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Cheap flights from London Heathrow Airport to Porto from C$ 112

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OPO
26 Feb — 5 Mar1
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 27 January 2026.

Tue 3/311:45 a.m.
LHR
-
OPO
1 stop7h 05m
KLM
Wed 11/34:10 p.m.
OPO
-
LHR
1 stop4h 40m
KLM
Deal found 27/1C$ 278
Thu 5/310:00 a.m.
LHR
-
OPO
1 stop5h 25m
KLM
Tue 10/34:10 p.m.
OPO
-
LHR
1 stop4h 40m
KLM
Deal found 27/1C$ 279
Mon 9/38:40 a.m.
LHR
-
OPO
1 stop6h 45m
Multiple Airlines
Thu 12/311:20 a.m.
OPO
-
LHR
1 stop5h 15m
Multiple Airlines
Deal found 26/1C$ 286
Fri 13/38:25 p.m.
LHR
-
OPO
1 stop14h 05m
KLM
Fri 20/34:10 p.m.
OPO
-
LHR
1 stop4h 40m
KLM
Deal found 26/1C$ 293
Fri 20/28:25 p.m.
LHR
-
OPO
1 stop14h 05m
KLM
Tue 24/29:55 a.m.
OPO
-
LHR
1 stop7h 05m
KLM
Deal found 27/1C$ 297
Wed 4/28:15 a.m.
LHR
-
OPO
1 stop6h 45m
TAP AIR PORTUGAL
Mon 9/24:10 p.m.
OPO
-
LHR
1 stop5h 25m
TAP AIR PORTUGAL
Deal found 26/1C$ 315
Fri 20/28:25 p.m.
LHR
-
OPO
1 stop14h 05m
KLM
Mon 23/24:10 p.m.
OPO
-
LHR
1 stop16h 50m
KLM
Deal found 27/1C$ 318
Sun 22/21:40 p.m.
LHR
-
OPO
1 stop5h 15m
TAP AIR PORTUGAL
Thu 5/311:15 a.m.
OPO
-
LHR
1 stop6h 15m
TAP AIR PORTUGAL
Deal found 25/1C$ 331
Wed 13/56:45 p.m.
LHR
-
OPO
1 stop5h 55m
TAP AIR PORTUGAL
Thu 21/512:30 p.m.
OPO
-
LHR
1 stop5h 15m
TAP AIR PORTUGAL
Deal found 26/1C$ 342
Thu 8/1011:20 a.m.
LHR
-
OPO
1 stop5h 45m
TAP AIR PORTUGAL
Thu 15/1012:30 p.m.
OPO
-
LHR
1 stop5h 15m
TAP AIR PORTUGAL
Deal found 27/1C$ 344

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 27 January 2026.

Round-trip from

C$ 278

One-way from

C$ 116

Popular in

December

Cheapest in

January

Average price

C$ 274
KLM
  • KLM
  • 20/2-25/2
  • 2 total stops
  • 18h 45m total
  • London to Porto
Search Deals
12/3
  • 12/3
  • 1 total stop
  • 4h 45m total
  • London to Porto
Search Deals
High demand for flights, 8% potential price rise
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 January 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 27 January 2026.
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

Fri 20/2

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

1 stop14h 05m

Porto

Tue 24/2

9:55 a.m.-5:00 p.m.

1 stop7h 05m

C$ 297

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 20/2

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

1 stop14h 05m

Porto

Mon 23/2

4:10 p.m.-9:00 a.m.

1 stop16h 50m

C$ 318

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 28/2

6:00 a.m.-12:10 p.m.

1 stop6h 10m

Porto

Tue 3/3

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

1 stop6h 30m

C$ 331

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 22/2

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

1 stop5h 15m

Porto

Tue 3/3

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

1 stop6h 30m

C$ 331

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 22/2

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

1 stop5h 15m

Porto

Mon 2/3

6:55 a.m.-12:40 p.m.

1 stop5h 45m

C$ 331

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 11/3

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

1 stop6h 45m

Porto

Sat 14/3

12:00 p.m.-5:30 p.m.

1 stop5h 30m

C$ 331

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sun 8/2

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

1 stop6h 30m

Porto

Thu 12/2

10:20 a.m.-3:30 p.m.

1 stop5h 10m

C$ 331

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 25/4

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

1 stop7h 50m

Porto

Wed 29/4

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

1 stop5h 45m

C$ 344

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 13/6

11:20 a.m.-4:40 p.m.

1 stop5h 20m

Porto

Sat 20/6

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

1 stop5h 15m

C$ 356

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Tue 24/2

8:15 a.m.-7:00 p.m.

1 stop10h 45m

Porto

Wed 25/2

12:00 p.m.-9:35 p.m.

1 stop9h 35m

C$ 359

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

Showing 1-10 of 21 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 23 January 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 82 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$ 141). Flying from London Heathrow Airport to Porto in August is currently the most expensive (average of C$ 304). 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 6h 10m. 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Porto (average of C$ 141). Flying from London Heathrow Airport to Porto in August is currently the most expensive (average of C$ 304). 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

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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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