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Cheap flights from Portugal to London Heathrow Airport from £41

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LHR
18 Jun — 25 Jun1
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 13 June 2025.

Round-trip from

£102

One-way from

£41

Popular in

August

Cheapest in

March

Average price

£99

Good round-trip deal

£150 or less

Good one-way deal

£92 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 6/11-11/11
  • Nonstop
  • 5h 35m total
  • Portugal to London
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Vueling
  • Vueling
  • 18/11
  • 1 total stop
  • 18h 40m total
  • Portugal to London
Search Deals
Highest demand for flights based on searches. 29% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
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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 13 June 2025.

Thu 6/1119:50LIS - LHR
Nonstop2h 50mTAP AIR PORTUGAL
Tue 11/1106:00LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 12/6£102
Tue 25/1110:40LIS - LHR
Nonstop2h 55mBritish Airways
Mon 1/1206:55LHR - LIS
Nonstop2h 55mBritish Airways
Deal found 10/6£109
Thu 25/906:05FAO - LHR
1 stop16h 50mTAP AIR PORTUGAL
Sun 28/906:00LHR - FAO
1 stop11h 20mTAP AIR PORTUGAL
Deal found 13/6£116
Fri 7/1113:40LIS - LHR
1 stop25h 05mVueling
Tue 11/1118:50LHR - LIS
1 stop13h 40mVueling
Deal found 12/6£132
Tue 11/1111:45LIS - LHR
1 stop6h 30mMultiple Airlines
Sat 15/1119:40LHR - LIS
Nonstop2h 45mMultiple Airlines
Deal found 11/6£134
Wed 22/1006:10OPO - LHR
1 stop6h 10mMultiple Airlines
Thu 30/1015:30LHR - OPO
1 stop4h 50mMultiple Airlines
Deal found 12/6£135
Sat 6/1220:05OPO - LHR
1 stop18h 40mVueling
Sat 13/1220:50LHR - OPO
1 stop11h 20mVueling
Deal found 12/6£141
Sat 5/720:00FAO - LHR
Nonstop2h 45mBritish Airways
Sun 6/707:15LHR - FAO
Nonstop2h 55mBritish Airways
Deal found 11/6£144
Sat 25/1020:35OPO - LHR
1 stop13h 40mIberia
Sat 1/1119:40LHR - OPO
1 stop12h 00mIberia
Deal found 12/6£149
Fri 28/1114:00LIS - LHR
1 stop6h 35mIberia
Tue 2/1213:25LHR - LIS
1 stop10h 00mIberia
Deal found 12/6£150
Fri 3/1009:00OPO - LHR
1 stop13h 55mTAP AIR PORTUGAL
Sun 5/1006:00LHR - OPO
1 stop11h 00mTAP AIR PORTUGAL
Deal found 11/6£157
Thu 18/908:30FAO - LHR
1 stop12h 25mKLM
Thu 2/1020:55LHR - FAO
1 stop11h 05mKLM
Deal found 12/6£157

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 13 June 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 6/11

19:50-22:40

Nonstop2h 50m

London Heathrow

Tue 11/11

06:00-08:45

Nonstop2h 45m

£102

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Tue 25/11

10:40-13:35

Nonstop2h 55m

London Heathrow

Mon 1/12

06:55-09:50

Nonstop2h 55m

£109

FaroLondon

FAO - LHR

FAOLHR

Faro

Thu 25/9

06:05-22:55

1 stop16h 50m

London Heathrow

Sun 28/9

06:00-17:20

1 stop11h 20m

£116

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Fri 7/11

13:40-14:45

1 stop25h 05m

London Heathrow

Tue 11/11

18:50-08:30

1 stop13h 40m

£132

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Tue 11/11

11:45-18:15

1 stop6h 30m

London Heathrow

Sat 15/11

19:40-22:25

Nonstop2h 45m

£134

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 22/10

06:10-12:20

1 stop6h 10m

London Heathrow

Thu 30/10

15:30-20:20

1 stop4h 50m

£135

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 6/12

20:05-14:45

1 stop18h 40m

London Heathrow

Sat 13/12

20:50-08:10

1 stop11h 20m

£141

FaroLondon

FAO - LHR

FAOLHR

Faro

Sat 5/7

20:00-22:45

Nonstop2h 45m

London Heathrow

Sun 6/7

07:15-10:10

Nonstop2h 55m

£144

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 25/10

20:35-10:15

1 stop13h 40m

London Heathrow

Sat 1/11

19:40-07:40

1 stop12h 00m

£149

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Fri 28/11

14:00-20:35

1 stop6h 35m

London Heathrow

Tue 2/12

13:25-23:25

1 stop10h 00m

£150

Flights are sorted by cheapest return flights first.

Deals found on 10/6

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 13 June 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 46% 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 8 June 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 13 June 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 (17 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 13 June 2025.
To help decide which airline to fly from Portugal to London, see what other customers have to say about Aegean Airlines, KLM and Azores Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.2
Very Good
759 reviews
Check prices

Boarding

7.8

Comfort

7.9

Food

7.4

Overall

8.2

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Aegean Airlines
8.2
Very Good
759 reviews
Aegean Airlines
8.2
Very Good
759 reviews
Check prices

Boarding

7.8

Comfort

7.9

Food

7.4

Overall

8.2

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
KLM
7.8
Good
1,358 reviews
Aegean Airlines
8.2
Very Good
759 reviews
Check prices

Boarding

7.8

Comfort

7.9

Food

7.4

Overall

8.2

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Azores Airlines
7.6
Good
66 reviews
Aegean Airlines
8.2
Very Good
759 reviews
Check prices

Boarding

7.8

Comfort

7.9

Food

7.4

Overall

8.2

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Austrian Airlines
7.6
Good
802 reviews
Aegean Airlines
8.2
Very Good
759 reviews
Check prices

Boarding

7.8

Comfort

7.9

Food

7.4

Overall

8.2

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Air France
7.5
Good
1,463 reviews
Aegean Airlines
8.2
Very Good
759 reviews
Check prices

Boarding

7.8

Comfort

7.9

Food

7.4

Overall

8.2

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

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 £41. Users have also found prices from £50 and £61 on British Airways and Iberia, 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 (80%), Finnair (80%) or American Airlines (70%) 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 £662 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 £103.

  • 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
Deal
Hounslow
Croydon
Milton Keynes
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Southend-on-Sea
Watford
Hayes
Ipswich
Winchester
Folkestone
Maidstone
Swindon

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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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£94Average£186FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£110Average£201FlexibilityNo 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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