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Cheap flights from London Heathrow Airport to Porto from C$ 146

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OPO
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap 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 11 September 2025.

Round-trip from

C$ 220

One-way from

C$ 146

Popular in

August

Cheapest in

January

Average price

C$ 413
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 21/1-11/2
  • 2 total stops
  • 11h 50m total
  • London to Porto
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17/1
  • 17/1
  • 1 total stop
  • 16h 05m total
  • London to Porto
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Heathrow to Porto

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 11 September 2025.

Thu 13/1112:25 p.m.LHR - OPO
1 stop5h 35mTAP AIR PORTUGAL
Sun 16/114:00 p.m.OPO - LHR
1 stop5h 35mTAP AIR PORTUGAL
Deal found 11/9C$ 236
Fri 14/111:40 p.m.LHR - OPO
1 stop5h 20mTAP AIR PORTUGAL
Sun 16/114:00 p.m.OPO - LHR
1 stop5h 35mTAP AIR PORTUGAL
Deal found 9/9C$ 255
Sun 2/111:40 p.m.LHR - OPO
1 stop5h 15mTAP AIR PORTUGAL
Wed 5/1110:55 a.m.OPO - LHR
1 stop6h 35mTAP AIR PORTUGAL
Deal found 11/9C$ 256
Thu 6/111:40 p.m.LHR - OPO
1 stop5h 20mTAP AIR PORTUGAL
Sun 9/119:55 a.m.OPO - LHR
1 stop5h 35mTAP AIR PORTUGAL
Deal found 10/9C$ 294
Sat 29/1110:45 a.m.LHR - OPO
1 stop9h 15mBritish Airways
Sat 6/128:40 p.m.OPO - LHR
1 stop11h 45mBritish Airways
Deal found 11/9C$ 323
Mon 3/116:00 a.m.LHR - OPO
1 stop7h 00mTAP AIR PORTUGAL
Wed 5/114:05 p.m.OPO - LHR
1 stop5h 30mTAP AIR PORTUGAL
Deal found 11/9C$ 334
Fri 28/1110:00 a.m.LHR - OPO
1 stop5h 25mKLM
Sat 6/129:25 a.m.OPO - LHR
1 stop7h 35mKLM
Deal found 11/9C$ 345
Wed 3/1210:45 a.m.LHR - OPO
1 stop5h 15mBritish Airways
Thu 11/1212:25 p.m.OPO - LHR
1 stop4h 50mBritish Airways
Deal found 11/9C$ 353
Fri 10/106:45 p.m.LHR - OPO
1 stop13h 15mTAP AIR PORTUGAL
Mon 20/109:15 p.m.OPO - LHR
1 stop15h 30mTAP AIR PORTUGAL
Deal found 11/9C$ 359
Mon 29/96:00 a.m.LHR - OPO
1 stop11h 00mTAP AIR PORTUGAL
Thu 16/1010:00 a.m.OPO - LHR
1 stop5h 35mTAP AIR PORTUGAL
Deal found 10/9C$ 360
Sat 29/1110:45 a.m.LHR - OPO
1 stop9h 15mBritish Airways
Fri 5/128:40 p.m.OPO - LHR
1 stop22h 45mBritish Airways
Deal found 11/9C$ 364
Thu 23/106:00 a.m.LHR - OPO
1 stop5h 25mMultiple Airlines
Sun 26/106:55 a.m.OPO - LHR
1 stop5h 45mMultiple Airlines
Deal found 11/9C$ 366

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 11 September 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

Sun 2/11

1:40 p.m.-6:55 p.m.

1 stop5h 15m

Porto

Wed 5/11

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

1 stop6h 35m

C$ 256

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 22/1

3:15 p.m.-8:20 a.m.

1 stop17h 05m

Porto

Fri 23/1

7:05 p.m.-2:25 p.m.

1 stop19h 20m

C$ 277

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 20/1

6:45 p.m.-7:40 a.m.

1 stop12h 55m

Porto

Fri 13/2

8:40 p.m.-12:05 p.m.

1 stop15h 25m

C$ 323

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 23/1

5:00 p.m.-7:40 a.m.

1 stop14h 40m

Porto

Fri 13/2

8:40 p.m.-9:15 a.m.

1 stop12h 35m

C$ 323

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 7/12

6:15 a.m.-11:45 a.m.

1 stop5h 30m

Porto

Sat 13/12

12:25 p.m.-5:15 p.m.

1 stop4h 50m

C$ 323

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 19/1

6:45 p.m.-7:40 a.m.

1 stop12h 55m

Porto

Fri 13/2

8:40 p.m.-9:15 a.m.

1 stop12h 35m

C$ 323

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 19/1

4:30 p.m.-7:40 a.m.

1 stop15h 10m

Porto

Mon 9/2

8:40 p.m.-9:15 a.m.

1 stop12h 35m

C$ 323

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 21/1

6:45 p.m.-7:40 a.m.

1 stop12h 55m

Porto

Fri 13/2

8:40 p.m.-12:05 p.m.

1 stop15h 25m

C$ 323

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 22/1

4:35 p.m.-7:40 a.m.

1 stop15h 05m

Porto

Mon 9/2

8:40 p.m.-9:15 a.m.

1 stop12h 35m

C$ 323

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 23/1

5:00 p.m.-7:40 a.m.

1 stop14h 40m

Porto

Mon 9/2

8:40 p.m.-9:15 a.m.

1 stop12h 35m

C$ 323

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 20 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 29 August 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Porto (average of C$ 483). Flying from London Heathrow Airport to Porto in July is currently the most expensive (average of C$ 792). 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.

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 5h 15m. There are 1297 km between London Heathrow Airport and Porto. Both multi-stop and direct flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Vueling, which is currently one of the cheapest options available, starting at C$ 164. KLM flights start at C$ 175 while deals on TAP AIR PORTUGAL start at C$ 186 one-way.

  • 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Porto (average of C$ 483). Flying from London Heathrow Airport to Porto in July is currently the most expensive (average of C$ 792). 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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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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