HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho Falls

$64+ 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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IDA
May 17 — May 241
Sat 5/17
Sat 5/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Idaho Falls with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$64
(Booking.com)

Popular in

September

Cheapest in

June

Average price

$162

Good round-trip deal

$84 or less

Good one-way deal

$48 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. 45% potential increase in price ($195 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
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

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 May 12, 2025.

This Mytrip deal was found by Cheapflights users on 5/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/131:19 pmPDX - IDA
Nonstop1h 36mAllegiant Air
Mon 6/164:45 pmIDA - PDX
Nonstop1h 37mAllegiant Air
Deal found 5/12$81
This Mytrip deal was found by Cheapflights users on 5/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/181:38 pmPDX - IDA
Nonstop1h 36mMultiple Airlines
Mon 7/216:12 pmIDA - PDX
1 stop20h 48mMultiple Airlines
Deal found 5/12$169
This Hawaiian Airlines deal was found by Cheapflights users on 5/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/173:30 pmPDX - IDA
1 stop6h 08mHawaiian Airlines
Mon 10/206:13 amIDA - PDX
1 stop5h 40mHawaiian Airlines
Deal found 5/12$324
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/93:30 pmPDX - IDA
1 stop6h 08mAlaska Airlines
Sun 10/124:15 pmIDA - PDX
1 stop17h 45mAlaska Airlines
Deal found 5/12$343
This Delta deal was found by Cheapflights users on 5/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/145:30 amPDX - IDA
1 stop4h 09mDelta
Fri 6/203:04 pmIDA - PDX
1 stop4h 07mDelta
Deal found 5/11$369
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/203:42 pmPDX - IDA
2 stops17h 02mUnited Airlines
Mon 6/235:55 pmIDA - PDX
2 stops19h 27mUnited Airlines
Deal found 5/12$596

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 12, 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

Fri 6/13

1:19 pm-3:55 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 6/16

4:45 pm-5:22 pm

Nonstop1h 37m

$81

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 7/18

1:38 pm-4:14 pm

Nonstop1h 36m

Idaho Falls Fanning Field

Mon 7/21

6:12 pm-2:00 pm

1 stop20h 48m

$169

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 10/17

3:30 pm-10:38 pm

1 stop6h 08m

Idaho Falls Fanning Field

Mon 10/20

6:13 am-10:53 am

1 stop5h 40m

$324

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 10/9

3:30 pm-10:38 pm

1 stop6h 08m

Idaho Falls Fanning Field

Sun 10/12

4:15 pm-9:00 am

1 stop17h 45m

$343

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sat 6/14

5:30 am-10:39 am

1 stop4h 09m

Idaho Falls Fanning Field

Fri 6/20

3:04 pm-6:11 pm

1 stop4h 07m

$369

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 6/20

3:42 pm-9:44 am

2 stops17h 02m

Idaho Falls Fanning Field

Mon 6/23

5:55 pm-12:22 pm

2 stops19h 27m

$596

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sat 6/14

5:30 am-10:39 am

1 stop4h 09m

$185

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Tue 6/17

5:35 pm-10:39 pm

1 stop4h 04m

$220

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sat 6/14

3:42 pm-9:44 am

2 stops17h 02m

$368

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

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*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Expedia the most. Expedia 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 July is currently the most expensive (average of $607). 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 May 12, 2025.

It’s typically best to fly out from Portland to Idaho Falls at noon. Doing so could potentially save you 78% on the flight price compared to flying in the evening, which is usually more expensive.

Rainfall in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

Plan your trip to Idaho Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,431 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
734 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 popular is this Portland to Idaho Falls flight route?

    Within the past month, 1 users have taken a look at flights from Portland to Idaho Falls Fanning Field.

  • 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 $64 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $324 and $343 round-trip. These flights start at 73% 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 $185 on Delta. Other airlines that offer cheap prices include Alaska Airlines from $220 and United Airlines from $368 one-way.

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

    While on average a flight from Portland to Idaho Falls is generally $74, our data shows the cheapest flight currently is $44. When looking at the most popular route, (Portland - Idaho Falls Fanning Field), you can expect to pay $171 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, 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 July is currently the most expensive (average of $607). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
Rexburg

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$83Average$114FlexibilityNo cancel feeOn-time88%
DeltaCheapest$171Average$445FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$290Average$455FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.