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Cheap flights from London, ON to Porto from C$ 603

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — OPO
26 Aug — 2 Sep1
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 July 2026.

Wed 25/119:15 a.m.
YXU
-
OPO
2 stops45h 00m
Air Canada
Sun 29/116:00 a.m.
OPO
-
YXU
2 stops37h 47m
Air Canada
Deal found 22/7C$ 1,178
Mon 27/76:20 p.m.
YXU
-
OPO
2 stops31h 40m
Air Canada
Wed 26/811:20 a.m.
OPO
-
YXU
2 stops27h 00m
Air Canada
Deal found 26/7C$ 1,182
Sat 17/1010:05 a.m.
YXU
-
OPO
2 stops15h 45m
Air Canada
Sat 24/1011:20 a.m.
OPO
-
YXU
2 stops15h 20m
Air Canada
Deal found 24/7C$ 1,270
Sun 18/106:20 p.m.
YXU
-
OPO
2 stops31h 30m
Lufthansa
Sat 24/1011:20 a.m.
OPO
-
YXU
2 stops15h 20m
Lufthansa
Deal found 24/7C$ 1,278
Tue 28/710:05 a.m.
YXU
-
OPO
2 stops15h 55m
Multiple Airlines
Thu 27/86:20 a.m.
OPO
-
YXU
2 stops20h 20m
Multiple Airlines
Deal found 26/7C$ 1,322
Fri 16/1010:05 a.m.
YXU
-
OPO
2 stops16h 05m
Lufthansa
Sat 24/1011:20 a.m.
OPO
-
YXU
2 stops15h 20m
Lufthansa
Deal found 24/7C$ 1,343
Sun 18/103:30 p.m.
YXU
-
OPO
2 stops14h 45m
Lufthansa
Fri 23/1011:05 a.m.
OPO
-
YXU
2 stops15h 35m
Lufthansa
Deal found 24/7C$ 1,344
Fri 16/1010:05 a.m.
YXU
-
OPO
2 stops16h 05m
Lufthansa
Fri 23/106:20 a.m.
OPO
-
YXU
2 stops16h 25m
Lufthansa
Deal found 24/7C$ 1,350

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 July 2026.

Round-trip from

C$ 1,178

One-way from

C$ 603
Air Canada
  • Air Canada
  • 25/11-29/11
  • 4 total stops
  • 82h 47m total
  • London to Porto
Search Deals
6/9
  • 6/9
  • 2 total stops
  • 16h 05m 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 July 2026.
Use the filters below to find and compare flights from London to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonPorto

YXU - OPO

YXUOPO

London

Wed 25/11

9:15 a.m.-11:15 a.m.

2 stops45h 00m

Porto

Sun 29/11

6:00 a.m.-2:47 p.m.

2 stops37h 47m

C$ 1,178

LondonPorto

YXU - OPO

YXUOPO

London

Sun 18/10

6:20 p.m.-6:50 a.m.

2 stops31h 30m

Porto

Sat 24/10

11:20 a.m.-9:40 p.m.

2 stops15h 20m

C$ 1,278

LondonPorto

YXU - OPO

YXUOPO

London

Fri 16/10

10:05 a.m.-7:10 a.m.

2 stops16h 05m

Porto

Sat 24/10

11:20 a.m.-9:40 p.m.

2 stops15h 20m

C$ 1,343
Quickest round-trip

LondonPorto

YXU - OPO

YXUOPO

London

Sun 18/10

3:30 p.m.-11:15 a.m.

2 stops14h 45m

Porto

Fri 23/10

11:05 a.m.-9:40 p.m.

2 stops15h 35m

C$ 1,344

LondonPorto

YXU - OPO

YXUOPO

London

Sat 17/10

10:05 a.m.-6:50 a.m.

2 stops15h 45m

Porto

Fri 23/10

6:20 a.m.-5:45 p.m.

2 stops16h 25m

C$ 1,350

LondonPorto

YXU - OPO

YXUOPO

London

Fri 16/10

10:05 a.m.-7:10 a.m.

2 stops16h 05m

Porto

Fri 23/10

6:20 a.m.-5:45 p.m.

2 stops16h 25m

C$ 1,350

LondonPorto

YXU - OPO

YXUOPO

London

Sat 17/10

3:30 p.m.-9:45 a.m.

2 stops13h 15m

Porto

Sat 24/10

5:05 a.m.-9:40 p.m.

3 stops21h 35m

C$ 1,768
Cheapest one-way
Quickest one-way

LondonPorto

YXU - OPO

YXUOPO

London

Sun 6/9

2:40 p.m.-11:45 a.m.

2 stops16h 05m

C$ 603

LondonPorto

YXU - OPO

YXUOPO

London

Tue 8/9

5:40 a.m.-8:50 p.m.

3 stops34h 10m

C$ 752

LondonPorto

YXU - OPO

YXUOPO

London

Sun 6/9

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

2 stops34h 50m

C$ 1,205

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/7

Showing 1-10 of 11 resultsSorted by cheapest first
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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.

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 31h 30m. London, Ontario and Porto are separated by a distance of 5779 km. This flight may include one or multiple stops.

  • 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.

See more FAQs

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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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