Route reliability record
LAS→DAL
Las Vegas to Dallas
- Flights
- 2,857
- Period
- September 2025 to August 2026
- Distance
- 1,067 mi
- Carriers
- 1
This route sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land about 50 minutes behind schedule. That rests on 2,857 LAS to DAL flights, with a median arrival 1 minute late.
Best time to fly LAS to DAL: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 92.0% of the time and Wednesday flights 80.3%, against 71.0% for the route overall.
The national on-time rate over the same period is 77.3%, so this route runs 6 points behind the country as a whole. Across a thousand flights that is about 63 extra late arrivals.
Key figures
On time
71.0%
Arrivals under 15 minutes late, of 2,803 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
1.51%
National rate is 1.89%
Best carrier
Southwest
71.0% on time across 2,857 flights
These figures cover 2,857 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
Which airline is most reliable on LAS to DAL
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 2,857 | 71.0% | 50 min | 1.51% | C |
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Best ways to make this trip
The most reliable ways to fly Las Vegas to Dallas
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 2 of the top 3 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. LAS → DFWLas Vegas to Dallas-Fort Worth | American Airlines | 78.1% | 80.2% | 2.67% | 5am–8am, Tue | AA 2932 06:00 |
| 2. LAS → DFWLas Vegas to Dallas-Fort Worth | Frontier Airlines | 76.3% | 77.8% | 1.94% | 5am–8am, Wed | F9 3978 06:00 |
| 3. LAS → DALLas Vegas to Dallas | Southwest Airlines | 69.9% | 71.0% | 1.51% | 5am–8am, Wed | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 38 points, against half a point between the best and worst carrier.
- 5am–8am675 flights92.0%
- 8am–11am550 flights83.4%
- 11am–2pm471 flights64.5%
- 2pm–5pm573 flights53.6%
- 5pm–8pm588 flights57.7%
- 8pm–5am—
Scale runs 45% to 95%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 92.0% of the time, against 53.6% for the afternoon window. That is 38 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 675 flights scheduled in it.
Explore
Filter LAS to DAL by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On LAS to DAL, the best departure window is 5am–8am at 92.0% on time and the worst is 2pm–5pm at 53.6%, a wide gap of 38.4 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am92.0%
- 8–11am83.4%
- 11am–2pm64.5%
- 2–5pm53.6%
- 5–8pm57.7%
- 8pm–5am—
best all US flightsScale 45% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 23 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
June is the worst month at 59.0% on time, 23 points below September, the best at 82.1%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. May was the busiest month here, with 259 flights.
Across the week, Wednesday is the strongest day at 80.3% on time and Sunday the weakest at 65.6%, a spread of 15 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 46% of the 41,000 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Late-arriving aircraft
- 34%Carrier
- 18%National Airspace System
- 2%Extreme weather
- 0%Security
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 41,000 reported delay minutes here, that single category outweighs weather by 19 to one. The split is drawn from 40,513 reported delay minutes.
The largest share of delay minutes, 34%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 14,000 of the 41,000 delay minutes reported here.
Cancellations sit at 1.51% against a national 1.89%, which is ordinary. Diversions add another 0.39%.
Connections and stage length
What a delay here actually costs
7.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.
The 1,067 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 74.6% on time across 2,859 flights, 4 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 4 points of difference.
The sample behind these figures is 2,857 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.
Work out the risk of missing a connection in DAL after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 82.1% on time and June 59.0%, a swing of 23 points. If the dates move at all, move them out of June before you think about anything else. 2,803 completed flights over 12 months sit behind that.
Common questions
LAS to DAL questions
How often is LAS to DAL delayed?
Roughly one flight in three arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 29.0% of the 2,857 flights in this analysis, against 22.7% nationally. Delayed flights are late by about 50 minutes on average.
How reliable is LAS to DAL compared with the rest of the country?
71.0% of flights arrive on time here against a national 77.3%, a difference of 6 points against it. That is worth a C on this site's grading scale.
What time of day has the fewest delays on LAS to DAL?
The 5am–8am departure window is the strongest at 92.0% on time. The 2pm–5pm window is the weakest at 53.6%, 38 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are June delays on LAS to DAL?
June is the weakest month at 59.0% on time, compared with 82.1% in September. Across the year that is 23 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- DAL to LAS — the return legseparate record
- Harry Reid International (LAS) delay statistics
- Dallas Love Field (DAL) delay statistics
- LAS to LAX, a related route77.9%
- HOU to DAL, a related route81.6%
- LAS to DEN, a related route76.5%
- Southwest Airlines on-time record71.0%
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Direction matters. LAS to DAL and DAL to LAS are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.