OPO - LHR

£57 Find Cheap Flights from Porto to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto to Heathrow departing on 21/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Porto to Heathrow (OPO-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Porto to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Porto to Heathrow

Mon, 20 Oct - Wed, 29 Oct
Vueling Logo
22:00 - 09:10OPO-LHR
11h 10m1 stop
Vueling Logo
15:30 - 19:20LHR-OPO
27h 50m1 stop
£118Vueling
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Wed, 15 Oct - Tue, 21 Oct
Vueling Logo
22:00 - 09:10OPO-LHR
11h 10m1 stop
Vueling Logo
20:50 - 08:00LHR-OPO
11h 10m1 stop
£124Vueling
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Wed, 15 Oct - Tue, 21 Oct
Vueling Logo
22:00 - 09:10OPO-LHR
11h 10m1 stop
Vueling Logo
20:50 - 08:00LHR-OPO
11h 10m1 stop
£125Vueling
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Sat, 11 Oct - Sat, 18 Oct
Vueling Logo
13:50 - 14:15OPO-LHR
24h 25m1 stop
Vueling Logo
20:50 - 08:00LHR-OPO
11h 10m1 stop
£131Vueling
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Thu, 16 Oct - Thu, 23 Oct
Logo
06:00 - 14:15OPO-LHR
8h 15m1 stop
Logo
20:50 - 08:00LHR-OPO
11h 10m1 stop
£134
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Mon, 20 Oct - Wed, 29 Oct
Logo
22:30 - 09:10OPO-LHR
34h 40m2 stops
Logo
15:30 - 19:20LHR-OPO
27h 50m1 stop
£137
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Thu, 9 Oct - Thu, 16 Oct
TAP AIR PORTUGAL Logo
16:00 - 22:00OPO-LHR
6h 00m1 stop
TAP AIR PORTUGAL Logo
13:45 - 19:00LHR-OPO
5h 15m1 stop
£155TAP AIR PORTUGAL
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Thu, 9 Oct - Thu, 16 Oct
TAP AIR PORTUGAL Logo
12:55 - 18:50OPO-LHR
5h 55m1 stop
TAP AIR PORTUGAL Logo
13:45 - 20:25LHR-OPO
6h 40m1 stop
£161TAP AIR PORTUGAL
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Sun, 21 Dec - Sun, 4 Jan
Iberia Logo
12:25 - 18:15OPO-LHR
5h 50m1 stop
Iberia Logo
10:45 - 20:00LHR-OPO
9h 15m1 stop
£170Iberia
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Thu, 18 Dec - Sat, 3 Jan
KLM Logo
11:15 - 16:05OPO-LHR
4h 50m1 stop
KLM Logo
14:05 - 22:25LHR-OPO
8h 20m1 stop
£171KLM
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Booking Insights

KAYAK's insights & trends for Porto to Heathrow flights

Get data-powered insights and trends into flights from Porto to Heathrow to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Porto to London Heathrow Airport?

What’s the cheapest day of the week to fly from Porto to London Heathrow Airport?

The average price of all round-trip flights from Porto to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

For Porto to London Heathrow Airport, Thursday is the cheapest day to fly on average and Monday is the most expensive. Flying from London Heathrow Airport back to Porto, the best deals are generally found on Tuesday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Porto to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Porto to London Heathrow Airport is February, where tickets cost £133 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £352 and £250 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Porto to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Porto to London Heathrow Airport, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

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Good to know - Cheap tickets from Porto to London Heathrow Airport

Low seasonMay
Cheapest flight£57
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (18% more expensive on average)
Flight from Porto to London Heathrow Airport

When to book flights from Porto to Heathrow

Are your dates flexible? Find out the best times to travel from Porto to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Porto to London Heathrow Airport flights

  • What is the cheapest flight from Porto to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Porto to London Heathrow Airport was £77 for a one-way ticket and £159 for a return.

  • Which aircraft models fly most regularly from Porto to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Porto to London Heathrow Airport?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Porto and London Heathrow Airport, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Porto to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Porto is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Porto to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Porto with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Porto to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Porto to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Porto to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
TAP AIR PORTUGALOverall score based on 1963 reviews
7.8Crew
6.3Entertainment
6.2Food
7.1Comfort
7.0Boarding
Airline reviews

Check-in guidance for transfer flight, boarding, in-flight service, seat comfort, etc.

2.0 MediocreAnonymous, Aug 2025LIS - LGW
Read more TAP AIR PORTUGAL reviews

Check-in guidance for transfer flight, boarding, in-flight service, seat comfort, etc.

Very rude person at the boarding desk; flight attendant coughing 3 inches from my face three times- not even covering her mouth; boarding process very unacceptable for older people with stairs to all planes (are you all stuck in the 1960’s?). I am sure that I am not remembering all of the negative things, but I am sure you get the message!

Flight was fine. Second meal ( fish sandwich on hard roll) was awful. My suitcase didn’t make the flight. It had been located, but won’t be delivered until tomorrow. Five days after flight

Boarding experience was awful. TAP claims I did not have check in luggage with tickets. I went 3-4 check in agents until I finally found a helpful kind agent who checked in my luggage with no fees. On top of that our flight was over 2 hours delayed with barely an apology or explanation.

The airport temperature at the airport and on the flight was too warm

Flight being delayed for 35 minutes had me lose the connection to my transport

Was the best airplane ✈️ ever that I never see I will traveling again again with u guys.

Flight from FNC to OBO was cancelled. We were rebooked to Lisbon later in the day. It was inconvenient but it worked out ok in the end.

Terrible flight attendant attitude. Average 3-star hotel employee has better hospitality skills. Business class seats are literally a joke. TAP executives should ride business class in other airlines to develop some rudimentary sense of what business class is.

Very pleasant flight, crew was very nice. The flight was really smooth, big plane. The seats are kind of close together, so comfort was just OK. The boarding process on the way back to New York was a little chaotic. It took a long time.There were no announcements, no loudspeaker just one staff yelling out of instructions and a lot of people crowding in before their term to board. So that could really be improved a lot.

Everything you need to know for your flight from Porto to Heathrow

Information on your arrival and departure airports

Porto (OPO)
Heathrow (LHR)

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