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217 € Cheap Flights from London Heathrow to Grenoble

Compare London Heathrow to Grenoble flight deals

Find the cheapest month or even day of the year to fly to Grenoble

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Flight deals from London Heathrow Airport to Grenoble Airport

Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Grenoble Airport? If you want to travel next month, return fares start from 254 €. Find the lowest prices on one-way and return tickets right here.
Grenoble.217 € per passenger.Departing Sat, 14 Mar, returning Sun, 15 Mar.Return flight with British Airways and Jet2.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 14 Mar, arriving in Grenoble.Inbound indirect flight with Jet2, departs from Grenoble on Sun, 15 Mar, arriving in London Heathrow.Price includes taxes and charges.From 217 €, select.
Grenoble.243 € per passenger.Departing Sat, 16 Jan, returning Sat, 23 Jan.Return flight with British Airways and easyJet.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 16 Jan, arriving in Grenoble.Inbound indirect flight with easyJet, departs from Grenoble on Sat, 23 Jan, arriving in London Heathrow.Price includes taxes and charges.From 243 €, select.
Grenoble.254 € per passenger.Departing Sat, 11 Apr, returning Sat, 18 Apr.Return flight with British Airways and Jet2.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 11 Apr, arriving in Grenoble.Inbound indirect flight with Jet2, departs from Grenoble on Sat, 18 Apr, arriving in London Heathrow.Price includes taxes and charges.From 254 €, select.
Grenoble.301 € per passenger.Departing Sat, 12 Dec, returning Sun, 13 Dec.Return flight with British Airways and Jet2.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 12 Dec, arriving in Grenoble.Inbound indirect flight with Jet2, departs from Grenoble on Sun, 13 Dec, arriving in London Heathrow.Price includes taxes and charges.From 301 €, select.
Grenoble.401 € per passenger.Departing Thu, 26 Mar, returning Sun, 12 Apr.Return flight with British Airways and Jet2.Outbound indirect flight with British Airways, departs from London Heathrow on Thu, 26 Mar, arriving in Grenoble.Inbound indirect flight with Jet2, departs from Grenoble on Sun, 12 Apr, arriving in London Heathrow.Price includes taxes and charges.From 401 €, select.
Grenoble.564 € per passenger.Departing Sat, 19 Dec, returning Sat, 2 Jan.Return flight with British Airways and easyJet.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 19 Dec, arriving in Grenoble.Inbound indirect flight with easyJet, departs from Grenoble on Sat, 2 Jan, arriving in London Heathrow.Price includes taxes and charges.From 564 €, select.
Grenoble.1.399 € per passenger.Departing Sat, 13 Feb, returning Sun, 21 Feb.Return flight with British Airways and Jet2.Outbound indirect flight with British Airways, departs from London Heathrow on Sat, 13 Feb, arriving in Grenoble.Inbound indirect flight with Jet2, departs from Grenoble on Sun, 21 Feb, arriving in London Heathrow.Price includes taxes and charges.From 1.399 €, select.

Find the cheapest month to fly from London Heathrow to Grenoble

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Heathrow to Grenoble flights are currently cheapest in March.
Mar
from 217 €
Apr
from 254 €
May
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Jun
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Jul
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Aug
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Sep
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Oct
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Nov
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Dec
from 301 €
Jan
from 243 €
Feb
from 1.399 €

London Heathrow to Grenoble: Alternative routes

Compare routes from London Heathrow to Grenoble below. You may find an airport to fly into that's cheaper, faster, or easier than Grenoble.

Grenoble

36km from central Grenoble
Closest
from 217 €
Search flights

Chambery

52km from central Grenoble
from 315 €
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Lyon

78km from central Grenoble
Cheapest
from 126 €
Search flights

Annecy

88km from central Grenoble
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London to Grenoble: Flight information

The things to know before you go.
Cheapest flight found217 €
Cheapest month to flyMarch

Finding cheap flights from London Heathrow to Grenoble: Frequently asked questions

The best price we found for a return flight from London Heathrow to Grenoble is 217 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Heathrow to Grenoble. But we found flights with one or more stops from 217 €.
As of March 2026, there are no flights flying from London Heathrow to Grenoble.
The cheapest month to fly from London Heathrow to Grenoble is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Grenoble Airport on Saturday, 14 March 2026.
No airlines currently offer direct flights between London Heathrow Airport and Grenoble Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Grenoble but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Grenoble is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, British Airways offers the cheapest flight tickets to Grenoble.

