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Cheap flights from Portland, Maine to Boise from $170

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 12/7. 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

Enter your travel dates to find the best prices.
Delta Logo
5:30 am - 6:28 pmPWM-BOI
14h 58m2 stops
Delta Logo
8:50 am - 11:04 pmBOI-PWM
12h 14m2 stops
$300Delta
Find Deal
Tue, Jan 27 - Tue, Feb 24
Delta Logo
5:30 am - 8:12 pmPWM-BOI
16h 42m2 stops
Delta Logo
1:41 pm - 11:04 pmBOI-PWM
7h 23m1 stop
$353Delta
Find Deal
Sat, Jan 24 - Tue, Feb 24
Delta Logo
5:30 am - 12:31 pmPWM-BOI
9h 01m1 stop
Delta Logo
1:41 pm - 11:04 pmBOI-PWM
7h 23m1 stop
$367Delta
Find Deal
Tue, Jan 27 - Tue, Feb 24
Southwest Logo
12:45 pm - 11:10 pmPWM-BOI
12h 25m2 stops
Southwest Logo
11:20 am - 10:15 pmBOI-PWM
8h 55m2 stops
$373Southwest
Find Deal
Tue, Jan 20 - Tue, Feb 24
Delta Logo
5:30 am - 12:31 pmPWM-BOI
9h 01m1 stop
Delta Logo
7:30 am - 11:04 pmBOI-PWM
13h 34m2 stops
$379Delta
Find Deal
Tue, Jan 20 - Tue, Feb 24
Southwest Logo
5:45 am - 3:20 pmPWM-BOI
11h 35m2 stops
Southwest Logo
7:05 am - 11:05 pmBOI-PWM
14h 00m2 stops
$423Southwest
Find Deal
Tue, Feb 24 - Tue, Mar 17
American Airlines Logo
5:37 pm - 1:03 pmPWM-BOI
21h 26m1 stop
American Airlines Logo
6:44 am - 11:37 pmBOI-PWM
14h 53m2 stops
$599American Airlines
Find Deal
Wed, Nov 19 - Wed, Dec 3
United Airlines Logo
6:00 am - 9:32 pmPWM-BOI
17h 32m2 stops
United Airlines Logo
4:26 pm - 11:11 pmBOI-PWM
28h 45m3 stops
$647United Airlines
Find Deal
Mon, Feb 23 - Tue, Mar 17
United Airlines Logo
8:40 am - 6:07 pmPWM-BOI
11h 27m2 stops
United Airlines Logo
8:15 am - 11:30 pmBOI-PWM
13h 15m3 stops
$695United Airlines
Find Deal
Wed, Jan 28 - Sun, Feb 1
American Airlines Logo
7:00 am - 7:25 pmPWM-BOI
14h 25m3 stops
American Airlines Logo
7:00 am - 11:49 pmBOI-PWM
14h 49m2 stops
$821American Airlines
Find Deal
Tue, Jan 20 - Tue, Feb 24

Delta flights from Portland, Maine to Boise

Our best Delta deals on Portland, Maine to Boise flight tickets
Delta
Jan 27
PWM5:30 amPortland
14h 58m
2 stops
BOI6:28 pmBoise Air Term. Gowen Fld
Feb 24
BOI8:50 amBoise Air Term. Gowen Fld
12h 14m
2 stops
PWM11:04 pmPortland
$300
Find similar
Delta
Jan 24
PWM5:30 amPortland
16h 42m
2 stops
BOI8:12 pmBoise Air Term. Gowen Fld
Feb 24
BOI1:41 pmBoise Air Term. Gowen Fld
7h 23m
1 stop
PWM11:04 pmPortland
$353
Find similar
Delta
Jan 27
PWM5:30 amPortland
9h 01m
1 stop
BOI12:31 pmBoise Air Term. Gowen Fld
Feb 24
BOI1:41 pmBoise Air Term. Gowen Fld
7h 23m
1 stop
PWM11:04 pmPortland
$367
Find similar

Southwest flights from Portland, Maine to Boise

Our best Southwest deals on Portland, Maine to Boise flight tickets
Southwest
Jan 20
PWM12:45 pmPortland
12h 25m
2 stops
BOI11:10 pmBoise Air Term. Gowen Fld
Feb 24
BOI11:20 amBoise Air Term. Gowen Fld
8h 55m
2 stops
PWM10:15 pmPortland
$373
Find similar
Southwest
Feb 24
PWM5:45 amPortland
11h 35m
2 stops
BOI3:20 pmBoise Air Term. Gowen Fld
Mar 17
BOI7:05 amBoise Air Term. Gowen Fld
14h 00m
2 stops
PWM11:05 pmPortland
$423
Find similar
Southwest
Feb 23
PWM5:35 amPortland
12h 15m
2 stops
BOI3:50 pmBoise Air Term. Gowen Fld
Mar 11
BOI6:05 amBoise Air Term. Gowen Fld
15h 00m
2 stops
PWM11:05 pmPortland
$429
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 November 6, 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

Tue 1/27

5:30 am-6:28 pm

2 stops14h 58m

Boise Air Term. Gowen Fld

Tue 2/24

8:50 am-11:04 pm

2 stops12h 14m

$300

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 1/24

5:30 am-8:12 pm

2 stops16h 42m

Boise Air Term. Gowen Fld

Tue 2/24

1:41 pm-11:04 pm

1 stop7h 23m

$353

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 1/27

5:30 am-12:31 pm

1 stop9h 01m

Boise Air Term. Gowen Fld

Tue 2/24

1:41 pm-11:04 pm

1 stop7h 23m

$367

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 1/20

12:45 pm-11:10 pm

2 stops12h 25m

Boise Air Term. Gowen Fld

Tue 2/24

11:20 am-10:15 pm

2 stops8h 55m

$373

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 1/20

5:30 am-12:31 pm

1 stop9h 01m

Boise Air Term. Gowen Fld

Tue 2/24

7:30 am-11:04 pm

2 stops13h 34m

$379

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 2/24

5:45 am-3:20 pm

2 stops11h 35m

Boise Air Term. Gowen Fld

Tue 3/17

7:05 am-11:05 pm

2 stops14h 00m

$423

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 11/19

5:37 pm-1:03 pm

1 stop21h 26m

Boise Air Term. Gowen Fld

Wed 12/3

6:44 am-11:37 pm

2 stops14h 53m

$599

PortlandBoise

PWM - BOI

PWMBOI

Portland

Mon 2/23

6:00 am-9:32 pm

2 stops17h 32m

Boise Air Term. Gowen Fld

Tue 3/17

4:26 pm-11:11 pm

3 stops28h 45m

$647

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 1/28

8:40 am-6:07 pm

2 stops11h 27m

Boise Air Term. Gowen Fld

Sun 2/1

8:15 am-11:30 pm

3 stops13h 15m

$695

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 1/20

7:00 am-7:25 pm

3 stops14h 25m

Boise Air Term. Gowen Fld

Tue 2/24

7:00 am-11:49 pm

2 stops14h 49m

$821

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $441.

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 2% 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. 8h 05m 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
11,040 reviews
Search American Airlines flights
SouthwestPriceFrom $356Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
United AirlinesPriceFrom $356Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
DeltaPriceFrom $365Free CancellationRating
7.9
8,001 reviews
Search Delta flights

Traveling to a place near Boise?

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