£51 Find Cheap Flights from London Heathrow Airport to Portugal – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Portugal departing on 21/9. 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
1 adult, Economy, 0 bags

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Portugal

Cheapest return prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop£129
Faro
Faro1 stop£114
Porto
Porto1 stop£106
Funchal
Funchal1 stop£177
Ponta Delgada
Ponta Delgadadirect£347
Lajes
Lajes1 stop£237
Porto Santo
Porto Santo1 stop£275
Pico Island
Pico Island1 stop£281
Horta
Horta2 stops£381
Vila do Porto
Vila do Porto2 stops£517
Lisbon
Lisbon1 stop£129
Faro
Faro1 stop£114
Porto
Porto1 stop£106
Funchal
Funchal1 stop£177
Ponta Delgada
Ponta Delgadadirect£347
Lajes
Lajes1 stop£237
Porto Santo
Porto Santo1 stop£275
Pico Island
Pico Island1 stop£281
Horta
Horta2 stops£381
Vila do Porto
Vila do Porto2 stops£517

Book Cheap Heathrow to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Portugal

Sat, 26 Sep - Tue, 29 Sep
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
Vueling Logo
20:15 - 14:45
OPO
-
LHR
18h 30m
1 stop
£106Vueling
Sat, 26 Sep - Tue, 29 Sep
Vueling Logo
20:50 - 08:00
LHR
-
OPO
11h 10m
1 stop
Vueling Logo
20:15 - 14:45
OPO
-
LHR
18h 30m
1 stop
£108Vueling
Sat, 10 Oct - Tue, 13 Oct
TAP AIR PORTUGAL Logo
13:45 - 23:50
LHR
-
FAO
10h 05m
1 stop
TAP AIR PORTUGAL Logo
18:15 - 12:45
FAO
-
LHR
18h 30m
1 stop
£114TAP AIR PORTUGAL
Mon, 23 Nov - Mon, 30 Nov
Iberia Logo
19:40 - 07:40
LHR
-
OPO
12h 00m
1 stop
Iberia Logo
20:40 - 18:15
OPO
-
LHR
21h 35m
1 stop
£117Iberia
Sat, 23 Jan - Sat, 6 Feb
Iberia Logo
11:25 - 20:00
LHR
-
OPO
8h 35m
1 stop
Iberia Logo
20:40 - 08:25
OPO
-
LHR
11h 45m
1 stop
£117Iberia
Mon, 21 Sep - Tue, 29 Sep
Multiple Airlines Logo
20:50 - 09:45
LHR
-
FAO
12h 55m
1 stop
Multiple Airlines Logo
18:15 - 22:55
FAO
-
LHR
4h 40m
1 stop
£121Multiple Airlines
Mon, 28 Sep - Mon, 5 Oct
Multiple Airlines Logo
20:50 - 09:45
LHR
-
FAO
12h 55m
1 stop
Multiple Airlines Logo
18:10 - 10:20
FAO
-
LHR
16h 10m
1 stop
£126Multiple Airlines
Wed, 16 Dec - Wed, 27 Jan
British Airways Logo
06:55 - 09:50
LHR
-
LIS
2h 55mdirect
British Airways Logo
12:55 - 15:50
LIS
-
LHR
2h 55mdirect
£132British Airways
Thu, 1 Oct - Sun, 4 Oct
TAP AIR PORTUGAL Logo
06:00 - 00:40
LHR
-
OPO
18h 40m
1 stop
TAP AIR PORTUGAL Logo
21:15 - 12:45
OPO
-
LHR
15h 30m
1 stop
£134TAP AIR PORTUGAL
Wed, 21 Oct - Fri, 23 Oct
British Airways Logo
16:15 - 19:10
LHR
-
FAO
2h 55mdirect
British Airways Logo
16:55 - 19:40
FAO
-
LHR
2h 45mdirect
£135British Airways
Booking Insights

KAYAK's insights & trends for Heathrow to Portugal flights

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

What is the cheapest London Heathrow Airport to Portugal flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Portugal from London Heathrow Airport found in the last 5 days was to Lisbon, at £160 return. The most popular route is from London Heathrow Airport (LHR) to Lisbon (LIS), and the cheapest return airline ticket found on this route in the last 5 days was £160.

What is the cheapest time of day to fly to Portugal?

The average price for all round-trip flights from London Heathrow Airport to Portugal depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Portugal is generally at night, when retur flights cost £254 on average. Morning departures are around 7% more expensive than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the morning, which is peak travel time and where the average cost of a ticket is £347.

Can I save money by flying with a stopover from London Heathrow Airport to Portugal?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of £347, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Portugal, 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 from London Heathrow Airport to Portugal is February, when tickets cost £150 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of return tickets is £279 and £257 respectively.

What’s the cheapest day of the week to fly from London Heathrow Airport to Portugal?

