Route reliability record
TLH→ATL
Tallahassee to Atlanta
- Flights
- 2,011
- Period
- September 2025 to August 2026
- Distance
- 223 mi
- Carriers
- 2
This route earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 2,011 TLH to ATL flights, with a median arrival 14 minutes early.
Best time to fly TLH to ATL: a 8am–11am departure, ideally on a Wednesday. Flights in that window arrived on time 91.0% of the time and Wednesday flights 90.3%, against 85.9% for the route overall.
Set against the rest of the country, this route's record is 9 points better than the US average of 77.3%. That gap is worth roughly 86 fewer late arrivals for every thousand flights.
Key figures
On time
85.9%
Arrivals under 15 minutes late, of 1,975 completed flights
Avg delay
98 min
Across delayed arrivals only, not all flights
Cancelled
1.69%
National rate is 1.89%
Best carrier
Delta
85.9% on time across 2,009 flights
These figures cover 2,011 flights between September 2025 and August 2026. The median arrival is 14 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Which airline is most reliable on TLH to ATL
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 2,009 | 85.9% | 98 min | 1.64% | A |
| SkyWest Airlinesthin sample | 2 | 0.0% | 31 min | 50.00% | F− |
Flight by flight
Flights on TLH to ATL
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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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 12 points, against half a point between the best and worst carrier.
- 5am–8am597 flights90.8%
- 8am–11am362 flights91.0%
- 11am–2pm280 flights84.5%
- 2pm–5pm271 flights78.6%
- 5pm–8pm501 flights80.9%
- 8pm–5am—
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 91.0% of the time, against 78.6% 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 5am–8am window is the busiest, with 597 flights scheduled in it.
Explore
Filter TLH to ATL 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 TLH to ATL, the best departure window is 8am–11am at 91.0% on time and the worst is 2pm–5pm at 78.6%, a wide gap of 12.4 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am90.8%
- 8–11am91.0%
- 11am–2pm84.5%
- 2–5pm78.6%
- 5–8pm80.9%
- 8pm–5am—
best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 17 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 74.7% on time, 17 points below April, the best at 91.7%. 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 201 flights.
Across the week, Wednesday is the strongest day at 90.3% on time and Monday the weakest at 81.5%, a spread of 9 points.
Delay causes
Why this route gets delayed
Carrier accounts for 52% of the 27,000 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 33%Late-arriving aircraft
- 12%National Airspace System
- 3%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 14,000 of the 27,000 delay minutes reported here. The split is drawn from 27,283 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 91.0% on time here.
Cancellations sit at 1.69% against a national 1.89%, which is ordinary. Diversions add another 0.10%.
Connections and stage length
What a delay here actually costs
6.9% 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.
At 223 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.
The return leg runs 83.8% on time across 2,011 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.
The sample behind these figures is 2,011 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 ATL 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. April runs 91.7% on time and July 74.7%, a swing of 17 points. If the dates move at all, move them out of July before you think about anything else. 1,975 completed flights over 12 months sit behind that.
Common questions
TLH to ATL questions
How often is TLH to ATL delayed?
About one flight in seven arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 14.1% of the 2,011 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.
How reliable is TLH to ATL compared with the rest of the country?
85.9% of flights arrive on time here against a national 77.3%, a difference of 9 points in its favour. That is worth a A on this site's grading scale.
What time of day has the fewest delays on TLH to ATL?
The 8am–11am departure window is the strongest at 91.0% on time. The 2pm–5pm window is the weakest at 78.6%, 12 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 TLH to ATL?
July is the weakest month at 74.7% on time, compared with 91.7% in April. Across the year that is 17 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
- ATL to TLH — the return legseparate record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- TLH to MIA, a related route81.6%
- LGA to ATL, a related route75.5%
- TLH to DFW, a related route78.9%
- Delta Air Lines on-time record85.9%
- SkyWest Airlines on-time record0.0%
- 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. TLH to ATL and ATL to TLH 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.