Carrier route record

F9DFW→BWI

Frontier Airlines · Dallas-Fort Worth to Baltimore

Flights: 267
Period: July 2025 to June 2026
Share of route: 20%
Carriers: 4

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

Frontier on DFW to BWI sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 267 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so Frontier on DFW to BWI runs 9 points behind the country as a whole. Across a thousand flights that is about 85 extra late arrivals.

On time

69.1%

Arrivals under 15 minutes late, of 259 completed flights

Avg delay

81 min

Across delayed arrivals only, not all flights

Cancelled

2.62%

National rate is 1.81%

Whole route

69.3%

Every carrier on DFW to BWI, 1,329 flights

These figures cover 267 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 DFW to BWI

Frontier flew 267 of the 1,329 flights on DFW to BWI, about 20% of it. Its 69.1% on time is about level with the route as a whole at 69.3%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from Envoy at 100.0% to American at 69.0%. Two 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 DFW to BWI
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	3	100.0%	—	0.00%	A+
Spirit Airlinesthin sample	121	71.7%	62 min	0.83%	C+
Frontier Airlines (this page)thin sample	267	69.1%	81 min	2.62%	C
American Airlines	938	69.0%	66 min	3.30%	C−

Departure window

When Frontier runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 39 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am83 flights88.8%
8am–11am23 flights—
11am–2pm71 flights61.4%
2pm–5pm89 flights49.4%
5pm–8pm1 flights—
8pm–5am—

Scale runs 40% to 95%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 88.8% of the time, against 49.4% for the afternoon window. That is 39 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 89 flights scheduled in it.

Across the year

Frontier on DFW to BWI through the year

Jul–Sep 202564 flights50.8%
Oct–Dec 202565 flights75.0%
Jan–Mar 202648 flights77.8%
Apr–Jun 202690 flights73.0%

Scale runs 40% to 85%. 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 69.1% on time across 267 flights.

Frontier on DFW to BWI did not run the same all year. Its best quarter was Jan–Mar 2026 at 77.8% on time and its weakest Jul–Sep 2025 at 50.8%, a swing of 27 points on roughly 67 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, Saturday is the strongest day at 78.9% on time and Friday the weakest at 63.0%. 16 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 50% of the 6,467 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
50%
National Airspace System
25%
Carrier
20%
Extreme weather
6%

50% 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 6,467 reported delay minutes here, that single category outweighs weather by 9 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 6,467 reported delay minutes.

The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 88.8% on time here.

Cancellations run at 2.62%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

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 1,217 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 64.8% on time across 268 flights, 4 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 4 points of difference.

One caution: this is a thin sample. 267 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 DFW to BWI

Put together: treat all of this as provisional. 267 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 69.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 259 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