LAS → SAN Flight Reliability

Right now

Origin · LASNo disruption reported

Aviation weather is not currently a factor.

Updated 08:56 UTC

Las Vegas airport profile →

Destination · SANNo disruption reported

Aviation weather is not currently a factor.

Updated 08:51 UTC

San Diego airport profile →

Route reliability

July 2023 – July 2026

Route Reliability Score

53/ 100Fair

Better than 21% of comparable major US routes (4,598 compared)

Calculated from 20,221 flights. How this is calculated

On-time arrivals

69.0%

13,779 of 19,976

Cancellation rate

1.09%

221 cancelled

Median arrival delay

1 min

Average 12.9 min

Severe delays

9.0%

60+ minutes late

Delay when late

56 min

Average, when 15+ min late

Flights analyzed

20,221

4 carriers

LAS → SAN arrives on time 69.0% of the time; the return trip, SAN → LAS, arrives on time 75.2% of the time, a 6.2-point gap between the two directions of the same city pair.

LAS → SAN spends 28.0 minutes on the ground on a 258-mile trip: 22.6 minutes from pushback to wheels-up at LAS and 5.4 minutes from touchdown to gate at SAN.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026

What stands out

Which day you fly matters unusually much here, a wider weekday spread than 99% of 4,467 comparable routes.

79.5% on time on a typical Tuesday, against 60.6% on a Friday.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,467 in the comparison.

Why LAS → SAN flights are cancelled

July 2023 – July 2026

LAS → SAN cancelled 221 of 20,221 scheduled flights — about 1 in every 91. The reason filed most often was extreme weather, 49.3% of the cancellations coded on this route — about 1 in every 186 scheduled flights.

Share of cancellations

Weather49.3%

Air traffic27.6%

Airline23.1%

Security0.0%

Of 221 cancelled departures carrying a reason code.

What each reason means

Extreme weather1 in 186

Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.

109 cancellations, 49.3% of the total.

The air traffic system1 in 331

Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.

61 cancellations, 27.6% of the total.

The airline1 in 396

Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.

51 cancellations, 23.1% of the total.

Security—

A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.

0 cancellations, 0.0% of the total.

Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.

221 coded cancellations were recorded on LAS → SAN; the section appears from 50.

When it goes wrong

July 2023 – July 2026

One arrival in ten is worse than

55 min late

against a median of 1 min late

Arrived an hour or more late9.0%

Typical delay when late56 min

Cancelled1.09%

Landed somewhere else0.12%

Percentiles over 20,221 operations; cancelled and diverted flights are counted separately.

Will your connection be tight enough?

Layovers at SAN after arriving from LAS.

Connection buffer and chance of missing by layover length, LAS → SAN arrivals
Connection time	Chance of missing	Reads as
30 min	50%	Likely to miss
45 min	30%	Likely to miss
60 min	19%	High risk
90 min	8.9%	Some risk
120 min	4.7%	Low risk

This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.09% of the time and diverts 0.12% of the time, which a late arrival never shows up in.

Chance of missing is the share of 19,976 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.

The worst tenth of arrivals on this route land at least 55 minutes late (90th-percentile gate arrival delay), over 20,221 operations.

Any other layover length: connection checker.

Best time to fly

LAS → SAN flights departing 5–9 AM arrived on time 82.4% of the time, against 57.6% for 6–9 PM departures, a gap of 24.8 percentage points.

By day and hour

On-time arrival rate for each weekday and scheduled departure hour, in local time at the departure airport (LAS).

Hour of departure and day of the week matter about equally: hourly averages sit a typical 8.9 points from the route-wide rate, weekday averages 7.8 points.

On-time arrival rate for LAS to SAN by weekday and scheduled departure hour, local time. Each button reads out one slot.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
6 AM–7 AM
7 AM–8 AM
8 AM–9 AM
9 AM–10 AM
10 AM–11 AM
11 AM–12 PM
12 PM–1 PM
1 PM–2 PM
2 PM–3 PM
3 PM–4 PM
4 PM–5 PM
5 PM–6 PM
6 PM–7 PM
7 PM–8 PM
8 PM–9 PM
9 PM–10 PM
10 PM–11 PM

On-time rate, % · stronger color, fewer on time

30–39
40–49
50–59
60–69
70–79
80–89
90–99

Fewer than 120 flights, not scored

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.

