HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$170+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
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.

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 November 6, 2025.

This Delta deal was found by Cheapflights users on 11/6. 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 11/1912:48 pmPWM - BOI
2 stops13h 19mDelta
Wed 12/37:30 amBOI - PWM
2 stops14h 29mDelta
Deal found 11/6$438
This Delta deal was found by Cheapflights users on 11/5. 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 11/1512:48 pmPWM - GEG
2 stops13h 02mDelta
Mon 11/177:38 pmGEG - PWM
2 stops13h 30mDelta
Deal found 11/5$460
This Southwest deal was found by Cheapflights users on 11/5. 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 12/3112:45 pmPWM - BOI
2 stops11h 40mSouthwest
Sun 1/48:45 pmBOI - PWM
2 stops12h 25mSouthwest
Deal found 11/5$463
This Delta deal was found by Cheapflights users on 11/5. 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 11/201:25 pmPWM - BOI
2 stops12h 42mDelta
Mon 11/249:00 amBOI - PWM
2 stops12h 54mDelta
Deal found 11/5$519
This Delta deal was found by Cheapflights users on 11/6. 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 11/156:00 amPWM - JAC
2 stops13h 10mDelta
Tue 11/187:00 amJAC - PWM
2 stops13h 19mDelta
Deal found 11/6$559
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 12/137:11 amPWM - IDA
2 stops17h 25mAmerican Airlines
Mon 1/127:20 amIDA - PWM
2 stops13h 34mAmerican Airlines
Deal found 11/4$575
This American Airlines deal was found by Cheapflights users on 11/6. 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.
Wed 11/195:37 pmPWM - BOI
1 stop21h 26mAmerican Airlines
Wed 12/36:44 amBOI - PWM
2 stops14h 53mAmerican Airlines
Deal found 11/6$599
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/153:20 pmPWM - JAC
1 stop7h 17mUnited Airlines
Tue 11/187:00 amJAC - PWM
1 stop6h 48mUnited Airlines
Deal found 11/4$604
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/203:20 pmPWM - JAC
1 stop7h 17mUnited Airlines
Mon 11/244:17 pmJAC - PWM
1 stop21h 31mUnited Airlines
Deal found 11/4$648
This United Airlines deal was found by Cheapflights users on 11/6. 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 11/217:22 pmPWM - IDA
2 stops16h 26mUnited Airlines
Tue 11/255:00 amIDA - PWM
1 stop8h 48mUnited Airlines
Deal found 11/6$674
This Delta deal was found by Cheapflights users on 11/5. 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 12/315:45 amPWM - BOI
1 stop9h 00mDelta
Sun 1/47:30 amBOI - PWM
2 stops13h 13mDelta
Deal found 11/5$708
This American Airlines deal was found by Cheapflights users on 11/4. 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 11/205:21 pmPWM - JAC
2 stops20h 53mAmerican Airlines
Mon 11/241:11 pmJAC - PWM
3 stops20h 35mAmerican Airlines
Deal found 11/4$757

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 November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$300
(Delta)

One-way from

$170
(Delta)

Popular in

July

Cheapest in

August

Average price

$677
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. 3% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 6, 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 2/25

