Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland, Maine to Boise from $172

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Boise departing on 12/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland, Maine to Boise

Cheap round-trip flights

Delta Logo
6:00 am - 12:24 pmPWM-BOI
8h 24m1 stop
Delta Logo
1:30 pm - 12:03 amBOI-PWM
8h 33m1 stop
$333Delta
Find Deal
Sat, Aug 30 - Wed, Sep 3
Delta Logo
6:00 am - 4:57 pmPWM-BOI
12h 57m2 stops
Delta Logo
1:30 pm - 12:03 amBOI-PWM
8h 33m1 stop
$338Delta
Find Deal
Sat, Aug 30 - Wed, Sep 3
Delta Logo
6:31 am - 4:57 pmPWM-BOI
12h 26m2 stops
Delta Logo
10:45 am - 12:03 amBOI-PWM
11h 18m2 stops
$343Delta
Find Deal
Sat, Aug 30 - Wed, Sep 3
American Airlines Logo
12:14 pm - 11:31 pmPWM-BOI
13h 17m2 stops
American Airlines Logo
1:07 pm - 10:43 pmBOI-PWM
7h 36m1 stop
$368American Airlines
Find Deal
Fri, Aug 29 - Tue, Sep 9
American Airlines Logo
12:14 pm - 11:31 pmPWM-BOI
13h 17m2 stops
American Airlines Logo
7:00 am - 8:11 pmBOI-PWM
11h 11m2 stops
$373American Airlines
Find Deal
Fri, Aug 29 - Tue, Sep 9
American Airlines Logo
6:30 am - 12:29 pmPWM-BOI
7h 59m1 stop
American Airlines Logo
1:07 pm - 10:43 pmBOI-PWM
7h 36m1 stop
$380American Airlines
Find Deal
Fri, Aug 29 - Tue, Sep 9
American Airlines Logo
6:30 am - 12:29 pmPWM-BOI
7h 59m1 stop
American Airlines Logo
7:00 am - 8:11 pmBOI-PWM
11h 11m2 stops
$385American Airlines
Find Deal
Fri, Aug 29 - Tue, Sep 9
United Airlines Logo
3:20 pm - 9:21 pmPWM-BOI
8h 01m1 stop
United Airlines Logo
6:15 am - 3:48 pmBOI-PWM
7h 33m1 stop
$463United Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
United Airlines Logo
7:30 am - 7:09 pmPWM-BOI
13h 39m2 stops
United Airlines Logo
2:45 pm - 6:26 pmBOI-PWM
25h 41m2 stops
$523United Airlines
Find Deal
Thu, Sep 4 - Mon, Sep 8
Southwest Logo
2:00 pm - 12:25 amPWM-BOI
12h 25m2 stops
Southwest Logo
6:30 am - 10:25 pmBOI-PWM
13h 55m2 stops
$584Southwest
Find Deal
Thu, Aug 14 - Sun, Aug 17

Delta flights from Portland, Maine to Boise

Our best Delta deals on Portland, Maine to Boise flight tickets
Delta
Aug 30
PWM6:00 amPortland
8h 24m
1 stop
BOI12:24 pmBoise Air Term. Gowen Fld
Sep 3
BOI1:30 pmBoise Air Term. Gowen Fld
8h 33m
1 stop
PWM12:03 amPortland
$333
Find similar
Delta
Aug 30
PWM6:00 amPortland
12h 57m
2 stops
BOI4:57 pmBoise Air Term. Gowen Fld
Sep 3
BOI1:30 pmBoise Air Term. Gowen Fld
8h 33m
1 stop
PWM12:03 amPortland
$338
Find similar
Delta
Aug 30
PWM6:31 amPortland
12h 26m
2 stops
BOI4:57 pmBoise Air Term. Gowen Fld
Sep 3
BOI10:45 amBoise Air Term. Gowen Fld
11h 18m
2 stops
PWM12:03 amPortland
$343
Find similar

United Airlines flights from Portland, Maine to Boise

Our best United Airlines deals on Portland, Maine to Boise flight tickets
United Airlines
Nov 7
PWM3:20 pmPortland
8h 01m
1 stop
BOI9:21 pmBoise Air Term. Gowen Fld
Nov 11
BOI6:15 amBoise Air Term. Gowen Fld
7h 33m
1 stop
PWM3:48 pmPortland
$463
Find similar
United Airlines
Sep 4
PWM7:30 amPortland
13h 39m
2 stops
BOI7:09 pmBoise Air Term. Gowen Fld
Sep 8
BOI2:45 pmBoise Air Term. Gowen Fld
25h 41m
2 stops
PWM6:26 pmPortland
$523
Find similar
United Airlines
Sep 4
PWM10:39 amPortland
14h 55m
2 stops
BOI11:34 pmBoise Air Term. Gowen Fld
Sep 8
BOI2:45 pmBoise Air Term. Gowen Fld
16h 39m
2 stops
PWM9:24 amPortland
$536
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Portland, Maine to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 8/30

