Compare Medium Haul

Train vs Flight: Nantes to Sierre/Siders

Q: Is train or flight faster from Nantes to Sierre/Siders?

Flight is faster from Nantes to Sierre/Siders, taking 3h 20m door-to-door versus 6h 21m for the train. However, the train produces 84% less CO2.

Q: What is the door-to-door travel time for train vs flight Nantes to Sierre/Siders?

Door-to-door travel time from Nantes to Sierre/Siders: Train takes 6h 21m total (5h 51m journey + 30 min station check-in). Flight takes 3h 20m total (50m flight + 2.5 hours airport overhead for check-in, security, boarding, and taxi).

Q: How far is Nantes from Sierre/Siders?

The straight-line distance from Nantes to Sierre/Siders is 699 km (699 km). The actual rail distance will be longer due to track routing.

🇫🇷 Nantes → 🇨🇭 Sierre/Siders · 699 km

Verdict

Flight is faster by 3h 1m door-to-door, but train produces 84% less CO2 — worth considering.

On this medium-haul route from Nantes to Sierre/Siders, the flight is faster door-to-door, but the train is a greener alternative — saving 150 kg of CO2 per passenger. If your schedule allows extra travel time, the train offers a comfortable, eco-friendly journey.

Comparison

	Train	Flight ✓
Journey time	5h 51m	50m
Door-to-door incl. check-in / airport	6h 21m +30 min at station	3h 20m +2h 30min at airport
CO2 emissions avg. estimate per passenger	28,7 kg	178,2 kg
Est. ticket price rough estimate only	~€56	~€84
City centre arrival	Central station	Airport (outside city)

* Price and CO2 figures are rough average estimates. Actual values vary by booking class, date, operator, and energy mix. Journey times are based on existing route data or standard speed assumptions.

CO2 Savings

Save 149,5 kg CO2 — 84% less than flying

Train: 28,7 kg CO2 · Flight: 178,2 kg CO2 (41g/km train vs 255g/km flight, European averages incl. radiative forcing)

Train

28,7 kg

Flight

178,2 kg

Door-to-Door Breakdown

Train

Check-in at station 30 min

Journey time 5h 51m

Total door-to-door 6h 21m

Flight

Faster door-to-door

Airport overhead 2h 30 min

Flight time 50m

Total door-to-door 3h 20m

Train tickets for this route

Nantes → Sierre/Siders · full route details

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Frequently Asked Questions

Is train or flight faster from Nantes to Sierre/Siders?

Flight is faster from Nantes to Sierre/Siders, taking 3h 20m door-to-door versus 6h 21m for the train. However, the train produces 84% less CO2.

How much CO2 does the Nantes–Sierre/Siders train vs flight produce?

For the Nantes to Sierre/Siders route (699 km straight-line), the train produces approximately 28,7 kg of CO2 per passenger, while the flight produces approximately 178,2 kg. Taking the train saves 149,5 kg of CO2 — a 84% reduction. These are average estimates based on European averages (train: 41g CO2/km, flight: 255g CO2/km including radiative forcing).

What is the door-to-door travel time for train vs flight Nantes to Sierre/Siders?

Door-to-door travel time from Nantes to Sierre/Siders:

Train: 6h 21m total (5h 51m journey + 30 min station check-in)
Flight: 3h 20m total (50m flight + 2h 30min airport overhead for check-in, security, boarding, and taxi)

Is the Nantes to Sierre/Siders train worth it vs flying?

How far is Nantes from Sierre/Siders?

The straight-line distance from Nantes to Sierre/Siders is 699 km. The actual rail distance will be longer (typically ~1.3× the straight-line distance) due to track routing.