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Cheap flights from Portugal to London Heathrow Airport from £46

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LHR
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portugal to Heathrow

Keep the following information in mind while searching for Portugal to Heathrow flight deals. Data was last updated 27 November 2025.

Round-trip from

£105

One-way from

£46

Popular in

August

Cheapest in

January

Average price

£37

Good round-trip deal

£164 or less

Good one-way deal

£94 or less
Vueling
  • Vueling
  • 16/1-23/1
  • 2 total stops
  • 52h 25m total
  • Portugal to London
Search Deals
Vueling
  • Vueling
  • 2/3
  • 1 total stop
  • 18h 40m total
  • Portugal to London
Search Deals
Highest demand for flights based on searches. 33% potential increase in price (£26 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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.
Search Deals

Find flight deals from Portugal to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Portugal to Heathrow
Explore the most affordable flight options available from Portugal to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 November 2025.

Thu 4/1210:40LIS - LHR
Nonstop3h 00mBritish Airways
Sat 6/1207:10LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 25/11£106
Thu 25/1206:35LIS - LHR
Nonstop2h 45mBritish Airways
Thu 1/107:00LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 25/11£126
Thu 18/1212:55LIS - LHR
Nonstop2h 55mBritish Airways
Tue 6/116:00LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 25/11£127
Sat 13/1218:40LIS - LHR
Nonstop2h 45mBritish Airways
Sun 11/109:15LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 25/11£127
Wed 3/1219:50LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Sat 6/1208:15LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 25/11£129
Fri 5/1211:15FAO - LHR
1 stop6h 15mTAP AIR PORTUGAL
Sun 7/1213:40LHR - FAO
1 stop10h 10mTAP AIR PORTUGAL
Deal found 26/11£135
Thu 4/1206:05FAO - LHR
1 stop5h 20mTAP AIR PORTUGAL
Sun 7/1213:40LHR - FAO
1 stop10h 10mTAP AIR PORTUGAL
Deal found 26/11£138
Tue 23/1210:35LIS - LHR
Nonstop3h 00mBritish Airways
Tue 30/1206:55LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 25/11£142
Wed 3/1206:30LIS - LHR
1 stop8h 25mMultiple Airlines
Thu 4/1206:00LHR - LIS
Nonstop2h 45mMultiple Airlines
Deal found 25/11£142
Wed 24/1206:00OPO - LHR
1 stop9h 50mMultiple Airlines
Wed 31/1206:50LHR - OPO
1 stop5h 15mMultiple Airlines
Deal found 26/11£144
Sun 21/1215:55LIS - LHR
Nonstop2h 45mBritish Airways
Thu 25/1219:05LHR - LIS
Nonstop2h 45mBritish Airways
Deal found 25/11£145
Wed 17/1212:25OPO - LHR
1 stop4h 50mMultiple Airlines
Tue 30/1206:00LHR - OPO
1 stop7h 05mMultiple Airlines
Deal found 25/11£145

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portugal to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 27 November 2025.
Use the filters below to find and compare flights from Portugal to London Heathrow Airport that are best for you.

Fly from

Portugal

Fly to

Heathrow

Route

Depart

Return

Price

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 30/1

11:15-17:30

1 stop6h 15m

London Heathrow

Tue 3/2

06:00-10:25

1 stop4h 25m

£116

FaroLondon

FAO - LHR

FAOLHR

Faro

Sat 10/1

11:15-18:55

1 stop7h 40m

London Heathrow

Sat 17/1

06:00-15:45

1 stop9h 45m

£117

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 9/1

11:15-18:55

1 stop7h 40m

London Heathrow

Fri 16/1

13:40-23:50

1 stop10h 10m

£117

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 12/3

20:05-14:45

1 stop18h 40m

London Heathrow

Sun 15/3

15:15-07:55

1 stop16h 40m

£121

FaroLondon

FAO - LHR

FAOLHR

Faro

Wed 28/1

11:15-22:40

1 stop11h 25m

London Heathrow

Mon 2/2

06:00-23:50

1 stop17h 50m

£123

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 26/2

07:00-10:00

Nonstop3h 00m

London Heathrow

Sun 1/3

09:15-12:10

Nonstop2h 55m

£125

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Sun 21/12

15:55-18:40

Nonstop2h 45m

London Heathrow

Wed 31/12

06:55-09:50

Nonstop2h 55m

£127

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 19/3

20:05-14:45

1 stop18h 40m

London Heathrow

Sun 22/3

15:15-07:55

1 stop16h 40m

£127

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Fri 23/1

07:05-10:05

Nonstop3h 00m

London Heathrow

Mon 26/1

06:55-09:50

Nonstop2h 55m

£127

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 15/1

07:00-10:00

Nonstop3h 00m

London Heathrow

Sun 18/1

07:00-09:55

Nonstop2h 55m

£127

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 60 results
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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, December is the cheapest month in which you can book a flight from Portugal to London Heathrow Airport (average of £58). Flying from Portugal to London Heathrow Airport in July is currently the most expensive (average of £114). 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?

