€15 Find Cheap Flights to the United Kingdom

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ireland to the United Kingdom departing on 3/6. 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

Book Cheap United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to the United Kingdom 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 return flight deals to the United Kingdom

Tue, 16 Jun - Tue, 23 Jun
Ryanair Logo
13:00 - 14:35
SNN
-
LGW
1h 35mdirect
Ryanair Logo
15:05 - 16:40
LGW
-
SNN
1h 35mdirect
€32Ryanair
Fri, 12 Jun - Mon, 15 Jun
Ryanair Logo
17:00 - 18:30
SNN
-
STN
1h 30mdirect
Ryanair Logo
08:15 - 09:45
STN
-
SNN
1h 30mdirect
€32Ryanair
Tue, 2 Jun - Mon, 22 Jun
Ryanair Logo
08:00 - 09:30
SNN
-
STN
1h 30mdirect
Ryanair Logo
08:15 - 09:45
STN
-
SNN
1h 30mdirect
€33Ryanair
Fri, 12 Jun - Mon, 15 Jun
Ryanair Logo
06:30 - 08:00
SNN
-
STN
1h 30mdirect
Ryanair Logo
08:15 - 09:45
STN
-
SNN
1h 30mdirect
€34Ryanair
Thu, 18 Jun - Fri, 31 Jul
Multiple Airlines Logo
22:00 - 23:20
DUB
-
STN
1h 20mdirect
Multiple Airlines Logo
22:50 - 00:10
STN
-
DUB
1h 20mdirect
€42Multiple Airlines
Thu, 20 Aug - Wed, 2 Sep
Multiple Airlines Logo
22:00 - 23:20
DUB
-
STN
1h 20mdirect
Multiple Airlines Logo
20:00 - 21:20
STN
-
DUB
1h 20mdirect
€43Multiple Airlines
Tue, 2 Jun - Mon, 15 Jun
Aer Lingus Logo
17:50 - 19:30
DUB
-
SOU
1h 40mdirect
Aer Lingus Logo
17:20 - 18:55
SOU
-
DUB
1h 35mdirect
€67Aer Lingus
Mon, 1 Jun - Mon, 8 Jun
Aer Lingus Logo
07:00 - 08:40
DUB
-
SOU
1h 40mdirect
Aer Lingus Logo
17:20 - 18:55
SOU
-
DUB
1h 35mdirect
€73Aer Lingus
Tue, 23 Jun - Thu, 25 Jun
British Airways Logo
20:25 - 21:40
DUB
-
LHR
1h 15mdirect
British Airways Logo
06:20 - 07:45
LHR
-
DUB
1h 25mdirect
€86British Airways
Fri, 3 Jul - Tue, 7 Jul
British Airways Logo
08:35 - 10:10
DUB
-
LHR
1h 35mdirect
British Airways Logo
18:10 - 19:35
LHR
-
DUB
1h 25mdirect
€92British Airways
Booking Insights

KAYAK's insights & trends for flights to the United Kingdom

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

What is the cheapest flight to the United Kingdom?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to the United Kingdom from Ireland found in the last 72 hours was to Birmingham, at €33 return. The most popular route is Dublin (DUB) to London Gatwick Airport (LGW) and the cheapest return airline ticket found on this route in the last 72 hours was €37.

How much is a flight to the United Kingdom?

The average and cheapest price for all round-trip flights to the United Kingdom from each origin found by users searching on KAYAK in the last month.

A flight to the United Kingdom costs €152 on average. The cheapest price found on KAYAK in the last 2 weeks was €17 for the route Dublin (DUB) to Birmingham (BHX). The most popular routes on KAYAK are Shannon to London which costs €411 on average, and Cork to London, which costs €396 on average.

See prices from:

What is the cheapest month to fly from Ireland to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ireland to the United Kingdom is February, when tickets cost €58 (return) on average. On the other hand, the most expensive months are November and July, when the average cost of round-trip tickets is €117 and €104 respectively.

What is the cheapest time of day to fly to the United Kingdom?

The average price for all round-trip flights from Ireland to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally at night, when retur flights cost €188 on average. Morning departures are around 54% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the evening, which is peak travel time and where the average cost of a ticket is €741.

How far in advance should I book a flight from Ireland to the United Kingdom?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Ireland to the United Kingdom, you should book around 6 weeks before departure, which saves you about 37% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Which is the cheapest airport to fly into in the United Kingdom?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United Kingdom is London Luton Airport (LTN), with an average flight price of €40.

Good to know

Low seasonJanuary
Cheapest flight€15
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (17% more expensive on average)
Flight from Shannon to London Stansted Airport

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Ireland to the United Kingdom?

    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 Ireland to the United Kingdom.

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Ireland to the United Kingdom 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 Ireland to the United Kingdom?

    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 Ireland to the United Kingdom up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to the United Kingdom?

    Based on KAYAK data, the cheapest day to fly to the United Kingdom is Friday when return tickets can be as cheap as €326. On the other hand, the most expensive day to fly is Wednesday, when return prices are €526 on average.

