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$172+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
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 julio 30, 2025.

Round-trip from

$333
(Delta)

One-way from

$172
(Southwest)

Popular in

July

Cheapest in

September

Average price

$798
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. 6% potential increase in price ($41 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 July 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 julio 30, 2025.

This Delta deal was found by Cheapflights users on 7/28. 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. 8/306:00 amPWM - BOI
1 stop8h 24mDelta
mié. 9/31:30 pmBOI - PWM
1 stop8h 33mDelta
Deal found 7/28$333
This American Airlines deal was found by Cheapflights users on 7/29. 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.
vie. 8/2912:14 pmPWM - BOI
2 stops13h 17mAmerican Airlines
mar. 9/91:07 pmBOI - PWM
1 stop7h 36mAmerican Airlines
Deal found 7/29$368
This United Airlines deal was found by Cheapflights users on 7/29. 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.
vie. 11/73:20 pmPWM - BOI
1 stop8h 01mUnited Airlines
mar. 11/116:15 amBOI - PWM
1 stop7h 33mUnited Airlines
Deal found 7/29$463
This Southwest deal was found by Cheapflights users on 7/29. 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.
jue. 8/142:00 pmPWM - BOI
2 stops12h 25mSouthwest
dom. 8/176:30 amBOI - PWM
2 stops13h 55mSouthwest
Deal found 7/29$584
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/182:02 pmPWM - BOI
2 stops12h 06mAlaska Airlines
jue. 9/258:10 amBOI - PWM
2 stops13h 35mAlaska Airlines
Deal found 7/30$802
This Mytrip deal was found by Cheapflights users on 7/29. 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.
jue. 8/148:52 pmPWM - BOI
2 stops22h 19mMultiple Airlines
dom. 8/176:06 pmBOI - PWM
3 stops21h 19mMultiple Airlines
Deal found 7/29$838

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 julio 30, 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. 8/30

6:00 am-12:24 pm

1 stop8h 24m

Boise Air Term. Gowen Fld

mié. 9/3

1:30 pm-12:03 am

1 stop8h 33m

$333

PortlandBoise

PWM - BOI

PWMBOI

Portland

vie. 8/29

12:14 pm-11:31 pm

2 stops13h 17m

Boise Air Term. Gowen Fld

mar. 9/9

1:07 pm-10:43 pm

1 stop7h 36m

$368

PortlandBoise

PWM - BOI

PWMBOI

Portland

vie. 11/7

3:20 pm-9:21 pm

1 stop8h 01m

Boise Air Term. Gowen Fld

mar. 11/11

6:15 am-3:48 pm

1 stop7h 33m

$463

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 8/14

2:00 pm-12:25 am

2 stops12h 25m

Boise Air Term. Gowen Fld

dom. 8/17

6:30 am-10:25 pm

2 stops13h 55m

$584

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 9/18

2:02 pm-12:08 am

2 stops12h 06m

Boise Air Term. Gowen Fld

jue. 9/25

8:10 am-11:45 pm

2 stops13h 35m

$802

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 8/14

8:52 pm-5:11 pm

2 stops22h 19m

Boise Air Term. Gowen Fld

dom. 8/17

6:06 pm-5:25 pm

3 stops21h 19m

$838

PortlandBoise

PWM - BOI

PWMBOI

Portland

mié. 12/3

12:45 pm-11:10 pm

2 stops12h 25m

$172

PortlandBoise

PWM - BOI

PWMBOI

Portland

jue. 9/18

1:35 pm-10:23 pm

1 stop10h 48m

$180

PortlandBoise

PWM - BOI

PWMBOI

Portland

sáb. 8/16

6:10 am-11:43 am

1 stop7h 33m

$314

PortlandBoise

PWM - BOI

PWMBOI

Portland

sáb. 8/16

12:38 pm-5:11 pm

3 stops30h 33m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 11 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 julio 30, 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 julio 30, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    According to our current data, Delta ($333), American Airlines ($368), and United Airlines ($463) offers the cheapest pricing from Portland, Maine to Boise. You may be able to fly from Portland, Maine to Boise for 41% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $172 on Southwest. Other airlines that offer cheap prices include Delta from $180 and United Airlines from $314 one-way.

  • 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
Meridian
Nampa
Ontario
McCall
Caldwell

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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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$312Average$452FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$356Average$637FlexibilityNo cancel feeOn-time69%
DeltaCheapest$387Average$575FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$394Average$467FlexibilityNo cancel feeOn-time63%

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