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$51+ Cheap flights from Portland (PDX) to Idaho

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BOI
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Portland to Idaho

Keep the following information in mind while searching for Portland to Idaho flight deals. Data was last updated September 11, 2025.

Round-trip from

$137
(Alaska Airlines)

One-way from

$51
(Southwest)

Popular in

December

Cheapest in

April

Average price

$266

Good round-trip deal

$166 or less

Good one-way deal

$119 or less
From Portland to Idaho
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One-way flight from Portland to Idaho
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Highest demand for flights based on searches. 3% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Portland to Idaho.
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Price to beat on a one-way flight from Portland to Idaho.
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Find flight deals from Portland to Idaho

Cheapest flights from Portland to Idaho
Explore the most affordable flight options available from Portland to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/77:00 amPDX - GEG
Nonstop1h 05mAlaska Airlines
Sat 10/115:05 amGEG - PDX
Nonstop1h 15mAlaska Airlines
Deal found 9/10$137
This Delta deal was found by Cheapflights users on 9/10. 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 10/285:30 amPDX - BOI
1 stop4h 31mDelta
Tue 11/47:40 amBOI - PDX
1 stop6h 09mDelta
Deal found 9/10$137
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Tue 10/285:30 pmPDX - BOI
1 stop3h 50mHawaiian Airlines
Sat 11/15:54 amBOI - PDX
Nonstop1h 26mHawaiian Airlines
Deal found 9/9$138
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:30 pmPDX - BOI
1 stop3h 50mHawaiian Airlines
Sat 11/14:06 pmBOI - PDX
Nonstop1h 25mHawaiian Airlines
Deal found 9/9$139
This Southwest deal was found by Cheapflights users on 9/9. 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.
Wed 10/18:40 amPDX - BOI
1 stop5h 30mSouthwest
Fri 10/33:55 pmBOI - PDX
1 stop8h 45mSouthwest
Deal found 9/9$140
This Hawaiian Airlines deal was found by Cheapflights users on 9/11. 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 10/89:40 pmPDX - BOI
Nonstop1h 17mHawaiian Airlines
Wed 10/1510:15 amBOI - PDX
1 stop4h 30mHawaiian Airlines
Deal found 9/11$141
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sun 10/269:36 pmPDX - BOI
Nonstop1h 23mAlaska Airlines
Tue 11/44:20 pmBOI - PDX
Nonstop1h 25mAlaska Airlines
Deal found 9/9$144
This Hawaiian Airlines deal was found by Cheapflights users on 9/10. 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 10/11:24 pmPDX - BOI
1 stop3h 52mHawaiian Airlines
Tue 10/74:01 pmBOI - PDX
Nonstop1h 21mHawaiian Airlines
Deal found 9/10$147
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 10/15:45 pmPDX - BOI
1 stop4h 35mSouthwest
Mon 10/66:55 pmBOI - PDX
1 stop4h 20mSouthwest
Deal found 9/10$155
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/79:59 pmPDX - GEG
Nonstop1h 09mAlaska Airlines
Mon 10/137:37 pmGEG - PDX
Nonstop1h 13mAlaska Airlines
Deal found 9/10$157
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 10/289:36 pmPDX - BOI
Nonstop1h 23mAlaska Airlines
Sun 11/25:54 amBOI - PDX
Nonstop1h 26mAlaska Airlines
Deal found 9/9$157
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:20 pmPDX - BOI
1 stop4h 00mSouthwest
Mon 10/66:55 pmBOI - PDX
1 stop4h 20mSouthwest
Deal found 9/8$158

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Idaho 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 September 11, 2025.
Use the filters below to find and compare flights from Portland to Idaho that are best for you.

