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Idaho Falls

$157+ Cheap flights from Portland to Idaho Falls (PDX - IDA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 (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 September 11, 2025.

Round-trip from

$310
(Kiwi.com)

One-way from

$157
(Kiwi.com)

Popular in

August

Cheapest in

June

Average price

$472

Good one-way deal

$215 or less
From Portland to Idaho Falls Fanning Field
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One-way flight from Portland to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 31% potential increase in price ($116 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:22 pmPDX - IDA
1 stop19h 43mMultiple Airlines
Mon 9/299:39 pmIDA - PDX
1 stop14h 32mMultiple Airlines
Deal found 9/10$310
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 10/1710:00 pmPDX - IDA
1 stop23h 38mAlaska Airlines
Mon 10/204:15 pmIDA - PDX
1 stop17h 45mAlaska Airlines
Deal found 9/9$362
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/216:00 pmPDX - IDA
1 stop20h 38mAlaska Airlines
Fri 10/244:15 pmIDA - PDX
1 stop22h 28mAlaska Airlines
Deal found 9/9$363
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 10/224:25 pmPDX - IDA
1 stop5h 13mAlaska Airlines
Thu 10/236:00 amIDA - PDX
1 stop5h 53mAlaska Airlines
Deal found 9/9$386
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/81:25 pmPDX - IDA
1 stop8h 13mAlaska Airlines
Tue 10/146:00 amIDA - PDX
1 stop25h 20mAlaska Airlines
Deal found 9/11$393
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 10/92:18 pmPDX - IDA
2 stops24h 56mMultiple Airlines
Thu 10/1610:13 pmIDA - PDX
1 stop12h 26mMultiple Airlines
Deal found 9/11$417
This Alaska Airlines deal was found by Cheapflights users on 9/8. 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.
Wed 12/241:51 pmPDX - IDA
1 stop9h 15mAlaska Airlines
Thu 1/12:43 pmIDA - PDX
1 stop5h 03mAlaska Airlines
Deal found 9/8$423

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 11, 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

Thu 9/25

7:22 pm-4:05 pm

1 stop19h 43m

Idaho Falls Fanning Field

Mon 9/29

9:39 pm-11:11 am

1 stop14h 32m

$310

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 10/21

6:00 pm-3:38 pm

1 stop20h 38m

Idaho Falls Fanning Field

Fri 10/24

4:15 pm-1:43 pm

1 stop22h 28m

$363

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 10/17

1:25 pm-3:38 pm

1 stop25h 13m

Idaho Falls Fanning Field

Mon 10/20

6:00 am-6:20 am

1 stop25h 20m

$382

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 10/22

4:25 pm-10:38 pm

1 stop5h 13m

Idaho Falls Fanning Field

Thu 10/23

6:00 am-10:53 am

1 stop5h 53m

$386

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 10/8

1:25 pm-10:38 pm

1 stop8h 13m

Idaho Falls Fanning Field

Tue 10/14

6:00 am-6:20 am

1 stop25h 20m

$393

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 9/30

5:00 am-8:52 pm

1 stop14h 52m

Idaho Falls Fanning Field

Fri 10/3

5:56 pm-9:30 am

1 stop16h 34m

$446

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 10/9

3:30 pm-10:38 pm

1 stop6h 08m

Idaho Falls Fanning Field

Sun 10/12

6:00 am-9:00 am

1 stop4h 00m

$446

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 10/6

2:30 pm-10:38 pm

1 stop7h 08m

Idaho Falls Fanning Field

Mon 10/13

6:00 am-9:00 am

1 stop4h 00m

$448

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 10/9

10:00 pm-10:38 pm

1 stop23h 38m

Idaho Falls Fanning Field

Sun 10/12

6:00 am-9:00 am

1 stop4h 00m

$453

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sun 11/2

7:57 pm-2:01 pm

1 stop17h 04m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 14 results
1
2

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 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 September 11, 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.

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 September 11, 2025.
Read through reviews of airlines operating flights from Portland to Idaho Falls, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Allegiant Air
7.2
Good
702 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 to Idaho Falls?

    Departing from Portland to Idaho Falls will take you 20h 38m. Portland and Idaho Falls are separated by a distance of 537 mi.

  • 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 $56 on this airline. Additional options worth looking into are Delta and Hawaiian Airlines, starting at $171 and $184 round-trip. These flights start at 77% lower than the current average price 3 months from now.

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

    While on average a flight from Portland to Idaho Falls is generally $218, our data shows the cheapest flight currently is $54. When looking at the most popular route, (Portland - Idaho Falls Fanning Field), you can expect to pay $174 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 Idaho Falls?

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

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Top 4 airlines flying from Portland to Idaho Falls

Discover the top 4 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$103FlexibilityNo cancel feeOn-time88%
DeltaCheapest$171Average$392FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$184Average$364FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$256Average$403FlexibilityNo cancel feeOn-time75%

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