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$77+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PDX
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
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 August 4, 2026.

This Priceline deal was found by Cheapflights users on 7/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
BOI
-
PDX
Nonstop1h 20m
Alaska Airlines
Tue 9/82:53 pm
PDX
-
BOI
Nonstop1h 22m
Alaska Airlines
Deal found 7/30$177
This Delta deal was found by Cheapflights users on 7/30. 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 9/96:45 am
BOI
-
PDX
1 stop6h 01m
Delta
Sat 9/129:51 am
PDX
-
BOI
1 stop4h 25m
Delta
Deal found 7/30$187
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/73:55 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Fri 8/1412:25 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Deal found 7/30$187
This Kiwi.com deal was found by Cheapflights users on 8/1. 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
IDA
-
PDX
Nonstop1h 41m
Multiple Airlines
Thu 9/1012:24 pm
PDX
-
IDA
1 stop22h 26m
Multiple Airlines
Deal found 8/1$190
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 9/17:00 am
BOI
-
PDX
1 stop3h 45m
Alaska Airlines
Tue 9/110:47 am
PDX
-
BOI
Nonstop1h 25m
Alaska Airlines
Deal found 7/30$191
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 8/297:45 am
BOI
-
PDX
2 stops10h 05m
Southwest
Tue 9/17:05 am
PDX
-
BOI
1 stop5h 35m
Southwest
Deal found 7/30$192
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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
IDA
-
PDX
Nonstop1h 53m
Alaska Airlines
Tue 9/2210:30 am
PDX
-
IDA
Nonstop1h 54m
Alaska Airlines
Deal found 7/29$197
This Kiwi.com deal was found by Cheapflights users on 8/2. 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
IDA
-
PDX
Nonstop1h 41m
Multiple Airlines
Thu 8/271:47 pm
PDX
-
IDA
1 stop19h 35m
Multiple Airlines
Deal found 8/2$199
This Southwest deal was found by Cheapflights users on 7/30. 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 8/284:55 pm
BOI
-
PDX
1 stop7h 20m
Southwest
Sat 8/2911:20 am
PDX
-
BOI
2 stops9h 40m
Southwest
Deal found 7/30$202
This Southwest deal was found by Cheapflights users on 7/30. 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 9/92:20 pm
BOI
-
PDX
2 stops6h 35m
Southwest
Sat 9/126:20 am
PDX
-
BOI
2 stops11h 20m
Southwest
Deal found 7/30$203
This Kiwi.com deal was found by Cheapflights users on 7/30. 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
IDA
-
PDX
Nonstop1h 41m
Multiple Airlines
Thu 8/201:47 pm
PDX
-
IDA
1 stop20h 00m
Multiple Airlines
Deal found 7/30$204
This Expedia deal was found by Cheapflights users on 7/30. 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.
Sun 8/3012:24 pm
BOI
-
PDX
1 stop5h 47m
Multiple Airlines
Sun 9/67:00 am
PDX
-
BOI
Nonstop1h 34m
Multiple Airlines
Deal found 7/30$206

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 August 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Priceline)

One-way from

$77
(Frontier)

Popular in

June

Cheapest in

October

Average price

$287

Good round-trip deal

$147 or less

Good one-way deal

$167 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. 13% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 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 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 August 4, 2026.
Use the filters below to find and compare flights from Idaho to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Thu 11/26

6:00 am-8:52 am

1 stop3h 52m

Portland

Fri 11/27

5:47 pm-10:26 pm

1 stop3h 39m

$207

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sat 9/26

1:05 pm-4:05 pm

1 stop4h 00m

Portland

Thu 10/1

1:20 pm-6:17 pm

1 stop3h 57m

$207

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Wed 8/26

3:40 pm-10:20 pm

1 stop7h 40m

Portland

Wed 9/2

11:35 am-10:25 pm

2 stops9h 50m

$225

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Fri 9/4

7:28 pm-10:02 pm

1 stop3h 34m

Portland

Sun 9/6

5:54 pm-10:30 pm

1 stop3h 36m

$227

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Tue 9/1

1:32 pm-1:50 pm

Nonstop1h 18m

Portland

Tue 9/1

2:53 pm-5:15 pm

Nonstop1h 22m

$232

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Fri 8/28

4:55 pm-11:15 pm

1 stop7h 20m

Portland

Tue 9/1

2:50 pm-11:20 pm

1 stop7h 30m

$235

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Thu 9/24

10:50 am-2:45 pm

1 stop4h 55m

Portland

Mon 9/28

5:35 am-1:15 pm

1 stop6h 40m

$237

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Thu 10/15

6:45 am-10:45 am

1 stop5h 00m

Portland

Sat 10/17

5:30 am-11:27 am

1 stop4h 57m

$237

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Fri 9/4

12:23 pm-5:14 pm

1 stop5h 51m

Portland

Tue 9/8

9:51 am-3:16 pm

1 stop4h 25m

$237

SpokanePortland

GEG - PDX

GEGPDX

Spokane

Sun 8/30

5:15 am-10:42 am

1 stop5h 27m

Portland

Sun 8/30

8:24 pm-11:59 pm

1 stop3h 35m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 60 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from Idaho to Portland (average of $241). Flying from Idaho to Portland in April is currently the most expensive (average of $348). 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 August 4, 2026.

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 34% versus a flight in the morning.

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 August 4, 2026.

The most flights from USID to PDX are scheduled on a Monday (6 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

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

Airfare is below average for this route at the moment.
Idaho to Portland flights typically cost between $217 and $337 in September.
The cheapest round-trip price found within the last 5 days was $177 on Alaska Airlines (Sep 5-Sep 8).

How far ahead should I book a flight from Idaho to Portland?

The best time to book flights from Idaho to Portland is 68 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 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 August 1, 2026.

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

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 27 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, Southwest, and Alaska Airlines can get you from Idaho to Portland in just under 1h 18m. Your travel time can differ by up to 6h 22m. 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 $51. Delta flights start at $73 while deals on Southwest start at $75 one-way.

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

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

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

    Consider Condor (92%), Alaska Airlines (89%) or Horizon Air (88%) 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 $353, our data indicates the cheapest price to be $168. The most popular route (Boise Air Term. Gowen Fld - Portland), is priced around $206.

  • 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, May is the cheapest month in which you can book a flight from Idaho to Portland (average of $241). Flying from Idaho to Portland in April is currently the most expensive (average of $348). 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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Alternative routes for Idaho to Portland

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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 August 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$82Average$119FlexibilityNo cancel feeOn-time88%
Hawaiian AirlinesCheapest$117Average$248FlexibilityNo cancel feeOn-time85%
DeltaCheapest$118Average$373FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$137Average$356FlexibilityNo cancel feeOn-time75%

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