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Cheap flights from Portland, Maine to Boise from $185

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 2/25. 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

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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
1:35 pm - 10:38 pm
PWM
-
BOI
11h 03m1 stop
Delta Logo
11:30 pm - 12:18 pm
BOI
-
PWM
10h 48m1 stop
$447Delta
Wed, May 13 - Mon, May 18
Delta Logo
12:50 pm - 11:59 pm
PWM
-
BOI
13h 09m2 stops
Delta Logo
11:30 pm - 12:18 pm
BOI
-
PWM
10h 48m1 stop
$452Delta
Wed, May 13 - Mon, May 18
Delta Logo
12:50 pm - 11:59 pm
PWM
-
BOI
13h 09m2 stops
Delta Logo
11:30 pm - 11:55 am
BOI
-
PWM
10h 25m2 stops
$457Delta
Wed, May 13 - Mon, May 18
United Airlines Logo
6:00 am - 7:45 pm
PWM
-
BOI
15h 45m2 stops
United Airlines Logo
7:45 am - 9:01 am
BOI
-
PWM
23h 16m2 stops
$482United Airlines
Sat, Jan 17 - Tue, Jan 20

Delta flights from Portland, Maine to Boise

Our best Delta deals on Portland, Maine to Boise flight tickets
Delta
May 13
PWM1:35 pmPortland
11h 03m
1 stop
BOI10:38 pmBoise Air Term. Gowen Fld
May 18
BOI11:30 pmBoise Air Term. Gowen Fld
10h 48m
1 stop
PWM12:18 pmPortland
$447
Find similar
Delta
May 13
PWM12:50 pmPortland
13h 09m
2 stops
BOI11:59 pmBoise Air Term. Gowen Fld
May 18
BOI11:30 pmBoise Air Term. Gowen Fld
10h 48m
1 stop
PWM12:18 pmPortland
$452
Find similar
Delta
May 13
PWM12:50 pmPortland
13h 09m
2 stops
BOI11:59 pmBoise Air Term. Gowen Fld
May 18
BOI11:30 pmBoise Air Term. Gowen Fld
10h 25m
2 stops
PWM11:55 amPortland
$457
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 December 15, 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

Wed 5/13

1:35 pm-10:38 pm

1 stop11h 03m

Boise Air Term. Gowen Fld

Mon 5/18

11:30 pm-12:18 pm

1 stop10h 48m

$447

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 5/13

12:50 pm-11:59 pm

2 stops13h 09m

Boise Air Term. Gowen Fld

Mon 5/18

11:30 pm-12:18 pm

1 stop10h 48m

$452

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 5/13

12:50 pm-11:59 pm

2 stops13h 09m

Boise Air Term. Gowen Fld

Mon 5/18

11:30 pm-11:55 am

2 stops10h 25m

$457

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 1/17

6:00 am-7:45 pm

2 stops15h 45m

Boise Air Term. Gowen Fld

Tue 1/20

7:45 am-9:01 am

2 stops23h 16m

$482

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 2/25

12:15 pm-9:56 pm

2 stops11h 41m

$185

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 2/25

5:31 am-12:28 pm

1 stop8h 57m

$189

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 2/25

6:18 pm-11:03 am

3 stops42h 45m

$213

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 Saturday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $487. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $657. 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 $497. In the evening is when there is more demand to fly to Boise, so prices are often more expensive at around $667 per ticket.

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

You could potentially save up to 65% 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

Fastest flight time

11h 03m

Direct flights

None
The fastest flight from Portland, Maine to Boise takes 11h 03m
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. 11h 03m 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
11,052 reviews
Search American Airlines flights
SouthwestPriceFrom $356Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
United AirlinesPriceFrom $356Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
DeltaPriceFrom $365Free CancellationRating
7.9
8,007 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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