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Cheap flights from Grenoble to London from £17

GNB — LON
19 Nov — 26 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Grenoble to London

Enter your travel dates to find the best prices.

Cheapest flights from Grenoble to London

Sat 12/1212:55 -
Nonstop1h 45m
Sat 19/1209:25 -
Nonstop1h 50m
Deal found 19/10£50
Sun 20/1216:50 -
Nonstop1h 50m
Sun 10/113:10 -
Nonstop1h 50m
Deal found 18/10£61
Sat 26/1218:25 -
Nonstop1h 40m
Sun 3/113:50 -
Nonstop1h 55m
Deal found 17/10£62
Sun 13/1212:20 -
Nonstop1h 50m
Sat 19/1206:30 -
Nonstop1h 50m
Deal found 18/10£63
Sun 27/1217:55 -
Nonstop1h 40m
Sun 3/113:50 -
Nonstop1h 55m
Deal found 16/10£64
Sun 27/1216:50 -
Nonstop1h 50m
Sun 3/113:10 -
Nonstop1h 50m
Deal found 16/10£65
Sun 27/1217:55 -
Nonstop1h 40m
Thu 31/1207:15 -
Nonstop1h 45m
Deal found 19/10£67
Sat 12/1212:55 -
Nonstop1h 45m
Sun 13/1208:00 -
Nonstop1h 55m
Deal found 18/10£68
Sun 13/1211:05 -
Nonstop1h 50m
Tue 15/1212:20 -
Nonstop1h 45m
Deal found 16/10£71
Sat 26/1216:10 -
Nonstop1h 50m
Sun 3/113:10 -
Nonstop1h 50m
Deal found 17/10£72

Find flight deals from Grenoble to London

Round-trip from

£50

One-way from

£17

Popular in

July

Cheapest in

January

Average price

£123
Ryanair
  • Ryanair
  • 12/12-19/12
  • Nonstop
  • 3h 35m total
  • Grenoble to London
Search Deals
Ryanair
  • Ryanair
  • 12/12-31/12
  • Nonstop
  • 1h 45m total
  • Grenoble to London
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£35 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Grenoble to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GrenobleLondon

GNB Grenoble - LTN London Luton

GNBLTN

Grenoble

Sat 12/12

12:55-13:40

Nonstop1h 45m

London Luton

Wed 31/12

00:00-00:00

Nonstop0h 00m

£17
Fastest return journey

GrenobleLondon

GNB Grenoble - LGW London Gatwick

GNBLGW

Grenoble

Sun 27/12

17:55-18:35

Nonstop1h 40m

London Gatwick

Wed 31/12

00:00-00:00

Nonstop0h 00m

£34

GrenobleLondon

GNB Grenoble - LTN London Luton

GNBLTN

Grenoble

Sun 27/12

16:50-17:40

Nonstop1h 50m

London Luton

Wed 31/12

00:00-00:00

Nonstop0h 00m

£34

GrenobleLondon

GNB Grenoble - LGW London Gatwick

GNBLGW

Grenoble

Sun 10/1

17:55-18:35

Nonstop1h 40m

London Gatwick

Wed 31/12

00:00-00:00

Nonstop0h 00m

£35

GrenobleLondon

GNB Grenoble - LGW London Gatwick

GNBLGW

Grenoble

Sat 26/12

18:25-19:05

Nonstop1h 40m

London Gatwick

Wed 31/12

00:00-00:00

Nonstop0h 00m

£35

GrenobleLondon

GNB Grenoble - LTN London Luton

GNBLTN

Grenoble

Sun 6/12

11:40-12:30

Nonstop1h 50m

London Luton

Wed 31/12

00:00-00:00

Nonstop0h 00m

£38

GrenobleLondon

GNB Grenoble - LTN London Luton

GNBLTN

Grenoble

Sat 26/12

16:10-17:00

Nonstop1h 50m

London Luton

Wed 31/12

00:00-00:00

Nonstop0h 00m

£40

GrenobleLondon

GNB Grenoble - LTN London Luton

GNBLTN

Grenoble

Sat 26/12

12:55-13:40

Nonstop1h 45m

London Luton

Wed 31/12

00:00-00:00

Nonstop0h 00m

£41

GrenobleLondon

GNB Grenoble - LTN London Luton

GNBLTN

Grenoble

Sat 23/1

09:45-10:30

Nonstop1h 45m

London Luton

Wed 31/12

00:00-00:00

Nonstop0h 00m

£47

GrenobleLondon

GNB Grenoble - LGW London Gatwick

GNBLGW

Grenoble

Mon 7/12

11:40-12:25

Nonstop1h 45m

London Gatwick

Wed 31/12

00:00-00:00

Nonstop0h 00m

£47

Flights are sorted by cheapest return flights first.

Deals found on 18/10

Showing 1-10 of 35 resultsSorted by cheapest first
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Best time to book a flight from Grenoble to London

Have a flexible travel schedule? Discover the best time to fly to London from Grenoble with our price prediction graph.
Estimated return price

Cheapflights Insights

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

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

One of the essential ways to save on airfare from Grenoble to London is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 81% on airfare.

How much does it cost for a return flight from Grenoble to London?

Airfare is below average for this route at the moment.
Grenoble to London flights typically cost between £101 and £181 in December.
The cheapest return price found within the last 5 days was £50 on Ryanair (12 Dec–19 Dec).

How far ahead should I book a flight from Grenoble to London?

Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from Grenoble to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

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

    Most people fly from Grenoble (GNB) if they book a flight from Grenoble to London. On average, Grenoble has 0 outbound flights to London per day from 0 airlines. Grenoble is conveniently located just 22.6 mi from Grenoble’s city center.

  • How long is the flight from Grenoble to London?

    There are many flights that can get you from Grenoble to London in 1h 40m. Fly via Wizz Air or easyJet to get the fastest option. Airlines will cover a distance of 473 mi. Generally, flights for this route are direct.

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

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

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

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

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

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

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Luton
Milton Keynes
Slough
Gatwick
Wembley
Hayes
Ilford
Croydon
Colchester
Barnet
Eastbourne
Brentford
Southend-on-Sea
Enfield
Southall
Watford
Kingston upon Thames
Dagenham
Dover

Browse thousands of different options on Cheapflights for your next trip

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

When you search for this flight from Grenoble to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from Grenoble.

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

Certainly. Search results for flights to London from Grenoble shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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