HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$215+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2025.

Round-trip from

$297
(American Airlines)

One-way from

$215
(Delta)

Popular in

July

Cheapest in

September

Average price

$557
From Portland to Idaho
Search Deals
One-way flight from Portland to Idaho
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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 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 32mAmerican Airlines
Mon 9/86:59 amBOI - PWM
1 stop8h 46mAmerican Airlines
Deal found 6/11$297
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/112:39 pmPWM - JAC
1 stop8h 41mAmerican Airlines
Tue 7/227:00 amJAC - PWM
2 stops11h 24mAmerican Airlines
Deal found 6/12$344
This Southwest deal was found by Cheapflights users on 6/11. 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.
Thu 9/1810:35 amPWM - BOI
1 stop7h 15mSouthwest
Mon 9/2210:25 amBOI - PWM
2 stops10h 45mSouthwest
Deal found 6/11$364
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:00 amPWM - GEG
1 stop9h 44mAmerican Airlines
Fri 9/261:30 pmGEG - PWM
1 stop7h 39mAmerican Airlines
Deal found 6/10$371
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/278:00 amPWM - BOI
2 stops12h 47mUnited Airlines
Sat 10/48:20 amBOI - PWM
2 stops13h 00mUnited Airlines
Deal found 6/11$425
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:00 amPWM - IDA
1 stop8h 09mAmerican Airlines
Wed 9/2412:43 pmIDA - PWM
1 stop8h 00mAmerican Airlines
Deal found 6/11$435
This Delta deal was found by Cheapflights users on 6/11. 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 9/1812:30 pmPWM - BOI
2 stops13h 47mDelta
Mon 9/2211:30 pmBOI - PWM
2 stops12h 51mDelta
Deal found 6/11$437
This Southwest deal was found by Cheapflights users on 6/10. 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 9/215:35 amPWM - GEG
2 stops9h 50mSouthwest
Fri 9/267:30 amGEG - PWM
2 stops12h 40mSouthwest
Deal found 6/10$443
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/273:37 pmPWM - IDA
1 stop7h 22mUnited Airlines
Tue 7/110:45 amIDA - PWM
2 stops11h 14mUnited Airlines
Deal found 6/11$479
This Delta deal was found by Cheapflights users on 6/10. 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 8/86:00 amPWM - GEG
1 stop8h 11mDelta
Wed 8/1312:45 pmGEG - PWM
1 stop8h 18mDelta
Deal found 6/10$518
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:14 amPWM - JAC
3 stops16h 35mUnited Airlines
Sat 10/44:18 pmJAC - PWM
2 stops15h 41mUnited Airlines
Deal found 6/9$519
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/86:01 amPWM - GEG
2 stops11h 46mUnited Airlines
Tue 7/156:25 pmGEG - PWM
2 stops12h 42mUnited Airlines
Deal found 6/10$524

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 June 12, 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

Thu 9/4

6:00 am-12:32 pm

1 stop8h 32m

Boise Air Term. Gowen Fld

Mon 9/8

6:59 am-5:45 pm

1 stop8h 46m

$297

PortlandJackson

PWM - JAC

PWMJAC

Portland

Tue 7/1

12:39 pm-7:20 pm

1 stop8h 41m

Jackson Hole

Tue 7/22

7:00 am-8:24 pm

2 stops11h 24m

$344

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 9/18

10:35 am-3:50 pm

1 stop7h 15m

Boise Air Term. Gowen Fld

Mon 9/22

10:25 am-11:10 pm

2 stops10h 45m

$364

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Sun 9/21

6:00 am-12:44 pm

1 stop9h 44m

Spokane

Fri 9/26

1:30 pm-12:09 am

1 stop7h 39m

$371

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 9/27

8:00 am-6:47 pm

2 stops12h 47m

Boise Air Term. Gowen Fld

Sat 10/4

8:20 am-11:20 pm

2 stops13h 00m

$425

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Thu 9/18

6:00 am-12:09 pm

1 stop8h 09m

Idaho Falls Fanning Field

Wed 9/24

12:43 pm-10:43 pm

1 stop8h 00m

$435

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 9/18

12:30 pm-12:17 am

2 stops13h 47m

Boise Air Term. Gowen Fld

Mon 9/22

11:30 pm-2:21 pm

2 stops12h 51m

$437

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Sun 9/21

5:35 am-12:25 pm

2 stops9h 50m

Spokane

Fri 9/26

7:30 am-11:10 pm

2 stops12h 40m

$443

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Fri 6/27

3:37 pm-8:59 pm

1 stop7h 22m

Idaho Falls Fanning Field

Tue 7/1

10:45 am-11:59 pm

2 stops11h 14m

$479

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Fri 8/8

6:00 am-11:11 am

1 stop8h 11m

Spokane

Wed 8/13

12:45 pm-12:03 am

1 stop8h 18m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 $395). 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 June 12, 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 June 12, 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
4,287 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,946 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.1

Entertainment

7.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 Delta, with whom users have recently found tickets for as low as $215. However, be on the lookout for offers from American Airlines 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 - Jackson Hole, Portland - Boise Air Term. Gowen Fld 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 $395). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Boston to O'Hare Intl flights
Boston to Los Angeles flights
Boston to Seattle flights
Boston to Las Vegas flights
Boston to Orlando flights
Boston to Denver flights
Boston to San Francisco flights
Boston to Dallas/Fort Worth flights
Boston to Reagan-National flights
Boston to Miami flights
Boston to Baltimore flights
Boston to Fort Lauderdale flights
Boston to Newark flights
Boston to Philadelphia flights
Boston to Dulles Intl flights
Boston to Atlanta flights
Boston to LaGuardia flights
Boston to Hobby flights
Boston to Charlotte flights
Boston to Nashville flights
Boston to Minneapolis flights
Boston to San Diego flights
Boston to Tampa flights
Boston to Raleigh flights
Boston to John F Kennedy Intl flights
Boston to Portland flights
Boston to George Bush Intcntl flights
Boston to Austin flights
Boston to Midway flights
Boston to Sky Harbor Intl flights
Boston to Honolulu flights
Boston to Salt Lake City flights
Boston to Detroit flights
Boston to Charleston flights
Boston to Cleveland flights
Boston to New Orleans flights
Boston to Pittsburgh flights
Boston to Bozeman flights
Boston to Cincinnati flights
Boston to Ontario flights
Boston to Love Field flights
Boston to West Palm Beach flights
Boston to Milwaukee flights
Boston to Myrtle Beach flights
Boston to Indianapolis flights
Boston to Santa Ana flights
Boston to Fort Myers flights
Portland to Denver flights
Boston to San Antonio flights
Boston to Burbank flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$356Average$809FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$375Average$476FlexibilityNo cancel feeOn-time71%
DeltaCheapest$387Average$577FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$409Average$497FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.