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Idaho Falls

$62+ Cheap flights from Portland to Idaho Falls (PDX - 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Idaho Falls Fanning Field are usually found in June or February, booked 83 days in advance, depart on a Monday or Friday and return on a Monday

Cheap flight deals from Portland to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) 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 June 12, 2025.

Round-trip from

$62
(Booking.com)

Popular in

September

Cheapest in

June

Average price

$104

Good round-trip deal

$68 or less

Good one-way deal

$48 or less
From Portland to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 44% potential increase in price ($191 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Portland to Idaho Falls Fanning Field.
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Price to beat on a one-way flight from Portland to Idaho Falls Fanning Field.
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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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/211:38 pmPDX - IDA
Nonstop1h 36mAllegiant Air
Mon 7/285:04 pmIDA - PDX
Nonstop1h 37mAllegiant Air
Deal found 6/12$103
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/211:38 pmPDX - IDA
Nonstop1h 36mMultiple Airlines
Mon 7/286:12 pmIDA - PDX
1 stop16h 06mMultiple Airlines
Deal found 6/10$167
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/174:28 pmPDX - IDA
1 stop5h 10mAlaska Airlines
Mon 10/204:15 pmIDA - PDX
2 stops18h 34mAlaska Airlines
Deal found 6/10$321
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/174:28 pmPDX - IDA
1 stop5h 10mHawaiian Airlines
Mon 10/206:13 amIDA - PDX
1 stop5h 40mHawaiian Airlines
Deal found 6/10$324
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 8/131:36 pmPDX - IDA
2 stops7h 51mDelta
Wed 8/206:00 amIDA - PDX
2 stops7h 55mDelta
Deal found 6/10$364
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/215:00 amPDX - IDA
1 stop11h 22mUnited Airlines
Fri 7/256:03 pmIDA - PDX
1 stop14h 39mUnited Airlines
Deal found 6/12$575

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 June 12, 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

PDX - IDA

PDXIDA

Portland

Mon 7/21

1:38 pm-4:14 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 7/28

5:04 pm-5:41 pm

Nonstop1h 37m

$103

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 7/21

1:38 pm-4:14 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 7/28

6:12 pm-9:18 am

1 stop16h 06m

$167

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 8/13

1:25 pm-10:39 pm

1 stop8h 14m

Idaho Falls Fanning Field

Wed 8/20

6:13 am-8:58 am

1 stop3h 45m

$361

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 8/13

1:36 pm-10:27 pm

2 stops7h 51m

Idaho Falls Fanning Field

Wed 8/20

6:00 am-12:55 pm

2 stops7h 55m

$364

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 8/13

3:40 pm-10:39 pm

1 stop5h 59m

Idaho Falls Fanning Field

Wed 8/20

6:13 am-10:57 am

1 stop5h 44m

$369

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 7/21

5:00 am-5:22 pm

1 stop11h 22m

Idaho Falls Fanning Field

Fri 7/25

6:03 pm-7:42 am

1 stop14h 39m

$575

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 6/20

1:04 pm-3:40 pm

Nonstop1h 36m

$73

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/7

10:23 am-11:44 am

1 stop24h 21m

$110

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 8/20

3:40 pm-10:39 pm

1 stop5h 59m

$149

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sat 7/26

5:35 pm-10:39 pm

1 stop4h 04m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 12 results
1
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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

How far ahead should I book a flight from Portland to Idaho Falls?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Idaho Falls. Price data was last updated on June 9, 2025.

Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Idaho Falls. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Portland to Idaho Falls (average of $380). Flying from Portland 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.

What is the cheapest time of day to fly from PDX to IDA?

Find hourly flight availability from Portland to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

It’s typically best to fly out from Portland to Idaho Falls at noon. Doing so could potentially save you 79% on the flight price compared to flying in the evening, which is usually more expensive.

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho Falls. Reviews last updated June 12, 2025.
To help decide which airline to fly from Portland to Idaho Falls, see what other customers have to say about Alaska Airlines, Delta and Hawaiian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 popular is this Portland to Idaho Falls flight route?

    Within the past month, 1 users have taken a look at flights from Portland to Idaho Falls Fanning Field.

  • What are the cheapest airlines flying from Portland to Idaho Falls round-trip?

    Our cheapest airline available from Portland to Idaho Falls is Allegiant Air. Our recent data shows that you can find tickets from as low as $62 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at $361 and $364 round-trip. These flights start at 74% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Portland to Idaho Falls one-way?

    One-way options have recently been found by users for as low as $73 on Allegiant Air. Other airlines that offer cheap prices include Alaska Airlines from $149 and Hawaiian Airlines from $187 one-way.

  • What are the cheapest flights from Portland to Idaho Falls?

    While on average a flight from Portland to Idaho Falls is generally $70, our data shows the cheapest flight currently is $44. When looking at the most popular route, (Portland - Idaho Falls Fanning Field), you can expect to pay $62 for that flight.

  • 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 to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Portland to Idaho Falls (average of $380). Flying from Portland 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 Portland?

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Top 3 airlines flying from Portland to Idaho Falls

Discover the top 3 airlines that operate flights from Portland to Idaho Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$68Average$108FlexibilityNo cancel feeOn-time88%
DeltaCheapest$171Average$418FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$290Average$441FlexibilityNo cancel feeOn-time75%

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