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Cheap flights from Porto to London from £54

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 9/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Porto to London

Cheap return flights

Enter your travel dates to find the best prices.
Vueling Logo
19:20 - 14:45
OPO
-
LHR
19h 25m
1 stop
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
£117Vueling
Wed, 6 May - Sat, 9 May
Vueling Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
£126Vueling
Wed, 13 May - Fri, 29 May
Vueling Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
£130Vueling
Sat, 2 May - Sat, 9 May
Vueling Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
£130Vueling
Tue, 12 May - Wed, 13 May
Multiple Airlines Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Multiple Airlines Logo
09:55 - 06:50
LHR
-
OPO
20h 55m
1 stop
£133Multiple Airlines
Mon, 13 Apr - Wed, 22 Apr
Vueling Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Vueling Logo
09:55 - 16:10
LHR
-
OPO
6h 15m
1 stop
£135Vueling
Sat, 2 May - Tue, 12 May
Vueling Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
£136Vueling
Mon, 13 Apr - Wed, 15 Apr
Vueling Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
£137Vueling
Sat, 2 May - Tue, 12 May
Multiple Airlines Logo
18:35 - 09:10
OPO
-
LHR
14h 35m
1 stop
Multiple Airlines Logo
20:50 - 06:50
LHR
-
OPO
10h 00m
1 stop
£139Multiple Airlines
Tue, 14 Apr - Wed, 15 Apr
Multiple Airlines Logo
22:00 - 09:10
OPO
-
LHR
11h 10m
1 stop
Multiple Airlines Logo
20:50 - 06:50
LHR
-
OPO
10h 00m
1 stop
£140Multiple Airlines
Mon, 13 Apr - Tue, 21 Apr

SWISS flights from Porto to London Heathrow Airport

Our best SWISS deals on Porto to London Heathrow Airport flight tickets
SWISS
23 Apr
OPO12:15Porto
5h 35m
1 stop
LHR17:50London Heathrow
27 Apr
LHR20:05London Heathrow
11h 50m
1 stop
OPO07:55Porto
£154
SWISS
23 Apr
OPO08:40Porto
7h 45m
1 stop
LHR16:25London Heathrow
27 Apr
LHR20:05London Heathrow
11h 50m
1 stop
OPO07:55Porto
£155
SWISS
23 Apr
OPO08:40Porto
7h 45m
1 stop
LHR16:25London Heathrow
27 Apr
LHR20:05London Heathrow
11h 50m
1 stop
OPO07:55Porto
£156

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
3 Apr
OPO10:00Porto
8h 50m
1 stop
LHR18:50London Heathrow
6 Apr
LHR13:45London Heathrow
9h 15m
1 stop
OPO23:00Porto
£166
TAP AIR PORTUGAL
3 May
OPO05:05Porto
5h 15m
1 stop
LHR10:20London Heathrow
10 May
LHR18:45London Heathrow
5h 55m
1 stop
OPO00:40Porto
£169
TAP AIR PORTUGAL
21 Apr
OPO05:05Porto
7h 40m
1 stop
LHR12:45London Heathrow
23 Apr
LHR19:50London Heathrow
12h 00m
1 stop
OPO07:50Porto
£172

momondo Fare Finder

 
Customise your flight search to find flights from Porto to London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 23 March 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 6/5

19:20-14:45

1 stop19h 25m

London Heathrow

Sat 9/5

20:50-08:00

1 stop11h 10m

£117

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 13/5

22:00-09:10

1 stop11h 10m

London Heathrow

Fri 29/5

20:50-08:00

1 stop11h 10m

£126

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 2/5

22:00-09:10

1 stop11h 10m

London Heathrow

Sat 9/5

20:50-08:00

1 stop11h 10m

£130

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 12/5

22:00-09:10

1 stop11h 10m

London Heathrow

Wed 13/5

20:50-08:00

1 stop11h 10m

£130

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 13/4

22:00-09:10

1 stop11h 10m

London Heathrow

Wed 22/4

09:55-06:50

1 stop20h 55m

£133
Fastest return journey

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 2/5

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 12/5

09:55-16:10

1 stop6h 15m

£135

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 13/4

22:00-09:10

1 stop11h 10m

London Heathrow

Wed 15/4

20:50-08:00

1 stop11h 10m

£136

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 2/5

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 12/5

20:50-08:00

1 stop11h 10m

£137

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 14/4

18:35-09:10

1 stop14h 35m

London Heathrow

Wed 15/4

20:50-06:50

1 stop10h 00m

£139

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 13/4

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 21/4

20:50-06:50

1 stop10h 00m

£140

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

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 £154.

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

As of March 2026, prices for Porto to London Heathrow Airport flights are approximately 24% 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

Fastest flight time

4h 50m

Direct flights

None
The fastest flight from Porto to London Heathrow Airport takes 4h 50m
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.

Travelling to a place near London?

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

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

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