PlainFlights

Route · ORD → BWI · 2020–2025 BTS data

Chicago to Baltimore

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ORD to BWI (Chicago to Baltimore) ranks #552 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

79%
On-time
+0 pts
vs US avg
66 min
Delay when late
16,227
Flights
#552 of 4927
Corpus placement

Cancelled

1.5%

Best Month

Feb 2025 90%

Worst Month

Dec 2025 62%

Distance

622 mi

Carriers

42

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 207 79 4 0 YX,F9,MQ,UA
Nov 2025 215 55 15 0 UA,F9,MQ,AA,WN,YX
Oct 2025 246 53 0 0 AA,UA,WN,F9,MQ,NK
Sep 2025 248 48 0 0 MQ,UA,WN,NK,F9
Aug 2025 253 62 3 1 OO,WN,YX,F9,MQ,NK,UA
Jul 2025 247 88 10 1 NK,OO,UA,WN,YX,F9,MQ
Jun 2025 237 67 2 1 AA,OO,UA,WN,YX,MQ,NK
May 2025 236 59 3 4 AA,OO,UA,WN,MQ,NK
Apr 2025 206 34 4 0 MQ,UA,WN,AA
Mar 2025 214 55 2 1 UA,WN,MQ
Feb 2025 178 18 1 0 UA,WN,YX,MQ
Jan 2025 184 31 8 0 UA,WN,YX,MQ
Dec 2024 187 37 0 0 MQ,UA,WN,YX
Nov 2024 200 30 0 0 UA,MQ,WN,AA
Oct 2024 248 48 0 0 UA,MQ,WN,AA
Sep 2024 224 34 0 0 WN,UA,AA,MQ
Aug 2024 224 59 2 4 AA,MQ,WN,UA
Jul 2024 227 57 3 0 AA,MQ,UA,WN
Jun 2024 220 48 1 0 AA,MQ,UA,WN
May 2024 230 59 2 1 AA,MQ,UA,WN
Apr 2024 223 44 0 0 AA,MQ,UA,WN
Mar 2024 221 48 1 0 AA,MQ,UA,WN
Feb 2024 194 29 0 0 AA,MQ,UA,WN
Jan 2024 211 72 17 0 AA,MQ,WN,UA

ORD–BWI seasonal on-time pattern

Best: February (83.9%) · weakest: July (72.2%)

70%75%80%85% JanFebMarAprMayJunJulAugSepOctNovDec 77.9%

Strongest calendar month

February

83.9% on-time · ~188 flights/mo

Busiest calendar month

August

~255 flights/mo avg

Weakest calendar month

July

72.2% on-time · ~248 flights/mo

Cancellation Rate

1.5%

78 of 5,280 flights

Diversion Rate

0.2%

13 of 5,280 flights

Explore origin & destination

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

ORD - Chicago

Full on-time, delay-cause, and seasonal performance for Chicago, IL.

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

Compare ORD vs BWI

Origin-hub reliability standing

Mid-pack among ORD departures

From ORD, this corridor sits with 147 other 75–85% on-time routes out of 168 tracked departures, not the hub's reliability leaders (10 at ≥85%) and not the softest ( 11 below 75%). Destination: Baltimore · fleet on-time rank #3528 of 4927.

What the Data Says About ORD to BWI

16,227 tracked flights put the ORD to BWI pairing (Chicago to Baltimore) at a 79% on-time rate, squarely in line with the wider network. Delays that do occur run 65.8 minutes on average. Across the 622-mile route and its 42 carriers, the trailing 24 months show 1.5% cancelled and 0.2% diverted (5,280 flights sampled).

The monthly split is wide on this route: Feb 2025 posted the strongest performance at 90% on-time, while Dec 2025 came in at just 62% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, ORD–BWI peaks in February at 83.9% on-time while August carries the heaviest traffic (~255 flights per month) ; the softest month is July at 72.2%, a 11.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ORD to BWI rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ORD to BWI ranks #552 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 ORD to BWI? ▼
Flights from Chicago to Baltimore have a 79% on-time rate based on 16,227 flights. The average delay is 65.8 minutes. The best recent month was Feb 2025 with 90% on-time.
What is the cancellation rate for ORD to BWI? ▼
Over the last 24 months, 1.5% of flights on this route were cancelled (78 of 5,280 flights) and 0.2% were diverted.
How far is the flight from ORD to BWI? ▼
The flight distance from Chicago (ORD) to Baltimore (BWI) is approximately 622 miles. This route is served by 42 carriers.
When is the best time to fly from ORD to BWI? ▼
The best recent month for on-time performance was Feb 2025 (90% on-time). The worst was Dec 2025 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

ORD Airport

Chicago
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 ORD–BWI data

ORD–BWI is mid-pack at 79% on-time; month and carrier mix move more than the corridor headline.

  • Compare ORD and BWI airport profiles: delay causes and top routes differ even on the same corridor. ORD airport
  • If your dates flex, February (83.9% on-time) beats July (72.2%) on this corridor. Seasonal chart
  • 4 other routes post a similar 79% 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.