Bellingham International in April 2025

90.5%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 April 2025, reporting carriers scheduled 201 domestic departures from Bellingham International (BLI). 90.5% left less than 15 minutes late and 90.0% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so BLI departures were 9.9 points above the national departure figure.

A year earlier, in April 2024, the airport had 246 departures with 84.6% leaving on time: a change of +5.9 points, with flights down 18%.

Flights arriving at BLI that month were on time 89.6% of the time (202 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 35%, late-arriving aircraft 35% and national aviation system 18%.

On time 90.0%
Arrived 15+ minutes late 10.0%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from BLI 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	BLI, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	90.5%	84.6%	87.3%	80.6%
Arrived on time	90.0%	84.6%	84.4%	79.5%
Cancelled	0.0%	0.8%	1.5%	0.8%
Average departure delay (late minutes only)	4.6 min	9.4 min	10.9 min	14.1 min
Scheduled departures a day	7	8	6	19,465
Scheduled departures	201	246	2,237	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
G4 Allegiant Air	106	53%	98.1%	-11.7 min	0.0%
OO SkyWest Airlines	95	47%	81.1%	5.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BLI–SEA	Bellingham to Seattle	95	81.1%	5.6 min	0.0%
BLI–LAS	Bellingham to Las Vegas	46	97.8%	-12.0 min	0.0%
BLI–PSP	Bellingham to Palm Springs	23	100.0%	-13.3 min	0.0%
BLI–AZA	Bellingham to Phoenix	18	100.0%	-11.2 min	0.0%
BLI–LAX	Bellingham to Los Angeles	11	100.0%	-13.9 min	0.0%
BLI–OAK	Bellingham to Oakland	8	87.5%	-3.5 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	35.2%	32.7%	297
Late-arriving aircraft	34.7%	39.4%	293
National Aviation System	17.8%	22.2%	150
Extreme weather	12.3%	5.5%	104
Security	0.0%	0.2%	0

844 delay minutes on 20 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 BLI on time in April 2025?

90.5% of 201 scheduled domestic departures left less than 15 minutes late, and 90.0% 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, 84.6% of 246 departures left on time and 0.8% were cancelled, against 90.5% and 0.0% 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 BLI · methodology · corrections.