What is the cheapest airline that flies from Portland to Idaho?

American Airlines, Delta, and United Airlines are the most popular carriers operating from Portland to Idaho

What airlines fly to Idaho?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Idaho from Portland, Maine according to our data. American Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Portland Airport to Idaho are updated daily.

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

There are 4 operators available for flights from Portland Airport to Idaho as of June 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Idaho.

What documentation or ID do you need to fly to Idaho?

The required travel and health documents for your Idaho trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$166 Cheap Flights from Portland, Maine to Idaho in 2026

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Find the cheapest flights from Portland, Maine to Idaho

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:12 pm - 11:59 pm

PWM

BOI

12h 47m

2 stops

11:10 am - 11:59 pm

BOI

PWM

10h 49m

2 stops

$267Delta

Tue, Sep 1 - Tue, Sep 15

4:50 pm - 11:44 pm

PWM

GEG

9h 54m

2 stops

7:00 am - 11:17 pm

GEG

PWM

13h 17m

2 stops

$267Delta

Wed, Sep 9 - Wed, Sep 16

12:09 pm - 10:40 pm

PWM

BOI

12h 31m

2 stops

6:30 am - 7:38 pm

BOI

PWM

11h 08m

2 stops

$353American Airlines

Tue, Sep 1 - Tue, Sep 15

12:09 pm - 10:40 pm

PWM

BOI

12h 31m

2 stops

7:02 am - 6:46 pm

BOI

PWM

9h 44m

1 stop

$359American Airlines

Tue, Sep 1 - Tue, Sep 15

6:00 am - 11:24 am

PWM

GEG

8h 24m

1 stop

7:00 am - 11:17 pm

GEG

PWM

13h 17m

2 stops

$367Delta

Wed, Sep 9 - Wed, Sep 16

6:00 am - 11:24 am

PWM

GEG

8h 24m

1 stop

7:00 am - 11:17 pm

GEG

PWM

13h 17m

2 stops

$403Delta

Wed, Sep 9 - Wed, Sep 16

6:00 am - 11:28 am

PWM

BOI

7h 28m

1 stop

12:28 pm - 9:23 pm

BOI

PWM

6h 55m

1 stop

$407United Airlines

Tue, Sep 1 - Tue, Sep 15

5:30 am - 5:22 pm

PWM

IDA

13h 52m

2 stops

5:57 pm - 8:19 am

IDA

PWM

12h 22m

2 stops

$489United Airlines

Sat, Oct 31 - Tue, Nov 3

5:55 am - 3:00 pm

PWM

GEG

12h 05m

2 stops

6:55 am - 10:25 pm

GEG

PWM

12h 30m

2 stops

$490Southwest

Thu, Sep 3 - Mon, Sep 7

5:55 am - 3:00 pm

PWM

GEG

12h 05m

2 stops

6:00 am - 9:30 pm

GEG

PWM

12h 30m

1 stop

$491Southwest

Thu, Sep 3 - Mon, Sep 7

Southwest flights from Portland, Maine to Idaho

Our best Southwest deals on Portland, Maine to Idaho flight tickets

Southwest

Sep 17

PWM7:40 amPortland

8h 30m

1 stop

BOI2:10 pmBoise Air Term. Gowen Fld

Sep 21

BOI12:10 pmBoise Air Term. Gowen Fld

7h 20m

1 stop

PWM9:30 pmPortland

$446

Southwest

Sep 17

PWM7:40 amPortland

8h 30m

1 stop

BOI2:10 pmBoise Air Term. Gowen Fld

Sep 21

BOI7:50 pmBoise Air Term. Gowen Fld

12h 05m

2 stops

PWM9:55 amPortland

$451

Southwest

Sep 17

PWM1:05 pmPortland

11h 30m

2 stops

BOI10:35 pmBoise Air Term. Gowen Fld

Sep 21

BOI7:50 pmBoise Air Term. Gowen Fld

12h 05m

2 stops

PWM9:55 amPortland

$456

United Airlines flights from Portland, Maine to Idaho

Our best United Airlines deals on Portland, Maine to Idaho flight tickets

United Airlines

Sep 1

PWM6:00 amPortland

7h 28m

1 stop

BOI11:28 amBoise Air Term. Gowen Fld

Sep 15

BOI12:28 pmBoise Air Term. Gowen Fld

6h 55m

1 stop

PWM9:23 pmPortland

$407

United Airlines

Oct 31

PWM5:30 amPortland

13h 52m

2 stops

IDA5:22 pmIdaho Falls Fanning Field

Nov 3

IDA5:57 pmIdaho Falls Fanning Field

12h 22m

2 stops

PWM8:19 amPortland

$489

United Airlines

Sep 2

PWM6:00 amPortland

7h 28m

1 stop

BOI11:28 amBoise Air Term. Gowen Fld

Sep 5

BOI12:24 pmBoise Air Term. Gowen Fld

6h 59m

1 stop

PWM9:23 pmPortland

$506

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/1

1:12 pm-11:59 pm

2 stops12h 47m

Boise Air Term. Gowen Fld

Tue 9/15

11:10 am-11:59 pm

2 stops10h 49m

$267

