FlyerIntel

Route profile

LAS→ATL

Flight reliability, delays and best times to fly from Las Vegas to Atlanta, 1,747 miles.

Right now

Origin · LASNo disruption reported

Aviation weather is not currently a factor.

Updated

Las Vegas airport profile →

Destination · ATLNo disruption reported

Aviation weather is not currently a factor.

Updated

Atlanta airport profile →

Route reliability

July 2023 – July 2026

Route Reliability Score
74/ 100Good

Better than 73% of comparable major US routes (4,598 compared)

Calculated from 15,357 flights. How this is calculated

On-time arrivals
82.4%
12,476 of 15,132
Cancellation rate
1.03%
158 cancelled
Median arrival delay
-7 min
Average 3.6 min
Severe delays
5.4%
60+ minutes late
Delay when late
69 min
Average, when 15+ min late
Flights analyzed
15,357
4 carriers

LAS → ATL arrives on time 82.4% of the time; the return trip, ATL → LAS, arrives on time 74.7% of the time, a 7.7-point gap between the two directions of the same city pair.

LAS → ATL spends 26.9 minutes on the ground on a 1,747-mile trip: 17.4 minutes from pushback to wheels-up at LAS and 9.5 minutes from touchdown to gate at ATL.

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

Why LAS → ATL flights are cancelled

July 2023 – July 2026

LAS → ATL cancelled 158 of 15,357 scheduled flights — about 1 in every 97. The reason filed most often was the airline, 56.3% of the cancellations coded on this route — about 1 in every 173 scheduled flights.

Share of cancellations

Airline56.3%
Weather42.4%
Air traffic1.3%
Security0.0%

Of 158 cancelled departures carrying a reason code.

What each reason means

The airline1 in 173

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

89 cancellations, 56.3% of the total.

Extreme weather1 in 229

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

67 cancellations, 42.4% of the total.

The air traffic system1 in 7,679

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

2 cancellations, 1.3% 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.

158 coded cancellations were recorded on LAS → ATL; the section appears from 50.

When it goes wrong

July 2023 – July 2026

One arrival in ten is worse than

33 min late

against a median of 7 min early

Arrived an hour or more late5.4%
Typical delay when late69 min
Cancelled1.03%
Landed somewhere else0.44%

Percentiles over 15,357 operations; cancelled and diverted flights are counted separately.

Will your connection be tight enough?

Layovers at ATL after arriving from LAS.

Connection buffer and chance of missing by layover length, LAS → ATL arrivals
Connection timeChance of missingReads as
30 min34%Likely to miss
45 min17%High risk
60 min11%Some risk
90 min5.2%Some risk
120 min3.2%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 1.03% of the time and diverts 0.44% of the time, which a late arrival never shows up in.

Chance of missing is the share of 15,132 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 33 minutes late (90th-percentile gate arrival delay), over 15,357 operations.

Any other layover length: connection checker.

Best time to fly

LAS → ATL flights departing 5–9 AM arrived on time 90.4% of the time, against 62.3% for 6–9 PM departures, a gap of 28.1 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 matters more than day of the week: hourly averages sit a typical 6.1 points from the route-wide rate, weekday averages 3.4 points.

On-time arrival rate for LAS to ATL by weekday and scheduled departure hour, local time. Each button reads out one slot.
HourMondayTuesdayWednesdayThursdayFridaySaturdaySunday
12 AM–1 AM
1 AM–2 AM
2 AM–3 AM
3 AM–4 AM
4 AM–5 AM
5 AM–6 AM
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
11 PM–12 AM

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

  • 70–74
  • 75–79
  • 80–84
  • 85–89
  • 90–94
  • 95–99
  • 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.

