LHR - OPO

£57 Find Cheap Flights from London Heathrow Airport to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Porto departing on 3/11. 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

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Porto.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Porto.
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Cheap Flights from Heathrow to Porto (LHR-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Porto 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 Heathrow to Porto

mer., 8 oct. - mer., 15 oct.
 Logo
09:55 - 16:15LHR-OPO
6h 20m1 stop
 Logo
06:10 - 12:20OPO-LHR
6h 10m1 stop
mar., 23 sept. - lun., 29 sept.
 Logo
15:05 - 21:45LHR-OPO
6h 40m1 stop
 Logo
22:00 - 09:10OPO-LHR
11h 10m1 stop
sam., 10 janv. - mar., 13 janv.
Vueling Logo
20:50 - 08:10LHR-OPO
11h 20m1 stop
Vueling Logo
08:45 - 18:00OPO-LHR
9h 15m1 stop
£141Vueling
Find Deal
mar., 23 sept. - mer., 24 sept.
Vueling Logo
20:50 - 08:00LHR-OPO
11h 10m1 stop
Vueling Logo
22:00 - 09:10OPO-LHR
11h 10m1 stop
£146Vueling
Find Deal
dim., 14 sept. - dim., 21 sept.
TAP AIR PORTUGAL Logo
08:00 - 17:00LHR-OPO
9h 00m1 stop
TAP AIR PORTUGAL Logo
05:05 - 10:20OPO-LHR
5h 15m1 stop
£153TAP AIR PORTUGAL
Find Deal
mer., 10 sept. - mer., 17 sept.
TAP AIR PORTUGAL Logo
06:00 - 14:05LHR-OPO
8h 05m1 stop
TAP AIR PORTUGAL Logo
10:00 - 17:45OPO-LHR
7h 45m1 stop
£154TAP AIR PORTUGAL
Find Deal
ven., 9 janv. - ven., 16 janv.
British Airways Logo
17:00 - 07:40LHR-OPO
14h 40m1 stop
British Airways Logo
20:40 - 12:05OPO-LHR
15h 25m1 stop
£174British Airways
Find Deal
mar., 9 déc. - ven., 12 déc.
British Airways Logo
07:30 - 07:40LHR-OPO
24h 10m1 stop
British Airways Logo
20:40 - 12:05OPO-LHR
15h 25m1 stop
£180British Airways
Find Deal
mer., 10 déc. - mar., 16 déc.
Lufthansa Logo
06:35 - 12:50LHR-OPO
6h 15m1 stop
Lufthansa Logo
13:45 - 19:35OPO-LHR
5h 50m1 stop
£181Lufthansa
Find Deal
jeu., 8 janv. - sam., 10 janv.
Lufthansa Logo
06:35 - 13:10LHR-OPO
6h 35m1 stop
Lufthansa Logo
13:45 - 19:35OPO-LHR
5h 50m1 stop
£184Lufthansa
Find Deal
Booking Insights

KAYAK's insights & trends for Heathrow to Porto flights

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

How much is a round-trip flight from London Heathrow Airport to Porto?

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

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

If you are looking for a flight deal from London Heathrow Airport to Porto, look for departures on Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Porto, Thursday is the cheapest day to fly and Monday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Porto, 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 London Heathrow Airport to Porto is January, where tickets cost £147 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is £287 and £275 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Porto, 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 London Heathrow Airport to Porto, you should book around 5 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.


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

Low seasonJanuary
Cheapest flight£57
Best time to beat the crowds (31% less expensive on average)
Most popular time to fly (36% more expensive on average)
Flight from London Heathrow Airport to Porto

When to book flights from Heathrow to Porto

Are your dates flexible? Find out the best times to travel from Heathrow to Porto 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 London Heathrow Airport to Porto flights

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Porto was £76 for a one-way ticket and £174 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Porto?

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Porto, also known as Porto.

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

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

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

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

  • Which is the best airline for flights from London to Porto, SWISS or Brussels Airlines?

