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$56+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — PDX
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
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 62 days in advance, depart on a Friday or Monday and return on a Wednesday

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 March 23, 2026.

This Booking.com deal was found by Cheapflights users on 3/22. 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.
Mon 6/156:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Fri 6/193:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/22$98
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 6/266:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Fri 7/1012:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/18$100
This Booking.com deal was found by Cheapflights users on 3/22. 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 6/266:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Mon 6/293:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/22$110
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 5/256:39 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Fri 5/293:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Deal found 3/19$114
This Gotogate deal was found by Cheapflights users on 3/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/63:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Fri 7/1012:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/18$122
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 7/33:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Mon 7/612:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/20$124
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 5/226:39 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Fri 5/293:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Deal found 3/19$129
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/63:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Mon 7/2012:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/22$145
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 7/203:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Mon 8/312:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/19$150
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 5/226:39 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Mon 5/253:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Deal found 3/19$151
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 7/243:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Mon 8/312:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 3/19$156

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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$98
(Booking.com)

One-way from

$56
(Kiwi.com)

Popular in

January

Cheapest in

April

Average price

$397

Good round-trip deal

$297 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. 27% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 23, 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 - PDX

IDAPDX

Idaho Falls Fanning Field

Thu 5/28

6:00 am-8:52 am

1 stop3h 52m

Portland

Mon 6/1

5:45 am-10:47 am

1 stop4h 02m

$337

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 5/23

11:30 am-3:56 pm

1 stop5h 26m

Portland

Mon 5/25

5:45 am-10:47 am

1 stop4h 02m

$337

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sun 4/26

5:47 am-8:56 am

1 stop4h 09m

Portland

Sat 5/2

5:45 pm-10:40 pm

1 stop3h 55m

$337

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Thu 5/21

4:03 pm-4:50 pm

Nonstop1h 47m

Portland

Tue 5/26

5:46 pm-10:53 pm

1 stop4h 07m

$347

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Tue 5/26

4:03 pm-4:50 pm

Nonstop1h 47m

Portland

Wed 5/27

10:30 am-1:17 pm

Nonstop1h 47m

$357

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 8/22

4:00 pm-4:41 pm

Nonstop1h 41m

Portland

Mon 8/31

11:50 am-2:27 pm

Nonstop1h 37m

$357
Quickest round-trip

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Wed 7/22

4:14 pm-4:50 pm

Nonstop1h 36m

Portland

Mon 8/3

10:30 am-1:06 pm

Nonstop1h 36m

$357

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Wed 9/9

6:10 am-9:03 am

1 stop3h 53m

Portland

Wed 9/16

5:05 pm-10:14 pm

1 stop4h 09m

$376

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sun 5/24

4:03 pm-4:50 pm

Nonstop1h 47m

Portland

Tue 5/26

10:30 am-1:17 pm

Nonstop1h 47m

$397

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 8/28

6:15 am-10:55 am

1 stop5h 40m

Portland

Mon 8/31

11:50 am-2:27 pm

Nonstop1h 37m

$407

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 March 13, 2026.

The best time to book flights from Idaho Falls to Portland is 62 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, April is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $47). 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.

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 March 23, 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
12,101 reviews

Boarding

8.1

Food

7.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

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
12,101 reviews
Alaska Airlines
7.9
Good
12,101 reviews

Boarding

8.1

Food

7.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Delta
7.9
Good
8,318 reviews
Alaska Airlines
7.9
Good
12,101 reviews

Boarding

8.1

Food

7.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

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
710 reviews
Alaska Airlines
7.9
Good
12,101 reviews

Boarding

8.1

Food

7.0

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

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.

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

    This flight path from Idaho Falls Fanning Field to Portland was viewed by 3 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 47m. 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 $51. Additional round-trip tickets that might be worth considering are offered by Delta and Alaska Airlines, with the lowest prices starting at $162 and $211, respectively. Allegiant Air is currently priced 81% below the average price you’ll pay for this route.

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

    $48 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 $86 and $139, respectively.

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

    Looking at all options, your cheapest flight can be booked for $116. While the most popular route (Idaho Falls Fanning Field - Portland) can be booked for $98 on average, our data indicates $384 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, April is the cheapest month in which you can book a flight from Idaho Falls to Portland (average of $47). 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
Hillsboro
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Beaverton
Depoe Bay
Wilsonville
Stevenson
Tillamook
Pacific City
Astoria

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 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$51Average$110FlexibilityNo cancel feeOn-time88%
DeltaCheapest$162Average$448FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$211Average$426FlexibilityNo cancel feeOn-time75%

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