Route · BIL → ORD · 2020–2025 BTS data

Billings to Chicago

The BIL–ORD corridor (Billings, MT → Chicago, IL) runs behind the national average, served by 3 carriers across roughly 1,060 miles.

Compiled by PlainFlights Editorial, Flight Performance Editorial Team

Data updated 2026-06-13

78.5%
On-time: -0.5 pts
vs US avg: 90 min
Delay when late: 632
Flights

Cancelled

0.2%

Best Month

Oct 2025 85%

Worst Month

Jul 2025 70%

Distance

1,060 mi

Carriers

Monthly Performance

Recent 24 months of route data.

Period	Flights	Delayed	Cancelled	Diverted	Carriers
Oct 2025	61	9	0	0	OO,MQ
Sep 2025	90	18	0	0	MQ,OO
Aug 2025	93	17	1	3	OO,MQ
Jul 2025	93	28	0	1	OO,MQ
Jun 2025	81	19	0	0	OO,MQ
Sep 2024	30	2	0	0	MQ
Aug 2024	31	5	0	1	MQ
Jul 2024	31	8	0	1	MQ
Jul 2023	31	9	0	0	MQ
Jun 2023	30	8	0	0	MQ
Jul 2022	31	7	0	0	MQ
Jul 2021	30	6	0	0	MQ

Cancellation Rate

0.2%

1 of 632 flights

Diversion Rate

0.9%

6 of 632 flights

Explore origin & destination

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

BIL - Billings

Full on-time, delay-cause, and seasonal performance for Billings, MT.

Origin airport →

ORD - Chicago

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

Destination airport →

Compare the two airports

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

Open comparison tool →

Similar routes

Other BTS-tracked routes with comparable performance or trip length to BIL–ORD.

Routes with a similar on-time rate

ORD → BOS

Chicago to Boston

78.5% on-time

SFO → LAS

San Francisco to Las Vegas

78.5% on-time

PHX → SFO

Phoenix to San Francisco

78.5% on-time

EWR → IAH

Newark to Houston

78.5% on-time

Routes of a similar trip length

PIT → DAL

Pittsburgh to Dallas

1,060 mi

DAL → PIT

Dallas to Pittsburgh

1,060 mi

RDU → DFW

Raleigh/Durham to Dallas/Fort Worth

1,061 mi

DFW → RDU

Dallas/Fort Worth to Raleigh/Durham

1,061 mi

What the Data Says About BIL to ORD

632 tracked flights put the BIL to ORD pairing (Billings to Chicago) at a 78.5% on-time rate, squarely in line with the wider network. Delays that do occur run 89.6 minutes on average. Across the 1,060-mile route and its 3 carriers, the trailing 24 months show 0.2% cancelled and 0.9% diverted (632 flights sampled).

The monthly split is wide on this route: Oct 2025 posted the strongest performance at 85% on-time, while Jul 2025 came in at just 70% - a 15-point swing worth factoring into travel timing.

Frequently Asked Questions

How often are flights delayed from BIL to ORD? ▼

Flights from Billings to Chicago have a 78.5% on-time rate based on 632 flights. The average delay is 89.6 minutes. The best recent month was Oct 2025 with 85% on-time.

What is the cancellation rate for BIL to ORD? ▼

Over the last 24 months, 0.2% of flights on this route were cancelled (1 of 632 flights) and 0.9% were diverted.

How far is the flight from BIL to ORD? ▼

The flight distance from Billings (BIL) to Chicago (ORD) is approximately 1,060 miles. This route is served by 3 carriers.

When is the best time to fly from BIL to ORD? ▼

The best recent month for on-time performance was Oct 2025 (85% on-time). The worst was Jul 2025 (70% on-time). Consider booking during months with historically better performance.

Flight Guides

Tips and data-driven advice for choosing reliable routes.

How to Choose Reliable Flight Routes

Use delay data to pick flights that arrive on time

Best & Worst Airlines for On-Time Performance

Which carriers consistently outperform peers

Why Flights Get Cancelled

Cancellation causes broken down by data

Explore PlainFlights

Billings

Chicago

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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.

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 Editorial

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.