    The two airlines most popular with KAYAK users for flights from London to Porto are SWISS and Brussels Airlines. With an average price for the route of £182 and an overall rating of 7.5, SWISS is the most popular choice. Brussels Airlines is also a great choice for the route, with an average price of £294 and an overall rating of 7.2.

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

    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 London Heathrow Airport to Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from London Heathrow Airport 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 London Heathrow Airport to Porto?

    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 Porto with an airline and back to London Heathrow Airport with another airline.

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

    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 Porto from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Heathrow to Porto

 
See real verified KAYAK customer reviews for airlines flying from London to Porto. 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 Heathrow to Porto? 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.
7.2
Brussels AirlinesOverall score based on 350 reviews
7.0Comfort
7.3Boarding
7.9Crew
6.1Entertainment
6.2Food
Airline reviews

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

8.0 ExcellentAlexandre, Jul 2025BRU - GVA
Read more Brussels Airlines reviews

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

I never board the flight. My visa was delayed and when I tried calling Kayak, no one answer and I still have not heard from anyone.

All great. Very efficient. Good emails that kept us in the know

Original flight was canceled, booked another one and find out when checking I was on the waiting list. Horrible experience

Actually this is my first time using airline I was in every single thing that happened throughout our journey, the appearance of the plane inside furnished about the seating the flight attendants and many many more I was so excited throughout thank you Brussels Airlines for the great service.

On board service was decent. I like the legroom at UA that seems to be more than in other airlines

It was really good because the employees were very nice and fun to talk to. The entertainment was nice because they had plenty of movies to watch.

Crew was enthusiastic. Meal was surprisingly good. They came to give water very frequently. Negative that the seat reclining didn't work

That was a short flight by the only time I could actually sleep

How can a national carrier and part of Lufthansa group not even provide complimentary water and a snack in such a long flight ?

There was chaos at the Naples airport. We arrived three hours early for the flight but there was no invitation available about where to go to check bags until an hour later. Then we had to go to a different terminal to check our bags and check in and back to the first to board.

We flew TAP last October from Newark to Lisbon. The meal was bad. This flight had good food. Also, this flight was delayed. There were TAP employees waiting at Lisbon to make sure we made our connecting flight. I find the TAP website and app frustrating, but the service once we reached the airport was very good

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

Boarding too way too long. Biggest peeve: zero in-seat power in economy! No plug sockets, no USB ports. Plane was an A330, so not old.

boarding is so disorganized, i was literally appalled at the boarding experience

Comfortable but not Polaris or Delta comfort Business Class. Overall 7 out of 10

Tap air Portugal was the best I will traveling again with u guys. Thank u.

The long wait at JFK made the trip horrible. Also not having enough buses when we deplaned was annoying

Terrible! I had to cancel our flights due to my wife Carmen requiring an unexpected second cancer surgery. I first contacted orbitz about obtaining a credit due to medical interruption and orbitz directed me to TAP. I contacted TAP and the representative directed me back to orbitz and refused to even explain what TAP’s medical interruption policy was or how it worked—I wanted that information for a second call to orbitz. Terrible service at a particularly difficult time.

Food was edible, not great, and served by attendants who looked like they really were not happy working the flight. The section I was in was too warm making the 11 hour flight uncomfortable. Other areas on the plane were fine.

Horrible almost missed my flight because my 1st flight was delayed. Airline crew is so unprofessional. The people on the plane do whatever they want kids running screaming. Will never fly this airline again Suitcases never arrived

Flight was delayed 3 hours and 15 minutes. The delay caused me to miss my tour group due to arriving late.

Even in the premium economy, I found the seats incredibly uncomfortable. I hated that booking through Kayak, it wasn't clear that it was a Level flight, not Iberia. Everything felt cheaply made and not at all worth the airfare we paid.

It was a wonderful experience with great food, great staff, and no difficulties boarding!

