Seattle to Boise (SEA–BOI) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
SEA–BOI is served by 4 airlines with nonstop service. Alaska Airlines, Delta Air Lines and American Airlines lead the route. The flight covers 398 miles in approximately 1h 33m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AS Alaska Airlines Also: AY, DE, FI, HA, JX, KE, QR | 82 | 738, 739, 73H, 7M8, 7M9, B39M, E75, E75L | 1h19-1h35 | Oneworld | AY, DE, FI, HA, JX, KE, QR | |
| DL Delta Air Lines Also: AF, AM, KE, KL, SK, VS, WS | 48 | E75L, E7W | 1h31-1h41 | SkyTeam | AF, AM, KE, KL, SK, VS, WS | |
| AA American Airlines | 0 | – | – | Oneworld | – | |
| OO SkyWest Airlines | 0 | – | – | – | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Boise from Seattle
| Metric | SEA→BOI | BFI→BOI | TIW→BOI |
|---|---|---|---|
| Distance from SEA | – | 5 mi | 18 mi |
| Nonstop airlines | 4 | 3 | 1 |
| Weekly flights | 302 | 1 | – |
| Flight time | 1h 33m | 1h 52m | 1h 10m |
| Departure OTP | 68% | – | – |
Travel Essentials
SEA: PDT · BOI: MDT
When it's 6:00 PM in Seattle, it's 7:00 PM in Boise.
Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).
Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.
SEA–BOI Quick Facts
Frequently Asked Questions
Seattle to Boise: Pacific Northwest to the Treasure Valley
SEA-BOI connects the Pacific Northwest's largest hub to Idaho's capital across 400 miles. Alaska Airlines leads with 5 to 7 daily nonstops. Delta and United add supporting service. Block time is 1 hour 15 to 25 minutes. Alaska has long treated Boise as one of its core Pacific Northwest spoke cities, and BOI is well-connected through SEA to Alaska's West Coast and Hawaii network. The route carries a balanced mix of business and leisure traffic. Micron Technology's headquarters in Boise and HP's printing division drive weekday corporate travel. Outdoor recreation pulls leisure travelers to Idaho year-round.
Boise's Airport and Market Position
Boise Airport is compact and efficient, sitting just 4 miles from downtown. Security wait times are rarely above 15 minutes. The airport has grown steadily as Boise became one of the fastest-expanding metros in the US over the past decade. Population growth has brought new nonstop service from multiple carriers, but SEA remains the top connecting hub for Boise passengers. Salt Lake City (SLC) on Delta is the secondary connecting option. For passengers headed to Sun Valley ski resort, the closer airport is Friedman Memorial (SUN) in Hailey, but BOI offers more schedule options and lower fares for the 2.5-hour drive north on Highway 75.