HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$76+ Cheap flights from Porto (OPO) to Heathrow (LHR)

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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LHR
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 Monday or Tuesday and return on a Sunday

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 July 1, 2025.

Round-trip from

$218
(Iberia)

One-way from

$90
(Kiwi.com)

Popular in

July

Cheapest in

May

Average price

$361
From Porto to London Heathrow
Search Deals
One-way flight from Porto to London Heathrow
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 1, 2025.

This Iberia deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:55 pmOPO - LHR
1 stop5h 35mIberia
Tue 1/139:55 amLHR - OPO
1 stop11h 20mIberia
Deal found 6/29$218
This FlightHub deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:00 pmOPO - LHR
1 stop4h 55mTAP AIR PORTUGAL
Tue 1/131:40 pmLHR - OPO
1 stop5h 20mTAP AIR PORTUGAL
Deal found 6/29$240
This SWISS deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/68:10 amOPO - LHR
1 stop10h 20mSWISS
Wed 1/148:05 pmLHR - OPO
1 stop15h 10mSWISS
Deal found 6/29$256
This KLM deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:30 amOPO - LHR
1 stop7h 20mKLM
Wed 9/175:10 pmLHR - OPO
1 stop5h 05mKLM
Deal found 6/30$259
This Brussels Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2310:10 amOPO - LHR
1 stop11h 25mBrussels Airlines
Sun 9/2111:05 amLHR - OPO
1 stop4h 55mBrussels Airlines
Deal found 6/30$282
This Expedia deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/138:15 amOPO - LHR
1 stop9h 50mMultiple Airlines
Wed 8/208:50 pmLHR - OPO
1 stop24h 30mMultiple Airlines
Deal found 6/29$288
This Lufthansa deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/711:05 amOPO - LHR
1 stop8h 35mLufthansa
Sun 8/109:00 amLHR - OPO
1 stop14h 20mLufthansa
Deal found 6/30$321

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated July 1, 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

Wed 10/8

4:55 pm-10:30 pm

1 stop5h 35m

London Heathrow

Tue 1/13

9:55 am-9:15 pm

1 stop11h 20m

$218

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 10/7

6:00 pm-10:55 pm

1 stop4h 55m

London Heathrow

Mon 1/12

6:00 am-1:00 pm

1 stop7h 00m

$240

PortoLondon

OPO - LHR

OPOLHR

Porto

Mon 10/6

8:10 am-6:30 pm

1 stop10h 20m

London Heathrow

Wed 1/14

8:05 pm-11:15 am

1 stop15h 10m

$256

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 9/11

6:30 am-1:50 pm

1 stop7h 20m

London Heathrow

Wed 9/17

5:10 pm-10:15 pm

1 stop5h 05m

$259

PortoLondon

OPO - LHR

OPOLHR

Porto

Sat 8/23

10:10 am-9:35 pm

1 stop11h 25m

London Heathrow

Sun 9/21

11:05 am-4:00 pm

1 stop4h 55m

$282

PortoLondon

OPO - LHR

OPOLHR

Porto

Wed 8/13

8:15 am-6:05 pm

1 stop9h 50m

London Heathrow

Wed 8/20

8:50 pm-9:20 pm

1 stop24h 30m

$288

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 8/7

11:05 am-7:40 pm

1 stop8h 35m

London Heathrow

Sun 8/10

9:00 am-11:20 pm

1 stop14h 20m

$321

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 7/22

8:15 pm-2:45 pm

1 stop18h 30m

$76

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 10/9

8:55 pm-2:45 pm

1 stop17h 50m

$88

PortoLondon

OPO - LHR

OPOLHR

Porto

Tue 10/14

10:00 pm-9:10 am

1 stop11h 10m

$94

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 15 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 round-trip 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 round-trip flight from Porto to Heathrow. Price data was last updated on June 27, 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, November is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of $661). Flying from Porto to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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 July 1, 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 noon tend to be the most expensive. A flight in the morning could potentially save you up to 31% on airfare.

How much does it cost to fly round-trip 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 July 1, 2025.
See what other customers who have flown with KLM, SWISS, and Brussels Airlines from Porto to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,366 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

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.
KLM
7.8
Good
1,366 reviews
KLM
7.8
Good
1,366 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

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.
SWISS
7.5
Good
1,653 reviews
KLM
7.8
Good
1,366 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

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.
Brussels Airlines
7.3
Good
352 reviews
KLM
7.8
Good
1,366 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

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.
Vueling
7.1
Good
1,170 reviews
KLM
7.8
Good
1,366 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

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.
TAP AIR PORTUGAL
7.1
Good
1,911 reviews
KLM
7.8
Good
1,366 reviews

Overall

7.8

Food

7.2

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

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) is the airport you will fly out of if you book a flight from Porto to London Heathrow. You should not have trouble finding flights to London Heathrow from Porto; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Porto airport to London Heathrow. It is only a 6.8 mi journey to Porto (OPO) from Porto’s city center.

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

    Currently priced at $218, Iberia will fly you from Porto to London Heathrow Airport and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and TAP AIR PORTUGAL - these airlines can fly you to your destination from $227 and $240, respectively. Iberia is priced at 8% 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?

    The cheapest airline one-way is Vueling, with whom users have recently found tickets for as low as $91. However, be on the lookout for offers from Iberia and Air Serbia, as they are both options that can get you from Porto to London Heathrow Airport for a low price.

  • 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 vacation 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, November is the cheapest month in which you can book a flight from Porto to London Heathrow Airport (average of $661). Flying from Porto to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Canterbury
Harrow
Dover
Stratford-upon-Avon
Gatwick
Orpington
Watford
Northampton
Croydon
Folkestone
Borehamwood
Broadway
Aylesbury
Chelmsford
Brentwood
Chichester
Swindon

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Porto to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to Heathrow flights
Lisbon to Gatwick flights
Porto to Gatwick flights
Faro to Heathrow flights
Faro to Gatwick flights

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 2,558,603 searches. Data last updated July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$181Average$329FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.