Direct (non-stop) flights from SeaTac (SEA) to Boise (BOI)
Find comprehensive flight information, schedules, and booking details for direct flights from SeaTac (SEA) to Boise (BOI). This popular route is operated by 2 airlines, offering multiple daily departures.• Flight Duration: 1h 18m - 1h 44m (average flight time)• Distance: 400 miles (644 km) (air miles between airports)• Daily Flights: 9-15 flights (scheduled departures per day)
SeaTac (SEA)
Boise (BOI)
FLIGHT TIME
1h 18m - 1h 44m
FLIGHT DISTANCE
400 miles (644 km)
1h 22m - 1h 37m
08:11
21:35
400 miles (644 km)
June
2 (Show)
115
Flight Schedule
December 2025
Airlines with direct flights from SeaTac (SEA) to Boise (BOI)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 1h 18m - 1h 44m.
Pricing patterns: June typically offers lower prices due to reduced demand outside peak travel seasons.
Airline service: This route is primarily served by Alaska Airlines and Delta Air Lines, reflecting hub connections and route network strategies.
Best departure times: Peak departure times are 13:00, 8:00, 21:00, offering more flight options and potentially better connections.
SeaTac (SEA) - Boise (BOI) flight price statistics
$168
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$156
Jan$268
Feb$168
Mar$163
Apr$179
May$138
Jun$138
Jul$138
Aug$178
Sep$138
Oct$178
Nov$178
DecRelated Information
Airports: SEA • BOI Airport
Airlines operating this route: Alaska Airlines (AS), Delta Air Lines
Frequently Asked Questions
How many flights operate from SEA to BOI?
There are 14 direct flights operating from SEA to BOI. Approximately 9-15 flights daily.
Which airlines operate flights from SEA to BOI?
2 airlines operate on this route: Alaska Airlines, Delta Air Lines.
How long is the flight from SEA to BOI?
The flight duration from SEA to BOI is approximately 1h 18m - 1h 44m.
What is the distance from SEA to BOI?
The distance from SEA to BOI is 400 miles (644 km).
What is the flight time range for this route?
Flight times on this route range from 1h 22m - 1h 37m.
What are the earliest and latest flight departure times?
The earliest flight departs at 08:11 and the latest flight departs at 21:35.
What is the cheapest month to fly from SEA to BOI?
June is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 115 flights operate per week from SEA to BOI.
What types of aircraft operate on this route?
This route is served by Boeing 737MAX 9 Passenger, Embraer 175 (Enhanced Winglets), Embraer 175, Boeing 737-900 (winglets) Passenger/BBJ3.
What is the average flight price from SEA to BOI?
The average flight price for a round-trip ticket from SEA to BOI is approximately $168 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from SEA to BOI for the lowest prices?
June is typically the cheapest month to fly from SEA to BOI. Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from SEA to BOI?
2 airlines offer direct flights from SEA to BOI, providing travelers with multiple options for scheduling and pricing.
How far is BOI from SEA?
The distance from SEA to BOI is 400 miles (644 km). This is a long-haul flight route.
How long does it take to fly from SEA to BOI?
The flight time from SEA to BOI is approximately 1h 18m - 1h 44m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.