Top tips for finding cheap flights to the United Kingdom

  • Looking for cheap airfare to the United Kingdom? 25% of our users found return tickets to the United Kingdom for the following prices or less: From Milltown (Kerry) €38, from Knock €81, from Dublin €125
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest United Kingdom flight deals.

Reviews of the top 4 airlines flying to the United Kingdom

 
Need help choosing which airline to fly with from Ireland to the United Kingdom? 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.
7.3
Aer LingusOverall score based on 1551 reviews
7.4Boarding
8.1Crew
6.6Food
7.2Comfort
7.0Entertainment
Airline reviews

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

10.0 ExcellentAnthon, Apr 2026
DUB - BOS
Read more Aer Lingus reviews

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

On time, only a little turbulence, very competent and caring attendants. Clear information.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

On a four hour delayed flight now on seats back end of the plane instead front-

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Economy seats a bit small but other than that it was all good.

Checked in ok for 3 flights at the airport check-in desk, but apparently I was not checked in to my connecting flights even though I was assured that I was and had seats on all 3 flights. Aer Lingus departure was also delayed for 1.5 hours which gave no time to collect bags to go through customs.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

Boarding was terrible. We were all cooped up in a small, claustrophobic space awaiting to be let out to walk to the plane. Very cramped and very uncomfortable.

Although our departure (DUB) was slightly delayed we reached our destination (LBA) ahead of schedule. The price was very competitive too (around €100 return). Plus, the departure times for both legs were very good: 13:05 and 15:10, respectively. I gave a neutral rating for Food and Entertainment because I didn't avail of either.

Dislike standing for 30 minutes waiting to board. Coffee disgusting, hot sandwich almost inedible. Staff cheerful. Flight early.

Just pushing back from gate now. Boarded into fourth aircraft with 13 hour delay to scheduled departure. Crappy experience.

Notified as to why there’s a delay with our flight.

Easy short trip from Faro to Cardiff. Exceptional staff. Early landing and straight through airport in 15 minutes from touch down.

Food and entertainment were not available, so my rating on those items isn't actually correct. There should be a "Not relevant" or "Didn't use it" option.

Delay in boarding with no explanation why. Stood for about 40 mins waiting to board

Rubbish moved my seat don’t know why same seat configuration cost me extra so me and my wife could sit together now I know why no paper ticket so they can do this

Slow and delayed boarding, including standing outside 15m in -3 temperatures, Late take-off approx 45 mins Very slow bag delivery approx 45 min - no explanation

No problems except for a completely full flight. But we were add one because of a previous delayed flight.

Flight was good but temp in the cabin was cold.

Service onboard is one of the best nowadays, on top of the regular meals they offer more drinks during the whole flight and crew is super nice and helpful. I truly enjoy to fly in BA.

I like American Airlines and their safety record. They provide quality service and a feel safe enough to prefer American Airlines over other carriers even if I have to pay a little more.

Our part of four was delayed both ways between San Diego and Pisa causing our family to be split up with three of us stuck in London overnight No compensation or upgrades were offed and we missed work as a result Food very poor and we declined two of the four meals offered I will affirmatively avoid flying British Airways from here on out

Cancelled flight and re booked seats were a downgrade. British Airways said the upgrade was t available but when I checked it was but then they wouldn’t make it right

The crew was exceptionally good. Came around with snacks and drinks multiple times during the flight. I asked for hot water and they remembered. Responded to call light promptly. Very pleasant. The aircraft was also kept very clean. Boarding was organized. Overall was a great experience.

The boarding was a mess as there was another document check in the small congested area after the stairs at the gate. No food is offered for Economy travelers except for a cookie and a small water bottle. No entertainment is available since it’s a short flight. But at least the seat reclined as opposed to my flight to Faro.

Flight attendants need to come by a little more often to pick up trash.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

The flight was delayed by a bird strike. We were held in boarding area with no toilet facilities.

Very late to leave, poor communication on expected departure time and when boarding actually started.

Everything was perfectly fine, it’s exactly what you would hope for from a budget airline. You get what it says on the tin, what more could you ask for?

Cheap flight but I didn't like the almost one hour delay because of paperwork!!!!

Gate is far at Leeds Bradford Airport. However, as the flight was less than half full, it was calm and not stressful. Great take off and landing. Friendly staff

Boarding was started early and we were lined up in. A glass tunnel on the tarmac we were left standing there for an hour with no information the flight left and arrived 30 mins late

It was great. We arrived a few minutes late but the crew were concert and kind about it. It was a nice smooth fly thanks be to Jesus. I prayed for smooth flight and Yahuwah answered my prayer.

Need more check in desks at Marrakech. Even if you are travelling with hand luggage only, you still need to 'check in' to get the old style boarding pass. Unfortunately they haven't thought to separate out the people checking in luggage to a separate desk. Flight was delayed leaving but arrived on time. Limited food options on board and very overpriced.

We bought tickets for £30 from kayak but we paid £55 for check in to rayan , they slaught us

Flight was delayed so long we missed our second flight. Entire trip had to be cancelled. Ryanair refused to help us.

Everything you need to know for your flight to the United Kingdom

Cabin class types available on flights to the United Kingdom

Cabin classes available on flights to the United Kingdom. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.