Idaho Falls to Portland Flights on Allegiant from $46*
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Flights from Idaho Falls to Portland
*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.
Deals from Idaho Falls to Portland
From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| Idaho Falls (IDA) | Portland (PDX) | One-way / Economy | Departing: December 8 2025 | From $46 Seen: 15 hrs ago |
| Idaho Falls (IDA) | Portland (PDX) | One-way / Economy | Departing: December 12 2025 | From $56 Seen: 16 hrs ago |
| Idaho Falls (IDA) | Portland (PDX) | One-way / Economy | Departing: December 5 2025 | From $60 Seen: 15 hrs ago |
| Idaho Falls (IDA) | Portland (PDX) | One-way / Economy | Departing: January 2 2026 | From $64 Seen: 1 day ago |
| Idaho Falls (IDA) | Portland (PDX) | One-way / Economy | Departing: November 26 2025 | From $83 Seen: 7 hrs ago |
| Idaho Falls (IDA) | Portland (PDX) | One-way / Economy | Departing: November 24 2025 | From $102 Seen: 47 minutes ago |
*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.
Flight Details
Departing From:
Idaho Falls Regional Airport (IDA)
Arriving To:
Portland International Airport (PDX)
Average Flight Time:
01 hour 53 minutes
Travel Tips
Bundles are packages of popular services with an added discount.
Select a bundle to:
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Save time
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Save money!
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Benefits include free checked bag, carry on, etc. Click here to learn more.
Lock in the lowest price by adding your checked and carryon bags when you book your flight.
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By charging for carry-ons, we ensure there is space for everyone who needs it.
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About Portland
Portland International Airport is located in Portland, OR. Explore and get to know Portland by booking a car along with your flight. Allegiant offers exclusive discounts with Alamo, Enterprise and National when you rent a car with your flight to Portland.
Frequently Asked Questions
Yes, Allegiant provides in-flight service on every flight. For more details on the variety of snacks and drinks available on board flights for purchase, check out our In Flight Refreshments & Services page.
Yes, all Allegiant Air flights from Idaho Falls to Portland are nonstop.
The day with the lowest fare can differ week to week. To find out what upcoming days have the lowest price to from fly Idaho Falls to Portland, please check out our flight search tool, which makes finding our lowest fare a breeze.
You can make changes to your reservation from Idaho Falls to Portland a breeze by clicking Manage Trips on our homepage. Fees and fare difference may apply.
Click Flight Status on our homepage to view the status of your upcoming flight from Idaho Falls to Portland.
Yes you can book a rental car. Yes, rental car facilities are available in Portland. Allegiant offers exclusive discounts with Alamo, Enterprise and National when you book a car together with your flight from Idaho Falls to Portland. Allegiant’s travel bundle makes flying a breeze.
