Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Portugal to London Heathrow Airport from £43

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LHR
17 Jan — 24 Jan1
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
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 18 December 2025.

Thu 18/1219:50LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Tue 6/108:15LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 16/12£131
Wed 24/1218:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Sun 28/1206:00LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 16/12£135
Wed 24/1218:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Wed 31/1206:00LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 16/12£138
Thu 25/1211:15FAO - LHR
1 stop7h 40mTAP AIR PORTUGAL
Sat 3/108:15LHR - FAO
1 stop7h 30mTAP AIR PORTUGAL
Deal found 16/12£138
Mon 22/1218:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Mon 29/1206:00LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 16/12£138
Sat 20/1218:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Mon 5/108:15LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 17/12£139
Wed 24/1212:55LIS - LHR
Nonstop2h 55mBritish Airways
Thu 1/107:00LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 16/12£146
Sat 20/1218:45LIS - LHR
Nonstop2h 50mMultiple Airlines
Mon 5/109:55LHR - LIS
1 stop7h 00mMultiple Airlines
Deal found 17/12£147
Wed 24/1218:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Mon 29/1206:00LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 16/12£150
Sun 21/1219:50LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Wed 31/1208:15LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 17/12£151
Mon 22/1218:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Thu 25/1218:30LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 17/12£152
Wed 17/1211:25OPO - LHR
1 stop10h 00mAir France
Wed 31/1219:25LHR - OPO
1 stop15h 05mAir France
Deal found 16/12£152

Find flight deals from Portugal to Heathrow

Keep the following information in mind while searching for Portugal to Heathrow flight deals. Data was last updated 18 December 2025.

Round-trip from

£97

One-way from

£43

Popular in

August

Cheapest in

January

Average price

£61

Good round-trip deal

£163 or less

Good one-way deal

£80 or less
Vueling
  • Vueling
  • 24/2-28/2
  • 2 total stops
  • 30h 00m total
  • Portugal to London
Search Deals
Vueling
  • Vueling
  • 2/2
  • 1 total stop
  • 18h 40m total
  • Portugal to London
Search Deals
Highest demand for flights based on searches. 33% potential increase in price (£25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 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

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 18 December 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

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 16/1

21:55-09:10

1 stop11h 15m

London Heathrow

Tue 20/1

20:50-08:10

1 stop11h 20m

£114

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 16/1

21:55-09:10

1 stop11h 15m

London Heathrow

Thu 22/1

20:50-08:10

1 stop11h 20m

£114

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 14/1

21:55-09:10

1 stop11h 15m

London Heathrow

Mon 26/1

20:50-08:10

1 stop11h 20m

£117

FaroLondon

FAO - LHR

FAOLHR

Faro

Thu 5/2

06:05-18:55

1 stop12h 50m

London Heathrow

Wed 11/2

06:00-10:25

1 stop4h 25m

£119

FaroLondon

FAO - LHR

FAOLHR

Faro

Thu 5/2

06:05-22:40

1 stop16h 35m

London Heathrow

Sun 8/2

08:15-15:45

1 stop7h 30m

£119

FaroLondon

FAO - LHR

FAOLHR

Faro

Sat 31/1

06:05-21:35

1 stop15h 30m

London Heathrow

Sat 7/2

06:00-10:25

1 stop4h 25m

£120

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 20/3

06:05-18:55

1 stop12h 50m

London Heathrow

Sun 22/3

19:55-10:25

1 stop14h 30m

£122

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 13/3

06:05-11:25

1 stop5h 20m

London Heathrow

Sun 15/3

18:30-15:45

1 stop21h 15m

£122

FaroLondon

FAO - LHR

FAOLHR

Faro

Thu 22/1

11:15-17:30

1 stop6h 15m

London Heathrow

Mon 26/1

06:00-23:50

1 stop17h 50m

£126

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 26/2

15:55-18:40

Nonstop2h 45m

London Heathrow

Sun 1/3

15:00-17:55

Nonstop2h 55m

£126

Flights are sorted by cheapest return flights first.

