Carrier route record
F9CLT→BWI
Frontier Airlines · Charlotte to Baltimore
- Flights
- 139
- Period
- July 2025 to June 2026
- Share of route
- 5%
- Carriers
- 6
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on CLT to BWI lands a B, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 139 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 966 at 78.3% on time.
The US average over the same twelve months is 77.6%, so there is little to separate Frontier on CLT to BWI from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.5%
Arrivals under 15 minutes late, of 136 completed flights
Avg delay
100 min
Across delayed arrivals only, not all flights
Cancelled
2.16%
National rate is 1.81%
Whole route
76.5%
Every carrier on CLT to BWI, 2,996 flights
These figures cover 139 flights between July 2025 and June 2026. Beyond the headline rate, 11.0% 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 CLT to BWI
Frontier flew 139 of the 2,996 flights on CLT to BWI, about 5% of it. Its 76.5% on time is about level with the route as a whole at 76.5%. Ranked by on-time rate it is number four of six carriers on the route, where the range runs from Envoy at 100.0% to Spirit at 69.6%. Three of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 3 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Airthin sample | 1 | 100.0% | — | 0.00% | A+ |
| PSA Airlinesthin sample | 57 | 80.7% | 48 min | 0.00% | B+ |
| Southwest Airlines | 966 | 78.3% | 60 min | 1.66% | B |
| Frontier Airlines (this page)thin sample | 139 | 76.5% | 100 min | 2.16% | B |
| American Airlines | 1,809 | 75.4% | 74 min | 1.77% | B |
| Spirit Airlinesthin sample | 24 | 69.6% | 91 min | 4.17% | C− |
No carrier stands out. Southwest tops the table at 78.3%, 3 points clear of the bottom, which is inside the range this kind of sample moves year to year.
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 139 flights.
- 5am–8am—
- 8am–11am49 flights85.7%
- 11am–2pm60 flights79.7%
- 2pm–5pm9 flights—
- 5pm–8pm19 flights—
- 8pm–5am2 flights—
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 79.7% on time against 85.7% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 60 flights scheduled in it.
Across the year
Frontier on CLT to BWI through the year
- Jul–Sep 202545 flights81.8%
- Oct–Dec 202526 flights—
- Jan–Mar 202618 flights—
- Apr–Jun 202650 flights78.0%
Scale runs 70% 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 76.5% on time across 139 flights.
Split by quarter, Frontier on CLT to BWI logged 45 flights in Jul–Sep 2025, 26 flights in Oct–Dec 2025, 18 flights in Jan–Mar 2026 and 50 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 76.5% annual figure is the one to use.
Delay causes
Why Frontier runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 72% of the 3,183 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.
- 72%Late-arriving aircraft
- 17%Carrier
- 11%National Airspace System
72% 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 3,183 reported delay minutes here, that single category outweighs weather by 72 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 3,183 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 85.7% on time here.
Cancellations sit at 2.16% 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. 11.0% 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.
At 361 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 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 69.2% on time across 140 flights, 7 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 7 points of difference.
One caution: this is a thin sample. 139 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 CLT to BWI
Put together: treat all of this as provisional. 139 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 76.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 136 completed flights over 12 months sit behind that.
Related
Where to go next
- CLT to BWI, every carrier
- Frontier on BWI to CLT, the return leg
- Southwest Airlines on CLT to BWI78.3%
- American Airlines on CLT to BWI75.4%
- Frontier Airlines network-wide record
- Charlotte Douglas International (CLT) delay statistics
- Baltimore/Washington International Thurgood Marshall (BWI) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
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.