Carrier route record

F9MSP→ATL

Frontier Airlines · Minneapolis to Atlanta

Flights: 179
Period: July 2025 to June 2026
Share of route: 5%
Carriers: 3

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

Frontier on MSP to ATL earns a D, which is as low as this site's scale goes for a reason. Only 56.6% of flights arrive inside the 15-minute window, 21 points worse than the national rate of 77.6%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 179 flights, with a median arrival 8 minutes late.

The national on-time rate over the same period is 77.6%, so Frontier on MSP to ATL runs 21 points behind the country as a whole. Across a thousand flights that is about 210 extra late arrivals.

On time

56.6%

Arrivals under 15 minutes late, of 175 completed flights

Avg delay

73 min

Across delayed arrivals only, not all flights

Cancelled

2.23%

National rate is 1.81%

Whole route

82.8%

Every carrier on MSP to ATL, 3,504 flights

These figures cover 179 flights between July 2025 and June 2026. Beyond the headline rate, 14.3% 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 MSP to ATL

Frontier flew 179 of the 3,504 flights on MSP to ATL, about 5% of it. Its 56.6% on time is 26 points worse than the route as a whole, which runs 82.8%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Delta at 84.5% to Frontier at 56.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

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 MSP to ATL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	3,201	84.5%	66 min	0.41%	B+
Spirit Airlinesthin sample	124	78.0%	74 min	0.81%	B+
Frontier Airlines (this page)thin sample	179	56.6%	73 min	2.23%	D

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 179 flights.

5am–8am—
8am–11am5 flights—
11am–2pm106 flights59.2%
2pm–5pm59 flights50.0%
5pm–8pm9 flights—
8pm–5am—

Scale runs 40% to 65%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 11am–2pm slot at 59.2% on time, ahead of 2pm–5pm at 50.0%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 11am–2pm window is the busiest, with 106 flights scheduled in it.

Across the year

Frontier on MSP to ATL through the year

Jul–Sep 202548 flights71.7%
Oct–Dec 202533 flights54.5%
Jan–Mar 202632 flights51.6%
Apr–Jun 202666 flights49.2%

Scale runs 40% to 75%. 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 56.6% on time across 179 flights.

Frontier on MSP to ATL did not run the same all year. Its best quarter was Jul–Sep 2025 at 71.7% on time and its weakest Apr–Jun 2026 at 49.2%, a swing of 23 points on roughly 45 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Thursday is the strongest day at 68.1% on time and Sunday the weakest at 42.2%. 26 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 47% of the 5,574 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
47%
National Airspace System
27%
Carrier
25%
Extreme weather
1%

47% 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 5,574 reported delay minutes here, that single category outweighs weather by 38 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 5,574 reported delay minutes.

Cancellations sit at 2.23% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 14.3% 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 907 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 is a different operation and performs like one: it runs 63.4% on time across 179 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.

One caution: this is a thin sample. 179 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 MSP to ATL

Put together: treat all of this as provisional. 179 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 56.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 175 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