Title: Cheap Flights to Castleknock from CA $100 - Expedia.ca ![Pleasure boats in the Royal Canal in Castleknock Dublin Ireland; Shutterstock ID 193454756](https://images.trvl-media.com/place/179046/a73e69d1-de41-4a26-8825-d8553324df6a.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/179046/a73e69d1-de41-4a26-8825-d8553324df6a.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to Castleknock from CA $100 [View CA $100 flight on Tue, Jun 16, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:LHR,to:DUB,departure:16/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:99.50&airProductToken=AQowCi4IwoIBEgM4MjQY64kBIIMNKODqjwMwteuPAzhPQABYAWoFTk9CQUdyBU9aMFJPEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) [Castleknock Travel Guide](https://expedia.ca/Castleknock.dx179046)[Hotels in Castleknock](https://expedia.ca/Castleknock-Hotels.d179046.Travel-Guide-Hotels)[Castleknock Car Rentals](https://expedia.ca/Car-Rentals-In-Castleknock.d179046.Car-Rental-Guide)[Castleknock Vacation Packages](https://expedia.ca/Castleknock.d179046.Destination-Travel-Guides) ## Popular airlines - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock, Dublin, Ireland,departure:10/04/2026TANYT&leg2=from:Castleknock, Dublin, Ireland,to:CMH,departure:17/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EI.svg) Aer Lingus [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock, Dublin, Ireland,departure:10/04/2026TANYT&leg2=from:Castleknock, Dublin, Ireland,to:CMH,departure:17/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EI"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock, Dublin, Ireland,departure:10/04/2026TANYT&leg2=from:Castleknock, Dublin, Ireland,to:CMH,departure:17/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock, Dublin, Ireland,departure:10/04/2026TANYT&leg2=from:Castleknock, Dublin, Ireland,to:CMH,departure:17/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_IB.svg) Iberia [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock, Dublin, Ireland,departure:10/04/2026TANYT&leg2=from:Castleknock, Dublin, Ireland,to:CMH,departure:17/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock, Dublin, Ireland,departure:10/04/2026TANYT&leg2=from:Castleknock, Dublin, Ireland,to:CMH,departure:17/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Castleknock, Dublin, Ireland,departure:10/04/2026TANYT&leg2=from:Castleknock, Dublin, Ireland,to:CMH,departure:17/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### 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 $100 for one-way flights and CA $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Wed, Jul 15 - Wed, Jul 22 LHR London DUB Dublin CA $150 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:DUB,departure:15/07/2026TANYT&leg2=from:DUB,to:LHR,departure:22/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:149.10&airProductToken=AQovCi0IwoIBEgM4MjQY64kBIIMNKPuwkgMw0LGSAzhPQABYAWoFTk9CQUdyBE9aMFIKLwotCMKCARIDODM1GIMNIOuJASiyhpMDMP2GkwM4T0AAWAFqBU5PQkFHcgRPWjBSEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![Aer Lingus](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EI.gif) Thu, Apr 30 - Tue, May 5 LHR London DUB Dublin CA $210 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:DUB,departure:30/04/2026TANYT&leg2=from:DUB,to:LHR,departure:05/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:209.97&airProductToken=AQowCi4IxZIBEgMxNjkY64kBIIMNKPbeiwMw0N-LAzhBQABYAWoGTE9XX1NIcgRBT0szEgoIARABGAEqAkVJGAEiBAgBEAEoAigDKAQwDQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Tue, Jan 12 - Tue, Jan 26 LHR London DUB Dublin CA $288 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:DUB,departure:12/01/2027TANYT&leg2=from:DUB,to:LHR,departure:26/01/2027TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:287.90&airProductToken=AQpzCjIIzJABEgQyNDczGOuJASCMFSj-p6IDMOyoogM4TEAAWAFqBUxJR0hUcghMRVRMR1RVNAo9CMyQARIENDA4MhiMFSCDDSjQqaIDMOaqogM4TEABWAFqBUxJR0hUcghMRVRMR1RVNHoKCNaYARIENDA4MgpyCjAIzJABEgM5ODMYgw0gpQQo1sKjAzDOw6MDOEtAAFgBagVMSUdIVHIIS0VUTEdUVTQKPgjMkAESBDQyMjYYpQQg64kBKMHEowMwpcWjAzhLQAFYAWoFTElHSFRyCEtFVExHVFU0egoI1pgBEgQ0MjI2EgoIAhABGAIqAkxIGAEiBAgBEAEoAigDKAQwCw) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Mon, Jan 