Carrier route record

F9BDL→ATL

Frontier Airlines · Hartford to Atlanta

Flights: 116
Period: July 2025 to June 2026
Share of route: 5%
Carriers: 2

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

Frontier on BDL to ATL sits in the middle of the pack with a B+. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 116 flights, with a median arrival 7 minutes early.

The US average over the same twelve months is 77.6%, so there is little to separate Frontier on BDL to ATL from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

75.7%

Arrivals under 15 minutes late, of 115 completed flights

Avg delay

80 min

Across delayed arrivals only, not all flights

Cancelled

0.86%

National rate is 1.81%

Whole route

83.4%

Every carrier on BDL to ATL, 2,328 flights

These figures cover 116 flights between July 2025 and June 2026. Beyond the headline rate, 9.6% 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 BDL to ATL

Frontier flew 116 of the 2,328 flights on BDL to ATL, about 5% of it. Its 75.7% on time is 8 points worse than the route as a whole, which runs 83.4%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 83.9% to Frontier at 75.7%.

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.

On-time performance by carrier on BDL to ATL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	2,212	83.9%	73 min	2.03%	B
Frontier Airlines (this page)thin sample	116	75.7%	80 min	0.86%	B+

Departure window

When Frontier runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 116 flights.

There are not enough flights in each departure window to split Frontier's BDL to ATL record by time of day without the percentages moving on noise. The headline rate of 75.7% is the reliable figure here.

Across the year

Frontier on BDL to ATL through the year

Jul–Sep 202533 flights72.7%
Oct–Dec 202538 flights83.8%
Jan–Mar 202624 flights—
Apr–Jun 202621 flights—

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 75.7% on time across 116 flights.

Split by quarter, Frontier on BDL to ATL logged 33 flights in Jul–Sep 2025, 38 flights in Oct–Dec 2025, 24 flights in Jan–Mar 2026 and 21 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 75.7% annual figure is the one to use.

Across the week, Thursday is the strongest day at 82.9% on time and Sunday the weakest at 61.0%. 22 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 70% of the 2,246 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
70%
Carrier
16%
National Airspace System
13%
Extreme weather
1%

70% 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 2,246 reported delay minutes here, that single category outweighs weather by 60 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 2,246 reported delay minutes.

Cancellations are rare at 0.86%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.6% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The 859 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 77.4% on time across 117 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. 116 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 BDL to ATL

Put together: treat all of this as provisional. 116 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 75.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 115 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