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Cheap flights from Porto to London Heathrow Airport from £54

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Porto to London Heathrow are usually found in November or February, booked 4 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap flight deals from Porto to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 March 2025.

Round-trip from

£128

One-way from

£54

Popular in

August

Cheapest in

November

Average price

£159
Vueling
  • Vueling
  • 9/5-12/5
  • 2 total stops
  • 50h 10m total
  • Porto to London
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Vueling
  • Vueling
  • 6/5
  • 1 total stop
  • 18h 30m total
  • Porto to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£24 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
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Find flight deals from Porto to Heathrow

Cheapest flights from Porto to Heathrow
Explore the most affordable flight options available from Porto to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2025.

Thu 1/510:00OPO - LHR
1 stop12h 55mMultiple Airlines
Tue 6/520:50LHR - OPO
1 stop11h 10mMultiple Airlines
Deal found 23/3£131
Fri 2/522:00OPO - LHR
1 stop11h 10mVueling
Tue 6/520:50LHR - OPO
1 stop11h 10mVueling
Deal found 24/3£137
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 8/520:20OPO - LHR
1 stop11h 20mKLM
Mon 12/508:40LHR - OPO
1 stop8h 05mKLM
Deal found 24/3£162
Thu 8/508:40OPO - LHR
1 stop7h 45mSWISS
Sat 10/520:05LHR - OPO
1 stop11h 50mSWISS
Deal found 24/3£165
Tue 29/406:00OPO - LHR
1 stop11h 40mLufthansa
Tue 6/516:25LHR - OPO
1 stop6h 55mLufthansa
Deal found 24/3£180
Sat 5/416:50OPO - LHR
1 stop4h 45mBrussels Airlines
Wed 9/411:05LHR - OPO
1 stop5h 20mBrussels Airlines
Deal found 24/3£219
Wed 3/916:55OPO - LHR
1 stop5h 35mIberia
Thu 4/909:55LHR - OPO
1 stop6h 20mIberia
Deal found 24/3£226
Thu 8/508:45OPO - LHR
1 stop9h 20mEurowings
Mon 12/514:45LHR - OPO
1 stop5h 55mEurowings
Deal found 24/3£247

Cheapflights Fare Finder

Customise your flight search to find flights from Porto 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 Porto to London Heathrow Airport that are best for you.

Fly from

Porto

Fly to

Heathrow

Route

Depart

Return

Price

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

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

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 8/5

20:20-07:40

1 stop11h 20m

London Heathrow

Mon 12/5

08:40-16:45

1 stop8h 05m

£162

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 8/5

08:40-16:25

1 stop7h 45m

London Heathrow

Sat 10/5

20:05-07:55

1 stop11h 50m

£165

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 29/4

06:00-17:40

1 stop11h 40m

London Heathrow

Tue 6/5

16:25-23:20

1 stop6h 55m

£180

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 5/4

16:50-21:35

1 stop4h 45m

London Heathrow

Wed 9/4

11:05-16:25

1 stop5h 20m

£219

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 8/5

08:35-16:25

1 stop7h 50m

London Heathrow

Mon 12/5

09:55-16:15

1 stop6h 20m

£226

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 8/5

08:45-18:05

1 stop9h 20m

London Heathrow

Mon 12/5

14:45-20:40

1 stop5h 55m

£247

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 1/9

10:25-08:20

1 stop21h 55m

London Heathrow

Sun 7/9

09:05-09:35

1 stop24h 30m

£316

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 23 results
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Best time to book a flight from Porto to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Porto 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 Porto to London Heathrow Airport

How far ahead should I book a flight from Porto to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from Porto to Heathrow. Price data was last updated on 21 March 2025.

Booking 4 days in advance of your planned departure date is, on average, the best time to get cheap flights from Porto to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Porto to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of £112). Flying from Porto 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 OPO to LHR?

Find hourly flight availability from Porto 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.

One of the essential ways to save on airfare from Porto to London Heathrow Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 38% on airfare.

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.
Peruse reviews from past customers who have flown with Aegean Airlines, KLM and LOT from Porto to London to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.8

Boarding

7.8

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

Entertainment

6.9

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.8

Boarding

7.8

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

Entertainment

6.9

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.8

Boarding

7.8

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

Entertainment

6.9

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.8

Boarding

7.8

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
7.5
Good
769 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.8

Boarding

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
SWISS
7.5
Good
1,569 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Food

7.3

Crew

8.6

Overall

8.1

Comfort

7.8

Boarding

7.8

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 Porto to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Porto to London Heathrow?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to London Heathrow. 1 airline have flights from Porto to London Heathrow on a regular basis. Booking flights from Porto to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • What are the cheapest airlines flying from Porto to London Heathrow Airport round-trip?

    Vueling, at £128, was found to be the cheapest airline from Porto to London Heathrow Airport.Alternate airlines flying return to your destination include TAP AIR PORTUGAL and KLM. Vueling is priced at 29% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as £54 on Vueling. Other airlines that offer cheap prices include SWISS from £67 and Iberia from £69 one-way.

  • Can I find deals for flights from Porto to Heathrow that include hotel bookings?

    Yes. In addition to deals on Porto to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Porto to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Heathrow.

  • Can I find deals for business class flights from Porto to Heathrow?

    Yes. Cheapflights offers flight deals from Porto 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 Porto to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of £112). Flying from Porto 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 Porto?

Book flights to Porto if you plan to visit one of these locations
Hounslow
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Top airline flying from Porto to Heathrow

Discover the top airline that operate flights from Porto 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
TAP AIR PORTUGALCheapest£120Average£198FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

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Not ready to book yet? You can track prices for flights from Porto to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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