What is the cheapest airline that flies from Porto to London Heathrow?

Vueling, Iberia, and KLM are the most popular carriers operating from Porto to London Heathrow

How often are flights from Porto to London delayed?

Historically, on average around 7% of flights between Porto and London have experienced a delay on any given week. The average delay length over the past 12 months has been 74 minutes.

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

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

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

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

When did momondo last update prices for flights from Porto Airport to London Heathrow Airport?

Prices for flights from Porto Airport to London Heathrow Airport are refreshed on a daily basis.

How old do you have to be to fly from Porto Airport to London Heathrow Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£45 Cheap Flights from Porto to London Heathrow Airport in 2025/26

Q: What is the typical price of a round-trip flight between Porto and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from £156 to £221. The lowest price recently found on this route was £109.

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20:05 - 14:45OPO-LHR

18h 40m1 stop

15:15 - 07:55LHR-OPO

16h 40m1 stop

£109Vueling

Find Deal

Thu, 5 Mar - Sun, 8 Mar

20:05 - 14:45OPO-LHR

18h 40m1 stop

15:15 - 07:55LHR-OPO

16h 40m1 stop

£118Vueling

Find Deal

Thu, 15 Jan - Sun, 18 Jan

08:45 - 18:00OPO-LHR

9h 15m1 stop

09:55 - 21:15LHR-OPO

11h 20m1 stop

£127Vueling

Find Deal

Wed, 3 Dec - Wed, 10 Dec

12:25 - 17:15OPO-LHR

4h 50m1 stop

20:50 - 08:10LHR-OPO

11h 20m1 stop

£142Multiple Airlines

Find Deal

Sat, 10 Jan - Sat, 10 Jan

20:40 - 08:25OPO-LHR

11h 45m1 stop

19:40 - 06:50LHR-OPO

11h 10m1 stop

£145Multiple Airlines

Find Deal

Mon, 16 Mar - Wed, 18 Mar

11:15 - 17:00OPO-LHR

5h 45m1 stop

10:00 - 15:25LHR-OPO

5h 25m1 stop

£156KLM

Find Deal

Sat, 13 Dec - Tue, 16 Dec

11:25 - 16:35OPO-LHR

5h 10m1 stop

19:20 - 10:30LHR-OPO

15h 10m1 stop

£158Air France

Find Deal

Tue, 2 Dec - Tue, 9 Dec

11:15 - 20:50OPO-LHR

9h 35m1 stop

10:00 - 15:25LHR-OPO

5h 25m1 stop

£165KLM

Find Deal

Sun, 7 Dec - Tue, 16 Dec

18:00 - 11:25OPO-LHR

17h 25m1 stop

16:30 - 22:00LHR-OPO

5h 30m1 stop

£165TAP AIR PORTUGAL

Find Deal

Fri, 21 Nov - Sun, 23 Nov

12:00 - 17:30OPO-LHR

5h 30m1 stop

13:40 - 19:00LHR-OPO

5h 20m1 stop

£166TAP AIR PORTUGAL

Find Deal

Sat, 22 Nov - Mon, 24 Nov

Vueling flights from Porto to London Heathrow Airport

Our best Vueling deals on Porto to London Heathrow Airport flight tickets

Vueling

5 Mar

OPO20:05Porto

18h 40m

1 stop

LHR14:45London Heathrow

8 Mar

LHR15:15London Heathrow

16h 40m

1 stop

OPO07:55Porto

£109

Find similar

Vueling

15 Jan

OPO20:05Porto

18h 40m

1 stop

LHR14:45London Heathrow

18 Jan

LHR15:15London Heathrow

16h 40m

1 stop

OPO07:55Porto

£118

Find similar

Vueling

3 Dec

OPO08:45Porto

9h 15m

1 stop

LHR18:00London Heathrow

10 Dec

LHR09:55London Heathrow

11h 20m

1 stop

OPO21:15Porto

£127

Find similar

KLM flights from Porto to London Heathrow Airport

Our best KLM deals on Porto to London Heathrow Airport flight tickets

KLM

13 Dec

OPO11:15Porto

5h 45m

1 stop

LHR17:00London Heathrow

16 Dec

LHR10:00London Heathrow

5h 25m

1 stop

OPO15:25Porto

£156

Find similar

KLM

7 Dec

OPO11:15Porto

9h 35m

1 stop

LHR20:50London Heathrow

16 Dec

LHR10:00London Heathrow

5h 25m

1 stop

OPO15:25Porto

£165

Find similar

KLM

23 Dec

OPO11:15Porto

8h 00m

1 stop

LHR19:15London Heathrow

3 Jan

LHR06:30London Heathrow

8h 55m

1 stop

OPO15:25Porto

£171

Find similar

momondo 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

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 5/3

20:05-14:45

1 stop18h 40m

London Heathrow

Sun 8/3

15:15-07:55

1 stop16h 40m

£109

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 15/1

20:05-14:45

1 stop18h 40m

London Heathrow

Sun 18/1

15:15-07:55

1 stop16h 40m

£118

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 3/12

08:45-18:00

1 stop9h 15m

London Heathrow

Wed 10/12

09:55-21:15

1 stop11h 20m

£127

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 10/1

12:25-17:15

1 stop4h 50m

London Heathrow

Sat 10/1

20:50-08:10

1 stop11h 20m

£142

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 16/3

20:40-08:25

1 stop11h 45m

London Heathrow

Wed 18/3

19:40-06:50

1 stop11h 10m

£145

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 13/12

11:15-17:00

1 stop5h 45m

London Heathrow

Tue 16/12

10:00-15:25

1 stop5h 25m

£156

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 2/12

11:25-16:35

1 stop5h 10m

London Heathrow

Tue 9/12

19:20-10:30

1 stop15h 10m

£158

PortoLondon

OPO - LHR

OPOLHR

Porto

Sun 7/12

11:15-20:50

1 stop9h 35m

London Heathrow

Tue 16/12

10:00-15:25

1 stop5h 25m

£165

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 21/11

18:00-11:25

1 stop17h 25m

London Heathrow

Sun 23/11

16:30-22:00

1 stop5h 30m

£165

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 22/11

12:00-17:30

1 stop5h 30m

London Heathrow

Mon 24/11

13:40-19:00

1 stop5h 20m

£166

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Porto to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

