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Idaho

$182+ Cheap flights from Portland, ME (PWM) to Idaho

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — BOI
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap flight deals from Portland to Idaho

Cheapest flights from Portland to Idaho
Explore the most affordable flight options available from Portland to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 am
PWM
-
BOI
1 stop9h 33m
Delta
Tue 10/271:40 pm
BOI
-
PWM
1 stop7h 55m
Delta
Deal found 7/26$369
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:00 am
PWM
-
BOI
1 stop7h 26m
United Airlines
Wed 9/237:05 pm
BOI
-
PWM
2 stops12h 03m
United Airlines
Deal found 7/26$374
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:40 am
PWM
-
BOI
2 stops11h 05m
Southwest
Wed 10/2811:20 am
BOI
-
PWM
2 stops9h 15m
Southwest
Deal found 7/26$379
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:05 am
PWM
-
BOI
1 stop8h 44m
Delta
Mon 9/2111:10 pm
BOI
-
PWM
2 stops12h 06m
Delta
Deal found 7/25$384
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:30 am
PWM
-
BOI
2 stops13h 19m
American Airlines
Mon 8/318:01 am
BOI
-
PWM
2 stops12h 47m
American Airlines
Deal found 7/25$386
This Southwest deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:05 pm
PWM
-
BOI
2 stops11h 50m
Southwest
Thu 10/297:55 am
BOI
-
PWM
2 stops11h 55m
Southwest
Deal found 7/26$390
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:01 am
PWM
-
BOI
1 stop9h 33m
Delta
Tue 10/271:40 pm
BOI
-
PWM
1 stop7h 55m
Delta
Deal found 7/26$394
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:15 am
PWM
-
BOI
2 stops12h 16m
United Airlines
Mon 8/3112:24 pm
BOI
-
PWM
1 stop6h 59m
United Airlines
Deal found 7/25$397
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:09 pm
PWM
-
BOI
1 stop9h 48m
Delta
Tue 10/271:40 pm
BOI
-
PWM
1 stop7h 55m
Delta
Deal found 7/26$402
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:40 pm
PWM
-
GEG
1 stop8h 09m
United Airlines
Sat 10/315:00 am
GEG
-
PWM
1 stop8h 02m
United Airlines
Deal found 7/28$402
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:01 am
PWM
-
GEG
1 stop8h 49m
Delta
Fri 10/301:00 pm
GEG
-
PWM
1 stop7h 35m
Delta
Deal found 7/28$404
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:00 am
PWM
-
GEG
1 stop9h 21m
American Airlines
Tue 10/276:30 am
GEG
-
PWM
2 stops14h 10m
American Airlines
Deal found 7/26$405

Find flight deals from Portland to Idaho

Keep the following information in mind while searching for Portland to Idaho flight deals. Data was last updated July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(Delta)

One-way from

$182
(American Airlines)

Popular in

October

Cheapest in

January

Average price

$631
Provider with most accurate pricing for Portland-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Boise Air Term. Gowen Fld flights.
Search Deals
From Portland to Idaho
Search Deals
One-way flight from Portland to Idaho
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Idaho that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
Use the filters below to find and compare flights from Portland to Idaho that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 9/5

6:05 am-12:49 pm

1 stop8h 44m

Boise Air Term. Gowen Fld

Mon 9/21

11:10 pm-1:16 pm

2 stops12h 06m

$384

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/22

1:05 pm-10:55 pm

2 stops11h 50m

Boise Air Term. Gowen Fld

Mon 11/2

8:30 pm-9:55 am

2 stops11h 25m

$384

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Fri 10/23

3:40 pm-8:49 pm

1 stop8h 09m

Spokane

Sat 10/31

5:00 am-4:02 pm

1 stop8h 02m

$402

PortlandBoise

PWM - BOI

PWMBOI

Portland

Fri 9/18

6:00 am-1:01 pm

1 stop9h 01m

Boise Air Term. Gowen Fld

Mon 9/21

11:10 pm-1:16 pm

2 stops12h 06m

$438

PortlandBoise

PWM - BOI

PWMBOI

Portland

Sat 9/5

6:05 am-5:52 pm

2 stops13h 47m

Boise Air Term. Gowen Fld

Mon 9/7

11:10 pm-10:55 am

2 stops9h 45m

$444

PortlandBoise

PWM - BOI

PWMBOI

Portland

Wed 9/9

3:37 pm-9:45 pm

1 stop8h 08m

Boise Air Term. Gowen Fld

Wed 9/23

12:28 pm-9:23 pm

1 stop6h 55m

$451

PortlandBoise

PWM - BOI

PWMBOI

Portland

Tue 11/3

3:23 pm-9:32 pm

1 stop8h 09m

Boise Air Term. Gowen Fld

Sat 11/7

12:37 pm-9:51 pm

1 stop7h 14m

$473

PortlandBoise

PWM - BOI

PWMBOI

Portland

Thu 10/22

6:00 am-11:28 am

1 stop7h 28m

Boise Air Term. Gowen Fld

Wed 11/4

6:30 am-4:02 pm

1 stop7h 32m

$479

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Tue 10/27

9:46 am-9:11 pm

2 stops14h 25m

Spokane

Sat 10/31

5:00 am-7:02 pm

2 stops11h 02m

$483
Quickest round-trip

PortlandIdaho Falls

PWM - IDA

PWMIDA

Portland

Tue 11/10

3:23 pm-9:09 pm

1 stop7h 46m

Idaho Falls Fanning Field

Sat 11/14

7:00 am-4:02 pm

1 stop7h 02m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 47 resultsSorted by cheapest first
1
2
3
...
5

Best time to book a flight from Portland to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Idaho

How much does it cost to fly round-trip from Portland, Maine to Idaho?

Airfare is typical for this route at the moment.
Portland, Maine to Idaho flights typically cost between $365 and $444 in October.
The cheapest round-trip price found within the last 5 days was $369 on Delta (Oct 24-Oct 27).

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho. Reviews last updated July 28, 2026.
See what other customers who have flown with United Airlines and American Airlines from Portland to Idaho have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,046 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,046 reviews
United Airlines
7.4
Good
10,046 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
American Airlines
7.1
Good
11,839 reviews
United Airlines
7.4
Good
10,046 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

Related info for your journey

Find useful and relevant information for your journey from Portland to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Idaho?

    If you book a flight to Idaho from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland.

  • How long is the flight from Portland, Maine to Idaho?

    There are many flights that can get you from Portland, Maine to Idaho in 7h 26m. Fly via Delta, United Airlines, or Southwest to get the fastest option. The distance between Portland, Maine and Idaho is about 2265 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Portland, Maine to Idaho?

    The most popular flight routes from Portland, Maine to Idaho are Portland - Boise Air Term. Gowen Fld, Portland - Jackson Hole and Portland - Spokane.

  • Can I find deals for flights from Portland to Idaho that include hotel bookings?

    Yes. In addition to deals on Portland to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Idaho.

  • Can I find deals for business class flights from Portland to Idaho?

    Yes. Cheapflights offers flight deals from Portland to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Top 2 airlines flying from Portland to Idaho

Discover the top 2 airlines that operate flights from Portland to Idaho. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$372Average$535FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$485Average$582FlexibilityNo cancel feeOn-time69%

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