Route reliability record
DFW→JAX
Dallas-Fort Worth to Jacksonville
- Flights
- 1,840
- Period
- September 2025 to August 2026
- Distance
- 917 mi
- Carriers
- 2
This route draws a D. 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 1,840 DFW to JAX flights, with a median arrival 1 minute late.
Best time to fly DFW to JAX: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 87.9% of the time and Tuesday flights 75.3%, against 64.8% for the route overall.
The national on-time rate over the same period is 77.3%, so this route runs 13 points behind the country as a whole. Across a thousand flights that is about 125 extra late arrivals.
Key figures
On time
64.8%
Arrivals under 15 minutes late, of 1,791 completed flights
Avg delay
68 min
Across delayed arrivals only, not all flights
Cancelled
2.45%
National rate is 1.89%
Best carrier
American
64.7% on time across 1,809 flights
These figures cover 1,840 flights between September 2025 and August 2026. Beyond the headline rate, 14.6% 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 DFW to JAX
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 |
|---|---|---|---|---|---|
| Frontier Airlinesthin sample | 31 | 67.7% | 59 min | 0.00% | C+ |
| American Airlines | 1,809 | 64.7% | 68 min | 2.49% | D |
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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 40 points, against half a point between the best and worst carrier.
- 5am–8am275 flights87.9%
- 8am–11am227 flights75.6%
- 11am–2pm283 flights68.6%
- 2pm–5pm375 flights60.7%
- 5pm–8pm482 flights54.0%
- 8pm–5am198 flights47.9%
Scale runs 40% to 95%.
The 8pm–5am window is where this operation falls apart: 47.9% on time, against 87.9% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5pm–8pm window is the busiest, with 482 flights scheduled in it.
Explore
Filter DFW to JAX 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 DFW to JAX, the best departure window is 5am–8am at 87.9% on time and the worst is 8pm–5am at 47.9%, a wide gap of 40.0 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am87.9%
- 8–11am75.6%
- 11am–2pm68.6%
- 2–5pm60.7%
- 5–8pm54.0%
- 8pm–5am47.9%
best all US flightsScale 40% to 95%.
Across the year
When delays peak on this route
This route's year swings by 26 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.
July is the worst month at 50.3% on time, 26 points below September, the best at 75.8%. 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. July was the busiest month here, with 183 flights.
Across the week, Tuesday is the strongest day at 75.3% on time and Sunday the weakest at 59.9%, a spread of 15 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 54% of the 43,000 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Late-arriving aircraft
- 29%Carrier
- 11%National Airspace System
- 6%Extreme weather
- 0%Security
54% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 43,000 reported delay minutes here, that single category outweighs weather by 9 to one. The split is drawn from 42,727 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 87.9% on time here.
Cancellations sit at 2.45% against a national 1.89%, which is ordinary. Diversions add another 0.22%.
Connections and stage length
What a delay here actually costs
14.6% 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.
The 917 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 79.3% on time across 1,840 flights, 15 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 15 points of difference.
The sample behind these figures is 1,840 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 JAX 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 75.8% on time and July 50.3%, a swing of 26 points. If the dates move at all, move them out of July before you think about anything else. 1,791 completed flights over 12 months sit behind that.
Common questions
DFW to JAX questions
How often is DFW to JAX delayed?
About 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 35.2% of the 1,840 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.
How reliable is DFW to JAX compared with the rest of the country?
64.8% of flights arrive on time here against a national 77.3%, a difference of 13 points against it. That is worth a D on this site's grading scale.
What time of day has the fewest delays on DFW to JAX?
The 5am–8am departure window is the strongest at 87.9% on time. The 8pm–5am window is the weakest at 47.9%, 40 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 July delays on DFW to JAX?
July is the weakest month at 50.3% on time, compared with 75.8% in September. Across the year that is 26 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
- JAX to DFW — the return legseparate record
- Dallas/Fort Worth International (DFW) delay statistics
- Jacksonville International (JAX) delay statistics
- DFW to ORD, a related route68.8%
- ATL to JAX, a related route75.1%
- DFW to ATL, a related route75.6%
- Frontier Airlines on-time record67.7%
- American Airlines on-time record64.7%
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
Direction matters. DFW to JAX and JAX to DFW 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.