£435 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 11/5. 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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Flight Deals

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

Tue, 26 May - Thu, 6 Aug
Etihad Airways Logo
20:35 - 16:50
DUB
-
SYD
35h 15m
1 stop
Etihad Airways Logo
21:30 - 19:05
SYD
-
DUB
30h 35m
1 stop
£870Etihad Airways
Tue, 26 May - Mon, 6 Jul
Etihad Airways Logo
20:35 - 16:50
DUB
-
SYD
35h 15m
1 stop
Etihad Airways Logo
15:40 - 07:15
SYD
-
DUB
24h 35m
1 stop
£872Etihad Airways
Tue, 2 Jun - Tue, 30 Jun
Etihad Airways Logo
20:35 - 16:50
DUB
-
SYD
35h 15m
1 stop
Etihad Airways Logo
21:30 - 19:05
SYD
-
DUB
30h 35m
1 stop
£873Etihad Airways
Sat, 6 Jun - Wed, 1 Jul
Etihad Airways Logo
20:35 - 16:50
DUB
-
SYD
35h 15m
1 stop
Etihad Airways Logo
15:40 - 19:05
SYD
-
DUB
36h 25m
1 stop
£887Etihad Airways
Sun, 17 May - Wed, 20 May
Etihad Airways Logo
20:35 - 16:50
DUB
-
SYD
35h 15m
1 stop
Etihad Airways Logo
15:40 - 19:05
SYD
-
DUB
36h 25m
1 stop
£893Etihad Airways
Fri, 5 Jun - Sat, 4 Jul
Etihad Airways Logo
09:00 - 16:50
DUB
-
SYD
22h 50m
1 stop
Etihad Airways Logo
21:30 - 07:15
SYD
-
DUB
42h 45m
1 stop
£900Etihad Airways
Wed, 27 May - Mon, 15 Jun
Etihad Airways Logo
09:00 - 16:50
DUB
-
SYD
22h 50m
1 stop
Etihad Airways Logo
15:40 - 19:05
SYD
-
DUB
36h 25m
1 stop
£910Etihad Airways
Thu, 1 Oct - Tue, 13 Oct
Turkish Airlines Logo
05:45 - 09:35
DUB
-
SYD
42h 50m
2 stops
Turkish Airlines Logo
22:05 - 09:35
SYD
-
DUB
45h 30m
2 stops
£913Turkish Airlines
Sun, 11 Oct - Tue, 20 Oct
Multiple Airlines Logo
05:45 - 07:05
DUB
-
SYD
39h 20m
3 stops
Multiple Airlines Logo
08:05 - 09:35
SYD
-
DUB
35h 30m
3 stops
£916Multiple Airlines
Thu, 21 May - Wed, 17 Jun
Qatar Airways Logo
08:15 - 17:30
DUB
-
SYD
24h 15m
1 stop
Qatar Airways Logo
14:50 - 20:15
SYD
-
DUB
38h 25m
1 stop
£929Qatar Airways
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 £870 return. The most popular connection is from London to Sydney and KAYAK users have found return deals for as low as £768 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 September, where tickets cost £959 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 £1,443 and £1,403 respectively. For one-way flights, the best month to travel is September with an average price of £959.

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 4 weeks before departure, which saves you about 15% 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£435
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (33% 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 £870 return. The most popular connection is from London to Sydney and KAYAK users have found return deals for as low as £768 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 3568 reviews
8.2Entertainment
8.1Boarding
8.0Comfort
8.3Crew
7.9Food
Airline reviews

What a great trip . From check in to the upgrade we received a big shout out to Cleverson who was able to help us navigate the whole process super patient and was just one of the best customer service experiences we received in a very long time . The amazing staff on the flight who went above and beyond to make sure we were comfortable amazing food and service if you have te opportunity to upgrade it's a must and well worth it.

10.0 ExcellentAnonymous, Apr 2026
JFK - MXP
Read more Emirates reviews

What a great trip . From check in to the upgrade we received a big shout out to Cleverson who was able to help us navigate the whole process super patient and was just one of the best customer service experiences we received in a very long time . The amazing staff on the flight who went above and beyond to make sure we were comfortable amazing food and service if you have te opportunity to upgrade it's a must and well worth it.

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 did great! I liked the service, the food, cleanness, and the flight was on time. Much better airline than Qatar Airways I flew with last year.

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.

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

The boarding was not as organized as what I experienced in Houston. We were able to depart on time and landed in Lagos as scheduled.

This was my third time using Turkish Airlines. I was well satisfied with the overall experience! I believe that no one is perfect and that everyday we are trying to do the best we can to help others by giving a part of our lives through service. I believe from what I’ve seen that Turkish Airlines, have come close to that service! I will definitely recommend and reuse their services again! Thank you!

The seats seems abit small and the reclining is too much, the seat in front of me came back too much and made it uncomfortable for me.

Staff at the airport wasn't helpful or friendly. Probably the worst airport experience I have ever had, going and coming. The staff on the plane was better. Still not super friendly or personable. However, they were not rude like airport staff. They ran out of certain menu items. Maybe could have been prepared better? Overall just ok.

It was a pleasant experience. In flight entertainment could have been better

It was peaceful excited We enjoyed it always Turkish peaceful excited

Worst of the 3 flights so far. Food was not good, wasn’t ask my choice. Airplane was the A320 which was not as nice as the 787. Left and arrived late.

Extremely bad BAD BAD BAD. NEVER TURKISH AIRLINES EVER AGAIN..PIRATES COMPANY.

The connecting flight experience was okay. Flight crew's service were great upon settling. However, it wasn't the same as previous flight. Flight crew were okay - friendly, however, not as accommodating.

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

I booked tickets for a family of five and specifically paid extra to select our seats together. We spent nearly $1,000 extra (around $100 per seat) for extra legroom so we could sit near each other. However, despite paying for this, we ended up being separated on the flight. This caused a major issue for our family because my parents do not speak English and rely on me to translate and assist them during the journey. I do not understand why Etihad changed our reserved seats without explanation. I am extremely dissatisfied with this experience. I expect the airline to do better, and I am requesting a full refund for the seat selection fees we paid.

Limit the number of usage of wine or please arrange our seats. The passenger was drunk on this flight and not on Thiruvananthapuram to Abudhabi.

Flight got canceled due to Middle East conflict. Just fly hasn’t refunded me the money

Unfortunately the flight was cancelled so I never got to go

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

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!!!

1st class seats NOT REALLY 1st class or business class but like premier economy. Should be listed as such or named something else. I have flown 1st class with other airlines and they are nothing like it at all.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

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!!!

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Everything you need to know for your flight to Sydney

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