Cheap flights from Portland to Idaho Falls from $108
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Idaho Falls departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Allegiant Air flights from Portland to Idaho Falls
Our best Allegiant Air deals on Portland to Idaho Falls flight tickets
Delta flights from Portland to Idaho Falls
Our best Delta deals on Portland to Idaho Falls flight tickets
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How to get the cheapest flight ticket from Portland to Idaho Falls
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Idaho Falls?
If you aren’t able to travel to Idaho Falls during the month of June, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $126.
What is the cheapest day to depart on your flight to Idaho Falls?
Our data shows that Saturday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $44. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Sunday is $483.
What is the cheapest time of day to depart on your flight to Idaho Falls?
Our most recent data shows that the best time of day to fly to Idaho Falls is at noon. Flights from Portland to Idaho Falls during this time can be as low as $90. Try not to purchase tickets in the evening because they tend to be around $413. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Portland to Idaho Falls Fanning Field flight route?
Fly from Portland to Idaho Falls Fanning Field for the best Portland - Idaho Falls Fanning Field flight prices
What cabin class options are available on Portland to Idaho Falls Fanning Field flights?
There are 1 cabin classes available to choose from on Portland to Idaho Falls Fanning Field flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How have Portland to Idaho Falls flight prices changed over time?
As of April 2025, prices for Portland to Idaho Falls flights are approximately 65% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Portland to Idaho Falls Fanning Field?
Hawaiian Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Portland to Idaho Falls Fanning Field
What airlines fly to Idaho Falls?
Delta, Alaska Airlines and Allegiant Air are the top three most popular airlines that fly to Idaho Falls from Portland according to our data. Delta is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 4 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.
How many flights depart from Portland to Idaho Falls on average per week?
As of April 2025, there are 2 flights per week flying from Portland to Idaho Falls. The most common day of the week flights depart is Mon, with 50% of flights taking off on this day.
When to book flights from Portland to Idaho Falls
Cheap Portland to Idaho Falls (PDX to IDA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to Idaho Falls
Best Price Found | $161 |
|---|---|
Fastest flight time | 1h 36m |
Direct flights | Tue and Sat |
Airports in Idaho Falls | 1 airport |
How far is Portland to Idaho Falls Fanning Field by plane?
Idaho Falls Fanning Field is 542.6 mi away from Portland. Typically, this will take 1h 36m by plane in normal conditions.
When did momondo last update prices for flights from Portland Airport to Idaho Falls Fanning Field Airport?
Prices for flights from Portland Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Idaho Falls Fanning Field Airport?
As of April 2025, there are 3 operators available to choose from for flights from Portland Airport to Idaho Falls Fanning Field Airport.
How old do you have to be to fly from Portland Airport to Idaho Falls Fanning Field Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Idaho Falls Fanning Field Airport.
What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?
The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Portland to Idaho Falls?
momondo data reveals that the most frequently booked plane model on the route from Portland to Idaho Falls is Airbus A320-100/200, representing 100.00% of all bookings.
What is the most popular airline from Portland to Idaho Falls?
Based on momondo bookings for flights between Portland and Idaho Falls, the leading airline is Allegiant Air, making up 50% of the total bookings. Other popular airlines include Alaska Airlines with 36% and Delta with 14%.
Best airlines flying from Portland to Idaho Falls
Compare and see reviews for airlines that fly from Portland to Idaho Falls with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $85 | Free Cancellation | Rating 7.3 734 reviews | |||
| PriceFrom $198 | Free Cancellation | Rating 8.0 7,911 reviews | |||
| PriceFrom $293 | Free Cancellation | Rating 8.0 9,851 reviews |
Allegiant Air Flights From Portland to Idaho Falls
Allegiant Air flies from Portland to Idaho Falls around 2 times per week, with 734 momondo users rating the airline 7.3/10. The cheapest Allegiant Air deal from Portland to Idaho Falls in the last 72 hours was $85 (round-trip), much lower than the average airfare cost of $117 for Allegiant Air flights on this route.
Traveling to a place near Idaho Falls?
Book flights to Idaho Falls if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portland to Idaho Falls?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Idaho Falls from Portland.
Can I find flights from Portland to Idaho Falls with flexible booking policies on momondo?
All flight searches from Portland to Idaho Falls on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Portland to Idaho Falls?
momondo provides multiple filters to help you find the best flight to Idaho Falls from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Portland to Idaho Falls right now. Can momondo alert me if prices change?
Price alerts on flights to Idaho Falls from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.