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

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

What airlines fly to Idaho?

Delta, United Airlines and American 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 46% 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 September 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.

$189 Cheap Flights from Portland to Idaho in 2025/26

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Find the cheapest flights from Portland, Maine to Idaho

Round-trip

One-way

Last minute

Cheap round-trip flights

6:00 am - 12:29 pmPWM-BOI

8h 29m1 stop

4:46 pm - 4:03 pmBOI-PWM

21h 17m2 stops

$347Delta

Find Deal

Sat, Oct 25 - Tue, Oct 28

6:00 am - 4:48 pmPWM-JAC

12h 48m2 stops

1:00 pm - 12:05 amJAC-PWM

33h 05m2 stops

$371Delta

Find Deal

Sat, Nov 1 - Tue, Nov 4

6:00 am - 12:29 pmPWM-BOI

8h 29m1 stop

4:46 pm - 12:22 pmBOI-PWM

17h 36m2 stops

$378Delta

Find Deal

Sat, Oct 25 - Tue, Oct 28

6:50 am - 12:08 amPWM-BOI

19h 18m2 stops

2:00 pm - 12:00 pmBOI-PWM

20h 00m2 stops

$384Delta

Find Deal

Sat, Oct 25 - Tue, Oct 28

6:14 am - 12:29 pmPWM-JAC

8h 15m1 stop

1:06 pm - 5:05 pmJAC-PWM

25h 59m2 stops

$404American Airlines

Find Deal

Wed, Oct 29 - Tue, Nov 4

1:05 pm - 11:22 amPWM-JAC

24h 17m2 stops

1:06 pm - 11:46 amJAC-PWM

20h 40m2 stops

$417American Airlines

Find Deal

Wed, Oct 29 - Tue, Nov 4

3:20 pm - 8:37 pmPWM-JAC

7h 17m1 stop

7:00 am - 3:48 pmJAC-PWM

6h 48m1 stop

$424United Airlines

Find Deal

Thu, Nov 6 - Thu, Nov 13

3:20 pm - 8:37 pmPWM-JAC

7h 17m1 stop

7:00 am - 3:48 pmJAC-PWM

6h 48m1 stop

$429United Airlines

Find Deal

Sat, Nov 1 - Tue, Nov 4

5:30 am - 3:05 pmPWM-BOI

11h 35m2 stops

5:40 pm - 11:10 amBOI-PWM

15h 30m2 stops

$442Southwest

Find Deal

Mon, Nov 3 - Thu, Nov 6

5:30 am - 3:05 pmPWM-BOI

11h 35m2 stops

11:30 am - 12:20 amBOI-PWM

10h 50m2 stops

$473Southwest

Find Deal

Mon, Nov 3 - Fri, Nov 7

American Airlines flights from Portland, Maine to Idaho

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

American Airlines

Oct 29

PWM6:14 amPortland

8h 15m

1 stop

JAC12:29 pmJackson Hole

Nov 4

JAC1:06 pmJackson Hole

25h 59m

2 stops

PWM5:05 pmPortland

$404

Find similar

American Airlines

Oct 29

PWM1:05 pmPortland

24h 17m

2 stops

JAC11:22 amJackson Hole

Nov 4

JAC1:06 pmJackson Hole

20h 40m

2 stops

PWM11:46 amPortland

$417

Find similar

American Airlines

Oct 25

PWM6:19 amPortland

8h 27m

1 stop

BOI12:46 pmBoise Air Term. Gowen Fld

Oct 28

BOI1:26 pmBoise Air Term. Gowen Fld

7h 19m

1 stop

PWM10:45 pmPortland

$457

Find similar

Delta flights from Portland, Maine to Idaho

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

Delta

Oct 25

PWM6:00 amPortland

8h 29m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Oct 28

BOI4:46 pmBoise Air Term. Gowen Fld

21h 17m

2 stops

PWM4:03 pmPortland

$347

Find similar

Delta

Nov 1

PWM6:00 amPortland

12h 48m

2 stops

JAC4:48 pmJackson Hole

Nov 4

JAC1:00 pmJackson Hole

33h 05m

2 stops

PWM12:05 amPortland

$371

Find similar

Delta

Oct 25

PWM6:00 amPortland

8h 29m

1 stop

BOI12:29 pmBoise Air Term. Gowen Fld

Oct 28

BOI4:46 pmBoise Air Term. Gowen Fld

17h 36m

2 stops

PWM12:22 pmPortland

$378

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 10/25

6:00 am-12:29 pm

1 stop8h 29m

Boise Air Term. Gowen Fld

Tue 10/28

4:46 pm-4:03 pm

2 stops21h 17m

$347

PortlandJackson

PWM - JAC

PWMJAC

Portland

Sat 11/1

6:00 am-4:48 pm

2 stops12h 48m

Jackson Hole

Tue 11/4

1:00 pm-12:05 am

2 stops33h 05m

$371

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 10/25

6:00 am-12:29 pm

1 stop8h 29m

Boise Air Term. Gowen Fld

Tue 10/28

4:46 pm-12:22 pm

2 stops17h 36m

$378

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 10/25

6:50 am-12:08 am

2 stops19h 18m

Boise Air Term. Gowen Fld

Tue 10/28

2:00 pm-12:00 pm

2 stops20h 00m

$384

PortlandJackson

PWM - JAC

PWMJAC

Portland

Wed 10/29

6:14 am-12:29 pm

1 stop8h 15m

Jackson Hole

Tue 11/4

1:06 pm-5:05 pm

2 stops25h 59m

$404

PortlandJackson

PWM - JAC

PWMJAC

Portland

Wed 10/29

1:05 pm-11:22 am

2 stops24h 17m

Jackson Hole

Tue 11/4

1:06 pm-11:46 am

2 stops20h 40m

$417

PortlandJackson

PWM - JAC

PWMJAC

Portland

Thu 11/6

3:20 pm-8:37 pm

1 stop7h 17m

Jackson Hole

Thu 11/13

7:00 am-3:48 pm

1 stop6h 48m

$424

PortlandJackson

PWM - JAC

PWMJAC

Portland

Sat 11/1

3:20 pm-8:37 pm

1 stop7h 17m

Jackson Hole

Tue 11/4

7:00 am-3:48 pm

1 stop6h 48m

$429

PortlandBoise

PWM - BOI

PWMBOI

Portland

Mon 11/3

5:30 am-3:05 pm

2 stops11h 35m

Boise Air Term. Gowen Fld

Thu 11/6

5:40 pm-11:10 am

2 stops15h 30m

$442

PortlandBoise

PWM - BOI

PWMBOI

Portland

Mon 11/3

5:30 am-3:05 pm

2 stops11h 35m

Boise Air Term. Gowen Fld

Fri 11/7

11:30 am-12:20 am

2 stops10h 50m

$473

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, August 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 $430. If you don’t want to visit Idaho in August, then you should wait until September to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $452.

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 49% 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

Direct flights	None

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

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 September 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 8,926 reviews	Search United Airlines flights
Delta	PriceFrom $365	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
Southwest	PriceFrom $394	Free Cancellation	Rating 8.0 4,244 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.