Idaho

$49+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BOI
Apr 14 — Apr 211
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Cheap 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 March 15, 2026.

This Gotogate deal was found by Cheapflights users on 3/12. 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 6/83:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 6/196:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 3/12$106
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/612:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 7/133:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Deal found 3/11$108
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 4/112:48 pm
PDX
-
BOI
Nonstop1h 22m
Alaska Airlines
Wed 4/158:26 pm
BOI
-
PDX
Nonstop1h 21m
Alaska Airlines
Deal found 3/12$137
This Southwest deal was found by Cheapflights users on 3/10. 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.
Sun 5/175:00 am
PDX
-
BOI
1 stop3h 55m
Southwest
Tue 5/195:00 pm
BOI
-
PDX
1 stop6h 25m
Southwest
Deal found 3/10$154
This Expedia deal was found by Cheapflights users on 3/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:30 am
PDX
-
GEG
Nonstop1h 16m
Alaska Airlines
Sat 4/255:05 am
GEG
-
PDX
Nonstop1h 11m
Alaska Airlines
Deal found 3/13$157
This Delta deal was found by Cheapflights users on 3/12. 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.
Thu 4/25:36 pm
PDX
-
BOI
1 stop5h 10m
Delta
Tue 4/75:52 am
BOI
-
PDX
1 stop3h 42m
Delta
Deal found 3/12$157
This Southwest deal was found by Cheapflights users on 3/12. 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.
Mon 5/46:00 am
PDX
-
BOI
2 stops8h 40m
Southwest
Wed 5/66:40 am
BOI
-
PDX
2 stops8h 00m
Southwest
Deal found 3/12$167
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:45 pm
PDX
-
BOI
1 stop9h 35m
Southwest
Wed 4/157:05 am
BOI
-
PDX
1 stop7h 35m
Southwest
Deal found 3/11$168
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sun 4/267:19 am
PDX
-
GEG
Nonstop1h 21m
Alaska Airlines
Sun 5/35:00 am
GEG
-
PDX
1 stop4h 31m
Alaska Airlines
Deal found 3/12$172
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 4/42:48 pm
PDX
-
BOI
Nonstop1h 22m
Alaska Airlines
Sat 4/48:26 pm
BOI
-
PDX
Nonstop1h 21m
Alaska Airlines
Deal found 3/12$172
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:30 am
PDX
-
GEG
1 stop3h 20m
Delta
Sun 4/56:15 am
GEG
-
PDX
1 stop3h 47m
Delta
Deal found 3/11$177
This Delta deal was found by Cheapflights users on 3/10. 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.
Fri 4/105:36 pm
PDX
-
BOI
1 stop3h 28m
Delta
Mon 4/138:40 pm
BOI
-
PDX
1 stop4h 16m
Delta
Deal found 3/10$177

Find flight deals from Portland to Idaho

Keep the following information in mind while searching for Portland to Idaho flight deals. Data was last updated March 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$106
(Gotogate)

One-way from

$49
(Mytrip)

Popular in

January

Cheapest in

April

Average price

$318

Good round-trip deal

$88 or less

Good one-way deal

$213 or less
Provider with most accurate pricing for Portland-Boise Air Term. Gowen Fld flight deals.
Provider most trusted by Cheapflights users for Portland-Boise Air Term. Gowen Fld flights.
From Portland to Idaho
One-way flight from Portland to Idaho
Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from Portland to Idaho.
Price to beat on a one-way flight from Portland to Idaho.

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 March 15, 2026.
Use the filters below to find and compare flights from Portland to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBoise

PDX - BOI

PDXBOI

Portland

Sat 4/11

7:00 am-9:15 am

Nonstop1h 15m

Boise Air Term. Gowen Fld

Wed 4/15

4:23 pm-4:45 pm

Nonstop1h 22m

$137

PortlandBoise

PDX - BOI

PDXBOI

Portland

Sun 4/5

5:30 am-5:55 pm

1 stop11h 25m

Boise Air Term. Gowen Fld

Mon 4/6

7:25 pm-1:25 am

1 stop7h 00m

$162

PortlandBoise

PDX - BOI

PDXBOI

Portland

Mon 5/4

6:00 am-3:40 pm

2 stops8h 40m

Boise Air Term. Gowen Fld

Tue 5/5

2:00 pm-8:30 pm

2 stops7h 30m

$167

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Wed 5/6

10:30 am-11:46 am

Nonstop1h 16m

Spokane

Sat 5/9

5:00 am-10:56 am

1 stop5h 56m

$172

PortlandBoise

PDX - BOI

PDXBOI

Portland

Thu 5/7

1:52 pm-11:59 pm

1 stop9h 07m

Boise Air Term. Gowen Fld

Mon 5/18

8:28 pm-8:50 pm

Nonstop1h 22m

$181

PortlandBoise

PDX - BOI

PDXBOI

Portland

Fri 5/8

9:40 pm-11:59 pm

Nonstop1h 19m

Boise Air Term. Gowen Fld

Sun 5/10

6:00 am-9:31 am

1 stop4h 31m

$181

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Tue 4/7

5:30 am-8:50 am

1 stop3h 20m

Spokane

Tue 4/14

1:07 pm-5:10 pm

1 stop4h 03m

$197

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Tue 3/31

8:05 pm-12:03 am

1 stop3h 58m

Spokane

Thu 4/2

5:00 am-8:34 am

1 stop3h 34m

$197

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Sun 4/5

5:30 am-8:50 am

1 stop3h 20m

Spokane

Thu 4/9

6:15 am-10:02 am

1 stop3h 47m

$197

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Wed 4/22

7:32 pm-11:15 pm

1 stop3h 43m

Spokane

Fri 4/24

6:15 am-9:58 am

1 stop3h 43m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 60 resultsSorted by cheapest first
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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, July is the cheapest month in which you can book a flight from Portland to Idaho (average of $44). Flying from Portland to Idaho in January is currently the most expensive (average of $144). 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 March 15, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 27% on flights from Portland to Idaho by exploring options for tickets at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Portland to Idaho. Price data was last updated on March 14, 2026.

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

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 March 15, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andHawaiian 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.

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

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

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

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

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

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

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

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

Entertainment

7.0

Comfort

7.8

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.1

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 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?

  • How long is the flight from Portland to Idaho?

    Airlines like Alaska Airlines, Southwest, and Delta fly from Portland to Idaho in about 1h 15m. The time it takes to get you to your destination can typically vary by up to 10h 10m. The distance between Portland and Idaho is about 343 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 Allegiant Air ($48), Southwest ($75), and Hawaiian Airlines ($78).

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

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

    Consider Horizon Air (95%), SkyWest Airlines (94%) 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 $416, our data indicates the cheapest price to be $98. The most popular route (Portland - Boise Air Term. Gowen Fld), is priced around $157.

  • 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, July is the cheapest month in which you can book a flight from Portland to Idaho (average of $44). Flying from Portland to Idaho in January is currently the most expensive (average of $144). 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

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Alternative routes for Portland to Idaho

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Portland to Idaho

Discover the top 4 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 March 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$44Average$98FlexibilityNo cancel feeOn-time88%
DeltaCheapest$136Average$360FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$137Average$382FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$138Average$327FlexibilityNo cancel feeOn-time85%

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