Airport month record
LASJUN
Harry Reid International in June 2026
- Departures
- 13,704
- Month
- June 2026
- National, same month
- 74.3%
- Carriers
- 9
Historical statistics for June 2026, not live status or a forecast for this year’s June. For today’s conditions at LAS, see live FAA status.
LAS in June sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 4 points worse than the national rate of 74.3%. The late ones land about an hour behind schedule. That rests on 13,704 flights, of which Delta Air Lines flew 1,212 at 86.1% on time.
Delta Air Lines is the most reliable of the seven carriers covered here at 86.1% on time across 1,212 flights.
Key figures
On time
70.7%
Arrivals under 15 minutes late, of 13,544 completed departures
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
0.77%
Nationally in June: 1.65%
Whole year
76.9%
LAS across all twelve months
These figures cover 13,704 departures from Harry Reid International in June 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
June next to LAS's other months
Against LAS's own year, June ran 6 points worse than the twelve-month rate of 76.9%, which makes it number ten of twelve months, best first. Either side of it, May ran 74.1% on time and July 69.6%, so this month sits in line with its neighbours.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| 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 | 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 (this page) | 13,704 | 70.7% | 61 min | 0.77% | C+ |
| July 2026 | 14,315 | 69.6% | 63 min | 1.01% | C |
| August 2026 | 13,832 | 69.6% | 72 min | 0.95% | C+ |
Departure window
The best time of day to leave LAS in June
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 34 points, against 22 points between the best and worst carrier.
- 5am–8am2,282 flights89.1%
- 8am–11am2,505 flights83.8%
- 11am–2pm2,340 flights71.5%
- 2pm–5pm2,177 flights60.5%
- 5pm–8pm1,830 flights55.5%
- 8pm–5am2,570 flights60.4%
Scale runs 45% to 95%.
The 5pm–8pm window is where this operation falls apart: 55.5% on time, against 89.1% 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 8pm–5am window is the busiest, with 2,570 flights scheduled in it.
Across the week, Tuesday is the strongest day at 80.7% on time and Friday the weakest at 63.8%, a spread of 17 points.
Carrier by carrier
Which airlines ran best at LAS in June
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 86.1% of the time; Southwest Airlines manages 64.4%. Sample sizes sit next to every figure, because a two-point gap across 7,297 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 7,297 | 64.4% | 51 min | 0.55% | D+ |
| Frontier Airlines | 1,243 | 72.1% | 80 min | 2.17% | C |
| Delta Air Lines | 1,212 | 86.1% | 72 min | 0.17% | A+ |
| United Airlines | 1,150 | 73.6% | 75 min | 0.17% | C+ |
| American Airlines | 1,139 | 76.3% | 98 min | 2.28% | B |
| Allegiant Air | 596 | 84.6% | 64 min | 0.34% | B+ |
| Alaska Airlines | 579 | 77.3% | 65 min | 0.52% | B+ |
| JetBlue Airwaysthin sample | 302 | 77.3% | 78 min | 0.99% | B+ |
| SkyWest Airlinesthin sample | 186 | 84.3% | 100 min | 0.54% | B+ |
The spread between Delta and Southwest is 22 points, wide enough that it should decide the booking. On a hundred trips that is 22 more arrivals inside the on-time window.
Route by route
Busiest routes out of LAS in June
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| LAS to LAX · Los Angeles | 630 | 76.1% | 69 min | 0.48% | B+ |
| LAS to DEN · Denver | 581 | 71.4% | 76 min | 1.03% | C |
| LAS to SFO · San Francisco | 510 | 40.0% | 64 min | 0.39% | F+ |
| LAS to SEA · Seattle | 477 | 77.8% | 69 min | 0.21% | B+ |
| LAS to PHX · Phoenix | 475 | 70.6% | 54 min | 0.63% | C+ |
| LAS to ORD · Chicago | 395 | 75.3% | 114 min | 1.77% | B |
| LAS to SAN · San Diego | 391 | 53.9% | 56 min | 1.28% | F |
| LAS to ATL · Atlanta | 388 | 85.2% | 58 min | 0.26% | A+ |
| LAS to DFW · Dallas-Fort Worth | 382 | 68.0% | 119 min | 4.45% | C− |
| LAS to RNO · Reno | 369 | 71.7% | 58 min | 1.36% | C |
| LAS to SMF · Sacramentothin sample | 326 | 70.0% | 57 min | 0.92% | C+ |
| LAS to JFK · New Yorkthin sample | 317 | 78.8% | 76 min | 0.63% | B+ |
| LAS to SJC · San Josethin sample | 303 | 69.4% | 47 min | 0.66% | C+ |
| LAS to SLC · Salt Lake Citythin sample | 293 | 77.1% | 56 min | 0.00% | B+ |
| LAS to BUR · Burbankthin sample | 288 | 77.2% | 72 min | 1.04% | B |
| LAS to SNA · Santa Anathin sample | 286 | 75.2% | 67 min | 1.40% | B |
| LAS to OAK · Oaklandthin sample | 277 | 60.3% | 48 min | 0.00% | D+ |
| LAS to IAH · Houstonthin sample | 261 | 80.1% | 74 min | 1.15% | B |
| LAS to AUS · Austinthin sample | 250 | 64.7% | 51 min | 0.40% | D+ |
| LAS to PDX · Portlandthin sample | 250 | 72.8% | 55 min | 1.60% | C |
| LAS to DAL · Dallasthin sample | 235 | 59.0% | 47 min | 2.13% | D |
| LAS to EWR · Newarkthin sample | 213 | 81.8% | 85 min | 0.00% | B+ |
| LAS to ONT · Ontariothin sample | 206 | 65.9% | 54 min | 0.49% | C+ |
| LAS to MDW · Chicagothin sample | 200 | 64.0% | 56 min | 0.50% | D+ |
| LAS to BNA · Nashvillethin sample | 185 | 65.9% | 38 min | 0.00% | C+ |
Delay causes
What held LAS up in June
Late-arriving aircraft accounts for 48% of the 241,000 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Late-arriving aircraft
- 36%Carrier
- 14%National Airspace System
- 1%Extreme weather
- 0%Security
48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 241,000 reported delay minutes here, that single category outweighs weather by 38 to one. The split is drawn from 241,393 reported delay minutes.
Cancellations are rare at 0.77%, below the national 1.65% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
9.2% of arrivals land a full hour or more behind schedule, against 9.7% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
What to do with this
Flying from LAS in June
For a June trip through LAS: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 89.1% on time, and with 9.2% of arrivals an hour or more late, a connection here deserves more slack than the same trip in January would.
Related
Where to go next
- Harry Reid International (LAS), the whole year
- 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 March78.3%
- LAS in April78.8%
- LAS in May74.1%
- LAS in July69.6%
- LAS in August69.6%
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.