Airports › Montana
Airport · 12 months to July 2026
Billings Logan International: delays and on-time record
Billings, Montana
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report. Data through July 2026; this is a monthly history, not live airport status.
Billings Logan International (BIL) in Billings, Montana had 4,642 scheduled domestic departures by reporting carriers in the 12 months to July 2026, about 13 a day, on 8 routes.
87.4% of those flights left the gate less than 15 minutes late, 11.3 points above the national departure figure of 76.1%. Flights arriving at BIL were on time 82.6% of the time, 6.6 points above the national arrival figure of 76.0%.
0.6% of scheduled departures were cancelled (national: 1.8%), and the average departure delay, counting early and on-time departures as zero, was 11.8 min.
SkyWest Airlines is the largest reporting carrier at BIL with 40% of departures. Among carriers with at least 120 departures, Delta Air Lines had the highest on-time arrival share for its BIL departures (92.3%) and Allegiant Air the lowest (82.4%).
On-time departures are up 2.1 points on the previous 12 months (85.3%).
Of the delay minutes that carriers assigned to a BTS cause category for flights leaving BIL, air carrier 43%, late-arriving aircraft 27% and national aviation system 19%.
- On time 84.7%
- Arrived 15+ minutes late 14.2%
- Cancelled 0.6%
- Diverted 0.5%
As origin and as destination, against the nation
| Measure | Departures from BIL | Arrivals at BIL | All reported flights | BIL departures, previous 12 months |
|---|---|---|---|---|
| Departed on time (less than 15 min late) | 87.4% | 82.9% | 76.1% | 85.3% |
| Arrived on time | 84.7% | 82.6% | 76.0% | 81.2% |
| Cancelled | 0.6% | 0.6% | 1.8% | 0.7% |
| Diverted | 0.5% | 0.3% | 0.3% | 0.4% |
| Average departure delay (late minutes only) | 11.8 min | 10.8 min | 17.4 min | 14.6 min |
| Arrival delay minutes per 100 flights | 1,249 | 1,062 | 1,684 | 1,648 |
| Scheduled flights | 4,642 | 4,641 | 7,043,858 | 4,628 |
12 months to July 2026. The first column follows flights that left BIL; the second follows flights that landed there. Year on year, on-time departures moved +2.1 pts.
Airlines at BIL
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| OO SkyWest Airlines | 1,843 | 40% | 83.9% | 0.8 min | 0.9% |
| MQ Envoy Air | 1,032 | 22% | 82.8% | 0.2 min | 0.5% |
| DL Delta Air Lines | 731 | 16% | 92.3% | -7.3 min | 0.5% |
| UA United Airlines | 729 | 16% | 82.4% | 0.0 min | 0.1% |
| G4 Allegiant Air | 307 | 7% | 82.4% | 8.6 min | 0.3% |
Departures from BIL by reporting carrier, ordered by flights; on time means the flight reached its destination less than 15 minutes late. Green is at or above the airport's overall share of 84.7%. Carriers fly different routes at different hours, so the rows are not a like-for-like test.
Busiest routes from BIL
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BIL–DEN | Billings to Denver | 1,778 | 81.3% | 1.8 min | 0.7% |
| BIL–SLC | Billings to Salt Lake City | 1,074 | 90.9% | -5.6 min | 0.6% |
| BIL–DFW | Billings to Dallas/Fort Worth | 691 | 82.8% | -2.5 min | 0.6% |
| BIL–MSP | Billings to Minneapolis | 365 | 91.0% | -4.2 min | 0.8% |
| BIL–ORD | Billings to Chicago | 317 | 79.2% | 13.1 min | 0.3% |
| BIL–AZA | Billings to Phoenix | 178 | 80.9% | 10.8 min | 0.6% |
| BIL–LAS | Billings to Las Vegas | 129 | 84.5% | 5.6 min | 0.0% |
| BIL–PHX | Billings to Phoenix | 110 | 90.9% | -14.9 min | 0.0% |
Routes with at least 10 flights a month have their own page.
Month by month
By scheduled departure hour
Among hours with at least 93 departures, 5 am to 6 am had the highest on-time share (95.0% of 685 flights) and 5 pm to 6 pm the lowest (71.0% of 290).
Delay causes
Cancellations by reported reason (28 in the period): air carrier 18%, weather 54%, national aviation system 29%, security 0%.
Checkpoint volumes
TSA publishes daily checkpoint passenger counts for the country as a whole, not for BIL on its own. The national series through September 2026 is on the checkpoint volumes page.
Questions and answers
How often do flights leave BIL on time?
87.4% of the 4,642 scheduled domestic departures in the 12 months to July 2026 left less than 15 minutes late; the national figure was 76.1%. 0.6% were cancelled.
How often do flights arrive at BIL on time?
82.6% of 4,641 scheduled arrivals were on time by the BTS definition, against 76.0% nationally.
Which airline has the highest on-time share at BIL?
Counting departures from BIL and whether they reached their destination on time, Delta Air Lines had the highest share (92.3% of 731 flights), then SkyWest Airlines (83.9%) and Envoy Air (82.8%). Carriers fly different routes at different hours, so the figures are not a like-for-like test.
What causes delays at BIL?
For departures from BIL that reached their destination 15 or more minutes late, carriers attributed the delay minutes as follows: air carrier 43%, late-arriving aircraft 27%, national aviation system 19%, extreme weather 12%, security 0%.
What time of day has the highest on-time share at BIL?
Departures scheduled from 5 am to 6 am local time left on time 95.0% of the time, the highest of any hour with enough flights to compare; 5 pm to 6 pm was lowest at 71.0%.
Is it getting better?
On-time departures for the 12 months to July 2026 were 87.4%, up 2.1 points on the previous 12 months (85.3%). The monthly chart shows each of the last 36 months, and each month has its own page.
Does this page show today's delays at BIL?
No. BTS publishes on-time records about two months after the month ends, so this page is a monthly history through July 2026. For live conditions use the FAA airport status service or your airline.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987 to present), monthly files August 2023 to July 2026; airport name from the BTS airport lookup table. US government works in the public domain. Domestic scheduled flights by reporting carriers only: international flights, charters and smaller carriers are not in the source. Totals and averages only; no individual flight or aircraft is identified. See the methodology; report processing errors through corrections.