C$ 658 Find Cheap Flights from London to Ireland

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 Ireland departing on 19/4. 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 Ireland Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stopC$ 813
Shannon
Shannon2 stopsC$ 1,184
Dublin
Dublin1 stopC$ 813
Shannon
Shannon2 stopsC$ 1,184

Cheap Flights from London to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from London to Ireland 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 Ireland

Wed, 15 Apr - Wed, 22 Apr
Air Canada Logo
9:25 a.m. - 8:15 a.m.
YXU
-
DUB
17h 50m
1 stop
Air Canada Logo
9:50 a.m. - 9:19 p.m.
DUB
-
YXU
16h 29m
1 stop
C$ 813Air Canada
Mon, 20 Apr - Mon, 27 Apr
Air Canada Logo
5:40 p.m. - 8:15 a.m.
YXU
-
DUB
9h 35m
1 stop
Air Canada Logo
9:50 a.m. - 5:04 p.m.
DUB
-
YXU
12h 14m
1 stop
C$ 836Air Canada
Thu, 9 Apr - Mon, 13 Apr
Air Canada Logo
9:25 a.m. - 7:20 a.m.
YXU
-
DUB
16h 55m
2 stops
Air Canada Logo
9:50 a.m. - 5:04 p.m.
DUB
-
YXU
12h 14m
1 stop
C$ 854Air Canada
Wed, 20 May - Sun, 24 May
Air Canada Logo
6:10 p.m. - 8:15 a.m.
YXU
-
DUB
9h 05m
1 stop
Air Canada Logo
9:30 a.m. - 9:38 p.m.
DUB
-
YXU
17h 08m
2 stops
C$ 855Air Canada
Wed, 20 May - Sun, 24 May
Air Canada Logo
9:30 a.m. - 7:45 a.m.
YXU
-
DUB
17h 15m
2 stops
Air Canada Logo
1:35 p.m. - 11:43 a.m.
DUB
-
YXU
27h 08m
2 stops
C$ 858Air Canada
Wed, 15 Apr - Wed, 22 Apr
Multiple Airlines Logo
5:10 a.m. - 8:15 a.m.
YXU
-
DUB
22h 05m
1 stop
Multiple Airlines Logo
8:50 a.m. - 8:44 a.m.
DUB
-
YXU
28h 54m
2 stops
C$ 859Multiple Airlines
Fri, 17 Apr - Fri, 24 Apr
Air Canada Logo
5:40 p.m. - 8:15 a.m.
YXU
-
DUB
9h 35m
1 stop
Air Canada Logo
9:50 a.m. - 5:04 p.m.
DUB
-
YXU
12h 14m
1 stop
C$ 877Air Canada
Thu, 16 Apr - Thu, 23 Apr
Air Canada Logo
9:25 a.m. - 7:20 a.m.
YXU
-
DUB
16h 55m
2 stops
Air Canada Logo
9:50 a.m. - 5:04 p.m.
DUB
-
YXU
12h 14m
1 stop
C$ 878Air Canada
Thu, 16 Apr - Thu, 23 Apr
Air Canada Logo
5:40 p.m. - 8:15 a.m.
YXU
-
DUB
9h 35m
1 stop
Air Canada Logo
9:50 a.m. - 5:04 p.m.
DUB
-
YXU
12h 14m
1 stop
C$ 880Air Canada
Fri, 29 May - Tue, 2 Jun
United Airlines Logo
9:30 a.m. - 10:15 a.m.
YXU
-
SNN
19h 45m
2 stops
United Airlines Logo
12:30 p.m. - 9:38 p.m.
SNN
-
YXU
14h 08m
2 stops
C$ 1,197United Airlines
Booking Insights

KAYAK's insights & trends for London to Ireland flights

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

Which airlines provide the cheapest flights from London to Ireland?

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 Ireland were found on Air Canada (C$ 836) and United Airlines (C$ 1,197).

Find deals

Good to know

Low seasonNovember
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (5% more expensive on average)

FAQs - booking Ireland flights

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

    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 Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to Ireland 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 Ireland?

    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 Ireland 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 Ireland?

    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 Ireland 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 Ireland

 
Need help choosing which airline to fly with from London to Ireland? 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 10777 reviews
7.3Boarding
7.1Comfort
7.8Crew
6.3Food
6.8Entertainment
Airline reviews

It was very cold in the beginning; then I asked stewardess to do something about that, and she did something, so for the rest of the flight the temperature was closer to normal. It is typical: by some reason the pilots or whoever is in charge make the cod in the cabin unbearable. The seat is better than on WestJet or Flair, but is is very tight. No leg room.

6.0 GoodAnonymous, Feb 2026
YYZ - YEG
Read more Air Canada reviews

It was very cold in the beginning; then I asked stewardess to do something about that, and she did something, so for the rest of the flight the temperature was closer to normal. It is typical: by some reason the pilots or whoever is in charge make the cod in the cabin unbearable. The seat is better than on WestJet or Flair, but is is very tight. No leg room.

Delayed for 15 min due to maintenance. We were asked to wait to board as a family, but took longer than if we were not asked anything.

Had to cancel the flight because there was a 14 hour layover before the flight. Unacceptable.

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.

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

Information on your arrival and departure airports

London (YXU)