stop5h 55m

£170

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 22/1

07:00-12:40

1 stop5h 40m

London Heathrow

Sun 24/1

08:15-18:00

1 stop9h 45m

£170
Fastest return journey

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 22/10

05:00-10:45

1 stop5h 45m

London Heathrow

Tue 27/10

17:05-22:30

1 stop5h 25m

£177

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 17/10

21:15-10:20

1 stop13h 05m

London Heathrow

Sun 25/10

12:25-00:30

1 stop12h 05m

£178

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 27/11

20:40-08:25

1 stop11h 45m

London Heathrow

Mon 30/11

13:25-20:00

1 stop6h 35m

£203

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 3/9

14:35-21:30

1 stop6h 55m

London Heathrow

Wed 9/9

06:00-11:25

1 stop5h 25m

£204

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 23 resultsSorted by cheapest first
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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 £98). Flying from Porto to London Heathrow Airport in July is currently the most expensive (average of £298). 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 £200 and £304 in September.
The cheapest return price found within the last 5 days was £116 on Vueling (15 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 20m. 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, February is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of £98). Flying from Porto to London Heathrow Airport in July is currently the most expensive (average of £298). 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
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Swindon
Southend-on-Sea
Enfield
Kingston upon Thames
Poole
Southall

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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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