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Cheap flights from Portugal to London Heathrow Airport from £43

LIS — LHR
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portugal to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Portugal to Heathrow

Tue 22/1208:45 -
1 stop11h 20m
Tue 5/109:55 -
1 stop10h 35m
Deal found 4/11£89
Sat 12/1219:50 -
Nonstop2h 50m
Sun 13/1206:00 -
Nonstop2h 50m
Deal found 31/10£107
Thu 24/1206:00 -
1 stop12h 15m
Thu 7/109:55 -
1 stop8h 25m
Deal found 3/11£113
Thu 24/1205:00 -
2 stops13h 15m
Thu 31/1220:50 -
1 stop11h 20m
Deal found 3/11£113
Thu 24/1221:55 -
1 stop22h 10m
Thu 31/1220:50 -
1 stop11h 20m
Deal found 4/11£114
Sat 7/1107:00 -
Nonstop2h 55m
Sat 14/1119:55 -
Nonstop2h 50m
Deal found 2/11£116
Tue 1/1206:20 -
1 stop13h 45m
Sat 12/1220:50 -
1 stop14h 10m
Deal found 3/11£117
Mon 21/1214:35 -
1 stop5h 30m
Wed 6/109:55 -
1 stop11h 20m
Deal found 3/11£118
Tue 1/1209:05 -
1 stop11h 00m
Sat 5/1216:15 -
1 stop7h 40m
Deal found 3/11£119
Sat 14/1119:50 -
Nonstop2h 50m
Sat 21/1116:15 -
1 stop7h 40m
Deal found 3/11£120
Fri 25/1214:35 -
1 stop5h 30m
Thu 31/1220:50 -
1 stop10h 10m
Deal found 3/11£120
Fri 4/1217:05 -
1 stop5h 35m
Sun 6/1218:30 -
1 stop15h 50m
Deal found 2/11£122

Find flight deals from Portugal to Heathrow

Round-trip from

£89

One-way from

£43

Popular in

August

Cheapest in

January

Average price

£48

Good round-trip deal

£239 or less

Good one-way deal

£56 or less
22/12-5/1
  • 22/12-5/1
  • 2 total stops
  • 21h 55m total
  • Portugal to London
Search Deals
15/12-31/12
  • 15/12-31/12
  • 1 total stop
  • 7h 55m total
  • Portugal to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
Search Deals
Price to beat on a round-trip flight from Portugal to London Heathrow.
Search Deals
Price to beat on a one-way flight from Portugal to London Heathrow.
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Cheapflights Fare Finder

 
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

Cheapest return flight

FaroLondon

FAO Faro - LHR London Heathrow

FAOLHR

Faro

Sun 20/12

11:10-17:30

1 stop6h 20m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£57
Fastest return journey

FaroLondon

FAO Faro - LHR London Heathrow

FAOLHR

Faro

Wed 14/4

20:00-22:40

Nonstop2h 40m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£62

FaroLondon

FAO Faro - LHR London Heathrow

FAOLHR

Faro

Tue 9/2

14:40-20:50

1 stop6h 10m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£66

FaroLondon

FAO Faro - LHR London Heathrow

FAOLHR

Faro

Wed 10/2

10:40-07:40

1 stop21h 00m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£66

FaroLondon

FAO Faro - LHR London Heathrow

FAOLHR

Faro

Mon 8/2

10:05-09:00

1 stop22h 55m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£66

FaroLondon

FAO Faro - LHR London Heathrow

FAOLHR

Faro

Sun 21/3

06:05-21:35

1 stop15h 30m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£68

LisbonLondon

LIS Lisbon Humberto Delgado - LHR London Heathrow

LISLHR

Lisbon Humberto Delgado

Tue 22/12

05:00-10:45

1 stop5h 45m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£69

LisbonLondon

LIS Lisbon Humberto Delgado - LHR London Heathrow

LISLHR

Lisbon Humberto Delgado

Fri 13/11

19:50-22:40

Nonstop2h 50m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£72

FunchalLondon

FNC Funchal Madeira - LHR London Heathrow

FNCLHR

Funchal Madeira

Fri 22/1

18:00-10:25

1 stop16h 25m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£73

FunchalLondon

FNC Funchal Madeira - LHR London Heathrow

FNCLHR

Funchal Madeira

Fri 15/1

18:00-12:05

1 stop18h 05m

London Heathrow

Wed 31/12

00:00-23:00

Nonstop0h 00m

£74

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Portugal to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Portugal with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Portugal to London Heathrow Airport

What is the cheapest month to book a flight from Portugal to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Portugal to London Heathrow Airport (average of £140). Flying from Portugal to London Heathrow Airport in July is currently the most expensive (average of £250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PT to LHR?

