What is the most punctual flight time for Porto to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

How often are flights from Porto to London delayed?

About 2% of weekly flights between Porto and London have experienced delays in the past year, with the average delay time being 321 minutes.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

How long is the flight from Porto to London Heathrow Airport?

Departing from Porto to London Heathrow Airport will take you 18h. There are 806 mi between Porto and London Heathrow Airport.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from OPO to LHR?

When flying from Porto to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

£44+ Cheap Flights from Porto to London Heathrow Airport

Cheap flight deals from Porto to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

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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 September 2026.

Tue 15/1220:45 -

1 stop18h 00m

Wed 16/1220:50 -

1 stop11h 20m

Deal found 27/9£98

Thu 5/1120:55 -

1 stop21h 05m

Wed 11/1118:50 -

1 stop25h 30m

Deal found 29/9£100

Mon 16/1119:55 -

2 stops22h 05m

Wed 25/1120:50 -

1 stop11h 20m

Deal found 29/9£106

Tue 1/1221:55 -

1 stop11h 15m

Thu 3/1209:55 -

1 stop9h 30m

Deal found 27/9£110

Mon 16/1121:55 -

1 stop11h 15m

Wed 25/1120:50 -

1 stop11h 20m

Deal found 28/9£111

Sat 21/1120:05 -

1 stop18h 40m

Sat 28/1109:55 -

1 stop11h 20m

Deal found 26/9£113

Thu 22/1020:40 -

1 stop18h 05m

Wed 25/1120:50 -

1 stop11h 20m

Deal found 27/9£115

Fri 11/1221:55 -

1 stop11h 15m

Mon 14/1220:50 -

1 stop11h 20m

Deal found 28/9£116

Fri 6/1105:00 -

1 stop6h 25m

Mon 9/1120:50 -

1 stop11h 20m

Deal found 25/9£118

Mon 23/1108:45 -

1 stop11h 20m

Sat 28/1109:55 -

1 stop11h 20m

Deal found 28/9£119

Find flight deals from Porto to Heathrow

Round-trip from	£98
One-way from	£44
Popular in	July
Cheapest in	February
Average price	£187

Vueling
15/12-16/12
2 total stops
29h 20m total
Porto to London

Search Deals

15/11-31/12
1 total stop
21h 05m total
Porto to London

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£26 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 September 2026

Search Deals

Cheapflights Fare Finder

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

Fri 11/12

21:55-09:10

1 stop11h 15m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£54

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Wed 25/11

11:15-19:15

1 stop8h 00m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£69

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Mon 7/12

11:15-17:00

1 stop5h 45m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£69

Fastest return journey

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Mon 30/11

16:10-20:50

1 stop4h 40m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£69

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Fri 13/11

16:10-20:50

1 stop4h 40m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£70

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 24/10

08:35-20:05

1 stop11h 30m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£79

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 7/11

21:55-09:10

1 stop11h 15m

London Heathrow

Tue 10/11

20:50-08:10

1 stop11h 20m

£126

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Thu 3/12

08:45-20:05

1 stop11h 20m

London Heathrow

Sun 6/12

09:55-21:15

1 stop11h 20m

£135

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Fri 6/11

21:55-09:10

1 stop11h 15m

London Heathrow

Mon 9/11

20:50-08:10

1 stop11h 20m

£135

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Mon 5/10

23:50-22:40

3 stops46h 50m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£142

Flights are sorted by cheapest return flights first.

Deals found on 27/9

Showing 1-10 of 24 resultsSorted by cheapest first

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.

OPO-LHR

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

Prices

Delays

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 £300). 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 £150 and £237 in December.
The cheapest return price found within the last 5 days was £98 on Vueling (15 Dec–16 Dec).

Related info for your journey

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 18h. 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 £98). Flying from Porto to London Heathrow Airport in July is currently the most expensive (average of £300). 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.

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Cheap flights from Porto to London Heathrow Airport from £44

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Porto to Heathrow

Cheapest flights from Porto to HeathrowExplore 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 September 2026.

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 September 2026.

Best flights from Porto to HeathrowDiscover carefully curated flight deals from Porto to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Discover carefully curated flight deals from Porto to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Last-minute flights from Porto to HeathrowDiscover last-minute flight deals from Porto to Heathrow. Data last updated 30 September 2026 and is based on user searches.

Discover last-minute flight deals from Porto to Heathrow. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Porto to HeathrowSearch for one-way flight options from Porto to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Search for one-way flight options from Porto to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Find flight deals from Porto to Heathrow

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

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.

Cheapflights Insights

What is the cheapest month to book a flight from Porto to London Heathrow Airport?

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 £150 and £237 in December.The cheapest return price found within the last 5 days was £98 on Vueling (15 Dec–16 Dec).

How often are flights from Porto to London delayed?

About 2% of weekly flights between Porto and London have experienced delays in the past year, with the average delay time being 321 minutes.

What is the most punctual flight time for Porto to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Related info for your journey

What airport do you fly from for flights from Porto to London Heathrow?

How long is the flight from Porto to London Heathrow Airport?

Can I find deals for flights from Porto to Heathrow that include hotel bookings?

How can I find direct flights from Porto to Heathrow?

Can I find deals for business class flights from Porto to Heathrow?

What is the cheapest month to book a flight from Porto to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Browse other Porto and Heathrow flight options. Last updated on 30 September 2026.

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

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Can Cheapflights find flights from Porto to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Porto to Heathrow become cheaper?

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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 September 2026.

Best flights from Porto to Heathrow
Discover carefully curated flight deals from Porto to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Last-minute flights from Porto to Heathrow
Discover last-minute flight deals from Porto to Heathrow. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Porto to Heathrow
Search for one-way flight options from Porto to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Porto to London Heathrow Airport flights typically cost between £150 and £237 in December.
The cheapest return price found within the last 5 days was £98 on Vueling (15 Dec–16 Dec).