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 31% 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.

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

Delta and Southwest are the most popular carriers operating from Portland 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 2 operators available for flights from Portland Airport to Idaho as of November 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.

$185 Cheap Flights from Portland, Maine to Idaho in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

6:00 am - 1:44 pmPWM Portland-BOI Boise Air Term. Gowen Fld

9h 44m1 stop Atlanta Hartsfield-Jackson

1:47 pm - 11:52 pmBOI Boise Air Term. Gowen Fld-PWM Portland

8h 05m1 stop Atlanta Hartsfield-Jackson

$418Delta

Wed, Dec 9 - Fri, Dec 11

12:34 pm - 11:02 pmPWM Portland-IDA Idaho Falls Fanning Field

12h 28m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

5:35 pm - 10:30 amIDA Idaho Falls Fanning Field-PWM Portland

14h 55m2 stops Phoenix Sky Harbor Intl Philadelphia

$419American Airlines

Sat, Dec 5 - Sat, Dec 12

12:34 pm - 11:02 pmPWM Portland-IDA Idaho Falls Fanning Field

12h 28m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

5:35 pm - 10:30 amIDA Idaho Falls Fanning Field-PWM Portland

14h 55m2 stops Phoenix Sky Harbor Intl Philadelphia

$419American Airlines

Sat, Dec 5 - Mon, Dec 14

4:53 pm - 12:26 amPWM Portland-BOI Boise Air Term. Gowen Fld

9h 33m2 stops Detroit Metropolitan Wayne County Salt Lake City

1:47 pm - 11:52 pmBOI Boise Air Term. Gowen Fld-PWM Portland

8h 05m1 stop Atlanta Hartsfield-Jackson

$423Delta

Wed, Dec 9 - Fri, Dec 11

12:45 pm - 10:35 pmPWM Portland-BOI Boise Air Term. Gowen Fld

11h 50m2 stops Baltimore/Washington Denver Intl

10:15 am - 11:55 pmBOI Boise Air Term. Gowen Fld-PWM Portland

11h 40m2 stops San Jose Baltimore/Washington

$428Southwest

Wed, Dec 9 - Fri, Dec 11

6:00 am - 4:04 pmPWM Portland-BOI Boise Air Term. Gowen Fld

12h 04m2 stops Philadelphia Phoenix Sky Harbor Intl

6:38 pm - 10:19 amBOI Boise Air Term. Gowen Fld-PWM Portland

13h 41m2 stops Phoenix Sky Harbor Intl Philadelphia

$429American Airlines

Wed, Jan 20 - Fri, Jan 22

4:47 pm - 10:59 pmPWM Portland-BOI Boise Air Term. Gowen Fld

8h 12m1 stop Chicago O'Hare Intl

11:49 am - 9:29 pmBOI Boise Air Term. Gowen Fld-PWM Portland

7h 40m1 stop Chicago O'Hare Intl

$499United Airlines

Sat, Dec 12 - Mon, Dec 14

4:47 pm - 10:59 pmPWM Portland-BOI Boise Air Term. Gowen Fld

8h 12m1 stop Chicago O'Hare Intl

11:49 am - 11:24 pmBOI Boise Air Term. Gowen Fld-PWM Portland

9h 35m2 stops Chicago O'Hare Intl Newark

$504United Airlines

Sat, Dec 12 - Mon, Dec 14

9:38 am - 9:27 pmPWM Portland-BOI Boise Air Term. Gowen Fld

13h 49m2 stops Washington, D.C. Dulles Intl Denver Intl

11:49 am - 9:29 pmBOI Boise Air Term. Gowen Fld-PWM Portland

7h 40m1 stop Chicago O'Hare Intl

$543United Airlines

Sat, Dec 12 - Mon, Dec 14

12:45 pm - 10:35 pmPWM Portland-BOI Boise Air Term. Gowen Fld

11h 50m2 stops Baltimore/Washington Denver Intl

6:10 pm - 9:50 amBOI Boise Air Term. Gowen Fld-PWM Portland

13h 40m2 stops Phoenix Sky Harbor Intl Baltimore/Washington

$567Southwest

Thu, Dec 24 - Mon, Dec 28

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

United Airlines flights from Portland, Maine to Idaho

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

United Airlines

Dec 12

PWM4:47 pmPortland

8h 12m

1 stop

BOI10:59 pmBoise Air Term. Gowen Fld

Dec 14

BOI11:49 amBoise Air Term. Gowen Fld

7h 40m

1 stop

PWM9:29 pmPortland

$499

United Airlines

Dec 12

PWM4:47 pmPortland

8h 12m

1 stop

BOI10:59 pmBoise Air Term. Gowen Fld

Dec 14

BOI11:49 amBoise Air Term. Gowen Fld

9h 35m

2 stops

PWM11:24 pmPortland

$504

United Airlines

Dec 12

PWM9:38 amPortland

13h 49m

