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Route · CHS → BWI · 2020–2025 BTS data

Charleston to Baltimore

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CHS to BWI (Charleston to Baltimore) ranks #1893 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.4%
On-time
+4.4 pts
vs US avg
56 min
Delay when late
6,693
Flights
#1893 of 4927
Corpus placement

Cancelled

1.3%

Best Month

Feb 2024 96%

Worst Month

Jul 2024 65%

Distance

472 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 102 18 2 0 WN
Nov 2025 103 15 2 0 WN
Oct 2025 118 24 0 0 WN
Sep 2025 90 9 0 1 WN
Aug 2025 99 18 1 0 WN,NK
Jul 2025 117 31 6 1 NK,WN
Jun 2025 119 19 3 1 WN,NK
May 2025 125 26 0 0 WN,NK
Apr 2025 114 19 0 0 WN
Mar 2025 108 9 1 1 WN
Feb 2025 80 7 0 0 WN
Jan 2025 91 8 8 0 WN
Dec 2024 94 16 0 0 WN
Nov 2024 101 13 1 0 WN
Oct 2024 110 12 0 0 WN,NK
Sep 2024 107 15 0 0 WN
Aug 2024 112 26 6 0 NK,WN
Jul 2024 108 38 0 0 WN
Jun 2024 107 24 0 0 WN
May 2024 119 21 0 1 WN
Apr 2024 113 11 0 0 WN
Mar 2024 106 18 0 0 WN
Feb 2024 83 3 0 0 WN
Jan 2024 89 15 2 0 WN

CHS–BWI seasonal on-time pattern

Best: February (90.2%) · weakest: July (74.0%)

70%75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 81.7%

Strongest calendar month

February

90.2% on-time · ~77 flights/mo

Busiest calendar month

July

~102 flights/mo avg

Weakest calendar month

July

74.0% on-time · ~102 flights/mo

Cancellation Rate

1.3%

32 of 2,515 flights

Diversion Rate

0.2%

5 of 2,515 flights

Explore origin & destination

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

CHS - Charleston

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

CHS on-time profile

BWI - Baltimore

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

BWI on-time profile

Compare the two airports

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

Compare CHS vs BWI

Origin-hub reliability standing

Mid-pack among CHS departures

From CHS, this corridor sits with 18 other 75–85% on-time routes out of 21 tracked departures, not the hub's reliability leaders (3 at ≥85%) and not the softest ( 0 below 75%). Destination: Baltimore · fleet on-time rank #1783 of 4927.

What the Data Says About CHS to BWI

Bureau of Transportation Statistics records show Charleston to Baltimore (CHS to BWI) running a 83.4% on-time rate over 6,693 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 56.4 minutes. The 472-mile corridor is served by 3 carriers, and over the last 24 months 1.3% of 2,515 flights were cancelled, 0.2% diverted.

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 96% on-time, while Jul 2024 came in at just 65% - a 32-point swing worth factoring into travel timing.

On the multi-year calendar, CHS–BWI peaks in February at 90.2% on-time while July carries the heaviest traffic (~102 flights per month) ; the softest month is July at 74.0%, a 16.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does CHS to BWI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, CHS to BWI ranks #1893 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 CHS to BWI? ▼
Flights from Charleston to Baltimore have a 83.4% on-time rate based on 6,693 flights. The average delay is 56.4 minutes. The best recent month was Feb 2024 with 96% on-time.
What is the cancellation rate for CHS to BWI? ▼
Over the last 24 months, 1.3% of flights on this route were cancelled (32 of 2,515 flights) and 0.2% were diverted.
How far is the flight from CHS to BWI? ▼
The flight distance from Charleston (CHS) to Baltimore (BWI) is approximately 472 miles. This route is served by 3 carriers.
When is the best time to fly from CHS to BWI? ▼
The best recent month for on-time performance was Feb 2024 (96% on-time). The worst was Jul 2024 (65% on-time). Consider booking during months with historically better performance.

Airports on this route

CHS Airport

Charleston
BWI Airport

Baltimore
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 CHS–BWI data

CHS–BWI runs 4.4 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare CHS and BWI airport profiles: delay causes and top routes differ even on the same corridor. CHS airport
  • If your dates flex, February (90.2% on-time) beats July (74.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.4% 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.