PlainFlights

Route · LAS → ONT · 2020–2025 BTS data

Las Vegas to Ontario

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), LAS to ONT (Las Vegas to Ontario) ranks #837 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

77.1%
On-time
-1.9 pts
vs US avg
58 min
Delay when late
12,667
Flights
#837 of 4927
Corpus placement

Cancelled

0.6%

Best Month

Nov 2024 89%

Worst Month

Oct 2025 69%

Distance

197 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 207 49 2 0 WN,F9
Nov 2025 216 56 10 0 F9,WN
Oct 2025 228 71 0 0 WN,F9
Sep 2025 201 45 0 0 WN,F9
Aug 2025 203 39 1 0 WN,F9
Jul 2025 215 59 2 0 WN,F9
Jun 2025 211 55 1 0 WN,F9
May 2025 224 45 1 0 WN,F9
Apr 2025 222 34 1 0 F9,WN
Mar 2025 219 39 1 0 WN,F9
Feb 2025 191 36 1 0 WN,F9
Jan 2025 222 31 3 1 WN,F9
Dec 2024 224 31 0 0 F9,WN
Nov 2024 242 26 0 0 WN,F9
Oct 2024 264 37 0 0 WN,F9
Sep 2024 240 57 2 0 WN,F9
Aug 2024 232 49 1 0 F9,WN
Jul 2024 247 72 1 1 F9,WN
Jun 2024 237 52 5 0 F9,WN
May 2024 236 67 1 0 F9,WN
Apr 2024 225 54 0 0 F9,WN
Mar 2024 224 65 0 0 F9,WN
Feb 2024 182 29 1 0 F9,WN
Jan 2024 197 26 0 0 F9,WN

LAS–ONT seasonal on-time pattern

Best: January (84.4%) · weakest: June (71.7%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 78.5%

Strongest calendar month

January

84.4% on-time · ~163 flights/mo

Busiest calendar month

October

~200 flights/mo avg

Weakest calendar month

June

71.7% on-time · ~176 flights/mo

Cancellation Rate

0.6%

34 of 5,309 flights

Diversion Rate

0.0%

2 of 5,309 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

LAS - Las Vegas

Full on-time, delay-cause, and seasonal performance for Las Vegas, NV.

LAS on-time profile

ONT - Ontario

Full on-time, delay-cause, and seasonal performance for Ontario, CA.

ONT on-time profile

Compare the two airports

See LAS and ONT side by side on delays, cancellations, and reliability.

Compare LAS vs ONT

Origin-hub reliability standing

Mid-pack among LAS departures

From LAS, this corridor sits with 71 other 75–85% on-time routes out of 83 tracked departures, not the hub's reliability leaders (2 at ≥85%) and not the softest ( 10 below 75%). Destination: Ontario · fleet on-time rank #4069 of 4927.

What the Data Says About LAS to ONT

The Las Vegas to Ontario corridor (LAS to ONT) posts a 77.1% on-time rate on the lower edge of the average band, based on 12,667 tracked flights. Late flights run 58.4 minutes behind on average. 3 carriers cover the 197-mile route; over the last 24 months, 34 of 5,309 flights were cancelled (0.6%) and 0.0% diverted.

The monthly split is wide on this route: Nov 2024 posted the strongest performance at 89% on-time, while Oct 2025 came in at just 69% - a 20-point swing worth factoring into travel timing.

On the multi-year calendar, LAS–ONT peaks in January at 84.4% on-time while October carries the heaviest traffic (~200 flights per month) ; the softest month is June at 71.7%, a 12.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does LAS to ONT rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, LAS to ONT ranks #837 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from LAS to ONT? ▼
Flights from Las Vegas to Ontario have a 77.1% on-time rate based on 12,667 flights. The average delay is 58.4 minutes. The best recent month was Nov 2024 with 89% on-time.
What is the cancellation rate for LAS to ONT? ▼
Over the last 24 months, 0.6% of flights on this route were cancelled (34 of 5,309 flights) and 0.0% were diverted.
How far is the flight from LAS to ONT? ▼
The flight distance from Las Vegas (LAS) to Ontario (ONT) is approximately 197 miles. This route is served by 3 carriers.
When is the best time to fly from LAS to ONT? ▼
The best recent month for on-time performance was Nov 2024 (89% on-time). The worst was Oct 2025 (69% on-time). Consider booking during months with historically better performance.

Airports on this route

LAS Airport

Las Vegas
ONT Airport

Ontario
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using LAS–ONT data

LAS–ONT is mid-pack at 77.1% on-time; month and carrier mix move more than the corridor headline.

  • Compare LAS and ONT airport profiles: delay causes and top routes differ even on the same corridor. LAS airport
  • If your dates flex, January (84.4% on-time) beats June (71.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 77.1% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.