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

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

How many flights depart from Portland to Idaho on average per day?

As of November 2025, there are 18 flights per day flying from Portland to Idaho. The most common time of day flights depart is 7:00AM, with 44% of flights taking off at noon.

What airlines fly to Idaho?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Idaho from Portland according to our data. Alaska Airlines is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 4 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

How many flights depart from Portland to Idaho on average per week?

The number of flights available between Portland and Idaho is 131 per week as of November 2025. The most frequent departure day is Wed, with 18% of weekly flights leaving on this day.

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

Prices for flights from Portland Airport to Idaho are refreshed on a daily basis.

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

As of November 2025, there are 5 operators available to choose from for flights from Portland Airport to Idaho.

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 travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$69 Cheap Flights from Portland to Idaho in 2025/26

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Cheap round-trip flights

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12:01 pm - 2:36 pmPDX-IDA

1h 35mnonstop

3:26 pm - 4:11 pmIDA-PDX

1h 45mnonstop

$105Allegiant Air

Find Deal

Fri, Dec 5 - Mon, Dec 8

1:01 pm - 3:36 pmPDX-IDA

1h 35mnonstop

1:26 pm - 2:11 pmIDA-PDX

1h 45mnonstop

$120Allegiant Air

Find Deal

Fri, Dec 19 - Mon, Jan 5

7:30 am - 8:37 amPDX-GEG

1h 07mnonstop

12:34 pm - 1:57 pmGEG-PDX

1h 23mnonstop

$136Alaska Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

5:35 pm - 6:45 pmPDX-GEG

1h 10mnonstop

12:34 pm - 1:57 pmGEG-PDX

1h 23mnonstop

$137Alaska Airlines

Find Deal

Sat, Dec 13 - Wed, Dec 17

7:30 am - 8:37 amPDX-GEG

1h 07mnonstop

12:34 pm - 1:57 pmGEG-PDX

1h 23mnonstop

$141Hawaiian Airlines

Find Deal

Sat, Dec 6 - Mon, Dec 8

5:30 am - 8:33 amPDX-GEG

3h 03m1 stop

6:05 am - 10:55 amGEG-PDX

4h 50m1 stop

$147Delta

Find Deal

Fri, Dec 5 - Sun, Dec 7

5:30 am - 10:39 amPDX-GEG

5h 09m1 stop

7:36 pm - 12:16 amGEG-PDX

4h 40m1 stop

$167Delta

Find Deal

Fri, Dec 5 - Fri, Dec 5

12:01 pm - 2:36 pmPDX-IDA

1h 35mnonstop

4:39 pm - 8:36 amIDA-PDX

16h 57m1 stop

$184Multiple Airlines

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Fri, Dec 12 - Sun, Dec 14

5:49 pm - 11:59 pmPDX-IDA

5h 10m1 stop

3:26 pm - 4:11 pmIDA-PDX

1h 45mnonstop

$197Multiple Airlines

Find Deal

Thu, Dec 11 - Mon, Dec 15

10:40 am - 3:26 pmPDX-BOI

3h 46m1 stop

8:16 pm - 8:48 pmBOI-PDX

1h 32mnonstop

$282Hawaiian Airlines

Find Deal

Sat, Dec 6 - Sun, Dec 7

Southwest flights from Portland to Idaho

Our best Southwest deals on Portland to Idaho flight tickets

Southwest

Jan 7

PDX12:30 pmPortland

9h 10m

1 stop

GEG9:40 pmSpokane

Jan 11

GEG4:50 pmSpokane

5h 15m

1 stop

PDX10:05 pmPortland

$210

Find similar

Southwest

Jan 1

PDX5:00 amPortland

5h 25m

1 stop

BOI11:25 amBoise Air Term. Gowen Fld

Jan 8

BOI6:05 amBoise Air Term. Gowen Fld

8h 20m

2 stops

PDX1:25 pmPortland

$219

Find similar

Southwest

Dec 13

PDX6:40 amPortland

5h 15m

1 stop

BOI12:55 pmBoise Air Term. Gowen Fld

Dec 16

BOI6:10 amBoise Air Term. Gowen Fld

8h 20m

2 stops

PDX1:30 pmPortland

$239

Find similar

Alaska Airlines flights from Portland to Idaho

Our best Alaska Airlines deals on Portland to Idaho flight tickets

Alaska Airlines

Dec 2

PDX7:30 amPortland

1h 07m

GEG8:37 amSpokane

Dec 9

GEG12:34 pmSpokane

1h 23m

PDX1:57 pmPortland

$136

Find similar

Alaska Airlines

Dec 13

PDX5:35 pmPortland

1h 10m

GEG6:45 pmSpokane

Dec 17

GEG12:34 pmSpokane

1h 23m

PDX1:57 pmPortland

$137

Find similar

Alaska Airlines

Dec 2

PDX7:30 amPortland

1h 07m

GEG8:37 amSpokane

Dec 9

GEG5:51 amSpokane

4h 59m

1 stop

PDX10:50 amPortland

$142

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/5

12:01 pm-2:36 pm

Nonstop1h 35m

Idaho Falls Fanning Field

Mon 12/8

3:26 pm-4:11 pm

Nonstop1h 45m

$105

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/19

1:01 pm-3:36 pm

Nonstop1h 35m

Idaho Falls Fanning Field

Mon 1/5

1:26 pm-2:11 pm

Nonstop1h 45m

$120

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Tue 12/2

7:30 am-8:37 am

Nonstop1h 07m

Spokane

Tue 12/9

12:34 pm-1:57 pm

Nonstop1h 23m

$136

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Sat 12/13

5:35 pm-6:45 pm

Nonstop1h 10m

Spokane

Wed 12/17

12:34 pm-1:57 pm

Nonstop1h 23m

$137

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Sat 12/6

7:30 am-8:37 am

Nonstop1h 07m

Spokane

Mon 12/8

12:34 pm-1:57 pm

Nonstop1h 23m

$141

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Fri 12/5

5:30 am-8:33 am

1 stop3h 03m

Spokane

Sun 12/7

6:05 am-10:55 am

1 stop4h 50m

$147

PortlandSpokane

PDX - GEG

PDXGEG

Portland

Fri 12/5

5:30 am-10:39 am

1 stop5h 09m

Spokane

Fri 12/5

7:36 pm-12:16 am

1 stop4h 40m

$167

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 12/12

12:01 pm-2:36 pm

Nonstop1h 35m

Idaho Falls Fanning Field

Sun 12/14

4:39 pm-8:36 am

1 stop16h 57m

$184

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 12/11

5:49 pm-11:59 pm

1 stop5h 10m

Idaho Falls Fanning Field

Mon 12/15

3:26 pm-4:11 pm

Nonstop1h 45m

$197

PortlandBoise

PDX - BOI

PDXBOI

Portland

Sat 12/6

10:40 am-3:26 pm

1 stop3h 46m

Boise Air Term. Gowen Fld

Sun 12/7

8:16 pm-8:48 pm

Nonstop1h 32m

$282

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland 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

Other information

What is the cheapest month to fly to Idaho?

In general, September is the cheapest month to fly from Portland to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $217. If you don’t want to visit Idaho in September, then you should wait until April to fly from Portland, when ticket prices are also cheap, with an average price of $218.

