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Cheap flights from Portland, Maine to Boise from $325

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 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Portland, Maine to Boise

Cheap round-trip flights

Delta Logo
6:30 am - 11:54 pmPWM-BOI
19h 24m2 stops
Delta Logo
3:00 pm - 10:49 amBOI-PWM
17h 49m2 stops
$410Delta
Find Deal
Sat, Oct 25 - Tue, Oct 28
Delta Logo
6:00 am - 12:29 pmPWM-BOI
8h 29m1 stop
Delta Logo
1:39 pm - 1:06 pmBOI-PWM
21h 27m2 stops
$421Delta
Find Deal
Sat, Oct 25 - Tue, Oct 28
Southwest Logo
2:40 pm - 12:20 amPWM-BOI
11h 40m2 stops
Southwest Logo
8:15 pm - 11:15 amBOI-PWM
13h 00m2 stops
$435Southwest
Find Deal
Thu, Oct 23 - Mon, Oct 27
Delta Logo
1:27 pm - 10:29 pmPWM-BOI
11h 02m1 stop
Delta Logo
7:45 pm - 12:00 pmBOI-PWM
14h 15m2 stops
$447Delta
Find Deal
Thu, Oct 23 - Mon, Oct 27
Delta Logo
6:00 am - 12:29 pmPWM-BOI
8h 29m1 stop
Delta Logo
1:39 pm - 10:49 amBOI-PWM
19h 10m2 stops
$451Delta
Find Deal
Sat, Oct 25 - Tue, Oct 28
American Airlines Logo
6:14 am - 12:46 pmPWM-BOI
8h 32m1 stop
American Airlines Logo
1:26 pm - 10:45 pmBOI-PWM
7h 19m1 stop
$493American Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
American Airlines Logo
6:20 am - 12:27 pmPWM-BOI
8h 07m1 stop
American Airlines Logo
1:07 pm - 11:59 pmBOI-PWM
8h 52m1 stop
$547American Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 5
United Airlines Logo
6:14 am - 11:39 amPWM-BOI
7h 25m1 stop
United Airlines Logo
2:31 pm - 3:48 pmBOI-PWM
23h 17m1 stop
$572United Airlines
Find Deal
Sat, Oct 25 - Tue, Oct 28
United Airlines Logo
8:00 am - 9:42 amPWM-BOI
27h 42m3 stops
United Airlines Logo
7:00 pm - 10:04 amBOI-PWM
13h 04m2 stops
$645United Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
Southwest Logo
2:40 pm - 12:20 amPWM-BOI
11h 40m2 stops
Southwest Logo
5:20 am - 4:40 pmBOI-PWM
9h 20m2 stops
$837Southwest
Find Deal
Fri, Oct 10 - Sun, Oct 12

Delta flights from Portland, Maine to Boise

Our best Delta deals on Portland, Maine to Boise flight tickets
Delta
Oct 25
PWM6:30 amPortland
19h 24m
2 stops
BOI11:54 pmBoise Air Term. Gowen Fld
Oct 28
BOI3:00 pmBoise Air Term. Gowen Fld
17h 49m
2 stops
PWM10:49 amPortland
$410
Find similar
Delta
Oct 25
PWM6:00 amPortland
8h 29m
1 stop
BOI12:29 pmBoise Air Term. Gowen Fld
Oct 28
BOI1:39 pmBoise Air Term. Gowen Fld
21h 27m
2 stops
PWM1:06 pmPortland
$421
Find similar
Delta
Oct 23
PWM1:27 pmPortland
11h 02m
1 stop
BOI10:29 pmBoise Air Term. Gowen Fld
Oct 27
BOI7:45 pmBoise Air Term. Gowen Fld
14h 15m
2 stops
PWM12:00 pmPortland
$447
Find similar

United Airlines flights from Portland, Maine to Boise

Our best United Airlines deals on Portland, Maine to Boise flight tickets
United Airlines
Oct 25
PWM6:14 amPortland
7h 25m
1 stop
BOI11:39 amBoise Air Term. Gowen Fld
Oct 28
BOI2:31 pmBoise Air Term. Gowen Fld
23h 17m
1 stop
PWM3:48 pmPortland
$572
Find similar
United Airlines
Oct 23
PWM8:00 amPortland
27h 42m
3 stops
BOI9:42 amBoise Air Term. Gowen Fld
Oct 27
BOI7:00 pmBoise Air Term. Gowen Fld
13h 04m
2 stops
PWM10:04 amPortland
$645
Find similar
United Airlines
Sep 30
PWM6:14 amPortland
7h 25m
1 stop
BOI11:39 amBoise Air Term. Gowen Fld
Oct 4
BOI12:35 pmBoise Air Term. Gowen Fld
7h 09m
1 stop
PWM9:44 pmPortland
$647
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 September 16, 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 10/25

6:30 am-11:54 pm

2 stops19h 24m

Boise Air Term. Gowen Fld

Tue 10/28

3:00 pm-10:49 am

2 stops17h 49m

$410

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 10/25

6:00 am-12:29 pm

1 stop8h 29m

Boise Air Term. Gowen Fld

Tue 10/28

1:39 pm-1:06 pm

2 stops21h 27m

$421

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/23

2:40 pm-12:20 am

2 stops11h 40m

Boise Air Term. Gowen Fld

Mon 10/27

8:15 pm-11:15 am

2 stops13h 00m

$435

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/23

1:27 pm-10:29 pm

1 stop11h 02m

Boise Air Term. Gowen Fld

Mon 10/27

7:45 pm-12:00 pm

2 stops14h 15m

$447

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 10/25

6:00 am-12:29 pm

1 stop8h 29m

Boise Air Term. Gowen Fld

Tue 10/28

1:39 pm-10:49 am

2 stops19h 10m

$451

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/23

6:14 am-12:46 pm

1 stop8h 32m

Boise Air Term. Gowen Fld

Mon 10/27

1:26 pm-10:45 pm

1 stop7h 19m

$493

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/2

6:20 am-12:27 pm

1 stop8h 07m

Boise Air Term. Gowen Fld

Sun 10/5

1:07 pm-11:59 pm

1 stop8h 52m

$547

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 10/25

6:14 am-11:39 am

1 stop7h 25m

Boise Air Term. Gowen Fld

Tue 10/28

2:31 pm-3:48 pm

1 stop23h 17m

$572

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/23

8:00 am-9:42 am

3 stops27h 42m

Boise Air Term. Gowen Fld

Mon 10/27

7:00 pm-10:04 am

2 stops13h 04m

$645

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 10/10

2:40 pm-12:20 am

2 stops11h 40m

Boise Air Term. Gowen Fld

Sun 10/12

5:20 am-4:40 pm

2 stops9h 20m

$837

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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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 August is, on average, the cheapest month to fly to Boise from Portland, Maine, with most prices found around $430. If you aren’t able to travel during the month of August, then book flights to Boise from Portland, Maine during September instead. Flights to Boise in September, while not as cheap as those in August, still average around $452.

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 53% 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

Direct flights

None
There are no direct flights from Portland, Maine to Boise. There are no popular flight routes from Portland, Maine to Boise.
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  • 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 25m 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
8,924 reviews
Search United Airlines flights
DeltaPriceFrom $365Free CancellationRating
7.9
7,957 reviews
Search Delta flights
SouthwestPriceFrom $394Free CancellationRating
8.0
4,242 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.

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