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Cheap flights from London, ON to Porto from C$ 1,080

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — OPO
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Porto

Enter your travel dates to find the best prices.

Cheapest flights from London to Porto
Explore the most affordable flight options available from London to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Sun 8/29:25 a.m.
YXU
-
OPO
2 stops24h 50m
Air Canada
Thu 12/26:00 a.m.
OPO
-
YXU
2 stops31h 46m
Air Canada
Deal found 25/1C$ 1,080

Find flight deals from London to Porto

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) 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$ 1,041
Air Canada
  • Air Canada
  • 1/4-11/4
  • 4 total stops
  • 40h 28m total
  • London to Porto
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London 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 to Porto that are best for you.

Fly from

London

Fly to

Porto

Route

Depart

Return

Price

LondonPorto

YXU - OPO

YXUOPO

London

Sun 8/2

9:25 a.m.-3:15 p.m.

2 stops24h 50m

Porto

Thu 12/2

6:00 a.m.-8:46 a.m.

2 stops31h 46m

C$ 1,080

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/1

Best time to book a flight from London to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from London 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 to Porto

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

Currently, October is the cheapest month in which you can book a flight from London, Ontario to Porto (average of C$ 453). Flying from London, Ontario to Porto in July is currently the most expensive (average of C$ 868). 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 London to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London, Ontario to Porto?

    Departing from London, Ontario to Porto will take you 24h 50m. London, Ontario and Porto are separated by a distance of 5779 km.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from London, Ontario to Porto (average of C$ 453). Flying from London, Ontario to Porto in July is currently the most expensive (average of C$ 868). 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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Fly with Cheapflights

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How does Cheapflights help users find flights from London to Porto?

Cheapflights helps you search for flights from London to Porto via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from London to Porto?

Cheapflights simply makes it quick and affordable to book flights from London to Porto by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to Porto with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Porto, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from London to Porto become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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