11 Key Differences Between IndiGo, SpiceJet, and Vistara

6. Route network and international connectivity

Route coverage matters for door-to-door convenience. IndiGo connects 100+ destinations with a broad domestic footprint and growing international points, making it the go-to for point-to-point travel across India. SpiceJet serves roughly 64 destinations, balancing domestic reach with some international routes, while Vistara’s network was near 41 destinations (about 30 domestic and 11 international), concentrating on premium trunk routes and selected global links (Spherical Insights, Aviation A2Z). For someone flying from North America into a major entry city—Mumbai, Delhi, Bengaluru—IndiGo’s frequency gives flexibility for onward domestic legs. Vistara’s international choices tend to focus on premium services and routes where it can offer business-class continuity, which appeals to travellers who want a consistent cabin experience across connecting sectors. SpiceJet may serve regional airports that larger carriers don’t cover, which is helpful if your final destination is a smaller city. When booking, match the network to your itinerary: more destinations and frequencies reduce connection risk, while targeted international links can simplify transfers for premium travellers.