Flights operate between Seattle (SEA) and Boise (BOI).
1 airline operates this route with 9-15 flights daily flights.
Average flight time is 1h 18m - 1h 44m.
Route distance is 400 miles (644 km).
Route Distance
400 miles (644 km)
Average Duration
1h 18m - 1h 44m
Airlines Operating This Route
Delta Air Lines
Flight Frequency
Daily Flights
9-15 flights
Weekly Flights
115
Typical Departure Time Ranges
Earliest Departure
08:30
Latest Departure
21:35
Route Intelligence Dashboard
Overall Connectivity Score
70
GoodRoute Diversity
1
Direct Routes
Delta Air Lines serves 1 destination from SEA
Weekly Frequency
49
Weekly Flights
Trend: Stable
Top 1 Most Frequent Routes - Details
| Route | Weekly Flights | Duration | Distance | Reliability |
|---|---|---|---|---|
| SEA → Boise (BOI) (BOI) | 49/week | 1h 18m - 1h 44m | 400 km | Very Stable |
Flight Schedule & Filters
Delta Air Lines flights from SeaTac (SEA) to Boise (BOI)
Delta Air Lines operates scheduled nonstop flights between SeaTac (SEA) and Boise (BOI). Delta Air Lines operates 9-15 flights daily flights on this route.• 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)
US
Boise (BOI)
US
FLIGHT TIME
1h 18m - 1h 44m
FLIGHT DISTANCE
400 miles (644 km)
1h 32m - 1h 37m
08:30
21:35
400 miles (644 km)
June
1 (Show)
115
Delta Air Lines Terminal Information & Contact
Departure Terminal - SeaTac (SEA)
Terminal: 1
Phone: 1-800-123-6645
Location: 1, Seattle, US
Arrival Terminal - Boise (BOI)
Terminal: 1
Phone: 1-800-123-6645
Location: 1, Boise, US
Delta Air Lines Flight Schedule from SeaTac (SEA) to Boise (BOI)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
DL3712 |  Delta Air Lines | 08:30 | 11:02:00 | Embraer 175 (Enhanced Winglets) |
DL4127 | Delta Air Lines | 10:35 | 13:10:00 | Embraer 175 (Enhanced Winglets) |
DL3594 | Delta Air Lines | 13:30 | 16:05:00 | Embraer 175 (Enhanced Winglets) |
DL3688 | Delta Air Lines | 16:20 | 18:54:00 | Embraer 175 (Enhanced Winglets) |
DL3692 | Delta Air Lines | 17:50 | 20:24:00 | Embraer 175 (Enhanced Winglets) |
DL3817 | Delta Air Lines | 19:45 | 22:22:00 | Embraer 175 (Enhanced Winglets) |
DL3603 | Delta Air Lines | 21:35 | 00:07:00 | Embraer 175 (Enhanced Winglets) |
Delta Air Lines Monthly Flight Calendar
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Things to Do Near BOI Airport
Residence Inn Boise Downtown
5.3 km from airportIdaho Aquarium
5.6 km from airportBond Hotel & Extended Stay
6.5 km from airportFrank Steunenberg Statue
7.0 km from airportMarianne Williams Park Picnic Area
8.1 km from airportDelta Air Lines Terminal Information
Departure Terminal at SeaTac (SEA):
• Terminal : Delta Air Lines operates from this terminal
Terminal 1:
• Delta Air Lines Terminal Phone: 1-800-123-6645
Arrival Terminal at Boise (BOI):
• Terminal : Delta Air Lines operates from this terminal
Terminal 1:
• Delta Air Lines Terminal Phone: 1-800-123-6645
Weather & Climate at Boise (BOI)
11.8°C
Avg Temperature32mm
Avg Rainfall10.8km/h
Avg Wind Speed54%
Avg HumidityBest Months to Visit
Challenging Months
12-Month Weather Overview
Wind Speed by Month
Humidity by Month
Best Time to Book Flights to Boise (BOI)
Best Booking Window
Book 2-3 months in advance for best prices
Booking Tip
Avoid booking during extreme weather months for better deals
Recommended Months
These months offer the best balance of weather, prices, and availability.
Monthly Booking Recommendations
Flight Price Trends for Boise (BOI)
Cheapest Months to Fly
Book flights during these months for the best deals and lowest prices.
Price Trend Analysis
Prices are typically lower during shoulder seasons
Monthly Price Trends
Best Months to Fly Delta Air Lines to Boise (BOI)
Best Months
Optimal conditions for travel with favorable weather, prices, and availability.
Shoulder Season
Transition periods with moderate conditions. Good balance of price and experience.
Seasonal Insight
Best travel months: 2025-06, 2025-07, 2025-08, 2025-09
Seasonal Travel Calendar
Delta Air Lines Contact Information and Customer Services
Delta Air Lines Address
1030 Delta Boulevard
Atlanta, Georgia 30354-1989, United States
Customer Service Phone
+1 800 221 12 12Official Website
delta.comFrequently Asked Questions
How many Delta Air Lines flights operate from Seattle (SEA) to Boise (BOI)?
Delta Air Lines operates 7 flights from Seattle (SEA) to Boise (BOI).
What city does Boise (BOI) airport serve?
Boise (BOI) airport serves Boise, US.
How long is the Delta Air Lines flight from Seattle (SEA) to Boise (BOI)?
The flight duration is approximately 1h 18m - 1h 44m.
What is the distance from Seattle (SEA) to Boise (BOI)?
The distance is 400 miles (644 km).
What aircraft does Delta Air Lines use on this route?
Delta Air Lines uses Embraer 175 (Enhanced Winglets) on this route.
Which other airlines operate on this route?
1 other airline operates on this route: Alaska Airlines.
What are the earliest and latest Delta Air Lines flight departure times?
The earliest Delta Air Lines flight departs at 08:30 and the latest departs at 21:35.
View all Delta Air Lines flights to Seattle (SEA) →
Popular Delta Air Lines routes from Seattle include multiple destinations.
Route data verified regularly by Triposia Travel Research Team.