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Find cheap flights from Portugal to London Heathrow Airport from £39

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 12/6
Wed 19/6

Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to London, as well as popular online travel agencies
In the last 7 days, travellers have searched 41,771,603 times on KAYAK, and here's why:

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Flights to Heathrow - Travel Insights & Trends

Get data-powered insights and trends into flights to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to London Heathrow Airport?

These are the best prices found by users searching on KAYAK in the last 72 hours.
In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Porto, at £31 one-way and £54 return. The most popular connection is from Lisbon to London Heathrow Airport and KAYAK users have found return deals for as low as £67 in the last 3 days.

What is the cheapest day to fly to London?

The average price of all flights to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to London is Tuesday where tickets can be as cheap as £146. On the other hand, the most expensive day to fly is Sunday, where prices are £224 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to London Heathrow Airport is January, where tickets cost £107 on average for one-way flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Portugal is £220 and £202 respectively. For return trips, the best month to travel is January with an average price of £107.

What is the cheapest time of day to fly to London Heathrow Airport?

The average price for all flights to London Heathrow Airport depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to London Heathrow Airport is generally in the afternoon, when flights cost £110 on average. The most expensive time of day to fly to London Heathrow Airport is generally in the evening, which is peak travel time and where the average cost of a ticket is £182.

What is a good deal for flights to London Heathrow Airport?

If you’re looking for cheap airfare to London Heathrow Airport, 25% of our users found tickets to London Heathrow Airport for the following prices or less: From Lisbon £116 one-way - £124 return.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 78 days before departure.

Which airline offers the most flights to London Heathrow Airport?

Of the 2 airlines that fly to London Heathrow Airport, British Airways offers the most flights, with around 341 per week, followed by Loganair with 31 flights per week.

How long is the flight to London Heathrow Airport?

The duration of your flight to London depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to London on KAYAK are from Lisbon, which takes 2h 35m, Faro, which takes 2h 45m, Funchal, which takes 3h 40m, and Porto, which takes 4h 55m.

How many direct flights to London Heathrow Airport are there each day?

There are around 54 direct flights from within Portugal to London Heathrow Airport every day. Most flights depart in the morning, with 10:00 the most common departure time and 50% of flights departing in the morning.

How many direct flights to London Heathrow Airport are there each week?

Each week there are around 372 direct flights from within Portugal to London Heathrow Airport. The most common day for departures is Tuesday, with 16% of flights taking off on this day.

How many long-haul flights are there to London Heathrow Airport each week?

There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to London Heathrow Airport. Instead, there are 102 short-haul flights (up to 3 hour flight duration), with the most arriving from Lisbon.

How many cities have direct flights to London Heathrow Airport?

From Portugal, there are direct flights to London Heathrow Airport from 4 cities. The city with the most direct flights is Lisbon, with 80 direct flights each week.

Good to know - Cheap tickets from Portugal to London Heathrow Airport

Low season

July

High season

December

Cheapest flight

£39
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 29% lower on average.
Flight from Porto to London Heathrow Airport

FAQs - booking London Heathrow Airport flights

  • What is the cheapest flight to London Heathrow Airport?

    In the last 3 days, the cheapest flight deal to London Heathrow Airport was found on the route from Porto, at £31 one-way and £54 return. The most popular connection is from Lisbon to London Heathrow Airport and KAYAK users have found return deals for as low as £67 in the last 3 days.

  • How far is London Heathrow Airport from central London?

    The city centre of London is 14 miles from London.

  • How much is a flight to London?

    On average, a flight to London costs £200. The cheapest price found on KAYAK in the last 2 weeks cost £65 and departed from Faro Airport.

  • How does KAYAK find such low prices on flights to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to London Heathrow Airport

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London Heathrow Airport flight deals.

Prefer to fly direct to London Heathrow?

Find which airlines fly direct to Heathrow, which days they fly and book direct flights.

Direct departures

Portugal to London Heathrow

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights

Direct returns

London Heathrow to Portugal

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights
See more direct flights

Top 4 airlines serving from Portugal to Heathrow

 
See real verified KAYAK customer reviews for airlines flying to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to London. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
TAP AIR PORTUGALOverall score based on 2150 reviews
6.3Food
7.7Crew
6.4Entertainment
7.1Comfort
6.9Boarding
Airline reviews

Delayed takeoff was inconvenient. We should have boardrd later. Coffee/ beverage service on a 7:30 flight would have been good.

6.0 GoodAnonymous, May 2024LIS - SVQ
Read more about TAP AIR PORTUGAL reviews

Delayed takeoff was inconvenient. We should have boardrd later. Coffee/ beverage service on a 7:30 flight would have been good.

Flight from Lisbon to Barcelona was ok. Business flight Boston to Lisbon was awful. Attendants should pay more attention to Business Passengers and not be so stingy with water. Worse Business Flight I have ever taken. Food was awful. Cramped for space.

Adequate. You get what you pay for. Absolutely no frills but a cost effective way to travel between European countries.