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Wed 9/9

4:50 pm-11:44 pm

2 stops9h 54m

Spokane

Wed 9/16

7:00 am-11:17 pm

2 stops13h 17m

$267

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/1

12:09 pm-10:40 pm

2 stops12h 31m

Boise Air Term. Gowen Fld

Tue 9/15

6:30 am-7:38 pm

2 stops11h 08m

$353

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/1

12:09 pm-10:40 pm

2 stops12h 31m

Boise Air Term. Gowen Fld

Tue 9/15

7:02 am-6:46 pm

1 stop9h 44m

$359

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Wed 9/9

6:00 am-11:24 am

1 stop8h 24m

Spokane

Wed 9/16

7:00 am-11:17 pm

2 stops13h 17m

$367

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Wed 9/9

6:00 am-11:24 am

1 stop8h 24m

Spokane

Wed 9/16

7:00 am-11:17 pm

2 stops13h 17m

$403

Quickest round-trip

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 9/1

6:00 am-11:28 am

1 stop7h 28m

Boise Air Term. Gowen Fld

Tue 9/15

12:28 pm-9:23 pm

1 stop6h 55m

$407

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Sat 10/31

5:30 am-5:22 pm

2 stops13h 52m

Idaho Falls Fanning Field

Tue 11/3

5:57 pm-8:19 am

2 stops12h 22m

$489

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Thu 9/3

5:55 am-3:00 pm

2 stops12h 05m

Spokane

Mon 9/7

6:55 am-10:25 pm

2 stops12h 30m

$490

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Thu 9/3

5:55 am-3:00 pm

2 stops12h 05m

Spokane

Mon 9/7

6:00 am-9:30 pm

1 stop12h 30m

$491

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Idaho?

In general, February is the cheapest month to fly from Portland, Maine to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Idaho in February, then you should wait until September to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $202.

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

You could potentially save up to 25% on your flight if you consider stops on a Portland, Maine to Idaho flight.

Cheap Portland, Maine to Idaho flight deals and tips

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

Fastest flight time	7h 21m
Direct flights	None

The fastest flight from Portland, Maine to Idaho takes 7h 21m

There are no direct flights from Portland, Maine to Idaho. There are no popular flight routes from Portland, Maine to Idaho.

Search flight deals

Frequently asked questions about flying from Portland, Maine to Idaho

When did momondo last update prices for flights from Portland Airport to Idaho?
Prices for flights from Portland Airport to Idaho are updated daily.
How many operators does momondo search for flights from Portland Airport to Idaho?
There are 4 operators available for flights from Portland Airport to Idaho as of June 2026.
How old do you have to be to fly from Portland Airport to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Portland, Maine to Idaho

Compare and see reviews for airlines that fly from Portland, Maine to Idaho with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $312	Free Cancellation	Rating 7.1 11,642 reviews	Search American Airlines flights
Delta	PriceFrom $332	Free Cancellation	Rating 7.9 8,398 reviews	Search Delta flights
Southwest	PriceFrom $352	Free Cancellation	Rating 8.0 4,255 reviews	Search Southwest flights
United Airlines	PriceFrom $456	Free Cancellation	Rating 7.4 9,771 reviews	Search United Airlines flights

Why use momondo?

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

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 Idaho from Portland.

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

momondo does allow users to show only those flights to Idaho from Portland which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Idaho.

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

If you are not ready to book a flight from Portland to Idaho now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho and let you know when they change.