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Cheap flights from Porto to London Heathrow Airport from £42

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
3 Jul — 10 Jul1
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 3 June 2026.

Tue 16/622:00
OPO
-
LHR
1 stop11h 10m
Vueling
Tue 7/709:55
LHR
-
OPO
1 stop6h 15m
Vueling
Deal found 2/6£123
Thu 24/1220:40
OPO
-
LHR
1 stop12h 35m
Multiple Airlines
Tue 5/109:55
LHR
-
OPO
1 stop11h 20m
Multiple Airlines
Deal found 31/5£128
Sat 17/1022:00
OPO
-
LHR
1 stop11h 10m
Multiple Airlines
Tue 20/1020:50
LHR
-
OPO
1 stop11h 10m
Multiple Airlines
Deal found 30/5£130
Fri 26/622:00
OPO
-
LHR
1 stop11h 10m
Vueling
Tue 30/609:55
LHR
-
OPO
1 stop11h 25m
Vueling
Deal found 2/6£132
Mon 30/1120:40
OPO
-
LHR
1 stop11h 45m
Multiple Airlines
Thu 3/1209:55
LHR
-
OPO
1 stop11h 20m
Multiple Airlines
Deal found 30/5£133
Sat 3/1022:00
OPO
-
LHR
1 stop11h 10m
Vueling
Sat 10/1020:50
LHR
-
OPO
1 stop11h 10m
Vueling
Deal found 1/6£137
Wed 2/1208:45
OPO
-
LHR
1 stop11h 20m
Vueling
Sat 5/1220:50
LHR
-
OPO
1 stop17h 05m
Vueling
Deal found 30/5£139
Tue 30/606:00
OPO
-
LHR
1 stop8h 15m
Multiple Airlines
Tue 7/709:55
LHR
-
OPO
1 stop6h 15m
Multiple Airlines
Deal found 2/6£140
Mon 13/722:00
OPO
-
LHR
1 stop11h 10m
Vueling
Mon 20/720:50
LHR
-
OPO
1 stop11h 10m
Vueling
Deal found 29/5£140
Tue 17/1112:25
OPO
-
LHR
1 stop4h 50m
Iberia
Sat 21/1110:45
LHR
-
OPO
1 stop9h 15m
Iberia
Deal found 2/6£141
Mon 30/1114:35
OPO
-
LHR
1 stop18h 35m
Vueling
Sun 6/1209:55
LHR
-
OPO
1 stop11h 20m
Vueling
Deal found 2/6£143
Sat 28/1120:40
OPO
-
LHR
1 stop11h 45m
Iberia
Tue 1/1219:05
LHR
-
OPO
1 stop12h 35m
Iberia
Deal found 29/5£143

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 3 June 2026.

Round-trip from

£123

One-way from

£42

Popular in

July

Cheapest in

February

Average price

£150
Vueling
  • Vueling
  • 16/6-7/7
  • 2 total stops
  • 17h 25m total
  • Porto to London
Search Deals
Vueling
  • Vueling
  • 17/6
  • 1 total stop
  • 22h 00m total
  • Porto to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 3 June 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

Fri 26/6

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 30/6

09:55-21:20

1 stop11h 25m

£132

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 30/11

14:35-09:10

1 stop18h 35m

London Heathrow

Sun 6/12

09:55-21:15

1 stop11h 20m

£143

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 9/7

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 14/7

20:50-08:00

1 stop11h 10m

£144

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 22/6

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 30/6

09:55-16:10

1 stop6h 15m

£150

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 23/6

20:50-09:10

1 stop12h 20m

London Heathrow

Fri 26/6

20:50-08:00

1 stop11h 10m

£192

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 19/6

21:15-10:20

1 stop13h 05m

London Heathrow

Tue 23/6

11:20-19:00

1 stop7h 40m

£229

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 2/7

22:00-09:10

1 stop11h 10m

London Heathrow

Mon 6/7

20:50-08:00

1 stop11h 10m

£232
Fastest return journey

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 3/9

05:05-10:20

1 stop5h 15m

London Heathrow

Mon 7/9

13:45-20:35

1 stop6h 50m

£238

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 2/7

12:10-17:40

1 stop5h 30m

London Heathrow

Mon 6/7

07:30-23:25

2 stops15h 55m

£256

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 2/7

11:00-21:05

1 stop10h 05m

London Heathrow

Mon 6/7

18:30-09:40

1 stop15h 10m

£470

Flights are sorted by cheapest return flights first.

Deals found on 31/5

Showing 1-10 of 21 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 £352). 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 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, 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 £352). 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
Northampton
Wembley
Luton
Gatwick
Croydon
Ilford
Slough
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Ipswich
Watford
Swindon
Romford
Guildford
Borehamwood

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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?

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.

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