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Idaho

$43+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — BOI
May 31 — Jun 71
Sun 5/31
Sun 6/7
1 adult, Economy
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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 May 1, 2026.

This Booking.com deal was found by Cheapflights users on 4/27. 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 7/1012:20 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Fri 7/173:50 pm
IDA
-
PDX
Nonstop1h 36m
Allegiant Air
Deal found 4/27$81
This Gotogate deal was found by Cheapflights users on 4/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 6/86:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 4/29$92
This Booking.com deal was found by Cheapflights users on 4/27. 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 6/123:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 6/156:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 4/27$99
This Booking.com deal was found by Cheapflights users on 4/26. 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 6/193:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 6/296:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 4/26$107
This Gotogate deal was found by Cheapflights users on 4/27. 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.
Fri 6/193:09 pm
PDX
-
IDA
Nonstop1h 40m
Allegiant Air
Mon 6/226:39 pm
IDA
-
PDX
Nonstop1h 39m
Allegiant Air
Deal found 4/27$119
This Gotogate deal was found by Cheapflights users on 4/27. 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.
Fri 5/223:10 pm
PDX
-
IDA
Nonstop1h 39m
Allegiant Air
Mon 5/256:39 pm
IDA
-
PDX
Nonstop1h 41m
Allegiant Air
Deal found 4/27$136
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/2710:30 am
PDX
-
IDA
Nonstop1h 47m
Alaska Airlines
Wed 6/34:03 pm
IDA
-
PDX
Nonstop1h 47m
Alaska Airlines
Deal found 4/29$157
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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 5/169:35 pm
PDX
-
BOI
Nonstop1h 23m
Alaska Airlines
Wed 5/209:00 am
BOI
-
PDX
Nonstop1h 23m
Alaska Airlines
Deal found 4/25$177
This Delta deal was found by Cheapflights users on 4/25. 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.
Sat 5/235:30 am
PDX
-
BOI
1 stop3h 24m
Delta
Tue 5/266:00 am
BOI
-
PDX
1 stop3h 52m
Delta
Deal found 4/25$187
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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 5/2310:30 am
PDX
-
GEG
Nonstop1h 22m
Alaska Airlines
Sat 5/3012:36 pm
GEG
-
PDX
Nonstop1h 13m
Alaska Airlines
Deal found 4/28$197
This Delta deal was found by Cheapflights users on 4/27. 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.
Sat 5/305:01 pm
PDX
-
BOI
1 stop5h 03m
Delta
Mon 6/16:00 pm
BOI
-
PDX
1 stop4h 16m
Delta
Deal found 4/27$197
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:35 am
PDX
-
BOI
1 stop7h 09m
United Airlines
Fri 5/297:05 pm
BOI
-
PDX
1 stop6h 45m
United Airlines
Deal found 4/30$202

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 May 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$81
(Booking.com)

One-way from

$43
(eDestinos)

Popular in

January

Cheapest in

February

Average price

$277

Good round-trip deal

$92 or less

Good one-way deal

$183 or less
Provider with most accurate pricing for Portland-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Boise Air Term. Gowen Fld flights.
Search Deals
From Portland to Idaho
Search Deals
One-way flight from Portland to Idaho
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. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Portland to Idaho.
Search Deals
Price to beat on a one-way flight from Portland to Idaho.
Search Deals

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 May 1, 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 5/30

5:01 pm-11:04 pm

1 stop5h 03m

Boise Air Term. Gowen Fld

Mon 6/1

6:00 pm-9:16 pm

1 stop4h 16m

$197

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Tue 5/26

5:51 pm-11:59 pm

1 stop6h 08m

Spokane

Wed 6/3

4:15 pm-7:24 pm

1 stop3h 09m

$207

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Wed 5/27

5:51 pm-9:13 pm

1 stop3h 22m

Spokane

Wed 6/3

5:39 pm-11:53 pm

1 stop6h 14m

$207

PortlandBoise

PDX - BOI

PDXBOI

Portland

Sat 5/23

5:01 pm-9:44 pm

1 stop3h 43m

Boise Air Term. Gowen Fld

Sat 5/30

3:14 pm-7:26 pm

1 stop5h 12m

$217

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Sun 5/24

5:51 pm-9:13 pm

1 stop3h 22m

Spokane

Sun 5/31

6:10 am-10:40 am

1 stop4h 30m

$227

PortlandBoise

PDX - BOI

PDXBOI

Portland

Mon 5/25

5:30 am-11:35 am

1 stop5h 05m

Boise Air Term. Gowen Fld

Mon 6/1

3:14 pm-7:24 pm

1 stop5h 10m

$227

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Sat 5/23

9:44 am-1:04 pm

1 stop3h 20m

Spokane

Wed 5/27

5:00 am-8:02 am

1 stop3h 02m

$237

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Sat 5/23

5:30 am-10:12 am

1 stop4h 42m

Spokane

Sun 5/24

4:15 pm-9:18 pm

1 stop5h 03m

$247

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Thu 6/4

5:30 am-10:10 am

1 stop4h 40m

Spokane

Mon 6/8

5:37 pm-11:54 pm

1 stop6h 17m

$247

PortlandBoise

PDX - BOI

PDXBOI

Portland

Fri 5/22

3:30 pm-10:13 pm

1 stop5h 43m

Boise Air Term. Gowen Fld

Mon 5/25

12:15 pm-5:11 pm

1 stop5h 56m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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

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

The best time to book flights from Portland to Idaho is 65 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 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 $131). 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 May 1, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 28% 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 April 25, 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.

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 May 1, 2026.

The most flights from PDX to USID are scheduled on a Monday (6 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

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

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 May 1, 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.
Alaska Airlines
7.9
Good
12,318 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Alaska Airlines
7.9
Good
12,318 reviews
Alaska Airlines
7.9
Good
12,318 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Delta
7.9
Good
8,464 reviews
Alaska Airlines
7.9
Good
12,318 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Hawaiian Airlines
7.8
Good
2,837 reviews
Alaska Airlines
7.9
Good
12,318 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well
Allegiant Air
7.3
Good
707 reviews
Alaska Airlines
7.9
Good
12,318 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Eugene,Mar 2026

MFR - SEA

Alaska Airlines is is always good. There where few choices of what to drink, and no food. No blankets, no pillows, and you h ats ok. I just had open heart surgery And i could have used something. But the flight and the crew where exelent. So all is well

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 4 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 Delta and Alaska Airlines fly from Portland to Idaho in about 3h 20m. The time it takes to get you to your destination can typically vary by up to 1h 43m. 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 Allegiant Air ($48), Southwest ($75), and Hawaiian Airlines ($78).

  • 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 - Jackson Hole as they are the most popular.

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

    Consider Horizon Air (97%), British Airways (95%) or Hawaiian Airlines (94%) 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 $273, our data indicates the cheapest price to be $138. The most popular route (Portland - Boise Air Term. Gowen Fld), is priced around $187.

  • 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 $131). 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.
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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 May 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$44Average$97FlexibilityNo cancel feeOn-time88%
Hawaiian AirlinesCheapest$117Average$331FlexibilityNo cancel feeOn-time85%
DeltaCheapest$136Average$362FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$137Average$382FlexibilityNo cancel feeOn-time75%

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