Carrier route record
F9LAS→DTW
Frontier Airlines · Las Vegas to Detroit
- Flights
- 102
- Period
- September 2025 to August 2026
- Share of route
- 4%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on LAS to DTW draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 102 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 1,877 at 83.8% on time.
The national on-time rate over the same period is 77.3%, so Frontier on LAS to DTW runs 10 points behind the country as a whole. Across a thousand flights that is about 103 extra late arrivals.
Key figures
On time
67.0%
Arrivals under 15 minutes late, of 100 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
1.96%
National rate is 1.89%
Whole route
80.6%
Every carrier on LAS to DTW, 2,765 flights
These figures cover 102 flights between September 2025 and August 2026. Beyond the headline rate, 16.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Frontier against every carrier on LAS to DTW
Frontier flew 102 of the 2,765 flights on LAS to DTW, about 4% of it. Its 67.0% on time is 14 points worse than the route as a whole, which runs 80.6%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from Delta at 83.8% to Southwest at 64.8%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: about a point 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 |
|---|---|---|---|---|---|
| Delta Air Lines | 1,877 | 83.8% | 74 min | 0.64% | B+ |
| Spirit Airlines | 437 | 82.8% | 104 min | 1.60% | B |
| Frontier Airlines (this page)thin sample | 102 | 67.0% | 65 min | 1.96% | C |
| Southwest Airlinesthin sample | 349 | 64.8% | 41 min | 0.00% | D+ |
No carrier stands out. Delta tops the table at 83.8%, about a point clear of the bottom, which is inside the range this kind of sample moves year to year.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Frontier runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 102 flights.
There are not enough flights in each departure window to split Frontier's LAS to DTW record by time of day without the percentages moving on noise. The headline rate of 67.0% is the reliable figure here.
Across the year
Frontier on LAS to DTW through the year
- Oct–Dec 202526 flights—
- Jan–Mar 20265 flights—
- Apr–Jun 202613 flights—
- Jul–Sep 202658 flights53.6%
Scale runs 45% to 60%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 67.0% on time across 102 flights.
Split by quarter, Frontier on LAS to DTW logged 26 flights in Oct–Dec 2025, 5 flights in Jan–Mar 2026, 13 flights in Apr–Jun 2026 and 58 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 67.0% annual figure is the one to use.
Arrival by arrival
How late Frontier on LAS to DTW runs when it is late
Frontier on LAS to DTW often beats the schedule: 29 of 100 completed flights, 29%, arrived 15 minutes or more early. The 33 late arrivals split 6 under half an hour, 11 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early29 flights29.0%
- Within 15 min38 flights38.0%
- 15–29 min late6 flights6.0%
- 30–59 min late11 flights11.0%
- 1–2 hours late12 flights12.0%
- 2+ hours late4 flights4.0%
Scale runs 0% to 100%.
Share of 100 completed flights by arrival against schedule.
6 of 38 late departures made up the time and arrived on time, 16% of them. Only 1 left on time and still arrived late.
The worst days
Worst days for Frontier on LAS to DTW
The latest arrival of the period was on 10 July 2026, 2 hours 46 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Four of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 July 2026 | 2 hours 46 minutes | Late-arriving aircraft |
| 27 August 2026 | 2 hours 5 minutes | Carrier |
| 28 July 2026 | 2 hours 2 minutes | Late-arriving aircraft |
| 6 July 2026 | 2 hours | Carrier |
| 30 July 2026 | 1 hour 43 minutes | Carrier |
Delay causes
Why Frontier runs late on this route
Late-arriving aircraft accounts for 48% of the 2,144 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Late-arriving aircraft
- 47%Carrier
- 5%National Airspace System
48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,144 reported delay minutes here, that single category outweighs weather by 48 to one. The split is drawn from 2,144 reported delay minutes.
The largest share of delay minutes, 47%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,011 of the 2,144 delay minutes reported here.
Cancellations sit at 1.96% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
16.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 1,749 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg runs 65.0% on time across 102 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 102 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Frontier on LAS to DTW
Put together: treat all of this as provisional. 102 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 67.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 100 completed flights over 12 months sit behind that.
Related
Where to go next
- LAS to DTW, every carrier
- Frontier on DTW to LAS, the return leg
- Delta Air Lines on LAS to DTW83.8%
- Spirit Airlines on LAS to DTW82.8%
- Southwest Airlines on LAS to DTW64.8%
- Frontier Airlines network-wide record
- Harry Reid International (LAS) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.