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WBU to EFL: distance & flight time
Boulder (Boulder Municipal Airport) → Keffallinia (Kefallinia Airport)
6,039 mi
9,718 km · 5,247 nm
12h 18m
estimated nonstop flight time
+9h
time difference · heading northeast
See live WBU→EFL fares Phone-only fares on this route — call free
Flight time details
6,039 miles nonstop takes roughly 12h 18m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, United States
- EFL — Kefallinia Airport · Keffallinia, Greece
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 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
Near EFL
- ZTH · Zakynthos International Airport "Dionysios Solomos"33 mi away
- PYR · Andravida Air Base45 mi away
- GPA · Araxos Airport50 mi away
- AGQ · Agrinion Air Base57 mi away
Frequently asked questions
How far is WBU from EFL?
The flight distance from Boulder (WBU) to Keffallinia (EFL) is 6,039 miles (9,718 km, 5,247 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to EFL?
A nonstop flight takes about 12h 18m 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 Boulder and Keffallinia?
Keffallinia is 9 hours ahead of Boulder.
What is the cheapest way to fly from WBU to EFL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–EFL that never appear on search engines, with no booking fees.