C$ 688 Find Cheap Flights from London to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Portugal departing on 17/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Best Portugal Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stopC$ 929
Porto
Porto2 stopsC$ 1,525
Faro
Faro2 stopsC$ 1,325
Lisbon
Lisbon1 stopC$ 929
Porto
Porto2 stopsC$ 1,525
Faro
Faro2 stopsC$ 1,325

Cheap Flights from London to Portugal

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from London to Portugal

Mon, 4 May - Mon, 11 May
Air Canada Logo
6:00 a.m. - 11:00 a.m.
YXU
-
LIS
24h 00m
1 stop
Air Canada Logo
1:00 p.m. - 11:43 a.m.
LIS
-
YXU
27h 43m
1 stop
C$ 929Air Canada
Mon, 4 May - Fri, 8 May
Air Canada Logo
6:00 a.m. - 11:00 a.m.
YXU
-
LIS
24h 00m
1 stop
Air Canada Logo
1:00 p.m. - 11:43 a.m.
LIS
-
YXU
27h 43m
1 stop
C$ 939Air Canada
Mon, 4 May - Fri, 8 May
Air Canada Logo
6:10 p.m. - 11:00 a.m.
YXU
-
LIS
11h 50m
1 stop
Air Canada Logo
11:25 a.m. - 5:33 p.m.
LIS
-
YXU
35h 08m
2 stops
C$ 944Air Canada
Sun, 3 May - Thu, 14 May
Air Canada Logo
6:00 a.m. - 8:20 a.m.
YXU
-
LIS
21h 20m
2 stops
Air Canada Logo
1:00 p.m. - 11:43 a.m.
LIS
-
YXU
27h 43m
1 stop
C$ 968Air Canada
Tue, 28 Apr - Wed, 13 May
Air Canada Logo
5:10 a.m. - 9:20 a.m.
YXU
-
LIS
23h 10m
2 stops
Air Canada Logo
1:00 p.m. - 11:43 a.m.
LIS
-
YXU
27h 43m
1 stop
C$ 978Air Canada
Sun, 3 May - Fri, 8 May
Air Canada Logo
6:00 a.m. - 10:30 a.m.
YXU
-
LIS
23h 30m
2 stops
Air Canada Logo
11:25 a.m. - 11:43 a.m.
LIS
-
YXU
29h 18m
2 stops
C$ 982Air Canada
Sun, 3 May - Tue, 12 May
United Airlines Logo
6:00 a.m. - 10:30 a.m.
YXU
-
LIS
23h 30m
2 stops
United Airlines Logo
12:20 p.m. - 5:33 p.m.
LIS
-
YXU
34h 13m
2 stops
C$ 999United Airlines
Thu, 21 May - Mon, 25 May
United Airlines Logo
9:30 a.m. - 6:55 a.m.
YXU
-
OPO
16h 25m
2 stops
United Airlines Logo
9:00 a.m. - 11:43 a.m.
OPO
-
YXU
31h 43m
2 stops
C$ 1,525United Airlines
Thu, 21 May - Mon, 25 May
United Airlines Logo
9:30 a.m. - 6:55 a.m.
YXU
-
OPO
16h 25m
2 stops
United Airlines Logo
9:00 a.m. - 8:53 a.m.
OPO
-
YXU
28h 53m
2 stops
C$ 1,533United Airlines
Fri, 5 Jun - Sat, 13 Jun
WestJet Logo
2:35 p.m. - 11:40 a.m.
YXU
-
FAO
16h 05m
2 stops
WestJet Logo
1:25 p.m. - 1:45 p.m.
FAO
-
YXU
29h 20m
2 stops
C$ 1,992WestJet
Booking Insights

KAYAK's insights & trends for London to Portugal flights

Get data-powered insights and trends into flights from London to Portugal to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from London to Portugal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from London to Portugal were found on Air Canada (C$ 968) and United Airlines (C$ 999).

Find deals

Good to know

Low seasonFebruary
Cheapest flightC$ 688
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from London to Faro

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from London to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to Portugal is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from London to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from London to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from London to Portugal

 
Need help choosing which airline to fly with from London to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 10673 reviews
7.8Crew
6.8Entertainment
6.3Food
7.1Comfort
7.3Boarding
Airline reviews

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

2.0 MediocreFola, Feb 2026
YYZ - PHL
Read more Air Canada reviews

Terrible…. Reported missing luggage’s with injectable meds that needed refrigeration. Yet, delivery could not be expedited. Luggage’s were delivered 5 days after arrival. The meds were useless as ice pack had melted. So disappointed!!!

Terrible, luggage’s with b/p and diabetes meds including insulin and ozempic. I’ve in them had dissolved and rendered useless

It was a very small plane and was ok. No food or entertainment so there should be an option for NA.

I travelled in Business class for the first time and wish I could do that again.

The crew from Toronto Santiago (and the other way) weren't nice people. They seemed angry. Other flights with Air Canada had much nicer crews. Bathrooms always had sticky floors. Yuck!

No entertainment system. Paid extra for wider seats but not worth the cost. Flight left a little late and arrived early.

We boarded and then deboarded the plane after being told it needed something done that couldn't be fixed. Sent notice about 3h flight delay, then they clawed it back and we were 1h delayed. Very poor communication.

Was notified on a timely manner of any changes, if any, of the flight schedules.

My seat was covered in vomit and I will be reaching out to Air Canada

We were happy with the service and cost of checking a bag

Everything you need to know for your flight from London to Portugal

Information on your arrival and departure airports

London (YXU)