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Idaho Falls

$36+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
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 May 7, 2026.

This Mytrip deal was found by Cheapflights users on 5/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1712:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 7/243:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Deal found 5/6$71
This Trip.com deal was found by Cheapflights users on 5/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/13:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Mon 6/86:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 5/5$81
This Super.com deal was found by Cheapflights users on 5/6. 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 5/293:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Mon 6/16:39 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Deal found 5/6$82
This Super.com deal was found by Cheapflights users on 5/2. 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 5/223:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Fri 6/266:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 5/2$87
This Gotogate deal was found by Cheapflights users on 5/2. 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.
Fri 7/1012:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 7/173:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Deal found 5/2$92
This Super.com deal was found by Cheapflights users on 5/6. 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 6/53:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 6/126:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 5/6$93
This Mytrip deal was found by Cheapflights users on 5/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/263:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 6/296:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 5/5$100
This Super.com deal was found by Cheapflights users on 5/6. 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 5/223:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Mon 5/256:39 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Deal found 5/6$104
This Mytrip deal was found by Cheapflights users on 5/6. 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 Mytrip 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 5/6$109
This Kiwi.com deal was found by Cheapflights users on 5/4. 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
Allegiant Air
Fri 6/126:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 5/4$115
This Gotogate deal was found by Cheapflights users on 5/6. 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 7/612:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 7/173:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Deal found 5/6$123

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 May 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$71
(Mytrip)

One-way from

$36
(Kiwi.com)

Popular in

January

Cheapest in

June

Average price

$162

Good round-trip deal

$92 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. 17% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 7, 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

Fri 6/5

10:30 am-1:17 pm

Nonstop1h 47m

Idaho Falls Fanning Field

Mon 6/8

4:03 pm-4:50 pm

Nonstop1h 47m

$252

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 6/3

10:30 am-1:17 pm

Nonstop1h 47m

Idaho Falls Fanning Field

Thu 6/4

4:03 pm-4:50 pm

Nonstop1h 47m

$317
Quickest round-trip

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/20

10:30 am-1:06 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Thu 8/27

4:14 pm-4:50 pm

Nonstop1h 36m

$357

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 6/12

10:30 am-1:06 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 6/15

4:14 pm-4:50 pm

Nonstop1h 36m

$357

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 6/3

2:35 pm-10:53 pm

2 stops7h 18m

Idaho Falls Fanning Field

Wed 6/10

4:14 pm-4:50 pm

Nonstop1h 36m

$407

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 6/26

10:30 am-1:06 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Sun 6/28

7:15 am-11:30 pm

1 stop17h 15m

$425

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 7/10

9:19 am-3:37 pm

1 stop5h 18m

Idaho Falls Fanning Field

Fri 7/17

7:15 am-11:21 am

1 stop5h 06m

$437
Cheapest one-way

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 5/22

3:10 pm-5:49 pm

Nonstop1h 39m

$42

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 5/25

3:10 pm-5:49 pm

Nonstop1h 39m

$77

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 6/2

5:05 pm-10:42 pm

1 stop4h 37m

$150

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/5

Showing 1-10 of 18 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 May.
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, June is the cheapest month in which you can book a flight from Portland to Idaho Falls (average of $104). 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.

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

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 May 7, 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
12,336 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,336 reviews
Alaska Airlines
7.9
Good
12,336 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Delta
7.9
Good
8,460 reviews
Alaska Airlines
7.9
Good
12,336 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Hawaiian Airlines
7.8
Good
2,837 reviews
Alaska Airlines
7.9
Good
12,336 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Allegiant Air
7.3
Good
708 reviews
Alaska Airlines
7.9
Good
12,336 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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 1h 47m. Portland and Idaho Falls are separated by a distance of 537 mi. Most flights are nonstop.

  • 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 $203, our data shows the cheapest flight currently is $55. When looking at the most popular route, (Portland - Idaho Falls Fanning Field), you can expect to pay $71 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, June is the cheapest month in which you can book a flight from Portland to Idaho Falls (average of $104). 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?

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 May 7, 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$403FlexibilityNo cancel feeOn-time75%

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