Title: Cheap Flights to Grendon Underwood from CA $42 - Expedia.ca ![Lodging Image](https://a.travel-assets.com/travel-assets-manager/bex-affinities/lodging.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://a.travel-assets.com/travel-assets-manager/bex-affinities/lodging.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights to Grendon Underwood from CA $42 [View CA $42 flight on Wed, Mar 25, 2026](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:GLA,to:LTN,departure:25/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:41.84&airProductToken=AQoqCigI1WQSAzY1NBjmAiDrbCiizIgDMOjMiAM4WUAAWAFqBUxpZ2h0cgFZEgoIARABGAEqAlUyGAEiBAgBEAEoAigDKAQwDQ) [Hotels in Grendon Underwood](https://expedia.ca/Grendon-Underwood-Hotels.d3000387938.Travel-Guide-Hotels)[Grendon Underwood Car Rentals](https://expedia.ca/Car-Rentals-In-Grendon-Underwood.d3000387938.Car-Rental-Guide)[Grendon Underwood Vacation Packages](https://expedia.ca/Grendon-Underwood.d3000387938.Destination-Travel-Guides) ## Popular airlines - ![](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:Grendon Underwood, Aylesbury, England, United Kingdom,departure:24/03/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:31/03/2026TANYT&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_LH.svg) Lufthansa [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:24/03/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:31/03/2026TANYT&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_AY.svg) Finnair [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:24/03/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:31/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) - ![](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:Grendon Underwood, Aylesbury, England, United Kingdom,departure:24/03/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:31/03/2026TANYT&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_KL.svg) KLM [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:24/03/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:31/03/2026TANYT&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_EI.svg) Aer Lingus [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:24/03/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:31/03/2026TANYT&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_VS.svg) Virgin Atlantic [](https://www.expedia.ca/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:24/03/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:31/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - 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Prices were available within the past 7 days and start at CA $42 for one-way flights and CA $92 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![easyJet](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/U2.gif) Thu, Mar 26 - Mon, Mar 30 EDI Edinburgh LTN London CA $92 Roundtrip found 5 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:EDI,to:LTN,departure:26/03/2026TANYT&leg2=from:LTN,to:EDI,departure:30/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:91.17&airProductToken=AQoqCigI1WQSAzMwMRjkQCDrbCiE0YgDMM_RiAM4WUAAWAFqBUxpZ2h0cgFZCioKKAjVZBIDNjA1GOtsIORAKMqDiQMwlYSJAzhZQABYAWoFTGlnaHRyAVkSCggBEAEYASoCVTIYASIECAEQASgCKAMoBDAN) ![easyJet](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/U2.gif) Thu, Mar 19 - Mon, Mar 23 BFS Belfast LTN London CA $92 Roundtrip found 5 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BFS,to:LTN,departure:19/03/2026TANYT&leg2=from:LTN,to:BFS,departure:23/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:91.25&airProductToken=AQorCikI1WQSAzYzNBihkQEg62wo74eIAzC1iIgDOFlAAFgBagVMaWdodHIBWQorCikI1WQSAzYyORjrbCChkQEopK-IAzD0r4gDOFlAAFgBagVMaWdodHIBWRIKCAEQARgBKgJVMhgBIgQIARABKAIoAygEMA0) ![easyJet](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/U2.gif) Thu, Mar 19 - Mon, Mar 23 EDI Edinburgh LTN London CA $94 Roundtrip found 6 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:EDI,to:LTN,departure:19/03/2026TANYT&leg2=from:LTN,to:EDI,departure:23/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:93.47&airProductToken=AQoqCigI1WQSAzMwMRjkQCDrbCikgogDMO-CiAM4WUAAWAFqBUxpZ2h0cgFZCioKKAjVZBIDMzA2GOtsIORAKMm1iAMwlLaIAzhZQABYAWoFTGlnaHRyAVkSCggBEAEYASoCVTIYASIECAEQASgCKAMoBDAN) ![SunExpress](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/XQ.gif) Sat, Apr 25 - Thu, Apr 30 GLA Glasgow LTN London CA $644 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:GLA,to:LTN,departure:25/04/2026TANYT&leg2=from:LTN,to:GLA,departure:30/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:644.00&airProductToken=AQpECiAI2KIBEgM1NjUY5gIggJ4BKNykiwMw-aaLAzhBQABYAQogCNiiARIDNTMwGICeASDrbCihrIsDMLmuiwM4TEABWAEKRAogCNiiARIDNTMxGOtsIICeASj73osDMPrgiwM4QUAAWAEKIAjYogESAzU2NBiAngEg5gIotOWLAzDl54sDOElAAVgBEgoIARABGAEqAkhSGAEiBAgBEAEoBDAB) ![EL