Kolkata to Delhi is 1,500 km. The flight takes 2.5 hours. The Howrah Rajdhani takes 17 hours. This shouldn't even be a debate — but let's be honest about both.
Comparison
Verdict
- ✈️ Fly: 14+ hours saved. Default choice. Book 2-3 weeks early for ₹3,500
- 🚂 Rajdhani only if: Ultra-tight budget or you genuinely enjoy 17 hours on India's oldest Rajdhani
- 🌫️ Winter warning: Both cities fog-prone Dec-Jan — see our fog guide