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WBU to ILZ: distance & flight time
Boulder (Boulder Municipal Airport) → Žilina (Žilina Airport)
5,386 mi
8,667 km · 4,680 nm
11h 2m
estimated nonstop flight time
+8h
time difference · heading northeast
See live WBU→ILZ fares Phone-only fares on this route — call free
Flight time details
5,386 miles nonstop takes roughly 11h 2m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, United States
- ILZ — Žilina Airport · Žilina, Slovakia
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 ILZ
- OSR · Ostrava Leos Janáček Airport39 mi away
- SLD · Sliač Airport47 mi away
- UHE · Kunovice Airport55 mi away
- PZY · Piešťany Airport55 mi away
Frequently asked questions
How far is WBU from ILZ?
The flight distance from Boulder (WBU) to Žilina (ILZ) is 5,386 miles (8,667 km, 4,680 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to ILZ?
A nonstop flight takes about 11h 2m 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 Žilina?
Žilina is 8 hours ahead of Boulder.
What is the cheapest way to fly from WBU to ILZ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–ILZ that never appear on search engines, with no booking fees.