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$162+ Cheap flights from Portland, ME (PWM) 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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$313
(Delta)

One-way from

$162
(Southwest)

Popular in

July

Cheapest in

September

Average price

$557
Provider with most accurate pricing for Portland-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Portland-Boise Air Term. Gowen Fld flights.
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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. 10% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 29, 2025.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/96:00 amPWM - BOI
1 stop8h 42mDelta
Wed 7/161:52 pmBOI - PWM
1 stop8h 39mDelta
Deal found 4/29$313
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amPWM - BOI
1 stop8h 36mAmerican Airlines
Mon 9/87:30 amBOI - PWM
1 stop8h 00mAmerican Airlines
Deal found 4/29$351
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/75:30 amPWM - GEG
1 stop8h 59mDelta
Wed 6/1812:29 pmGEG - PWM
1 stop8h 57mDelta
Deal found 4/29$354
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/183:20 pmPWM - BOI
2 stops10h 45mSouthwest
Mon 9/225:00 amBOI - PWM
2 stops10h 05mSouthwest
Deal found 4/29$389
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/812:14 pmPWM - GEG
2 stops13h 22mAmerican Airlines
Wed 8/136:00 amGEG - PWM
1 stop8h 46mAmerican Airlines
Deal found 4/29$425
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/154:00 pmPWM - GEG
2 stops11h 10mSouthwest
Thu 6/197:15 amGEG - PWM
2 stops13h 50mSouthwest
Deal found 4/29$433
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/135:30 amPWM - GEG
2 stops12h 11mUnited Airlines
Tue 5/205:29 amGEG - PWM
2 stops10h 42mUnited Airlines
Deal found 4/29$452
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/16:00 amPWM - JAC
1 stop8h 24mAmerican Airlines
Tue 7/227:00 amJAC - PWM
2 stops13h 59mAmerican Airlines
Deal found 4/29$465
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:23 pmPWM - BOI
1 stop19h 08mUnited Airlines
Wed 9/2412:27 pmBOI - PWM
1 stop7h 32mUnited Airlines
Deal found 4/29$515
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1512:40 pmPWM - GEG
2 stops31h 27mMultiple Airlines
Thu 6/191:44 pmGEG - PWM
3 stops43h 13mMultiple Airlines
Deal found 4/29$606
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/236:00 amPWM - JAC
3 stops15h 57mUnited Airlines
Tue 7/298:00 amJAC - PWM
2 stops13h 14mUnited Airlines
Deal found 4/29$620
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/126:20 pmPWM - IDA
2 stops17h 24mUnited Airlines
Sun 7/205:00 amIDA - PWM
2 stops26h 24mUnited Airlines
Deal found 4/29$633

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 April 29, 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

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 7/9

6:00 am-12:42 pm

1 stop8h 42m

Boise Air Term. Gowen Fld

Wed 7/16

1:52 pm-12:31 am

1 stop8h 39m

$313

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 9/4

6:00 am-12:36 pm

1 stop8h 36m

Boise Air Term. Gowen Fld

Mon 9/8

7:30 am-5:30 pm

1 stop8h 00m

$351

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Sat 6/7

5:30 am-11:29 am

1 stop8h 59m

Spokane

Wed 6/18

12:29 pm-12:26 am

1 stop8h 57m

$354

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 9/18

3:20 pm-12:05 am

2 stops10h 45m

Boise Air Term. Gowen Fld

Mon 9/22

5:00 am-5:05 pm

2 stops10h 05m

$389

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Fri 8/8

12:14 pm-10:36 pm

2 stops13h 22m

Spokane

Wed 8/13

6:00 am-5:46 pm

1 stop8h 46m

$425

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Sun 6/15

4:00 pm-12:10 am

2 stops11h 10m

Spokane

Thu 6/19

7:15 am-12:05 am

2 stops13h 50m

$433

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Tue 5/13

5:30 am-2:41 pm

2 stops12h 11m

Spokane

Tue 5/20

5:29 am-7:11 pm

2 stops10h 42m

$452

PortlandJackson

PWM - JAC

PWMJAC

Portland

Tue 7/1

6:00 am-12:24 pm

1 stop8h 24m

Jackson Hole

Tue 7/22

7:00 am-10:59 pm

2 stops13h 59m

$465

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 9/11

6:23 pm-11:31 am

1 stop19h 08m

Boise Air Term. Gowen Fld

Wed 9/24

12:27 pm-9:59 pm

1 stop7h 32m

$515

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Sun 6/15

12:40 pm-5:07 pm

2 stops31h 27m

Spokane

Thu 6/19

1:44 pm-11:57 am

3 stops43h 13m

$606

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 20 results
1
2

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, Maine to Idaho?

Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Idaho (average of $314). Flying from Portland, Maine to Idaho in June is currently the most expensive (average of $406). 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 PWM 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 April 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland, Maine to Idaho as you normally would.

Rainfall in Idaho by month

Plan your trip to Idaho by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.

Temperature in Idaho by month

Plan your trip to Idaho by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 April 29, 2025.
Read through reviews of airlines operating flights from Portland to Idaho, such as Southwest, Delta and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,929 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,295 reviews

Comfort

8.0

Food

7.1

Crew

8.6

Overall

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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?

    If you book a flight to Idaho from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $162. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Portland, Maine to Idaho for a low price.

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

    The most popular flight routes from Portland, Maine to Idaho are Portland - Boise Air Term. Gowen Fld, Portland - Jackson Hole and Portland - Spokane.

  • 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, Maine to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Idaho (average of $314). Flying from Portland, Maine to Idaho in June is currently the most expensive (average of $406). 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

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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$345Average$585FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$356Average$675FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$375Average$556FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$419Average$546FlexibilityNo cancel feeOn-time63%

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