Mahlon Sweet Field in August 2025

80.5%departed on time

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.

In August 2025, reporting carriers scheduled 735 domestic departures from Mahlon Sweet Field (EUG). 80.5% left less than 15 minutes late and 80.5% reached their destination on time; 0.5% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so EUG departures were 3.7 points above the national departure figure.

A year earlier, in August 2024, the airport had 564 departures with 84.2% leaving on time: a change of −3.7 points, with flights up 30%.

Flights arriving at EUG that month were on time 80.5% of the time (734 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 33% and national aviation system 19%.

On time 80.5%
Arrived 15+ minutes late 18.2%
Cancelled 0.5%
Diverted 0.7%

Every scheduled departure from EUG in August 2025, judged by arrival at the destination.

August 2025 against a year earlier, the airport's year and the nation

Measure	Aug 2025	Aug 2024	EUG, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	80.5%	84.2%	82.3%	76.8%
Arrived on time	80.5%	84.0%	82.0%	76.3%
Cancelled	0.5%	0.4%	0.7%	1.1%
Average departure delay (late minutes only)	13.1 min	13.3 min	13.7 min	17.6 min
Scheduled departures a day	25	19	24	20,079
Scheduled departures	735	564	8,899	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	339	46%	84.7%	-1.3 min	0.3%
WN Southwest Airlines	140	19%	77.9%	5.5 min	0.7%
UA United Airlines	124	17%	78.2%	5.4 min	0.8%
AS Alaska Airlines	75	10%	77.3%	8.3 min	1.3%
AA American Airlines	36	5%	72.2%	18.5 min	0.0%
G4 Allegiant Air	21	3%	71.4%	104.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
EUG–SEA	Eugene to Seattle	196	85.2%	-0.9 min	0.5%
EUG–DEN	Eugene to Denver	121	66.9%	15.0 min	0.8%
EUG–SFO	Eugene to San Francisco	93	77.4%	3.0 min	1.1%
EUG–SLC	Eugene to Salt Lake City	62	91.9%	-1.0 min	0.0%
EUG–LAS	Eugene to Las Vegas	41	65.9%	57.7 min	0.0%
EUG–LAX	Eugene to Los Angeles	32	93.8%	-7.9 min	0.0%
EUG–OAK	Eugene to Oakland	31	80.6%	-1.0 min	0.0%
EUG–PDX	Eugene to Portland	31	93.5%	-6.7 min	0.0%
EUG–PHX	Eugene to Phoenix	31	80.6%	6.0 min	0.0%
EUG–SAN	Eugene to San Diego	31	77.4%	3.4 min	0.0%
EUG–SMF	Eugene to Sacramento	31	96.8%	-4.6 min	0.0%
EUG–SJC	Eugene to San Jose	18	72.2%	5.6 min	5.6%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	44.9%	33.1%	4,063
Late-arriving aircraft	32.9%	40.5%	2,981
National Aviation System	19.1%	19.2%	1,733
Extreme weather	3.1%	7.0%	279
Security	0.0%	0.1%	0

9,056 delay minutes on 134 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left EUG on time in August 2025?

80.5% of 735 scheduled domestic departures left less than 15 minutes late, and 80.5% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 84.2% of 564 departures left on time and 0.4% were cancelled, against 80.5% and 0.5% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for EUG · methodology · corrections.