Title: $20 Cheap Flights to Grendon Underwood - Expedia.com ![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) # $20 Cheap Flights to Grendon Underwood [View $20 flight on Tue, Mar 17, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:DUB,to:LTN,departure:3/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:20.00&airProductToken=AQowCi4IxqQBEgMzMzIYgw0g62wo-OuHAzDD7IcDOKBAQABYAWoFQmFzaWNyBUJBU0lDEgwIARABGAEqAkZSMgAYASIECAEQASgCKAMwDQ) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only [Grendon Underwood Travel Guide](https://expedia.com/Grendon-Underwood.dx3000387938)[Hotels in Grendon Underwood](https://expedia.com/Grendon-Underwood-Hotels.d3000387938.Travel-Guide-Hotels)[Car Rentals in Grendon Underwood](https://expedia.com/Car-Rentals-In-Grendon-Underwood.d3000387938.Car-Rental-Guide)[Grendon Underwood Vacation Packages](https://expedia.com/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.com/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:2/26/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:3/5/2026TANYT&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.com/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:2/26/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:3/5/2026TANYT&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_IB.svg) Iberia [](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:2/26/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:3/5/2026TANYT&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.com/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:2/26/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:3/5/2026TANYT&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.com/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:2/26/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:3/5/2026TANYT&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.com/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:2/26/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:3/5/2026TANYT&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.com/Flights-Search?leg1=from:CMH,to:Grendon Underwood, Aylesbury, England, United Kingdom,departure:2/26/2026TANYT&leg2=from:Grendon Underwood, Aylesbury, England, United Kingdom,to:CMH,departure:3/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![](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 OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## How much is the cheapest flight to Grendon Underwood? Prices were available within the past 7 days and start at $20 for one-way flights and $43 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Ryanair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/FR.gif) Sat, Mar 14 - Sat, Mar 21 DUB Dublin LTN London $43 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:DUB,to:LTN,departure:3/14/2026TANYT&leg2=from:LTN,to:DUB,departure:3/21/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:42.63&airProductToken=AQowCi4IxqQBEgMzMzIYgw0g62wo5M2HAzCvzocDOKBAQABYAWoFQmFzaWNyBUJBU0lDCjAKLgjGpAESAzMzMRjrbCCDDSionYgDMPOdiAM4oEBAAFgBagVCYXNpY3IFQkFTSUMSCggBEAEYASoCRlIYASIECAEQASgCKAMoBDAN) ![easyJet](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/U2.gif) Wed, Mar 11 - Wed, Mar 18 BCN Barcelona LTN London $64 Roundtrip found 13 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:BCN,to:LTN,departure:3/11/2026TANYT&leg2=from:LTN,to:BCN,departure:3/18/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:63.10&airProductToken=AQorCikI1WQSBDIzMjQYwWgg62wov6mHAzDVqocDOFlAAFgBagVMaWdodHIBWQorCikI1WQSBDIzMjUY62wgwWgo3PuHAzDe_IcDOFlAAFgBagVMaWdodHIBWRIKCAEQARgBKgJVMhgBIgQIARABKAIoAygEMA0) ![EL AL Israel Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/ly.gif) Thu, Apr 16 - Thu, Apr 23 TLV Tel Aviv LTN London $339 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TLV,to:LTN,departure:4/16/2026TANYT&leg2=from:LTN,to:TLV,departure:4/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:338.67&airProductToken=AQowCi4IzLIBEgMzMTMY86oBIOtsKJbAigMw28KKAzhPQABYAWoETElURXIGT0wxTFBSCjAKLgjMsgESAzMxMhjrbCDzqgEo44yLAzCFj4sDOFVAAFgBagRMSVRFcgZVTDFMUFISDAgBEAEYASoCTFkyABgBIgQIARABKAIoAygEMAE) ![Fly One](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/5F.gif) Thu, Feb 26 - Wed, Jun 3 TLV Tel Aviv LTN London $509 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:TLV,to:LTN,departure:2/26/2026TANYT&leg2=from:LTN,to:TLV,departure:6/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:508.17&airProductToken=AQphCi8ItYwBEgQ1NTEwGPOqASCRcyjym4YDMKadhgM4TEAAWAFqBUxJR0hUcgVMTFRPVwouCLWMARIENTYxNxiRcyDrbCj8pYYDMM6nhgM4UUAAWAFqBUxJR0hUcgVRTFRPVwphCi4ItYwBEgQ1NjE4GOtsIJFzKPbfjgMwueGOAzhOQABYAWoFTElHSFRyBU5MVE9XCi8ItYwBEgQ1NTA5GJFzIPOqASiY544DMMLojgM4TkAAWAFqBUxJR0hUcgVOTFRPVxIKCAsQARgIKgI1RhgBIgQIARABKAIwAw) ![SunExpress](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/XQ.gif) Mon, Apr 27 - Thu, May 14 GLA Glasgow LTN London $565 Roundtrip found 16 