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Cheap flights from London Heathrow Airport to Porto from C$ 103

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OPO
13 Apr — 20 Apr1
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 14 March 2026.

Thu 9/45:10 p.m.
LHR
-
OPO
1 stop5h 05m
Multiple Airlines
Thu 16/45:55 a.m.
OPO
-
LHR
1 stop7h 50m
Multiple Airlines
Deal found 10/3C$ 276
Tue 14/42:45 p.m.
LHR
-
OPO
1 stop7h 30m
Multiple Airlines
Tue 28/46:15 a.m.
OPO
-
LHR
1 stop10h 20m
Multiple Airlines
Deal found 12/3C$ 278
Thu 9/45:10 p.m.
LHR
-
OPO
1 stop5h 05m
KLM
Wed 15/45:00 a.m.
OPO
-
LHR
1 stop5h 45m
KLM
Deal found 10/3C$ 279
Sun 1/118:25 p.m.
LHR
-
OPO
1 stop14h 05m
Multiple Airlines
Sat 7/1111:25 a.m.
OPO
-
LHR
1 stop6h 55m
Multiple Airlines
Deal found 13/3C$ 285
Thu 12/36:00 a.m.
LHR
-
OPO
1 stop7h 05m
TAP AIR PORTUGAL
Thu 19/310:20 a.m.
OPO
-
LHR
1 stop5h 10m
TAP AIR PORTUGAL
Deal found 11/3C$ 302
Sat 27/611:45 a.m.
LHR
-
OPO
1 stop6h 25m
Multiple Airlines
Thu 2/75:55 a.m.
OPO
-
LHR
1 stop7h 50m
Multiple Airlines
Deal found 14/3C$ 315
Thu 9/45:10 p.m.
LHR
-
OPO
1 stop5h 05m
Multiple Airlines
Fri 17/45:55 a.m.
OPO
-
LHR
1 stop7h 50m
Multiple Airlines
Deal found 10/3C$ 316
Fri 10/41:45 p.m.
LHR
-
OPO
1 stop9h 15m
TAP AIR PORTUGAL
Tue 14/410:30 p.m.
OPO
-
LHR
1 stop11h 50m
TAP AIR PORTUGAL
Deal found 14/3C$ 320
Wed 18/38:15 a.m.
LHR
-
OPO
1 stop8h 45m
TAP AIR PORTUGAL
Sat 21/312:00 p.m.
OPO
-
LHR
1 stop5h 30m
TAP AIR PORTUGAL
Deal found 14/3C$ 322
Tue 17/38:15 a.m.
LHR
-
OPO
1 stop8h 45m
TAP AIR PORTUGAL
Tue 24/36:55 a.m.
OPO
-
LHR
1 stop5h 45m
TAP AIR PORTUGAL
Deal found 12/3C$ 324

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 14 March 2026.

Round-trip from

C$ 259

One-way from

C$ 103

Popular in

May

Cheapest in

January

Average price

C$ 316
Vueling
  • Vueling
  • 15/4-23/4
  • 2 total stops
  • 12h 35m total
  • London to Porto
Search Deals
Vueling
  • Vueling
  • 27/4
  • 1 total stop
  • 11h 10m total
  • London to Porto
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 14 March 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

Tue 5/5

6:45 p.m.-12:40 a.m.

1 stop5h 55m

Porto

Mon 11/5

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

1 stop5h 15m

C$ 332

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 23/6

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

1 stop7h 00m

Porto

Sat 27/6

12:00 p.m.-6:50 p.m.

1 stop6h 50m

C$ 335

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 20/4

11:20 a.m.-5:00 p.m.

1 stop5h 40m

Porto

Fri 24/4

4:00 p.m.-10:05 p.m.

1 stop6h 05m

C$ 358

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 25/5

6:45 p.m.-12:40 a.m.

1 stop5h 55m

Porto

Thu 28/5

12:35 p.m.-5:45 p.m.

1 stop5h 10m

C$ 462

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 1/4

7:50 p.m.-9:00 a.m.

1 stop13h 10m

Porto

Tue 7/4

9:15 p.m.-10:20 a.m.

1 stop13h 05m

C$ 486
Quickest round-trip

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 14/8

11:05 a.m.-4:00 p.m.

1 stop4h 55m

Porto

Tue 25/8

5:00 p.m.-9:35 p.m.

1 stop4h 35m

C$ 504

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 14/4

3:50 p.m.-8:00 a.m.

2 stops16h 10m

Porto

Tue 28/4

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

2 stops10h 35m

C$ 590

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 10/7

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

2 stops10h 30m

Porto

Fri 17/7

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

2 stops10h 35m

C$ 836

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 20/6

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

2 stops14h 55m

Porto

Thu 25/6

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

2 stops11h 45m

C$ 850
Cheapest one-way

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 7/6

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

1 stop11h 00m

C$ 187

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/3

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?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Porto. Price data was last updated on 6 March 2026.

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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Porto (average of C$ 133). Flying from London Heathrow Airport to Porto in August is currently the most expensive (average of C$ 309). 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Porto (average of C$ 133). Flying from London Heathrow Airport to Porto in August is currently the most expensive (average of C$ 309). 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

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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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