A narrow waterway with boats, surrounded by greenery and buildings.

£17 Cheap Flights to Castleknock

View £17 flight on Fri, 28 Aug 2026Opens in a new window

Flight 1

Popular airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Castleknock

Prices were available within the past 7 days and start at £17 for one-way flights and £34 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Ryanair
Sun, 16 Aug - Fri, 21 Aug
MAN
Manchester
DUB
Dublin
£34 Return, just found
£34
Return
just found
Select Ryanair flight, departing Sun, 16 Aug from Manchester to Dublin, returning Fri, 21 Aug, priced at £34 just found
Aer Lingus
Fri, 24 Jul - Mon, 27 Jul
BHX
Birmingham
DUB
Dublin
£57 Return, just found
£57
Return
just found
Select Aer Lingus flight, departing Fri, 24 Jul from Birmingham to Dublin, returning Mon, 27 Jul, priced at £57 just found
British Airways
Tue, 1 Dec - Mon, 7 Dec
LHR
London
DUB
Dublin
£82 Return, found 1 hour ago
£82
Return
found 1 hour ago
Select British Airways flight, departing Tue, 1 Dec from London to Dublin, returning Mon, 7 Dec, priced at £82 found 1 hour ago
Norwegian Air Sweden
Tue, 15 Sept - Wed, 23 Sept
LGW
London
DUB
Dublin
£124 Return, found 1 hour ago
£124
Return
found 1 hour ago
Select Norwegian Air Sweden flight, departing Tue, 15 Sept from London to Dublin, returning Wed, 23 Sept, priced at £124 found 1 hour ago
Iberia
Mon, 31 Aug - Mon, 7 Sept
LGW
London
DUB
Dublin
£126 Return, found 4 hours ago
£126
Return
found 4 hours ago
Select Iberia flight, departing Mon, 31 Aug from London to Dublin, returning Mon, 7 Sept, priced at £126 found 4 hours ago

Frequently asked questions

What is the name of Castleknock's airport?
Dublin Airport (DUB) is the main airport that serves Castleknock.
How far is Dublin Airport from central Castleknock?
If you're basing yourself in central Castleknock, you'll be there within moments after flying into Dublin Airport. This terminal is just 10 kms (6 miles) from downtown.
What airport is best to fly into Castleknock?
A flight to Castleknock means landing at Dublin Airport (DUB). Jump off the plane, pick up your luggage and you'll be 10 kms (6 miles) from the centre of town.
How many airlines fly to Castleknock?
There are 42 airlines that jet into Castleknock from 138 worldwide airports.
Which airlines fly to Castleknock?
Aer Lingus and British Airways are some of the top airlines with flights to Castleknock. Travellers often use London as a departure point with Aer Lingus flying this route the most.
How many nonstop flights are there to Castleknock?
With 1,737 direct flights running each week, you'll be hitting the tarmac in Castleknock before you have time to say, "Are we there yet?"
Where are the most popular flights to Castleknock departing from?
Flights to Castleknock departing from London, Amsterdam and Greater Manchester airports are the most popular.
How long is the flight to Castleknock Airport?
Which city you depart from determines how much of the in-flight entertainment you'll get to see. From London to Castleknock, the average flight time is 1 hour and 19 minutes. From Amsterdam it's more or less 1 hour and 39 minutes, and from Greater Manchester it's 1 hour and 4 minutes.
How to book the cheapest flight to Castleknock?
If you'd like to have some extra spending money on your trip to Castleknock, listen up! As every seasoned jet-setter will tell you, don't book at the very last minute. Fares are usually highest just prior to the departure date. Don't stop there, though. Do some research and check if there are multiple airports at your destination. Ticket prices often differ depending on which airport you pick. Make sure you compare prices across airlines too. Last of all, be prepared to lock in your seat quickly if you stumble on a real bargain. It might not be available for long. With a bit of knowledge and a little luck, the ideal airfare can be yours.
Do you have any tips for my flight to Castleknock?
If you're not prepared, airports and flying can be challenging. But don't hit the panic button just yet. Follow these handy tips for a comfortable start to your time in Castleknock. What to pack in your hand luggage:

  • The trick to having a great flight experience is to be prepared. So, let's start with the essentials: passport, travel documents, cash and any vital medications. Next, take on board items that'll help while away those hours, like some electronic devices or a thrilling novel. You'll also want to bring your chargers, a comfy neck pillow and a pair of earplugs. Last but not least, be sure to toss in toiletry items like a toothbrush, deodorant and a fresh change of clothes.

Do not pack the following items in your hand luggage:

  • Check carefully that you don't have a sharp object hiding in your hand luggage. Other restricted items include flammable or explosive products, like aerosols and matches, and liquids and gels in containers with a capacity of more than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • Comfort should be your main concern when choosing what to wear during your flight. Loose clothing is a sensible option, as are flat, slip-on shoes.
  • Deep vein thrombosis (DVT) is a risk on long-distance flights. It results from blood clotting due to inactivity and poor circulation, so do some gentle leg and foot exercises in your seat and consider wearing compression tights or socks.

How to get through airport security fast when flying to Castleknock?
As seasoned travellers know, the secret is to be organised before you arrive at airport security. That way, you'll be hopping onto that plane to Castleknock in no time flat. Follow these helpful tips and get your trip off to a terrific start:

  • Keep your passport and travel documents close by. They'll be the first things you'll be asked for by security.
  • After that, both you and your carry-on luggage must be X-rayed. To speed things up, take off anything that is likely to set the alarm off. Personal belongings such as your coat, belt and earphones need to go through the machine.
  • All electronic devices, including your laptop and phone, must also be scanned separately.
  • Any liquids or gels, such as perfume or toothpaste, that you want to take on board need to be in containers no larger than 3.4 ounces (100 millilitres). Also, everything must fit inside a quart-size (one litre), zip-lock bag.
  • Lightweight sneakers are a great footwear choice as you're less likely to have to remove them when passing through security. Hiking boots and heavier-style shoes are often subjected to extra screening.
  • Airlines won't allow any sharp items or pocket knives in your carry-on baggage. If you need to bring these kinds of items, put them in your checked luggage.

Book with confidence

Expedia flights to Castleknock

Searching for cheap flights to Castleknock? No travel company presents more choices than Expedia if you're looking to compare flights to Castleknock. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Dublin. Expedia provides the cheapest flights to many destinations in Dublin and you may find even greater savings if you combine your flight with a hotel stay in Castleknock.

Expedia is the largest online travel agency which means that Expedia have access to cheap flights. So make sure you check Expedia regularly for these bargain flights because the cheapest airline tickets sell out fast.

Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to Castleknock for that period and let you choose your preferred time and airline. If you need additional assistance, Expedia Customer Service representatives are available from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends. Our capable staff will be able to help you with any questions regarding your Castleknock flight, or other booking questions that may arise. When you book flights with Expedia you can rest assured that you have booked the best flight at the lowest price.

Expedia flights to Castleknock

Travel information

Destination airport
Dublin
Destination airport IATA code
DUB
Destination city name
Dublin
Return price
£34

Trending flights to Castleknock

Prices were available within the past 7 days and start at £17 for one-way flights and £34 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Ryanair
Sun, 23 Aug - Tue, 25 Aug
CWL
Cardiff
DUB
Dublin
£34 Return, found 1 hour ago
£34
Return
found 1 hour ago
Select Ryanair flight, departing Sun, 23 Aug from Cardiff to Dublin, returning Tue, 25 Aug, priced at £34 found 1 hour ago

Explore a world of travel with Expedia

*Available to Expedia members.