Cheapest€63.27
- Brussels Airlines BA476806:401h 16m07:56Brussels BRUGrenoble GNB
Door to door 4h 26mCO2 161.9 kgChanges 0Fixed, no changes
Brussels to Grenoble flight
Flights from Brussels to Grenoble start at €73.30 and take 4h 26m at their fastest.
The Flights from Brussels to Grenoble starts at €73.30 and takes 4h 26m door to door, run by 1 operator over 658 km, with around 2 departures a day. Fares bottom out about 60 days before departure.
- 4h 26mDoor to door
- 1h 16mMoving
- €73.30From
- 161.9 kgCO2
The cheapest and the fastest on September 29, 2026
Two journeys we can sell today, with the service number each operator files them under.
Airlines
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From | Fastest | Typical speed | Flexibility | On board |
|---|---|---|---|---|---|
 Brussels Airlines | €63.27 | 4h 25m | 740 km/h | Fixed fare | Not published |
The flight gets you into Grenoble. It does not get you a bed, and neither do we.
Looking for somewhere to stay in Grenoble?
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When to book Brussels to Grenoble
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €70.1990 days
- €53.8360 days
- €72.3945 days
- €77.4330 days
- €84.5121 days
- €73.3014 days
- €119.917 days
- €184.813 days
- €198.381 days
- Cheapest lead time
- Fares bottom out around 60 days ahead, at €53.83.
- How much it moves
- The gap between the cheapest and most expensive lead time is 269 percent. The most expensive point is €198.38, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 60 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €96.31Sun
- €80.97Mon
- €80.97Tue
- €84.51Wed
- €111.06Thu
- €113.42Fri
- €101.62Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Brussels
Air
- BRU
- CRL
Grenoble
Air
- GNB
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 20% of the services we sell on this corridor run through without a change. The remaining 80% involve one connection.
- How far it really runs
- The route covers 658 km against 639 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Turin, Strasbourg, Lyon, Marne La Vallée. The gap between arriving and leaving is 53 minutes, of which about 14 is walking.
- If the connection is missed
- The tightest connection we sell here has a 18 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves Brussels at 06:40 and the last at 07:30, across 2 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Brussels to Grenoble
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Brussels to Grenoble take?
The Flight from Brussels to Grenoble takes 4h 26m door to door, of which 1h 16m is spent moving. The route runs 658 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Brussels to Grenoble cost?
The Flight from Brussels to Grenoble starts at €73.30 for one passenger, checked on September 29, 2026. A typical fare is €78.02. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Brussels to Grenoble?
1 operators run the Flight from Brussels to Grenoble: Brussels Airlines. Between them they file around 2 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Brussels to Grenoble use?
The Flight from Brussels to Grenoble leaves from Brussels BRU and arrives at Grenoble GNB. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Brussels to Grenoble?
Fares for the Flight from Brussels to Grenoble bottom out around 60 days ahead, at €53.83. The gap between the cheapest and most expensive lead time across the window is 269 percent, measured on September 29, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Brussels to Grenoble produce?
The Flight from Brussels to Grenoble produces about 161.9 kg of CO2 per passenger over 658 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Brussels to Grenoble on September 9, 2026: 658 km of route against 639 km in a straight line, 2 services a day, 1 operators, a cheapest fare of €73.30, and 4h 26m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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Landing at GNB after the trains have stopped is the case this solves. We do not run cars.
A car waiting when you land in Grenoble
Settled in advance, so the ride into Grenoble costs what it said it would rather than what the cab stand says.
Book a ride from GNB with Welcome PickupsOr check Daytrip
Partner links. We do not operate transfers. We earn a commission on a booking, and the fare is the same as going direct.