BLI (Bellingham) to DEN (Denver) flights arrive on time 60% of the time. The most reliable airline on this route is Southwest Airlines at 60%. The average delay is 49 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated October 2026.BLI → DEN
BLI (Bellingham) to DEN (Denver)
BLI → DEN on-time performance by month
24
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is frequently delayed. About 60% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Accurate?
Good to know
Departing from BLI
85% on timeExpect ~16 min sitting on the taxiway after your gate pushes back. BLI has long runway queues.
TSA is currently ~18 min. Best time: 4 AM (about 5 min).
Arriving at DEN
78% on timeWhen flights into DEN are late, the average delay is 68 minutes. Build buffer if you have ground plans.
If connecting at DEN: TSA is ~21 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Southwest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of BLI? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated October 2026. Source: Bureau of Transportation Statistics.