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Cheap flights from London Heathrow Airport to Porto from C$ 147

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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — OPO
3 Aug — 10 Aug1
1 adult

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 29 July 2025.

Round-trip from

C$ 311

One-way from

C$ 147

Popular in

August

Cheapest in

January

Average price

C$ 439
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 6/11-9/11
  • 2 total stops
  • 11h 10m total
  • London to Porto
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Air Serbia
  • Air Serbia
  • 6/8
  • 1 total stop
  • 20h 20m total
  • London to Porto
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 29 July 2025.

Thu 6/1112:25 p.m.LHR - OPO
1 stop5h 35mTAP AIR PORTUGAL
Sun 9/119:55 a.m.OPO - LHR
1 stop5h 35mTAP AIR PORTUGAL
Deal found 29/7C$ 311
Sat 22/114:40 p.m.LHR - OPO
1 stop7h 05mLufthansa
Sun 23/119:55 a.m.OPO - LHR
2 stops10h 55mLufthansa
Deal found 28/7C$ 347
Wed 27/811:05 a.m.LHR - OPO
1 stop4h 55mBrussels Airlines
Sat 6/910:10 a.m.OPO - LHR
1 stop10h 45mBrussels Airlines
Deal found 29/7C$ 350
Fri 15/88:05 p.m.LHR - OPO
1 stop28h 05mSWISS
Thu 4/92:35 p.m.OPO - LHR
1 stop17h 40mSWISS
Deal found 29/7C$ 380
Mon 25/88:50 p.m.LHR - OPO
1 stop11h 10mIberia
Mon 1/910:00 p.m.OPO - LHR
1 stop11h 10mIberia
Deal found 28/7C$ 424

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 29 July 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

Thu 6/11

12:25 p.m.-6:00 p.m.

1 stop5h 35m

Porto

Sun 9/11

9:55 a.m.-3:30 p.m.

1 stop5h 35m

C$ 311

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Sat 22/11

4:40 p.m.-11:45 p.m.

1 stop7h 05m

Porto

Sun 23/11

9:55 a.m.-8:50 p.m.

2 stops10h 55m

C$ 347

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 27/8

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

1 stop4h 55m

Porto

Sat 6/9

10:10 a.m.-8:55 p.m.

1 stop10h 45m

C$ 350

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 15/8

8:05 p.m.-12:10 a.m.

1 stop28h 05m

Porto

Thu 4/9

2:35 p.m.-8:15 a.m.

1 stop17h 40m

C$ 380

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 25/8

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

1 stop11h 10m

Porto

Mon 1/9

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

1 stop11h 10m

C$ 424

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 6/8

1:30 p.m.-9:50 a.m.

1 stop20h 20m

C$ 147

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Wed 15/10

6:45 p.m.-3:00 p.m.

1 stop20h 15m

C$ 165

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Mon 5/1

3:45 p.m.-10:25 p.m.

1 stop6h 40m

C$ 178

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 29/8

5:50 p.m.-9:20 a.m.

1 stop15h 30m

C$ 185

LondonPorto

LHR - OPO

LHROPO

London Heathrow

Fri 15/8

8:05 p.m.-12:10 a.m.

1 stop28h 05m

C$ 188

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 13 results
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 25 July 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$ 789). 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?

What’s the top layover airport for flights from London Heathrow Airport to Porto?

Share of one-stop round-trip flights from London Heathrow Airport to Porto chosen by Cheapflights users in the past 12 months, using the same layover each way.

Geneva (GVA) – chosen by Cheapflights users on 50% of one-stop itineraries from London Heathrow Airport to Porto on Cheapflights.

What’s the cheapest layover airport for flights from London Heathrow Airport to Porto?

Average round-trip fare for 1-stop flights from London Heathrow Airport to Porto, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Lisbon (LIS) is the most affordable 1-stop option, with an average round-trip price of C$ 325.

What’s the fastest layover option from London Heathrow Airport to Porto?

Shortest average travel time for 1-stop one-way flights from London Heathrow Airport to Porto, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Lisbon (LIS) have the shortest average one-way travel time for 1-stop routes: 2h 35m.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Porto?

Average layover duration for 1-stop one-way flights from London Heathrow Airport to Porto, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Lisbon (LIS) offer the fastest connection on this route, with an average layover time of 1h 25m.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated 29 July 2025.
Get a feel of what it's like to fly with KLM,SWISS, andBrussels Airlines from London Heathrow Airport to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,383 reviews
Check prices

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,383 reviews
KLM
7.8
Good
1,383 reviews
Check prices

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
SWISS
7.5
Good
1,683 reviews
KLM
7.8
Good
1,383 reviews
Check prices

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Brussels Airlines
7.3
Good
350 reviews
KLM
7.8
Good
1,383 reviews
Check prices

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
TAP AIR PORTUGAL
7.1
Good
1,929 reviews
KLM
7.8
Good
1,383 reviews
Check prices

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Iberia
7.0
Good
2,858 reviews
KLM
7.8
Good
1,383 reviews
Check prices

Food

7.3

Crew

8.4

Boarding

7.8

Overall

7.8

Entertainment

7.1

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

  • What are the cheapest airlines flying from London Heathrow Airport to Porto round-trip?

    Flying on TAP AIR PORTUGAL is currently your cheapest option to Porto, with prices starting at C$ 311. Additional round-trip tickets that might be worth considering are offered by Lufthansa and Brussels Airlines, with the lowest prices starting at C$ 347 and C$ 350, respectively. TAP AIR PORTUGAL is priced at 18% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Air Serbia, which is currently one of the cheapest options available, starting at C$ 147. TAP AIR PORTUGAL flights start at C$ 165 while deals on KLM start at C$ 178 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$ 789). 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

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