The average price of all round-trip flights from London Heathrow Airport to Portugal clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Portugal on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Tuesday is the most expensive day to fly from London Heathrow Airport to Portugal. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Portugal, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from London Heathrow Airport to Portugal, you should book around 5 weeks before departure, which saves you about 29% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

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

Low season

January

Cheapest flight

£51
Best time to beat the crowds (31% less expensive on average)
Most popular time to fly (34% more expensive on average)
Flight from London Heathrow Airport to Faro

Flights from Heathrow to Portugal: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Heathrow to Portugal 
ZakFlew with TAP AIR PORTUGAL
LHR
-
LIS
Mar 2025
Don't bother with business if you are flying out of LHR before 06:30 as the lounges and fast track security only open at 06:00 so you will not have time to use them. For short haul European flights this is most of the benefit of going business class. Hand luggage only is better with a large rucksack (30-40L) instead of a case with wheels is possible as gate agents will usually check cases with wheels on full flights and your rucksack is less likely to be gate checked.
LiannFlew with British Airways
LHR
-
LIS
Aug 2024
Keep liquids altogether because you have to place it in a plastic bag from them
KFlew with TAP AIR PORTUGAL
LHR
-
LIS
Apr 2024
Huge queues at Lisbon airport. Literally anywhere. Make sure you leave plenty of time for everything.

FAQs - booking Portugal flights

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

    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 from London Heathrow Airport to Portugal.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from London Heathrow Airport to Portugal 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 from London Heathrow Airport to Portugal?

    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 from London Heathrow Airport to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Heathrow to Portugal

 
Need help choosing which airline to fly with from Heathrow to Portugal? 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.
7.2
TAP AIR PORTUGALOverall score based on 2351 reviews
7.1Comfort
7.8Crew
6.3Food
6.4Entertainment
7.0Boarding
Airline reviews

They blocked me from checking in online and they charged me lots of money

2.0 MediocreAnonymous, Jul 2026
EWR - OPO
Read more TAP AIR PORTUGAL reviews

They blocked me from checking in online and they charged me lots of money

Everything was good with Tap Air Portugal. It was Logan Airport that was a problem. The fuel system was down and delayed my 10:40 boarding. I wasn't able to board my flight until 2:00 am...after that my flights were great.

Seats had no charging ports. Our plane was rerouted to Boston and we were landed on the tarmac with no food or water for 3 hours (illegal). We then waited in the airport for 3 hours while staff had no information regarding where our bags were or when we were going to get them.

Very poor communications during flight. Our flight was diverted with no communication. We waited for hours in the terminal for word on how we would get to Newark No chargers on the plane Won’t be flying them again

Bad boarding, threat to force bag check mid journey, lines, late, buses, more waiting awful end to end.

Terrible! I had to cancel our flights due to my wife Carmen requiring an unexpected second cancer surgery. I first contacted orbitz about obtaining a credit due to medical interruption and orbitz directed me to TAP. I contacted TAP and the representative directed me back to orbitz and refused to even explain what TAP’s medical interruption policy was or how it worked—I wanted that information for a second call to orbitz. Terrible service at a particularly difficult time.

Checkin was very slow, we had checked in online and hoping we could do a bag drop at the airport. However everyone with checked bags had to queue up and it took over 40mins. Our advice arrive extra early or you will be rushing to the gate.

Was a cheap flight and it got me to Portugal on time. For economy there was ample leg room and the flight attendants were pleasant and helpful.

The staff were great - very friendly and chatty. I checked in online at 9.30am, when check in had opened at 1.30am, and choices were already very limited, so act fast.

I suspect that there was an item pilfered from my bag at the TAP automated check-in counter on March 26th at Heathrow Airport around 11:30am. I think that the employee assisting me with my bags took something out of it when I was not paying attention because today, March 27th there is a notebook missing. Please check the camera to see if indeed this occurred. My description: Male, African Decent, 5'8, 180lbs medium build, wearing trousers and a jacket. Employee description: Female, Indian Decent (guessing) 5'7, slight build. Flight 1359, London to Lisbon.

There was confusion over the electric wheelchair. Though it was categorized and double checked at checking the gate seemed confused by the chair.

Boarding was a mad rush as people still had issues with boarding passes and groups 3- 7 were asked to board when travelers were still stuck behind the document check. Food was one of the worst I’ve ever had in an Economy flight. The crew was very friendly though

We were delayed 2 hours because the crew was late. They need better planning by the crew, we had to sit in uncomfortable seats waiting for them.

Difficulty to check in online, but well handled at the airport. Flight delay was unfortunate. Crew was adequate but not what we have usually experienced from BA. Seat was not comfortable.

Charging $300 to be able to pick a seat next to your wife was nothing less than extortion.

I’m very mad because I paid an extra $105 to change seats to an exit row with more leg room. The app clearly showed a gap in between the seats in the row I changed my seat to and I paid for it. When I boarded the plane, it wasn’t an exit row seat and no more room than my original seat. I feel like I was ripped off $105.

I had a great experience , crew was great and enjoyed the entertainment options I will be booking my next International trip with them .

