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Route · BMI → ORD · 2020–2025 BTS data

Bloomington/Normal to Chicago

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BMI to ORD (Bloomington/Normal to Chicago) ranks #3715 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

87.7%
On-time
+8.7 pts
vs US avg
74 min
Delay when late
2,193
Flights
#3715 of 4927
Corpus placement

Cancelled

2.5%

Best Month

Jun 2022 98%

Worst Month

Dec 2025 65%

Distance

116 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 79 28 2 0 MQ
Nov 2025 86 13 11 0 MQ
Oct 2025 61 15 0 0 MQ
Sep 2025 60 9 0 0 MQ
Aug 2025 62 4 2 0 MQ
Jul 2025 62 15 1 0 MQ
Jun 2025 64 10 1 0 MQ
May 2025 88 8 0 0 MQ
Apr 2025 54 6 0 0 MQ
Jan 2023 48 7 0 0 MQ
Dec 2022 61 7 1 0 MQ
Nov 2022 59 7 1 0 MQ
Oct 2022 62 5 0 0 MQ
Sep 2022 60 4 0 0 MQ
Aug 2022 62 8 1 0 MQ
Jul 2022 62 8 0 0 MQ
Jun 2022 60 1 0 0 MQ
May 2022 62 4 0 1 MQ
Apr 2022 59 6 2 0 MQ
Mar 2022 45 4 0 0 MQ
Feb 2022 65 11 10 0 MQ
Jan 2022 72 13 3 0 MQ
Dec 2021 73 6 2 0 MQ
Nov 2021 82 4 1 0 MQ

BMI–ORD seasonal on-time pattern

Best: May (94.1%) · weakest: December (80.8%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 80.8%

Strongest calendar month

May

94.1% on-time · ~68 flights/mo

Busiest calendar month

November

~76 flights/mo avg

Weakest calendar month

December

80.8% on-time · ~71 flights/mo

Cancellation Rate

2.5%

38 of 1,548 flights

Diversion Rate

0.1%

1 of 1,548 flights

Explore origin & destination

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

BMI - Bloomington/Normal

Full on-time, delay-cause, and seasonal performance for Bloomington/Normal, IL.

BMI on-time profile

ORD - Chicago

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

ORD on-time profile

Compare the two airports

See BMI and ORD side by side on delays, cancellations, and reliability.

Compare BMI vs ORD

Origin-hub reliability standing

Among BMI's stronger departures

BMI → ORD posts a 87.7% on-time rate, landing in the ≥85% band with 2 of 3 BTS-tracked routes leaving Bloomington/Normal. The same hub also shows 1 mid-band and 0 challenged departures · fleet-wide on-time rank #473 of 4927 (highest on-time = #1).

What the Data Says About BMI to ORD

Bloomington/Normal to Chicago (BMI to ORD) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.7% on-time rate across 2,193 flights, with delays that do happen averaging 74.1 minutes. The corridor runs roughly 116 miles and is served by 1 carrier. Over the most recent 24 months, 38 of 1,548 flights were cancelled (2.5%) and 1 diverted (0.1%).

The monthly split is wide on this route: Jun 2022 posted the strongest performance at 98% on-time, while Dec 2025 came in at just 65% - a 34-point swing worth factoring into travel timing.

On the multi-year calendar, BMI–ORD peaks in May at 94.1% on-time while November carries the heaviest traffic (~76 flights per month) ; the softest month is December at 80.8%, a 13.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BMI to ORD rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BMI to ORD ranks #3715 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 BMI to ORD? ▼
Flights from Bloomington/Normal to Chicago have a 87.7% on-time rate based on 2,193 flights. The average delay is 74.1 minutes. The best recent month was Jun 2022 with 98% on-time.
What is the cancellation rate for BMI to ORD? ▼
Over the last 24 months, 2.5% of flights on this route were cancelled (38 of 1,548 flights) and 0.1% were diverted.
How far is the flight from BMI to ORD? ▼
The flight distance from Bloomington/Normal (BMI) to Chicago (ORD) is approximately 116 miles. This route is served by 1 carrier.
When is the best time to fly from BMI to ORD? ▼
The best recent month for on-time performance was Jun 2022 (98% on-time). The worst was Dec 2025 (65% on-time). Consider booking during months with historically better performance.

Airports on this route

BMI Airport

Bloomington/Normal
ORD Airport

Chicago
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 BMI–ORD data

BMI–ORD runs 8.7 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare BMI and ORD airport profiles: delay causes and top routes differ even on the same corridor. BMI airport
  • If your dates flex, May (94.1% on-time) beats December (80.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 87.7% 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.