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Cheap flights from Portugal to London from £41

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to London departing on 18/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Recent return flight deals from Portugal to London

TAP AIR PORTUGAL Logo
20:10 - 22:55LIS-LHR
2h 45mdirect
TAP AIR PORTUGAL Logo
19:50 - 22:35LHR-LIS
2h 45mdirect
£107TAP AIR PORTUGAL
Find Deal
Thu, 25 Sep - Mon, 29 Sep
TAP AIR PORTUGAL Logo
18:45 - 21:35LIS-LHR
2h 50mdirect
TAP AIR PORTUGAL Logo
18:30 - 21:15LHR-LIS
2h 45mdirect
£108TAP AIR PORTUGAL
Find Deal
Sat, 10 Jan - Tue, 13 Jan
Vueling Logo
22:05 - 09:10LIS-LHR
11h 05m1 stop
Vueling Logo
09:55 - 20:35LHR-LIS
10h 40m1 stop
£113Vueling
Find Deal
Tue, 16 Sep - Tue, 23 Sep
Vueling Logo
21:55 - 09:10OPO-LHR
11h 15m1 stop
Vueling Logo
18:50 - 08:10LHR-OPO
13h 20m1 stop
£125Vueling
Find Deal
Sat, 13 Dec - Fri, 9 Jan
British Airways Logo
10:40 - 13:40LIS-LHR
3h 00mdirect
British Airways Logo
06:55 - 09:50LHR-LIS
2h 55mdirect
£126British Airways
Find Deal
Wed, 12 Nov - Wed, 19 Nov
British Airways Logo
15:50 - 18:35LIS-LHR
2h 45mdirect
British Airways Logo
09:10 - 12:05LHR-LIS
2h 55mdirect
£127British Airways
Find Deal
Fri, 28 Nov - Tue, 2 Dec
Logo
22:05 - 09:10LIS-LHR
11h 05m1 stop
Logo
19:50 - 22:35LHR-LIS
2h 45mdirect
£128
Find Deal
Tue, 16 Sep - Tue, 23 Sep
Logo
22:10 - 09:10LIS-LHR
11h 00m1 stop
Logo
19:50 - 22:35LHR-LIS
2h 45mdirect
£136
Find Deal
Fri, 19 Sep - Mon, 22 Sep
KLM Logo
16:10 - 20:50OPO-LHR
4h 40m1 stop
KLM Logo
10:00 - 15:25LHR-OPO
5h 25m1 stop
£159KLM
Find Deal
Mon, 22 Dec - Tue, 6 Jan
KLM Logo
16:10 - 20:50OPO-LHR
4h 40m1 stop
KLM Logo
08:40 - 15:25LHR-OPO
6h 45m1 stop
£175KLM
Find Deal
Fri, 16 Jan - Sun, 18 Jan

TAP AIR PORTUGAL flights from Portugal to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Portugal to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
25 Sept
LIS20:10Lisbon Humberto Delgado
2h 45m
LHR22:55London Heathrow
29 Sept
LHR19:50London Heathrow
2h 45m
LIS22:35Lisbon Humberto Delgado
£107
Find similar
TAP AIR PORTUGAL
10 Jan
LIS18:45Lisbon Humberto Delgado
2h 50m
LHR21:35London Heathrow
13 Jan
LHR18:30London Heathrow
2h 45m
LIS21:15Lisbon Humberto Delgado
£108
Find similar
TAP AIR PORTUGAL
25 Sept
LIS20:10Lisbon Humberto Delgado
2h 45m
LHR22:55London Heathrow
29 Sept
LHR19:50London Heathrow
2h 45m
LIS22:35Lisbon Humberto Delgado
£110
Find similar

KLM flights from Portugal to London Heathrow Airport

Our best KLM deals on Portugal to London Heathrow Airport flight tickets
KLM
22 Dec
OPO16:10Porto
4h 40m
1 stop
LHR20:50London Heathrow
6 Jan
LHR10:00London Heathrow
5h 25m
1 stop
OPO15:25Porto
£159
Find similar
KLM
16 Jan
OPO16:10Porto
4h 40m
1 stop
LHR20:50London Heathrow
18 Jan
LHR08:40London Heathrow
6h 45m
1 stop
OPO15:25Porto
£175
Find similar
KLM
26 Aug
FAO20:35Faro
11h 05m
1 stop
LHR07:40London Heathrow
2 Sept
LHR17:10London Heathrow
14h 50m
1 stop
FAO08:00Faro
£177
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Portugal 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 1 August 2025.
Use the filters below to find and compare flights from Portugal to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 25/9

