£421 Find Cheap Flights from Ireland to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Sydney departing on 16/4. 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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These are the airlines KAYAK users have selected most often from within our search results for flights to Sydney
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Cheap Flights from Ireland to Sydney

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Ireland to Sydney 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 from Ireland to Sydney

Thu, 14 May - Thu, 4 Jun
Multiple Airlines Logo
05:45 - 06:05
DUB
-
SYD
39h 20m
3 stops
Multiple Airlines Logo
21:05 - 16:00
SYD
-
DUB
27h 55m
2 stops
£859Multiple Airlines
Thu, 30 Apr - Thu, 7 May
Turkish Airlines Logo
05:45 - 19:10
DUB
-
SYD
28h 25m
2 stops
Turkish Airlines Logo
21:05 - 16:00
SYD
-
DUB
27h 55m
2 stops
£860Turkish Airlines
Thu, 7 May - Thu, 4 Jun
Multiple Airlines Logo
05:45 - 06:05
DUB
-
SYD
39h 20m
3 stops
Multiple Airlines Logo
21:05 - 09:35
SYD
-
DUB
45h 30m
2 stops
£860Multiple Airlines
Thu, 7 May - Thu, 4 Jun
Multiple Airlines Logo
05:45 - 06:05
DUB
-
SYD
39h 20m
3 stops
Multiple Airlines Logo
21:05 - 09:35
SYD
-
DUB
45h 30m
2 stops
£864Multiple Airlines
Tue, 28 Apr - Tue, 5 May
Etihad Airways Logo
20:35 - 16:50
DUB
-
SYD
35h 15m
1 stop
Etihad Airways Logo
20:50 - 07:15
SYD
-
DUB
43h 25m
1 stop
£866Etihad Airways
Thu, 14 May - Thu, 4 Jun
Multiple Airlines Logo
05:45 - 06:05
DUB
-
SYD
39h 20m
3 stops
Multiple Airlines Logo
07:05 - 09:35
SYD
-
DUB
35h 30m
3 stops
£868Multiple Airlines
Fri, 1 May - Wed, 10 Jun
Etihad Airways Logo
09:00 - 06:10
DUB
-
SYD
36h 10m
1 stop
Etihad Airways Logo
15:40 - 19:05
SYD
-
DUB
36h 25m
1 stop
£869Etihad Airways
Thu, 7 May - Thu, 4 Jun
Multiple Airlines Logo
05:45 - 06:05
DUB
-
SYD
39h 20m
3 stops
Multiple Airlines Logo
07:05 - 09:35
SYD
-
DUB
35h 30m
3 stops
£869Multiple Airlines
Sun, 10 May - Tue, 19 May
Turkish Airlines Logo
17:05 - 19:10
DUB
-
SYD
41h 05m
2 stops
Turkish Airlines Logo
21:05 - 23:05
SYD
-
DUB
35h 00m
2 stops
£870Turkish Airlines
Thu, 14 May - Thu, 4 Jun
Multiple Airlines Logo
05:45 - 06:05
DUB
-
SYD
39h 20m
3 stops
Multiple Airlines Logo
07:05 - 09:35
SYD
-
DUB
35h 30m
3 stops
£872Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to Sydney

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

What is the cheapest flight to Sydney?

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

In the last 3 days, the cheapest flight deal to Sydney was found on the route from Dublin, at £859 return. The most popular connection is from London to Sydney and KAYAK users have found return deals for as low as £723 in the last 3 days.

What is the cheapest month to fly to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Sydney, 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 to Sydney is May, where tickets cost £972 on average for return flights. On the other hand, the most expensive months are July and December, where the average cost of tickets from Ireland is £1,457 and £1,450 respectively. For one-way flights, the best month to travel is May with an average price of £972.

How far in advance should I book a flight to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Sydney, 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, you should book around 5 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know - Cheap tickets from Ireland to Sydney

Low seasonMay
Cheapest flight£421
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (34% more expensive on average)
Flight from Dublin to Sydney

FAQs - booking Sydney flights

  • What is the cheapest flight to Sydney?

    In the last 3 days, the cheapest flight deal to Sydney was found on the route from Dublin, at £859 return. The most popular connection is from London to Sydney and KAYAK users have found return deals for as low as £723 in the last 3 days.

  • How far is Sydney Kingsford Smith Airport from central Sydney?

    You’ll need to travel 5 miles to reach the Sydney city centre from Sydney Kingsford Smith Airport.

  • What is the name of Sydney’s airport?

    When flying to Sydney, you'll arrive at Sydney Kingsford Smith Airport (SYD). The airport is also known as Kingsford Smith or Sydney.

  • How does KAYAK find such low prices on flights to Sydney?

    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 to Sydney.

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

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

  • What is the Hacker Fare option on flights to Sydney?

    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 to Sydney 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 to Sydney?

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

Top tips for finding cheap flights to Sydney

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Sydney flight deals.

