Bellingham International in May 2025

91.0%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 212 domestic departures from Bellingham International (BLI). 91.0% left less than 15 minutes late and 89.2% reached their destination on time; 0.0% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so BLI departures were 14.3 points above the national departure figure.

A year earlier, in May 2024, the airport had 244 departures with 88.9% leaving on time: a change of +2.1 points, with flights down 13%.

Flights arriving at BLI that month were on time 84.4% of the time (212 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 53%, late-arriving aircraft 37% and national aviation system 10%.

On time 89.2%
Arrived 15+ minutes late 10.8%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from BLI 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	BLI, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	91.0%	88.9%	87.3%	76.7%
Arrived on time	89.2%	91.8%	84.4%	75.4%
Cancelled	0.0%	0.0%	1.5%	1.0%
Average departure delay (late minutes only)	6.1 min	7.4 min	10.9 min	17.5 min
Scheduled departures a day	7	8	6	20,188
Scheduled departures	212	244	2,237	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	119	56%	84.9%	5.5 min	0.0%
G4 Allegiant Air	93	44%	94.6%	-8.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BLI–SEA	Bellingham to Seattle	119	84.9%	5.5 min	0.0%
BLI–LAS	Bellingham to Las Vegas	49	95.9%	-11.9 min	0.0%
BLI–OAK	Bellingham to Oakland	13	100.0%	-11.6 min	0.0%
BLI–AZA	Bellingham to Phoenix	11	90.9%	4.7 min	0.0%
BLI–LAX	Bellingham to Los Angeles	9	88.9%	-3.8 min	0.0%
BLI–PSP	Bellingham to Palm Springs	8	87.5%	-5.2 min	0.0%
BLI–SAN	Bellingham to San Diego	3	100.0%	-9.0 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	53.1%	29.3%	680
Late-arriving aircraft	36.9%	37.8%	473
National Aviation System	10.0%	25.9%	128
Extreme weather	0.0%	6.9%	0
Security	0.0%	0.1%	0

1,281 delay minutes on 23 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 May 2025?

91.0% of 212 scheduled domestic departures left less than 15 minutes late, and 89.2% 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, 88.9% of 244 departures left on time and 0.0% were cancelled, against 91.0% and 0.0% 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 BLI · methodology · corrections.