Route reliability record
LAS→DFW
Las Vegas to Dallas-Fort Worth
- Flights
- 5,142
- Period
- September 2025 to August 2026
- Distance
- 1,055 mi
- Carriers
- 3
This route lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 5,142 LAS to DFW flights, of which American Airlines flew 4,005 at 80.2% on time.
Best time to fly LAS to DFW: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 89.0% of the time and Tuesday flights 85.5%, against 79.9% for the route overall.
The US average over the same twelve months is 77.3%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.9%
Arrivals under 15 minutes late, of 4,987 completed flights
Avg delay
97 min
Across delayed arrivals only, not all flights
Cancelled
2.49%
National rate is 1.89%
Best carrier
American
80.2% on time across 4,005 flights
These figures cover 5,142 flights between September 2025 and August 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on LAS to DFW
The two carriers here are closely matched: 2 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlinesthin sample | 259 | 82.2% | 80 min | 1.54% | B |
| American Airlines | 4,005 | 80.2% | 103 min | 2.67% | B |
| Frontier Airlines | 878 | 77.8% | 78 min | 1.94% | B |
No carrier stands out. American tops the table at 80.2%, 2 points clear of the bottom, which is inside the range this kind of sample moves year to year.
Flight by flight
Flights on LAS to DFW
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Las Vegas to Dallas-Fort Worth
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. 1 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 22 points, against 2 points between the best and worst carrier.
- 5am–8am1,252 flights89.0%
- 8am–11am1,163 flights85.9%
- 11am–2pm820 flights74.5%
- 2pm–5pm816 flights67.3%
- 5pm–8pm363 flights75.0%
- 8pm–5am728 flights77.3%
Scale runs 60% to 95%.
Book the early departure. Flights leaving between 5am–8am arrive on time 89.0% of the time, against 67.3% for the afternoon window. That is 22 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 1,252 flights scheduled in it.
Explore
Filter LAS to DFW 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 DFW, the best departure window is 5am–8am at 89.0% on time and the worst is 2pm–5pm at 67.3%, a wide gap of 21.7 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am89.0%
- 8–11am85.9%
- 11am–2pm74.5%
- 2–5pm67.3%
- 5–8pm75.0%
- 8pm–5am77.3%
best all US flightsScale 60% to 95%.
Across the year
When delays peak on this route
This route's year swings by 19 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 68.0% on time, 19 points below December, the best at 86.6%. 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. October was the busiest month here, with 479 flights.
Across the week, Tuesday is the strongest day at 85.5% on time and Sunday the weakest at 75.7%, a spread of 10 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 49% of the 97,000 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Late-arriving aircraft
- 36%Carrier
- 12%National Airspace System
- 3%Extreme weather
- 0%Security
49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 97,000 reported delay minutes here, that single category outweighs weather by 15 to one. The split is drawn from 97,032 reported delay minutes.
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 35,000 of the 97,000 delay minutes reported here.
Cancellations sit at 2.49% against a national 1.89%, which is ordinary. Diversions add another 0.53%.
Connections and stage length
What a delay here actually costs
8.5% 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 an hour and a half, which a normal layover absorbs.
The 1,055 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 68.8% on time across 5,138 flights, 11 points below 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 11 points of difference.
The sample behind these figures is 5,142 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 DFW 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. December runs 86.6% on time and June 68.0%, a swing of 19 points. If the dates move at all, move them out of June before you think about anything else. 4,987 completed flights over 12 months sit behind that.
Common questions
LAS to DFW questions
How often is LAS to DFW delayed?
About one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 20.1% of the 5,142 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
Which airline is most reliable on LAS to DFW?
American Airlines leads at 80.2% on time across 4,005 flights. Frontier Airlines is at the other end on 77.8%, a gap of 2 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on LAS to DFW?
The 5am–8am departure window is the strongest at 89.0% on time. The 2pm–5pm window is the weakest at 67.3%, 22 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 DFW?
June is the weakest month at 68.0% on time, compared with 86.6% in December. Across the year that is 19 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
- DFW to LAS — the return legseparate record
- Harry Reid International (LAS) delay statistics
- Dallas/Fort Worth International (DFW) delay statistics
- Spirit Airlines on LAS to DFW82.2%
- American Airlines on LAS to DFW80.2%
- Frontier Airlines on LAS to DFW77.8%
- LAS to LAX, a related route77.9%
- ORD to DFW, a related route70.4%
- LAS to DEN, a related route76.5%
- Spirit Airlines on-time record82.2%
- American Airlines on-time record80.2%
- Frontier Airlines on-time record77.8%
- 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 DFW and DFW 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.