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Cheap flights from Idaho to Portland from $192

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Portland departing on 4/21. 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 Idaho to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:00 am - 7:04 pm
BOI
-
PWM
12h 04m
2 stops
United Airlines Logo
4:50 pm - 10:50 pm
PWM
-
BOI
8h 00m
1 stop
$420United Airlines
Tue, May 5 - Wed, May 13
American Airlines Logo
1:29 pm - 12:13 am
BOI
-
PWM
8h 44m
1 stop
American Airlines Logo
10:24 am - 10:54 pm
PWM
-
BOI
14h 30m
2 stops
$423American Airlines
Tue, May 5 - Wed, May 13
Southwest Logo
6:40 am - 10:35 pm
BOI
-
PWM
13h 55m
2 stops
Southwest Logo
1:00 pm - 10:10 pm
PWM
-
BOI
11h 10m
2 stops
$424Southwest
Tue, May 5 - Wed, May 13
United Airlines Logo
5:00 am - 3:41 pm
BOI
-
PWM
8h 41m
1 stop
United Airlines Logo
4:50 pm - 10:50 pm
PWM
-
BOI
8h 00m
1 stop
$430United Airlines
Tue, May 5 - Wed, May 13
American Airlines Logo
6:30 am - 11:01 pm
GEG
-
PWM
13h 31m
2 stops
American Airlines Logo
6:15 am - 12:16 pm
PWM
-
GEG
9h 01m
1 stop
$430American Airlines
Mon, Aug 24 - Tue, Sep 1
Delta Logo
11:35 pm - 2:11 pm
BOI
-
PWM
12h 36m
2 stops
Delta Logo
12:55 pm - 10:28 pm
PWM
-
BOI
11h 33m
2 stops
$431Delta
Tue, May 5 - Wed, May 13
American Airlines Logo
3:49 pm - 12:35 am
JAC
-
PWM
6h 46m
1 stop
American Airlines Logo
7:52 am - 7:24 pm
PWM
-
JAC
13h 32m
2 stops
$434American Airlines
Thu, May 21 - Sun, May 24
Southwest Logo
6:55 am - 10:25 pm
GEG
-
PWM
12h 30m
2 stops
Southwest Logo
1:05 pm - 10:55 pm
PWM
-
GEG
12h 50m
2 stops
$435Southwest
Mon, Aug 24 - Tue, Sep 1
American Airlines Logo
3:11 pm - 12:35 am
BOI
-
PWM
7h 24m
1 stop
American Airlines Logo
6:28 am - 2:20 pm
PWM
-
BOI
9h 52m
1 stop
$437American Airlines
Wed, Jun 3 - Sat, Jun 6
Delta Logo
11:35 pm - 2:11 pm
BOI
-
PWM
12h 36m
2 stops
Delta Logo
12:55 pm - 10:28 pm
PWM
-
BOI
11h 33m
2 stops
$443Delta
Tue, May 5 - Wed, May 13

United Airlines flights from Idaho to Portland, Maine

Our best United Airlines deals on Idaho to Portland, Maine flight tickets
United Airlines
May 5
BOI5:00 amBoise Air Term. Gowen Fld
12h 04m
2 stops
PWM7:04 pmPortland
May 13
PWM4:50 pmPortland
8h 00m
1 stop
BOI10:50 pmBoise Air Term. Gowen Fld
$420
United Airlines
May 5
BOI5:00 amBoise Air Term. Gowen Fld
8h 41m
1 stop
PWM3:41 pmPortland
May 13
PWM4:50 pmPortland
8h 00m
1 stop
BOI10:50 pmBoise Air Term. Gowen Fld
$430
United Airlines
May 5
BOI8:28 amBoise Air Term. Gowen Fld
13h 01m
2 stops
PWM11:29 pmPortland
May 6
PWM5:30 amPortland
13h 18m
2 stops
BOI4:48 pmBoise Air Term. Gowen Fld
$503

Southwest flights from Idaho to Portland, Maine

Our best Southwest deals on Idaho to Portland, Maine flight tickets
Southwest
May 5
BOI6:40 amBoise Air Term. Gowen Fld
13h 55m
2 stops
PWM10:35 pmPortland
May 13
PWM1:00 pmPortland
11h 10m
2 stops
BOI10:10 pmBoise Air Term. Gowen Fld
$424
Southwest
Aug 24
GEG6:55 amSpokane
12h 30m
2 stops
PWM10:25 pmPortland
Sep 1
PWM1:05 pmPortland
12h 50m
2 stops
GEG10:55 pmSpokane
$435
Southwest
Jun 8
BOI8:45 amBoise Air Term. Gowen Fld
11h 25m
1 stop
PWM10:10 pmPortland
Jun 24
PWM5:30 amPortland
11h 55m
2 stops
BOI3:25 pmBoise Air Term. Gowen Fld
$464

