Carrier route record
WNLAS→BUR
Southwest Airlines · Las Vegas to Burbank
- Flights
- 3,163
- Period
- July 2025 to June 2026
- Share of route
- 76%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Southwest Airlines.
Southwest on LAS to BUR lands a B, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by roughly 55 minutes on average. That is a workable record, not a spotless one. That rests on 3,163 flights, with a median arrival 6 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Southwest on LAS to BUR from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.6%
Arrivals under 15 minutes late, of 3,122 completed flights
Avg delay
54 min
Across delayed arrivals only, not all flights
Cancelled
1.07%
National rate is 1.81%
Whole route
79.8%
Every carrier on LAS to BUR, 4,185 flights
These figures cover 3,163 flights between July 2025 and June 2026. The median arrival is 6 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
Southwest against every carrier on LAS to BUR
Southwest flew 3,163 of the 4,185 flights on LAS to BUR, most of the route. Its 77.6% on time is 2 points worse than the route as a whole, which runs 79.8%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Spirit at 87.6% to Southwest at 77.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlines | 909 | 87.6% | 75 min | 2.31% | A |
| Frontier Airlinesthin sample | 113 | 81.2% | 111 min | 0.88% | B+ |
| Southwest Airlines (this page) | 3,163 | 77.6% | 54 min | 1.07% | B |
Departure window
When Southwest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 27 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am436 flights91.5%
- 8am–11am610 flights86.4%
- 11am–2pm545 flights79.8%
- 2pm–5pm632 flights70.4%
- 5pm–8pm564 flights72.4%
- 8pm–5am376 flights64.2%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 64.2% on time, against 91.5% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 2pm–5pm window is the busiest, with 632 flights scheduled in it.
Across the year
Southwest on LAS to BUR through the year
Delays peak in October, when the on-time rate falls to 67.4%. March is the strongest month at 85.4%. Moving a flexible trip across that boundary buys 18 points. May was the busiest month here, with 277 flights.
Across the week, Wednesday is the strongest day at 84.6% on time and Sunday the weakest at 70.5%. 14 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Southwest runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 51% of the 37,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 51%Late-arriving aircraft
- 34%Carrier
- 14%National Airspace System
- 1%Extreme weather
51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 37,000 reported delay minutes here, that single category outweighs weather by 37 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 37,400 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 91.5% on time here.
Cancellations sit at 1.07% against a national 1.81%, which is ordinary. Diversions add another 0.22%.
Connections and stage length
What a delay here costs
6.7% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 55 minutes, which a normal layover absorbs.
At 223 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 80.6% on time across 3,180 flights, 3 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 3 points of difference.
The sample behind these figures is 3,163 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking Southwest on LAS to BUR
Put together: the calendar is the biggest lever here, not the carrier or the hour. March runs 85.4% on time and October 67.4%, a swing of 18 points. If the dates move at all, move them out of October before you think about anything else. 3,122 completed flights over 12 months sit behind that.
Related
Where to go next
- LAS to BUR, every carrier
- Southwest on BUR to LAS, the return leg
- Spirit Airlines on LAS to BUR87.6%
- Frontier Airlines on LAS to BUR81.2%
- Southwest Airlines network-wide record
- Harry Reid International (LAS) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.