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Idaho Falls

$74+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Cheap 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 July 30, 2026.

This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:30 am
PDX
-
IDA
Nonstop1h 54m
Alaska Airlines
Sat 9/193:57 pm
IDA
-
PDX
Nonstop1h 53m
Alaska Airlines
Deal found 7/29$197
This Delta deal was found by Cheapflights users on 7/28. 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.
Thu 8/275:08 pm
PDX
-
IDA
1 stop4h 24m
Delta
Sun 8/306:00 am
IDA
-
PDX
1 stop3h 37m
Delta
Deal found 7/28$207
This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 8/103:55 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Deal found 7/28$212
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/1012:25 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 8/143:55 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Deal found 7/28$221
This Orbitz deal was found by Cheapflights users on 7/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:30 am
PDX
-
IDA
Nonstop1h 51m
Alaska Airlines
Mon 10/193:57 pm
IDA
-
PDX
Nonstop1h 52m
Alaska Airlines
Deal found 7/28$236
This Priceline deal was found by Cheapflights users on 7/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:30 am
PDX
-
IDA
Nonstop1h 54m
Alaska Airlines
Tue 9/13:57 pm
IDA
-
PDX
Nonstop1h 53m
Alaska Airlines
Deal found 7/26$237
This Super.com deal was found by Cheapflights users on 7/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3112:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 8/33:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Deal found 7/27$245
This Priceline deal was found by Cheapflights users on 7/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:30 am
PDX
-
IDA
Nonstop1h 54m
Alaska Airlines
Sat 9/123:57 pm
IDA
-
PDX
Nonstop1h 53m
Alaska Airlines
Deal found 7/25$247
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:30 am
PDX
-
IDA
Nonstop1h 51m
Alaska Airlines
Sun 10/183:57 pm
IDA
-
PDX
Nonstop1h 52m
Alaska Airlines
Deal found 7/29$257
This Delta deal was found by Cheapflights users on 7/29. 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.
Sat 9/125:10 pm
PDX
-
IDA
1 stop4h 12m
Delta
Sat 9/196:00 am
IDA
-
PDX
1 stop3h 41m
Delta
Deal found 7/29$258
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 10/297:00 am
PDX
-
IDA
2 stops10h 16m
Delta
Sat 10/311:05 pm
IDA
-
PDX
1 stop4h 05m
Delta
Deal found 7/29$263

Find 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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$197
(Booking.com)

One-way from

$74
(Super.com)

Popular in

January

Cheapest in

July

Average price

$107

Good round-trip deal

$237 or less

Good one-way deal

$93 or less
Provider with most accurate pricing for Portland-Idaho Falls Fanning Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Idaho Falls Fanning Field flights.
Search Deals
From Portland to Idaho Falls Fanning Field
Search Deals
One-way flight from Portland to Idaho Falls Fanning Field
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Portland to Idaho Falls Fanning Field.
Search Deals
Price to beat on a one-way flight from Portland to Idaho Falls Fanning Field.
Search Deals

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 July 30, 2026.
Use the filters below to find and compare flights from Portland to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 9/24

5:10 pm-10:22 pm

1 stop4h 12m

Idaho Falls Fanning Field

Tue 9/29

6:57 pm-11:40 pm

1 stop5h 43m

$207

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/20

5:45 am-10:50 am

1 stop4h 05m

Idaho Falls Fanning Field

Tue 8/25

6:00 am-8:37 am

1 stop3h 37m

$312

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/20

5:45 am-10:50 am

1 stop4h 05m

Idaho Falls Fanning Field

Thu 8/27

7:00 pm-11:39 pm

1 stop5h 39m

$322

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 9/24

10:30 am-1:24 pm

Nonstop1h 54m

Idaho Falls Fanning Field

Tue 9/29

3:57 pm-4:50 pm

Nonstop1h 53m

$357
Quickest round-trip

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 8/14

10:30 am-1:06 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 8/17

4:14 pm-4:50 pm

Nonstop1h 36m

$372

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/20

10:30 am-1:24 pm

Nonstop1h 54m

Idaho Falls Fanning Field

Thu 8/27

3:57 pm-4:50 pm

Nonstop1h 53m

$402

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 8/18

9:45 am-2:35 pm

1 stop3h 50m

Idaho Falls Fanning Field

Thu 8/20

7:00 pm-11:39 pm

1 stop5h 39m

$417

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/20

5:45 am-10:50 am

1 stop4h 05m

Idaho Falls Fanning Field

Wed 8/26

11:35 am-7:44 pm

2 stops9h 09m

$440
Cheapest one-way

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/27

5:08 pm-10:32 pm

1 stop4h 24m

$134

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 10/23

1:10 pm-6:16 pm

1 stop4h 06m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 16 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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, July is the cheapest month in which you can book a flight from Portland to Idaho Falls (average of $107). Flying from Portland to Idaho Falls in January is currently the most expensive (average of $496). 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 July 30, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Idaho Falls as you normally would.

How much does it cost to fly round-trip from Portland to Idaho Falls?

Airfare is below average for this route at the moment.

Portland to Idaho Falls flights typically cost between $250 and $387 in September.
The cheapest round-trip price found within the last 5 days was $197 on Alaska Airlines (Sep 12-Sep 19).

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 July 30, 2026.
Read through reviews of airlines operating flights from Portland to Idaho Falls, such as Alaska Airlines,Delta, andAllegiant Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,729 reviews

Comfort

7.8

Food

7.0

Entertainment

7.0

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Alaska Airlines
7.9
Good
12,729 reviews
Alaska Airlines
7.9
Good
12,729 reviews

Comfort

7.8

Food

7.0

Entertainment

7.0

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Delta
7.8
Good
8,486 reviews
Alaska Airlines
7.9
Good
12,729 reviews

Comfort

7.8

Food

7.0

Entertainment

7.0

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Allegiant Air
7.3
Good
680 reviews
Alaska Airlines
7.9
Good
12,729 reviews

Comfort

7.8

Food

7.0

Entertainment

7.0

Overall

7.9

Crew

8.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

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.

  • What airports do I use to fly from Portland to Idaho Falls?

    If you wish to fly to Idaho Falls from Portland, then you need to book flights from Portland to Idaho Falls Fanning Field. There is 1 flight from Portland (PDX) to Fanning Field (IDA) per day to choose from. Flights to Idaho Falls from Portland are available from 3 different airlines, which means you should have some options if you want to compare airfare deals. 1h 36m is how long a nonstop flight from Portland to Idaho Falls Fanning Field typically takes.

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

    Departing from Portland to Idaho Falls will take you 4h 12m. 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 $68 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at $168 and $193 round-trip. These flights start at 79% 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 $49 on Allegiant Air. Other airlines that offer cheap prices include Alaska Airlines from $154 and Delta from $158 one-way.

  • What are the most reliable airlines from Portland to Idaho Falls?

    Before booking your flight to Idaho Falls from Portland, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (78%), Alaska Airlines (78%), Allegiant Air( 74%).

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

    While on average a flight from Portland to Idaho Falls is generally $232, our data shows the cheapest flight currently is $80. When looking at the most popular route, (Portland - Idaho Falls Fanning Field), you can expect to pay $207 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, July is the cheapest month in which you can book a flight from Portland to Idaho Falls (average of $107). Flying from Portland to Idaho Falls in January is currently the most expensive (average of $496). 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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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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$68Average$114FlexibilityNo cancel feeOn-time88%
DeltaCheapest$168Average$426FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$193Average$426FlexibilityNo cancel feeOn-time75%

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