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to Portland, Maine 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 April 2, 2026.
Use the filters below to find and compare flights from Idaho to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoisePortland

BOI - PWM

BOIPWM

Boise Air Term. Gowen Fld

Tue 5/5

5:00 am-7:04 pm

2 stops12h 04m

Portland

Wed 5/13

4:50 pm-10:50 pm

1 stop8h 00m

$420

BoisePortland

BOI - PWM

BOIPWM

Boise Air Term. Gowen Fld

Tue 5/5

1:29 pm-12:13 am

1 stop8h 44m

Portland

Wed 5/13

10:24 am-10:54 pm

2 stops14h 30m

$423

BoisePortland

BOI - PWM

BOIPWM

Boise Air Term. Gowen Fld

Tue 5/5

6:40 am-10:35 pm

2 stops13h 55m

Portland

Wed 5/13

1:00 pm-10:10 pm

2 stops11h 10m

$424
Quickest round-trip

BoisePortland

BOI - PWM

BOIPWM

Boise Air Term. Gowen Fld

Tue 5/5

5:00 am-3:41 pm

1 stop8h 41m

Portland

Wed 5/13

4:50 pm-10:50 pm

1 stop8h 00m

$430

SpokanePortland

GEG - PWM

GEGPWM

Spokane

Mon 8/24

6:30 am-11:01 pm

2 stops13h 31m

Portland

Tue 9/1

6:15 am-12:16 pm

1 stop9h 01m

$430

BoisePortland

BOI - PWM

BOIPWM

Boise Air Term. Gowen Fld

Tue 5/5

11:35 pm-2:11 pm

2 stops12h 36m

Portland

Wed 5/13

12:55 pm-10:28 pm

2 stops11h 33m

$431

JacksonPortland

JAC - PWM

JACPWM

Jackson Hole

Thu 5/21

3:49 pm-12:35 am

1 stop6h 46m

Portland

Sun 5/24

7:52 am-7:24 pm

2 stops13h 32m

$434

SpokanePortland

GEG - PWM

GEGPWM

Spokane

Mon 8/24

6:55 am-10:25 pm

2 stops12h 30m

Portland

Tue 9/1

1:05 pm-10:55 pm

2 stops12h 50m

$435

BoisePortland

BOI - PWM

BOIPWM

Boise Air Term. Gowen Fld

Wed 6/3

3:11 pm-12:35 am

1 stop7h 24m

Portland

Sat 6/6

6:28 am-2:20 pm

1 stop9h 52m

$437

BoisePortland

BOI - PWM

BOIPWM

Boise Air Term. Gowen Fld

Tue 5/5

11:35 pm-2:11 pm

2 stops12h 36m

Portland

Wed 5/13

12:55 pm-10:28 pm

2 stops11h 33m

$443

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

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

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

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

You could potentially save up to 20% on your flight if you consider stops on a Idaho to Portland, Maine flight.

Cheap Idaho to Portland, Maine flight deals and tips

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

Fastest flight time

6h 51m

Direct flights

None
The fastest flight from Idaho to Portland, Maine takes 6h 51m
There are no direct flights from Idaho to Portland, Maine. There are no popular flight routes from Idaho to Portland, Maine.
Search flight deals

Frequently asked questions about flying from Idaho to Portland, Maine

  • When did momondo last update prices for flights from Idaho to Portland Airport?

    Prices for flights from Idaho to Portland Airport refresh daily.

  • How many operators does momondo search for flights from Idaho to Portland Airport?

  • How old do you have to be to fly from Idaho to Portland 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 Idaho to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The necessary travel and health documents for your Portland Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Portland, Maine

Compare and see reviews for airlines that fly from Idaho to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $350Free CancellationRating
7.1
11,548 reviews
Search American Airlines flights
United AirlinesPriceFrom $391Free CancellationRating
7.4
9,533 reviews
Search United Airlines flights
SouthwestPriceFrom $410Free CancellationRating
8.0
4,336 reviews
Search Southwest flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Lewiston
Brunswick
Bartlett
Gorham
Auburn
Windham
Intervale
Bath
Oxford
Georgetown
Falmouth
Tamworth

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho to Portland. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Portland from Idaho with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Portland from Idaho.

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

Yes momondo offers price alerts on flights to Portland from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Portland, Maine trip

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