Deals found on 15/12

Showing 1-10 of 60 results
1
2
3
...
6

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 £49). Flying from Portugal to London Heathrow Airport in July is currently the most expensive (average of £112). 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 18 December 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 at midday 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 18 December 2025.

The most flights from PT0 to LHR are scheduled on a Thursday (69 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (13 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 110 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 18 December 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
7.2
Good
2,091 reviews
Check prices

Comfort

7.1

Entertainment

6.3

Boarding

7.0

Crew

7.8

Overall

7.2

Food

6.2

Reviews

1 / 20
8.0
Excellent

Michael,Dec 2025

FNC - LIS

Long wait standing after checking in at the gate Limited juice selection.
TAP AIR PORTUGAL
7.2
Good
2,091 reviews
TAP AIR PORTUGAL
7.2
Good
2,091 reviews
Check prices

Comfort

7.1

Entertainment

6.3

Boarding

7.0

Crew

7.8

Overall

7.2

Food

6.2

Reviews

1 / 20
8.0
Excellent

Michael,Dec 2025

FNC - LIS

Long wait standing after checking in at the gate Limited juice selection.
British Airways
6.7
Okay
7,583 reviews
TAP AIR PORTUGAL
7.2
Good
2,091 reviews
Check prices

Comfort

7.1

Entertainment

6.3

Boarding

7.0

Crew

7.8

Overall

7.2

Food

6.2

Reviews

1 / 20
8.0
Excellent

Michael,Dec 2025

FNC - LIS

Long wait standing after checking in at the gate Limited juice selection.

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 £126, Vueling can have you in London Heathrow Airport from Portugal in 2h 45m. 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 British Airways. According to our data, you can fly for as low as £51. Users have also found prices from £62 and £88 on TAP AIR PORTUGAL 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 Finnair (70%), Cathay Pacific (68%) or LATAM 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 £199 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 £118.

  • 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 £49). Flying from Portugal to London Heathrow Airport in July is currently the most expensive (average of £112). 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
Croydon
Slough
Hounslow
Northampton
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Hayes
Watford
Crawley
Swindon
Winchester
Bedford
Romford
Chichester
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Charles de Gaulle to Heathrow flights
Amsterdam to Gatwick flights
Charles de Gaulle to London City flights
Orly to Gatwick flights
Orly to Heathrow flights
Beauvais-Tille to Stansted flights
Malpensa to Gatwick flights
Frankfurt to Gatwick flights
Beauvais-Tille to Gatwick flights
Amsterdam to Luton flights
Duesseldorf Intl to Stansted flights
Beauvais-Tille to Luton flights
Amsterdam to London City flights
Amsterdam to Stansted flights
Madrid to Gatwick flights
Frankfurt to Luton flights
Vienna to Heathrow flights
Amsterdam to Southend flights
Lyon to Gatwick flights
Vienna to Stansted flights
Duesseldorf Intl to Luton flights
Lyon to Heathrow flights
Vienna to Luton flights
Madrid to Heathrow flights
Duesseldorf Intl to Heathrow flights
Lisbon to Gatwick flights
Madrid to London City flights
Vienna to London City flights
Madrid to Stansted flights
Charles de Gaulle to Southend flights
Marseille to Stansted flights
Vienna to Gatwick flights
Lyon to Stansted flights
Lyon to London City flights
Malpensa to Luton flights
Lyon to Luton flights
Duesseldorf Intl to Gatwick flights
Nantes to Heathrow flights
Nantes to Gatwick flights
Marseille to Heathrow flights
Leonardo da Vinci/Fiumicino to Gatwick flights
Nantes to Stansted flights
Lisbon to Heathrow flights
Orly to Luton flights
Barcelona-El Prat to Luton flights
Marseille to Luton flights
Nantes to Luton flights
Madrid to Southend 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£101Average£180FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£115Average£210FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.