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Cheap flights from Porto to London from £43

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Porto to London

Cheap return flights

Enter your travel dates to find the best prices.
Vueling Logo
20:45 - 18:00OPO  Porto-LHR London Heathrow
21h 15m1 stop Bilbao
Vueling Logo
20:50 - 08:10LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£103Vueling
Tue, 3 Nov - Tue, 10 Nov
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21:55 - 09:10OPO  Porto-LHR London Heathrow
11h 15m1 stop Barcelona-El Prat
Vueling Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£108Vueling
Sat, 7 Nov - Sat, 14 Nov
Vueling Logo
21:55 - 09:10OPO  Porto-LHR London Heathrow
11h 15m1 stop Barcelona-El Prat
Vueling Logo
09:55 - 19:25LHR  London Heathrow-OPO Porto
9h 30m1 stop Barcelona-El Prat
£110Vueling
Sat, 28 Nov - Thu, 3 Dec
Vueling Logo
20:05 - 14:45OPO  Porto-LHR London Heathrow
18h 40m1 stop Bilbao
Vueling Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£110Vueling
Sat, 21 Nov - Mon, 23 Nov
Vueling Logo
21:55 - 09:10OPO  Porto-LHR London Heathrow
11h 15m1 stop Barcelona-El Prat
Vueling Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£111Vueling
Tue, 1 Dec - Sun, 6 Dec
Vueling Logo
21:55 - 09:10OPO  Porto-LHR London Heathrow
11h 15m1 stop Barcelona-El Prat
Vueling Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£112Vueling
Sat, 7 Nov - Sat, 14 Nov
Vueling Logo
08:45 - 20:05OPO  Porto-LHR London Heathrow
11h 20m1 stop Barcelona-El Prat
Vueling Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£115Vueling
Mon, 23 Nov - Sat, 28 Nov
Multiple Airlines Logo
22:05 - 09:10OPO  Porto-LHR London Heathrow
11h 05m1 stop Barcelona-El Prat
Multiple Airlines Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£116Multiple Airlines
Sat, 7 Nov - Sat, 14 Nov
Multiple Airlines Logo
05:00 - 17:15OPO  Porto-LHR London Heathrow
12h 15m2 stops Lisbon Humberto Delgado Madrid Barajas
Multiple Airlines Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£116Multiple Airlines
Tue, 3 Nov - Tue, 10 Nov
Vueling Logo
08:45 - 20:05OPO  Porto-LHR London Heathrow
11h 20m1 stop Barcelona-El Prat
Vueling Logo
09:55 - 21:15LHR  London Heathrow-OPO Porto
11h 20m1 stop Barcelona-El Prat
£118Vueling
Mon, 23 Nov - Sat, 28 Nov

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TAP AIR PORTUGAL flights from Porto to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Porto to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
12 Nov
OPO07:00Porto
5h 40m
1 stop
LHR12:40London Heathrow
15 Nov
LHR16:30London Heathrow
5h 30m
1 stop
OPO22:00Porto
£131
TAP AIR PORTUGAL
12 Nov
OPO11:00Porto
6h 30m
1 stop
LHR17:30London Heathrow
15 Nov
LHR19:55London Heathrow
14h 50m
1 stop
OPO10:45Porto
£132
TAP AIR PORTUGAL
6 Nov
OPO10:30Porto
7h 00m
1 stop
LHR17:30London Heathrow
8 Nov
LHR06:00London Heathrow
7h 30m
1 stop
OPO13:30Porto
£134

Air France flights from Porto to London Heathrow Airport

Our best Air France deals on Porto to London Heathrow Airport flight tickets
Air France
30 Sept
OPO05:55Porto
7h 50m
1 stop
LHR13:45London Heathrow
2 Nov
LHR08:55London Heathrow
13h 00m
1 stop
OPO21:55Porto
£163
Air France
30 Sept
OPO05:55Porto
7h 50m
1 stop
LHR13:45London Heathrow
2 Nov
LHR08:55London Heathrow
13h 00m
1 stop
OPO21:55Porto
£165
Air France
25 Sept
OPO05:55Porto
7h 50m
1 stop
LHR13:45London Heathrow
28 Sept
LHR15:20London Heathrow
6h 40m
1 stop
OPO22:00Porto
£193

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Tue 3/11

20:45-18:00

1 stop21h 15m

London Heathrow

Tue 10/11

20:50-08:10

1 stop11h 20m

£103

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 7/11

21:55-09:10

1 stop11h 15m

London Heathrow

Sat 14/11

09:55-21:15

1 stop11h 20m

£108
Fastest return journey

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 28/11

21:55-09:10

1 stop11h 15m

London Heathrow

Thu 3/12

09:55-19:25

1 stop9h 30m

£110

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 21/11

20:05-14:45

1 stop18h 40m

London Heathrow

Mon 23/11

09:55-21:15

1 stop11h 20m

£110

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Tue 1/12

21:55-09:10

1 stop11h 15m

London Heathrow

Sun 6/12

09:55-21:15

1 stop11h 20m

£111

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 7/11

21:55-09:10

1 stop11h 15m

London Heathrow

Sat 14/11

09:55-21:15

1 stop11h 20m

£112

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Mon 23/11

08:45-20:05

1 stop11h 20m

London Heathrow

Sat 28/11

09:55-21:15

1 stop11h 20m

£115

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Sat 7/11

22:05-09:10

1 stop11h 05m

London Heathrow

Sat 14/11

09:55-21:15

1 stop11h 20m

£116

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Tue 3/11

05:00-17:15

2 stops12h 15m

London Heathrow

Tue 10/11

09:55-21:15

1 stop11h 20m

£116

PortoLondon

OPO Porto - LHR London Heathrow

OPOLHR

Porto

Mon 23/11

08:45-20:05

1 stop11h 20m

London Heathrow

Sat 28/11

09:55-21:15

1 stop11h 20m

£118

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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?

Prices are currently low for flights on this route.

Typical prices usually range from £142 to £250.
The lowest price recently found on this route was £103.

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 £97. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Porto averaging around £153.

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

As of September 2026, prices for Porto to London Heathrow Airport flights are approximately 33% cheaper 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

Best price found

£43

Fastest flight time

4h 40m

Direct flights

None
The best one-way flight to London Heathrow Airport from Porto in the past 72 hours is £43. The best return flight deal from Porto to London Heathrow Airport found on momondo in the last 72 hours is £103.
The fastest flight from Porto to London Heathrow Airport takes 4h 40m
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

Frequently asked questions about flying from Porto to London Heathrow Airport

  • 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 40m.

  • 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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Wembley
Gatwick
Milton Keynes
Stratford-upon-Avon
Southend-on-Sea
Luton
Northampton
Slough
Ipswich
Swindon
Maidstone
Folkestone
Hastings
Ilford
Canterbury
Poole
Chichester
Salisbury
Hayes

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.

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