PlainFlights

Route · BWI → CHS · 2020–2025 BTS data

Baltimore to Charleston

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BWI to CHS (Baltimore to Charleston) ranks #1873 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

76.4%
On-time
-2.6 pts
vs US avg
53 min
Delay when late
6,736
Flights
#1873 of 4927
Corpus placement

Cancelled

1.0%

Best Month

Feb 2024 94%

Worst Month

Jul 2024 59%

Distance

472 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 104 19 2 2 WN
Nov 2025 103 18 2 0 WN
Oct 2025 118 23 0 0 WN
Sep 2025 90 13 0 0 WN
Aug 2025 99 23 0 0 WN,NK
Jul 2025 117 34 3 1 NK,WN
Jun 2025 119 37 2 0 WN,NK
May 2025 125 35 0 0 WN,NK
Apr 2025 114 24 0 0 WN
Mar 2025 108 15 1 0 WN
Feb 2025 80 21 0 0 WN
Jan 2025 91 25 7 0 WN
Dec 2024 94 27 0 0 WN
Nov 2024 101 14 0 0 WN
Oct 2024 109 15 0 0 WN
Sep 2024 107 15 0 0 WN
Aug 2024 112 25 6 0 NK,WN
Jul 2024 108 44 0 0 WN
Jun 2024 107 26 1 0 WN
May 2024 118 37 0 0 WN
Apr 2024 113 30 0 0 WN
Mar 2024 107 27 0 0 WN
Feb 2024 83 5 0 0 WN
Jan 2024 88 27 1 0 WN

BWI–CHS seasonal on-time pattern

Best: February (83.9%) · weakest: July (62.9%)

60%65%70%75%80%85% JanFebMarAprMayJunJulAugSepOctNovDec 77%

Strongest calendar month

February

83.9% on-time · ~77 flights/mo

Busiest calendar month

July

~102 flights/mo avg

Weakest calendar month

July

62.9% on-time · ~102 flights/mo

Cancellation Rate

1.0%

25 of 2,515 flights

Diversion Rate

0.1%

3 of 2,515 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

BWI - Baltimore

Full on-time, delay-cause, and seasonal performance for Baltimore, MD.

BWI on-time profile

CHS - Charleston

Full on-time, delay-cause, and seasonal performance for Charleston, SC.

CHS on-time profile

Compare the two airports

See BWI and CHS side by side on delays, cancellations, and reliability.

Compare BWI vs CHS

Origin-hub reliability standing

Mid-pack among BWI departures

From BWI, this corridor sits with 53 other 75–85% on-time routes out of 64 tracked departures, not the hub's reliability leaders (0 at ≥85%) and not the softest ( 11 below 75%). Destination: Charleston · fleet on-time rank #4216 of 4927.

What the Data Says About BWI to CHS

The Baltimore to Charleston corridor (BWI to CHS) posts a 76.4% on-time rate on the lower edge of the average band, based on 6,736 tracked flights. Late flights run 53.4 minutes behind on average. 3 carriers cover the 472-mile route; over the last 24 months, 25 of 2,515 flights were cancelled (1.0%) and 0.1% diverted.

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 94% on-time, while Jul 2024 came in at just 59% - a 35-point swing worth factoring into travel timing.

On the multi-year calendar, BWI–CHS peaks in February at 83.9% on-time while July carries the heaviest traffic (~102 flights per month) ; the softest month is July at 62.9%, a 21.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BWI to CHS rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BWI to CHS ranks #1873 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from BWI to CHS? ▼
Flights from Baltimore to Charleston have a 76.4% on-time rate based on 6,736 flights. The average delay is 53.4 minutes. The best recent month was Feb 2024 with 94% on-time.
What is the cancellation rate for BWI to CHS? ▼
Over the last 24 months, 1.0% of flights on this route were cancelled (25 of 2,515 flights) and 0.1% were diverted.
How far is the flight from BWI to CHS? ▼
The flight distance from Baltimore (BWI) to Charleston (CHS) is approximately 472 miles. This route is served by 3 carriers.
When is the best time to fly from BWI to CHS? ▼
The best recent month for on-time performance was Feb 2024 (94% on-time). The worst was Jul 2024 (59% on-time). Consider booking during months with historically better performance.

Airports on this route

BWI Airport

Baltimore
CHS Airport

Charleston
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using BWI–CHS data

BWI–CHS is mid-pack at 76.4% on-time; month and carrier mix move more than the corridor headline.

  • Compare BWI and CHS airport profiles: delay causes and top routes differ even on the same corridor. BWI airport
  • If your dates flex, February (83.9% on-time) beats July (62.9%) on this corridor. Seasonal chart
  • 4 other routes post a similar 76.4% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.