Direct (nonstop) flights from Portland to Idaho Falls
2 airlines fly nonstop from Portland International (PDX) to Idaho Falls Rgnl (IDA). It's 538 miles (866 km), about 1h 40m in the air. Operated by Alaska Airlines, Allegiant Air.
Alaska Airlines
Allegiant Air
Route data last updated: May 31, 2026
Airlines with non-stop flights
AS
Alaska Airlines
Alternative Routes
Other ways to fly from Portland to Idaho Falls with one stop · direct emits 100 kg CO₂ per passenger
Looking for the return flight?
IDA → PDX: Flights from Idaho Falls to PortlandOther direct flights from Portland
Direct flights from Idaho Falls (IDA)
Frequently Asked Questions
How long is the direct flight from Portland to Idaho Falls?
A nonstop flight from Portland (PDX) to Idaho Falls (IDA) takes approximately 1 hours and 40 minutes. The distance is 538 miles (866 km).
Which airlines fly nonstop from Portland to Idaho Falls?
2 airlines: Alaska Airlines, Allegiant Air.
Is there a nonstop flight from Portland to Idaho Falls?
Yes. 2 airlines: Alaska Airlines, Allegiant Air.
How far is Portland from Idaho Falls?
The flight distance from Portland to Idaho Falls is 538 miles (866 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Portland to Idaho Falls?
At 1h 40m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Portland to Idaho Falls?
Roughly 100 kg CO2 per passenger one-way. That's about the same as driving 500 km.
Is the return flight from Idaho Falls to Portland 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 Portland 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 Portland International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.