C$ 665 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 10/2. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ireland

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
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$ 744
Shannon
Shannon2 stopsC$ 1,339
Dublin
Dublin1 stopC$ 744
Shannon
Shannon2 stopsC$ 1,339

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

Thu, 5 Mar - Mon, 9 Mar
Air Canada Logo
9:40 a.m. - 7:10 a.m.
YXU
-
DUB
16h 30m
1 stop
Air Canada Logo
8:00 a.m. - 5:05 p.m.
DUB
-
YXU
13h 05m
1 stop
C$ 744Air Canada
Thu, 5 Mar - Mon, 9 Mar
Air Canada Logo
5:10 a.m. - 7:10 a.m.
YXU
-
DUB
21h 00m
1 stop
Air Canada Logo
8:00 a.m. - 5:05 p.m.
DUB
-
YXU
13h 05m
1 stop
C$ 750Air Canada
Tue, 14 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. - 5:03 p.m.
DUB
-
YXU
12h 13m
1 stop
C$ 761Air Canada
Thu, 5 Mar - Mon, 9 Mar
Air Canada Logo
5:10 a.m. - 8:10 a.m.
YXU
-
DUB
22h 00m
2 stops
Air Canada Logo
8:00 a.m. - 8:46 a.m.
DUB
-
YXU
28h 46m
1 stop
C$ 783Air Canada
Thu, 5 Mar - Mon, 9 Mar
Air Canada Logo
9:40 a.m. - 10:20 a.m.
YXU
-
DUB
19h 40m
2 stops
Air Canada Logo
8:00 a.m. - 8:46 a.m.
DUB
-
YXU
28h 46m
1 stop
C$ 788Air Canada
Fri, 17 Apr - Fri, 24 Apr
Lufthansa Logo
9:25 a.m. - 4:55 p.m.
YXU
-
DUB
26h 30m
2 stops
Lufthansa Logo
9:50 a.m. - 5:03 p.m.
DUB
-
YXU
12h 13m
1 stop
C$ 794Lufthansa
Sat, 18 Apr - Fri, 24 Apr
Air Canada Logo
5:40 p.m. - 10:40 a.m.
YXU
-
DUB
12h 00m
2 stops
Air Canada Logo
9:50 a.m. - 9:18 p.m.
DUB
-
YXU
16h 28m
1 stop
C$ 799Air Canada
Thu, 5 Mar - Mon, 9 Mar
Air Canada Logo
5:40 p.m. - 7:10 a.m.
YXU
-
DUB
8h 30m
1 stop
Air Canada Logo
9:30 a.m. - 9:21 p.m.
DUB
-
YXU
15h 51m
2 stops
C$ 804Air Canada
Thu, 16 Apr - Sat, 25 Apr
Air Canada Logo
5:40 p.m. - 8:15 a.m.
YXU
-
DUB
9h 35m
1 stop
Air Canada Logo
8:50 a.m. - 9:18 p.m.
DUB
-
YXU
17h 28m
2 stops
C$ 815Air Canada
Fri, 17 Apr - Thu, 23 Apr
Multiple Airlines Logo
5:40 p.m. - 10:40 a.m.
YXU
-
DUB
12h 00m
2 stops
Multiple Airlines Logo
8:40 a.m. - 9:18 p.m.
DUB
-
YXU
17h 38m
2 stops
C$ 828Multiple 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.

How long does a flight from London to Ireland take?

The duration of a flight to Ireland depends on your arrival airport. The shortest routes to Ireland from London are to Dublin, which takes 11h 45m, and Shannon, which takes 44h 50m.

Find deals

Good to know

Low seasonNovember
Cheapest flightC$ 634
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly and prices are also 4% lower on average.
Flight from London to Dublin

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 10688 reviews
6.3Food
7.3Boarding
7.1Comfort
7.8Crew
6.8Entertainment
Airline reviews

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

2.0 MediocreAnonymous, Feb 2026
YYZ - YXU
Read more Air Canada reviews

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.

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

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

Information on your arrival and departure airports

London (YXU)