Fly from

Portland

Fly to

Idaho

Route

Depart

Return

Price

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Tue 10/7

9:59 pm-11:08 pm

Nonstop1h 09m

Spokane

Tue 10/14

5:05 am-6:20 am

Nonstop1h 15m

$137

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Wed 10/8

7:00 am-8:05 am

Nonstop1h 05m

Spokane

Wed 10/15

7:37 pm-8:50 pm

Nonstop1h 13m

$137

PortlandBoise

PDX - BOI

PDXBOI

Portland

Wed 11/5

5:30 am-11:01 am

1 stop4h 31m

Boise Air Term. Gowen Fld

Tue 11/11

5:17 am-8:35 am

1 stop4h 18m

$137

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Tue 10/7

9:59 pm-11:08 pm

Nonstop1h 09m

Spokane

Tue 10/14

12:34 pm-1:47 pm

Nonstop1h 13m

$137

PortlandBoise

PDX - BOI

PDXBOI

Portland

Wed 10/29

1:30 pm-8:16 pm

1 stop5h 46m

Boise Air Term. Gowen Fld

Tue 11/4

11:12 am-4:05 pm

1 stop5h 53m

$137

PortlandBoise

PDX - BOI

PDXBOI

Portland

Tue 10/28

5:30 am-11:01 am

1 stop4h 31m

Boise Air Term. Gowen Fld

Sat 11/1

7:40 am-12:49 pm

1 stop6h 09m

$137

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Wed 10/8

10:34 am-11:39 am

Nonstop1h 05m

Spokane

Thu 10/16

5:05 am-6:20 am

Nonstop1h 15m

$157

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Fri 10/10

9:59 pm-11:08 pm

Nonstop1h 09m

Spokane

Sat 10/11

5:05 am-6:20 am

Nonstop1h 15m

$157

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Tue 10/7

7:59 pm-11:01 pm

1 stop3h 02m

Spokane

Tue 10/14

7:23 pm-11:57 pm

1 stop4h 34m

$157

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Wed 10/8

7:00 am-8:05 am

Nonstop1h 05m

Spokane

Sun 10/12

5:05 am-6:20 am

Nonstop1h 15m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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

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

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

Currently, October is the cheapest month in which you can book a flight from Portland to Idaho (average of $314). Flying from Portland to Idaho in June is currently the most expensive (average of $398). 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 PDX to ID?

Find hourly flight availability from Portland to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

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

Weekly flight availability from Portland to Idaho

Explore weekly flight availability from Portland to Idaho. 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 September 11, 2025.

The most flights from PDX to USID are scheduled on a Wednesday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Portland to Idaho by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Allegiant Air
7.2
Good
702 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Spirit Airlines
6.3
Okay
8,023 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Portland to Idaho. 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 from for flights from Portland to Idaho?

    For a flight from Portland to Idaho, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city.

  • How popular is this Portland to Idaho flight route?

    This flight path from Portland to Idaho was viewed by 7 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 Portland to Idaho?

    Airlines like Alaska Airlines, Hawaiian Airlines, and Delta fly from Portland to Idaho in about 1h 05m. The time it takes to get you to your destination can typically vary by up to 3h 26m. The distance between Portland and Idaho is about 278 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from Portland to Idaho are Southwest ($51), Hawaiian Airlines ($79), and Alaska Airlines ($89).

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

    When deciding which route to take from Portland to Idaho consider Portland - Boise Air Term. Gowen Fld, Portland - Spokane or Portland - Idaho Falls Fanning Field as they are the most popular.

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

    Consider Condor (94%), Horizon Air (92%) or Alaska Airlines (92%) when booking your flight. These represent the most reliable airlines when flying from Portland to Idaho.

  • What are the cheapest flights from Portland to Idaho?

    Looking for the cheapest flight from Portland to Idaho? While on average our users pay $180, our data indicates the cheapest price to be $79. The most popular route (Portland - Boise Air Term. Gowen Fld), is priced around $110.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Idaho 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 Portland to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Portland to Idaho (average of $314). Flying from Portland to Idaho in June is currently the most expensive (average of $398). 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.

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Top 5 airlines flying from Portland to Idaho

Discover the top 5 airlines that operate flights from Portland to Idaho. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$56Average$103FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$114Average$155FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$147Average$330FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$153Average$393FlexibilityNo cancel feeOn-time75%
DeltaCheapest$166Average$418FlexibilityNo cancel feeOn-timeN/A

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