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$84+ Cheap flights from Idaho to Portland (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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PDX
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Idaho to Portland

Cheapest flights from Idaho to Portland
Explore the most affordable flight options available from Idaho 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 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.
Wed 12/315:00 amGEG - PDX
1 stop3h 38mDelta
Sun 1/47:30 pmPDX - GEG
1 stop4h 37mDelta
Deal found 12/21$388
This Southwest deal was found by Cheapflights users on 12/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:45 pmBOI - PDX
1 stop5h 20mSouthwest
Tue 1/67:25 amPDX - BOI
1 stop6h 30mSouthwest
Deal found 12/20$393
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 12/20. 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.
Mon 12/295:00 amGEG - PDX
Nonstop1h 25mAlaska Airlines
Sat 1/35:42 pmPDX - GEG
Nonstop1h 04mAlaska Airlines
Deal found 12/20$406
This Delta deal was found by Cheapflights users on 12/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:23 pmGEG - PDX
1 stop4h 32mDelta
Sat 1/35:25 pmPDX - GEG
1 stop3h 50mDelta
Deal found 12/20$407
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:40 amBOI - PDX
1 stop3h 58mDelta
Mon 1/57:10 amPDX - BOI
1 stop4h 50mDelta
Deal found 12/22$408
This Alaska Airlines deal was found by Cheapflights users on 12/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:00 amGEG - PDX
Nonstop1h 26mAlaska Airlines
Sat 1/37:00 amPDX - GEG
Nonstop1h 06mAlaska Airlines
Deal found 12/20$408

Find flight deals from Idaho to Portland

Keep the following information in mind while searching for Idaho to Portland flight deals. Data was last updated December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$137
(Delta)

One-way from

$84
(Southwest)

Popular in

March

Cheapest in

August

Average price

$277

Good round-trip deal

$114 or less

Good one-way deal

$211 or less
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Portland flights.
Search Deals
From Idaho to Portland
Search Deals
One-way flight from Idaho to Portland
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 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 to Portland.
Search Deals
Price to beat on a one-way flight from Idaho to Portland.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho 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 to Portland that are best for you.

Fly from

Idaho

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

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Tue 1/13

3:43 pm-5:59 pm

1 stop3h 16m

Portland

Wed 1/21

5:45 pm-8:09 pm

Nonstop1h 24m

$142

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Mon 1/12

6:23 am-12:38 pm

1 stop7h 15m

Portland

Tue 1/20

2:41 pm-5:01 pm

Nonstop1h 20m

$142

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Mon 1/12

5:55 pm-8:47 pm

1 stop3h 52m

Portland

Wed 1/21

5:45 pm-8:09 pm

Nonstop1h 24m

$142

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Sun 1/18

6:23 am-9:29 am

1 stop4h 06m

Portland

Sun 1/25

7:10 am-12:51 pm

1 stop4h 41m

$146

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Wed 1/14

5:55 pm-8:47 pm

1 stop3h 52m

Portland

Wed 1/21

5:35 pm-11:01 pm

1 stop4h 26m

$146

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Sat 1/17

5:55 pm-8:47 pm

1 stop3h 52m

Portland

Wed 1/21

7:38 pm-11:59 pm

1 stop3h 21m

$146

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Mon 1/12

5:55 pm-10:46 pm

1 stop5h 51m

Portland

Sat 1/17

7:10 am-12:51 pm

1 stop4h 41m

$146

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Wed 1/14

3:43 pm-8:47 pm

1 stop6h 04m

Portland

Sat 1/17

7:10 am-12:51 pm

1 stop4h 41m

$146

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 60 results
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Best time to book a flight from Idaho to Portland

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

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

Currently, March is the cheapest month in which you can book a flight from Idaho to Portland (average of $44). Flying from Idaho to Portland in September is currently the most expensive (average of $137). 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 ID to PDX?

Find hourly flight availability from Idaho 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.

When flying from Idaho to Portland, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 58% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Idaho to Portland. Price data was last updated on December 20, 2025.

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

Weekly flight availability from Idaho to Portland

Explore weekly flight availability from Idaho to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 23, 2025.

The most flights from USID to PDX are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

Find useful and relevant information for your journey from Idaho to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Portland from Idaho?

    Portland (PDX), located 6.0 mi from the city center, is the airport you fly into when you book flights from Idaho to Portland.

  • How popular is this Idaho to Portland flight route?

    This flight path from Idaho to Portland was viewed by 18 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 to Portland?

    Delta and Alaska Airlines can get you from Idaho to Portland in just under 3h 16m. Your travel time can differ by up to 3h 04m. There are 343 mi between Idaho and Portland. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Allegiant Air, which is currently one of the cheapest options available, starting at $47. Alaska Airlines flights start at $84 while deals on Southwest start at $88 one-way.

  • What are the most popular routes from Idaho to Portland?

    While some choose either Boise Air Term. Gowen Fld - Portland or Idaho Falls Fanning Field - Portland, Spokane - Portland is the most popular route from Idaho to Portland.

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

    Consider British Airways (89%), Alaska Airlines (89%) or SkyWest Airlines (87%) when booking your flight. These represent the most reliable airlines when flying from Idaho to Portland.

  • What are the cheapest flights from Idaho to Portland?

    Looking for the cheapest flight from Idaho to Portland? While on average our users pay $1,147, our data indicates the cheapest price to be $137. The most popular route (Spokane - Portland), is priced around $147.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 to Portland?

    Currently, March is the cheapest month in which you can book a flight from Idaho to Portland (average of $44). Flying from Idaho to Portland in September is currently the most expensive (average of $137). 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

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Top 4 airlines flying from Idaho to Portland

Discover the top 4 airlines that operate flights from Idaho 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$121Average$286FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$137Average$331FlexibilityNo cancel feeOn-time75%
DeltaCheapest$146Average$367FlexibilityNo cancel feeOn-timeN/A

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