Cheap Flights from London (LOND) to Grenoble (GNB)

Compare London 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 to Grenoble

Looking for a cheap last-minute deal or the best return flight from London to Grenoble? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from London to Grenoble

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Grenoble flights are currently cheapest in February.

Direct flights from London to Grenoble

London to Grenoble: Alternative routes

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

London to Grenoble: Flight information

The things to know before you go.
Cheapest flight found$73
Cheapest month to flyJanuary
Average flight time1 hr, 46 mins
Most popular airlineeasyJet
Average flights per week22

Finding cheap flights from London to Grenoble: Frequently asked questions

The best price we found for a return flight from London to Grenoble is $73. 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.
1 hour and 45 minutes is the average flight time from London to Grenoble.
easyJet, Ryanair and British Airways fly direct from London to Grenoble.
As of June 2025, there are 44 flights per week flying from London to Grenoble.
The cheapest month to fly from London to Grenoble is usually January.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Grenoble Airport on Saturday, 31 January 2026.
Yes – the average flight time is 1 hour and 45 minutes.
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.
The cheapest airline that flies to Grenoble is Wizz Air UK .

Travelling from London to Grenoble-Isere Airport (GNB): What you need to know

  • When organising a flight from London to Grenoble-Isere Airport (GNB), you'll have a good selection of airports to leave from. Check out London Heathrow Airport (LHR) and London Gatwick Airport (LGW) for departure options. Other possibilities include Stansted Airport (STN), London Luton Airport (LTN) and London City Airport (LCY).

  • The average length of a direct London to Grenoble-Isere Airport flight is 1 hour 55 minutes.

  • Grenoble-Isere Airport is located in Grenoble. The city follows the UTC+1 timezone and is one hour ahead of London.

  • Arrive at the airport on time so you don't miss your flight from London to GNB. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid sprinting to your gate.

  • If you're jetting off during a bank holiday or other peak period, give yourself more time. Arrive two hours ahead of domestic flights and up to four hours before international departures. Queues at check-in and security will be longer.

Airports in London

London Heathrow Airport (LHR)

  • Go straight to your destination from London Heathrow Airport (LHR). Nonstop flights from London to Grenoble-Isere Airport (GNB) operate from here.

  • When taking off from LHR, you can take a direct flight from London to Grenoble-Isere Airport with British Airways.

  • The majority of passengers choose to fly with British Airways from LHR to GNB.

  • British Airways is the most punctual carrier on this route, with 66.67% of its services arriving as scheduled.

  • LHR is about 31 kilometres from central London. If you're driving, catching a cab or ride-sharing from the centre, it'll take 55 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the journey time to be around 1 hour.

  • Have an early flight from London to Grenoble-Isere Airport? Avoid the mad dash to the terminal (and get some extra shut-eye) by staying at one of these hotels near London Heathrow Airport:

  • 68.18% of flights that take off from London Heathrow Airport arrive at their destination on time.

London Gatwick Airport (LGW)

  • Consider starting your journey from London Gatwick Airport (LGW). You can book a direct London to Grenoble-Isere Airport (GNB) flight ticket with departures from this hub.

  • Popular airlines that offer direct flights from London to GNB taking off from LGW include:

  • easyJet has the largest share of bookings on the LGW to GNB route.

  • Flights between London Gatwick Airport and Grenoble-Isere Airport are more likely to arrive as scheduled with British Airways than with any other carrier.

  • With public transport, you can travel from central London to LGW in about 30 minutes. The airport is roughly 80 kilometres away, and getting there by car will take approximately 1 hour 20 minutes.

  • Want to enjoy an extra night away before boarding your London to GNB flight? Check in to a hotel near London Gatwick Airport before your break officially begins. Here's where you can stay:

  • 69.26% of flights out of London Gatwick Airport arrive according to schedule.

Stansted Airport (STN)

  • Kick off your adventure at Stansted Airport (STN) and go straight to your destination without any layovers. You can book direct flights from London to Grenoble-Isere Airport from here.

  • Ryanair is one airline that offers direct London to GNB flight tickets from STN.

  • The majority of travellers prefer to fly with Ryanair from STN to GNB.

  • Ryanair is the most consistent performer for punctuality on this route.

  • The journey time to STN from the centre of London is around 1 hour 25 minutes on public transport. If you're going by car, it'll take you about 1 hour to cover the 64 kilometres or so.

  • Stay in bed a little longer and still make your London to Grenoble-Isere Airport flight with time to spare. These accommodation options near Stansted Airport make departure day a breeze if you're jetting off early:

  • The on-time performance record of STN is 64.73%. In other words, that's how often flights that depart this airport arrive within the expected time frame.

About Grenoble-Isere Airport (GNB)

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

  • The cheapest price we've found for a one-way ticket from London to Grenoble-Isere Airport is $38. For a return flight on this route, the best price is $73. Depending on when and how early you book, these fares could change.

  • Book eight months before you want to travel. Pricing trends show that this is the ideal window for finding cheap flights from London to GNB.

  • Organise your trip for January. That's the best month for landing an incredible deal on London to Grenoble-Isere Airport tickets. If you're flexible with your travel dates, use the 'Whole month' tool to find the lowest price across each month.

  • Save time looking for cheap flight tickets from London to GNB by creating a Price Alert. We'll send you an email or notification on the app when a lower fare pops up.

  • Tailor your trip using filters. Choose your ideal departure and arrival times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from London to Grenoble-Isere Airport.

The best time to fly from London to Grenoble-Isere Airport (GNB)

  • March is the most popular month for flights from London to Grenoble-Isere Airport (GNB). Visit Grenoble in October for a more low-key escape.

  • Lock in a London to GNB flight ticket departing in July if you want to explore the city during its warmest month. Expect temperatures in Grenoble to range from 12ºC (54ºF) to 29ºC (84ºF).

  • January sees temperatures of between -6ºC (21ºF) and 8ºC (46ºF). Look for cheap tickets from London to Grenoble-Isere Airport around that time if you'd rather travel in cooler conditions.

More about Grenoble

Explore more of France

  • Marseille is just one of the many places in France waiting to be explored once you've taken in the sights of Grenoble. Around 225 kilometres away to the south, check out popular attractions including Les Calanques, Basilique Notre-Dame-de-la-Garde and Basilique du Sacre-Ceour.

  • Around 241 kilometres south-east of Grenoble, Nice is another favourite stop in France. No visit is complete without checking out Mission Promenade des Anglais, Vieux-Nice and Promenade Des Anglais.

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