Front desk was closed at 6 pm, I was unable to get my boarding pass and as such missed my connecting flight home.

Overall a great. However, the seating is way too narrow, for guys with any shoulder width. Luckily the crew moved the guy next to me, or it would have been miserable.

The plane was not well maintained. The entertainment system didn’t work properly, eg moving map. Many of the seat controls did not work. Cabin temperature fluctuated considerably during the flight. The seat allocated was poor, it was noisy and offered no privacy. The perfume in the toilet triggered severe allergies. Crew was very goid.

There was no useful information given regarding the flight back to the UK from Tenerife. This despite the week publicised problems around the EES system and the delays caused to boarding. This aspect of the customer experience could have been much better.

Fast boarding, smooth takeoff and landing. plenty of space in seats. Excellent air-conditioning on a hot day. Perfect experience

Sitting on the last row in between the aisle and a massive person, all people going to the bathroom bumped into me including the flight attendants.

The best budget airline in Europe. Flight was on time, crew friendly and worked hard during flight and were able to meet our needs. Only downside (not the airline's fault), there were no rear steps.

It was transportation nothing more. I will give a positive rating over Ryanair. We missed our Ryanair flight the night before and received rude and unconcerned treatment from the Ryanair customer service. It was late. We were very tired and stressed after doing our best to get to the airport. The so called customer service ladies were completely unconcerned from the start. Aside from that, the flight to London seemed to be their opportunity for advertising. No time to relax as attendants were constantly in the aisle selling. I will never fly Ryanair again!!

Would not advise EasyJet for a 5 hour flight…small plane and hence a lot of turbulence. No inflight entertainment so struggle to pass time in cramped seats. We also fell victim to extra charge for our cabin bags, although bag dimensions were ok, but the handle was rigid and slightly fell outside their testing cage!!….never again will we fly with this airline and be party to their scams for making money!

The food and so are to expensive and old . Crew whas not very friendly . Apparently some other passenger can just Push through the waiting people to board while almost punching me and a father with a child down the stairs. Its always something with easy jet . The seats of row 26 where lose . And for a guy of my size there is absolutely no leg room at all .

Very pleasant crew, working hard on a full plane. Delay by a broken seat. However crew made back 60% of the delay.

The pilot did everything possible to make up the 35 minute delay. His communications were honest, prompt and positive throughout.

Staff were lovely. Seats could be wider/ more comfortable and late taking off

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

I did not like that they failed to put my luggage on my connecting flight to Athens. I was promised it would be located and delivered within 2 days but later told there was no information on its location. This caused me to have unplanned for expenses because I then had to purchase new clothing to wear on my vacation. I did not receive my luggage until my return flight home. I will not be traveling with them again.

No internet, very narrow seats insufficient room for three passengers with encroachment.

Other than problems with checking in and uploading passport info everything was great. It would be nice to be able to manually input passport info. Often while traveling the bandwidth has problems uploading pictures

Give at least coffee or juice as it is an international flight.

Tiny, cramped seats with minimum leg room and hard armrests. Basic needs like a seat and luggage came with an additional charge. Budget airline amenities with premium airlune cost. I won't use this airline again.

Not good because in this cancelled and then rebooked flight BA put me and my husband in both middle seats when we were originally seated together in original flight and i was in aisle. I hate sitting in the middle. BA food needs to be better. It was just ok. Thanks though to screw and everyone one for safe flight

It was not British Air, we were put onto Air Portugal for our London to Lisbon leg.

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

The on flight entertainment system touch screen system and the USB charger did not work on multiple seats on least 4 seats an in different rows. The attendant tried to reset the system but was un successful. I couldn't change my phone to get my ticket for my next flight. This was an international flight I changed seats and the problem was the same. the flight attendant offered his power bank

Business class was nothing more than Economy with middle seat empty. Uncomfortable seat and leg room. A mom behind me had a 18 month/2 yr old on her lap, who had his feet on my back all the time- while middle seat remained empty. Pretty much not worth the fare. Very disappointed.

Once again I purchase a business class ticket and the seat is exactly the same as cattle class, the only difference being is that BA install a janky table over the middle seat so there is somewhere to place your complimentary drink, the tray table is just big enough for the small tray, so if you are not concerned about getting fed and watered on the plane or getting access to the BA lounge I would save your money and fly cattle, PS the cabin crew were exceptional in every way, shame about the equipment

When bussing people to/from the gate, don't pack everyone in like a can of sardines and don't send the bus on its way if the plane isn't ready. Waited for about 40 minutes packed in this bus...both ways!

A Perfect 2.5 hr flight. No amenities, but we did not expect any.

Delayed flight by 45 minutes. Need a refund to compensate for the subsequent itinerary changes

The flight was delayed and absolutely packed, we had to dispach our hand luggage which contained some fragile items, luckly nothing was damaged.

Everything you need to know for your flight from Heathrow to Portugal

Information on your arrival and departure airports