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

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $246. On the other hand, Sunday is the most expensive day to depart from Portland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $317.

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 to Idaho at noon for as low as $277. 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 $308 per ticket.

What is the cheapest Portland to Idaho flight route?

Fly from Portland to Idaho Falls Fanning Field for the best Portland - Idaho flight prices

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $269 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Portland for as low as $196 on momondo.

What cabin class options are available on Portland to Idaho flights?

There are 3 cabin classes available to choose from on Portland to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland to Idaho flights?

No. A direct flight is the cheapest option for a flight between Portland to Idaho.

Cheap Portland to Idaho flight deals and tips

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

Best Price Found	$169
Fastest flight time	1h 00m
Direct flights	Every day
Airports in Idaho	2 airports

The best one-way flight to Idaho from Portland in the past 72 hours is $169. The best round-trip flight deal from Portland to Idaho found on momondo in the last 72 hours is $218.

The fastest flight from Portland to Idaho takes 1h 00m

Direct flights go from Portland to Idaho every day.

There are 2 airports near Idaho: Spokane (GEG), Boise Air Term. Gowen Fld (BOI)

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 refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Idaho?
As of November 2025, there are 5 operators available to choose from for flights from Portland Airport to Idaho.
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 travel and health documents required for your trip to Idaho can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Idaho. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Portland to Idaho?
momondo data reveals that the most frequently booked plane model on the route from Portland to Idaho is Embraer 175, representing 33.43% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 21.29%, Boeing 737-900 Passenger/BBJ3 (winglets) at 18.74%, and Boeing 737 at 12.14%.

Best airlines flying from Portland to Idaho

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

Airline	Rating	Free Cancellation	Price
Allegiant Air	PriceFrom $56	Free Cancellation	Rating 7.2 697 reviews	Search Allegiant Air flights
Alaska Airlines	PriceFrom $137	Free Cancellation	Rating 8.0 11,245 reviews	Search Alaska Airlines flights
Hawaiian Airlines	PriceFrom $150	Free Cancellation	Rating 7.8 2,804 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $166	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Idaho. Millions of users trust and use momondo every year so you are in good hands.

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 provides multiple filters to help you find the best flight to Idaho from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Portland to Idaho flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Idaho trip

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Find better results for your trip to Idaho

Popular cities in Idaho

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Cheap flights from Portland to Idaho from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Idaho departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Portland to Idaho

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Southwest flights from Portland to Idaho

Our best Southwest deals on Portland to Idaho flight tickets

Alaska Airlines flights from Portland to Idaho

Our best Alaska Airlines deals on Portland to Idaho flight tickets

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How to get the cheapest flight ticket from Portland 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

What is the cheapest month to fly to Idaho?

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

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

What is the cheapest Portland to Idaho flight route?

Fly from Portland to Idaho Falls Fanning Field for the best Portland - Idaho flight prices

How far in advance should I book a flight to Idaho?

What cabin class options are available on Portland to Idaho flights?

There are 3 cabin classes available to choose from on Portland to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portland to Idaho flights?

No. A direct flight is the cheapest option for a flight between Portland to Idaho.

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

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

What airlines fly to Idaho?

How many flights depart from Portland to Idaho on average per day?

As of November 2025, there are 18 flights per day flying from Portland to Idaho. The most common time of day flights depart is 7:00AM, with 44% of flights taking off at noon.

How many flights depart from Portland to Idaho on average per week?

The number of flights available between Portland and Idaho is 131 per week as of November 2025. The most frequent departure day is Wed, with 18% of weekly flights leaving on this day.

Cheap Portland to Idaho flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Idaho

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

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

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

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

What is the most popular plane model from Portland to Idaho?

Best airlines flying from Portland to Idaho

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

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Idaho trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Idaho

Popular cities in Idaho

Popular flights according to clicks in the last 7 days on momondo