11 - Mon, Jan 25 LHR London DUB Dublin CA $304 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:DUB,departure:11/01/2027TANYT&leg2=from:DUB,to:LHR,departure:25/01/2027TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:303.30&airProductToken=AQpnCjIIwYwBEgQxMTgxGOuJASDiMCjIoKIDMJihogM4R0AAWAFqBUxJR0hUcghHWUwwMkFMQQoxCMGMARIEMTcxNhjiMCCDDSjIpaIDMLamogM4R0ABWAFqBUxJR0hUcghHWUwwMkFMQQpnCjEIwYwBEgQxMTE3GIMNIOIwKO28owMw1r2jAzhHQABYAWoFTElHSFRyCEdZTDAyQUxBCjIIwYwBEgQxNjgwGOIwIOuJASimw6MDMPvDowM4R0ABWAFqBUxJR0hUcghHWUwwMkFMQRIKCAEQARgBKgJBRhgBIgQIARABKAIoAygEMA0) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Sat, Nov 14 - Mon, Nov 16 LHR London DUB Dublin CA $304 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:LHR,to:DUB,departure:14/11/2026TANYT&leg2=from:DUB,to:LHR,departure:16/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:303.50&airProductToken=AQppCjMIy5gBEgQxMDE0GOuJASCAkwEorpOdAzCIlJ0DOEdAAFgBagVMSUdIVHIIR1lMOTJBTEEKMgjLmAESBDExNDUYgJMBIIMNKNOUnQMwspWdAzhHQAFYAWoFTElHSFRyCEdZTDkyQUxBCmkKMgjLmAESBDExMzQYgw0ggJMBKKOknQMwh6WdAzhHQABYAWoFTElHSFRyCEdZTDkyQUxBCjMIy5gBEgQxMDA1GICTASDriQEo8KWdAzDFpp0DOEdAAVgBagVMSUdIVHIIR1lMOTJBTEESCggBEAEYASoCS0wYASIECAEQASgCKAMoBDAN) ## Find the cheapest month to fly from Columbus (CMH) to Dublin (DUB) ### November is typically the cheapest month to fly From CA $651 - CA $1,745 per traveller. ## Frequently asked questions ### What is the name of Castleknock's airport? ### How far is Dublin Airport from central Castleknock? ### What airport is best to fly into Castleknock? ### How many airlines fly to Castleknock? ### Which airlines fly to Castleknock? ### How many nonstop flights are there to Castleknock? ### Where are the most popular flights to Castleknock departing from? ### How long is the flight to Castleknock Airport? ### How to book the cheapest flight to Castleknock? ### Do you have any tips for my flight to Castleknock? > - 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? > - 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.ca gives you the best tools to secure great deals on flights to Castleknock. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to Castleknock. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Castleknock. Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your Castleknock flights with full confidence knowing that you've found the best deal online. Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to Castleknock. Looking to save even more? Get additional savings by bundling your Castleknock flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your Castleknock trip! ## Travel information | Destination airport | Dublin | | ----------------------------- | ------- | | Destination airport IATA code | DUB | | Destination city name | Dublin | | Roundtrip price | CA $149 | ## Trending flights to Castleknock Prices were available within the past 7 days and start at CA $100 for one-way flights and CA $150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![WestJet](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/WS.gif) Tue, Jun 16 - Tue, Jun 23 YYZ Toronto DUB Dublin CA $559 Roundtrip just found [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:YYZ,to:DUB,departure:16/06/2026TANYT&leg2=from:DUB,to:YYZ,departure:23/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:558.01&airProductToken=AQpmCjII16YBEgM4MDgYmM4BIPjJASjf8Y8DMOHyjwM4RUAAWAFqBUJBU0lDcghMSzBEMFpCSQowCNemARICNDIY-MkBIIMNKK70jwMw-PaPAzhFQAFYAWoFQkFTSUNyCExLMEQwWkJJCjIKMAjXpgESAjQ3GIMNIJjOASjEu5ADMJC_kAM4RUAAWAFqBUJBU0lDcghMSzBEMFpCSRIKCAEQARgBKgJXUxgBIgQIARABKAIoAygEMAE) \*Available to Expedia members.