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$137+ Cheap flights from Idaho Falls to Portland (IDA - PDX)

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — PDX
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Find cheap flights from Idaho Falls to Portland 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”

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Cheapflights Tip: The best prices from Idaho Falls Fanning Field to Portland are usually found in April or May, booked 35 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap 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 December 23, 2025.

This Booking.com deal was found by Cheapflights users on 12/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/261:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Mon 12/2910:01 amPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/22$268
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/291:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Mon 1/510:01 amPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/21$289
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/291:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Fri 1/210:01 amPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/21$302
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/261:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Mon 1/510:01 amPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/21$307
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/261:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Fri 1/210:01 amPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/21$321
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/316:00 amIDA - PDX
1 stop4h 50mMultiple Airlines
Mon 1/510:01 amPDX - IDA
Nonstop1h 35mMultiple Airlines
Deal found 12/21$396
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/316:00 amIDA - PDX
1 stop4h 50mMultiple Airlines
Fri 1/210:01 amPDX - IDA
Nonstop1h 35mMultiple Airlines
Deal found 12/21$415
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/261:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Fri 1/27:28 pmPDX - IDA
1 stop3h 39mMultiple Airlines
Deal found 12/21$426
This Delta deal was found by Cheapflights users on 12/21. 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.
Sun 12/285:55 amIDA - PDX
1 stop4h 13mDelta
Sun 1/45:11 pmPDX - IDA
1 stop4h 41mDelta
Deal found 12/21$427
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/291:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Wed 12/315:30 pmPDX - IDA
1 stop5h 37mMultiple Airlines
Deal found 12/21$432
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/266:00 amIDA - PDX
1 stop4h 50mMultiple Airlines
Mon 1/510:01 amPDX - IDA
Nonstop1h 35mMultiple Airlines
Deal found 12/21$459
This Delta deal was found by Cheapflights users on 12/21. 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.
Fri 12/261:10 pmIDA - PDX
1 stop4h 06mDelta
Sun 1/45:11 pmPDX - IDA
1 stop4h 41mDelta
Deal found 12/21$487

Find 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 December 23, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$137
(Delta)

Popular in

September

Cheapest in

April

Average price

$212

Good round-trip deal

$114 or less
Provider with most accurate pricing for Idaho Falls Fanning Field-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Portland flights.
Search Deals
From Idaho Falls Fanning Field to Portland
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Idaho Falls Fanning Field to Portland.
Search Deals

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 December 23, 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

Fri 2/6

6:35 pm-11:55 pm

1 stop6h 20m

Portland

Mon 2/9

10:00 am-5:51 pm

1 stop6h 51m

$137

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Tue 1/20

6:35 pm-11:55 pm

1 stop6h 20m

Portland

Tue 1/27

5:50 am-12:34 pm

1 stop5h 44m

$137

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Mon 1/5

1:26 pm-2:11 pm

Nonstop1h 45m

Portland

Wed 1/14

5:35 pm-10:59 pm

1 stop4h 24m

$192

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 1/2

1:26 pm-2:11 pm

Nonstop1h 45m

Portland

Sun 1/11

12:10 pm-8:30 pm

2 stops31h 20m

$215

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 2/7

9:00 am-12:38 pm

1 stop4h 38m

Portland

Tue 2/10

5:35 pm-10:59 pm

1 stop4h 24m

$244

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 2/7

1:15 pm-8:59 pm

2 stops8h 44m

Portland

Tue 2/10

7:10 am-5:51 pm

2 stops9h 41m

$246

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 2/6

6:58 pm-12:38 pm

1 stop18h 40m

Portland

Mon 2/9

5:35 pm-6:18 pm

1 stop23h 43m

$254

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 1/23

6:58 pm-8:47 pm

1 stop26h 49m

Portland

Mon 1/26

5:35 pm-6:18 pm

1 stop23h 43m

$254

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 1/24

6:58 pm-10:46 pm

1 stop4h 48m

Portland

Sun 1/25

1:38 pm-6:18 pm

1 stop3h 40m

$254

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sun 12/28

5:55 am-9:08 am

1 stop4h 13m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 13 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Idaho Falls-Portland flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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 December 19, 2025.

The best time to book flights from Idaho Falls to Portland is 35 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, March is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $44). Flying from Idaho Falls to Portland in September is currently the most expensive (average of $297). 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 December 23, 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 in the afternoon could potentially save you up to 78% on airfare.

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 December 23, 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
11,513 reviews

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
Alaska Airlines
8.0
Very good
11,513 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
Delta
7.9
Good
8,015 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
Hawaiian Airlines
7.8
Good
2,820 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.
Allegiant Air
7.2
Good
701 reviews
Alaska Airlines
8.0
Very good
11,513 reviews

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Georgana,Dec 2025

ORD - PDX

Very cordial grew. Thank you. However, crying baby issues and no ear plugs available.

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 5 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 4h 38m. Fly via Delta or Alaska Airlines 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 $47. Additional round-trip tickets that might be worth considering are offered by Hawaiian Airlines and Delta, with the lowest prices starting at $162 and $191, respectively. Allegiant Air is currently priced 78% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Idaho Falls to Portland one-way?

    $47 is the cheapest one-way deal found within the past few days, from Allegiant Air. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from $109 and $139, respectively.

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

    Looking at all options, your cheapest flight can be booked for $102. While the most popular route (Idaho Falls Fanning Field - Portland) can be booked for $192 on average, our data indicates $255 when flying from Idaho Falls to Portland.

  • 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, March is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $44). Flying from Idaho Falls to Portland in September is currently the most expensive (average of $297). 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
Clackamas
Lincoln City
Longview
Lake Oswego
Beaverton
McMinnville
Hillsboro
Troutdale
Cannon Beach
Long Beach
Tigard
The Dalles
Depoe Bay
Stevenson
Wilsonville
Tillamook
Pacific City
Gresham

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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$80Average$109FlexibilityNo cancel feeOn-time88%
Hawaiian AirlinesCheapest$162Average$344FlexibilityNo cancel feeOn-time85%
DeltaCheapest$199Average$418FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$232Average$430FlexibilityNo cancel feeOn-time75%

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