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Cheap flights from Portugal to London Heathrow Airport from £57

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LHR
2 Sep — 9 Sep1
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 28 August 2025.

Round-trip from

£109

One-way from

£57

Popular in

August

Cheapest in

March

Average price

£125

Good round-trip deal

£180 or less

Good one-way deal

£108 or less
British Airways
  • British Airways
  • 6/11-9/11
  • Nonstop
  • 5h 55m total
  • Portugal to London
Search Deals
Vueling
  • Vueling
  • 21/10
  • 1 total stop
  • 11h 10m total
  • Portugal to London
Search Deals
Highest demand for flights based on searches. 32% potential increase in price (£26 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 August 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

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 28 August 2025.

Thu 6/1107:00LIS - LHR
Nonstop3h 00mBritish Airways
Sun 9/1107:00LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 26/8£109
Thu 16/1022:10LIS - LHR
1 stop11h 00mVueling
Tue 21/1009:55LHR - LIS
1 stop10h 40mVueling
Deal found 26/8£110
Tue 4/1122:10LIS - LHR
1 stop11h 00mVueling
Tue 25/1109:55LHR - LIS
1 stop10h 30mVueling
Deal found 25/8£111
Tue 7/1022:05LIS - LHR
1 stop11h 05mVueling
Tue 14/1020:50LHR - LIS
1 stop11h 40mVueling
Deal found 25/8£114
Thu 2/1022:10LIS - LHR
1 stop11h 00mVueling
Wed 8/1009:55LHR - LIS
1 stop10h 40mVueling
Deal found 26/8£115
Sat 22/1121:05LIS - LHR
1 stop12h 05mVueling
Thu 27/1109:55LHR - LIS
1 stop6h 50mVueling
Deal found 27/8£116
Wed 22/1008:50LIS - LHR
1 stop5h 25mVueling
Wed 29/1009:55LHR - LIS
1 stop10h 30mVueling
Deal found 26/8£117
Thu 16/1022:10LIS - LHR
1 stop11h 00mVueling
Sun 19/1020:50LHR - LIS
1 stop11h 40mVueling
Deal found 27/8£118
Mon 20/1022:00OPO - LHR
1 stop11h 10mVueling
Wed 29/1015:30LHR - OPO
1 stop27h 50mVueling
Deal found 26/8£118
Tue 11/1109:05LIS - LHR
1 stop8h 55mVueling
Fri 14/1109:55LHR - LIS
1 stop11h 35mVueling
Deal found 26/8£119
Thu 2/1022:10LIS - LHR
1 stop11h 00mVueling
Mon 6/1020:50LHR - LIS
1 stop23h 45mVueling
Deal found 27/8£120
Thu 2/1018:10FAO - LHR
1 stop4h 45mTAP AIR PORTUGAL
Sun 5/1008:00LHR - FAO
1 stop9h 20mTAP AIR PORTUGAL
Deal found 26/8£121

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 28 August 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

Thu 16/10

20:10-22:55

Nonstop2h 45m

London Heathrow

Thu 30/10

13:40-16:25

Nonstop2h 45m

£114

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Sat 22/11

21:05-09:10

1 stop12h 05m

London Heathrow

Thu 27/11

09:55-16:45

1 stop6h 50m

£116

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 20/10

22:00-09:10

1 stop11h 10m

London Heathrow

Wed 29/10

15:30-19:20

1 stop27h 50m

£118

FaroLondon

FAO - LHR

FAOLHR

Faro

Thu 2/10

18:10-22:55

1 stop4h 45m

London Heathrow

Sun 5/10

08:00-17:20

1 stop9h 20m

£121

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 20/11

09:05-18:00

1 stop8h 55m

London Heathrow

Tue 25/11

09:55-21:30

1 stop11h 35m

£122

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 6/2

11:15-22:40

1 stop11h 25m

London Heathrow

Mon 9/2

08:15-23:50

1 stop15h 35m

£123

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Fri 21/11

15:50-18:35

Nonstop2h 45m

London Heathrow

Mon 24/11

18:55-21:45

Nonstop2h 50m

£124

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Sat 13/12

12:55-15:50

Nonstop2h 55m

London Heathrow

Tue 16/12

06:55-09:50

Nonstop2h 55m

£124

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Wed 12/11

15:55-18:40

Nonstop2h 45m

London Heathrow

Wed 19/11

09:10-12:05

Nonstop2h 55m

£124

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Sat 24/1

15:55-18:40

Nonstop2h 45m

London Heathrow

Mon 26/1

09:10-12:05

Nonstop2h 55m

£125

Flights are sorted by cheapest return flights first.

Deals found on 26/8

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 28 August 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 45% 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 24 August 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 28 August 2025.

The most flights from PT0 to LHR are scheduled on a Wednesday (65 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (30 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 28 August 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
1,963 reviews
Check prices

Overall

7.1

Boarding

7.0

Crew

7.8

Food

6.2

Entertainment

6.3

Comfort

7.1

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
1,963 reviews
TAP AIR PORTUGAL
7.1
Good
1,963 reviews
Check prices

Overall

7.1

Boarding

7.0

Crew

7.8

Food

6.2

Entertainment

6.3

Comfort

7.1

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
7,310 reviews
TAP AIR PORTUGAL
7.1
Good
1,963 reviews
Check prices

Overall

7.1

Boarding

7.0

Crew

7.8

Food

6.2

Entertainment

6.3

Comfort

7.1

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 £114, TAP AIR PORTUGAL 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 Vueling. According to our data, you can fly for as low as £57. Users have also found prices from £63 and £63 on British Airways 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 (84%), Finnair (84%) or Japan Airlines (72%) 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 £306 for a flight from Portugal to London Heathrow Airport. The cheapest flight overall is £80 while the most popular route, (Lisbon Humberto Delgado - London Heathrow) is currently priced at £113.

  • 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Ipswich
Chichester
Winchester
Eastbourne
Swindon
Dartford

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 28 August 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£93Average£199FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£111Average£161FlexibilityNo 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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