Airport month record
LASMAR
Harry Reid International in March 2026
- Departures
- 15,169
- Month
- March 2026
- National, same month
- 75.7%
- Carriers
- 10
Historical statistics for March 2026, not live status or a forecast for this year’s March. For today’s conditions at LAS, see live FAA status.
LAS in March lands a B, 3 points better than the national rate of 75.7%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 15,169 flights, of which Allegiant Air flew 606 at 87.6% on time.
Allegiant Air is the most reliable of the nine carriers covered here at 87.6% on time across 606 flights.
Key figures
On time
78.3%
Arrivals under 15 minutes late, of 14,941 completed departures
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
1.15%
Nationally in March: 2.90%
Whole year
77.9%
LAS across all twelve months
These figures cover 15,169 departures from Harry Reid International in March 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.
Against the year
March next to LAS's other months
Against LAS's own year, March ran level with the twelve-month rate of 77.9%, which makes it number eight of twelve months, best first. Either side of it, February ran 83.1% on time and April 78.8%, so a trip moved by a few weeks would have landed in a better stretch.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| July 2025 | 15,733 | 72.9% | 67 min | 1.13% | C |
| August 2025 | 14,920 | 79.6% | 59 min | 0.50% | B+ |
| September 2025 | 14,399 | 78.8% | 66 min | 0.53% | B+ |
| October 2025 | 15,597 | 77.1% | 62 min | 0.31% | B+ |
| November 2025 | 14,443 | 79.5% | 59 min | 1.73% | B |
| December 2025 | 14,547 | 79.9% | 59 min | 0.60% | B+ |
| January 2026 | 13,695 | 83.1% | 65 min | 1.86% | B |
| February 2026 | 12,886 | 83.1% | 58 min | 0.88% | B+ |
| March 2026 (this page) | 15,169 | 78.3% | 60 min | 1.15% | B |
| April 2026 | 14,672 | 78.8% | 54 min | 0.40% | B+ |
| May 2026 | 14,585 | 74.1% | 60 min | 0.67% | C+ |
| June 2026 | 13,704 | 70.7% | 61 min | 0.77% | C+ |
Departure window
The best time of day to leave LAS in March
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 18 points, against 17 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am2,487 flights89.7%
- 8am–11am2,891 flights84.1%
- 11am–2pm2,524 flights77.3%
- 2pm–5pm2,487 flights73.2%
- 5pm–8pm2,010 flights72.3%
- 8pm–5am2,770 flights71.5%
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 89.7% of the time, against 71.5% for the overnight window. That is 18 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 2,891 flights scheduled in it.
Across the week, Wednesday is the strongest day at 85.1% on time and Sunday the weakest at 73.1%. 12 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at LAS in March
The choice of carrier is not cosmetic here. Allegiant Air arrives on time 87.6% of the time; JetBlue Airways manages 70.5%. Sample sizes sit next to every figure, because a two-point gap across 445 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 7,556 | 74.1% | 47 min | 0.74% | C+ |
| Delta Air Lines | 1,413 | 86.9% | 73 min | 2.05% | A |
| United Airlines | 1,359 | 83.4% | 71 min | 0.81% | B+ |
| American Airlines | 1,221 | 79.9% | 105 min | 1.39% | B |
| Frontier Airlines | 1,098 | 81.4% | 79 min | 1.73% | B |
| Alaska Airlines | 716 | 84.3% | 68 min | 1.40% | B |
| Allegiant Air | 606 | 87.6% | 62 min | 0.33% | A+ |
| Spirit Airlines | 514 | 78.4% | 111 min | 4.67% | B− |
| JetBlue Airways | 445 | 70.5% | 65 min | 1.57% | C |
| SkyWest Airlinesthin sample | 241 | 80.1% | 54 min | 0.00% | B+ |
Spirit Airlines cancels 4.7% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Route by route
Busiest routes out of LAS in March
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| LAS to LAX · Los Angeles | 736 | 82.2% | 58 min | 0.95% | B+ |
| LAS to DEN · Denver | 665 | 77.1% | 66 min | 0.90% | B+ |
| LAS to PHX · Phoenix | 539 | 75.9% | 63 min | 0.74% | B+ |
| LAS to ORD · Chicago | 489 | 71.1% | 92 min | 3.07% | C− |
| LAS to SFO · San Francisco | 488 | 83.3% | 45 min | 0.41% | B+ |
| LAS to SEA · Seattle | 478 | 86.9% | 76 min | 2.51% | A |
| LAS to DFW · Dallas-Fort Worth | 465 | 83.4% | 106 min | 1.08% | B |
| LAS to SAN · San Diego | 459 | 68.2% | 51 min | 0.00% | C+ |
| LAS to ATL · Atlanta | 407 | 80.2% | 67 min | 1.97% | B |
| LAS to SNA · Santa Ana | 390 | 85.1% | 44 min | 1.79% | A |
| LAS to RNO · Reno | 385 | 82.7% | 58 min | 0.78% | B+ |
| LAS to BUR · Burbank | 377 | 86.7% | 52 min | 2.39% | A |
| LAS to SLC · Salt Lake Citythin sample | 343 | 84.4% | 51 min | 1.17% | B |
| LAS to IAH · Houstonthin sample | 323 | 77.7% | 108 min | 2.48% | B |
| LAS to SMF · Sacramentothin sample | 318 | 81.7% | 48 min | 0.31% | B+ |
| LAS to JFK · New Yorkthin sample | 299 | 75.7% | 80 min | 2.01% | B |
| LAS to SJC · San Josethin sample | 296 | 82.9% | 48 min | 1.01% | B |
| LAS to OAK · Oaklandthin sample | 285 | 75.5% | 55 min | 1.05% | B |
| LAS to EWR · Newarkthin sample | 279 | 78.8% | 55 min | 1.08% | B |
| LAS to AUS · Austinthin sample | 259 | 72.5% | 47 min | 0.39% | C+ |
| LAS to PDX · Portlandthin sample | 256 | 79.1% | 55 min | 1.17% | B |
| LAS to DAL · Dallasthin sample | 248 | 67.9% | 47 min | 2.02% | C |
| LAS to DTW · Detroitthin sample | 247 | 80.7% | 72 min | 0.81% | B+ |
| LAS to MSP · Minneapolisthin sample | 215 | 88.4% | 66 min | 3.26% | A− |
| LAS to MCO · Orlandothin sample | 210 | 67.8% | 69 min | 0.95% | C+ |
Delay causes
What held LAS up in March
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 196,000 reported delay minutes.
- 41%Late-arriving aircraft
- 40%Carrier
- 17%National Airspace System
- 2%Extreme weather
- 0%Security
41% 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 196,000 reported delay minutes here, that single category outweighs weather by 24 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 196,088 reported delay minutes.
Cancellations sit at 1.15% against a national 2.90%, which is ordinary. Diversions add another 0.35%.
6.3% of arrivals land an hour or more late, close to the national 9.5%. 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 about an hour, which a normal layover absorbs.
What to do with this
Flying from LAS in March
For a March trip through LAS: expect 78.3% on time and 1.15% cancelled, going by March 2026. The 5am–8am window was the strongest part of the day.
Related
Where to go next
- Harry Reid International (LAS), the whole year
- LAS in July72.9%
- LAS in August79.6%
- LAS in September78.8%
- LAS in October77.1%
- LAS in November79.5%
- LAS in December79.9%
- LAS in January83.1%
- LAS in February83.1%
- LAS in April78.8%
- LAS in May74.1%
- LAS in June70.7%
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.