--- title: "Cheap Flights to Castleknock from CA $425 - Expedia.ca" description: "Looking for cheap flights to Castleknock? Few airlines offer no change fee on selected flights to your favourite destinations. Earn double rewards with airline miles + Expedia points. Get your last minute tickets now!" canonical: "https://www.expedia.ca/Cheap-Flights-To-Castleknock.d179046.Travel-Guide-Flights" language: en-CA market: CA currency: CAD prices_as_of: 2026-11-13T05:59:11Z --- # Cheap Flights to Castleknock from CA $425 ![A narrow waterway with boats, surrounded by greenery and buildings.](https://images.trvl-media.com/place/179046/a73e69d1-de41-4a26-8825-d8553324df6a.jpg?impolicy=fcrop&w=1200&h=500&q=medium) [View CA $425 flight on Tue, Apr 27, 2027](https://www.expedia.ca/Flights-Search?leg1=from:YHZ,to:DUB,departure:27/04/2027TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:424.52&airProductToken=AQoyCjAI16YBEgI0Mhj4yQEggw0ojsyrAzDYzqsDOEVAAFgBagVCQVNJQ3IITEswSjFMQlcSCggBEAEYASoCV1MYASIECAEQASgCKAMoBDAB) ## Popular airlines [Lufthansa](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock,%20Dublin,%20Ireland,departure:27/11/2026TANYT&leg2=from:Castleknock,%20Dublin,%20Ireland,to:CMH,departure:04/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) [British Airways](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock,%20Dublin,%20Ireland,departure:27/11/2026TANYT&leg2=from:Castleknock,%20Dublin,%20Ireland,to:CMH,departure:04/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) [Aer Lingus](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock,%20Dublin,%20Ireland,departure:27/11/2026TANYT&leg2=from:Castleknock,%20Dublin,%20Ireland,to:CMH,departure:04/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) [Iberia](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock,%20Dublin,%20Ireland,departure:27/11/2026TANYT&leg2=from:Castleknock,%20Dublin,%20Ireland,to:CMH,departure:04/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) [KLM](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock,%20Dublin,%20Ireland,departure:27/11/2026TANYT&leg2=from:Castleknock,%20Dublin,%20Ireland,to:CMH,departure:04/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) [Air France](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock,%20Dublin,%20Ireland,departure:27/11/2026TANYT&leg2=from:Castleknock,%20Dublin,%20Ireland,to:CMH,departure:04/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AF"}}]) [Swiss International Air Lines](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock,%20Dublin,%20Ireland,departure:27/11/2026TANYT&leg2=from:Castleknock,%20Dublin,%20Ireland,to:CMH,departure:04/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) ### Be in the know Get alerts if flight prices drop or rise\* ### Book smarter Save up to 30% on select hotels after you book a flight\* ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## How much is the cheapest flight to Castleknock? Prices were available within the past 7 days and start at CA $425 for one-way flights and CA $746 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select KLM flight, departing Tue, Mar 2 from Columbus to Dublin, returning Tue, Mar 9, priced at CA $991 Found 4 days ago](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:DUB,departure:02/03/2027TANYT&leg2=from:DUB,to:CMH,departure:09/03/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:990.50&airProductToken=AQp-Cj0Iy5gBEgQ3Mjk2GII7IKlRKOTUpgMw29WmAzhWQABYAWoFTElHSFRyCFZMWDkxTkJMegoIxJgBEgQ3Mjk2Cj0Iy5gBEgQ2MTkyGKlRIIMNKKzWpgMwrdmmAzhWQAFYAWoFTElHSFRyCFZMWDkxTkJMegoIxJgBEgQ2MTkyCqYBCjIIy5gBEgQxMTQwGIMNIICTASiFn6cDMOmfpwM4TEAAWAFqBUxJR0hUcghWTFg5MU5CTAoxCMuYARIDNjIxGICTASDgXCiqoKcDMOSkpwM4VkABWAFqBUxJR0hUcghWTFg5MU5CTAo9CMuYARIENTA4OBjgXCCCOyjcpacDMLampwM4VkABWAFqBUxJR0hUcghWTFg5MU5CTHoKCMSYARIENTA4OBIKCAEQARgBKgJLTBgBIgQIARABKAIoAygEMA0) Tue, Mar 2 - Tue, Mar 9 · CMH · DUB · Roundtrip [Select Air Canada