$138+ Cheap flights from Idaho

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
BOI — PHL
21 déc. — 28 déc.1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Idaho

Discover essential information about flights departing from Idaho, including flight schedules, destinations, airlines operating at the Idaho airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 21 novembre 2025.

Good round-trip deal

$2,604 or less

Good one-way deal

$135 or less
Price to beat on a round-trip flight from Idaho.
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Price to beat on a one-way flight from Idaho.
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Find flights from Idaho

Enter your travel dates to find the best prices.

Cheapest flights from Idaho
Explore the most affordable flight options available from Idaho. Find the lowest fares based on data from user searches, with prices last updated on 21 novembre 2025.

sam. 13/1215:54BOI - AUS
1 stop7h 09mDelta
lun. 19/113:59AUS - BOI
1 stop9h 19mDelta
Deal found 19/11$375
sam. 13/1214:20BOI - AUS
1 stop6h 32mUnited Airlines
lun. 19/114:22AUS - BOI
2 stops8h 30mUnited Airlines
Deal found 19/11$383
mar. 9/1213:12GEG - EWR
1 stop8h 47mDelta
mar. 16/1206:00EWR - GEG
2 stops12h 40mDelta
Deal found 18/11$392
dim. 18/113:41BOI - AUS
1 stop9h 39mDelta
jeu. 22/106:15AUS - BOI
1 stop8h 19mDelta
Deal found 18/11$413
mar. 9/1213:25BOI - AUS
1 stop8h 00mSouthwest
lun. 15/1218:30AUS - BOI
1 stop5h 40mSouthwest
Deal found 19/11$417
ven. 12/1213:54BOI - AUS
1 stop8h 57mDelta
lun. 15/1214:05AUS - BOI
2 stops10h 59mDelta
Deal found 19/11$422
sam. 6/1206:00GEG - EWR
1 stop8h 59mDelta
sam. 13/1206:29EWR - GEG
1 stop8h 41mDelta
Deal found 18/11$425
jeu. 8/112:55GEG - EWR
1 stop9h 00mDelta
mer. 14/106:00EWR - GEG
1 stop8h 45mDelta
Deal found 19/11$430
mer. 3/1206:00GEG - EWR
2 stops10h 19mDelta
sam. 13/1206:29EWR - GEG
1 stop8h 41mDelta
Deal found 19/11$433
dim. 18/113:55BOI - AUS
1 stop9h 04mAlaska Airlines
jeu. 22/115:39AUS - BOI
1 stop9h 03mAlaska Airlines
Deal found 20/11$448
ven. 19/1211:40BOI - AUS
1 stop11h 30mSouthwest
dim. 4/118:40AUS - BOI
1 stop7h 45mSouthwest
Deal found 19/11$457
jeu. 15/105:40BOI - AUS
2 stops10h 55mDelta
dim. 18/107:20AUS - BOI
2 stops12h 08mDelta
Deal found 20/11$460

Find flights from Idaho within your budget

 
Find flights departing from Idaho that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 21 novembre 2025. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Philadelphia

Route

Depart

Return

Price

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

sam. 13/12

15:54-00:03

1 stop7h 09m

Austin Bergstrom

lun. 19/1

13:59-22:18

1 stop9h 19m

$375

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

lun. 15/12

14:49-22:59

2 stops7h 10m

Austin Bergstrom

mar. 16/12

16:47-21:25

1 stop5h 38m

$383

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

dim. 18/1

13:41-00:20

1 stop9h 39m

Austin Bergstrom

jeu. 22/1

06:15-13:34

1 stop8h 19m

$413

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

ven. 12/12

13:54-23:51

1 stop8h 57m

Austin Bergstrom

lun. 15/12

05:00-10:15

1 stop6h 15m

$413

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

ven. 16/1

13:55-17:59

1 stop27h 04m

Austin Bergstrom

dim. 25/1

07:15-23:01

1 stop16h 46m

$425

SpokaneNewark

GEG - EWR

GEGEWR

Spokane

sam. 6/12

06:00-17:59

1 stop8h 59m

Newark

sam. 13/12

06:29-12:10

1 stop8h 41m

$425

SpokaneNewark

GEG - EWR

GEGEWR

Spokane

jeu. 8/1

12:55-00:55

1 stop9h 00m

Newark

mer. 14/1

09:39-18:45

2 stops12h 06m

$437

SpokaneNewark

GEG - EWR

GEGEWR

Spokane

sam. 17/1

09:20-23:13

2 stops10h 53m

Newark

lun. 19/1

06:00-13:03

2 stops10h 03m

$445

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

dim. 18/1

13:55-23:59

1 stop9h 04m

Austin Bergstrom

jeu. 22/1

15:39-23:42

1 stop9h 03m

$448

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

ven. 27/2

13:46-00:34

2 stops9h 48m

Austin Bergstrom

dim. 1/3

06:10-13:06

1 stop7h 56m

$450

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 57 results
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Best time to book a flight from Idaho

Have a flexible travel schedule? Discover the best time to fly from Idaho with our price prediction graph.
Estimated return 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.

Travel insights for flights from Idaho

Get recent, data-driven insights about flights from Idaho including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Idaho?

Currently, September is the cheapest month in which you can book a flight from Idaho (average of $178). Flying from Idaho in March will prove the most costly (average of $423). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What is the cheapest place to fly to from Idaho?

The cheapest city to fly to from Idaho is Seattle/Tacoma Intl, with prices starting at $135. Explore other affordable destinations below.

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $135
Salt Lake City
Salt Lake City
From $2,554

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Direct flights from USA

Book a direct flight from one of these other cities located in USA.
Direct flights from Boise

Related info for your journey

Access useful and relevant information related to your journey from Idaho. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 21 novembre 2025.

  • What is the cheapest month to fly from Idaho?

    Currently, the cheapest month for flights from Idaho is September. The most expensive month for flights is March. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • How does Cheapflights help users find flights from Idaho?

    Cheapflights helps you search for flights from Idaho via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

  • Why should you use Cheapflights to find cheap flight tickets from Idaho?

    It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Idaho.

  • Can Cheapflights find flights from Idaho with no change fees?

    Cheapflights does show flights with no change fees to all users. To see these options for flights from Idaho, users can toggle the no change fees filter when performing a flight search.

  • Can Cheapflights notify me if prices for flights from Idaho become cheaper?

    Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from Idaho today and book when you’re ready!

See more FAQs

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Idaho?

Cheapflights helps you search for flights from Idaho via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Idaho?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Idaho.

Can Cheapflights find flights from Idaho with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Idaho, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Idaho become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which offers users the ability to be notified when flight prices change. Track prices for your flight from Idaho today and book when you’re ready!

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