20:10-22:55

Nonstop2h 45m

London Heathrow

Mon 29/9

19:50-22:35

Nonstop2h 45m

£107

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Sat 10/1

18:45-21:35

Nonstop2h 50m

London Heathrow

Tue 13/1

18:30-21:15

Nonstop2h 45m

£108

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Tue 16/9

22:05-09:10

1 stop11h 05m

London Heathrow

Tue 23/9

09:55-20:35

1 stop10h 40m

£113

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 13/12

21:55-09:10

1 stop11h 15m

London Heathrow

Fri 9/1

18:50-08:10

1 stop13h 20m

£125

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Wed 12/11

10:40-13:40

Nonstop3h 00m

London Heathrow

Wed 19/11

06:55-09:50

Nonstop2h 55m

£126

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Fri 28/11

15:50-18:35

Nonstop2h 45m

London Heathrow

Tue 2/12

09:10-12:05

Nonstop2h 55m

£127

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Tue 16/9

22:05-09:10

1 stop11h 05m

London Heathrow

Tue 23/9

19:50-22:35

Nonstop2h 45m

£128

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Fri 19/9

22:10-09:10

1 stop11h 00m

London Heathrow

Mon 22/9

19:50-22:35

Nonstop2h 45m

£136

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 22/12

16:10-20:50

1 stop4h 40m

London Heathrow

Tue 6/1

10:00-15:25

1 stop5h 25m

£159

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 16/1

16:10-20:50

1 stop4h 40m

London Heathrow

Sun 18/1

08:40-15:25

1 stop6h 45m

£175

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Portugal 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 cheapest month to fly to London Heathrow Airport?

In general, March is the cheapest month to fly from Portugal to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £119. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Portugal averaging around £121.

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 Portugal is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £165. 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 £277.

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 at midday. momondo users have found flights departing from Portugal to London Heathrow Airport at midday for as low as £150. 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 morning when prices are £231 on average. Flights to London Heathrow Airport from Portugal in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Portugal to London Heathrow flight route?

Fly from Faro to London Heathrow for the best Portugal - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £170 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Portugal for as low as £118 on momondo.

What cabin class options are available on Portugal to London Heathrow flights?

There are 2 cabin classes available to choose from on Portugal to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portugal to London Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Portugal to London Heathrow Airport.

Cheap Portugal to London Heathrow Airport flight deals and tips

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

Best price found

£41

Fastest flight time

2h 40m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun
The best one-way flight to London Heathrow Airport from Portugal in the past 72 hours is £41. The best return flight deal from Portugal to London Heathrow Airport found on momondo in the last 72 hours is £107.
The fastest flight from Portugal to London Heathrow Airport takes 2h 40m
Direct flights go from Portugal to London Heathrow Airport on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: TAP AIR PORTUGAL and British Airways..
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  • When did momondo last update prices for flights from Portugal to London Heathrow Airport?

    Prices for flights from Portugal to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Portugal to London Heathrow Airport?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to London Heathrow Airport.

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

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Portugal to London Heathrow Airport?

Best airlines flying from Portugal to London Heathrow Airport

Compare and see reviews for airlines that fly from Portugal to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
easyJetPriceFrom £50Free CancellationRating
6.9
1,822 reviews
Search easyJet flights
TAP AIR PORTUGALPriceFrom £98Free CancellationRating
7.1
1,933 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom £113Free CancellationRating
6.6
7,222 reviews
Search British Airways flights

Travelling to a place near London?

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Salisbury

Why use momondo?

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

It is quick and easy to find Portugal to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

Yes. momondo enables you to select and highlight flights to London from Portugal with this policy.

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

momondo provides multiple filters to help you find the best flight to London from Portugal. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to London from Portugal are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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