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ONT to BTM: distance & flight time
Ontario (Ontario International Airport) → Butte (Bert Mooney Airport)
865 mi
1,392 km · 752 nm
2h 21m
estimated nonstop flight time
+1h
time difference · heading north
See live ONT→BTM fares Phone-only fares on this route — call free
Flight time details
865 miles nonstop takes roughly 2h 21m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- BTM — Bert Mooney Airport · Butte, 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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Near BTM
- HLN · Helena Regional Airport51 mi away
- BZN · Gallatin Field66 mi away
- SMN · Lemhi County Airport88 mi away
- LVM · Mission Field100 mi away
Frequently asked questions
How far is ONT from BTM?
The flight distance from Ontario (ONT) to Butte (BTM) is 865 miles (1,392 km, 752 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to BTM?
A nonstop flight takes about 2h 21m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ONT to BTM?
Nonstop service on ONT–BTM depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 2h 21m nonstop estimate.
What is the time difference between Ontario and Butte?
Butte is 1 hour ahead of Ontario.
What is the cheapest way to fly from ONT to BTM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–BTM that never appear on search engines, with no booking fees.
Why are some ONT to BTM fares phone-only?
Consolidator contracts let us sell certain ONT–BTM tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.