Billings (BIL) to Seattle (SEA) flights
Horizon Air flies nonstop from Billings Logan International Airport to Seattle-Tacoma International Airport, with about 24 flights a week in July 2026. The 664-mile flight takes about 2h 10m gate to gate.
- Distance
- 664 mi · 1,069 km
- Flight time
- 2h 10m
- Airlines
- 1
- Seats filled
- 85%
Airlines flying BIL to SEA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Horizon Air | 24 | Embraer E175 | 58,360 | 2h 10m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
BIL to SEA flight schedule
5 flight numbers flew this route in August 2026, 1 of them almost daily. The first usually leaves at 6:00am and the last at 7:22pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| AS 2247Alaska Airlines · operated by Horizon Air | 6:00am | 7:12am | 18 | 90% |
| AS 2555Alaska Airlines · operated by Horizon Air | 6:14am | 7:20am | 13 | 88% |
| AS 2282Alaska Airlines · operated by Horizon Air | 12:11pm | 1:19pm | 10 | n/a |
| AS 2055Alaska Airlines · operated by Horizon Air | 1:45pm | 2:55pm | 18 | 83% |
| AS 2084Alaska Airlines · operated by Horizon Air | 7:22pm | 8:35pm | 29 | 80% |
Is BIL to SEA on time?
From September 2025 to August 2026, 84% of 917 flights arrived within 15 minutes of schedule and 1.2% were cancelled. Flights leaving around 7am were the most punctual (93%), those around 7pm the least (69%). Most delay time was caused by late-arriving aircraft (39%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 917 | 84% | 10 min | 1.2% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 6am to 7am | 239 | 87% | |
| 7am to 8am | 126 | 93% | |
| 11am to 12pm | 47 | 80% | |
| 1pm to 2pm | 92 | 87% | |
| 2pm to 3pm | 218 | 88% | |
| 7pm to 8pm | 175 | 69% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 88 | 6,085 | |
| September 2025 | 82 | 5,237 | |
| October 2025 | 88 | 5,550 | |
| November 2025 | 77 | 4,511 | |
| December 2025 | 60 | 3,976 | |
| January 2026 | 62 | 3,908 | |
| February 2026 | 55 | 3,478 | |
| March 2026 | 58 | 3,716 | |
| April 2026 | 60 | 3,747 | |
| May 2026 | 81 | 5,421 | |
| June 2026 | 89 | 5,904 | |
| July 2026 | 106 | 6,909 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.