Appleton International in April 2025

84.9%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 April 2025, reporting carriers scheduled 636 domestic departures from Appleton International (ATW). 84.9% left less than 15 minutes late and 79.2% reached their destination on time; 0.5% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so ATW departures were 4.3 points above the national departure figure.

A year earlier, in April 2024, the airport had 514 departures with 85.4% leaving on time: a change of −0.5 points, with flights up 24%.

Flights arriving at ATW that month were on time 81.3% of the time (636 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, national aviation system 30% and late-arriving aircraft 12%.

On time 79.2%
Arrived 15+ minutes late 20.0%
Cancelled 0.5%
Diverted 0.3%

Every scheduled departure from ATW in April 2025, judged by arrival at the destination.

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

Measure	Apr 2025	Apr 2024	ATW, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	84.9%	85.4%	78.0%	80.6%
Arrived on time	79.2%	83.9%	75.6%	79.5%
Cancelled	0.5%	1.0%	2.7%	0.8%
Average departure delay (late minutes only)	12.3 min	26.7 min	21.3 min	14.1 min
Scheduled departures a day	21	17	21	19,465
Scheduled departures	636	514	7,698	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	302	47%	79.1%	7.3 min	0.7%
G4 Allegiant Air	154	24%	79.9%	-2.6 min	0.0%
MQ Envoy Air	147	23%	78.9%	4.5 min	0.0%
DL Delta Air Lines	33	5%	78.8%	5.3 min	3.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ATW–ORD	Appleton to Chicago	227	79.7%	9.9 min	0.9%
ATW–DTW	Appleton to Detroit	84	81.0%	-0.5 min	0.0%
ATW–DEN	Appleton to Denver	35	88.6%	-2.8 min	0.0%
ATW–ATL	Appleton to Atlanta	33	78.8%	5.3 min	3.0%
ATW–CLT	Appleton to Charlotte	32	93.8%	-11.3 min	0.0%
ATW–DFW	Appleton to Dallas/Fort Worth	32	62.5%	17.8 min	0.0%
ATW–MSP	Appleton to Minneapolis	32	68.8%	12.1 min	0.0%
ATW–PGD	Appleton to Punta Gorda	32	90.6%	-15.4 min	0.0%
ATW–SFB	Appleton to Sanford	27	81.5%	-9.7 min	0.0%
ATW–AZA	Appleton to Phoenix	26	69.2%	-0.2 min	0.0%
ATW–PIE	Appleton to St. Petersburg	22	77.3%	23.2 min	0.0%
ATW–SRQ	Appleton to Sarasota/Bradenton	14	85.7%	-2.9 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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	45.9%	32.7%	3,977
Late-arriving aircraft	12.0%	39.4%	1,043
National Aviation System	30.2%	22.2%	2,613
Extreme weather	11.4%	5.5%	984
Security	0.5%	0.2%	40

8,657 delay minutes on 127 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 ATW on time in April 2025?

84.9% of 636 scheduled domestic departures left less than 15 minutes late, and 79.2% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 85.4% of 514 departures left on time and 1.0% were cancelled, against 84.9% and 0.5% in April 2025.

Provenance

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