Mahlon Sweet Field in May 2025

82.9%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 May 2025, reporting carriers scheduled 696 domestic departures from Mahlon Sweet Field (EUG). 82.9% left less than 15 minutes late and 83.3% reached their destination on time; 0.6% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so EUG departures were 6.2 points above the national departure figure.

A year earlier, in May 2024, the airport had 588 departures with 81.1% leaving on time: a change of +1.8 points, with flights up 18%.

Flights arriving at EUG that month were on time 81.6% of the time (697 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 59%, late-arriving aircraft 19% and national aviation system 19%.

On time 83.3%
Arrived 15+ minutes late 15.7%
Cancelled 0.6%
Diverted 0.4%

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

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

Measure	May 2025	May 2024	EUG, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	82.9%	81.1%	82.3%	76.7%
Arrived on time	83.3%	81.5%	82.0%	75.4%
Cancelled	0.6%	1.0%	0.7%	1.0%
Average departure delay (late minutes only)	15.8 min	12.3 min	13.7 min	17.5 min
Scheduled departures a day	23	20	24	20,188
Scheduled departures	696	588	8,899	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	318	46%	84.9%	0.1 min	0.6%
UA United Airlines	124	18%	78.2%	14.0 min	0.8%
WN Southwest Airlines	111	16%	82.9%	2.1 min	0.0%
AA American Airlines	66	9%	80.3%	57.4 min	0.0%
AS Alaska Airlines	48	7%	87.5%	3.7 min	2.1%
G4 Allegiant Air	29	4%	89.7%	-1.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
EUG–SEA	Eugene to Seattle	175	88.0%	-1.5 min	0.6%
EUG–DEN	Eugene to Denver	93	65.6%	20.4 min	2.2%
EUG–SFO	Eugene to San Francisco	84	84.5%	8.8 min	1.2%
EUG–SLC	Eugene to Salt Lake City	62	93.5%	-7.3 min	0.0%
EUG–LAX	Eugene to Los Angeles	45	86.7%	-1.5 min	0.0%
EUG–LAS	Eugene to Las Vegas	40	72.5%	8.1 min	0.0%
EUG–PHX	Eugene to Phoenix	35	85.7%	60.4 min	0.0%
EUG–DFW	Eugene to Dallas/Fort Worth	31	74.2%	54.1 min	0.0%
EUG–OAK	Eugene to Oakland	31	77.4%	8.2 min	0.0%
EUG–SAN	Eugene to San Diego	31	83.9%	4.0 min	0.0%
EUG–SMF	Eugene to Sacramento	31	100.0%	-10.3 min	0.0%
EUG–SJC	Eugene to San Jose	18	88.9%	0.7 min	0.0%

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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	58.9%	29.3%	6,147
Late-arriving aircraft	19.3%	37.8%	2,011
National Aviation System	19.1%	25.9%	1,992
Extreme weather	2.7%	6.9%	277
Security	0.1%	0.1%	10

10,437 delay minutes on 109 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 May 2025?

82.9% of 696 scheduled domestic departures left less than 15 minutes late, and 83.3% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 81.1% of 588 departures left on time and 1.0% were cancelled, against 82.9% and 0.6% in May 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 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.