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:GLA,to:LTN,departure:4/27/2026TANYT&leg2=from:LTN,to:GLA,departure:5/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:564.60&airProductToken=AQpECiAI2KIBEgM1NjUY5gIggJ4BKJy7iwMwub2LAzhBQABYAQogCNiiARIDNTMwGICeASDrbCjtw4sDMIXGiwM4TEABWAEKRAogCNiiARIDNTMxGOtsIICeASi7_IwDMLr-jAM4QUAAWAEKIAjYogESAzU2NBiAngEg5gIo9IKNAzClhY0DOFBAAVgBEgoIARABGAEqAkhSGAEiBAgBEAEoBDAB) ## Find the cheapest month to fly from Columbus (CMH) to London (LHR) ### November is typically the cheapest month to fly From $516 - $1,394 per traveler. ![](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.com/deals?rfrr=FTG_SPRING_PROMO_) ## Tips to find the cheapest flights to Grendon Underwood **The cheapest day to fly** Get started finding a cheap flight to Grendon Underwood on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want 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. **The cheapest month to fly** March is the cheapest month to fly to Grendon Underwood. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Grendon Underwood. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute. **The most affordable time to book a flight** Typically, a Sunday can be the cheapest time to book a flight to Grendon Underwood, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation. **The cheapest round-trip tickets to Grendon Underwood** The lowest price for round-trip flights to Grendon Underwood in 2026 starts from from $43, while one-way tickets start from from $20\. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Grendon Underwood. If you have a preferred departure time or airline, you can use the handy filters to customize your search. **The cheapest airlines flying to Grendon Underwood** Ryanair, easyJet, Fly One, EL AL Israel Airlines, Israir, SunExpress are just some of the airlines that can typically offer cheap tickets to Grendon Underwood. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Grendon Underwood and countless more destinations worldwide. **The most affordable airports to fly into** To view the cheapest airports to fly into for Grendon Underwood, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Grendon Underwood. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia. **Save with a package** With Expedia's amazing [package deals](https://www.expedia.com/package-deals), you could save hundreds of dollars by booking your Grendon Underwood plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving. **Date flexibility for the cheapest flights to Grendon Underwood** If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Grendon Underwood. **Stopover savings** The cheapest tickets to Grendon Underwood are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Grendon Underwood. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved. **Get Expedia's Price Drop Protection** Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference\*. This gives you peace of mind that you're getting one of the cheapest flights to Grendon Underwood for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members. \*Terms apply. **Use our Price Tracking feature** Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Grendon Underwood. Simply download the free Expedia app to your smart device and activate Grendon Underwood flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices. **Book with Expedia** As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Grendon Underwood. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. ## Frequently asked questions ### Where can I learn more about changing or canceling my flight to Grendon Underwood? ### How do I find cheap flights to Grendon Underwood that have flexible change policies? ### 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? ### 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. \*Flight schedules are subject to change. __Flights to Grendon Underwood information__ | Destination airport | Luton | | ----------------------------- | ------ | | Destination airport IATA code | LTN | | Destination city name | London | | Roundtrip price | $43 | ## Trending flights to Grendon Underwood Prices were available within the past 7 days and start at $20 for one-way flights and $43 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Turkish Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TK.gif) Mon, Apr 20 - Sun, Apr 26 MIA Miami OXF Oxford $990 Roundtrip found 13 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:MIA,to:OXF,departure:4/20/2026TANYT&leg2=from:OXF,to:MIA,departure:4/26/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:989.13&airProductToken=AQqHAQorCNSWARICNzgYjAIgyJwBKLbzigMw7fiKAzhXQABYAWoCUFNyBldWM1hQQwouCNSWARIEMTk4MxjInAEg64kBKOD5igMw0PuKAzhXQAFYAWoCUFNyBldWM1hQQwooCLmEARIDODU4GOuJASDuLSiq_IoDMP_8igM4U0ABWAFyBlNOWEFEVAqHAQooCLmEARIDODQxGO4tIOuJASiGtYsDMMy1iwM4U0AAWAFyBlNOWEFEVAouCNSWARIEMTk4OBjriQEgyJwBKKq4iwMwlbqLAzhXQAFYAWoCUFNyBldWM1hQQworCNSWARICNzcYyJwBIIwCKMS7iwMwo8GLAzhXQAFYAWoCUFNyBldWM1hQQxIKCAEQARgBKgJUSxgBIgQIARABKAIoAygEMAE) \*Available to One Key members.