Find hourly flight availability from Portugal to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 November 2025.

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 38% on your trip compared to booking a flight at midday.

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

Use this chart to determine the cheapest time to fly return from Portugal to Heathrow. Price data was last updated on 26 October 2025.

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

Weekly flight availability from Portugal to London Heathrow Airport

Explore weekly flight availability from Portugal to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 27 November 2025.

The most flights from PT0 to LHR are scheduled on a Monday (49 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

How often are flights from Portugal to London delayed?

About 27% of weekly flights between Portugal and London have experienced delays in the past year, with the average delay time being 111 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?

Tuesday 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 23% of flights being delayed.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 27 November 2025.
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
7.1
Good
2,075 reviews
Check prices

Comfort

7.1

Crew

7.8

Overall

7.1

Food

6.2

Entertainment

6.3

Boarding

7.0

Reviews

1 / 20
6.0
Good

Delsy,Aug 2025

LIS - MIA

Boarding was a hassle. When I asked if my flight class had been assigned, the staff treated me poorly. The seats were small and very hard, and the temperature was extremely hot for about half of the flight. The food was good, but there wasn't enough chicken for the entire plane, so I only received pasta with no other options. The flight attendants were not friendly at all. Overall, for a group of 24 people, it was a very unpleasant experience.
TAP AIR PORTUGAL
7.1
Good
2,075 reviews
TAP AIR PORTUGAL
7.1
Good
2,075 reviews
Check prices

Comfort

7.1

Crew

7.8

Overall

7.1

Food

6.2

Entertainment

6.3

Boarding

7.0

Reviews

1 / 20
6.0
Good

Delsy,Aug 2025

LIS - MIA

Boarding was a hassle. When I asked if my flight class had been assigned, the staff treated me poorly. The seats were small and very hard, and the temperature was extremely hot for about half of the flight. The food was good, but there wasn't enough chicken for the entire plane, so I only received pasta with no other options. The flight attendants were not friendly at all. Overall, for a group of 24 people, it was a very unpleasant experience.
British Airways
6.7
Okay
7,539 reviews
TAP AIR PORTUGAL
7.1
Good
2,075 reviews
Check prices

Comfort

7.1

Crew

7.8

Overall

7.1

Food

6.2

Entertainment

6.3

Boarding

7.0

Reviews

1 / 20
6.0
Good

Delsy,Aug 2025

LIS - MIA

Boarding was a hassle. When I asked if my flight class had been assigned, the staff treated me poorly. The seats were small and very hard, and the temperature was extremely hot for about half of the flight. The food was good, but there wasn't enough chicken for the entire plane, so I only received pasta with no other options. The flight attendants were not friendly at all. Overall, for a group of 24 people, it was a very unpleasant experience.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as £125, TAP AIR PORTUGAL can have you in London Heathrow Airport from Portugal in 3h. 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 £50 and £59 on Vueling and TAP AIR PORTUGAL, 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 Cathay Pacific (71%), Finnair (69%) or LATAM Airlines (65%) 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 £220 for a flight from Portugal to London Heathrow Airport. The cheapest flight overall is £68 while the most popular route, (Lisbon Humberto Delgado - London Heathrow) is currently priced at £120.

  • 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, December is the cheapest month in which you can book a flight from Portugal to London Heathrow Airport (average of £58). Flying from Portugal to London Heathrow Airport in July is currently the most expensive (average of £114). 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?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Slough
Croydon
Hounslow
Northampton
Gatwick
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Brentford
Winchester
Swindon
Crawley
Romford
Chichester
Bedford

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Alternative routes for Portugal to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Charles de Gaulle to Gatwick flights
Charles de Gaulle to Luton flights
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Vienna to Gatwick flights
Duesseldorf Intl to Gatwick flights
Vienna to Heathrow flights
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Marseille to Heathrow flights
Duesseldorf Intl to Luton flights
Barcelona-El Prat to Gatwick flights
Duesseldorf Intl to Stansted flights
Nantes to Heathrow flights
Lyon to Stansted flights
Marseille to Gatwick flights
Marseille to London City flights
Frederic Chopin to Stansted flights
Frederic Chopin to London City flights
Vienna to London City flights
Lyon to London City flights
Nantes to Stansted flights
Nantes to London City flights
Barcelona-El Prat to Luton flights
Beauvais-Tille to Gatwick flights
Lyon to Luton flights
Madrid to London City flights
Marseille to Luton flights
Barcelona-El Prat to Heathrow flights
Nantes to Luton flights
Frankfurt to Stansted flights
Beauvais-Tille to Luton flights
Madrid to Southend flights
Amsterdam to Luton flights
Charles de Gaulle to Stansted flights

Top 2 airlines flying from Portugal to Heathrow

Discover the top 2 airlines that operate flights from Portugal to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£102Average£196FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£113Average£193FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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