ON TIMEBOARD
BZN Bozeman / PDX Portland

BZN → PDX on time

Bozeman Yellowstone (Bozeman, MT) to Portland (Portland, OR). Every scheduled flight, September 2025 to August 2026.

On time
82%
arrived < 15 min late
Cancelled
1.6%
434 flights
Typical arrival
−7 min
median vs schedule
When late
+58 min
average delay
Flights / day
1
1 airline

82% of flights from Bozeman to Portland arrived on time over the past 12 months. That is better than the typical U.S. route. 6% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for BZN → PDX: when a flight was late, it was under 45 minutes late 56% of the time. About 1 in 24 flights landed an hour or more late, and 1 in 109 three hours or more; 1.6% were cancelled outright.

Share of all 434 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Alaska Airlines43482%1.6%−7 min4.1%+58 minHorizon Air 80%, SkyWest 17%, Alaska Airlines 3%

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at BZN). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%5 a.m. departures: too few flights (41 flights)5a6 a.m. departures: too few flights (15 flights)6a7 a.m. departures: too few flights7a8 a.m. departures: too few flights (13 flights)8a9 a.m. departures: too few flights9a10 a.m. departures: too few flights10a11 a.m. departures: too few flights11anoon departures: too few flights12p1 p.m. departures: too few flights (53 flights)1p2 p.m. departures: too few flights (21 flights)2p3 p.m. departures: too few flights (59 flights)3p4 p.m. departures: 78% on time (232 flights)784p
BZN → PDX, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

By month

Each calendar month pooled over 2023–2026. Best: October (91%). Worst: July (73%).

40%70%100%Jan: too few flights (86 flights)JanFeb: too few flights (73 flights)FebMar: too few flights (87 flights)MarApr: too few flights (90 flights)AprMay: 88% on time (110 flights)88MayJun: 78% on time (120 flights)78JunJul: 73% on time (123 flights)73JulAug: 75% on time (120 flights)75AugSep: 85% on time (104 flights)85SepOct: 91% on time (105 flights)91OctNov: too few flights (81 flights)NovDec: too few flights (99 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday63——
Tuesday64——
Wednesday63——
Thursday63——
Friday63——
Saturday59——
Sunday59——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Late inbound plane 56%Airline (crew, maintenance, ops) 24%Severe weather 13%Air traffic & airport (NAS) 7%

Cancellations: airline 6 · weather 1

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
AS 20214:04 p.m.26478%2.3%−6 minHorizon Air

Questions

How often are flights from BZN to PDX on time?

82% of 434 scheduled flights from Bozeman, MT to Portland, OR arrived within 15 minutes of schedule between September 2025 and August 2026. 1.6% were cancelled.

What month has the most delays from BZN to PDX?

July (73% on time). The best month is October (91%), over 2023–2026.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.