12:15 pm-9:58 pm

2 stops11h 43m

Boise Air Term. Gowen Fld

Mon 3/9

7:30 pm-11:57 am

2 stops14h 27m

$300

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 2/3

5:30 am-3:57 pm

2 stops12h 27m

Boise Air Term. Gowen Fld

Wed 2/25

8:50 am-11:04 pm

2 stops12h 14m

$300

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 1/27

5:30 am-6:28 pm

2 stops14h 58m

Boise Air Term. Gowen Fld

Tue 2/24

8:50 am-11:04 pm

2 stops12h 14m

$300

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Fri 2/20

2:35 pm-12:06 am

2 stops12h 31m

Spokane

Thu 2/26

9:20 am-12:20 am

2 stops12h 00m

$327

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 1/24

5:30 am-6:28 pm

2 stops14h 58m

Boise Air Term. Gowen Fld

Tue 2/24

8:50 am-12:20 am

2 stops13h 30m

$340

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 2/24

12:15 pm-9:58 pm

2 stops11h 43m

Boise Air Term. Gowen Fld

Tue 3/10

5:40 am-9:59 pm

2 stops14h 19m

$349

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 1/20

5:30 am-12:31 pm

1 stop9h 01m

Boise Air Term. Gowen Fld

Tue 2/24

1:41 pm-11:04 pm

1 stop7h 23m

$393

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Fri 2/20

4:11 pm-9:52 pm

1 stop8h 41m

Spokane

Thu 2/26

7:00 am-11:20 pm

2 stops13h 20m

$447

PortlandJackson

PWM - JAC

PWMJAC

Portland

Wed 2/25

5:31 am-4:24 pm

2 stops12h 53m

Jackson Hole

Wed 3/4

2:35 pm-1:45 pm

2 stops21h 10m

$458

PortlandJackson

PWM - JAC

PWMJAC

Portland

Sun 3/1

5:57 pm-1:25 pm

2 stops21h 28m

Jackson Hole

Tue 3/10

2:28 pm-1:51 pm

2 stops21h 23m

$516

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 36 results
1
2
3
4

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, April is the cheapest month in which you can book a flight from Portland, Maine to Idaho (average of $204). Flying from Portland, Maine to Idaho in June is currently the most expensive (average of $320). 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 November 6, 2025.

One of the essential ways to save on airfare from Portland, Maine to Idaho is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 51% on airfare.

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 November 6, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Portland to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,001 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,007 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,040 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Portland, Maine to Idaho?

    There are many flights that can get you from Portland, Maine to Idaho in 8h 41m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. The distance between Portland, Maine and Idaho is about 2261 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $170. However, be on the lookout for offers from United Airlines and American 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 - Spokane, Portland - Jackson Hole and Portland - Boise Air Term. Gowen Fld.

  • 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, April is the cheapest month in which you can book a flight from Portland, Maine to Idaho (average of $204). Flying from Portland, Maine to Idaho in June is currently the most expensive (average of $320). 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 Fort Lauderdale flights
Boston to Miami flights
Boston to Orlando flights
Boston to Tampa flights
Boston to Los Angeles flights
Boston to Las Vegas flights
Boston to Atlanta flights
Boston to Dallas/Fort Worth flights
Boston to West Palm Beach flights
Boston to Fort Myers flights
Boston to Denver flights
Boston to O'Hare Intl flights
Boston to San Francisco flights
Boston to LaGuardia flights
Boston to Baltimore flights
Boston to Seattle flights
Boston to Sky Harbor Intl flights
Boston to Reagan-National flights
Boston to Hobby flights
Boston to Philadelphia flights
Boston to Newark flights
Boston to New Orleans flights
Boston to Salt Lake City flights
Boston to Austin flights
Boston to Raleigh flights
Boston to John F Kennedy Intl flights
Boston to Charlotte flights
Boston to Sarasota flights
Boston to George Bush Intcntl flights
Boston to Dulles Intl flights
Boston to Nashville flights
Boston to San Diego flights
Boston to Charleston flights
Boston to Honolulu flights
Boston to Savannah flights
Boston to Cleveland flights
Boston to Detroit flights
Boston to Ontario flights
Boston to Jacksonville flights
Boston to Pittsburgh flights
Boston to Key West flights
Boston to Cincinnati flights
Boston to Indianapolis flights
Boston to Minneapolis flights
Boston to Love Field flights
Boston to San Antonio flights
Boston to Columbus flights
Boston to Richmond flights
Boston to Midway flights
Boston to Milwaukee 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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$312Average$451FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$356Average$463FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$356Average$582FlexibilityNo cancel feeOn-time69%
DeltaCheapest$365Average$537FlexibilityNo cancel feeOn-timeN/A

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.