How often are DFW to ONT flights on time?

Flights from Dallas-Fort Worth (DFW) to Ontario (ONT) arrive on time 76% of the time across 13,629 flights of official data.

Which airline is most reliable on the DFW to ONT route?

Frontier Airlines has the best on-time record on this route at 79% across 1,540 flights.

Route reliability

Flights from Dallas-Fort Worth to Ontario arrive on time 76% of the time across 13,629 flights. Here’s how each airline really performs.

0.0

On-time rate

13,629 flights

Airline	On-time	Flights
Frontier Airlines	79%	1,540
American Airlines	76%	12,089

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg ONT → DFW.

How to Pick a Reliable Flight (Not Just the Cheapest)

A practical checklist for booking the flight that gets you there — not just the cheap one.

Nonstop vs. Connecting Flights: The Reliability Trade-off

A stop multiplies the ways a trip can break. When it's worth it — and how to de-risk it.

Do Morning Flights Really Have Fewer Delays?

Yes — and there's a clear reason. How delays snowball through the day.

Are Some Airlines Really More Reliable Than Others?

The reliability gap between airlines is real — here's what actually drives it.

Score real DFW–ONT flights on reliability, weather, and connection safety — not just price.