Cheap Flights to Grendon Underwood: Grendon Underwood Flight Deals

View €16 flight on Thu, 6 Nov 2025Opens in a new window

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Cheap round-trip flights to Grendon Underwood

Prices were available within the past 7 days and start at €16 for one-way flights and €33 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wizz Air
Tue, 11 Nov - Fri, 14 Nov
SOF
Sofia
LTN
London
€33 Return, found 1 day ago
€33
Return
found 1 day ago
Select Wizz Air flight, departing Tue, 11 Nov from Sofia to London, returning Fri, 14 Nov, priced at €33 found 1 day ago
Wizz Air
Thu, 6 Nov - Sun, 9 Nov
SOF
Sofia
LTN
London
€36 Return, found 20 hours ago
€36
Return
found 20 hours ago
Select Wizz Air flight, departing Thu, 6 Nov from Sofia to London, returning Sun, 9 Nov, priced at €36 found 20 hours ago
Ryanair
Mon, 15 Sep - Mon, 22 Sep
ORK
Cork
LTN
London
€36 Return, found 3 days ago
€36
Return
found 3 days ago
Select Ryanair flight, departing Mon, 15 Sep from Cork to London, returning Mon, 22 Sep, priced at €36 found 3 days ago
easyJet
Thu, 2 Oct - Sun, 5 Oct
BFS
Belfast
LTN
London
€69 Return, found 5 hours ago
€69
Return
found 5 hours ago
Select easyJet flight, departing Thu, 2 Oct from Belfast to London, returning Sun, 5 Oct, priced at €69 found 5 hours ago
British Airways
Wed, 17 Sep - Thu, 18 Sep
BHD
Belfast
OXF
Oxford
€269 Return, found 11 hours ago
€269
Return
found 11 hours ago
Select British Airways flight, departing Wed, 17 Sep from Belfast to Oxford, returning Thu, 18 Sep, priced at €269 found 11 hours ago

Find the cheapest month to fly from Columbus (CMH) to London (LHR)

January is typically the cheapest month to fly

From €444 - €1,342 per traveller.

Graph displaying average flight prices per month

Expedia.ie is an online travel company that specialises in securing the best prices for flights to Grendon Underwood. With Expedia you get highly specialised services, combining the best of technology, in-depth knowledge and the best connections in order to offer great deals to Grendon Underwood. Expedia shares your passion for travel and has built the best online travel service that promotes and encourages travel. Whether you are looking for cheap flights to Grendon Underwood, or are just on the lookout for the best flights to Grendon Underwood, you are sure to find the best deals with Expedia.ie.

"One of the many benefits of booking your flights through Expedia is that we are one of the world’s largest online travel agency, which means we use our collective experience and work tirelessly to bring you the best prices. With Expedia you get a user-friendly internet experience and a dedicated customer support service that ensures that everything goes smoothly. The goal of Expedia is to offer premium services at the lowest price, all at one single place. If you wish to save even more try combing a hotel in Grendon Underwood to your flight and create a personalised low cost city break or holiday to your favourite destination. Book early and you could save even more!

If you have an Expedia.ie itinerary number and have a question or concern about your travel plans you can call us on (01) 524 5005 from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends and an Expedia agent will help you.

Frequently asked questions

What is the name of Grendon Underwood's airport?
Grendon Underwood is served by multiple airports, but most travellers use Heathrow Airport (LHR).
What airport is best to fly into Grendon Underwood?
With plenty of airports to pick from, Grendon Underwood is one of those places that's easy to book a ticket to at the last moment. The terminals that deal with the majority of the city's air travel are Heathrow Airport (LHR) (56 kilometres from downtown), LGW (97 kilometres from downtown) and London Stansted Airport (88 kilometres from downtown).
How many airlines fly to Grendon Underwood?
There are a total of 110 airlines connecting Grendon Underwood to 343 airports across the world.
Which airlines fly to Grendon Underwood?
Grendon Underwood receives the majority of its flights from KLM, British Airways and Flybe with KLM being the preferred choice of carrier. Schiphol is the most popular city for passengers to jet off from.
How many nonstop flights are there to Grendon Underwood?
Organising an exciting Grendon Underwood holiday is a piece of cake when there are 8,647 nonstop flights every week to pick from.
Where are the most popular flights to Grendon Underwood departing from?
Flights to Grendon Underwood from Dublin, Edinburgh and Barcelona airports are in high demand.
How long is the flight to Grendon Underwood Airport?
Which city you depart from determines how much of the in-flight entertainment you'll get to see. From Dublin to Grendon Underwood, the average flight time is 1 hour and 22 minutes. From Schiphol it's more like 1 hour and 10 minutes, and from Edinburgh it's 1 hour and 25 minutes.
How to book the cheapest flight to Grendon Underwood?
We all know those fortunate travellers who manage to score incredibly cheap airfares whenever they fly. Want to know how to do it for your Grendon Underwood holiday? Don't leave it until the last minute to lock in your flight. Another fantastic way to pick up the most competitive fare is to compare all options. If your destination has more than one airport, be sure to look into the cost of flying into a smaller terminal. And finally, remember that the early bird catches the worm. Know what a typical airfare costs and have your credit card ready to buy your ticket as soon as you see an unbeatable bargain. The best deals never last long.
How to survive the flight to Grendon Underwood?
Wherever you're coming from, flying can be an enjoyable experience if you've planned ahead. We've compiled a list of handy hints that will get your Grendon Underwood holiday started on the right foot.What to pack in your hand luggage:

  • 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 favourites, 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?
The trick is to be prepared before you get to the security gate. That way, you'll be stepping onto that plane to Grendon Underwood in the blink of an eye. Follow these helpful tips and get your holiday off to a terrific start:

  • 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.
  • Travelling 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.

Flights to Grendon Underwood information
Destination airport
Luton
Destination airport IATA code
LTN
Destination city name
London
Return price
€77

Trending flights to Grendon Underwood

Prices were available within the past 7 days and start at €16 for one-way flights and €33 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Ryanair
Mon, 15 Sep - Mon, 22 Sep
ORK
Cork
LTN
London
€36 Return, found 3 days ago
€36
Return
found 3 days ago
Select Ryanair flight, departing Mon, 15 Sep from Cork to London, returning Mon, 22 Sep, priced at €36 found 3 days ago
*Available to Expedia members.