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$179+ Cheap flights from Idaho Falls to Portland (IDA - PDX)

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — PDX
Oct 26 — Nov 21
Sun 10/26
Sun 11/2
1 adult, Economy
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Cheapflights Tip: The best prices from Idaho Falls Fanning Field to Portland are usually found in April or May, booked 22 days in advance, depart on a Monday or Thursday and return on a Thursday

Cheap flight deals from Idaho Falls to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Portland (PDX). 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 September 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$232
(Kiwi.com)

One-way from

$179
(Alaska Airlines)

Popular in

September

Cheapest in

April

Average price

$418
Provider with most accurate pricing for Idaho Falls Fanning Field-Portland flight deals.
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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Portland flights.
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From Idaho Falls Fanning Field to Portland
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One-way flight from Idaho Falls Fanning Field to Portland
Search Deals
Highest demand for flights based on searches. 33% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Idaho Falls to Portland

Cheapest flights from Idaho Falls to Portland
Explore the most affordable flight options available from Idaho Falls to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/24. 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 11/1410:56 pmIDA - PDX
2 stops38h 27mMultiple Airlines
Fri 11/211:54 pmPDX - IDA
Nonstop1h 38mMultiple Airlines
Deal found 9/24$232
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:19 pmIDA - PDX
2 stops23h 15mMultiple Airlines
Fri 12/512:01 pmPDX - IDA
Nonstop1h 35mMultiple Airlines
Deal found 9/25$241
This Alaska Airlines deal was found by Cheapflights users on 9/25. 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.
Wed 10/293:50 pmIDA - PDX
1 stop5h 47mAlaska Airlines
Wed 11/52:30 pmPDX - IDA
1 stop8h 29mAlaska Airlines
Deal found 9/25$257
This Alaska Airlines deal was found by Cheapflights users on 9/24. 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.
Fri 10/174:15 pmIDA - PDX
1 stop15h 05mAlaska Airlines
Tue 10/212:30 pmPDX - IDA
1 stop7h 08mAlaska Airlines
Deal found 9/24$267
This Alaska Airlines deal was found by Cheapflights users on 9/25. 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.
Tue 12/26:00 amIDA - PDX
1 stop4h 32mAlaska Airlines
Sat 12/69:37 amPDX - IDA
1 stop5h 50mAlaska Airlines
Deal found 9/25$280
This Alaska Airlines deal was found by Cheapflights users on 9/25. 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.
Wed 10/226:00 amIDA - PDX
1 stop7h 25mAlaska Airlines
Sun 10/265:30 pmPDX - IDA
1 stop20h 43mAlaska Airlines
Deal found 9/25$290
This Alaska Airlines deal was found by Cheapflights users on 9/24. 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.
Fri 10/244:15 pmIDA - PDX
1 stop19h 33mAlaska Airlines
Fri 10/317:30 amPDX - IDA
1 stop6h 43mAlaska Airlines
Deal found 9/24$300
This Alaska Airlines deal was found by Cheapflights users on 9/25. 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.
Tue 12/25:07 pmIDA - PDX
1 stop8h 12mAlaska Airlines
Sun 12/75:49 pmPDX - IDA
1 stop5h 13mAlaska Airlines
Deal found 9/25$312

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Portland 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 September 26, 2025.
Use the filters below to find and compare flights from Idaho Falls to Portland that are best for you.

