Direct (nonstop) flights from Idaho Falls to Seattle
1 airline flys nonstop from Idaho Falls Rgnl (IDA) to Seattle Tacoma International (SEA). It's 565 miles (910 km), about 1h 57m in the air. Operated by Alaska Airlines.
Alaska Airlines
Route data last updated: May 28, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Idaho Falls to Seattle with one stop · direct emits 105 kg CO₂ per passenger
Looking for the return flight?
SEA → IDA: Flights from Seattle to Idaho FallsOther direct flights from Idaho Falls
Direct flights from Seattle (SEA)
Frequently Asked Questions
How long is the direct flight from Idaho Falls to Seattle?
A nonstop flight from Idaho Falls (IDA) to Seattle (SEA) takes approximately 1 hours and 57 minutes. The distance is 565 miles (910 km).
Which airlines fly nonstop from Idaho Falls to Seattle?
Just Alaska Airlines.
Is there a nonstop flight from Idaho Falls to Seattle?
Yes. 1 airline: Alaska Airlines.
How far is Idaho Falls from Seattle?
The flight distance from Idaho Falls to Seattle is 565 miles (910 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Idaho Falls to Seattle?
At 1h 57m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Idaho Falls to Seattle?
Roughly 105 kg CO2 per passenger one-way. That's about the same as driving 525 km.
Is the return flight from Seattle to Idaho Falls 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 Idaho Falls to Seattle?
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 Idaho Falls Rgnl for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.