Question 1

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

Accepted Answer

Vueling, at £142, 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 24% lower than the current average price of a flight leaving 3 months from now.

Question 2

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

Accepted Answer

One-way options have recently been found by users for as low as £49 on Vueling. Other airlines that offer cheap prices include Air Serbia from £72 and Iberia from £75 one-way.

Question 3

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

Accepted Answer

Booking 42 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.

Question 4

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

Accepted Answer

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.

Question 5

What is the cheapest day to fly from Porto to London Heathrow Airport?

Accepted Answer

Travellers seeking maximum savings on their Porto to London Heathrow Airport flight should consider departing on Thursday mornings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

E

Accepted Answer

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.

Question 7

E

Accepted Answer

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).

Question 8

What is the cheapest day to fly round-trip from Porto to London Heathrow Airport?

Accepted Answer

Sunday flights are found to be more expensive to fly from Porto to London Heathrow Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London Heathrow Airport.

Question 9

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

Accepted Answer

Travelers have found it’s best to book a flight 30 days in advance to save up to 52% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 30 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Porto to London Heathrow Airport 1-2 weeks in advance for as low as £100, or £100 for flights within the next 24 hours.

Question 10

What is the cheapest month to fly from Porto to London Heathrow Airport?

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, February can be a great choice for travel to London Heathrow Airport. Flights to London Heathrow Airport from Porto in February are about £104 on average during February, but can be found for as low as £26.

Question 11

What is the cheapest time of day to fly from OPO to LHR?

Accepted Answer

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 39% on airfare.

Question 12

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

Accepted Answer

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.

Question 13

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

Accepted Answer

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

Question 14

How can I find direct flights from Porto to Heathrow?

Accepted Answer

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

Question 15

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

Accepted Answer

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.

Question 16

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

Accepted Answer

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Porto today with Cheapflights!

Question 17

Why should you use Cheapflights to find cheap flight tickets from Porto to Heathrow?

Accepted Answer

Cheapflights helps you find that perfect flight to Heathrow from Porto by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 18

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

Accepted Answer

Yes! Cheapflights helps users easily find flights from Porto to Heathrow with no change fees.

Question 19

Can Cheapflights notify me if prices for flights from Porto to Heathrow become cheaper?

Accepted Answer

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.

Round-trip from	£142
One-way from	£45
Popular in	July
Cheapest in	May
Average price	£342

Cheap flights from Porto to London Heathrow Airport from £45

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Porto to London Heathrow are usually found in May or February, booked 42 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

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Cheapest flights from Porto to HeathrowExplore 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 16 July 2025.

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 16 July 2025.

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Use the filters below to find and compare flights from Porto to London Heathrow Airport that are best for you.

Best time to book a flight from Porto to Heathrow

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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 11 July 2025.

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

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 16 July 2025.

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

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown with KLM, SWISS, andVueling 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.

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?

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

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

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

How can I find direct flights from Porto to Heathrow?

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

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

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Why should you use Cheapflights to find cheap flight tickets from Porto to Heathrow?

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

Can Cheapflights notify me if prices for flights from Porto to Heathrow become cheaper?

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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 16 July 2025.