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Cheap flights from Portugal to London Heathrow Airport from £40

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LHR
9 Feb — 16 Feb1
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 10 January 2026.

Round-trip from

£98

One-way from

£40

Popular in

August

Cheapest in

March

Average price

£41

Good round-trip deal

£185 or less

Good one-way deal

£61 or less
Vueling
  • Vueling
  • 5/3-9/3
  • 2 total stops
  • 45h 50m total
  • Portugal to London
Search Deals
Vueling
  • Vueling
  • 10/3
  • 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 January 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.
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 10 January 2026.

Tue 24/217:40LIS - LHR
1 stop15h 30mVueling
Tue 3/320:50LHR - LIS
1 stop11h 40mVueling
Deal found 10/1£103
Sun 11/118:40LIS - LHR
Nonstop2h 45mBritish Airways
Tue 20/106:55LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 9/1£104
Thu 5/320:05OPO - LHR
1 stop18h 40mVueling
Mon 9/320:50LHR - OPO
1 stop11h 20mVueling
Deal found 10/1£104
Fri 16/118:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Sun 18/108:15LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 10/1£105
Mon 19/116:35FAO - LHR
1 stop6h 05mTAP AIR PORTUGAL
Thu 5/218:30LHR - FAO
1 stop5h 20mTAP AIR PORTUGAL
Deal found 9/1£107
Tue 24/219:50LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Tue 3/318:30LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 9/1£107
Thu 29/116:35FAO - LHR
1 stop6h 05mTAP AIR PORTUGAL
Sun 1/208:15LHR - FAO
1 stop15h 35mTAP AIR PORTUGAL
Deal found 9/1£107
Mon 23/218:45LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Mon 2/306:00LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 9/1£107
Sat 7/208:20OPO - LHR
1 stop9h 55mMultiple Airlines
Mon 9/220:50LHR - OPO
1 stop11h 20mMultiple Airlines
Deal found 9/1£107
Thu 15/106:05FAO - LHR
1 stop9h 25mTAP AIR PORTUGAL
Sun 18/108:15LHR - FAO
1 stop7h 30mTAP AIR PORTUGAL
Deal found 8/1£108
Thu 15/116:35FAO - LHR
1 stop6h 05mTAP AIR PORTUGAL
Thu 22/112:25LHR - FAO
1 stop11h 25mTAP AIR PORTUGAL
Deal found 10/1£110
Sun 18/106:05FAO - LHR
1 stop5h 20mTAP AIR PORTUGAL
Wed 21/118:30LHR - FAO
1 stop5h 20mTAP AIR PORTUGAL
Deal found 8/1£110

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 10 January 2026.
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

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Tue 24/2

17:40-09:10

1 stop15h 30m

London Heathrow

Tue 3/3

20:50-08:30

1 stop11h 40m

£103

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 5/3

20:05-14:45

1 stop18h 40m

London Heathrow

Sat 14/3

20:50-08:10

1 stop11h 20m

£107

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 13/3

16:35-22:40

1 stop6h 05m

London Heathrow

Tue 17/3

08:15-15:45

1 stop7h 30m

£111

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 26/2

20:05-14:45

1 stop18h 40m

London Heathrow

Thu 5/3

20:50-08:10

1 stop11h 20m

£113

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 24/2

21:55-09:10

1 stop11h 15m

London Heathrow

Tue 3/3

20:50-08:10

1 stop11h 20m

£116

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Fri 16/1

18:45-21:35

Nonstop2h 50m

London Heathrow

Sun 18/1

13:40-16:25

Nonstop2h 45m

£120

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 5/3

14:40-17:30

Nonstop2h 50m

London Heathrow

Mon 9/3

18:30-21:15

Nonstop2h 45m

£121

FaroLondon

FAO - LHR

FAOLHR

Faro

Thu 29/1

16:35-22:40

1 stop6h 05m

London Heathrow

Sun 1/2

06:00-10:25

1 stop4h 25m

£124

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 30/1

16:35-21:35

1 stop5h 00m

London Heathrow

Tue 3/2

08:15-15:45

1 stop7h 30m

£124

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 27/1

16:00-22:40

1 stop6h 40m

London Heathrow

Sun 1/2

12:25-18:05

1 stop5h 40m

£127

Flights are sorted by cheapest return flights first.

Deals found on 9/1

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 £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 10 January 2026.

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 afternoon.

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. Wednesday afternoons 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 10 January 2026.

The most flights from PT0 to LHR are scheduled on a Saturday (60 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (24 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 10 January 2026.
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
2,114 reviews
Check prices

Crew

7.8

Overall

7.1

Food

6.2

Boarding

7.0

Entertainment

6.3

Comfort

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LIS - EWR

Both flights returning to newirk airport was delayed by over a hour with minimum early notification
TAP AIR PORTUGAL
7.1
Good
2,114 reviews
TAP AIR PORTUGAL
7.1
Good
2,114 reviews
Check prices

Crew

7.8

Overall

7.1

Food

6.2

Boarding

7.0

Entertainment

6.3

Comfort

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LIS - EWR

Both flights returning to newirk airport was delayed by over a hour with minimum early notification
British Airways
6.7
Okay
7,667 reviews
TAP AIR PORTUGAL
7.1
Good
2,114 reviews
Check prices

Crew

7.8

Overall

7.1

Food

6.2

Boarding

7.0

Entertainment

6.3

Comfort

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LIS - EWR

Both flights returning to newirk airport was delayed by over a hour with minimum early notification

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 £120, Vueling can have you in London Heathrow Airport from Portugal in 2h 50m. 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 £50. Users have also found prices from £63 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 American Airlines (83%), Qatar Airways (68%) or British Airways (68%) 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 £173 for a flight from Portugal to London Heathrow Airport. The cheapest flight overall is £62 while the most popular route, (Lisbon Humberto Delgado - London Heathrow) is currently priced at £109.

  • 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
Luton
Croydon
Northampton
Slough
Hounslow
Gatwick
Ilford
Wembley
Brentford
Hayes
Colchester
Watford
Crawley
Swindon
Kingston upon Thames
Bedford
Chelmsford
Eastbourne
Romford

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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.
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Charles de Gaulle to Luton flights
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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 10 January 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£99Average£182FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£115Average£208FlexibilityNo 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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