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$474+ Cheap flights from Portland, ME to Boise (PWM - BOI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Portland to Boise

Cheapest flights from Portland to Boise
Explore the most affordable flight options available from Portland to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Southwest deal was found by Cheapflights users on 12/10. 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.
Wed 12/245:30 amPWM - BOI
2 stops13h 20mSouthwest
Wed 12/316:10 amBOI - PWM
2 stops14h 05mSouthwest
Deal found 12/10$604
This Delta deal was found by Cheapflights users on 12/10. 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.
Wed 12/245:45 amPWM - BOI
1 stop9h 00mDelta
Wed 12/315:30 amBOI - PWM
2 stops9h 02mDelta
Deal found 12/10$808
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Wed 12/246:00 amPWM - BOI
3 stops11h 25mAmerican Airlines
Wed 12/311:35 pmBOI - PWM
2 stops20h 14mAmerican Airlines
Deal found 12/10$1,143
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Wed 12/249:30 amPWM - BOI
1 stop15h 29mUnited Airlines
Wed 12/3112:20 pmBOI - PWM
1 stop23h 54mUnited Airlines
Deal found 12/10$1,822

Find flight deals from Portland to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Boise (BOI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$474
(Southwest)

Popular in

July

Cheapest in

August

Average price

$712
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.
Search Deals
From Portland to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($17 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 December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Boise 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 December 12, 2025.
Use the filters below to find and compare flights from Portland to Boise that are best for you.

Fly from

Portland

Fly to

Boise

Route

Depart

Return

Price

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 1/16

5:35 am-10:55 pm

2 stops19h 20m

Boise Air Term. Gowen Fld

Mon 1/19

7:00 pm-12:10 pm

2 stops15h 10m

$474

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 1/17

8:40 am-7:13 pm

2 stops12h 33m

Boise Air Term. Gowen Fld

Tue 1/20

10:48 am-9:01 am

2 stops20h 13m

$482

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 12/24

5:30 am-4:50 pm

2 stops13h 20m

Boise Air Term. Gowen Fld

Wed 12/31

6:10 am-10:15 pm

2 stops14h 05m

$604

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 1/16

4:10 pm-12:39 pm

1 stop22h 29m

Boise Air Term. Gowen Fld

Mon 1/19

5:16 pm-2:39 pm

2 stops19h 23m

$641

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 12/24

5:45 am-12:45 pm

1 stop9h 00m

Boise Air Term. Gowen Fld

Wed 12/31

5:30 am-4:32 pm

2 stops9h 02m

$808

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 12/24

6:00 am-3:25 pm

3 stops11h 25m

Boise Air Term. Gowen Fld

Wed 12/31

1:35 pm-11:49 am

2 stops20h 14m

$1,143

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from Portland to Boise

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Boise in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Boise flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Boise flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland, Maine-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Boise flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Boise flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise 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 Boise

What is the cheapest month to book a flight from Portland, Maine to Boise?

Currently, April is the cheapest month in which you can book a flight from Portland, Maine to Boise (average of $204). Flying from Portland, Maine to Boise 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 BOI?

Find hourly flight availability from Portland to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from Portland, Maine to Boise at noon. Doing so could potentially save you 59% on the flight price compared to flying in the evening, which is usually more expensive.

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated December 12, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Portland to Boise by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,095 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,050 reviews
Southwest
7.9
Good
4,253 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Portland to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    There are many flights that can get you from Portland, Maine to Boise in 12h 33m. Fly via Southwest or United Airlines to get the fastest option. There are 2265 mi between Portland, Maine and Boise. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Portland, Maine to Boise round-trip?

    According to our current data, United Airlines ($311), American Airlines ($312), and Delta ($339) offers the cheapest pricing from Portland, Maine to Boise. You may be able to fly from Portland, Maine to Boise for 46% less than the average price by searching for these airlines.

  • Can I find deals for flights from Portland to Boise that include hotel bookings?

    Yes. In addition to deals on Portland to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Boise?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Boise.

  • Can I find deals for business class flights from Portland to Boise?

    Yes. Cheapflights offers flight deals from Portland to Boise 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 Boise?

    Currently, April is the cheapest month in which you can book a flight from Portland, Maine to Boise (average of $204). Flying from Portland, Maine to Boise 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

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top 4 airlines flying from Portland to Boise

Discover the top 4 airlines that operate flights from Portland to Boise. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$312Average$451FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$356Average$449FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$356Average$582FlexibilityNo cancel feeOn-time69%
DeltaCheapest$365Average$496FlexibilityNo cancel feeOn-timeN/A

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