A simple way to save on the total cost of your ticket is to fly from Portugal to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 55% on your trip compared to booking a flight in the morning.

Weekly flight availability from Portugal to London Heathrow Airport

The most flights from PT0 to LHR are scheduled on a Tuesday (52 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (21 on average).

How often are flights from Portugal to London delayed?

About 21% of weekly flights between Portugal and London have experienced delays in the past year, with the average delay time being 109 minutes.

What is the most punctual flight time for Portugal to London flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Portugal to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 18% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from Portugal to London Heathrow Airport, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Travellers seeking maximum savings on their Portugal to London Heathrow Airport flight should consider departing on Sunday at midday when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with TAP AIR PORTUGAL and British Airways from Portugal to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
TAP AIR PORTUGAL
7.2
Good
2,394 reviews
Check prices

Entertainment

6.4

Comfort

7.2

Crew

7.8

Food

6.3

Boarding

7.1

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Scott,Oct 2026

LIS - MIA

I don't understand why an aircraft that arrived in Lisbon at 5;19am for a 10:35 flight was immediately delayed until 11am , then 11:17 am. Also, after being on the plane and taxiing for an hour, they discovered a computer error and we had to change planes. All in all we had a 5 1/2 hour delay. The boarding process for the second plane was chaos. They herded everyone out of the boarding area behind ropes, and then didn't announce anything over the loud speaker, but had a single agent yelling Premium only. Needless to say, there was pushing, yelling and confusion. On board, I have never experienced such a lazy, lethargic crew. We were in business class. We were not offered a drink or the usual bowl of nuts. We were given lunch about an hour into the trip. the food was mediocre at best. My friend, who had preordered the pasta dish over a week ago, was told that they were out of it and she could only have octopus, which she does not eat. Meanwhile, she saw 3 other passengers get pasta that they had not preordered. Shouldn't the pre orders be given priority? For the next 6 hours, we did not see a flight attendant, until they announced that they would not be serving another meal because they were "overworked". (same crew that was on the first aborted flight). Fortunately, I had to use the restroom and noticed a basket with sandwiches and some cookies. I asked the flight attendant if I could have one, and she said "of course, these are for you". Nobody let anybody know that there was food available., and no one was offered any drinks for 6 hours. I had to get up and ask for a bottle of water. Finally, they never came around to collect trash, so I left my trash at my seat. I will do everything in my power to not have to fly TAP again. Also, I think there is a law in Europe that passengers delayed more than 3 hours are entitled to some form of compensation. I will pursue this.
TAP AIR PORTUGAL
7.2
Good
2,394 reviews
TAP AIR PORTUGAL
7.2
Good
2,394 reviews
Check prices

Entertainment

6.4

Comfort

7.2

Crew

7.8

Food

6.3

Boarding

7.1

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Scott,Oct 2026

LIS - MIA

I don't understand why an aircraft that arrived in Lisbon at 5;19am for a 10:35 flight was immediately delayed until 11am , then 11:17 am. Also, after being on the plane and taxiing for an hour, they discovered a computer error and we had to change planes. All in all we had a 5 1/2 hour delay. The boarding process for the second plane was chaos. They herded everyone out of the boarding area behind ropes, and then didn't announce anything over the loud speaker, but had a single agent yelling Premium only. Needless to say, there was pushing, yelling and confusion. On board, I have never experienced such a lazy, lethargic crew. We were in business class. We were not offered a drink or the usual bowl of nuts. We were given lunch about an hour into the trip. the food was mediocre at best. My friend, who had preordered the pasta dish over a week ago, was told that they were out of it and she could only have octopus, which she does not eat. Meanwhile, she saw 3 other passengers get pasta that they had not preordered. Shouldn't the pre orders be given priority? For the next 6 hours, we did not see a flight attendant, until they announced that they would not be serving another meal because they were "overworked". (same crew that was on the first aborted flight). Fortunately, I had to use the restroom and noticed a basket with sandwiches and some cookies. I asked the flight attendant if I could have one, and she said "of course, these are for you". Nobody let anybody know that there was food available., and no one was offered any drinks for 6 hours. I had to get up and ask for a bottle of water. Finally, they never came around to collect trash, so I left my trash at my seat. I will do everything in my power to not have to fly TAP again. Also, I think there is a law in Europe that passengers delayed more than 3 hours are entitled to some form of compensation. I will pursue this.
British Airways
6.7
Okay
8,282 reviews
TAP AIR PORTUGAL
7.2
Good
2,394 reviews
Check prices