View as tableHide table
On-time arrival rate (%) with flights beneath, by scheduled departure hour and weekday for LAS to ATL. A dash means fewer than 120 flights, which are not scored.
HourMondayTuesdayWednesdayThursdayFridaySaturdaySunday
12 AM–1 AM70.6% on time130 flights81.8% on time122 flights113 flights, too few to score114 flights, too few to score79.2% on time122 flights81.0% on time125 flights115 flights, too few to score
1 AM–2 AM0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score
2 AM–3 AM0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score
3 AM–4 AM0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score
4 AM–5 AM0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score
5 AM–6 AM28 flights, too few to score21 flights, too few to score21 flights, too few to score30 flights, too few to score30 flights, too few to score5 flights, too few to score34 flights, too few to score
6 AM–7 AM92.4% on time242 flights95.9% on time197 flights93.9% on time199 flights93.6% on time234 flights92.4% on time240 flights93.9% on time200 flights93.1% on time235 flights
7 AM–8 AM92.2% on time181 flights91.8% on time209 flights93.8% on time211 flights88.3% on time179 flights92.0% on time183 flights91.8% on time199 flights87.8% on time193 flights
8 AM–9 AM112 flights, too few to score101 flights, too few to score99 flights, too few to score105 flights, too few to score113 flights, too few to score99 flights, too few to score95 flights, too few to score
9 AM–10 AM111 flights, too few to score89.1% on time138 flights91.5% on time130 flights114 flights, too few to score113 flights, too few to score87.9% on time126 flights116 flights, too few to score
10 AM–11 AM86 flights, too few to score96 flights, too few to score89 flights, too few to score89 flights, too few to score85 flights, too few to score91 flights, too few to score103 flights, too few to score
11 AM–12 PM117 flights, too few to score85.9% on time135 flights89.6% on time134 flights82.8% on time131 flights117 flights, too few to score78.3% on time133 flights76.9% on time134 flights
12 PM–1 PM72.9% on time181 flights80.4% on time164 flights89.0% on time157 flights73.6% on time181 flights70.8% on time177 flights81.4% on time163 flights70.7% on time169 flights
1 PM–2 PM104 flights, too few to score91 flights, too few to score100 flights, too few to score91 flights, too few to score98 flights, too few to score117 flights, too few to score87 flights, too few to score
2 PM–3 PM79.6% on time157 flights88.3% on time145 flights81.8% on time150 flights72.5% on time154 flights76.3% on time161 flights84.4% on time154 flights75.2% on time164 flights
3 PM–4 PM19 flights, too few to score23 flights, too few to score23 flights, too few to score14 flights, too few to score15 flights, too few to score45 flights, too few to score24 flights, too few to score
4 PM–5 PM74 flights, too few to score70 flights, too few to score73 flights, too few to score69 flights, too few to score73 flights, too few to score47 flights, too few to score58 flights, too few to score
5 PM–6 PM118 flights, too few to score102 flights, too few to score105 flights, too few to score110 flights, too few to score112 flights, too few to score82 flights, too few to score112 flights, too few to score
6 PM–7 PM33 flights, too few to score14 flights, too few to score17 flights, too few to score36 flights, too few to score39 flights, too few to score14 flights, too few to score37 flights, too few to score
7 PM–8 PM0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score
8 PM–9 PM0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score0 flights, too few to score3 flights, too few to score0 flights, too few to score
9 PM–10 PM37 flights, too few to score27 flights, too few to score25 flights, too few to score30 flights, too few to score35 flights, too few to score29 flights, too few to score34 flights, too few to score
10 PM–11 PM86.3% on time165 flights105 flights, too few to score112 flights, too few to score82.0% on time174 flights82.8% on time171 flights88.5% on time123 flights79.3% on time167 flights
11 PM–12 AM77.1% on time366 flights85.5% on time346 flights86.6% on time369 flights74.0% on time383 flights77.2% on time369 flights79.8% on time361 flights71.3% on time379 flights

By departure window

5–9 AM90.4%
9 AM–12 PM84.1%
12–3 PM78.2%
3–6 PM77.5%
6–9 PM62.3%
9 PM–5 AM80.1%

By departure hour

  • 12 AM: 81.4% on time from 841 flights
  • 1 AM to 4 AM: too few flights to score
  • 5 AM: 93.5% on time from 169 flights
  • 6 AM: 93.5% on time from 1,547 flights
  • 7 AM: 91.1% on time from 1,355 flights
  • 8 AM: 81.7% on time from 724 flights
  • 9 AM: 86.2% on time from 848 flights
  • 10 AM: 83.5% on time from 639 flights
  • 11 AM: 82.6% on time from 901 flights
  • 12 PM: 76.7% on time from 1,192 flights
  • 1 PM: 78.6% on time from 688 flights
  • 2 PM: 79.6% on time from 1,085 flights
  • 3 PM: 82.2% on time from 163 flights
  • 4 PM: 77.7% on time from 464 flights
  • 5 PM: 76.3% on time from 741 flights
  • 6 PM: 61.9% on time from 190 flights
  • 7 PM to 8 PM: too few flights to score
  • 9 PM: 72.2% on time from 217 flights
  • 10 PM: 84.1% on time from 1,017 flights
  • 11 PM: 78.7% on time from 2,573 flights

Why LAS → ATL runs late

July 2023 – July 2026

The airline46.1%

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

Late-arriving aircraft35.3%

the inbound aircraft was late, so this flight started late

Air traffic control16.3%

airspace and airport capacity, including weather-driven flow control

Weather2.1%

weather severe enough to stop this flight specifically

Security0.3%

screening or terminal security incidents

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

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 ATL: 2.4 times the normal rate at LAS and 3.3 times at ATL. Cancelled in bad weather against normal hours: LAS 2.0% against 0.8%, ATL 3.4% 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 ATL in hours of bad weather and in normal hours
Departures fromLASATL
Cancelled in bad weather2.0%3.4%
Cancelled in normal hours0.8%1.0%
Arrived on time, bad weather58.5%66.5%
Arrived on time, normal hours78.5%80.2%
Departures in bad weather14,522105,854

Of the carriers on this route, Delta Air Lines (1.1% cancelled against 2.0% for the other carriers at LAS) cancelled the fewest departures from LAS in bad weather and Frontier Airlines (4.0% cancelled against 1.8% for the other carriers at LAS) the most.