Paid for my seat 4 months ago. Did not pay the extra for specific seat assignment ( never have and never was a problem). Could not electronically check in (found out it was due to overbooking and that unassigned seats get bumped first - never happened to me before). Luckily, did make the flight. Very stressful - would have been extremely disruptive for my travel plans. UK Visa - never notified by Kayak or BA that a visa was required. Had to spend 15 minutes to download and complete app at the flight counter and pay $25, and was told they would let me know in 3 days if I would get it (flight landing in 10 hours from when I completed app). Luckily, visa was approved before landing. Unnecessary stress created here. Food - main meal, curry chicken barely palatable with unrecognizable vegetable. Desert cup, cheesecake, also barely palatable. Salad cup was good. Small water offered only 3 times (before main meal, at main meal, at morning snack) - not nearly enough for long flight.

Not having to check carry on bags when plane wasn’t full. (The told us it was)

Service and food were excellent, could have been more info in English.

Charging $300 to be able to pick a seat next to your wife was nothing less than extortion.

Flight delayed Service could be better Iberia staff are not really friendly

I’m very mad because I paid an extra $105 to change seats to an exit row with more leg room. The app clearly showed a gap in between the seats in the row I changed my seat to and I paid for it. When I boarded the plane, it wasn’t an exit row seat and no more room than my original seat. I feel like I was ripped off $105.

Not happy with price of luggage or that we had no choice but to pay whether cabin or hold. I didn't book seats but this is unnecessary extra money along with suitcase

We accidentally purchased twice the bags we needed. Our fault, but the ticket was not clear to us, and it asked us to purchase bags at checkin. When we notified them to get credit back at the airport, they said to contact customer service. We flew the flight and then contracted customer service. They said no credits after the flight has flown. Not customer service oriented at all. They know we didn’t check that many bags and kept our money for a service they did not provide. Be aware and very careful of what you are purchasing from them because they will not make it right if there is an error.

sadly in Basel & Naples- no jetway we had to climb up and down stairs with our max size carry-on luggage, which was not fun!!!

This was our first time using them. I gave okay ratings for food and entertainment because it was minimal or not provided so I couldn't judge, but much better than most budget carriers we have ever used.

We were charged a ridiculous amount for a name spelling error on ticket which I would’ve corrected if I received pre-check info more than 1/2hr before flight. Then we were told at ticket counter that our bags were fine for boarding but then we’re charged another ridiculous amount to take in our luggage despite being told differently. Flight itself was great. Charges were unfair.

Apart from an email about re configuring passenger seating less than 24hrs before flying it was all good.

There were a lot (4 I think) of EasyJet flights leaving Agadir, we arrived two and a half ours before our flight. Very slow to get through the booking in, passport control and security!! We had booked in on line but had to Queue with others who had not to drop our bags off!,

We boarded and then sat on the tarmac for an hour….probably not E Jets fault. But the gentleman that checked us in and took our luggage was exceptionally friendly and calming for early morning/ confused passengers. As always, it’s the people that make or break an experience, right?

I was hesitant to book with a low cost airline due to previous experience but Easy Jet surpassed my expectations. I would definitely book a flight with them again! Seemless booking, upfront about baggage fees, professional, and helpful staff.

Kayak sent several notifications that the flight was late. This contradicted the information on the airport boards. This was extremely confusing and we very nearly missed the flight purely because we double checked with the info desk when the flight stays said’closed’. Kayak notifications are therefore unreliable and pointlesa

Everything about the flight check-in was smooth no line the plane is clean and bathroom

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

All good. Loo’s weren’t great and as clean as i would like.

A great flight. The crew was excellent too. Of particular note of excellence was the gluten-free meal which was one of the best offerings I’ve ever had on a plane. Outstanding work, BA chefs.

I was put into business class. Wow! My flight attendant was great! The food amazing’

I got stuffed on both flights into terrible seats. Second flight the seat didn’t even recline and fit s tall person, that’s very uncomfortable.

I arrived at Bridgetown only to fins that a suitcase was missing. It was left at Manchester. I had to wait wait 2 days before deciding on going to collect from the airport personally. I am not happy about paying for baggage at the airport. This I thought was included in the price of the ticket. Who goes away for 2 weeks and does not bring luggage. This was a total rip off and I am not happy. I need someone to contact me before returning so that I don't have to pay all over again to return homde.

Boarding market okay just because of the delay we had, but not related to the crew in any way…

Not so good with their baggage handling as they damaged one of my check in luggage

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

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