No slot is named best or worst: too few reach 500 flights. Departures before 6 AM and after 11 PM (217 flights) are not drawn: no slot in those hours has enough flights to score.

View as tableHide table

On-time arrival rate (%) with flights beneath, by scheduled departure hour and weekday for LAS to SAN. A dash means fewer than 120 flights, which are not scored.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
6 AM–7 AM	89.0% on time184 flights	95.5% on time158 flights	90.9% on time186 flights	89.4% on time180 flights	89.9% on time193 flights	89.9% on time139 flights	86.2% on time153 flights
7 AM–8 AM	82.0% on time270 flights	83.1% on time204 flights	86.5% on time207 flights	78.5% on time273 flights	77.7% on time270 flights	84.9% on time187 flights	76.4% on time260 flights
8 AM–9 AM	70.1% on time234 flights	83.3% on time210 flights	83.3% on time217 flights	73.7% on time208 flights	67.8% on time236 flights	83.0% on time184 flights	79.6% on time246 flights
9 AM–10 AM	73.9% on time179 flights	77.6% on time147 flights	82.4% on time153 flights	70.2% on time179 flights	68.2% on time173 flights	78.5% on time149 flights	72.8% on time182 flights
10 AM–11 AM	59.5% on time212 flights	72.7% on time220 flights	71.8% on time215 flights	65.7% on time217 flights	60.8% on time208 flights	79.7% on time159 flights	61.0% on time231 flights
11 AM–12 PM	59.7% on time202 flights	80.2% on time126 flights	76.4% on time124 flights	61.9% on time199 flights	53.3% on time199 flights	78.7% on time127 flights	56.8% on time202 flights
12 PM–1 PM	64.0% on time187 flights	82.2% on time191 flights	78.2% on time181 flights	65.0% on time203 flights	57.9% on time195 flights	81.0% on time174 flights	62.7% on time202 flights
1 PM–2 PM	65.0% on time141 flights	78.3% on time129 flights	116 flights, too few to score	62.7% on time135 flights	57.7% on time137 flights	71 flights, too few to score	55.0% on time142 flights
2 PM–3 PM	61.7% on time182 flights	76.6% on time143 flights	77.6% on time158 flights	62.5% on time170 flights	58.8% on time178 flights	105 flights, too few to score	64.9% on time173 flights
3 PM–4 PM	64.0% on time139 flights	74.8% on time143 flights	73.9% on time134 flights	53.0% on time136 flights	53.7% on time122 flights	113 flights, too few to score	54.5% on time121 flights
4 PM–5 PM	58.4% on time233 flights	78.4% on time200 flights	81.0% on time201 flights	51.1% on time232 flights	53.6% on time236 flights	76.8% on time199 flights	66.5% on time241 flights
5 PM–6 PM	64.7% on time192 flights	74.7% on time186 flights	75.1% on time183 flights	48.7% on time197 flights	44.0% on time195 flights	66.8% on time188 flights	50.2% on time224 flights
6 PM–7 PM	60.8% on time155 flights	79.9% on time135 flights	67.9% on time133 flights	45.1% on time169 flights	39.3% on time150 flights	71.0% on time134 flights	42.0% on time144 flights
7 PM–8 PM	58.5% on time202 flights	70.9% on time148 flights	65.1% on time151 flights	42.9% on time203 flights	45.2% on time198 flights	70.8% on time120 flights	42.5% on time211 flights
8 PM–9 PM	66.2% on time133 flights	78.3% on time144 flights	67.1% on time141 flights	57.6% on time121 flights	53.1% on time132 flights	56 flights, too few to score	37.6% on time135 flights
9 PM–10 PM	66.7% on time142 flights	106 flights, too few to score	111 flights, too few to score	58.5% on time139 flights	63.6% on time172 flights	83 flights, too few to score	57.4% on time193 flights
10 PM–11 PM	119 flights, too few to score	53 flights, too few to score	48 flights, too few to score	59.3% on time126 flights	105 flights, too few to score	58 flights, too few to score	104 flights, too few to score

By departure window

5–9 AM82.4%

9 AM–12 PM68.5%

12–3 PM68.3%

3–6 PM63.5%

6–9 PM57.6%

9 PM–5 AM68.1%

By departure hour

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Why LAS → SAN runs late

July 2023 – July 2026

Late-arriving aircraft35.0%

the inbound aircraft was late, so this flight started late

The airline31.7%

crew, maintenance, boarding and fueling, all within the carrier’s control

Air traffic control29.2%

airspace and airport capacity, including weather-driven flow control

Weather4.0%

weather severe enough to stop this flight specifically

Security0.1%

screening or terminal security incidents

Share of the delay minutes US DOT attributed to each cause for LAS → SAN. Only delays of 15 minutes or more are attributed.

