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$140+ Cheap flights from Portland, ME to Boise (PWM - BOI)

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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap 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 septiembre 11, 2025.

Round-trip from

$284
(Delta)

One-way from

$140
(Delta)

Popular in

July

Cheapest in

August

Average price

$434
From Portland to Boise Air Term. Gowen Fld
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One-way flight from Portland to Boise Air Term. Gowen Fld
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Highest demand for flights based on searches. 5% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 11, 2025.

This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/256:30 amPWM - BOI
2 stops19h 24mDelta
mar. 10/2811:12 amBOI - PWM
2 stops9h 07mDelta
Deal found 9/9$284
This Delta deal was found by Cheapflights users on 9/10. 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.
jue. 10/304:48 pmPWM - BOI
2 stops9h 11mDelta
mar. 11/48:55 amBOI - PWM
2 stops11h 24mDelta
Deal found 9/10$359
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/21:02 pmPWM - BOI
2 stops10h 43mAmerican Airlines
dom. 10/51:07 pmBOI - PWM
1 stop8h 52mAmerican Airlines
Deal found 9/9$412
This United Airlines deal was found by Cheapflights users on 9/9. 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.
mar. 9/306:14 amPWM - BOI
1 stop7h 25mUnited Airlines
lun. 10/612:35 pmBOI - PWM
1 stop7h 09mUnited Airlines
Deal found 9/9$418
This United Airlines deal was found by Cheapflights users on 9/10. 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.
jue. 10/303:20 pmPWM - BOI
1 stop8h 01mUnited Airlines
mar. 11/46:15 amBOI - PWM
1 stop7h 33mUnited Airlines
Deal found 9/10$421
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/21:40 pmPWM - BOI
2 stops10h 43mDelta
dom. 10/57:45 pmBOI - PWM
2 stops12h 51mDelta
Deal found 9/9$446

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 septiembre 11, 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

sáb. 10/25

6:30 am-11:54 pm

2 stops19h 24m

Boise Air Term. Gowen Fld

mar. 10/28

11:12 am-10:19 pm

2 stops9h 07m

$284

PortlandBoise

PWM - BOI

PWMBOI

Portland

vie. 12/12

11:50 am-12:35 am

2 stops14h 45m

Boise Air Term. Gowen Fld

lun. 12/15

7:20 am-10:15 pm

2 stops12h 55m

$378

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 10/2

1:02 pm-9:45 pm

2 stops10h 43m

Boise Air Term. Gowen Fld

dom. 10/5

1:07 pm-11:59 pm

1 stop8h 52m

$412

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 10/30

6:14 am-12:46 pm

1 stop8h 32m

Boise Air Term. Gowen Fld

mar. 11/4

7:00 am-10:54 pm

2 stops13h 54m

$412

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 10/30

3:20 pm-9:21 pm

1 stop8h 01m

Boise Air Term. Gowen Fld

mar. 11/4

6:15 am-3:48 pm

1 stop7h 33m

$421

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 10/2

1:40 pm-10:23 pm

2 stops10h 43m

Boise Air Term. Gowen Fld

dom. 10/5

7:45 pm-10:36 am

2 stops12h 51m

$446

PortlandBoise

PWM - BOI

PWMBOI

Portland

mar. 9/30

5:50 am-5:20 pm

2 stops13h 30m

Boise Air Term. Gowen Fld

lun. 10/6

8:15 pm-11:15 am

2 stops13h 00m

$463

PortlandBoise

PWM - BOI

PWMBOI

Portland

mar. 9/30

6:01 am-12:27 pm

1 stop8h 26m

Boise Air Term. Gowen Fld

lun. 10/6

7:00 am-8:14 pm

2 stops11h 14m

$478

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 10/30

6:00 am-12:29 pm

1 stop8h 29m

$140

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 10/30

7:22 pm-1:44 pm

3 stops20h 22m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 14 results
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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, October is the cheapest month in which you can book a flight from Portland, Maine to Boise (average of $314). Flying from Portland, Maine to Boise in June is currently the most expensive (average of $398). 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 septiembre 11, 2025.

It’s typically best to fly out from Portland, Maine to Boise at noon. Doing so could potentially save you 28% on the flight price compared to flying in the afternoon, 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 septiembre 11, 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
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

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
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

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
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

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 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 14h 45m. Fly via Delta or Southwest 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, American Airlines ($312), United Airlines ($356), and Delta ($365) offers the cheapest pricing from Portland, Maine to Boise. You may be able to fly from Portland, Maine to Boise for 44% 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, October is the cheapest month in which you can book a flight from Portland, Maine to Boise (average of $314). Flying from Portland, Maine to Boise in June is currently the most expensive (average of $398). 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$312Average$434FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$356Average$621FlexibilityNo cancel feeOn-time69%
DeltaCheapest$365Average$552FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$394Average$497FlexibilityNo cancel feeOn-time63%

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