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$134+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — PDX
Sep 7 — Sep 141
Mon 9/7
Mon 9/14
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 June or August, booked 84 days in advance, depart on a Friday or Monday 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 August 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:55 pm -
Nonstop1h 41m
Thu 9/1012:24 pm -
1 stop22h 26m
Deal found 8/5$206
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:55 pm -
Nonstop1h 41m
Thu 8/271:47 pm -
1 stop19h 35m
Deal found 8/5$211
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 9/153:57 pm -
Nonstop1h 53m
Sat 9/1910:30 am -
Nonstop1h 54m
Deal found 8/7$237
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 9/153:57 pm -
Nonstop1h 53m
Thu 9/2410:30 am -
Nonstop1h 54m
Deal found 8/7$247
This Delta deal was found by Cheapflights users on 8/7. 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.
Tue 9/156:57 pm -
2 stops5h 57m
Tue 9/225:10 pm -
1 stop4h 12m
Deal found 8/7$252
This Delta deal was found by Cheapflights users on 8/7. 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 9/186:57 pm -
1 stop5h 43m
Sat 9/195:10 pm -
1 stop4h 12m
Deal found 8/7$257
This Delta deal was found by Cheapflights users on 8/7. 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 9/186:57 pm -
2 stops5h 57m
Tue 9/225:10 pm -
1 stop4h 12m
Deal found 8/7$262
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 9/162:01 pm -
1 stop3h 49m
Sun 9/2010:30 am -
Nonstop1h 54m
Deal found 8/7$267
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 8/103:55 pm -
Nonstop1h 41m
Fri 8/1412:25 pm -
Nonstop1h 40m
Deal found 8/8$268

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 August 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Alaska Airlines)

One-way from

$134
(Delta)

Popular in

April

Cheapest in

June

Average price

$136

Good round-trip deal

$147 or less

Good one-way deal

$167 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
One-way flight from Idaho Falls Fanning Field to Portland
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Idaho Falls Fanning Field to Portland.
Search Deals
Price to beat on a one-way 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 August 8, 2026.
Use the filters below to find and compare flights from Idaho Falls to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Wed 9/16

6:57 pm-11:40 pm

1 stop5h 43m

Portland

Wed 9/23

1:20 pm-6:17 pm

1 stop3h 57m

$247
Quickest round-trip

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Fri 10/30

3:57 pm-4:49 pm

Nonstop1h 52m

Portland

Mon 11/2

10:31 am-1:16 pm

Nonstop1h 45m

$257

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Wed 9/16

3:57 pm-4:50 pm

Nonstop1h 53m

Portland

Wed 9/23

10:30 am-1:24 pm

Nonstop1h 54m

$297

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Thu 10/1

3:57 pm-4:50 pm

Nonstop1h 53m

Portland

Mon 10/12

10:30 am-1:21 pm

Nonstop1h 51m

$307

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Thu 8/27

6:00 am-8:37 am

1 stop3h 37m

Portland

Sun 8/30

5:45 am-10:50 am

1 stop4h 05m

$377

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Wed 8/26

7:00 pm-11:39 pm

1 stop5h 39m

Portland

Sun 8/30

5:45 am-10:50 am

1 stop4h 05m

$377

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Fri 8/28

11:35 am-4:03 pm

1 stop5h 28m

Portland

Tue 9/1

5:30 am-2:35 pm

2 stops8h 05m

$382

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Fri 9/11

6:57 pm-10:35 pm

1 stop4h 38m

Portland

Mon 9/14

5:40 am-12:15 pm

1 stop5h 35m

$394
Cheapest one-way

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Fri 9/18

6:57 pm-11:54 pm

2 stops5h 57m

$139
Quickest one-way

Idaho FallsPortland

IDA Idaho Falls Fanning Field - PDX Portland

IDAPDX

Idaho Falls Fanning Field

Thu 9/10

3:57 pm-4:50 pm

Nonstop1h 53m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

Showing 1-10 of 18 resultsSorted by cheapest first
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 August.
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 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?

The best time to book flights from Idaho Falls to Portland is 82 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, June is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $119). Flying from Idaho Falls to Portland in April is currently the most expensive (average of $566). 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 August 8, 2026.

When flying from Idaho Falls to Portland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Airfare is above average for this route at the moment.

Idaho Falls to Portland flights typically cost between $100 and $169 in September.
The cheapest round-trip price found within the last 5 days was $237 on Alaska Airlines (Sep 15-Sep 19).

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 August 8, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andAllegiant Air 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
7.9
Good
12,786 reviews

Boarding

8.1

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Alaska Airlines
7.9
Good
12,786 reviews
Alaska Airlines
7.9
Good
12,786 reviews

Boarding

8.1

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Delta
7.8
Good
8,500 reviews
Alaska Airlines
7.9
Good
12,786 reviews

Boarding

8.1

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Allegiant Air
7.3
Good
679 reviews
Alaska Airlines
7.9
Good
12,786 reviews

Boarding

8.1

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

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.

  • What airports do I use to fly from Idaho Falls to Portland?

    You will need to book a flight from Idaho Falls Fanning Field to Portland if you want to fly from Idaho Falls to Portland. At least 3 different airlines have flights from Fanning Field (IDA) to Portland (PDX) on a regular basis. There is 1 flight to Portland from the Idaho Falls airport per day. If you manage to book one that is nonstop, then you can expect the flight time from IDA to PDX to be around 1h 41m.

  • How popular is this Idaho Falls to Portland flight route?

    This flight path from Idaho Falls Fanning Field to Portland was viewed by 1 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 1h 52m. 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 $82. Additional round-trip tickets that might be worth considering are offered by Delta and Alaska Airlines, with the lowest prices starting at $166 and $176, respectively. Allegiant Air is currently priced 74% below the average price you’ll pay for this route.

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

    $51 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 $114 and $139, respectively.

  • What are the most reliable airlines from Idaho Falls to Portland?

    No one likes to see their flight delayed. When booking a flight from Idaho Falls to Portland consider choosing SkyWest Airlines (78%), Alaska Airlines (78%) or Allegiant Air (62%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $80. While the most popular route (Idaho Falls Fanning Field - Portland) can be booked for $208 on average, our data indicates $250 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, June is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $119). Flying from Idaho Falls to Portland in April is currently the most expensive (average of $566). 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
Beaverton
Seaside
Lincoln City
Durham
Longview
Lake Oswego
Hillsboro
Vancouver
Kelso
Clackamas
Troutdale
Cannon Beach
McMinnville
The Dalles
Wilsonville
Stevenson
Tillamook
Astoria
Gresham
Silverton

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 August 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$119FlexibilityNo cancel feeOn-time88%
DeltaCheapest$166Average$448FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$176Average$426FlexibilityNo cancel feeOn-time75%

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