2 stops

BOI9:27 pmBoise Air Term. Gowen Fld

Dec 14

BOI11:49 amBoise Air Term. Gowen Fld

7h 40m

1 stop

PWM9:29 pmPortland

$543

Southwest flights from Portland, Maine to Idaho

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

Southwest

Dec 9

PWM12:45 pmPortland

11h 50m

2 stops

BOI10:35 pmBoise Air Term. Gowen Fld

Dec 11

BOI10:15 amBoise Air Term. Gowen Fld

11h 40m

2 stops

PWM11:55 pmPortland

$428

Southwest

Dec 24

PWM12:45 pmPortland

11h 50m

2 stops

BOI10:35 pmBoise Air Term. Gowen Fld

Dec 28

BOI6:10 pmBoise Air Term. Gowen Fld

13h 40m

2 stops

PWM9:50 amPortland

$567

Southwest

Nov 20

PWM5:20 amPortland

12h 45m

2 stops

BOI4:05 pmBoise Air Term. Gowen Fld

Nov 24

BOI12:05 pmBoise Air Term. Gowen Fld

9h 50m

2 stops

PWM11:55 pmPortland

$657

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Wed 12/9

6:00 am-1:44 pm

1 stop9h 44m

Boise Air Term. Gowen Fld

Fri 12/11

1:47 pm-11:52 pm

1 stop8h 05m

$418

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Sat 12/5

12:34 pm-11:02 pm

2 stops12h 28m

Idaho Falls Fanning Field

Sat 12/12

5:35 pm-10:30 am

2 stops14h 55m

$419

PortlandIdaho Falls

PWM Portland - IDA Idaho Falls Fanning Field

PWMIDA

Portland

Sat 12/5

12:34 pm-11:02 pm

2 stops12h 28m

Idaho Falls Fanning Field

Mon 12/14

5:35 pm-10:30 am

2 stops14h 55m

$419

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Wed 12/9

4:53 pm-12:26 am

2 stops9h 33m

Boise Air Term. Gowen Fld

Fri 12/11

1:47 pm-11:52 pm

1 stop8h 05m

$423

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Wed 12/9

12:45 pm-10:35 pm

2 stops11h 50m

Boise Air Term. Gowen Fld

Fri 12/11

10:15 am-11:55 pm

2 stops11h 40m

$428

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Wed 1/20

6:00 am-4:04 pm

2 stops12h 04m

Boise Air Term. Gowen Fld

Fri 1/22

6:38 pm-10:19 am

2 stops13h 41m

$429

Quickest round-trip

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Sat 12/12

4:47 pm-10:59 pm

1 stop8h 12m

Boise Air Term. Gowen Fld

Mon 12/14

11:49 am-9:29 pm

1 stop7h 40m

$499

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Sat 12/12

4:47 pm-10:59 pm

1 stop8h 12m

Boise Air Term. Gowen Fld

Mon 12/14

11:49 am-11:24 pm

2 stops9h 35m

$504

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Sat 12/12

9:38 am-9:27 pm

2 stops13h 49m

Boise Air Term. Gowen Fld

Mon 12/14

11:49 am-9:29 pm

1 stop7h 40m

$543

PortlandBoise

PWM Portland - BOI Boise Air Term. Gowen Fld

PWMBOI

Portland

Thu 12/24

12:45 pm-10:35 pm

2 stops11h 50m

Boise Air Term. Gowen Fld

Mon 12/28

6:10 pm-9:50 am

2 stops13h 40m

$567

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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, December 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 December, then you should wait until February to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $0.

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

You could potentially save up to 15% 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	$185
Fastest flight time	7h 34m
Direct flights	None

The best one-way flight to Idaho from Portland, Maine in the past 72 hours is $185. The best round-trip flight deal from Portland, Maine to Idaho found on momondo in the last 72 hours is $418.

The fastest flight from Portland, Maine to Idaho takes 7h 34m

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 2 operators available for flights from Portland Airport to Idaho as of November 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
United Airlines	PriceFrom $408	Free Cancellation	Rating 7.3 10,469 reviews		Search United Airlines flights
American Airlines	PriceFrom $424	Free Cancellation	Rating 7.0 12,228 reviews		Search American 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.