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 ATL, against the other carriers at LAS in the same months
AirlineBad-weather departuresCancelledOther carriers
Delta Air Lines1,2401.1%below the others2.0%
Southwest Airlines6,9252.0%about level2.1%
Spirit Airlines1,3983.8%above the others2.3%
Frontier Airlines9434.0%above the others1.8%

These are airport figures, not route figures: every scheduled departure from LAS and ATL, 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), ATL, 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
CarrierFlightsOn timeCancelledMedian delaySevere
Delta Air Lines10,24685.4%0.92%-9 min4.7%
Southwest Airlines2,22980.7%0.40%-5 min4.1%
Frontier Airlines1,51272.4%1.92%-2 min8.9%
Spirit Airlines1,37074.0%1.90%-3 min8.8%

Delta Air Lines flew 66.7% of the 15,357 flights listed. Frontier Airlines cancelled 1.92% of its flights here against 0.40% for Southwest Airlines.

Delta Air Lines arrived on time 13.0 percentage points more often than Frontier 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
FlightScheduledOperationsOn time
DL755 Delta Air Lines6:00 AM1,03693.9%
DL677 Delta Air Lines7:05 AM81592.1%
F91116 Frontier Airlines11:00 PM77376.3%

DL755 (6:00 AM) arrived on time 93.9% of the time, 17.6 points more often than F91116 (11:00 PM) at 76.3%.

Weekly and seasonal patterns

By day of week

Mon80.4%
Tue86.7%
Wed87.8%
Thu79.9%
Fri79.4%
Sat84.2%
Sun79.2%

Wednesday is historically the most reliable day and Sunday the least, a gap of 8.6 percentage points.

By month

  • Jan: 84.4%
  • Feb: 85.8%
  • Mar: 82.0%
  • Apr: 83.4%
  • May: 82.4%
  • Jun: 76.9%
  • Jul: 68.8%
  • Aug: 79.8%
  • Sep: 85.4%
  • Oct: 86.1%
  • Nov: 89.4%
  • Dec: 89.8%

July is historically the weakest month and December the strongest, a spread of 21.0 percentage points.

Reliability over time

July 2023 – July 2026

  • July 2023: 69.0% from 461 flights
  • August 2023: 76.4% from 452 flights
  • September 2023: 86.2% from 419 flights
  • October 2023: 86.4% from 496 flights
  • November 2023: 88.5% from 446 flights
  • December 2023: 90.0% from 422 flights
  • January 2024: 80.3% from 412 flights
  • February 2024: 83.0% from 361 flights
  • March 2024: 78.8% from 379 flights
  • April 2024: 81.5% from 372 flights
  • May 2024: 82.8% from 410 flights
  • June 2024: 72.6% from 439 flights
  • July 2024: 61.1% from 473 flights
  • August 2024: 76.8% from 418 flights
  • September 2024: 81.6% from 403 flights
  • October 2024: 86.1% from 470 flights
  • November 2024: 94.2% from 429 flights
  • December 2024: 90.6% from 424 flights
  • January 2025: 87.0% from 404 flights
  • February 2025: 85.1% from 366 flights
  • March 2025: 86.7% from 419 flights
  • April 2025: 79.8% from 409 flights
  • May 2025: 82.3% from 449 flights
  • June 2025: 73.7% from 437 flights
  • July 2025: 76.9% from 416 flights
  • August 2025: 86.5% from 405 flights
  • September 2025: 88.4% from 389 flights
  • October 2025: 85.7% from 413 flights
  • November 2025: 85.0% from 390 flights
  • December 2025: 88.9% from 429 flights
  • January 2026: 86.3% from 384 flights
  • February 2026: 89.4% from 341 flights
  • March 2026: 80.2% from 407 flights
  • April 2026: 88.6% from 422 flights
  • May 2026: 82.0% from 407 flights
  • June 2026: 85.2% from 388 flights
  • July 2026: 68.4% from 396 flights

Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 84.5% against 83.4% in the 12 months before — broadly unchanged.

Data and methodology

Calculated by FlyerIntel from 15,357 LAS → ATL 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

Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports

Analysis last recomputed

LAS airportATL airportReturn direction ATL → LAS