Flying from London Heathrow Airport (LHR) to Grenoble-Isere Airport (GNB): what you need to know

  • Take a direct flight from London Heathrow Airport to Grenoble-Isere Airport and you'll be travelling for an average of 1 hour 55 minutes.

  • Grenoble's timezone is UTC+1, which makes Grenoble one hour ahead of London.

  • Your LHR to GNB flight won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.

  • During popular months like July, it's a good idea to get to the airport earlier. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during peak periods in general.

  • Jetting into Grenoble (and then seeing more of France!) is a cinch with British Airways. This popular airline offers direct flights from London Heathrow Airport to Grenoble-Isere Airport.

  • British Airways is the airline most travellers choose to fly with on this route.

  • The most punctual carrier operating LHR to GNB flights is British Airways. Its services land as planned 66.67% of the time.

  • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from London Heathrow Airport to Grenoble-Isere Airport, uncheck 'Direct flights only.' Then, choose a flight that has a stop long enough to visit the city of your choice. Worthwhile stopovers between LHR and GNB include:

    • Dublin Airport

    • Manchester Airport

    • Edinburgh Airport

How to find the cheapest flights from London Heathrow Airport (LHR) to Grenoble-Isere Airport (GNB)

  • Right now, 112 € is the lowest price we've found for a one-way London Heathrow Airport to Grenoble-Isere Airport flight. The best price for a return plane ticket is 217 €. Keep in mind that fares may change due to demand at the time of booking.

  • Score cheap tickets from LHR to GNB by booking at least four months ahead. According to our research, that's the sweet spot for finding a bargain.

  • The cheapest month for flights from London Heathrow Airport to Grenoble-Isere Airport is March. Use the 'Whole month' tool to find the lowest airfares if you have a flexible schedule.

  • Snapping up cheap flights from LHR to GNB is a breeze with Price Alerts. Simply create one of these automatic alerts and we'll notify you as soon as a new deal comes up.

  • Discover the right flight for you with the help of the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from London Heathrow Airport to Grenoble-Isere Airport, use the 'Sort by' tool. You can also filter results by arrival and departure times, airline, and journey duration.

Handy information about London Heathrow Airport (LHR)

  • Of the departures from London Heathrow Airport, 68.18% land on time at their destination.

  • London Heathrow Airport is about 31 kilometres from central London. If you're catching a cab, ride-sharing or driving from the centre, it'll take 55 minutes or so to arrive, depending on the traffic.

  • Planning to take public transport? You can expect a journey time of around 1 hour.

  • Get your journey off to a relaxed start by staying near LHR. Whether you're taking an early flight from London Heathrow Airport to Grenoble-Isere Airport or just don't want to be rushed, these stays have you covered:

Arriving at Grenoble-Isere Airport (GNB)

  • If you're landing on a late London Heathrow Airport to Grenoble-Isere Airport flight, nothing beats the convenience of being near the terminal. Pick up your bags from the carousel and then be showered and relaxing not long after at one of these accommodation options near GNB:

  • Travel at your own speed with a Grenoble-Isere Airport rental car. Pick up a set of wheels from Budget, Avis or Hertz and experience more of Grenoble and beyond.

  • For the best deal, reserve your ride from Grenoble-Isere Airport around two weeks before you set off.

Getting from Grenoble-Isere Airport (GNB) to central Grenoble

  • Grenoble-Isere Airport is roughly 48 kilometres from central Grenoble. Driving there takes about 35 minutes.

When to fly to Grenoble-Isere Airport (GNB)

  • March is the busiest month for flights from London Heathrow Airport to Grenoble-Isere Airport. To steer clear of the crowds, go to Grenoble in June.

  • When booking your flight from London Heathrow Airport to Grenoble-Isere Airport, consider the type of weather you like. July is the warmest month in Grenoble, with the temperature ranging from 12ºC (54ºF) to 29ºC (84ºF).

  • January sees average temperatures of between -6ºC (21ºF) and 8ºC (46ºF). Look for cheap tickets from LHR to GNB around that time if you like cooler conditions.

Explore more of France

  • You've visited Grenoble, now it's time to explore other parts of France. Journey around 483 kilometres north-west to Paris to tick off its top sights. From Eiffel Tower to Louvre Museum and Cathédrale Notre-Dame de Paris, your itinerary will be busy.

  • If you're looking to explore another well-known destination in France, consider Marseille, roughly 209 kilometres south of Grenoble. Old Port of Marseille, Le Panier and Cathédrale La Major are among the biggest draws.

More travel options

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Prices shown on this page are estimated lowest prices only. Found in the last 45 days.