flight, departing Mon, Mar 8 from Columbus to Dublin, returning Thu, Mar 11, priced at CA $994 Found 6 days ago](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:DUB,departure:08/03/2027TANYT&leg2=from:DUB,to:CMH,departure:11/03/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:993.68&airProductToken=AQpnCjIIwYYBEgQ4NzUyGII7IJjOASimlKcDMPWUpwM4TEAAWAFqBUJBU0lDcghMTEk5MFRCUQoxCMGGARIDODAwGJjOASCDDSiNmacDMI6cpwM4TEABWAFqBUJBU0lDcghMTEk5MFRCUQp5CkAIzJABEgQ2Njk0GIMNIJjOASi8s6cDMOq2pwM4TEAAWAFqCEVDT0xJR0hUcghMTEk5MFRCUXoJCMGGARIDODAxCjUIwYYBEgQ4NzU3GJjOASCCOyjtuqcDMMK7pwM4TEABWAFqCEVDT0xJR0hUcghMTEk5MFRCURIKCAEQARgBKgJBQxgBIgQIARABKAIoAygEMAE) Mon, Mar 8 - Thu, Mar 11 · CMH · DUB · Roundtrip [Select Delta flight, departing Tue, Mar 2 from Columbus to Dublin, returning Tue, Mar 9, priced at CA $996 Found 4 days ago](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:DUB,departure:02/03/2027TANYT&leg2=from:DUB,to:CMH,departure:09/03/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:995.29&airProductToken=AQpsCjUIxJgBEgQ1NjUwGII7IKlRKOTUpgMw29WmAzhFQABYAWoJTUFJTkJBU0lDcghWTFg5MU5CTAozCMSYARICNDQYqVEggw0orNamAzCt2aYDOEVAAVgBaglNQUlOQkFTSUNyCFZMWDkxTkJMCm0KNAjEmAESAzE3NxiDDSDgXCiknacDMMihpwM4RUAAWAFqCU1BSU5CQVNJQ3IIVkxYOTFOQkwKNQjEmAESBDI4OTIY4FwggjsopKKnAzD%5FoqcDOEVAAVgBaglNQUlOQkFTSUNyCFZMWDkxTkJMEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) Tue, Mar 2 - Tue, Mar 9 · CMH · DUB · Roundtrip [Select American Airlines flight, departing Tue, Mar 2 from Columbus to Dublin, returning Tue, Mar 9, priced at CA $996 Found 4 days ago](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:DUB,departure:02/03/2027TANYT&leg2=from:DUB,to:CMH,departure:09/03/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:995.29&airProductToken=AQplCjEIwYIBEgQ1ODg4GII7IO9ZKPLTpgMw1tSmAzhCQABYAWoFQkFTSUNyCE9MWDlDOUJWCjAIwYIBEgM3MjIY71kggw0ootamAzCe2aYDOEJAAVgBagVCQVNJQ3IIT0xYOUM5QlYKZQowCMGCARIDNzIzGIMNIO9ZKJKepwMw2aGnAzhCQABYAWoFQkFTSUNyCE9MWDlDOUJWCjEIwYIBEgQ1NTA2GO9ZIII7KPOipwMw36OnAzhCQAFYAWoFQkFTSUNyCE9MWDlDOUJWEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) Tue, Mar 2 - Tue, Mar 9 · CMH · DUB · Roundtrip [Select Air France flight, departing Tue, Mar 2 from Columbus to Dublin, returning Tue, Mar 9, priced at CA $996 Found 4 days ago](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:DUB,departure:02/03/2027TANYT&leg2=from:DUB,to:CMH,departure:09/03/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:995.30&airProductToken=AQp-Cj0IwYwBEgQzNTE3GII7IKlRKOTUpgMw29WmAzhWQABYAWoFTElHSFRyCFZMWDkxTkJMegoIxJgBEgQzNTE3Cj0IwYwBEgQzNTYyGKlRIIMNKKzWpgMwrdmmAzhWQAFYAWoFTElHSFRyCFZMWDkxTkJMegoIxJgBEgQzNTYyCn4KPQjBjAESBDM1OTgYgw0g4FwopJ2nAzDIoacDOFZAAFgBagVMSUdIVHIIVkxYOTFOQkx6CgjEmAESBDM1OTgKPQjBjAESBDU3MzcY4Fwggjsol6OnAzDxo6cDOFZAAVgBagVMSUdIVHIIVkxYOTFOQkx6CgjEmAESBDU3MzcSCggBEAEYASoCQUYYASIECAEQASgCKAMoBDAN) Tue, Mar 2 - Tue, Mar 9 · CMH · DUB · Roundtrip ## Find the cheapest month to fly from Columbus (CMH) to Dublin (DUB) ### March is typically the cheapest month to fly From CA $992 - CA $1,321 per traveller. View flights in March Insights are based on prices from searches for economy trips of 10 days or less on our sites in the last 12 months. Insights are informative only and current prices may differ. ## Book with confidence ### Find Your Flights to Castleknock DUB **Cheap flights to Castleknock (** **DUB)** Get started finding a cheap flight to Castleknock on Expedia by either choosing a deal on this page or using the search bar to enter your travel dates, origin airport, and whether you want a roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you. We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to Castleknock. Roundtrip prices range from CA $746 - CA $996, and one-ways Castleknock start as low as CA $425. Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate. **Airlines that fly to Castleknock (** **DUB)** You have several options for which airline you choose to travel with to Castleknock. There are 7 airlines flying into DUB: WestJet, Delta, American Airlines, KLM, Air France, Lufthansa, Air Canada. Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value. For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare. Additionally, your preferred frequent flyer membership programmes may influence your choice of cheap airline. Expedia allows you to enter your membership numbers during checkout to earn points from your airline and Expedia Rewards—all while getting a great deal and planning all your travel on one online platform. #### Find the best deals At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at optimal times. Airfare to Castleknock (DUB) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to DUB in November and in April for one-ways. #### Cancellation & flexibility To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24 hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our [customer service portal](https://www.expedia.ca/service/). Some plane tickets are available with no change fees, which you can filter for during your search. ## 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 kilometres 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 kilometres 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 organized 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. ## Travel information | Destination city name | Dublin | | ----------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Dublin Airport | | Destination airport IATA code | DUB | | Airlines serving | Lufthansa, British Airways, Aer Lingus, Iberia, KLM, Air France, Swiss International Air Lines, SAS, Air Canada, Ryanair, TAP Portugal, American Airlines, Icelandair, Delta, Austrian Airlines, Finnair, United, JetBlue Airways, Turkish Airlines, Brussels Airlines, Emirates, Qatar Airways, WestJet, Etihad Airways, Singapore Airlines, Luxair, LATAM Airlines Group, Qantas Airways, Norwegian Air Shuttle, Vueling Airlines, Air Baltic, China Eastern Airlines, Eurowings, Transavia France, Air Transat, IndiGo | | Popular airline | Lufthansa | | Roundtrip price | CA $991 | ## Trending flights to Castleknock Prices were available within the past 7 days and start at CA $425 for one-way flights and CA $746 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select Air Canada flight, departing Mon, Nov 16 from Toronto to Dublin, returning Mon, Apr 12, priced at CA $746 Found 1 hour ago](https://www.expedia.ca/Flights-Search?leg1=from:YYZ,to:DUB,departure:16/11/2026TANYT&leg2=from:DUB,to:YYZ,departure:12/04/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:745.52&airProductToken=AQqBAQo%5FCMGGARIEMzQ2NBiYzgEgxI0BKOKonQMwzKmdAzhLQABYAWoFQkFTSUNyCEtMN0FYSkJRegoI1YIBEgQzNDY0Cj4IwYYBEgQ1MzYyGMSNASCDDSihrZ0DMKKwnQM4S0ABWAFqBUJBU0lDcghLTDdBWEpCUXoKCNWCARIENTM2MhIKCAIQARgCKgJBQxgBIgQIARABKAIoAygEMA0) Mon, Nov 16 - Mon, Apr 12 · YYZ · DUB · Roundtrip \*Available to Expedia members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/Cheap-Flights-To-Castleknock.d179046.Travel-Guide-Flights en-IE: https://www.expedia.ie/Flights-To-Castleknock.d179046.Travel-Guide-Flights fr-BE: https://www.expedia.be/fr/Vols-Castleknock.d179046.Guide-De-Vol ar: https://www.expedia.sa/Cheap-Flights-To-Castleknock.d179046.Travel-Guide-Flights de-AT: https://www.expedia.at/Billigflug-Castleknock.d179046.Reise-Angebote-Flug fr-CH: https://www.expedia.ch/fr/Vols-Pas-Cher-Castleknock.d179046.Voyage-Guide-Vols en-AU: https://www.expedia.com.au/Flights-To-Castleknock.d179046.Travel-Guide-Flights nl-BE: https://www.expedia.be/Destinations-In-Castleknock.d179046.Vliegtickets en-US: https://www.expedia.com/Cheap-Flights-To-Castleknock.d179046.Travel-Guide-Flights nb-NO: https://www.expedia.no/Fly-Til-Castleknock.d179046.Reise-Guide-Fly en-GB: https://www.expedia.co.uk/Cheap-Flights-To-Castleknock.d179046.Travel-Guide-Flights ```