6:00 am-12:24 pm

1 stop8h 24m

Boise Air Term. Gowen Fld

Wed 9/3

1:30 pm-12:03 am

1 stop8h 33m

$333

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 8/30

6:00 am-4:57 pm

2 stops12h 57m

Boise Air Term. Gowen Fld

Wed 9/3

1:30 pm-12:03 am

1 stop8h 33m

$338

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 8/30

6:31 am-4:57 pm

2 stops12h 26m

Boise Air Term. Gowen Fld

Wed 9/3

10:45 am-12:03 am

2 stops11h 18m

$343

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/29

12:14 pm-11:31 pm

2 stops13h 17m

Boise Air Term. Gowen Fld

Tue 9/9

1:07 pm-10:43 pm

1 stop7h 36m

$368

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/29

12:14 pm-11:31 pm

2 stops13h 17m

Boise Air Term. Gowen Fld

Tue 9/9

7:00 am-8:11 pm

2 stops11h 11m

$373

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/29

6:30 am-12:29 pm

1 stop7h 59m

Boise Air Term. Gowen Fld

Tue 9/9

1:07 pm-10:43 pm

1 stop7h 36m

$380

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/29

6:30 am-12:29 pm

1 stop7h 59m

Boise Air Term. Gowen Fld

Tue 9/9

7:00 am-8:11 pm

2 stops11h 11m

$385

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 11/7

3:20 pm-9:21 pm

1 stop8h 01m

Boise Air Term. Gowen Fld

Tue 11/11

6:15 am-3:48 pm

1 stop7h 33m

$463

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 9/4

7:30 am-7:09 pm

2 stops13h 39m

Boise Air Term. Gowen Fld

Mon 9/8

2:45 pm-6:26 pm

2 stops25h 41m

$523

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 8/14

2:00 pm-12:25 am

2 stops12h 25m

Boise Air Term. Gowen Fld

Sun 8/17

6:30 am-10:25 pm

2 stops13h 55m

$584

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Boise from

How to get the cheapest flight ticket from Portland, Maine to Boise

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Boise?

The month of September is, on average, the cheapest month to fly to Boise from Portland, Maine, with most prices found around $421. If you aren’t able to travel during the month of September, then book flights to Boise from Portland, Maine during August instead. Flights to Boise in August, while not as cheap as those in September, still average around $464.

What is the cheapest day to depart on your flight to Boise?

Our data shows that Friday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $492. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $944. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

What is the cheapest time of day to depart on your flight to Boise?

Our data shows that the cheapest Portland, Maine to Boise flights are usually those with departure times at noon. Our users have found flights to Boise at noon for as low as $551. In the afternoon is when there is more demand to fly to Boise, so prices are often more expensive at around $756 per ticket.

Can stopping save me money on Portland, Maine to Boise flights?

You could potentially save up to 41% on your flight if you consider stops on a Portland, Maine to Boise flight.

When to book flights from Portland, Maine to Boise

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Boise according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Boise (PWM to BOI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Boise

Best Price Found

$172

Fastest flight time

7h 25m

Direct flights

None

Airports in Boise

1 airport
The best one-way flight to Boise from Portland, Maine in the past 72 hours is $172. The best round-trip flight deal from Portland, Maine to Boise found on momondo in the last 72 hours is $333.
The fastest flight from Portland, Maine to Boise takes 7h 25m
There are no direct flights from Portland, Maine to Boise. Popular non-direct route for this connection is Portland Airport - Boise Air Term. Gowen Fld Airport.
There is 1 airport near Boise: Boise Air Term. Gowen Fld (BOI)
Search flight deals

  • How far is Portland to Boise Air Term. Gowen Fld by plane?

    Boise Air Term. Gowen Fld is 2265.8 mi away from Portland. 7h 33m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Portland Airport to Boise Air Term. Gowen Fld Airport?

    Prices for flights from Portland Airport to Boise Air Term. Gowen Fld Airport are updated daily.

  • How many operators does momondo search for flights from Portland Airport to Boise Air Term. Gowen Fld Airport?

  • How old do you have to be to fly from Portland Airport to Boise Air Term. Gowen Fld Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Boise Air Term. Gowen Fld Airport.

  • What documentation or ID do you need to fly to Boise Air Term. Gowen Fld Airport?

    The travel and health documents required for your trip to Boise Air Term. Gowen Fld Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Boise Air Term. Gowen Fld Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Portland, Maine to Boise?

Best airlines flying from Portland, Maine to Boise

Compare and see reviews for airlines that fly from Portland, Maine to Boise with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $312Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $356Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
DeltaPriceFrom $387Free CancellationRating
8.0
7,981 reviews
Search Delta flights
SouthwestPriceFrom $394Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

Traveling to a place near Boise?

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

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Boise?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Boise from Portland.

Can I find flights from Portland to Boise with flexible booking policies on momondo?

All flight searches from Portland to Boise on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Boise?

momondo provides multiple filters to help you find the best flight to Boise from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Boise right now. Can momondo alert me if prices change?

Price alerts on flights to Boise from Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Boise trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States