Carrier route record
F9CLT→BWI
Frontier Airlines · Charlotte to Baltimore
- Flights
- 163
- Period
- September 2025 to August 2026
- Share of route
- 6%
- Carriers
- 5
Historical statistics for September 2025 to August 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 77.3%. 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 rests on 163 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 964 at 77.8% on time.
The US average over the same twelve months is 77.3%, 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
76.4%
Arrivals under 15 minutes late, of 157 completed flights
Avg delay
86 min
Across delayed arrivals only, not all flights
Cancelled
3.68%
National rate is 1.89%
Whole route
76.9%
Every carrier on CLT to BWI, 2,947 flights
These figures cover 163 flights between September 2025 and August 2026. Beyond the headline rate, 8.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Frontier against every carrier on CLT to BWI
Frontier flew 163 of the 2,947 flights on CLT to BWI, about 6% of it. Its 76.4% on time is about level with the route as a whole at 76.9%. Ranked by on-time rate it is last of five carriers on the route, where the range runs from Envoy at 100.0% to Frontier at 76.4%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: about a point 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 | 39 | 79.5% | 48 min | 0.00% | B+ |
| Southwest Airlines | 964 | 77.8% | 55 min | 1.87% | B |
| American Airlines | 1,780 | 76.4% | 74 min | 1.52% | B |
| Frontier Airlines (this page)thin sample | 163 | 76.4% | 86 min | 3.68% | B− |
No carrier stands out. Southwest tops the table at 77.8%, about a point clear of the bottom, which is inside the range this kind of sample moves year to year.
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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 163 flights.
- 5am–8am—
- 8am–11am49 flights85.7%
- 11am–2pm83 flights78.5%
- 2pm–5pm9 flights—
- 5pm–8pm20 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 78.5% 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 83 flights scheduled in it.
Across the year
Frontier on CLT to BWI through the year
- Jul–Sep 202513 flights—
- Oct–Dec 202526 flights—
- Jan–Mar 202618 flights—
- Apr–Jun 202650 flights78.0%
- Jul–Sep 202656 flights76.9%
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 76.4% on time across 163 flights.
Split by quarter, Frontier on CLT to BWI logged 13 flights in Jul–Sep 2025, 26 flights in Oct–Dec 2025, 18 flights in Jan–Mar 2026, 50 flights in Apr–Jun 2026 and 56 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 76.4% annual figure is the one to use.
Arrival by arrival
How late Frontier on CLT to BWI runs when it is late
Frontier on CLT to BWI often beats the schedule: 53 of 157 completed flights, 34%, arrived 15 minutes or more early. The 37 late arrivals split 13 under half an hour, 11 between 30 and 60 minutes, and 13 an hour or more.
- 15+ min early53 flights33.8%
- Within 15 min67 flights42.7%
- 15–29 min late13 flights8.3%
- 30–59 min late11 flights7.0%
- 1–2 hours late11 flights7.0%
- 2+ hours late2 flights1.3%
Scale runs 0% to 100%.
Share of 157 completed flights by arrival against schedule.
9 of 35 late departures made up the time and arrived on time, 26% of them. In the other direction, 11 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at BWI.
The worst days
Worst days for Frontier on CLT to BWI
The latest arrival of the period was on 11 May 2026, 21 hours 57 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 May 2026 | 21 hours 57 minutes | Late-arriving aircraft |
| 12 April 2026 | 2 hours 41 minutes | Carrier |
| 10 June 2026 | 1 hour 52 minutes | National Airspace System |
| 30 December 2025 | 1 hour 51 minutes | Late-arriving aircraft |
| 15 February 2026 | 1 hour 41 minutes | Late-arriving aircraft |
Delay causes
Why Frontier runs late on this route
Late-arriving aircraft accounts for 66% of the 3,177 delay minutes carriers reported here, and the remaining four split what is left.
- 66%Late-arriving aircraft
- 18%Carrier
- 16%National Airspace System
66% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,177 reported delay minutes here, that single category outweighs weather by 66 to one. The split is drawn from 3,177 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 run at 3.68%, against 1.89% nationally. That is roughly one flight in 25 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
8.3% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.
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 71.4% on time across 163 flights, 5 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 5 points of difference.
One caution: this is a thin sample. 163 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: the delay figures matter less here than the 3.68% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 157 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 BWI77.8%
- American Airlines on CLT to BWI76.4%
- Frontier Airlines network-wide record
- Charlotte Douglas International (CLT) delay statistics
- Baltimore/Washington International Thurgood Marshall (BWI) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.