Cheap flights from Portland, Maine to Idaho Falls from $434
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Idaho Falls departing on 9/15. 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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American Airlines flights from Portland, Maine to Idaho Falls
Our best American Airlines deals on Portland, Maine to Idaho Falls flight tickets
United Airlines flights from Portland, Maine to Idaho Falls
Our best United Airlines deals on Portland, Maine to Idaho Falls flight tickets
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How to get the cheapest flight ticket from Portland, Maine 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 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 $654. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Friday is $955.
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 in the morning. Flights from Portland, Maine to Idaho Falls during this time can be as low as $654. Try not to purchase tickets in the afternoon because they tend to be around $948. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest airline that flies from Portland to Idaho Falls Fanning Field?
United Airlines is the most popular carrier operating from Portland to Idaho Falls Fanning Field
What airlines fly to Idaho Falls?
United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Idaho Falls from Portland, Maine according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland, Maine to Idaho Falls
Cheap Portland, Maine to Idaho Falls (PWM to IDA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Idaho Falls
How far is Portland to Idaho Falls Fanning Field by plane?
The distance between Portland and Idaho Falls Fanning Field is about 2067.7 mi. A reasonable flight in good conditions will take 8h 09m.
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 July 2025, there is 1 operator 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 for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for 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 required for your trip to Idaho Falls Fanning Field Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho Falls Fanning Field Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland, Maine to Idaho Falls?
momondo data reveals that the most frequently booked airline on the route from Portland, Maine to Idaho Falls is United Airlines, representing 100% of all bookings.
Best airlines flying from Portland, Maine to Idaho Falls
Compare and see reviews for airlines that fly from Portland, Maine to Idaho Falls with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $392 | Free Cancellation | Rating 7.4 8,861 reviews |
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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.