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Cheap flights from London Heathrow Airport to Porto from C$ 107

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OPO
24 Aug — 31 Aug1
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 25 July 2026.

Sat 26/98:50 p.m.
LHR
-
OPO
1 stop11h 10m
Vueling
Tue 29/98:15 p.m.
OPO
-
LHR
1 stop18h 30m
Vueling
Deal found 24/7C$ 203
Tue 29/99:55 a.m.
LHR
-
OPO
1 stop6h 15m
Vueling
Tue 29/98:15 p.m.
OPO
-
LHR
1 stop18h 30m
Vueling
Deal found 22/7C$ 234
Wed 30/99:55 a.m.
LHR
-
OPO
1 stop6h 15m
Vueling
Wed 30/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 21/7C$ 239
Mon 7/98:50 p.m.
LHR
-
OPO
1 stop11h 10m
Vueling
Wed 9/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 20/7C$ 244
Wed 30/99:55 a.m.
LHR
-
OPO
1 stop6h 15m
Vueling
Wed 7/1010:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 21/7C$ 249
Mon 14/98:50 p.m.
LHR
-
OPO
1 stop11h 10m
Vueling
Mon 21/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 23/7C$ 252
Sun 6/98:50 p.m.
LHR
-
OPO
1 stop11h 10m
Vueling
Wed 9/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 20/7C$ 256
Wed 16/99:55 a.m.
LHR
-
OPO
1 stop6h 15m
Vueling
Wed 16/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 20/7C$ 258
Thu 17/98:50 p.m.
LHR
-
OPO
1 stop11h 10m
Vueling
Mon 21/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 23/7C$ 259
Mon 14/98:50 p.m.
LHR
-
OPO
1 stop11h 10m
Vueling
Sat 19/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 24/7C$ 261
Mon 28/99:55 a.m.
LHR
-
OPO
1 stop6h 15m
Vueling
Mon 28/910:00 p.m.
OPO
-
LHR
1 stop11h 10m
Vueling
Deal found 20/7C$ 262

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 25 July 2026.

Round-trip from

C$ 203

One-way from

C$ 107

Popular in

December

Cheapest in

January

Average price

C$ 470
Vueling
  • Vueling
  • 26/9-29/9
  • 2 total stops
  • 29h 40m total
  • London to Porto
Search Deals
Vueling
  • Vueling
  • 29/9
  • 1 total stop
  • 27h 10m total
  • London to Porto
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 25 July 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

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 30/9

9:55 a.m.-4:10 p.m.

1 stop6h 15m

Porto

Tue 6/10

10:00 p.m.-9:10 a.m.

1 stop11h 10m

C$ 263

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 4/9

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

1 stop11h 10m

Porto

Fri 11/9

10:00 p.m.-9:10 a.m.

1 stop11h 10m

C$ 355

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 14/10

8:00 a.m.-5:10 p.m.

1 stop9h 10m

Porto

Thu 15/10

11:00 a.m.-10:00 p.m.

1 stop11h 00m

C$ 363

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 4/8

6:50 a.m.-4:10 p.m.

1 stop9h 20m

Porto

Thu 6/8

6:30 p.m.-5:05 p.m.

1 stop22h 35m

C$ 411

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 18/1

8:05 p.m.-11:15 a.m.

1 stop15h 10m

Porto

Mon 1/2

9:10 a.m.-5:50 p.m.

2 stops8h 40m

C$ 430

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 14/8

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

1 stop11h 10m

Porto

Sat 22/8

10:00 p.m.-9:10 a.m.

1 stop11h 10m

C$ 442
Quickest round-trip

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 5/8

6:00 a.m.-5:10 p.m.

1 stop11h 10m

Porto

Fri 7/8

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

1 stop5h 45m

C$ 459

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 5/8

6:50 a.m.-12:05 p.m.

1 stop5h 15m

Porto

Thu 6/8

6:30 p.m.-10:15 a.m.

1 stop15h 45m

C$ 485

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Thu 6/8

6:50 a.m.-12:05 p.m.

1 stop5h 15m

Porto

Thu 6/8

6:30 p.m.-10:15 a.m.

1 stop15h 45m

C$ 575

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 4/8

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

1 stop12h 10m

Porto

Sun 9/8

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

1 stop11h 50m

C$ 583

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/7

Showing 1-10 of 21 resultsSorted by cheapest first
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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?

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 61 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$ 282). Flying from London Heathrow Airport to Porto in December is currently the most expensive (average of C$ 587). 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?

Airfare is below average for this route at the moment.

London Heathrow Airport to Porto flights typically cost between C$ 389 and C$ 527 in September.
The cheapest round-trip price found within the last 5 days was C$ 203 on Vueling (26 Sep-29 Sep).

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$ 282). Flying from London Heathrow Airport to Porto in December is currently the most expensive (average of C$ 587). 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

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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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