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Cheap flights from London Heathrow Airport to Porto from C$ 139

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OPO
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Porto

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Porto
Explore the most affordable flight options available from Heathrow to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Sun 28/126:00 a.m.LHR - OPO
1 stop8h 00mTAP AIR PORTUGAL
Wed 7/112:00 p.m.OPO - LHR
1 stop9h 35mTAP AIR PORTUGAL
Deal found 10/12C$ 386
Sun 28/126:00 a.m.LHR - OPO
1 stop12h 05mTAP AIR PORTUGAL
Tue 6/18:00 p.m.OPO - LHR
1 stop26h 40mTAP AIR PORTUGAL
Deal found 10/12C$ 414
Thu 11/126:00 a.m.LHR - OPO
1 stop25h 45mTAP AIR PORTUGAL
Sun 14/128:00 p.m.OPO - LHR
1 stop16h 40mTAP AIR PORTUGAL
Deal found 10/12C$ 416
Thu 25/126:30 p.m.LHR - OPO
1 stop16h 30mTAP AIR PORTUGAL
Sun 28/128:00 p.m.OPO - LHR
1 stop16h 40mTAP AIR PORTUGAL
Deal found 10/12C$ 437
Sat 27/126:30 p.m.LHR - OPO
1 stop6h 00mTAP AIR PORTUGAL
Wed 7/112:00 p.m.OPO - LHR
1 stop9h 35mTAP AIR PORTUGAL
Deal found 10/12C$ 461
Sun 28/126:00 a.m.LHR - OPO
1 stop12h 05mTAP AIR PORTUGAL
Tue 30/122:00 p.m.OPO - LHR
1 stop22h 40mTAP AIR PORTUGAL
Deal found 10/12C$ 470
Sat 27/126:00 a.m.LHR - OPO
1 stop12h 00mTAP AIR PORTUGAL
Tue 6/18:00 p.m.OPO - LHR
1 stop26h 40mTAP AIR PORTUGAL
Deal found 10/12C$ 490
Tue 30/126:00 a.m.LHR - OPO
1 stop7h 05mTAP AIR PORTUGAL
Tue 30/126:00 p.m.OPO - LHR
1 stop18h 40mTAP AIR PORTUGAL
Deal found 11/12C$ 510
Thu 18/126:00 a.m.LHR - OPO
1 stop7h 05mTAP AIR PORTUGAL
Sat 20/126:55 a.m.OPO - LHR
1 stop5h 45mTAP AIR PORTUGAL
Deal found 11/12C$ 514
Wed 17/128:15 a.m.LHR - OPO
1 stop8h 45mTAP AIR PORTUGAL
Fri 26/1211:00 a.m.OPO - LHR
1 stop10h 35mTAP AIR PORTUGAL
Deal found 11/12C$ 530
Sat 27/126:00 a.m.LHR - OPO
1 stop6h 10mTAP AIR PORTUGAL
Sat 27/124:55 p.m.OPO - LHR
1 stop18h 30mTAP AIR PORTUGAL
Deal found 10/12C$ 536

Find flight deals from Heathrow to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Porto (OPO). 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 12 December 2025.

Round-trip from

C$ 218

One-way from

C$ 139

Popular in

December

Cheapest in

January

Average price

C$ 553
Vueling
  • Vueling
  • 5/3-24/3
  • 2 total stops
  • 23h 25m total
  • London to Porto
Search Deals
Vueling
  • Vueling
  • 25/1
  • 1 total stop
  • 16h 40m total
  • London to Porto
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Porto 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 629,999 searches. Data last updated 12 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Porto that are best for you.

Fly from

Heathrow

Fly to

Porto

Route

Depart

Return

Price

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 20/1

6:00 a.m.-3:00 p.m.

1 stop9h 00m

Porto

Fri 23/1

12:00 p.m.-6:55 p.m.

1 stop6h 55m

C$ 279

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 11/1

4:30 p.m.-10:00 p.m.

1 stop5h 30m

Porto

Thu 15/1

12:05 p.m.-5:30 p.m.

1 stop5h 25m

C$ 279

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 11/1

8:25 p.m.-10:30 a.m.

1 stop14h 05m

Porto

Thu 15/1

11:20 a.m.-4:35 p.m.

1 stop5h 15m

C$ 281

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 10/3

6:00 a.m.-1:05 p.m.

1 stop7h 05m

Porto

Mon 23/3

10:55 a.m.-5:30 p.m.

1 stop6h 35m

C$ 306

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 7/3

6:30 p.m.-12:30 a.m.

1 stop6h 00m

Porto

Fri 20/3

11:00 a.m.-5:30 p.m.

1 stop6h 30m

C$ 306

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 8/3

8:15 a.m.-3:00 p.m.

1 stop6h 45m

Porto

Thu 26/3

2:00 p.m.-10:40 p.m.

1 stop8h 40m

C$ 306

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 9/3

6:00 a.m.-1:00 p.m.

1 stop7h 00m

Porto

Thu 26/3

12:05 p.m.-6:55 p.m.

1 stop6h 50m

C$ 306

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 9/3

6:00 a.m.-1:00 p.m.

1 stop7h 00m

Porto

Fri 20/3

12:00 p.m.-6:55 p.m.

1 stop6h 55m

C$ 306

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 18/1

12:25 p.m.-6:55 p.m.

1 stop6h 30m

Porto

Thu 22/1

4:00 p.m.-10:40 p.m.

1 stop6h 40m

C$ 306

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 7/3

6:30 p.m.-12:30 a.m.

1 stop6h 00m

Porto

Thu 26/3

10:20 a.m.-5:30 p.m.

1 stop7h 10m

C$ 306

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 22 results
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Best time to book a flight from Heathrow to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Heathrow 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 London Heathrow Airport to Porto

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Porto. Price data was last updated on 5 December 2025.

The price you pay for your flight from London Heathrow Airport to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 32 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Porto (average of C$ 142). Flying from London Heathrow Airport to Porto in August is currently the most expensive (average of C$ 303). 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.

How much does it cost to fly round-trip from London Heathrow Airport to Porto?

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Porto. 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 into for flights to Porto from London Heathrow?

    Located just 10.9 km from the city centre, Porto is the airport most travellers will use when flying to Porto from London Heathrow. Booking flights from London Heathrow to Porto (OPO) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • How long is the flight from London Heathrow Airport to Porto?

    Departing from London Heathrow Airport to Porto will take you 9h. There are 1297 km between London Heathrow Airport and Porto.

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

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

  • How can I find direct flights from Heathrow to Porto?

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Porto 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 London Heathrow Airport to Porto?

    Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Porto (average of C$ 142). Flying from London Heathrow Airport to Porto in August is currently the most expensive (average of C$ 303). 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
Aveiro
Esposende

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Alternative routes for Heathrow to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Heathrow to Porto?

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

Need flexible booking options for your flight to Porto from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Not ready to book yet? You can track prices for flights from Heathrow to Porto on Cheapflights with our Price Alert feature and get notified when better prices are available.

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