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Idaho Falls

$49+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
Apr 14 — Apr 211
Tue 4/14
Tue 4/21
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 March 15, 2026.

This Gotogate deal was found by Cheapflights users on 3/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/83:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 6/196:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 3/12$106
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Mon 7/612:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 7/133:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Deal found 3/11$108
This deal was found by Cheapflights users on 3/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:05 pm
PDX
-
IDA
1 stop4h 37m
Delta
Sat 5/166:54 pm
IDA
-
PDX
1 stop4h 46m
Delta
Deal found 3/12$208
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 6/83:09 pm
PDX
-
IDA
Nonstop1h 40m
Multiple Airlines
Fri 6/1910:56 pm
IDA
-
PDX
1 stop23h 13m
Multiple Airlines
Deal found 3/12$238
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Mon 6/153:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Thu 6/189:45 am
IDA
-
PDX
1 stop9h 42m
Allegiant Air
Deal found 3/11$272
This deal was found by Cheapflights users on 3/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
PDX
-
IDA
1 stop3h 47m
Delta
Sat 5/166:54 pm
IDA
-
PDX
1 stop4h 46m
Delta
Deal found 3/12$277
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 5/98:45 am
PDX
-
IDA
1 stop12h 55m
Alaska Airlines
Tue 5/126:00 am
IDA
-
PDX
1 stop4h 31m
Alaska Airlines
Deal found 3/10$295
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Mon 7/612:20 pm
PDX
-
IDA
Nonstop1h 40m
Multiple Airlines
Mon 7/139:47 am
IDA
-
PDX
2 stops26h 26m
Multiple Airlines
Deal found 3/11$308
This Expedia deal was found by Cheapflights users on 3/14. 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.
Wed 9/911:50 am
PDX
-
IDA
Nonstop1h 37m
Alaska Airlines
Sun 9/134:00 pm
IDA
-
PDX
Nonstop1h 41m
Alaska Airlines
Deal found 3/14$317
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Fri 7/312:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Sun 7/59:45 am
IDA
-
PDX
1 stop9h 03m
Allegiant Air
Deal found 3/10$321

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 March 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$106
(Gotogate)

One-way from

$49
(Mytrip)

Popular in

January

Cheapest in

June

Average price

$397

Good round-trip deal

$88 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. 18% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip 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 March 15, 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

Sat 5/9

8:45 am-10:40 pm

1 stop12h 55m

Idaho Falls Fanning Field

Tue 5/12

6:00 am-9:31 am

1 stop4h 31m

$295

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 4/10

9:30 pm-10:52 pm

2 stops24h 22m

Idaho Falls Fanning Field

Fri 4/17

4:59 pm-8:10 am

1 stop16h 11m

$373
Quickest round-trip

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 7/8

6:00 am-10:39 am

1 stop3h 39m

Idaho Falls Fanning Field

Mon 7/13

6:50 pm-11:41 pm

1 stop5h 51m

$476

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 4/7

1:35 pm-10:52 pm

1 stop8h 17m

Idaho Falls Fanning Field

Tue 4/14

4:59 pm-10:36 am

1 stop18h 37m

$483

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 3/30

3:42 pm-10:52 pm

1 stop6h 10m

Idaho Falls Fanning Field

Fri 4/3

4:59 pm-10:38 pm

1 stop6h 39m

$487
Cheapest one-way

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sat 4/4

3:42 pm-10:52 pm

1 stop6h 10m

$179

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 4/13

5:05 pm-10:40 pm

1 stop4h 35m

$189
Quickest one-way

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 6/15

10:30 am-1:06 pm

Nonstop1h 36m

$209

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 4/7

5:02 pm-10:16 pm

1 stop4h 14m

$210

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 4/20

9:35 pm-10:52 pm

2 stops24h 17m

$231

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 13 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 March.
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 March 15, 2026.
Read through reviews of airlines operating flights from Portland to Idaho Falls, such as Alaska Airlines,Delta, andHawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,050 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Alaska Airlines
7.9
Good
12,050 reviews
Alaska Airlines
7.9
Good
12,050 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Delta
7.9
Good
8,293 reviews
Alaska Airlines
7.9
Good
12,050 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Hawaiian Airlines
7.8
Good
2,839 reviews
Alaska Airlines
7.9
Good
12,050 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Allegiant Air
7.3
Good
713 reviews
Alaska Airlines
7.9
Good
12,050 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Overall

7.9

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

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 12h 55m. 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 84% 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 $154 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 $88, our data shows the cheapest flight currently is $68. When looking at the most popular route, (Portland - Idaho Falls Fanning Field), you can expect to pay $106 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 March 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$44Average$98FlexibilityNo cancel feeOn-time88%
DeltaCheapest$162Average$386FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$178Average$359FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$193Average$426FlexibilityNo cancel feeOn-time75%

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