Carrier route record

F9LAX→DFW

Frontier Airlines · Los Angeles to Dallas-Fort Worth

Flights: 447
Period: July 2025 to June 2026
Share of route: 7%
Carriers: 4

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.

Frontier on LAX to DFW sits in the middle of the pack with a C. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 447 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 718 at 83.6% on time.

Delta Air Lines is the most reliable of the three carriers covered here at 83.6% on time across 718 flights.

On time

74.1%

Arrivals under 15 minutes late, of 437 completed flights

Avg delay

94 min

Across delayed arrivals only, not all flights

Cancelled

1.57%

National rate is 1.81%

Whole route

74.2%

Every carrier on LAX to DFW, 6,231 flights

These figures cover 447 flights between July 2025 and June 2026. Beyond the headline rate, 8.7% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Carrier by carrier

Frontier against every carrier on LAX to DFW

Frontier flew 447 of the 6,231 flights on LAX to DFW, about 7% of it. Its 74.1% on time is about level with the route as a whole at 74.2%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Delta at 83.6% to American at 72.7%.

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 83.6% of the time; American Airlines manages 72.7%. Sample sizes sit next to every figure, because a two-point gap across 4,563 flights means less than a ten-point one.

On-time performance by carrier on LAX to DFW
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	718	83.6%	80 min	1.81%	B
Frontier Airlines (this page)	447	74.1%	94 min	1.57%	C
Spirit Airlines	503	74.0%	63 min	3.38%	C−
American Airlines	4,563	72.7%	93 min	2.52%	C

Spirit Airlines cancels 3.4% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

Flight by flight

Frontier flight numbers on LAX to DFW

F9 496419:0374.2% · 281 flights

Departure window

When Frontier runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 12 points, against 11 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am117 flights74.8%
8am–11am55 flights78.8%
11am–2pm55 flights68.5%
2pm–5pm36 flights66.7%
5pm–8pm184 flights75.6%
8pm–5am—

Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 78.8% of the time, against 66.7% for the afternoon window. That is 12 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 184 flights scheduled in it.

Across the year

Frontier on LAX to DFW through the year

Darker means more delays. Figures are on-time percentages.April best, March worst

April is the best month on the calendar at 86.8% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. June was the busiest month here, with 60 flights.

Across the week, Thursday is the strongest day at 83.1% on time and Monday the weakest at 65.8%. 17 points is a smaller lever than departure hour, but it is free.

Delay causes

Why Frontier runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 55% of the 11,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
55%
Carrier
32%
National Airspace System
12%
Extreme weather
1%

55% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 11,000 reported delay minutes here, that single category outweighs weather by 55 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 10,587 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 78.8% on time here.

Cancellations sit at 1.57% against a national 1.81%, which is ordinary. Diversions add another 0.67%.

Connections and stage length

What a delay here costs

8.7% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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 1,235 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg runs 76.0% on time across 447 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. 447 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 LAX to DFW

Put together: treat all of this as provisional. 447 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 74.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 437 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures