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

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

What airlines fly to Idaho?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to Idaho from Portland, Maine according to our data. Delta is the first choice among our users, with 37% 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 April 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.

$223 Cheap Flights from Portland to Idaho in 2026

1 adult

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Find the cheapest flights from Portland, Maine to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 1:14 pm

PWM

GEG

10h 14m

1 stop

2:08 pm - 12:37 am

GEG

PWM

7h 29m

1 stop

$383American Airlines

Tue, Jun 2 - Tue, Jun 9

8:04 am - 8:43 pm

PWM

GEG

15h 39m

2 stops

2:08 pm - 12:37 am

GEG

PWM

7h 29m

1 stop

$388American Airlines

Tue, Jun 2 - Tue, Jun 9

2:05 pm - 11:35 pm

PWM

GEG

12h 30m

2 stops

6:20 am - 12:52 am

GEG

PWM

15h 32m

2 stops

$393Delta

Wed, Jun 3 - Wed, Jun 10

5:42 am - 1:14 pm

PWM

GEG

10h 32m

2 stops

6:30 am - 10:47 pm

GEG

PWM

13h 17m

2 stops

$399American Airlines

Tue, Jun 2 - Tue, Jun 9

11:37 am - 8:43 pm

PWM

GEG

12h 06m

2 stops

2:08 pm - 12:40 am

GEG

PWM

7h 32m

1 stop

$404American Airlines

Sat, May 30 - Sat, Jun 6

3:45 pm - 12:25 am

PWM

BOI

10h 40m

2 stops

7:50 pm - 9:45 am

BOI

PWM

11h 55m

2 stops

$435Southwest

Tue, Jun 9 - Sun, Jun 14

11:38 am - 6:57 pm

PWM

JAC

9h 19m

2 stops

8:30 am - 11:59 pm

JAC

PWM

13h 29m

2 stops

$442Delta

Sat, Sep 5 - Fri, Sep 11

7:40 am - 2:10 pm

PWM

BOI

8h 30m

1 stop

12:10 pm - 9:30 pm

BOI

PWM

7h 20m

1 stop

$467Southwest

Fri, Aug 21 - Mon, Aug 24

6:00 am - 5:56 pm

PWM

BOI

13h 56m

2 stops

12:38 pm - 9:41 pm

BOI

PWM

7h 03m

1 stop

$472United Airlines

Sat, Jun 27 - Sat, Jul 4

3:31 pm - 9:07 pm

PWM

IDA

7h 36m

1 stop

7:00 am - 9:51 pm

IDA

PWM

12h 51m

2 stops

$614United Airlines

Fri, May 22 - Sun, May 24

United Airlines flights from Portland, Maine to Idaho

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

United Airlines

Jun 27

PWM6:00 amPortland

13h 56m

2 stops

BOI5:56 pmBoise Air Term. Gowen Fld

Jul 4

BOI12:38 pmBoise Air Term. Gowen Fld

7h 03m

1 stop

PWM9:41 pmPortland

$472

United Airlines

Sep 1

PWM6:00 amPortland

7h 25m

1 stop

BOI11:25 amBoise Air Term. Gowen Fld

Sep 2

BOI7:05 amBoise Air Term. Gowen Fld

14h 54m

2 stops

PWM11:59 pmPortland

$498

United Airlines

Sep 1

PWM6:00 amPortland

15h 27m

2 stops

BOI7:27 pmBoise Air Term. Gowen Fld

Sep 2

BOI7:05 amBoise Air Term. Gowen Fld

14h 54m

2 stops

PWM11:59 pmPortland

$503

Southwest flights from Portland, Maine to Idaho

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

Southwest

Jun 9

PWM3:45 pmPortland

10h 40m

2 stops

BOI12:25 amBoise Air Term. Gowen Fld

Jun 14

BOI7:50 pmBoise Air Term. Gowen Fld

11h 55m

2 stops

PWM9:45 amPortland

$435

Southwest

Aug 21

PWM7:40 amPortland

8h 30m

1 stop

BOI2:10 pmBoise Air Term. Gowen Fld

Aug 24

BOI12:10 pmBoise Air Term. Gowen Fld

7h 20m

1 stop

PWM9:30 pmPortland

$467

Southwest

Aug 21

PWM1:05 pmPortland

11h 30m

2 stops

BOI10:35 pmBoise Air Term. Gowen Fld

Aug 24

BOI12:10 pmBoise Air Term. Gowen Fld

8h 15m

2 stops

PWM10:25 pmPortland

$477

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Tue 6/2

6:00 am-1:14 pm

1 stop10h 14m

Spokane

Tue 6/9

2:08 pm-12:37 am

1 stop7h 29m

$383

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Tue 6/2

8:04 am-8:43 pm

2 stops15h 39m

Spokane

Tue 6/9

2:08 pm-12:37 am

1 stop7h 29m

$388

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Wed 6/3

2:05 pm-11:35 pm

2 stops12h 30m

Spokane

Wed 6/10

6:20 am-12:52 am

2 stops15h 32m

$393

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Tue 6/2

5:42 am-1:14 pm

2 stops10h 32m

Spokane

Tue 6/9

6:30 am-10:47 pm

2 stops13h 17m

$399

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Sat 5/30

11:37 am-8:43 pm

2 stops12h 06m

Spokane

Sat 6/6

2:08 pm-12:40 am

1 stop7h 32m

$404

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 6/9

3:45 pm-12:25 am

2 stops10h 40m

Boise Air Term. Gowen Fld

Sun 6/14

7:50 pm-9:45 am

2 stops11h 55m

$435

PortlandJackson

PWM - JAC

PWMJAC

Portland

Sat 9/5

11:38 am-6:57 pm

2 stops9h 19m

Jackson Hole

Fri 9/11

8:30 am-11:59 pm

2 stops13h 29m

$442

Quickest round-trip

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/21

7:40 am-2:10 pm

1 stop8h 30m

Boise Air Term. Gowen Fld

Mon 8/24

12:10 pm-9:30 pm

1 stop7h 20m

$467

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 6/27

6:00 am-5:56 pm

2 stops13h 56m

Boise Air Term. Gowen Fld

Sat 7/4

12:38 pm-9:41 pm

1 stop7h 03m

$472

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Fri 5/22

3:31 pm-9:07 pm

1 stop7h 36m

Idaho Falls Fanning Field

Sun 5/24

7:00 am-9:51 pm

2 stops12h 51m

$614

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

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 22m
Direct flights	None

The fastest flight from Portland, Maine to Idaho takes 7h 22m

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 April 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 11,620 reviews	Search American Airlines flights
Delta	PriceFrom $339	Free Cancellation	Rating 7.9 8,422 reviews	Search Delta flights
Southwest	PriceFrom $352	Free Cancellation	Rating 8.0 4,327 reviews	Search Southwest flights
United Airlines	PriceFrom $356	Free Cancellation	Rating 7.4 9,604 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.