C$ 639 Find Cheap Flights from London to Ireland – Compare and Save

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 10/9. 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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Best Ireland Flight Deals from London

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stopC$ 864
Shannon
Shannon2 stopsC$ 1,251
Dublin
Dublin1 stopC$ 864
Shannon
Shannon2 stopsC$ 1,251

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

Sat, 3 Oct - Wed, 7 Oct
Air Canada Logo
6:20 p.m. - 8:15 a.m.
YXU
-
DUB
8h 55m
1 stop
Air Canada Logo
9:20 a.m. - 5:45 p.m.
DUB
-
YXU
13h 25m
1 stop
C$ 864Air Canada
Wed, 16 Sep - Wed, 23 Sep
Multiple Airlines Logo
5:40 a.m. - 8:15 a.m.
YXU
-
DUB
21h 35m
1 stop
Multiple Airlines Logo
6:35 p.m. - 5:43 p.m.
DUB
-
YXU
28h 08m
2 stops
C$ 898Multiple Airlines
Fri, 2 Oct - Tue, 6 Oct
Air Canada Logo
3:30 p.m. - 10:40 a.m.
YXU
-
DUB
14h 10m
2 stops
Air Canada Logo
9:50 a.m. - 5:45 p.m.
DUB
-
YXU
12h 55m
1 stop
C$ 901Air Canada
Wed, 16 Sep - Wed, 23 Sep
Multiple Airlines Logo
10:05 a.m. - 7:45 a.m.
YXU
-
DUB
16h 40m
2 stops
Multiple Airlines Logo
6:35 p.m. - 5:43 p.m.
DUB
-
YXU
28h 08m
2 stops
C$ 902Multiple Airlines
Sat, 3 Oct - Wed, 7 Oct
Air Canada Logo
10:05 a.m. - 10:40 a.m.
YXU
-
DUB
19h 35m
2 stops
Air Canada Logo
9:20 a.m. - 9:20 a.m.
DUB
-
YXU
29h 00m
1 stop
C$ 904Air Canada
Fri, 2 Oct - Tue, 6 Oct
Air Canada Logo
3:30 p.m. - 10:40 a.m.
YXU
-
DUB
14h 10m
2 stops
Air Canada Logo
9:50 a.m. - 5:45 p.m.
DUB
-
YXU
12h 55m
1 stop
C$ 904Air Canada
Sat, 3 Oct - Wed, 7 Oct
Air Canada Logo
10:05 a.m. - 11:10 a.m.
YXU
-
DUB
20h 05m
2 stops
Air Canada Logo
9:20 a.m. - 2:55 p.m.
DUB
-
YXU
10h 35m
1 stop
C$ 905Air Canada
Wed, 2 Sep - Tue, 8 Sep
Air Canada Logo
10:05 a.m. - 7:20 a.m.
YXU
-
DUB
16h 15m
2 stops
Air Canada Logo
9:50 a.m. - 9:40 p.m.
DUB
-
YXU
16h 50m
1 stop
C$ 911Air Canada
Wed, 2 Sep - Tue, 8 Sep
Air Canada Logo
10:05 a.m. - 7:20 a.m.
YXU
-
DUB
16h 15m
2 stops
Air Canada Logo
9:20 a.m. - 9:40 p.m.
DUB
-
YXU
17h 20m
2 stops
C$ 915Air Canada
Sat, 5 Sep - Tue, 13 Oct
United Airlines Logo
5:40 a.m. - 10:40 a.m.
YXU
-
DUB
24h 00m
2 stops
United Airlines Logo
8:50 a.m. - 5:45 p.m.
DUB
-
YXU
13h 55m
2 stops
C$ 950United 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 5 days.

In the past 5 days, the cheapest round-trip tickets from London to Ireland were found on Air Canada (C$ 864) and United Airlines (C$ 1,388).

Find deals

Good to know

Cheapest flight

C$ 639
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 11420 reviews
7.8Crew
7.3Boarding
6.8Entertainment
6.3Food
7.1Comfort
Airline reviews

Kept me waiting for hours with the excuse of aircraft needed to cool down and then cancelled.

2.0 MediocreAnonymous, Jul 2026
YTZ - YUL
Read more Air Canada reviews

Kept me waiting for hours with the excuse of aircraft needed to cool down and then cancelled.

Flight attendants had an attitude with everyone, not sure they should be working with customer service if they cannot show a pleasant attitude. Underwhelming, to say the least. The food was awful, and nothing could be purchased from Toronto to Tokyo. Do better, Air Canada.

Boarding and times were all good. Food was as expected and enough. Comfort for a 6’ tall male 200 lbs (somewhat average sized) was terrible. It was just SO much more money to upgrade to premium economy. It’s a 777 so seating is 3-4-3 and is really crammed. What are you going to do? The only real downside is not being able to sleep so your first day in Europe is a write off. I suppose if you need that first day then pay the extra $500 to get premium economy and maybe you can sleep and wake up with some energy?

No charger and no entertainment on the way back. The plane's super old-like 80s old-with zero TVs. At least the free Wi-Fi works, so definitely bring your iPad. Also, no meal on this 7-hour flight.

Too many delays. Seats too small. A budget airline. Will never fly Air Canada again.

Horrible, we were on a little DeHaviland 400 that was really small and shaky. I am 5' 4" and I had to duck my head to get in it felt like an old war plane.

Very good except paying twice for seat selection. Once when I booked and again when I checked in.

It might have been closer to being on time. Maybe next time I could fly from London to Toronto?

We did not have seat assigned until almost the very end of boarding and my husband and I did not sit together I don’t know why even though we bought tickets 3 months in advance and checked in very early. We were not standby and we were treated as we had stand by tickets. I will never fly Air Canada again.

Air Canada canceled my flight last minute and I gave me next’s day night time my flight. No accommodations at all. I have a function on Xmas eve. So I had to took rental car last minute.i never ever book a ticket with Canadian airlines at all.

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

Information on your arrival and departure airports

London (YXU)