Late-arriving aircraft is the largest cause on LAS → SAN, at 35.0%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 82.4% of the time and 6–9 PM departures 57.6%.

How this route holds up in bad weather

July 2023 – July 2026

Bad weather raises cancellations by a similar amount at both ends of LAS to SAN: 2.4 times the normal rate at LAS and 3.5 times at SAN. Cancelled in bad weather against normal hours: LAS 2.0% against 0.8%, SAN 3.5% against 1.0%. Flights that did leave LAS in bad weather arrived on time 58.5% of the time, against 78.5% in normal hours.

Bad weather and normal hours at the airports

Scheduled departures, July 2023 – July 2026

Departures from LAS and SAN in hours of bad weather and in normal hours
Departures from	LAS	SAN
Cancelled in bad weather	2.0%	3.5%
Cancelled in normal hours	0.8%	1.0%
Arrived on time, bad weather	58.5%	66.7%
Arrived on time, normal hours	78.5%	78.4%
Departures in bad weather	14,522	19,707

Spirit Airlines (3.8% cancelled against 2.3% for the other carriers at LAS) and Frontier Airlines (4.0% cancelled against 1.8% for the other carriers at LAS) cancelled more departures from LAS in bad weather than the other carriers there did in the same months. None of the route’s other carriers was clearly better. One more carrier flies this route but has too few bad-weather departures from LAS to compare.

This route’s airlines in bad weather at LAS

All departures from LAS

Cancellation rates in bad weather at LAS for the airlines that fly LAS to SAN, against the other carriers at LAS in the same months
Airline	Bad-weather departures	Cancelled	Other carriers
Southwest Airlines	6,925	2.0%about level	2.1%
Spirit Airlines	1,398	3.8%above the others	2.3%
Frontier Airlines	943	4.0%above the others	1.8%

These are airport figures, not route figures: every scheduled departure from LAS and SAN, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from LAS on every route.

Weather source and limits. In full: LAS (airlines), SAN, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.

Airlines on this route

Carriers with at least 200 flights, by the airline that operated each one.

Airlines on this route
Carrier	Flights	On time	Cancelled	Median delay	Severe
Southwest Airlines	12,086	66.9%	1.07%	3 min	8.5%
SkyWest Airlines	3,689	69.4%	1.19%	0 min	11.0%
Spirit Airlines	2,866	78.0%	0.84%	-7 min	6.6%
Frontier Airlines	1,566	67.2%	1.53%	-1 min	12.9%

Southwest Airlines flew 59.8% of the 20,207 flights listed.

Spirit Airlines arrived on time 11.1 percentage points more often than Southwest Airlines on this route.

Flights on this route

Flight numbers with at least 600 operations here and still on the schedule.

Flights on this route
Flight	Scheduled	Operations	On time
OO3741 SkyWest Airlines	5:45 PM	751	71.8%

Weekly and seasonal patterns

By day of week

Mon67.1%

Tue79.5%

Wed78.1%

Thu62.6%

Fri60.6%

Sat78.5%

Sun61.9%

Tuesday is historically the most reliable day and Friday the least, a gap of 18.9 percentage points.

By month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

July is historically the weakest month and January the strongest, a spread of 17.9 percentage points.

Reliability over time

July 2023 – July 2026

24

25

26

Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 65.1% against 69.7% in the 12 months before — declining by 4.6 percentage points.

Data and methodology

Calculated by FlyerIntel from 20,221 LAS → SAN flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.

Full methodology · Data sources · Report a problem

Analysis last recomputed September 26, 2026

LAS airport SAN airport Return direction SAN → LAS

LAS→SAN

Right now

Route reliability

What stands out

Why LAS → SAN flights are cancelled

Share of cancellations

What each reason means

When it goes wrong

Will your connection be tight enough?

Best time to fly

By day and hour

By departure window

By departure hour

Why LAS → SAN runs late

How this route holds up in bad weather

Bad weather and normal hours at the airports

This route’s airlines in bad weather at LAS

Airlines on this route

Flights on this route

Weekly and seasonal patterns

By day of week

By month

Reliability over time

Data and methodology