What is the typical price of a round-trip flight between Porto and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, February is the cheapest month to fly from Porto to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £128. The month of June is another great option to travel to London Heathrow Airport, with average flight prices from Porto averaging around £144.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Porto is on a Thursday. momondo users have found tickets for Thursday departures for as low as £178. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Monday is £224.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Porto to London Heathrow Airport in the morning for as low as £119. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £192 on average. Flights to London Heathrow Airport from Porto in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How have Porto to London Heathrow Airport flight prices changed over time?

As of October 2025, prices for Porto to London Heathrow Airport flights are approximately 102% more expensive when compared to flights at the same time last year.

When to book flights from Porto to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Porto to London Heathrow Airport (OPO to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to London Heathrow Airport

Direct flights	None

There are no direct flights from Porto to London Heathrow Airport. There are no popular flight routes from Porto to London Heathrow Airport.

Search flight deals

How far is Porto to London Heathrow by plane?
The distance between Porto and London Heathrow is about 810.6 mi. A reasonable flight in good conditions will take 4h 50m.
When did momondo last update prices for flights from Porto Airport to London Heathrow Airport?
Prices for flights from Porto Airport to London Heathrow Airport are refreshed on a daily basis.
How old do you have to be to fly from Porto Airport to London Heathrow Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Northampton

Slough

Swindon

Canterbury

Stratford-upon-Avon

Southend-on-Sea

Ipswich

Ilford

Guildford

Poole

Swanage

Colchester

Dover

Hayes

Chelmsford

Why use momondo?

Why should I use momondo to find a flight deal from Porto to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Porto to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Porto to London with flexible booking policies on momondo?

Flights from Porto to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Porto to London?

Once all potential Porto to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Porto to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Porto and alert you when they change.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Start using Trips

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Cheap flights from Porto to London from £45

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to London departing on 16/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

Find the cheapest flights from Porto to London

Cheap return flights

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Cheap last-minute flights

Vueling flights from Porto to London Heathrow Airport

Our best Vueling deals on Porto to London Heathrow Airport flight tickets

KLM flights from Porto to London Heathrow Airport

Our best KLM deals on Porto to London Heathrow Airport flight tickets

momondo Fare Finder

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

See travel insights to London from

How to get the cheapest flight ticket from Porto to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Porto and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

How have Porto to London Heathrow Airport flight prices changed over time?

As of October 2025, prices for Porto to London Heathrow Airport flights are approximately 102% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Porto to London Heathrow?

Vueling, Iberia, and KLM are the most popular carriers operating from Porto to London Heathrow

How often are flights from Porto to London delayed?

Historically, on average around 7% of flights between Porto and London have experienced a delay on any given week. The average delay length over the past 12 months has been 74 minutes.

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

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

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

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

When to book flights from Porto to London Heathrow Airport

Cheap Porto to London Heathrow Airport (OPO to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to London Heathrow Airport

Direct flights

How far is Porto to London Heathrow by plane?

When did momondo last update prices for flights from Porto Airport to London Heathrow Airport?

How old do you have to be to fly from Porto Airport to London Heathrow Airport?

What documentation or ID do you need to fly to London Heathrow Airport?

Travelling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Porto to London?

Can I find flights from Porto to London with flexible booking policies on momondo?

How can momondo help me find flights from Porto to London?

I’m not ready to book a flight from Porto to London right now. Can momondo alert me if prices change?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo