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Route · CMH → BWI · 2020–2025 BTS data

Columbus to Baltimore

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CMH to BWI (Columbus to Baltimore) ranks #2147 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

88.8%
On-time
+9.8 pts
vs US avg
66 min
Delay when late
5,820
Flights
#2147 of 4927
Corpus placement

Cancelled

0.8%

Best Month

Apr 2025 97%

Worst Month

Jul 2024 80%

Distance

337 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 94 18 1 0 WN
Nov 2025 90 12 0 0 WN
Oct 2025 98 5 0 0 WN
Sep 2025 90 10 0 0 WN
Aug 2025 92 9 2 0 WN
Jul 2025 92 14 7 0 WN
Jun 2025 90 13 0 0 WN
May 2025 88 7 0 0 WN
Apr 2025 87 3 0 0 WN
Mar 2025 90 10 1 0 WN
Feb 2025 73 8 0 1 WN
Jan 2025 77 4 5 0 WN
Dec 2024 93 7 0 0 WN
Nov 2024 90 6 0 0 WN
Oct 2024 109 11 0 0 WN
Sep 2024 104 5 0 0 WN
Aug 2024 105 14 0 0 WN
Jul 2024 92 18 0 0 WN
Jun 2024 89 6 1 0 WN
May 2024 89 16 0 0 WN
Apr 2024 87 9 0 0 WN
Mar 2024 90 10 0 0 WN
Feb 2024 70 9 0 0 WN
Jan 2024 80 12 1 0 WN

CMH–BWI seasonal on-time pattern

Best: April (91.8%) · weakest: July (83.5%)

82%84%86%88%90%92%94% JanFebMarAprMayJunJulAugSepOctNovDec 87.3%

Strongest calendar month

April

91.8% on-time · ~77 flights/mo

Busiest calendar month

October

~95 flights/mo avg

Weakest calendar month

July

83.5% on-time · ~89 flights/mo

Cancellation Rate

0.8%

18 of 2,159 flights

Diversion Rate

0.0%

1 of 2,159 flights

Explore origin & destination

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

CMH - Columbus

Full on-time, delay-cause, and seasonal performance for Columbus, OH.

CMH 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 CMH and BWI side by side on delays, cancellations, and reliability.

Compare CMH vs BWI

Origin-hub reliability standing

Among CMH's stronger departures

CMH → BWI posts a 88.8% on-time rate, landing in the ≥85% band with 13 of 33 BTS-tracked routes leaving Columbus. The same hub also shows 19 mid-band and 1 challenged departures · fleet-wide on-time rank #276 of 4927 (highest on-time = #1).

What the Data Says About CMH to BWI

Columbus to Baltimore (CMH to BWI) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.8% on-time rate across 5,820 flights, with delays that do happen averaging 65.5 minutes. The corridor runs roughly 337 miles and is served by 1 carrier. Over the most recent 24 months, 18 of 2,159 flights were cancelled (0.8%) and 1 diverted (0.0%).

The monthly split is wide on this route: Apr 2025 posted the strongest performance at 97% on-time, while Jul 2024 came in at just 80% - a 16-point swing worth factoring into travel timing.

On the multi-year calendar, CMH–BWI peaks in April at 91.8% on-time while October carries the heaviest traffic (~95 flights per month) ; the softest month is July at 83.5%, a 8.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does CMH to BWI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, CMH to BWI ranks #2147 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 CMH to BWI? ▼
Flights from Columbus to Baltimore have a 88.8% on-time rate based on 5,820 flights. The average delay is 65.5 minutes. The best recent month was Apr 2025 with 97% on-time.
What is the cancellation rate for CMH to BWI? ▼
Over the last 24 months, 0.8% of flights on this route were cancelled (18 of 2,159 flights) and 0.0% were diverted.
How far is the flight from CMH to BWI? ▼
The flight distance from Columbus (CMH) to Baltimore (BWI) is approximately 337 miles. This route is served by 1 carrier.
When is the best time to fly from CMH to BWI? ▼
The best recent month for on-time performance was Apr 2025 (97% on-time). The worst was Jul 2024 (80% on-time). Consider booking during months with historically better performance.

Airports on this route

CMH Airport

Columbus
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 CMH–BWI data

CMH–BWI runs 9.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare CMH and BWI airport profiles: delay causes and top routes differ even on the same corridor. CMH airport
  • If your dates flex, April (91.8% on-time) beats July (83.5%) on this corridor. Seasonal chart
  • 4 other routes post a similar 88.8% 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.