Delhi to Kolkata Flights
Book Delhi to Kolkata flights with OnlyOnTrip. Compare live fares across airlines, pick your seats and meals, and pay securely — zero booking fee.
About Delhi to Kolkata flights
Flights from Delhi to Kolkata are among the most-searched routes on OnlyOnTrip. We pull live fares in real time directly from airlines — IndiGo, Air India, SpiceJet, and Akasa Air — so you always see real, bookable prices, never stale estimates. Use the fare calendar above to find the best day to fly on this route.
Airlines on this route
Multiple carriers operate the Delhi–Kolkata sector. Which airlines fly this route, how frequently they depart, and whether direct flights are available depends on the travel date — the live search above shows real inventory. Connecting itineraries via hub airports like Mumbai, Delhi, Hyderabad, or Bangalore are also available and can be significantly lower than direct fares on certain dates.
When to book for the best fares
Fares on the Delhi–Kolkata route fluctuate based on demand, season, and how far in advance you book. As a general rule, booking 3–6 weeks before your travel date gives the best balance of availability and price. Mid-week departures (Tuesday and Wednesday) are usually 10–20% lower than Friday evening and Sunday afternoon flights, which are in high demand with working professionals. Early morning (5 am–8 am) and late night (9 pm onwards) flights are typically lower than peak-hour slots.
Flight duration
Non-stop flight duration from Delhi to Kolkata depends on the specific airports, aircraft type, and air traffic conditions on the day. Most direct domestic sectors in India range from 1 hour to 3 hours in the air. One-stop connecting itineraries add transit time at the hub airport and may take 4–7 hours total but are often available at a lower price.
Zero booking fee — what it means
OnlyOnTrip charges ₹0 convenience fee on every flight booking — domestic or international — regardless of the payment method you use. Most competing platforms charge ₹100–₹450 per passenger as a convenience or service fee on top of the advertised fare. On a family trip with four passengers, this alone saves you ₹400–₹1,800 per booking. You also get free seat selection and free meal selection (where the airline supports it) at checkout, with no upsell screens or hidden extras.
Baggage allowance
On domestic Indian routes, IndiGo, SpiceJet, and Akasa Air include 15 kg check-in baggage and 7 kg cabin baggage as standard on most fare types. Air India typically includes 15–25 kg check-in depending on the ticket class. Excess baggage fees are significant at the airport check-in counter (₹350–₹600 per kg) — if you anticipate needing extra weight, pre-purchase additional baggage on OnlyOnTrip before departure for a much lower per-kg rate. Cabin baggage must fit in the overhead bin (55 cm × 35 cm × 25 cm), and all airlines enforce the 7 kg limit at the gate.
Why book with OnlyOnTrip
- Live fares across 430+ airlines — domestic and international — updated in real time
- Zero convenience fee on all bookings, regardless of payment method
- Free seat and meal selection at checkout; instant e-ticket via email and SMS
- Fare calendar to compare fares across two months at a glance
- One-click round-trip booking with combined pricing and single checkout
- 24/7 customer support via phone, email, and WhatsApp for changes and cancellations
- Transparent refund tracking — know exactly when your money comes back
Frequently asked questions
Fares change daily. Search above to see today's live prices for this route.
Book 3–6 weeks in advance, choose mid-week departures (Tuesday or Wednesday), and use the lowest-fares strip above to compare prices across the next two months at a glance. Flexible date travellers save the most.
No. OnlyOnTrip charges ₹0 convenience fee on all flights — domestic or international, any airline, any payment method. The price you see is exactly what you pay.
Yes. Cancellations and date changes are processed based on the airline's fare rules. Log in to Manage Booking on OnlyOnTrip to cancel or change your ticket. Refunds are tracked in real time and typically credited within 5–7 business days for cancellable fares.
For domestic flights, arrive at least 90 minutes before departure to allow time for check-in, baggage drop, and security. Web check-in opens 48 hours before departure on IndiGo, Air India, SpiceJet, and Akasa Air — use it to skip the counter queue.