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$78+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — PDX
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 Wednesday and return on a Friday

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 July 29, 2025.

Round-trip from

$108
(Booking.com)

One-way from

$78
(Booking.com)

Popular in

August

Cheapest in

April

Average price

$179

Good round-trip deal

$105 or less

Good one-way deal

$64 or less
From Idaho Falls Fanning Field to Portland
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One-way flight from Idaho Falls Fanning Field to Portland
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Highest demand for flights based on searches. 30% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Idaho Falls Fanning Field to Portland.
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Price to beat on a one-way flight from Idaho Falls Fanning Field to Portland.
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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 July 29, 2025.

This Booking.com deal was found by Cheapflights users on 7/28. 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 12/123:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Mon 12/1512:01 pmPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 7/28$108
This Mytrip deal was found by Cheapflights users on 7/26. 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 8/115:04 pmIDA - PDX
Nonstop1h 37mMultiple Airlines
Thu 8/147:52 pmPDX - IDA
1 stop14h 38mMultiple Airlines
Deal found 7/26$222
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 10/293:50 pmIDA - PDX
1 stop5h 47mHawaiian Airlines
Wed 11/57:30 amPDX - IDA
1 stop6h 43mHawaiian Airlines
Deal found 7/29$282
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 9/163:57 pmIDA - PDX
1 stop15h 20mAlaska Airlines
Tue 9/234:46 pmPDX - IDA
1 stop4h 53mAlaska Airlines
Deal found 7/26$284
This Delta deal was found by Cheapflights users on 7/26. 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.
Wed 9/176:51 pmIDA - PDX
2 stops6h 01mDelta
Sat 9/203:35 pmPDX - IDA
2 stops5h 50mDelta
Deal found 7/26$295

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 July 29, 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 12/12

3:26 pm-4:11 pm

Nonstop1h 45m

Portland

Mon 12/15

12:01 pm-2:36 pm

Nonstop1h 35m

$108

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Mon 8/11

5:04 pm-5:41 pm

Nonstop1h 37m

Portland

Thu 8/14

7:52 pm-11:30 am

1 stop14h 38m

$222

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

7:30 am-3:13 pm

1 stop6h 43m

$282

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Tue 9/16

3:57 pm-6:17 am

1 stop15h 20m

Portland

Sat 9/20

6:05 am-3:20 pm

1 stop8h 15m

$284

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Wed 9/17

6:51 pm-11:52 pm

2 stops6h 01m

Portland

Sat 9/20

3:35 pm-10:25 pm

2 stops5h 50m

$295

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 8/8

5:04 pm-5:41 pm

Nonstop1h 37m

$78

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 8/30

6:00 am-8:51 am

1 stop3h 51m

$163

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Thu 9/18

3:57 pm-9:25 pm

1 stop6h 28m

$198

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 8/8

7:23 pm-2:15 pm

2 stops19h 52m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 July 25, 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 July 29, 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 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.

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

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 July 29, 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

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Allegiant Air
7.2
Good
702 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

  • 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 $108. Additional round-trip tickets that might be worth considering are offered by Hawaiian Airlines and Alaska Airlines, with the lowest prices starting at $282 and $284, respectively. Allegiant Air is currently priced 50% below the average price you’ll pay for this route.

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

    $78 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 $163 and $198, respectively.

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

    Looking at all options, your cheapest flight can be booked for $52. While the most popular route (Idaho Falls Fanning Field - Portland) can be booked for $108 on average our data indicates $106 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, 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
Lincoln City
McMinnville
Lake Oswego
Hillsboro
Astoria
Cannon Beach
Long Beach
Longview
Tigard
Depoe Bay
Woodburn
Stevenson
Wilsonville
Pacific City
Troutdale
Tillamook

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Idaho Falls to Portland

Discover the top 3 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$64Average$109FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$232Average$405FlexibilityNo cancel feeOn-time75%
DeltaCheapest$290Average$412FlexibilityNo cancel feeOn-timeN/A

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