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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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — LHR
30 Mar — 6 Apr1
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 25 March 2025.

Round-trip from

£79

One-way from

£41

Popular in

August

Cheapest in

March

Average price

£39

Good round-trip deal

£113 or less

Good one-way deal

£76 or less
Vueling
  • Vueling
  • 6/5-13/5
  • 2 total stops
  • 47h 05m total
  • Portugal to London
Search Deals
Vueling
  • Vueling
  • 7/5
  • 1 total stop
  • 11h 55m total
  • Portugal to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£22 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 25 March 2025.

Tue 6/516:20LIS - LHR
1 stop22h 25mVueling
Tue 13/520:50LHR - LIS
1 stop24h 40mVueling
Deal found 25/3£79
Thu 22/520:10LIS - LHR
Nonstop2h 45mTAP AIR PORTUGAL
Sat 31/518:45LHR - LIS
Nonstop2h 45mTAP AIR PORTUGAL
Deal found 24/3£107
Thu 6/1118:35LIS - LHR
Nonstop2h 45mBritish Airways
Sun 9/1119:40LHR - LIS
Nonstop2h 45mBritish Airways
Deal found 24/3£112
Fri 2/506:05FAO - LHR
1 stop16h 50mTAP AIR PORTUGAL
Wed 14/519:50LHR - FAO
1 stop14h 35mTAP AIR PORTUGAL
Deal found 24/3£113
Fri 2/522:00OPO - LHR
1 stop11h 10mMultiple Airlines
Sat 10/520:50LHR - OPO
1 stop12h 00mMultiple Airlines
Deal found 25/3£118
Fri 2/519:50FAO - LHR
Nonstop2h 45mBritish Airways
Mon 5/507:25LHR - FAO
Nonstop2h 55mBritish Airways
Deal found 24/3£125
Fri 9/522:00OPO - LHR
1 stop22h 05mVueling
Mon 12/515:30LHR - OPO
1 stop28h 05mVueling
Deal found 25/3£128
Thu 8/522:10LIS - LHR
1 stop11h 00mMultiple Airlines
Wed 14/515:05LHR - LIS
1 stop7h 25mMultiple Airlines
Deal found 25/3£135
Thu 1/518:10FAO - LHR
1 stop4h 45mMultiple Airlines
Mon 5/507:25LHR - FAO
Nonstop2h 55mMultiple Airlines
Deal found 24/3£152
Fri 26/916:00OPO - LHR
1 stop6h 55mTAP AIR PORTUGAL
Sat 27/918:45LHR - OPO
1 stop5h 55mTAP AIR PORTUGAL
Deal found 24/3£152
Thu 8/515:35LIS - LHR
1 stop6h 10mSWISS
Mon 12/506:00LHR - LIS
1 stop17h 20mSWISS
Deal found 25/3£156
Thu 8/516:50FAO - LHR
1 stop26h 30mSWISS
Thu 15/518:40LHR - FAO
1 stop22h 55mSWISS
Deal found 24/3£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 25 March 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

Tue 6/5

16:20-14:45

1 stop22h 25m

London Heathrow

Tue 13/5

20:50-21:30

1 stop24h 40m

£79

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 22/5

20:10-22:55

Nonstop2h 45m

London Heathrow

Sat 31/5

18:45-21:30

Nonstop2h 45m

£107

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 2/5

06:05-22:55

1 stop16h 50m

London Heathrow

Wed 14/5

19:50-10:25

1 stop14h 35m

£113

FaroLondon

FAO - LHR

FAOLHR

Faro

Fri 2/5

19:50-22:35

Nonstop2h 45m

London Heathrow

Mon 5/5

07:25-10:20

Nonstop2h 55m

£125

PortoLondon

OPO - LHR

OPOLHR

Porto

Fri 9/5

22:00-20:05

1 stop22h 05m

London Heathrow

Mon 12/5

15:30-19:35

1 stop28h 05m

£128

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 1/5

10:00-22:55

1 stop12h 55m

London Heathrow

Tue 6/5

20:50-08:00

1 stop11h 10m

£131

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 8/5

22:10-09:10

1 stop11h 00m

London Heathrow

Wed 14/5

15:05-22:30

1 stop7h 25m

£135

FaroLondon

FAO - LHR

FAOLHR

Faro

Thu 1/5

18:10-22:55

1 stop4h 45m

London Heathrow

Mon 5/5

07:25-10:20

Nonstop2h 55m

£152

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 18/9

16:00-22:00

1 stop6h 00m

London Heathrow

Mon 22/9

06:00-15:20

1 stop9h 20m

£153

LisbonLondon

LIS - LHR

LISLHR

Lisbon Humberto Delgado

Thu 8/5

15:35-21:45

1 stop6h 10m

London Heathrow

Mon 12/5

06:00-23:20

1 stop17h 20m

£156

Flights are sorted by cheapest return flights first.

Deals found on 24/3

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 25 March 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 52% 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 23 March 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 mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 25 March 2025.
To help decide which airline to fly from Portugal to London, see what other customers have to say about Aegean Airlines, Emirates and KLM. 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
8.1
Very Good
729 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Crew

8.6

Entertainment

6.9

Overall

8.1

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
8.1
Very Good
729 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Crew

8.6

Entertainment

6.9

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Emirates
8.0
Very Good
3,190 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Crew

8.6

Entertainment

6.9

Overall

8.1

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
1,318 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Crew

8.6

Entertainment

6.9

Overall

8.1

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
63 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Crew

8.6

Entertainment

6.9

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
LOT
7.6
Good
1,061 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Crew

8.6

Entertainment

6.9

Overall

8.1

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 £46 and £62 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 (78%), JetBlue (77%) or Japan Airlines (74%) 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 £520 for a flight from Portugal to London Heathrow Airport. The cheapest flight overall is £65 while the most popular route, (Lisbon Humberto Delgado - London Heathrow) is currently priced at £102.

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

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 3 airlines flying from Portugal to Heathrow

Discover the top 3 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£51Average£175FlexibilityNo cancel feeOn-time86%
Search easyJet flights
TAP AIR PORTUGALCheapest£91Average£197FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
British AirwaysCheapest£115Average£254FlexibilityNo 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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