Cheap flights from London (LON) to Grenoble (GNB)
Find cheap flights from London to Grenoble with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Find flight deals from London to Grenoble
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Grenoble (GNB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 1 star |
Popular in | October |
Cheapest in | January |
Average price | $89 |
- Most accurate provider: When it comes to deals on London-Grenoble flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Grenoble flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Grenoble flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London-Grenoble flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Grenoble flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from London to Grenoble
Have a flexible travel schedule? Discover the best time to fly to Grenoble from London with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from London to Grenoble
How far ahead should I book a flight from London to Grenoble?
The price you pay for your flight from London to Grenoble may vary depending on when you book. For the best chance of a lower fare, look to book 16 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London to Grenoble?
Currently, February is the cheapest month in which you can book a flight from London to Grenoble (average of $28). Flying from London to Grenoble in April is currently the most expensive (average of $117). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LON to GNB?
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Grenoble as you normally would.
How often are flights from London to Grenoble delayed?
About 22% of weekly flights between London and Grenoble have experienced delays in the past year, with the average delay time being 101 minutes.
What is the most punctual flight time for London to Grenoble flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Grenoble flights?
Over the last year, Wizz Air have had the lowest number of delays on this route, with just 18% of flights being delayed.