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Cheap flights from Porto to London Heathrow Airport from £56

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
7 Jul — 14 Jul1
1 adult

Cheapflights Tip: The best prices from Porto to London Heathrow are usually found in May 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 2 July 2025.

Round-trip from

£150

One-way from

£56

Popular in

July

Cheapest in

May

Average price

£263
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 6/11-10/11
  • 2 total stops
  • 12h 40m total
  • Porto to London
11/9
  • 11/9
  • 1 total stop
  • 17h 50m total
  • Porto to London
Highest demand for flights based on searches. 22% potential increase in price (£36 potential increase over avg. return price).
Cheapest flight prices on average. 5% potential price decrease (£7 potential savings vs. average return price).
Average for round-trip flights in July 2025

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 2 July 2025.

Thu 6/1107:00OPO - LHR
1 stop5h 40mTAP AIR PORTUGAL
Mon 10/1106:00LHR - OPO
1 stop7h 00mTAP AIR PORTUGAL
Deal found 30/6£150
Thu 11/922:00OPO - LHR
1 stop11h 10mMultiple Airlines
Tue 16/920:50LHR - OPO
1 stop9h 55mMultiple Airlines
Deal found 30/6£159
Tue 11/1112:25OPO - LHR
1 stop4h 50mIberia
Sat 15/1106:10LHR - OPO
1 stop5h 35mIberia
Deal found 1/7£167
Thu 11/906:30OPO - LHR
1 stop7h 20mKLM
Wed 17/917:10LHR - OPO
1 stop5h 05mKLM
Deal found 30/6£188
Thu 6/1109:10OPO - LHR
2 stops8h 40mSWISS
Mon 10/1106:00LHR - OPO
1 stop5h 10mSWISS
Deal found 30/6£201
Sat 23/810:10OPO - LHR
1 stop11h 25mBrussels Airlines
Sun 21/911:05LHR - OPO
1 stop4h 55mBrussels Airlines
Deal found 30/6£205

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 2 July 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

Thu 6/11

07:00-12:40

1 stop5h 40m

London Heathrow

Mon 10/11

06:00-13:00

1 stop7h 00m

£150

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 11/9

22:00-09:10

1 stop11h 10m

London Heathrow

Tue 16/9

20:50-06:45

1 stop9h 55m

£159

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 11/11

12:25-17:15

1 stop4h 50m

London Heathrow

Sat 15/11

06:10-11:45

1 stop5h 35m

£167

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 11/9

06:30-13:50

1 stop7h 20m

London Heathrow

Wed 17/9

17:10-22:15

1 stop5h 05m

£188

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 6/11

09:10-17:50

2 stops8h 40m

London Heathrow

Mon 10/11

06:00-11:10

1 stop5h 10m

£201

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 23/8

10:10-21:35

1 stop11h 25m

London Heathrow

Sun 21/9

11:05-16:00

1 stop4h 55m

£205

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 11/9

20:55-14:45

1 stop17h 50m

£56

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 28/10

20:40-09:15

1 stop12h 35m

£63

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 15/7

20:15-14:45

1 stop18h 30m

£66

PortoLondon

OPO - LHR

OPOLHR

Porto

Sun 7/9

17:35-12:30

1 stop18h 55m

£71

Flights are sorted by cheapest return flights first.

Deals found on 30/6

Showing 1-10 of 13 results
1
2

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 27 June 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 2 July 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.

How much does it cost for a return flight from Porto to London Heathrow Airport?

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 2 July 2025.
Read reviews from past customers who have flown with KLM, SWISS, andBrussels Airlines from Porto to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.4

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

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.

Crew

8.4

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

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.

Crew

8.4

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

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.

Crew

8.4

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

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.

Crew

8.4

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

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.

Crew

8.4

Boarding

7.8

Food

7.2

Overall

7.8

Entertainment

7.1

Comfort

7.7

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 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?

    TAP AIR PORTUGAL, at £150, was found to be the cheapest airline from Porto to London Heathrow Airport.Alternate airlines flying return to your destination include Iberia and KLM. TAP AIR PORTUGAL is priced at 13% 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 £63 on Iberia. Other airlines that offer cheap prices include Vueling from £66 and Air Serbia from £71 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
Croydon
Milton Keynes
Deal
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Hayes
Folkestone
Southend-on-Sea
Watford
Ipswich
Winchester
Swindon
Maidstone

Browse thousands of different options on Cheapflights for your next trip

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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 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£113Average£174FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

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How does Cheapflights help users find flights from Porto to Heathrow?

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Can Cheapflights find flights from Porto to Heathrow with no change fees?

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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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