Disastrous boarding. Entered air bridge only to descend stairs and enter a bus. Plane had insufficient storage, was old and chair recline was damaged. Air stewardess was sullen.

I wish to bring to your attention an incident involving a flight attendant that occurred on my recent journey. The attendant displayed a lack of courtesy, which was concerning. For instance, after accidentally spilling water on a passenger, the attendant dismissed the situation rather than offering a proper apology. Additionally, when I handed over my trash, the attendant reacted negatively because I placed a paper cup on the tray, she told me this doesn't go here and threw it back on my table. It was apparent that she was experiencing a challenging day, which unfortunately impacted the service provided to myself and other passengers. While I understand that everyone can have an off day, it is essential for customer-facing staff to seek support to manage personal stress without it affecting their professional responsibilities.

The flight crew was good, the flight itself was quick and comfortable

Boarding was late by 30 min due to a bus missing to take us to the plane... And then the flight was delayed by about 90 minutes, in a 60 min flight

Very agressive with bags both arrival and departures found minor damage to my luggage including my check bag being broken into nothing of value was in there so I do not believe anything was taken but definitely broken zipper into the outer pockets of suitcase

Everything was nearly perfect, and TAP staff were especially helpful when we missed our connecting flights and had to get on the next flight to Rome. The only aspect that could have been better was boarding: it was somewhat disorganized, which created a bit of stress. But in the end, everyone got on the plane, so the less-then-perfect boarding process did not take away from the overall excellent experience.

TAP Air makes you take a bus on arrival or departure, making it difficult for passengers to make connections.

Well Is extra charge for everything and other companies include that and the price.

Not great! Rude staff in London and the worse baggage reclaim I’ve ever seen. Great staff in flight but doubt I’ll fly with them again

You booked my 7 year old son to sit on his own without his mum and dad in s separate row between two unfriendly adult strangers. The plane was disgusting and dirty, aisles and everywhere sticky. The lounge waiting area was filthy carpet and had insufficient seats so we had to sit on it to wait for 35 minutes and my 7 year old sone played on this filthy lounge carpet. The outside of the plane appeared clean. The pilot was helpful with the route and what to expect weather etc.

Comfort isn’t a word one uses on economy airlines! Boarding was okay, delayed but okay, the flight was good, quick and time was made up.

The seat leg room seemed much tighter on the way home My cheese toasty wasn’t that hot - didn’t realise till half eaten

With stairs on a rainy tarmac, EasyJet flights are ok for younger travelers with backpack only. Seniors with mobility issues find it challenging 😰. However, the crew and disability assistance folks at both ends eased that discomfort as much as possible for their various roles. Kudos to airport and EasyJet employees for their kind service.

The flight boarded a little late but made up the time in flight - much appreciated. The staff were efficient and fairly friendly One of the toilets wasn’t working - having only one functioning toilet for a flight of hundreds isn’t really acceptable. I still find it amazing that the budget airlines can’t even offer free tap water to passengers.

Plane out was great, one back was cramped. Awful. Thankfully great crew!

Cons: "Delayed flight, once on board the aircraft, further delays on the ground (at Glasgow) made up time in the air landed (not too far from our original landing time) only to be told we’re now being held on the ground (at Gatwick for at least another 20 minutes!) I flew with BA this morning and rated them excellent for everything! EJ you need to up your game!"
Pros: "On time, smooth and professional"
Cons: "Nothing - the best part of this flight is that is so short :)"

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

It was ok, not as good as it used to be. The Heathrow connection was a disaster - complete anarchy, unknowledgable and skimpy assistance and signage. Gate crew at next flight was great, held the flight while my wife struggled through security.

It was great! The seats were comfortable, and they fed me during the transatlantic flight, something which I have been missing out on for the past 3 years as I travel to and from school.

The seats were uncomfortable. It was an old plane. The crew could have been more hospitable.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

I declined a wheelchair in Vienna as I was told it was a short walk. However, though I "boarded" the bus first, I was at the back when we got to the plane. There were steps up to the plane and no-one helped except the stewardess as I was near the top of the stairs. She found a better seat for me also.

Horrible connection in Heathrow on flight to destination. Flight missed due to delay on incoming flight. They did rebook us, and then that flight was delayed 2 hours. They don’t post gate info until 45 minutes to departure time which can cut it close if you have to take a tram to your terminal gate area. Then our return flight was completely cancelled. They notified us at 4:30AM. They rebooked us on a different airline and a different fare class. We were completely screwed. Travel day ended up being 30 hours. I will never fly them again.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

There's no inflight entertainment, plane was old, power USB didn't work

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The flight was delayed 5 hours and I'm and invalid,I wan a refund for this

The cabin crew on that flight were super fantastic and super helpful. They were so polite and considerate that i felt i travelled with a 5star airline.

Delayed delayed delayed - always with Wizzair. Staff were friendly and well mannered but clearly the company is unorganized and the aircrafts are outdated.

It's a budget airline. Great for short flight. Smooth landing.

4 hr delay and only told less than 2hrs before. Only given water and nuts on the flight as complimentary service. Left to wait in rain before boarding.

