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Idaho Falls

$63+ 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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
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 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$239
(KAYAK)

One-way from

$63
(Kiwi.com)

Popular in

September

Cheapest in

June

Average price

$575
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
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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. 43% potential increase in price ($191 potential increase over avg. RT price).
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Cheapest flight prices on average. 13% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 25, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Fri 12/512:01 pmPDX - IDA
Nonstop1h 35mAllegiant Air
Fri 12/123:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Deal found 9/23$122
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Fri 12/512:01 pmPDX - IDA
Nonstop1h 35mAllegiant Air
Mon 12/153:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Deal found 9/23$130
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Fri 12/512:01 pmPDX - IDA
Nonstop1h 35mMultiple Airlines
Sun 12/144:39 pmIDA - PDX
1 stop26h 54mMultiple Airlines
Deal found 9/23$172
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 12/411:45 amPDX - IDA
1 stop26h 51mMultiple Airlines
Fri 12/123:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Deal found 9/23$217
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Fri 12/512:01 pmPDX - IDA
Nonstop1h 35mMultiple Airlines
Sat 12/1312:49 pmIDA - PDX
2 stops25h 31mMultiple Airlines
Deal found 9/23$228
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 12/411:45 amPDX - IDA
1 stop26h 51mMultiple Airlines
Mon 12/153:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Deal found 9/23$230
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Wed 12/35:49 pmPDX - IDA
1 stop5h 13mMultiple Airlines
Fri 12/123:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Deal found 9/23$234
This KAYAK deal was found by Cheapflights users on 9/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/183:30 pmPDX - IDA
1 stop6h 08mAlaska Airlines
Tue 10/216:00 amIDA - PDX
1 stop4h 00mAlaska Airlines
Deal found 9/24$239
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Fri 12/55:49 pmPDX - IDA
1 stop5h 13mMultiple Airlines
Fri 12/123:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Deal found 9/23$245

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 25, 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

Sat 10/18

3:30 pm-10:38 pm

1 stop6h 08m

Idaho Falls Fanning Field

Tue 10/21

6:00 am-9:00 am

1 stop4h 00m

$239

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sat 10/18

7:20 am-10:38 pm

1 stop14h 18m

Idaho Falls Fanning Field

Wed 10/22

6:00 am-12:25 pm

1 stop7h 25m

$257

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 10/15

1:25 pm-10:38 pm

1 stop8h 13m

Idaho Falls Fanning Field

Sun 10/19

6:00 am-9:00 am

1 stop4h 00m

$290

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 10/24

10:00 pm-3:38 pm

1 stop16h 38m

Idaho Falls Fanning Field

Fri 10/31

6:05 am-6:17 am

1 stop25h 12m

$290

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 10/17

3:30 pm-3:38 pm

1 stop23h 08m

Idaho Falls Fanning Field

Mon 10/20

4:15 pm-1:25 pm

2 stops22h 10m

$326

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 10/20

3:30 pm-10:38 pm

1 stop6h 08m

Idaho Falls Fanning Field

Wed 10/22

4:15 pm-9:41 am

2 stops18h 26m

$350

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 10/16

10:00 pm-10:38 pm

1 stop23h 38m

Idaho Falls Fanning Field

Sun 10/19

6:00 am-9:00 am

1 stop4h 00m

$352

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 1/15

9:10 am-6:15 pm

2 stops8h 05m

Idaho Falls Fanning Field

Sun 1/18

6:00 am-1:14 pm

2 stops8h 14m

$354

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 10/21

4:25 pm-10:38 pm

1 stop5h 13m

$163

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 10/16

2:18 pm-4:14 pm

2 stops24h 56m

$163

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 16 results
1
2

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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 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-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Idaho Falls flights, Cheapflights users trust FlightHub the most. FlightHub 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-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 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 25, 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 25, 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

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,751 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Allegiant Air
7.2
Good
699 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 6h 08m. 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.

  • 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 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$104FlexibilityNo cancel feeOn-time88%
DeltaCheapest$171Average$409FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$184Average$364FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$256Average$409FlexibilityNo cancel feeOn-time75%

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