Mahlon Sweet Field in December 2023

82.3%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 December 2023, reporting carriers scheduled 662 domestic departures from Mahlon Sweet Field (EUG). 82.3% left less than 15 minutes late and 84.0% reached their destination on time; 0.5% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so EUG departures were 0.8 points below the national departure figure.

Flights arriving at EUG that month were on time 83.1% of the time (662 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 41%, extreme weather 30% and national aviation system 15%.

On time 84.0%
Arrived 15+ minutes late 15.4%
Cancelled 0.5%
Diverted 0.2%

Every scheduled departure from EUG in December 2023, judged by arrival at the destination.

December 2023 against a year earlier, the airport's year and the nation

Measure	Dec 2023	Year earlier	EUG, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	82.3%	—	82.3%	83.1%
Arrived on time	84.0%	—	82.0%	83.8%
Cancelled	0.5%	—	0.7%	0.4%
Average departure delay (late minutes only)	22.7 min	—	13.7 min	11.6 min
Scheduled departures a day	22	—	24	19,013
Scheduled departures	662	—	8,899	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	233	35%	85.0%	14.2 min	0.4%
WN Southwest Airlines	180	27%	85.6%	3.7 min	0.6%
UA United Airlines	122	18%	79.5%	13.7 min	0.0%
AA American Airlines	62	9%	83.9%	59.2 min	0.0%
G4 Allegiant Air	37	6%	78.4%	12.6 min	2.7%
AS Alaska Airlines	28	4%	92.9%	0.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
EUG–SEA	Eugene to Seattle	103	85.4%	11.4 min	1.0%
EUG–DEN	Eugene to Denver	93	87.1%	-1.5 min	1.1%
EUG–PHX	Eugene to Phoenix	62	83.9%	80.0 min	0.0%
EUG–SFO	Eugene to San Francisco	62	72.6%	28.5 min	0.0%
EUG–SLC	Eugene to Salt Lake City	62	93.5%	4.7 min	0.0%
EUG–OAK	Eugene to Oakland	59	84.7%	7.9 min	0.0%
EUG–LAS	Eugene to Las Vegas	42	85.7%	3.4 min	0.0%
EUG–LAX	Eugene to Los Angeles	40	70.0%	14.7 min	0.0%
EUG–DFW	Eugene to Dallas/Fort Worth	32	84.4%	3.0 min	0.0%
EUG–SAN	Eugene to San Diego	31	87.1%	5.7 min	0.0%
EUG–SJC	Eugene to San Jose	31	80.6%	6.1 min	0.0%
EUG–BUR	Eugene to Burbank	26	92.3%	-4.8 min	0.0%

By scheduled departure hour

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	40.5%	37.1%	5,636
Late-arriving aircraft	15.0%	38.8%	2,082
National Aviation System	15.1%	17.6%	2,098
Extreme weather	29.5%	6.2%	4,105
Security	0.0%	0.3%	0

13,921 delay minutes on 102 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 December 2023?

82.3% of 662 scheduled domestic departures left less than 15 minutes late, and 84.0% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2023; 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.