Fly from

Idaho Falls

Fly to

Portland

Route

Depart

Return

Price

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 1/24

8:00 am-1:46 pm

1 stop6h 46m

Portland

Sat 1/31

8:40 am-3:23 pm

1 stop5h 43m

$257

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Wed 10/29

3:50 pm-8:37 pm

1 stop5h 47m

Portland

Wed 11/5

2:30 pm-11:59 pm

1 stop8h 29m

$257

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 11/14

10:56 pm-11:56 am

3 stops38h 00m

Portland

Fri 11/21

1:54 pm-4:32 pm

Nonstop1h 38m

$263

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 10/17

4:15 pm-6:20 am

1 stop15h 05m

Portland

Tue 10/21

2:30 pm-10:38 pm

1 stop7h 08m

$267

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 1/24

1:05 pm-7:11 pm

2 stops7h 06m

Portland

Sat 1/31

1:38 pm-10:21 pm

2 stops7h 43m

$269

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Tue 12/2

6:00 am-9:32 am

1 stop4h 32m

Portland

Sat 12/6

9:37 am-4:27 pm

1 stop5h 50m

$280

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Wed 10/22

6:00 am-12:25 pm

1 stop7h 25m

Portland

Sun 10/26

5:30 pm-3:13 pm

1 stop20h 43m

$290

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Thu 12/4

5:07 pm-8:22 pm

1 stop4h 15m

Portland

Sat 12/6

9:37 am-4:27 pm

1 stop5h 50m

$290

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 11/7

3:50 pm-10:32 am

1 stop19h 42m

Portland

Mon 11/10

10:28 pm-3:13 pm

1 stop15h 45m

$290

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 10/17

4:15 pm-10:48 am

1 stop19h 33m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 14 results
1
2

Compare providers for flights from Idaho Falls to Portland

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 Idaho Falls to Portland in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice 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 Idaho Falls-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-Portland 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 Idaho Falls-Portland 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 Idaho Falls to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Idaho Falls 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 Idaho Falls to Portland

How far ahead should I book a flight from Idaho Falls to Portland?

Use this chart to determine the optimal time to book a round-trip flight from Idaho Falls to Portland. Price data was last updated on September 19, 2025.

The best time to book flights from Idaho Falls to Portland is 22 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Idaho Falls to Portland?

Currently, November is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $277). Flying from Idaho Falls to Portland in March is currently the most expensive (average of $368). 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 IDA to PDX?

Find hourly flight availability from Idaho Falls to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 26, 2025.

One of the essential ways to save on airfare from Idaho Falls to Portland is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 79% on airfare.

What is the cheapest day to fly from Idaho Falls to Portland?

Use this chart to determine the cheapest time to fly round-trip from Idaho Falls to Portland. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Idaho Falls to Portland flight should consider departing on Monday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated September 26, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Idaho Falls to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,752 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Allegiant Air
7.2
Good
699 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Portland. 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 Idaho Falls to Portland flight route?

    This flight path from Idaho Falls Fanning Field to Portland was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    There are many flights that can get you from Idaho Falls to Portland in 7h 06m. Fly via Alaska Airlines or Delta to get the fastest option. Idaho Falls and Portland are separated by a distance of 537 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Idaho Falls to Portland round-trip?

    Flying on Allegiant Air is currently your cheapest option to Portland, with prices starting at $51. Additional round-trip tickets that might be worth considering are offered by Hawaiian Airlines and Alaska Airlines, with the lowest prices starting at $162 and $232, respectively. Allegiant Air is currently priced 75% below the average price you’ll pay for this route.

  • Can I find deals for flights from Idaho Falls to Portland that include hotel bookings?

    Yes. In addition to deals on Idaho Falls to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho Falls to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho Falls to Portland.

  • Can I find deals for business class flights from Idaho Falls to Portland?

    Yes. Cheapflights offers flight deals from Idaho Falls to Portland 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 Idaho Falls to Portland?

    Currently, November is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $277). Flying from Idaho Falls to Portland in March is currently the most expensive (average of $368). 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
Vancouver
Seaside
Beaverton
Clackamas
McMinnville
Lake Oswego
Hillsboro
Cannon Beach
Long Beach
Longview
Lincoln City
Tigard
Depoe Bay
Stevenson
Wilsonville
Pacific City
Tillamook
Troutdale
Gresham
Silverton

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Idaho Falls to Portland

Discover the top 4 airlines that operate flights from Idaho Falls to Portland. 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 September 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$51Average$109FlexibilityNo cancel feeOn-time88%
Hawaiian AirlinesCheapest$162Average$232FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$232Average$431FlexibilityNo cancel feeOn-time75%
DeltaCheapest$296Average$418FlexibilityNo cancel feeOn-timeN/A

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