Entertainment

6.4

Comfort

7.2

Crew

7.8

Food

6.3

Boarding

7.1

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Scott,Oct 2026

LIS - MIA

I don't understand why an aircraft that arrived in Lisbon at 5;19am for a 10:35 flight was immediately delayed until 11am , then 11:17 am. Also, after being on the plane and taxiing for an hour, they discovered a computer error and we had to change planes. All in all we had a 5 1/2 hour delay. The boarding process for the second plane was chaos. They herded everyone out of the boarding area behind ropes, and then didn't announce anything over the loud speaker, but had a single agent yelling Premium only. Needless to say, there was pushing, yelling and confusion. On board, I have never experienced such a lazy, lethargic crew. We were in business class. We were not offered a drink or the usual bowl of nuts. We were given lunch about an hour into the trip. the food was mediocre at best. My friend, who had preordered the pasta dish over a week ago, was told that they were out of it and she could only have octopus, which she does not eat. Meanwhile, she saw 3 other passengers get pasta that they had not preordered. Shouldn't the pre orders be given priority? For the next 6 hours, we did not see a flight attendant, until they announced that they would not be serving another meal because they were "overworked". (same crew that was on the first aborted flight). Fortunately, I had to use the restroom and noticed a basket with sandwiches and some cookies. I asked the flight attendant if I could have one, and she said "of course, these are for you". Nobody let anybody know that there was food available., and no one was offered any drinks for 6 hours. I had to get up and ask for a bottle of water. Finally, they never came around to collect trash, so I left my trash at my seat. I will do everything in my power to not have to fly TAP again. Also, I think there is a law in Europe that passengers delayed more than 3 hours are entitled to some form of compensation. I will pursue this.

Related info for your journey

  • How long is the flight from Portugal to London Heathrow Airport?

    For as low as £142, TAP AIR PORTUGAL can have you in London Heathrow Airport from Portugal in 2h 55m. Airlines will cover a distance of 972 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Portugal to London Heathrow Airport one-way?

    For one-way options, check prices for Iberia. According to our data, you can fly for as low as £48. Users have also found prices from £56 and £65 on British Airways and KLM, respectively.

  • What are the most popular routes from Portugal to London Heathrow Airport?

    The most popular route from Portugal to London Heathrow Airport is Lisbon Humberto Delgado - London Heathrow. You may also consider Porto - London Heathrow or Faro - London Heathrow.

  • What are the most reliable airlines from Portugal to London Heathrow Airport?

    No one likes to see their flight delayed. When booking a flight from Portugal to London Heathrow Airport consider choosing Alaska Airlines (74%), Finnair (68%) or American Airlines (67%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portugal to London Heathrow Airport?

    On average you can expect to pay £341 for a flight from Portugal to London Heathrow Airport. The cheapest flight overall is £72 while the most popular route, (Lisbon Humberto Delgado - London Heathrow) is currently priced at £116.

  • Can I find deals for flights from Portugal to Heathrow that include hotel bookings?

    Yes. In addition to deals on Portugal to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Heathrow.

  • Can I find deals for business class flights from Portugal to Heathrow?

    Yes. Cheapflights offers flight deals from Portugal to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portugal to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Portugal to London Heathrow Airport (average of £140). Flying from Portugal to London Heathrow Airport in July is currently the most expensive (average of £250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

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Alternative routes for Portugal to Heathrow

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Duesseldorf Intl to London City flights
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Stuttgart to Heathrow flights
Beauvais-Tille to Gatwick flights
Frankfurt to Heathrow flights
Málaga to Heathrow flights
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Bruxelles-National to London City flights
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Top 2 airlines flying from Portugal to Heathrow

AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£126Average£200FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£134Average£219FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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How does Cheapflights help users find flights from Portugal to Heathrow?

Cheapflights makes it easy to find Portugal to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portugal to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Portugal.

Can Cheapflights find flights from Portugal to Heathrow with no change fees?

Yes, we can. To see specific flights from Portugal to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Portugal to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Portugal today and book when prices fit your budget.

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