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Cheap flights from London Heathrow Airport to Grenoble

LHR — GNB
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Heathrow to Grenoble

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 12 September 2025.

Popular in

August

Cheapest in

March

Average price

£98
Highest demand for flights based on searches. 17% potential increase in price (£18 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Best time to book a flight from Heathrow to Grenoble

Have a flexible travel schedule? Discover the best time to fly to Grenoble from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Grenoble

What is the cheapest time of day to fly from LHR to GNB?

Find hourly flight availability from Heathrow to Grenoble. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2025.

It’s typically best to fly out from London Heathrow Airport to Grenoble at midday. Doing so could potentially save you 64% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Grenoble

Get insights into the airlines that provide service to Grenoble. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Grenoble. Reviews last updated 12 September 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Grenoble, such as easyJet and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
easyJet
6.9
Okay
1,820 reviews
Check prices

Crew

7.6

Overall

6.9

Entertainment

5.5

Comfort

6.7

Food

5.9

Boarding

6.7

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!
easyJet
6.9
Okay
1,820 reviews
easyJet
6.9
Okay
1,820 reviews
Check prices

Crew

7.6

Overall

6.9

Entertainment

5.5

Comfort

6.7

Food

5.9

Boarding

6.7

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!
British Airways
6.7
Okay
7,361 reviews
easyJet
6.9
Okay
1,820 reviews
Check prices

Crew

7.6

Overall

6.9

Entertainment

5.5

Comfort

6.7

Food

5.9

Boarding

6.7

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Grenoble. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Grenoble from London Heathrow?

    Grenoble (GNB) is the airport you will fly into if you book a flight from London Heathrow to Grenoble. You should not have trouble finding flights to Grenoble from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Grenoble airport from London Heathrow. It is only a 22.6 mi journey from Grenoble (GNB) to Grenoble’s city center.

  • What are the cheapest airlines flying from London Heathrow Airport to Grenoble round-trip?

    According to our current data, easyJet (£46), and British Airways (£133) offers the cheapest pricing from London Heathrow Airport to Grenoble.

  • Can I find deals for flights from Heathrow to Grenoble that include hotel bookings?

    Yes. In addition to deals on Heathrow to Grenoble flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Grenoble?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Grenoble.

  • Can I find deals for business class flights from Heathrow to Grenoble?

    Yes. Cheapflights offers flight deals from Heathrow to Grenoble by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 2 airlines flying from Heathrow to Grenoble

Discover the top 2 airlines that operate flights from Heathrow to Grenoble. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£46Average£212FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£133Average£467FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Grenoble?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Grenoble. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Grenoble?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Grenoble.

Can Cheapflights find flights from Heathrow to Grenoble with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Grenoble, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Grenoble become cheaper?

Of course! You can now track prices for flights from Heathrow to Grenoble and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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