BLI to SEA flight delays & on-time performance
Nonstop flights from Bellingham International Airport to Seattle–Tacoma International Airport · 93 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BLI or SEA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Bellingham (BLI) to Seattle (SEA) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.1% were cancelled, and 4% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 5am did best (93% on time); around 3pm did worst (72%).
- Saturday was the most reliable day to fly (89% on time) and Friday the least (75%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from BLI to SEA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 83% | 2.1% | 10 min | 4.4% | 1,217 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am93%264 flights
- 6am90%99 flights
- 8am89%115 flights
- 9am76%51 flights
- 11am79%34 flights
- 12pm77%100 flights
- 1pm81%203 flights
- 2pm82%28 flights
- 3pm72%54 flights
- 4pm73%118 flights
- 5pm77%95 flights
- 6pm86%35 flights
- 7pm95%21 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday83%1.7% cancelled
- Tuesday87%1.7% cancelled
- Wednesday85%1.7% cancelled
- Thursday80%2.3% cancelled
- Friday75%2.3% cancelled
- Saturday89%3.4% cancelled
- Sunday83%1.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft42%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion14%
- Extreme weather8%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Air traffic control & airport congestion42%
- Airline (crew, maintenance, cleaning, fueling)8%
- Security0%
BLI to SEA: common questions
- How often are BLI to SEA flights on time?
- 83% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Bellingham to Seattle cancelled?
- 2.1% of scheduled flights were cancelled (26 of 1,217).
- How long are typical delays?
- Across all flights the average arrival delay was 10 min (early arrivals count as zero). Flights that were late arrived 53 min behind schedule on average, and 4.4% of flights were an hour or more late.
- How long is taxi time at BLI?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BLI → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.