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$182+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
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 July 29, 2026.

This Delta deal was found by Cheapflights users on 7/26. 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 10/246:01 am
PWM
-
BOI
1 stop9h 33m
Delta
Tue 10/271:40 pm
BOI
-
PWM
1 stop7h 55m
Delta
Deal found 7/26$369
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/96:00 am
PWM
-
BOI
1 stop7h 26m
United Airlines
Wed 9/237:05 pm
BOI
-
PWM
2 stops12h 03m
United Airlines
Deal found 7/26$374
This Southwest deal was found by Cheapflights users on 7/26. 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 10/215:40 am
PWM
-
BOI
2 stops11h 05m
Southwest
Wed 10/2811:20 am
BOI
-
PWM
2 stops9h 15m
Southwest
Deal found 7/26$379
This Delta deal was found by Cheapflights users on 7/25. 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 9/56:05 am
PWM
-
BOI
1 stop8h 44m
Delta
Mon 9/2111:10 pm
BOI
-
PWM
2 stops12h 06m
Delta
Deal found 7/25$384
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 8/245:30 am
PWM
-
BOI
2 stops13h 19m
American Airlines
Mon 8/318:01 am
BOI
-
PWM
2 stops12h 47m
American Airlines
Deal found 7/25$386
This Southwest deal was found by Cheapflights users on 7/26. 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.
Thu 10/221:05 pm
PWM
-
BOI
2 stops11h 50m
Southwest
Thu 10/297:55 am
BOI
-
PWM
2 stops11h 55m
Southwest
Deal found 7/26$390
This Delta deal was found by Cheapflights users on 7/26. 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 10/206:01 am
PWM
-
BOI
1 stop9h 33m
Delta
Tue 10/271:40 pm
BOI
-
PWM
1 stop7h 55m
Delta
Deal found 7/26$394
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 8/245:15 am
PWM
-
BOI
2 stops12h 16m
United Airlines
Mon 8/3112:24 pm
BOI
-
PWM
1 stop6h 59m
United Airlines
Deal found 7/25$397
This Delta deal was found by Cheapflights users on 7/26. 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 10/232:09 pm
PWM
-
BOI
1 stop9h 48m
Delta
Tue 10/271:40 pm
BOI
-
PWM
1 stop7h 55m
Delta
Deal found 7/26$402
This Delta deal was found by Cheapflights users on 7/26. 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 10/214:47 pm
PWM
-
BOI
2 stops9h 12m
Delta
Fri 10/301:40 pm
BOI
-
PWM
1 stop7h 55m
Delta
Deal found 7/26$407
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Mon 8/246:03 am
PWM
-
BOI
1 stop7h 25m
United Airlines
Sun 8/3012:24 pm
BOI
-
PWM
1 stop6h 59m
United Airlines
Deal found 7/24$423

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 July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(Delta)

One-way from

$182
(American Airlines)

Popular in

October

Cheapest in

January

Average price

$631
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 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. 10% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 29, 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 9/5

6:05 am-12:49 pm

1 stop8h 44m

Boise Air Term. Gowen Fld

Mon 9/21

11:10 pm-1:16 pm

2 stops12h 06m

$384

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/22

1:05 pm-10:55 pm

2 stops11h 50m

Boise Air Term. Gowen Fld

Mon 11/2

8:30 pm-9:55 am

2 stops11h 25m

$384

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 9/18

6:00 am-1:01 pm

1 stop9h 01m

Boise Air Term. Gowen Fld

Mon 9/21

11:10 pm-1:16 pm

2 stops12h 06m

$438

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 9/5

6:05 am-5:52 pm

2 stops13h 47m

Boise Air Term. Gowen Fld

Mon 9/7

11:10 pm-10:55 am

2 stops9h 45m

$444

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 9/9

3:37 pm-9:45 pm

1 stop8h 08m

Boise Air Term. Gowen Fld

Wed 9/23

12:28 pm-9:23 pm

1 stop6h 55m

$451

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 11/3

3:23 pm-9:32 pm

1 stop8h 09m

Boise Air Term. Gowen Fld

Sat 11/7

12:37 pm-9:51 pm

1 stop7h 14m

$473
Quickest round-trip

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/22

6:00 am-11:28 am

1 stop7h 28m

Boise Air Term. Gowen Fld

Wed 11/4

6:30 am-4:02 pm

1 stop7h 32m

$479
Cheapest one-way
Quickest one-way

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/15

6:00 am-11:26 am

1 stop7h 26m

$185

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 10/24

6:01 am-1:34 pm

1 stop9h 33m

$185

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 9/9

3:37 pm-9:45 pm

1 stop8h 08m

$185

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 17 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 July.
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?

Airfare is typical for this route at the moment.

Portland, Maine to Boise flights typically cost between $365 and $444 in October.
The cheapest round-trip price found within the last 5 days was $369 on Delta (Oct 24-Oct 27).

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 July 29, 2026.
Get a feel of what it's like to fly with United Airlines and American 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.
United Airlines
7.4
Good
10,052 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,052 reviews
United Airlines
7.4
Good
10,052 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
American Airlines
7.1
Good
11,839 reviews
United Airlines
7.4
Good
10,052 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

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 8h 44m. 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 ($372), and United Airlines ($485) offers the cheapest pricing from Portland, Maine to Boise. You may be able to fly from Portland, Maine to Boise for 34% 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

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Top 2 airlines flying from Portland to Boise

Discover the top 2 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 July 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$372Average$535FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$485Average$582FlexibilityNo cancel feeOn-time69%

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