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Cheap flights from Portugal to London Heathrow Airport from £47

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LHR
16 lug — 23 lug1
1 adult

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 11 luglio 2025.

Round-trip from

£110

One-way from

£47

Popular in

August

Cheapest in

March

Average price

£111

Good round-trip deal

£84 or less

Good one-way deal

£88 or less
British Airways
  • British Airways
  • 5/12-9/12
  • Nonstop
  • 5h 50m total
  • Portugal to London
Search Deals
Vueling
  • Vueling
  • 2/10
  • 1 total stop
  • 18h 05m total
  • Portugal to London
Search Deals
Highest demand for flights based on searches. 29% potential increase in price (£23 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 July 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.
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Find flight deals from Portugal to Heathrow

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 11 luglio 2025.

ven 5/1212:55LIS - LHR
Nonstop2h 55mBritish Airways
mar 9/1206:55LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 9/7£110
gio 18/918:10FAO - LHR
1 stop4h 45mTAP AIR PORTUGAL
dom 5/1006:00LHR - FAO
1 stop11h 20mTAP AIR PORTUGAL
Deal found 11/7£113
lun 22/1220:05LIS - LHR
1 stop18h 40mVueling
mer 31/1209:55LHR - LIS
1 stop11h 35mVueling
Deal found 9/7£114
gio 25/920:10LIS - LHR
Nonstop2h 45mTAP AIR PORTUGAL
mar 30/918:45LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 9/7£118
mar 30/922:00OPO - LHR
1 stop11h 10mVueling
mar 7/1020:50LHR - OPO
1 stop11h 10mVueling
Deal found 9/7£127
mar 25/1107:05LIS - LHR
Nonstop3h 00mMultiple Airlines
mar 25/1118:50LHR - LIS
1 stop13h 40mMultiple Airlines
Deal found 9/7£136
mar 7/1008:10OPO - LHR
1 stop6h 05mMultiple Airlines
mar 14/1020:50LHR - OPO
1 stop11h 10mMultiple Airlines
Deal found 10/7£136
mar 21/1011:30FAO - LHR
Nonstop2h 50mBritish Airways
lun 10/1114:20LHR - FAO
Nonstop3h 00mBritish Airways
Deal found 9/7£141
ven 5/922:35OPO - LHR
1 stop14h 10mTAP AIR PORTUGAL
dom 14/906:00LHR - OPO
1 stop9h 00mTAP AIR PORTUGAL
Deal found 9/7£158
mar 2/920:35FAO - LHR
1 stop11h 05mKLM
gio 18/919:15LHR - FAO
1 stop12h 45mKLM
Deal found 10/7£161
ven 17/1020:45OPO - LHR
1 stop10h 55mKLM
lun 20/1020:55LHR - OPO
1 stop13h 45mKLM
Deal found 10/7£168
gio 18/906:05FAO - LHR
1 stop15h 55mMultiple Airlines
dom 5/1009:50LHR - FAO
Nonstop2h 55mMultiple Airlines
Deal found 11/7£171

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 11 luglio 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

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

ven 5/12

12:55-15:50

Nonstop2h 55m

London Heathrow

mar 9/12

06:55-09:50

Nonstop2h 55m

£110

FaroLondon

FAO - LHR

FAOLHR

Faro

gio 18/9

18:10-22:55

1 stop4h 45m

London Heathrow

dom 5/10

06:00-17:20

1 stop11h 20m

£113

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

gio 6/11

09:50-12:40

Nonstop2h 50m

London Heathrow

sab 8/11

18:30-21:15

Nonstop2h 45m

£114

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

lun 24/11

20:05-14:45

1 stop18h 40m

London Heathrow

lun 1/12

18:50-13:20

1 stop18h 30m

£121

PortoLondon

OPO - LHR

OPOLHR

Porto

mar 30/9

22:00-09:10

1 stop11h 10m

London Heathrow

mar 7/10

20:50-08:00

1 stop11h 10m

£127

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

mar 25/11

07:05-10:05

Nonstop3h 00m

London Heathrow

mar 25/11

18:50-08:30

1 stop13h 40m

£136

PortoLondon

OPO - LHR

OPOLHR

Porto

mar 7/10

08:10-14:15

1 stop6h 05m

London Heathrow

mar 14/10

20:50-08:00

1 stop11h 10m

£136

FaroLondon

FAO - LHR

FAOLHR

Faro

mar 21/10

11:30-14:20

Nonstop2h 50m

London Heathrow

lun 10/11

14:20-17:20

Nonstop3h 00m

£141

PortoLondon

OPO - LHR

OPOLHR

Porto

ven 5/9

22:35-12:45

1 stop14h 10m

London Heathrow

dom 14/9

06:00-15:00

1 stop9h 00m

£158

FaroLondon

FAO - LHR

FAOLHR

Faro

mar 2/9

20:35-07:40

1 stop11h 05m

London Heathrow

gio 18/9

19:15-08:00

1 stop12h 45m

£161

Flights are sorted by cheapest return flights first.

Deals found on 9/7

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, January is the cheapest month in which you can book a flight from Portugal to London Heathrow Airport (average of £112). Flying from Portugal to London Heathrow Airport in August is currently the most expensive (average of £164). 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 11 luglio 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 47% 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 6 July 2025.

Travellers seeking maximum savings on their Portugal to London Heathrow Airport flight should consider departing on Friday at midday when fares are most often at their lowest. Monday 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 11 luglio 2025.

The most flights from PT0 to LHR are scheduled on a Thursday (73 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (20 on average).

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 11 luglio 2025.
Get a feel of what it's like to fly with KLM, LOT, andAzores Airlines 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.
KLM
7.8
Good
1,372 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,372 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
LOT
7.6
Good
1,096 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Azores Airlines
7.5
Good
67 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Air France
7.5
Good
1,467 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
SWISS
7.5
Good
1,655 reviews
KLM
7.8
Good
1,372 reviews
Check prices

Overall

7.8

Boarding

7.8

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

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

    For one-way options, check prices for Vueling. According to our data, you can fly for as low as £47. Users have also found prices from £58 and £68 on British Airways and Air Serbia, 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 (87%), Finnair (87%) or Japan Airlines (78%) 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 £883 for a flight from Portugal to London Heathrow Airport. The cheapest flight overall is £77 while the most popular route, (Lisbon Humberto Delgado - London Heathrow) is currently priced at £94.

  • 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 £112). Flying from Portugal to London Heathrow Airport in August is currently the most expensive (average of £164). 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 Portugal?

Book flights to Portugal if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Northampton
Gatwick
Slough
Luton
Wembley
Crawley
Eastbourne
Ilford
Hayes
Ipswich
Folkestone
Southend-on-Sea
Watford
Winchester
Swindon
Maidstone

Browse thousands of different options on Cheapflights for your next trip

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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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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 11 luglio 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£93Average£196FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£110Average£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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