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Idaho Falls

$518+ Cheap flights from Portland, ME to Idaho Falls (PWM - IDA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — IDA
ene. 14 — ene. 211
mié. 1/14
mié. 1/21
1 adult, Economy
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Cheap flight deals from Portland to Idaho Falls

Best flights from Portland to Idaho Falls
Discover carefully curated flight deals from Portland to Idaho Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 1/246:00 amPWM - IDA
2 stops11h 31mUnited Airlines
mié. 1/284:19 pmIDA - PWM
2 stops14h 42mUnited Airlines
Deal found 12/12$518

Find flight deals from Portland to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$518
(United Airlines)

Popular in

July

Cheapest in

October

Average price

$550
Provider with most accurate pricing for Portland-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for Portland-Idaho Falls Fanning Field flights.
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From Portland to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 15, 2025.
Use the filters below to find and compare flights from Portland to Idaho Falls that are best for you.

Fly from

Portland

Fly to

Idaho Falls

Route

Depart

Return

Price

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

sáb. 1/24

6:00 am-3:31 pm

2 stops11h 31m

Idaho Falls Fanning Field

mié. 1/28

4:19 pm-9:01 am

2 stops14h 42m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Compare providers for flights from Portland to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Idaho Falls in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Idaho Falls flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Idaho Falls flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland, Maine-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Idaho Falls flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Idaho Falls

What is the cheapest month to book a flight from Portland, Maine to Idaho Falls?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Idaho Falls (average of $296). Flying from Portland, Maine to Idaho Falls in July is currently the most expensive (average of $442). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Portland to Idaho Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland, Maine to Idaho Falls?

    United Airlines can get you from Portland, Maine to Idaho Falls in just under 11h 31m. Your travel time can differ by up to . There are 2066 mi between Portland, Maine and Idaho Falls.

  • Can I find deals for flights from Portland to Idaho Falls that include hotel bookings?

    Yes. In addition to deals on Portland to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Idaho Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Idaho Falls.

  • Can I find deals for business class flights from Portland to Idaho Falls?

    Yes. Cheapflights offers flight deals from Portland to Idaho Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to Idaho Falls?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Idaho Falls (average of $296). Flying from Portland, Maine to Idaho Falls in July is currently the most expensive (average of $442). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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