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Idaho Falls

$494+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — IDA
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap 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 September 14, 2025.

Round-trip from

$494
(Delta)
From Portland to Idaho Falls Fanning Field
Search Deals

Find flight deals from Portland to Idaho Falls

Cheapest flights from Portland to Idaho Falls
Explore the most affordable flight options available from Portland to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2812:45 pmPWM - IDA
2 stops11h 30mDelta
Sat 11/11:15 pmIDA - PWM
2 stops33h 50mDelta
Deal found 9/12$494
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Tue 10/284:51 pmPWM - IDA
2 stops18h 57mUnited Airlines
Sat 11/17:00 amIDA - PWM
1 stop6h 48mUnited Airlines
Deal found 9/13$527
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Mon 9/223:35 pmPWM - IDA
1 stop9h 13mUnited Airlines
Tue 9/235:00 amIDA - PWM
2 stops11h 26mUnited Airlines
Deal found 9/12$605
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Mon 9/222:14 pmPWM - IDA
2 stops10h 34mUnited Airlines
Fri 9/265:56 pmIDA - PWM
1 stop19h 52mUnited Airlines
Deal found 9/12$698
This American Airlines deal was found by Cheapflights users on 9/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:01 amPWM - IDA
1 stop8h 23mAmerican Airlines
Tue 9/236:44 amIDA - PWM
1 stop9h 01mAmerican Airlines
Deal found 9/12$720

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 September 14, 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

Tue 10/28

12:45 pm-10:15 pm

2 stops11h 30m

Idaho Falls Fanning Field

Sat 11/1

1:15 pm-1:05 am

2 stops33h 50m

$494

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Tue 10/28

4:51 pm-9:48 am

2 stops18h 57m

Idaho Falls Fanning Field

Sat 11/1

7:00 am-3:48 pm

1 stop6h 48m

$527

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Sun 9/28

3:39 pm-10:49 pm

1 stop9h 10m

Idaho Falls Fanning Field

Thu 10/2

5:00 am-3:48 pm

1 stop8h 48m

$1,275

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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, October is the cheapest month in which you can book a flight from Portland, Maine to Idaho Falls (average of $380). Flying from Portland, Maine to Idaho Falls in December is currently the most expensive (average of $578). 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?

    Delta and United Airlines can get you from Portland, Maine to Idaho Falls in just under 11h 30m. Your travel time can differ by up to 7h 27m. There are 2066 mi between Portland, Maine and Idaho Falls. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, October is the cheapest month in which you can book a flight from Portland, Maine to Idaho Falls (average of $380). Flying from Portland, Maine to Idaho Falls in December is currently the most expensive (average of $578). 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?

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