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

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

What airlines fly to Idaho?

Delta, United Airlines and Southwest 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 49% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 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 July 2025.

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.

$172 Cheap Flights from Portland to Idaho in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland, Maine to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

6:14 am - 11:20 amPWM-JAC

7h 06m1 stop

12:40 pm - 9:44 pmJAC-PWM

7h 04m1 stop

$325United Airlines

Find Deal

Tue, Oct 14 - Tue, Oct 21

6:00 am - 12:24 pmPWM-BOI

8h 24m1 stop

1:30 pm - 12:03 amBOI-PWM

8h 33m1 stop

$333Delta

Find Deal

Sat, Aug 30 - Wed, Sep 3

6:00 am - 4:57 pmPWM-BOI

12h 57m2 stops

1:30 pm - 12:03 amBOI-PWM

8h 33m1 stop

$338Delta

Find Deal

Sat, Aug 30 - Wed, Sep 3

6:00 am - 11:41 amPWM-GEG

8h 41m1 stop

9:45 am - 10:19 pmGEG-PWM

9h 34m2 stops

$338Delta

Find Deal

Sat, Oct 25 - Tue, Oct 28

6:31 am - 4:57 pmPWM-BOI

12h 26m2 stops

10:45 am - 12:03 amBOI-PWM

11h 18m2 stops

$343Delta

Find Deal

Sat, Aug 30 - Wed, Sep 3

12:14 pm - 11:31 pmPWM-BOI

13h 17m2 stops

1:07 pm - 10:43 pmBOI-PWM

7h 36m1 stop

$368American Airlines

Find Deal

Fri, Aug 29 - Tue, Sep 9

12:14 pm - 11:31 pmPWM-BOI

13h 17m2 stops

7:00 am - 8:11 pmBOI-PWM

11h 11m2 stops

$373American Airlines

Find Deal

Fri, Aug 29 - Tue, Sep 9

6:14 am - 11:20 amPWM-JAC

7h 06m1 stop

7:00 am - 11:13 pmJAC-PWM

14h 13m2 stops

$383United Airlines

Find Deal

Tue, Oct 14 - Tue, Oct 21

10:30 am - 10:05 pmPWM-GEG

14h 35m2 stops

3:05 pm - 9:40 amGEG-PWM

15h 35m2 stops

$420Southwest

Find Deal

Tue, Sep 16 - Sat, Sep 27

3:30 pm - 11:00 pmPWM-GEG

10h 30m2 stops

3:05 pm - 9:40 amGEG-PWM

15h 35m2 stops

$558Southwest

Find Deal

Fri, Aug 15 - Sat, Aug 23

Delta flights from Portland, Maine to Idaho

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

Delta

Aug 30

PWM6:00 amPortland

8h 24m

1 stop

BOI12:24 pmBoise Air Term. Gowen Fld

Sep 3

BOI1:30 pmBoise Air Term. Gowen Fld

8h 33m

1 stop

PWM12:03 amPortland

$333

Find similar

Delta

Aug 30

PWM6:00 amPortland

12h 57m

2 stops

BOI4:57 pmBoise Air Term. Gowen Fld

Sep 3

BOI1:30 pmBoise Air Term. Gowen Fld

8h 33m

1 stop

PWM12:03 amPortland

$338

Find similar

Delta

Aug 30

PWM6:31 amPortland

12h 26m

2 stops

BOI4:57 pmBoise Air Term. Gowen Fld

Sep 3

BOI10:45 amBoise Air Term. Gowen Fld

11h 18m

2 stops

PWM12:03 amPortland

$343

Find similar

United Airlines flights from Portland, Maine to Idaho

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

United Airlines

Oct 14

PWM6:14 amPortland

7h 06m

1 stop

JAC11:20 amJackson Hole

Oct 21

JAC12:40 pmJackson Hole

7h 04m

1 stop

PWM9:44 pmPortland

$325

Find similar

United Airlines

Oct 14

PWM6:14 amPortland

7h 06m

1 stop

JAC11:20 amJackson Hole

Oct 21

JAC7:00 amJackson Hole

14h 13m

2 stops

PWM11:13 pmPortland

$383

Find similar

United Airlines

Nov 1

PWM3:20 pmPortland

7h 17m

1 stop

JAC8:37 pmJackson Hole

Nov 4

JAC7:00 amJackson Hole

6h 48m

1 stop

PWM3:48 pmPortland

$409

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandJackson

PWM - JAC

PWMJAC

Portland

Tue 10/14

6:14 am-11:20 am

1 stop7h 06m

Jackson Hole

Tue 10/21

12:40 pm-9:44 pm

1 stop7h 04m

$325

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 8/30

6:00 am-12:24 pm

1 stop8h 24m

Boise Air Term. Gowen Fld

Wed 9/3

1:30 pm-12:03 am

1 stop8h 33m

$333

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 8/30

6:00 am-4:57 pm

2 stops12h 57m

Boise Air Term. Gowen Fld

Wed 9/3

1:30 pm-12:03 am

1 stop8h 33m

$338

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Sat 10/25

6:00 am-11:41 am

1 stop8h 41m

Spokane

Tue 10/28

9:45 am-10:19 pm

2 stops9h 34m

$338

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 8/30

6:31 am-4:57 pm

2 stops12h 26m

Boise Air Term. Gowen Fld

Wed 9/3

10:45 am-12:03 am

2 stops11h 18m

$343

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/29

12:14 pm-11:31 pm

2 stops13h 17m

Boise Air Term. Gowen Fld

Tue 9/9

1:07 pm-10:43 pm

1 stop7h 36m

$368

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 8/29

12:14 pm-11:31 pm

2 stops13h 17m

Boise Air Term. Gowen Fld

Tue 9/9

7:00 am-8:11 pm

2 stops11h 11m

$373

PortlandJackson

PWM - JAC

PWMJAC

Portland

Tue 10/14

6:14 am-11:20 am

1 stop7h 06m

Jackson Hole

Tue 10/21

7:00 am-11:13 pm

2 stops14h 13m

$383

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Tue 9/16

10:30 am-10:05 pm

2 stops14h 35m

Spokane

Sat 9/27

3:05 pm-9:40 am

2 stops15h 35m

$420

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Fri 8/15

3:30 pm-11:00 pm

2 stops10h 30m

Spokane

Sat 8/23

3:05 pm-9:40 am

2 stops15h 35m

$558

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, September 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 $421. If you don’t want to visit Idaho in September, then you should wait until August to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $464.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Friday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $492. On the other hand, Sunday is the most expensive day to depart from Portland, Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $944.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is at noon. momondo users have found flights departing from Portland, Maine to Idaho at noon for as low as $551. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $756 per ticket.

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

You could potentially save up to 41% 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

Best Price Found	$172
Fastest flight time	7h 06m
Direct flights	None
Airports in Idaho	4 airports

The best one-way flight to Idaho from Portland, Maine in the past 72 hours is $172. The best round-trip flight deal from Portland, Maine to Idaho found on momondo in the last 72 hours is $325.

The fastest flight from Portland, Maine to Idaho takes 7h 06m

There are no direct flights from Portland, Maine to Idaho. Popular non-direct routes for this connection are Portland Airport - Jackson Hole Airport, Portland Airport - Boise Air Term. Gowen Fld Airport and Portland Airport - Spokane Airport.

There are 4 airports near Idaho: Idaho Falls Fanning Field (IDA), Spokane (GEG), Boise Air Term. Gowen Fld (BOI), Jackson Hole (JAC)

Search flight deals

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 July 2025.
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 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $356	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights
Delta	PriceFrom $387	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
Southwest	PriceFrom $394	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest 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.