Reviews of the top 5 airlines flying from Ireland to Sydney

 
See real verified KAYAK customer reviews for airlines flying to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Sydney. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Sydney? 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.
8.1
EmiratesOverall score based on 3543 reviews
8.0Comfort
7.9Food
8.2Entertainment
8.1Boarding
8.3Crew
Airline reviews

Seat did not recline at all, wi-FI did not work at all. Those are both very unfortunate for a 14 hour flight. Crew and food was of course very nice as always.

4.0 OkayMarcia, Feb 2026
HYD - DXB
Read more Emirates reviews

Seat did not recline at all, wi-FI did not work at all. Those are both very unfortunate for a 14 hour flight. Crew and food was of course very nice as always.

The crew were absolutely fantastic. They actively asked if passengers wanted refills and if they were comfortable. I was extremely impressed.

Both flights to and back from Lyon with buses taking extra time and delaying flight at DXB. Food serving needed work.

I liked everything: the service, the food, the cleanness. I flew last year with Qatar Airways, so I can compare. Emirates did much better! Especially their meals and service.

Emirates A380s are always wonderful to fly on. Their crews, food and service are always excellent. They are typically on time and the only thing I would change (maybe newer or upgraded aircraft have this) is bluetooth so I can pair my noise cancelling headphones without a cable.

Premium economy was worth it-comfort was definitely better than economy class. The seats were more comfortable, blankets and pillows thicker

Great flight - Clubhouse met our needs, and the staff provided good service. Boarding felt a little chaotic, but given the size of the aircraft, it's always going to be challenging. Whilst the crew were friendly, the number of passengers meant that we received our breakfast items, but had finished breakfast before we were served a drink. Lunch was much better organised, and throughout the flight, the crew were attentive. Found the seats and ICE to be excellent. Disembarkation was fine, and everything possible to expedite the process was being done.

Bathrooms were amazing and first class seat was very comfortable. Food was edible but not up to the standards of other first class meals on other airlines. But Caviar was amazing! So much caviar. Dom Perignon 2015 was room temperature. It would have been amazing if it was chilled down a bit more. Slippers were amazing and amenity kit requested was beautiful. Requested Pajamas never came so can’t tell you how nice they were. Loved the design of the seat and personal storage. Suite was much smaller than other airline’s first class and tv screen was tiny and remote difficult to use. I probably wouldn’t pay for this flight again.

It was delayed for 2 hrs. Flight attendants were not attentive.

Wonderful Premium Economy experience. Felt as good as Business Class for food and entertainment. Comfortable sleeping too

Amazing airline accommodations. The cabins were so great. The food was very good and the flight attendants were so nice. Made a 15 hour flight seem easy.

My journey with Qatar Airways from Ahmedabad to Jacksonville on 3rd February 2026 was truly exceptional. The entire experience reflected comfort, care, and world-class service. Complimentary high-quality Wi-Fi throughout the journey was a welcome luxury, especially on a long-haul flight. The vegetarian meals were thoughtfully prepared, delicious, and served with attention to detail, along with a fine selection of snacks and beverages. What truly elevated the experience was the cabin crew — graceful, courteous, and genuinely attentive, delivering outstanding hospitality at every step. This journey perfectly showcased the premium standard Qatar Airways is known for, and it left a lasting impression. I would gladly fly with them again.

The boarding process was awful-the computers were down and there was no way to check in. Took extremely long, very chaotic and no guarantee our bags were even getting on the plane. I was also delayed and took away from any time i had to catch a connecting flight.

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar/Indigo may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar/Indigo, wake up and do it right by your customers, or they may not be your customers anymore.

Very efficient and professional staff. Food was good and so was entertainment selection.

Crew and food was good, ok leg room if you don’t have a big box under the seat. And the seats are so narrow (I’m only 70kg), will consider an alternate airline next time

Paid $10 for wifi for full flight duration and the wifi wasn’t available after initial 2 hours

Boarding from DOH to SYD the Business Class were pointed in a separate gate but no one there to receive us. Otherwise it was ok.

The flight was delayed and one member of the crew was a bit rude. But apart from that all good.

I would love the entertainment center to be updated with more content. The flight to Doha had more options than the one to Miami

Early arrival. Good boarding. Deplaning this flight is very slow both coming and going. Baggage arrived quickly for Pearson

No entertainment except on app. No outlets working to charge. Good service

Nice crew , clean cabin , food was delayed due to problem with the quantity .

On this flight...fine. The one from India to Abu Dahbi, awful.

We have paid premium price for a business class Cabinet and we have received the old 777 with the following apart business class that is not to standard. It was very disappointing and it’s a very bad reputation for a premium airline company. This aeroplane should be the commission from being as a business class. We will pass this knowledge to our colleagues because the quality of business class in Etihad is not consistent and it is a lucky dip that sometimes you’re getting a good aeroplane and sometimes you’re getting their 30 years old aeroplane. The crew of the aeroplane have apologise and said that they hate this aeroplane and they have complained about it multiple times as well. Obviously Etihad is putting the economy in front of the Customer Experience. For the future we will not take this risk anymore and will fly with established company like emirates.

It was fantastic. The flight from Chicago to Abu Dahbi was fantastic. The crew, food and service were amazing. Everything was handled by the crew member assigned to us , Nicholas, was usually done before we asked for it. Highly recommend Etihad!

