Direct (non-stop) flights from Boise (BOI) to SeaTac (SEA)
Find comprehensive flight information, schedules, and booking details for direct flights from Boise (BOI) to SeaTac (SEA). This popular route is operated by 2 airlines, offering multiple daily departures.• Flight Duration: 1h 25m - 2h 11m (average flight time)• Distance: 400 miles (644 km) (air miles between airports)• Daily Flights: 10-15 flights (scheduled departures per day)
Boise (BOI)
SeaTac (SEA)
FLIGHT TIME
1h 25m - 2h 11m
FLIGHT DISTANCE
400 miles (644 km)
1h 37m - 2h 11m
05:20
21:42
400 miles (644 km)
January
2 (Show)
96
Flight Schedule
December 2025
Airlines with direct flights from Boise (BOI) to SeaTac (SEA)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 1h 25m - 2h 11m.
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Airline service: This route is primarily served by Delta Air Lines and Alaska Airlines, reflecting hub connections and route network strategies.
Best departure times: Peak departure times are 9:00, 11:00, 16:00, offering more flight options and potentially better connections.
Boise (BOI) - SeaTac (SEA) flight price statistics
$186
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.
$136
Jan$263
Feb$163
Mar$163
Apr$478
May$138
Jun$138
Jul$138
Aug$138
Sep$138
Oct$138
Nov$198
DecRelated Information
Airports: BOI • SEA Airport
Airlines operating this route: Delta Air Lines (DL), Alaska Airlines
Frequently Asked Questions
How many flights operate from BOI to SEA?
There are 15 direct flights operating from BOI to SEA. Approximately 10-15 flights daily.
Which airlines operate flights from BOI to SEA?
2 airlines operate on this route: Delta Air Lines, Alaska Airlines.
How long is the flight from BOI to SEA?
The flight duration from BOI to SEA is approximately 1h 25m - 2h 11m.
What is the distance from BOI to SEA?
The distance from BOI to SEA is 400 miles (644 km).
What is the flight time range for this route?
Flight times on this route range from 1h 37m - 2h 11m.
What are the earliest and latest flight departure times?
The earliest flight departs at 05:20 and the latest flight departs at 21:42.
What is the cheapest month to fly from BOI to SEA?
January is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 96 flights operate per week from BOI to SEA.
What types of aircraft operate on this route?
This route is served by Embraer 175 (Enhanced Winglets), Boeing 737-800 (winglets) Passenger/BBJ2, Embraer 175, Boeing 737MAX 9 Passenger.
What is the average flight price from BOI to SEA?
The average flight price for a round-trip ticket from BOI to SEA is approximately $186 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from BOI to SEA for the lowest prices?
January is typically the cheapest month to fly from BOI to SEA. Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from BOI to SEA?
2 airlines offer direct flights from BOI to SEA, providing travelers with multiple options for scheduling and pricing.
How far is SEA from BOI?
The distance from BOI to SEA is 400 miles (644 km). This is a long-haul flight route.
How long does it take to fly from BOI to SEA?
The flight time from BOI to SEA is approximately 1h 25m - 2h 11m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.