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$197+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
Jun 1 — Jun 81
Mon 6/1
Mon 6/8
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 May 2, 2026.

This Delta deal was found by Cheapflights users on 4/27. 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 5/276:00 am
PWM
-
BOI
1 stop8h 43m
Delta
Tue 6/211:39 pm
BOI
-
PWM
2 stops10h 16m
Delta
Deal found 4/27$388
This American Airlines deal was found by Cheapflights users on 5/1. 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 9/157:13 am
PWM
-
BOI
1 stop7h 18m
American Airlines
Sat 9/191:18 pm
BOI
-
PWM
1 stop8h 55m
American Airlines
Deal found 5/1$425
This Delta deal was found by Cheapflights users on 4/27. 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.
Tue 5/261:18 pm
PWM
-
BOI
2 stops11h 10m
Delta
Tue 6/211:39 pm
BOI
-
PWM
2 stops10h 16m
Delta
Deal found 4/27$431
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:37 am
PWM
-
BOI
2 stops12h 52m
American Airlines
Sun 5/313:11 pm
BOI
-
PWM
1 stop7h 24m
American Airlines
Deal found 4/30$438
This American Airlines deal was found by Cheapflights users on 4/27. 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 5/278:05 am
PWM
-
BOI
2 stops11h 04m
American Airlines
Sun 5/313:11 pm
BOI
-
PWM
1 stop7h 24m
American Airlines
Deal found 4/27$445
This Southwest deal was found by Cheapflights users on 5/1. 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.
Tue 5/261:00 pm
PWM
-
BOI
2 stops12h 30m
Southwest
Tue 6/97:10 am
BOI
-
PWM
1 stop12h 20m
Southwest
Deal found 5/1$460
This Delta deal was found by Cheapflights users on 4/27. 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 6/1212:40 pm
PWM
-
BOI
2 stops11h 25m
Delta
Sun 6/1411:45 pm
BOI
-
PWM
2 stops12h 34m
Delta
Deal found 4/27$477
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/12:50 pm
PWM
-
BOI
2 stops12h 10m
Southwest
Fri 6/58:45 am
BOI
-
PWM
1 stop11h 25m
Southwest
Deal found 4/28$478

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 May 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$388
(Delta)

One-way from

$197
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$507
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.
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From Portland to Boise Air Term. Gowen Fld
Search Deals
One-way flight from Portland to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 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 May 2026
Search Deals

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 May 2, 2026.
Use the filters below to find and compare flights from Portland to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 5/23

6:28 am-2:20 pm

1 stop9h 52m

Boise Air Term. Gowen Fld

Sun 5/31

3:11 pm-12:35 am

1 stop7h 24m

$448

PortlandBoise

PWM - BOI

PWMBOI

Portland

Mon 6/1

2:50 pm-1:00 am

2 stops12h 10m

Boise Air Term. Gowen Fld

Fri 6/5

8:45 am-10:10 pm

1 stop11h 25m

$478

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 7/17

7:40 am-5:15 pm

1 stop11h 35m

Boise Air Term. Gowen Fld

Tue 7/21

7:10 am-9:30 pm

1 stop12h 20m

$478
Quickest round-trip

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/1

6:00 am-11:25 am

1 stop7h 25m

Boise Air Term. Gowen Fld

Wed 9/2

12:23 pm-10:01 pm

1 stop7h 38m

$493

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 5/23

2:38 pm-11:46 pm

2 stops11h 08m

Boise Air Term. Gowen Fld

Sun 5/31

11:39 pm-5:11 pm

2 stops15h 32m

$503
Cheapest one-way

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/8

6:00 am-4:49 pm

2 stops12h 49m

$197

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/14

2:10 pm-10:35 pm

2 stops10h 25m

$239

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 6/23

3:45 pm-12:30 am

2 stops10h 45m

$290

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 6/17

3:45 pm-12:30 am

2 stops10h 45m

$290
Quickest one-way

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/8

3:31 pm-10:32 pm

1 stop9h 01m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Boise flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

How much does it cost to fly round-trip from Portland, Maine to Boise?

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 May 2, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited 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
4,314 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,314 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,462 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,678 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,673 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Entertainment

7.5

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 7h 25m. Fly via American Airlines, 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, American Airlines ($312), Delta ($332), and Southwest ($352) offers the cheapest pricing from Portland, Maine to Boise. You may be able to fly from Portland, Maine to Boise for 40% 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.

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 May 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$312Average$463FlexibilityNo cancel feeOn-time71%
DeltaCheapest$332Average$418FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$352Average$447FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$356Average$640FlexibilityNo cancel feeOn-time69%

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