AL Israel Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/ly.gif) Mon, Apr 27 - Wed, Apr 29 BCN Barcelona LTN London CA $1,818 Roundtrip found 10 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BCN,to:LTN,departure:27/04/2026TANYT&leg2=from:LTN,to:BCN,departure:29/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1817.50&airProductToken=AQphCi8IzLIBEgMzOTIYwWgg86oBKLO_iwMwqMGLAzhHQABYAWoETElURXIHR0wxU1BIUgouCMyyARIDMzEzGPOqASDrbCiWx4sDMNvJiwM4S0ABWAFqBExJVEVyBktSTDFMVRIKCAEQARgBKgJMWRgBIgQIARABKAIoAygEMAE) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.ca/deals?rfrr=FTG_SPRING_PROMO_) ## Frequently asked questions ### What is the name of Grendon Underwood's airport? ### What airport is best to fly into Grendon Underwood? ### How many airlines fly to Grendon Underwood? ### Which airlines fly to Grendon Underwood? ### How many nonstop flights are there to Grendon Underwood? ### Where are the most popular flights to Grendon Underwood departing from? ### How long is the flight to Grendon Underwood Airport? ### How to book the cheapest flight to Grendon Underwood? ### How to survive the flight to Grendon Underwood? > - The trick to having an awesome flight experience is to pack ahead. Start with the essentials: passport, travel docs, bank cards and important medications. Next, bring on board items that'll help keep you entertained, like some electronic devices or a good book. You'll also want to bring your chargers, a quality neck pillow and a pair of headphones. And of course, be sure to toss in toiletries like a toothbrush, deodorant and a spare change of clothes. > > > Do not pack the following items in your hand luggage: > > > - Put all your full-sized bottles of shampoo and hairspray in your checked luggage. Any liquids or gels in your carry-on bag larger than 3.4 ounces (100 milliliters) will be confiscated by security. Pointed or sharp objects, like your precious Swiss Army knife, and dangerous goods which are explosive or flammable, such as flares, chemicals agents and gasoline, are also restricted. > > > What to wear on a flight: > > > - The key to a comfortable flight is as simple as the clothes you wear. Prepare yourself for varying temperatures by bringing layers. This will keep you nice and warm if the cabin begins to cool down. Shoes like high heels and sandals are best left for other occasions. Even though they may be your favorites, opt for flat, closed-toed footwear like sneakers. Your feet will appreciate it. > - Most of us have heard about DVT (deep vein thrombosis), a blood clotting condition caused by prolonged periods of sitting. There are plenty of ways to lower your risk. Wear compression tights or socks, stay hydrated and keep your legs and feet moving. Do a lap or two of the cabin or perform some stretches in your seat. ### How to get through airport security fast when flying to Grendon Underwood? > - Airport security personnel first need to establish that you have a valid ID and boarding pass before anything else. Keep them close by. > - The X-ray machine comes next. Remove anything on you that is likely to beep. This includes items like earphones or headphones, as well as heavy jackets or coats. They'll need to be placed on the conveyor belt for screening. > - All your electronics, including your phone and laptop, must also be scanned. > - Traveling with a new perfume or cologne? Not a problem. As long as the volume is no greater than 3.4 ounces (100 milliliters) and it's stored in a clear zip-close bag, you're permitted to bring it with you in your carry-on bag. > - The right choice of footwear can save you several minutes. Boots and bulky shoes are often required to be removed and X-rayed separately. Slip-on shoes usually aren't. > - Sharp or pointed objects (like knives and scissors) are not allowed on board. They'll be seized at security, so put them in your checked luggage. ## Book with confidence Expedia.ca gives you the best tools to secure great deals on flights to Grendon Underwood. 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 Grendon Underwood. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Grendon Underwood. 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 Grendon Underwood 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 Grendon Underwood. Looking to save even more? Get additional savings by bundling your Grendon Underwood 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 Grendon Underwood trip! ## Travel information | Destination airport | Luton | | ----------------------------- | ------ | | Destination airport IATA code | LTN | | Destination city name | London | | Roundtrip price | CA $91 | \*Available to Expedia members.