Direct (nonstop) flights from Seattle to Idaho Falls
1 airline flys nonstop from Seattle Tacoma International (SEA) to Idaho Falls Rgnl (IDA). It's 565 miles (910 km), about 1h 46m in the air. Operated by Alaska Airlines.
Alaska Airlines
Route data last updated: May 26, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Seattle to Idaho Falls with one stop · direct emits 105 kg CO₂ per passenger
Looking for the return flight?
IDA → SEA: Flights from Idaho Falls to SeattleOther direct flights from Seattle
Direct flights from Idaho Falls (IDA)
Frequently Asked Questions
How long is the direct flight from Seattle to Idaho Falls?
A nonstop flight from Seattle (SEA) to Idaho Falls (IDA) takes approximately 1 hours and 46 minutes. The distance is 565 miles (910 km).
Which airlines fly nonstop from Seattle to Idaho Falls?
Just Alaska Airlines.
Is there a nonstop flight from Seattle to Idaho Falls?
Yes. 1 airline: Alaska Airlines.
How far is Seattle from Idaho Falls?
The flight distance from Seattle to Idaho Falls is 565 miles (910 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Seattle to Idaho Falls?
At 1h 46m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Seattle to Idaho Falls?
Roughly 105 kg CO2 per passenger one-way. That's about the same as driving 525 km.
Is the return flight from Idaho Falls to Seattle also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Seattle to Idaho Falls?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Seattle Tacoma International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.