The Delhi to Kolkata route is one of India's busiest domestic air corridors, connecting the national capital and northern India's main aviation hub with the cultural capital of eastern India. Non-stop flights depart from Indira Gandhi International Airport (DEL) and arrive at Netaji Subhas Chandra Bose International Airport (CCU), with a flight time of around 2 hours 15 minutes. IndiGo operates the most frequent services on this route. One-way fares start from ₹5,021, though prices vary depending on the season, day of the week, and how far in advance you book. We track this route daily — check the price calendar below to find the cheapest dates.
Airlines on this route
Frequently Asked Questions
What is the cheapest month to fly from Delhi to Kolkata?
On this busy business route, June tends to see the lowest fares, starting from ₹5,021. Competition between 6 airlines keeps prices competitive, but booking 4-6 weeks in advance still makes a noticeable difference.
How much does a Delhi to Kolkata flight cost?
One-way flights from Delhi to Kolkata typically cost between ₹5,021 and ₹7,941. Prices vary by season, airline, and how far in advance you book. Use our price calendar to spot the cheapest dates.
Which airline is cheapest for Delhi to Kolkata flights?
With 6 carriers on this route, there's strong price competition. IndiGo and Air India generally have the lowest base fares, while Air India includes checked baggage and meals at a slightly higher price point. Budget carriers like Vistara run frequent sales worth watching.
How far in advance should I book Delhi to Kolkata flights?
This is a high-frequency business route, so fares fluctuate often. Booking 4-6 weeks in advance generally gets you the best price. Avoid booking on Sunday evenings when business travellers push prices up for Monday departures.
Are there direct flights from Delhi to Kolkata?
Yes, non-stop flights operate between Indira Gandhi International Airport and Netaji Subhas Chandra Bose International Airport. IndiGo runs the most frequent non-stop service, with a flight time of about 2 hours 15 minutes.
Related Pages
Track More Routes
We scan prices from 11 Indian cities every day. Use the route explorer to find cheap flights to 30+ destinations.
Last updated: April 2026