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EFL to DEN: distance & flight time
Keffallinia (Kefallinia Airport) → Denver (Denver International Airport)
6,029 mi
9,703 km · 5,239 nm
12h 17m
estimated nonstop flight time
-9h
time difference · heading northwest
See live EFL→DEN fares Phone-only fares on this route — call free
Flight time details
6,029 miles nonstop takes roughly 12h 17m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- EFL — Kefallinia Airport · Keffallinia, Greece
- DEN — Denver International Airport · Denver, 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 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
Near DEN
- BFK · Buckley Air Force Base12 mi away
- APA · Centennial Airport22 mi away
- BJC · Rocky Mountain Metropolitan Airport24 mi away
- WBU · Boulder Municipal Airport32 mi away
Frequently asked questions
How far is EFL from DEN?
The flight distance from Keffallinia (EFL) to Denver (DEN) is 6,029 miles (9,703 km, 5,239 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from EFL to DEN?
A nonstop flight takes about 12h 17m 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 Keffallinia and Denver?
Denver is 9 hours behind Keffallinia.
What is the cheapest way to fly from EFL to DEN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on EFL–DEN that never appear on search engines, with no booking fees.