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Idaho Falls

$198+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
fev 27 — mar 61
sex 2/27
sex 3/6
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 janeiro 28, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 3/103:52 pm
PDX
-
IDA
1 stop6h 44m
Alaska Airlines
qua 3/115:20 pm
IDA
-
PDX
1 stop6h 21m
Alaska Airlines
Deal found 1/26$198
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 2/245:00 pm
PDX
-
IDA
1 stop4h 21m
Delta
ter 3/36:35 pm
IDA
-
PDX
1 stop6h 18m
Delta
Deal found 1/26$223
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/91:36 pm
PDX
-
IDA
1 stop9h 00m
Alaska Airlines
qui 3/128:00 am
IDA
-
PDX
1 stop3h 46m
Alaska Airlines
Deal found 1/26$229
This SmartFares deal was found by Cheapflights users on 1/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 3/53:52 pm
PDX
-
IDA
1 stop6h 44m
Alaska Airlines
seg 3/95:20 pm
IDA
-
PDX
1 stop6h 21m
Alaska Airlines
Deal found 1/27$247
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 2/268:30 am
PDX
-
IDA
1 stop7h 13m
Alaska Airlines
sáb 2/288:00 am
IDA
-
PDX
1 stop3h 46m
Alaska Airlines
Deal found 1/25$264
This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 3/48:30 am
PDX
-
IDA
1 stop7h 13m
Alaska Airlines
qua 3/115:20 pm
IDA
-
PDX
1 stop6h 21m
Alaska Airlines
Deal found 1/27$277
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/85:35 pm
PDX
-
IDA
1 stop4h 04m
Alaska Airlines
qua 10/144:00 pm
IDA
-
PDX
Nonstop1h 41m
Alaska Airlines
Deal found 1/28$287

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 janeiro 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$198
(Alaska Airlines)

Popular in

January

Cheapest in

June

Average price

$496

Good round-trip deal

$131 or less

Good one-way deal

$60 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
Highest demand for flights based on searches. 6% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 janeiro 28, 2026.
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

ter 3/10

3:52 pm-11:36 pm

1 stop6h 44m

Idaho Falls Fanning Field

qua 3/11

5:20 pm-10:41 pm

1 stop6h 21m

$198

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

qui 3/5

3:52 pm-11:36 pm

1 stop6h 44m

Idaho Falls Fanning Field

seg 3/9

5:20 pm-10:41 pm

1 stop6h 21m

$247

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

qui 2/26

8:30 am-4:43 pm

1 stop7h 13m

Idaho Falls Fanning Field

sáb 2/28

8:00 am-10:46 am

1 stop3h 46m

$264

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

qua 3/18

7:30 am-10:52 pm

2 stops14h 22m

Idaho Falls Fanning Field

sáb 3/21

5:59 pm-9:38 pm

1 stop4h 39m

$310

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

ter 2/10

5:08 pm-10:57 pm

1 stop4h 49m

Idaho Falls Fanning Field

ter 2/17

5:25 am-9:15 am

1 stop4h 50m

$337

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

seg 6/15

10:46 am-1:22 pm

Nonstop1h 36m

$219

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

dom 6/14

5:36 pm-11:59 pm

1 stop5h 23m

$234

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

sex 2/6

2:38 pm-10:59 pm

1 stop7h 21m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

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 January.
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 $44). Flying from Portland to Idaho Falls in October is currently the most expensive (average of $358). 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.

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 janeiro 28, 2026.
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
11,799 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,799 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,120 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Hawaiian Airlines
7.8
Good
2,829 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Allegiant Air
7.2
Good
706 reviews
Alaska Airlines
8.0
Very good
11,799 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 44m. 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 $44 on this airline. Additional options worth looking into are Delta and Hawaiian Airlines, starting at $162 and $178 round-trip. These flights start at 82% 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 $48 on Allegiant Air. Other airlines that offer cheap prices include Alaska Airlines from $113 and Delta from $184 one-way.

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

    While on average a flight from Portland to Idaho Falls is generally $124, our data shows the cheapest flight currently is $57. When looking at the most popular route, (Portland - Idaho Falls Fanning Field), you can expect to pay $247 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 $44). Flying from Portland to Idaho Falls in October is currently the most expensive (average of $358). 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 janeiro 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$44Average$97FlexibilityNo cancel feeOn-time88%
DeltaCheapest$162Average$386FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$178Average$359FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$193Average$409FlexibilityNo cancel feeOn-time75%

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