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Cheap flights from Porto to London from $68

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LON
30 Mar — 6 Apr1
1 adult

Cheap flight deals from Porto to London

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to London (LON). 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 March 2025.

Round-trip from

$83

One-way from

$68

Popular in

July

Cheapest in

February

Average price

$146

Good one-way deal

$307 or less
Ryanair
  • Ryanair
  • 10/5-18/5
  • Nonstop
  • 4h 50m total
  • Porto to London
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Ryanair
  • Ryanair
  • 6/4
  • Nonstop
  • 2h 25m total
  • Porto to London
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Highest demand for flights based on searches. 20% potential increase in price ($90 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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Price to beat on a one-way flight from Porto to London (LON).
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Find flight deals from Porto to London

Cheapest flights from Porto to London
Explore the most affordable flight options available from Porto to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2025.

Sat 10/521:50OPO - STN
Nonstop2h 25mRyanair
Sun 18/506:40STN - OPO
Nonstop2h 25mRyanair
Deal found 25/3$83
Thu 8/521:35OPO - STN
Nonstop2h 24mMultiple Airlines
Sat 17/506:25STN - OPO
Nonstop2h 25mMultiple Airlines
Deal found 25/3$115
Thu 18/906:40OPO - LGW
Nonstop2h 20measyJet
Mon 22/906:10LGW - OPO
Nonstop2h 25measyJet
Deal found 24/3$146
Thu 8/506:40OPO - LGW
Nonstop2h 20mMultiple Airlines
Tue 13/521:45LGW - OPO
1 stop10h 15mMultiple Airlines
Deal found 25/3$157
Thu 8/522:00OPO - LTN
1 stop22h 55mMultiple Airlines
Tue 13/518:10LTN - OPO
1 stop13h 50mMultiple Airlines
Deal found 25/3$186
Wed 1/1009:20OPO - LTN
Nonstop2h 25measyJet
Sun 5/1013:05LTN - OPO
Nonstop2h 25measyJet
Deal found 25/3$208
Fri 16/508:30OPO - SEN
1 stop11h 40measyJet
Mon 19/506:30SEN - OPO
1 stop6h 35measyJet
Deal found 25/3$301
Sat 29/307:05OPO - LGW
Nonstop2h 20mTAP AIR PORTUGAL
Mon 31/321:15LGW - OPO
Nonstop2h 25mTAP AIR PORTUGAL
Deal found 24/3$313
Thu 8/516:00OPO - LHR
1 stop6h 55mMultiple Airlines
Tue 13/520:50LHR - OPO
1 stop11h 10mMultiple Airlines
Deal found 25/3$318
Wed 8/1020:35OPO - LHR
1 stop12h 55mIberia
Tue 14/1010:50LHR - OPO
1 stop9h 05mIberia
Deal found 25/3$325
Thu 8/520:20OPO - LHR
1 stop11h 20mKLM
Mon 12/508:40LHR - OPO
1 stop8h 05mKLM
Deal found 24/3$332
Fri 16/521:10OPO - LGW
Nonstop2h 20mBritish Airways
Mon 19/518:00LGW - OPO
Nonstop2h 20mBritish Airways
Deal found 25/3$344

Cheapflights Fare Finder

Customise your flight search to find flights from Porto to London 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 647,157 searches. Data last updated 25 March 2025.
Use the filters below to find and compare flights from Porto to London that are best for you.