To be honest I did not like anything. Communication to why my flight was cancelled mid air 2 and half hours into my flight. Customer service desk were not helpful with providing information or a solution on what can be done.

I have been treated unacceptably by WizzAir aircraft crew in a previous flight, they threatened me and abused me, and I received an OFFICIAL written apology, but only two (2) months later. This flight had no such unacceptable behaviour, but it's not nice to be left waiting in the walkway (from gate to aircraft) for a long time, just so that the 'boarding' appears to be early, even if actual departure is not.

What I liked new airplane Sitting was extremely uncomfortable! Crew not smiley at all Always chewing gum

The flight was cancelled just 4 hours before the take off...

No food on board. Not comfortable. Had to move seats was delayed more than 3 hours.

Book cheap flights from Portugal to London

Recent return flight deals

 
These are the cheapest return flights to London found on KAYAK in the last 72 hours.
13/9Fri
directTAP AIR PORTUGAL
2h 40mLIS-LHR
15/9Sun
directTAP AIR PORTUGAL
2h 45mLHR-LIS
£67
1/10Tue
directTAP AIR PORTUGAL
2h 40mLIS-LHR
6/10Sun
directTAP AIR PORTUGAL
2h 40mLHR-LIS
£71
23/5Thu
1 stop
11h 20mOPO-LHR
4/6Tue
1 stop
5h 05mLHR-OPO
£136
1/10Tue
1 stop
11h 35mLIS-LHR
6/10Sun
direct
2h 45mLHR-LIS
£144
31/10Thu
directBritish Airways
2h 40mLIS-LHR
3/11Sun
directBritish Airways
2h 55mLHR-LIS
£148
10/6Mon
1 stopVueling
11h 15mOPO-LHR
17/6Mon
2 stopsVueling
22h 30mLHR-OPO
£156
4/6Tue
1 stopVueling
12h 20mLIS-LHR
11/6Tue
1 stopVueling
5h 10mLHR-LIS
£158
10/6Mon
1 stopSWISS
12h 40mOPO-LHR
17/6Mon
1 stopSWISS
11h 50mLHR-OPO
£159
28/5Tue
1 stopSWISS
12h 45mFAO-LHR
1/6Sat
1 stopSWISS
12h 20mLHR-FAO
£164
14/8Wed
directBritish Airways
2h 45mLIS-LHR
19/8Mon
directBritish Airways
2h 50mLHR-LIS
£208

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to London found on KAYAK in the last 72 hours.
4/7Thu
1 stop
7h 25mOPO-LHR
£39
2/7Tue
1 stop
6h 10mOPO-LHR
£42
2/10Wed
directTAP AIR PORTUGAL
2h 40mLIS-LHR
£43
20/9Fri
directTAP AIR PORTUGAL
2h 50mLIS-LHR
£46
16/7Tue
1 stopVueling
11h 35mLIS-LHR
£50
23/5Thu
directBritish Airways
2h 45mFAO-LHR
£50
22/7Mon
1 stopVueling
11h 15mOPO-LHR
£55
7/10Mon
1 stopIberia
11h 50mOPO-LHR
£66
25/5Sat
directBritish Airways
2h 45mFAO-LHR
£75
3/10Thu
1 stopIberia
9h 45mLIS-LHR
£80

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Last minute flights to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to London that are departing in the next 10 days.
18/5Sat
directBritish Airways
2h 45mLIS-LHR
18/5Sat
directBritish Airways
2h 50mLHR-LIS
£117
16/5Thu
directBritish Airways
2h 45mFAO-LHR
20/5Mon
directBritish Airways
2h 55mLHR-FAO
£187
16/5Thu
multi-stopTAP AIR PORTUGAL
4h 45mFAO-LHR
20/5Mon
multi-stopTAP AIR PORTUGAL
6h 45mLHR-FAO
£209
18/5Sat
multi-stopSWISS
26h 20mLIS-LHR
29/5Wed
multi-stopSWISS
6h 00mLHR-LIS
£212
16/5Thu
directTAP AIR PORTUGAL
2h 40mLIS-LHR
21/5Tue
directTAP AIR PORTUGAL
2h 45mLHR-LIS
£213
16/5Thu
multi-stopKLM
5h 45mLIS-LHR
21/5Tue
multi-stopKLM
5h 40mLHR-LIS
£218
18/5Sat
multi-stopAir France
9h 15mLIS-LHR
21/5Tue
multi-stopAir France
13h 05mLHR-LIS
£220
18/5Sat
multi-stopSWISS
13h 30mLIS-LHR
22/5Wed
multi-stopSWISS
6h 45mLHR-LIS
£236
16/5Thu
multi-stopKLM
5h 45mLIS-LHR
21/5Tue
multi-stopKLM
5h 40mLHR-LIS
£241
15/5Wed
multi-stopAir France
10h 55mLIS-LHR
19/5Sun
multi-stopAir France
7h 40mLHR-LIS
£365

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Flights to London Heathrow Airport

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Portugal

Cabin classes:

£1,212
£1,183
£81