I didn’t have a flight because it was a fraud and you allow it. Illl never use Kayak again!!!

Seat space was tight and uncomfortable. There was hardly any cushioning giving me a terrible tail bone ache. Getting and out was extremely cramped. We paid for seat choices and felt totally ripped off. Food was mediocre. By the time the servers served 2 or 3 rows they ran out of this or that option as we saw on the inbound trip also. This is infuriating. Entertainment choices were extremely limited for such a long haul. The screen froze on occasion and did not switch off when the on off button was pressed. When it did it came back on its own in 5 seconds. The airlines has gone downhill since last year.

Crew was amazing as usual. Very comfortable for a 13hour flight. Check in at ATL was terrible. Ticket counter charged me $200 for a small bag. Apparently Kayak sold me a zero luggage ticket. No carry on no checked. So the check in desk charged me a bullshit $200 dollar fee for a small gym bag weighing less than 20lbs. In true 3rd party ticket buying. This will turn into a finger pointing process between Kayak and Etihad. Now I'm going to have to ship my bag back in the mail a day ahead of my return flight.

excellent, the staff was kind and the boarding process was with no issues or hassle

Majority of the staff were simply awesome and very very supportive and helpful

It would be great if the flight attendants could inform people travelling with small children that at take off and landing the children should drink liquid or chew/swallow something so their ears don’t hurt. Also, Emirates serves the food to the children first. Really good idea. Best of all would be to put all children in the same area.

Service was slow and checked bag was off last evening when flying business

The entertainment selection itself was ok but the screen couldn't be turned off which was annoying because I wanted to read and not be distubed by flashing lights in front of me. I could see other people having the same problem with their screens. The crew seemed to be too busy to be bothered by our questions/requests. I found the seat quite uncomfortable, especially for a long flight. As a short person, I've accepted the inconvenience of always having seats higher than comfortable, but my neck hurt after a while because the headrest was too high and couldn't be adjusted further. The seat pockets in this plane seemed to be faulty. I could see people near me having the same problem of everything falling on the floor because it kept detaching from the back of the seat. It was pretty useless to keep anything in it, even the menu and sick bag wouldn't stay in. The food was meh. The omellete was just a hunk of egg - my next flight leg also offered omellete but was so much better than this one.

The fact that my flight was cancelled and made wait for 14 Fing hours to booka flightto a neighboring country.... never again

The worst experience I have ever been in, they canceled my ticket the very last minute although it was Booked since October! They claimed it was not possible to change the schedule till January 11, 2026 and all my plans were screwed! My wife paid cash upfront a down payment for a surgery she was going to perform on dec 27th, and all these money lost! I’m considering seriously to get support

Loved the food. No wheelchair was provided in Sofia even though wheelchair assistance was confirmed by Turkish Airlines

Chicago to Istanbul was a much better experience than I expected since I’m more accustomed to Qatar Airways business class. The business lounge in the Istanbul airport was amazing - loved the lockers and phone charging stations, and the bathroom was a spa experience in itself. The onward leg from Istanbul to Karachi was utterly disappointing. Terrible plane, and I felt like I was in economy - the seats don’t come near to lying flat and the food was mediocre. What a sad downgrade - it isn’t as though the ticket on that leg was cheaper. So, on that front, there’s no contest with Qatar airways.

It was great! Great value for the price I paid. Great crew and great food in business class

The only hiccup was a change of plane and the resulting delayed departure, otherwise everything was more than OK.

Continue to be disappointed that the “food” for “ordinary” fare paying passengers is poor - on this flight it consisted of a packet of two biscuits and a small bottle of water … not even offered a “free” cup of tea or coffee. Suggest a review of the “menu” and offer a hot drink to ordinary (economy class) passengers. On this route there are many far cheaper flights available - paying almost £200 for a flight that could have been bought for less than half this price should have some “perks” - offering hot drinks to all passengers would, in my opinion, be a cost effective measure which would improve the image of British Airways.

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

The flight went well. However the leg room in coach class is very very tight. We arrived early but could not get to the gate early….sadly. Also something about off loading cargo- we had to wait to deplane. There was not clear explanation for that.

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Everything, every step of the process, from check in, to boarding, to exiting the plane was organized, efficient, and orderly. Excellent experience!

Why don't they board from the back of the plane to the front. We have to move by all the people and their luggage to get to the seats.

Horrible… I was downgraded without notice, had to sit in economy and given my back injury was in pain most of the journey. I expect to be reimbursed for this inconvenience and after my return flight home, I never plan to fly with British Airways again.

First time on BA but will fly with them from now on! Everything about the flight was superb!!!

The overall seat and cushion needs to be updated. It was hard and no support. My butt was numb for most of the flight. The food was subpar at best being in premium economy cost. The flight attendants were excellent and attentive during the whole flight. Disappointed I had to select our seats 24 hours prior.

Outdated from start to finish. Good was inedible, choice was very poor. They don’t seem to care

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Everything you need to know for your flight to Sydney

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