SEA to BLI flight delays & on-time performance
Nonstop flights from Seattle–Tacoma International Airport to Bellingham International Airport · 93 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SEA or BLI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Seattle (SEA) to Bellingham (BLI) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.3% 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 8pm did best (91% on time); around 9pm did worst (70%).
- Wednesday was the most reliable day to fly (90% on time) and Friday the least (76%).
- The largest source of delay minutes was late-arriving aircraft (49%).
Which airline is most on time from SEA to BLI?
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. | 85% | 2.3% | 9 min | 4.0% | 1,216 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am85%34 flights
- 11am80%250 flights
- 12pm86%80 flights
- 2pm81%172 flights
- 3pm81%68 flights
- 4pm83%63 flights
- 5pm90%21 flights
- 8pm91%119 flights
- 9pm70%46 flights
- 11pm91%363 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday88%1.1% cancelled
- Tuesday87%1.7% cancelled
- Wednesday90%4.0% cancelled
- Thursday82%1.2% cancelled
- Friday76%2.8% cancelled
- Saturday89%3.4% cancelled
- Sunday84%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 aircraft49%
- Airline (crew, maintenance, cleaning, fueling)30%
- Air traffic control & airport congestion16%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Air traffic control & airport congestion39%
- Airline (crew, maintenance, cleaning, fueling)11%
- Security0%
SEA to BLI: common questions
- How often are SEA to BLI flights on time?
- 85% 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 Seattle to Bellingham cancelled?
- 2.3% of scheduled flights were cancelled (28 of 1,216).
- How long are typical delays?
- Across all flights the average arrival delay was 9 min (early arrivals count as zero). Flights that were late arrived 51 min behind schedule on average, and 4.0% of flights were an hour or more late.
- How long is taxi time at SEA?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BLI to SEA — 83% on time
More flights from Seattle
More flights to Bellingham
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SEA → BLI, nonstop flights by US airlines that report to the DOT. How we calculate this.