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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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OPO
26 May — 2 Jun1
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 26 April 2026.

Tue 23/62:45 p.m.
LHR
-
OPO
1 stop6h 30m
Multiple Airlines
Mon 6/79:25 a.m.
OPO
-
LHR
1 stop7h 10m
Multiple Airlines
Deal found 23/4C$ 292
Sat 6/611:45 a.m.
LHR
-
OPO
1 stop10h 30m
Multiple Airlines
Sun 7/66:30 a.m.
OPO
-
LHR
1 stop7h 15m
Multiple Airlines
Deal found 23/4C$ 303
Tue 23/62:45 p.m.
LHR
-
OPO
1 stop6h 30m
KLM
Tue 7/711:30 a.m.
OPO
-
LHR
1 stop4h 45m
KLM
Deal found 22/4C$ 312
Tue 23/62:45 p.m.
LHR
-
OPO
1 stop6h 30m
Multiple Airlines
Sat 4/76:30 a.m.
OPO
-
LHR
1 stop7h 15m
Multiple Airlines
Deal found 23/4C$ 313
Tue 23/62:45 p.m.
LHR
-
OPO
1 stop6h 30m
KLM
Mon 6/75:00 a.m.
OPO
-
LHR
1 stop5h 45m
KLM
Deal found 22/4C$ 327
Sat 9/55:10 p.m.
LHR
-
OPO
1 stop5h 05m
Multiple Airlines
Wed 13/55:55 a.m.
OPO
-
LHR
1 stop7h 50m
Multiple Airlines
Deal found 26/4C$ 332
Mon 11/52:45 p.m.
LHR
-
OPO
1 stop7h 30m
KLM
Thu 14/55:00 a.m.
OPO
-
LHR
1 stop11h 15m
KLM
Deal found 22/4C$ 340
Wed 6/55:10 p.m.
LHR
-
OPO
1 stop5h 05m
KLM
Fri 15/55:00 a.m.
OPO
-
LHR
1 stop5h 45m
KLM
Deal found 25/4C$ 344
Mon 22/65:10 p.m.
LHR
-
OPO
1 stop5h 05m
Multiple Airlines
Mon 6/79:25 a.m.
OPO
-
LHR
1 stop7h 10m
Multiple Airlines
Deal found 24/4C$ 351
Tue 5/55:10 p.m.
LHR
-
OPO
1 stop5h 05m
KLM
Sat 9/55:00 a.m.
OPO
-
LHR
1 stop8h 50m
KLM
Deal found 25/4C$ 366

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 26 April 2026.

Round-trip from

C$ 292

One-way from

C$ 146

Popular in

May

Cheapest in

January

Average price

C$ 414
Air France
  • Air France
  • 23/6-6/7
  • 2 total stops
  • 13h 40m total
  • London to Porto
Search Deals
Vueling
  • Vueling
  • 8/6
  • 1 total stop
  • 11h 10m total
  • London to Porto
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 26 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 28/5

5:10 p.m.-10:15 p.m.

1 stop5h 05m

Porto

Sun 7/6

5:00 a.m.-10:45 a.m.

1 stop5h 45m

C$ 414

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 17/9

4:35 p.m.-11:10 p.m.

1 stop6h 35m

Porto

Mon 21/9

5:05 a.m.-10:20 a.m.

1 stop5h 15m

C$ 420

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 21/6

6:30 a.m.-3:30 p.m.

1 stop9h 00m

Porto

Wed 24/6

5:55 a.m.-1:45 p.m.

1 stop7h 50m

C$ 518

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 14/5

6:00 a.m.-5:00 p.m.

1 stop11h 00m

Porto

Sun 17/5

5:05 a.m.-10:20 a.m.

1 stop5h 15m

C$ 604

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 21/7

7:50 p.m.-8:00 a.m.

1 stop12h 10m

Porto

Sat 1/8

3:30 p.m.-10:55 p.m.

1 stop7h 25m

C$ 700

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 18/7

7:50 p.m.-7:50 a.m.

1 stop12h 00m

Porto

Sat 5/9

7:00 a.m.-12:45 p.m.

1 stop5h 45m

C$ 767

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 16/7

6:40 p.m.-8:45 a.m.

1 stop14h 05m

Porto

Thu 3/9

11:50 a.m.-9:40 p.m.

1 stop9h 50m

C$ 769

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 2/7

8:50 p.m.-11:45 a.m.

2 stops14h 55m

Porto

Mon 6/7

4:40 p.m.-9:10 a.m.

2 stops16h 30m

C$ 787

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 15/7

8:50 p.m.-11:45 a.m.

2 stops14h 55m

Porto

Sun 19/7

8:20 a.m.-8:05 p.m.

2 stops11h 45m

C$ 790

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 18/6

10:50 a.m.-9:20 p.m.

2 stops10h 30m

Porto

Wed 24/6

8:35 a.m.-7:10 p.m.

2 stops10h 35m

C$ 875

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/4

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

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 31 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$ 272). Flying from London Heathrow Airport to Porto in May is currently the most expensive (average of C$ 522). 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 5h 05m. There are 1297 km between London Heathrow Airport and Porto. Both multi-stop and direct flights can be found to your destination and back.

  • 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$ 272). Flying from London Heathrow Airport to Porto in May is currently the most expensive (average of C$ 522). 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?

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Aveiro

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Alternative routes for Heathrow to Porto

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How does Cheapflights help users find flights from Heathrow to Porto?

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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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