Seattle to Boise (SEA–BOI) — Airlines, Schedules & Connections
Flight Schedule
99 flights
Verified 18m ago
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No nonstop flights on this route. connecting options below.
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Seattle to Boise
4 carriers, 298 flights/week nonstop.
4 Airlines
298 Flights/wk
398 mi
1h 25m nonstop
+1h ahead
56 1-stop hubs
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 25m. Beyond nonstop, 56 hubs offer 1-stop connections.
Carriers on this route
Airline Landscape
All carriers operating nonstop SEA–BOI service, compared side by side.
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AS Alaska Airlines Also: DE, FI, HA, JX, KE, QR | 93 | 739, 73H, 73J, E75, E75L | 1h26-1h38 | Oneworld | DE, FI, HA, JX, KE, QR | |
| DL Delta Air Lines Also: AF, AM, KE, KL, VS, WS | 48 | E75L, E7W | 1h34-1h41 | SkyTeam | AF, AM, KE, KL, VS, WS | |
| AA American Airlines | 1 | – | 1h25 | Oneworld | – | |
| OO SkyWest Airlines | 1 | – | 1h27 | – | – |
Aircraft on this route
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Schedule
Weekly Schedule Pattern
Nonstop flight frequency by day of week, SEA to BOI direction.
Mon
43
flights
Tue
44
flights
Wed
42
flights
Thu
42
flights
Fri
42
flights
Sat
41
flights
Sun
44
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
47
Nonstop flights
298
Outbound / wk
348
Return / wk
Connections
Connection Landscape
Beyond nonstop. 1-stop and 2-stop options for SEA to BOI.
1-STOP
One-Stop Connections
56
Hubs
~2h
Fastest
~23h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
1,318
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Alternatives
Other ways to reach Boise from Seattle
Nearby airports with service to Boise Air Terminal/Gowen Field.
| Metric | SEA→BOI | BFI→BOI | PAE→BOI |
|---|---|---|---|
| Distance from SEA | – | 5 mi | 32 mi |
| Nonstop airlines | 4 | 2 | 1 |
| Weekly flights | 298 | 1 | 2 |
| Flight time | 1h 25m | 1h 3m | 1h 36m |
| Departure OTP | 75% | – | – |
Airports within 200 miles of SEA with service to Boise Air Terminal/Gowen Field.
Know before you go
Travel Essentials
Practical planning for this route.
Time Difference
+1h
Boise is 1 hour
ahead of
Seattle.
SEA: PDT · BOI: MDT
When it's 6:00 PM in Seattle, it's 7:00 PM in Boise.
SEA: PDT · BOI: MDT
When it's 6:00 PM in Seattle, it's 7:00 PM in Boise.
Distance & Flight Time
398 mi / 641 km
Nonstop flight time is approximately 1h 25m to 1h 41m.
Getting to SEA
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.
Facts
SEA–BOI Quick Facts
Key statistics for the Seattle to Boise route.
Route details
Distance398 mi / 641 km
Flight time1h 25m to 1h 41m
Time difference+1 hour
Airlines (nonstop)4
Weekly flights298 out / 348 return
1-stop connections56 hubs
Origin: SEA
Full nameSeattle–Tacoma International Airport
IATA / ICAOSEA / KSEA
TimezoneAmerica/Los_Angeles
Passengers/yr52.6M
Elevation433 ft / 132 m
Destination: BOI
Full nameBoise Air Terminal/Gowen Field
IATA / ICAOBOI / KBOI
TimezoneAmerica/Boise
Passengers/yr5.0M
Elevation2,871 ft / 875 m
FAQ
Frequently Asked Questions
Common questions about SEA to BOI flights.
Nonstop flights from Seattle–Tacoma International Airport to Boise Air Terminal/Gowen Field take approximately 1h 25m to 1h 41m. The route covers 398 miles.
4 airlines operate nonstop service: American Airlines, Alaska Airlines, Delta Air Lines and SkyWest Airlines. Plus 11 codeshare partners.
There are approximately 298 nonstop flights per week from SEA to BOI. The return direction has about 348 weekly flights.
Yes, 1-stop connections are available through BFI, EUG, YVR, YYC, IDA, YLW, RNO, GTF, HLN, BZN, PAE, YEG, EGE, MSO, SBD, SCF, BIL, PSP, DAL, AZA, OKC, MKC, OMA, TUS, SAT, MCI, MDW, ELP, STL, TUL, MSN, YYZ, BNA, CLT, MIA, BOS, LAX, SLC, PDX, GEG, SMF, OAK, SFO, PUW, LAS, DEN, MSP, SJC, ONT, PHX, DFW, SNA, BUR, ATL, SAN and ORD. These options provide additional schedule flexibility.
Boise is 1 hour ahead of Seattle.
Yes, return flights from BOI to SEA are available. Use the direction toggle at the top to view the return schedule.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.
Alaska Airlines operates 5 to 7 daily nonstops on SEA-BOI. Delta runs 2 to 3 daily departures. United adds 1 to 2 daily nonstops seasonally. The sector is 400 miles with a block time of 1 hour 15 minutes to 1 hour 25 minutes. Alaska flies 737-700 and E175 equipment on the route. Delta uses A220-100 and E175.
Boise Airport (BOI) is 4 miles south of downtown. A taxi or rideshare takes 10 to 12 minutes and costs $12 to $18. ValleyRide bus Route 3 runs between the airport and downtown with limited frequency. The airport has a single terminal with two concourses. Parking is directly in front of the terminal. Economy parking is $7 per day. BOI is one of the easiest airports in the US to get in and out of quickly.
Both. A large share of BOI passengers are connecting at Seattle to Alaska's network, especially for flights to Hawaii, California, and Alaska. Point-to-point demand between Seattle and Boise is also strong. Boise's tech sector, including Micron and HP, generates weekday business travel to Seattle. Weekend leisure traffic runs in both directions, with Seattle residents heading to Idaho for outdoor recreation and Boise residents visiting the Seattle metro.
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.