Fly from

Porto

Fly to

London

Route

Depart

Return

Price

PortoLondon

OPO - STN

OPOSTN

Porto

Sat 10/5

21:50-00:15

Nonstop2h 25m

London Stansted

Sun 11/5

06:40-09:05

Nonstop2h 25m

$108

PortoLondon

OPO - STN

OPOSTN

Porto

Thu 8/5

21:35-23:59

Nonstop2h 24m

London Stansted

Sat 17/5

06:25-08:50

Nonstop2h 25m

$115

PortoLondon

OPO - LGW

OPOLGW

Porto

Thu 18/9

06:40-09:00

Nonstop2h 20m

London Gatwick

Mon 22/9

06:10-08:35

Nonstop2h 25m

$146

PortoLondon

OPO - LGW

OPOLGW

Porto

Thu 8/5

06:40-09:00

Nonstop2h 20m

London Gatwick

Tue 13/5

21:45-08:00

1 stop10h 15m

$157

PortoLondon

OPO - LTN

OPOLTN

Porto

Thu 8/5

22:00-20:55

1 stop22h 55m

London Luton

Tue 13/5

18:10-08:00

1 stop13h 50m

$186

PortoLondon

OPO - LTN

OPOLTN

Porto

Fri 16/5

09:05-11:30

Nonstop2h 25m

London Luton

Mon 19/5

07:30-14:20

1 stop6h 50m

$220

PortoLondon

OPO - SEN

OPOSEN

Porto

Fri 16/5

08:30-20:10

1 stop11h 40m

London Southend

Mon 19/5

06:30-13:05

1 stop6h 35m

$301

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 8/5

16:00-22:55

1 stop6h 55m

London Heathrow

Tue 13/5

20:50-08:00

1 stop11h 10m

$318

PortoLondon

OPO - LHR

OPOLHR

Porto

Thu 8/5

20:20-07:40

1 stop11h 20m

London Heathrow

Mon 12/5

08:40-16:45

1 stop8h 05m

$332

PortoLondon

OPO - LGW

OPOLGW

Porto

Fri 16/5

21:10-23:30

Nonstop2h 20m

London Gatwick

Mon 19/5

18:00-20:20

Nonstop2h 20m

$344

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 49 results
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Best time to book a flight from Porto to London

Have a flexible travel schedule? Discover the best time to fly to London from Porto with our price prediction graph.
Estimated return 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 Porto to London

How far ahead should I book a flight from Porto to London?

Use this chart to determine the optimal time to book a return flight from Porto to London. Price data was last updated on 21 March 2025.

The best time to book flights from Porto to London is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Porto to London?

Currently, October is the cheapest month in which you can book a flight from Porto to London (average of $1,037). Flying from Porto to London in December is currently the most expensive (average of $1,667). 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.

What is the cheapest time of day to fly from OPO to LON?

Find hourly flight availability from Porto to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 March 2025.

When flying from Porto to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 25 March 2025.
Get a feel of what it's like to fly with Aegean Airlines, KLM and Austrian Airlines from Porto to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Overall

8.1

Boarding

7.8

Comfort

7.8

Crew

8.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Aegean Airlines
8.1
Very Good
729 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Overall

8.1

Boarding

7.8

Comfort

7.8

Crew

8.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
KLM
7.8
Good
1,318 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Overall

8.1

Boarding

7.8

Comfort

7.8

Crew

8.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Austrian Airlines
7.5
Good
769 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Overall

8.1

Boarding

7.8

Comfort

7.8

Crew

8.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
SWISS
7.5
Good
1,569 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Overall

8.1

Boarding

7.8

Comfort

7.8

Crew

8.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Air France
7.4
Good
1,423 reviews
Aegean Airlines
8.1
Very Good
729 reviews
Check prices

Entertainment

6.9

Overall

8.1

Boarding

7.8

Comfort

7.8

Crew

8.6

Food

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

Related info for your journey

Find useful and relevant information for your journey from Porto to London. 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 from for flights from Porto to London?

    Porto (OPO), located 10.9 km from the city centre, is the airport you fly out of when you book flights from Porto to London. 0 airlines have flights from Porto to London on a regular basis. Booking flights from Porto to London should not be difficult; the airport handles an average of 4 outbound flights to London per day.

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

    Flying on Ryanair is currently your cheapest option to London, with prices starting at $83. Additional round-trip tickets that might be worth considering are offered by easyJet and KLM, with the lowest prices starting at $146 and $332, respectively. You may be able to fly from Porto to London for 63% less than the average price by searching for these airlines.

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

    For one-way options, check prices for Ryanair. According to our data, you can fly for as low as $68. Users have also found prices from $68 and $134 on easyJet and Iberia, respectively.

  • What are the most popular routes from Porto to London?

    The most popular flight routes from Porto to London are Porto - London Luton, Porto - London Gatwick and Porto - London Stansted.

  • Can I find deals for flights from Porto to London that include hotel bookings?

    Yes. In addition to deals on Porto to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Porto to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to London.

  • Can I find deals for business class flights from Porto to London?

    Yes. Cheapflights offers flight deals from Porto to London 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 Porto to London?

    Currently, October is the cheapest month in which you can book a flight from Porto to London (average of $1,037). Flying from Porto to London in December is currently the most expensive (average of $1,667). 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
Gatwick
Hounslow
Southall
Chatham
Dover
Dorking
Canterbury
Andover
Hayes
Horley

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Yes, Cheapflights offers price alerts on Porto to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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