Route reliability record
TUL→ATL
Tulsa to Atlanta
- Flights
- 1,573
- Period
- September 2025 to August 2026
- Distance
- 674 mi
- Carriers
- 1
This route earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 1,573 TUL to ATL flights, with a median arrival 18 minutes early.
Best time to fly TUL to ATL: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 93.4% of the time and Wednesday flights 93.9%, against 87.7% for the route overall.
Set against the rest of the country, this route's record is 10 points better than the US average of 77.3%. That gap is worth roughly 104 fewer late arrivals for every thousand flights.
Key figures
On time
87.7%
Arrivals under 15 minutes late, of 1,531 completed flights
Avg delay
122 min
Across delayed arrivals only, not all flights
Cancelled
2.42%
National rate is 1.89%
Best carrier
Delta
87.7% on time across 1,573 flights
These figures cover 1,573 flights between September 2025 and August 2026. The median arrival is 18 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 TUL 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 | 1,573 | 87.7% | 122 min | 2.42% | A |
Flight by flight
Flights on TUL 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 11 points, against half a point between the best and worst carrier.
- 5am–8am365 flights93.4%
- 8am–11am251 flights93.1%
- 11am–2pm279 flights86.9%
- 2pm–5pm361 flights83.5%
- 5pm–8pm317 flights82.7%
- 8pm–5am—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 93.4% of the time, against 82.7% for the evening window. That is 11 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 365 flights scheduled in it.
Explore
Filter TUL 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 TUL to ATL, the best departure window is 5am–8am at 93.4% on time and the worst is 5pm–8pm at 82.7%, a wide gap of 10.7 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am93.4%
- 8–11am93.1%
- 11am–2pm86.9%
- 2–5pm83.5%
- 5–8pm82.7%
- 8pm–5am—
best all US flightsScale 60% to 100%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 14 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 78.8% on time, 14 points below February, the best at 92.5%. 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 146 flights.
Across the week, Wednesday is the strongest day at 93.9% on time and Sunday the weakest at 80.2%, a spread of 14 points.
Delay causes
Why this route gets delayed
Carrier accounts for 50% of the 23,000 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Carrier
- 38%Late-arriving aircraft
- 8%Extreme weather
- 5%National Airspace System
38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 23,000 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 22,916 reported delay minutes.
The largest share of delay minutes, 50%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 11,000 of the 23,000 delay minutes reported here.
Cancellations sit at 2.42% against a national 1.89%, which is ordinary. Diversions add another 0.25%.
Connections and stage length
What a delay here actually costs
6.6% 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 close to two hours, which a normal layover absorbs.
The 674 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 84.3% on time across 1,573 flights, 3 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 3 points of difference.
The sample behind these figures is 1,573 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. February runs 92.5% on time and July 78.8%, a swing of 14 points. If the dates move at all, move them out of July before you think about anything else. 1,531 completed flights over 12 months sit behind that.
Common questions
TUL to ATL questions
How often is TUL to ATL delayed?
About one flight in eight arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 12.3% of the 1,573 flights in this analysis, against 22.7% nationally. Delayed flights are late by close to two hours on average.
How reliable is TUL to ATL compared with the rest of the country?
87.7% of flights arrive on time here against a national 77.3%, a difference of 10 points in its favour. That is worth a A on this site's grading scale.
What time of day has the fewest delays on TUL to ATL?
The 5am–8am departure window is the strongest at 93.4% on time. The 5pm–8pm window is the weakest at 82.7%, 11 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 TUL to ATL?
July is the weakest month at 78.8% on time, compared with 92.5% in February. Across the year that is 14 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 TUL — the return legseparate record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- TUL to DFW, a related route79.1%
- LGA to ATL, a related route75.5%
- TUL to DEN, a related route80.4%
- Delta Air Lines on-time record87.7%
- 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. TUL to ATL and ATL to TUL 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.