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CCU to WBU: distance & flight time
Kolkata (Netaji Subhash Chandra Bose International Airport) → Boulder (Boulder Municipal Airport)
8,016 mi
12,901 km · 6,966 nm
16h 11m
estimated nonstop flight time
-11.5h
time difference · heading north
See live CCU→WBU fares Phone-only fares on this route — call free
Flight time details
8,016 miles nonstop takes roughly 16h 11m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.5-hour time set-back when reading arrival times on your ticket.
The two airports
- CCU — Netaji Subhash Chandra Bose International Airport · Kolkata, India
- WBU — Boulder Municipal Airport · Boulder, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near CCU
- JSR · Jessore Airport58 mi away
- RDP · Kazi Nazrul Islam Airport102 mi away
- IRD · Ishurdi Airport110 mi away
- BZL · Barisal Airport119 mi away
Near WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 mi away
Frequently asked questions
How far is CCU from WBU?
The flight distance from Kolkata (CCU) to Boulder (WBU) is 8,016 miles (12,901 km, 6,966 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CCU to WBU?
A nonstop flight takes about 16h 11m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Kolkata and Boulder?
Boulder is 11.5 hours behind Kolkata.
What is the cheapest way to fly from CCU to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CCU–WBU that never appear on search engines, with no booking fees.