Need help booking?
Unpublished phone-only deals available
WBU to ONT: distance & flight time
Boulder (Boulder Municipal Airport) → Ontario (Ontario International Airport)
797 mi
1,282 km · 692 nm
2h 12m
estimated nonstop flight time
-1h
time difference · heading southwest
See live WBU→ONT fares Phone-only fares on this route — call free
Flight time details
797 miles nonstop takes roughly 2h 12m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- WBU — Boulder Municipal Airport · Boulder, United States
- ONT — Ontario International Airport · Ontario, 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 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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Frequently asked questions
How far is WBU from ONT?
The flight distance from Boulder (WBU) to Ontario (ONT) is 797 miles (1,282 km, 692 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to ONT?
A nonstop flight takes about 2h 12m 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 Ontario?
Ontario is 1 hour behind Boulder.
What is the cheapest way to fly from WBU to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–ONT that never appear on search engines, with no booking fees.