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DelayAtlas

Route reliability record

ATL→TPA

Atlanta to Tampa

Flights
6,204
Period
September 2025 to August 2026
Distance
406 mi
Carriers
4
CGRADE

This route 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 77.3%. The late ones land about an hour behind schedule. That rests on 6,204 ATL to TPA flights, of which Southwest Airlines flew 731 at 75.1% on time.

Best time to fly ATL to TPA: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 92.1% of the time and Wednesday flights 83.4%, against 73.0% for the route overall.

Southwest Airlines is the most reliable of the three carriers covered here at 75.1% on time across 731 flights.

Key figures

On time

73.0%

Arrivals under 15 minutes late, of 6,105 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

1.34%

National rate is 1.89%

Best carrier

Southwest

75.1% on time across 731 flights

These figures cover 6,204 flights between September 2025 and August 2026. Beyond the headline rate, 9.6% 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 ATL to TPA

The choice of carrier is not cosmetic here. Southwest Airlines arrives on time 75.1% of the time; Frontier Airlines manages 64.8%. Sample sizes sit next to every figure, because a two-point gap across 937 flights means less than a ten-point one.

On-time performance by carrier on ATL to TPA
AirlineFlightsOn timeAvg delayCancelledGrade
Spirit Airlinesthin sample8479.5%84 min1.19%B
Southwest Airlines73175.1%64 min0.82%B+
Delta Air Lines4,45274.3%59 min1.33%C
Frontier Airlines93764.8%84 min1.81%D

Southwest leads Frontier by 10 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

Flight by flight

Flights on ATL to TPA

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Best ways to make this trip

The most reliable ways to fly Atlanta to Tampa

Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 1 of the top 4 use a different airport at one end.

Most reliable ways to fly from ATL to TPA
OptionAirlineSuccessOn timeCancelledBest departureMost punctual flight
1. ATL → SRQAtlanta to SarasotaDelta Air Lines79.5%80.8%1.66%8am–11am, WedDL 3196 08:05
2. ATL → TPAAtlanta to TampaSouthwest Airlines74.5%75.1%0.82%5am–8am, Tue—
3. ATL → TPAAtlanta to TampaDelta Air Lines73.3%74.3%1.33%5am–8am, WedDL 2605 07:25
4. ATL → TPAAtlanta to TampaFrontier Airlines63.6%64.8%1.81%5am–8am, WedF9 3782 10:03

Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.

Plan this trip by month, day and time

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 32 points, against 10 points between the best and worst carrier.

  • 5am–8am374 flights92.1%
  • 8am–11am1,071 flights82.0%
  • 11am–2pm1,112 flights82.7%
  • 2pm–5pm1,292 flights72.1%
  • 5pm–8pm1,248 flights59.7%
  • 8pm–5am1,107 flights64.2%

Scale runs 50% to 100%.

The 5pm–8pm window is where this operation falls apart: 59.7% on time, against 92.1% 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 2pm–5pm window is the busiest, with 1,292 flights scheduled in it.

Explore

Filter ATL to TPA 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 ATL to TPA, the best departure window is 5am–8am at 92.1% on time and the worst is 5pm–8pm at 59.7%, a wide gap of 32.4 points. All US flights leaving 5am–8am ran 89.3%.

  • 5–8am92.1%
  • 8–11am82.0%
  • 11am–2pm82.7%
  • 2–5pm72.1%
  • 5–8pm59.7%
  • 8pm–5am64.2%

best all US flightsScale 50% to 95%.

Across the year

When delays peak on this route

This route's year swings by 23 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.

On-time rate by calendar month74J80F72M80A68M80J59J61A82S77O76N70D
Darker means more delays. Figures are on-time percentages.September best, July worst

July is the worst month at 59.3% on time, 23 points below September, the best at 82.2%. 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. March was the busiest month here, with 568 flights.

Across the week, Wednesday is the strongest day at 83.4% on time and Sunday the weakest at 65.5%, a spread of 18 points.

On-time rate by day of the week69.7Mon76.6Tue83.4Wed74.0Thu69.7Fri73.4Sat65.5Sun
Monday: 69.7 percent on time. Tuesday: 76.6 percent on time. Wednesday: 83.4 percent on time. Thursday: 74.0 percent on time. Friday: 69.7 percent on time. Saturday: 73.4 percent on time. Sunday: 65.5 percent on time

Delay causes

Why this route gets delayed

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 106,000 reported delay minutes.

  • Carrier
    41%
  • Late-arriving aircraft
    36%
  • National Airspace System
    18%
  • Extreme weather
    4%
  • Security
    0%

36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 106,000 reported delay minutes here, that single category outweighs weather by 10 to one. The split is drawn from 106,026 reported delay minutes.

The largest share of delay minutes, 41%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 44,000 of the 106,000 delay minutes reported here.

Cancellations sit at 1.34% against a national 1.89%, which is ordinary. Diversions add another 0.26%.

Connections and stage length

What a delay here actually costs

9.6% 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.

At 406 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 5am–8am window matters as much as it does.

The return leg is a different operation and performs like one: it runs 79.6% on time across 6,200 flights, 7 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 7 points of difference.

The sample behind these figures is 6,204 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 TPA 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 82.2% on time and July 59.3%, a swing of 23 points. If the dates move at all, move them out of July before you think about anything else. 6,105 completed flights over 12 months sit behind that.

Common questions

ATL to TPA questions

How often is ATL to TPA delayed?

About one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 27.0% of the 6,204 flights in this analysis, against 22.7% nationally. Delayed flights are late by about an hour on average.

Which airline is most reliable on ATL to TPA?

Southwest Airlines leads at 75.1% on time across 731 flights. Frontier Airlines is at the other end on 64.8%, a gap of 10 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.

What time of day has the fewest delays on ATL to TPA?

The 5am–8am departure window is the strongest at 92.1% on time. The 5pm–8pm window is the weakest at 59.7%, 32 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 ATL to TPA?

July is the weakest month at 59.3% on time, compared with 82.2% in September. Across the year that is 23 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

Direction matters. ATL to TPA and TPA to ATL 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.