$136+ 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 12/12. 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
14 Dec — 21 Dec1
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 14 November 2025.

Good round-trip deal

$2,571 or less

Good one-way deal

$133 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 14 November 2025.

Mon 9/307:30BOI - AUS
1 stop9h 05mDelta
Tue 10/311:50AUS - BOI
1 stop9h 23mDelta
Deal found 11/11$301
Sat 13/1213:54BOI - AUS
1 stop8h 57mDelta
Mon 19/113:59AUS - BOI
1 stop9h 19mDelta
Deal found 12/11$372
Wed 31/1212:05BOI - AUS
1 stop6h 25mSouthwest
Sun 4/118:40AUS - BOI
1 stop7h 45mSouthwest
Deal found 13/11$378
Tue 9/1208:05BOI - AUS
2 stops9h 05mSouthwest
Fri 12/1205:30AUS - BOI
1 stop6h 25mSouthwest
Deal found 13/11$385
Tue 3/306:30GEG - LGA
1 stop9h 29mDelta
Wed 4/306:00LGA - GEG
1 stop10h 10mDelta
Deal found 12/11$395
Fri 12/1209:00BOI - AUS
2 stops11h 33mDelta
Mon 15/1212:06AUS - BOI
1 stop9h 14mDelta
Deal found 12/11$407
Tue 3/305:40BOI - AUS
2 stops11h 20mAlaska Airlines
Sat 7/315:36AUS - BOI
1 stop8h 04mAlaska Airlines
Deal found 12/11$426
Sun 1/307:00GEG - LGA
1 stop7h 13mUnited Airlines
Tue 3/308:10LGA - GEG
2 stops10h 06mUnited Airlines
Deal found 12/11$449
Tue 3/307:05GEG - EWR
1 stop8h 23mHawaiian Airlines
Wed 4/317:30EWR - GEG
1 stop9h 29mHawaiian Airlines
Deal found 11/11$455
Wed 31/1214:30BOI - AUS
1 stop7h 45mSouthwest
Thu 1/105:35AUS - BOI
1 stop6h 50mSouthwest
Deal found 11/11$456
Wed 3/1216:35GEG - EWR
1 stop9h 39mDelta
Sat 13/1206:00EWR - GEG
1 stop9h 02mDelta
Deal found 12/11$456
Sat 7/205:45GEG - EWR
1 stop9h 39mAlaska Airlines
Tue 10/218:08EWR - GEG
1 stop9h 15mAlaska Airlines
Deal found 12/11$458

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 14 November 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

Tue 9/12

09:00-17:50

1 stop7h 50m

Austin Bergstrom

Fri 12/12

18:05-00:04

1 stop6h 59m

$301

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 3/3

20:20-16:45

1 stop19h 25m

Austin Bergstrom

Sat 7/3

07:15-14:58

1 stop8h 43m

$301

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Fri 12/12

05:20-13:32

1 stop7h 12m

Austin Bergstrom

Mon 15/12

12:06-18:51

1 stop7h 45m

$301

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Mon 9/3

07:30-17:35

1 stop9h 05m

Austin Bergstrom

Tue 10/3

11:50-20:13

1 stop9h 23m

$301

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 13/12

13:54-23:51

1 stop8h 57m

Austin Bergstrom

Mon 19/1

13:59-22:18

1 stop9h 19m

$372

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 9/12

08:05-18:10

2 stops9h 05m

Austin Bergstrom

Fri 12/12

05:30-10:55

1 stop6h 25m

$385

SpokaneNew York

GEG - LGA

GEGLGA

Spokane

Sat 6/12

13:11-23:40

1 stop7h 29m

New York LaGuardia

Sat 13/12

06:00-12:02

1 stop9h 02m

$395

SpokaneNew York

GEG - LGA

GEGLGA

Spokane

Tue 3/3

06:30-18:59

1 stop9h 29m

New York LaGuardia

Wed 4/3

06:00-13:10

1 stop10h 10m

$395

SpokaneNewark

GEG - EWR

GEGEWR

Spokane

Tue 3/3

07:05-18:28

1 stop8h 23m

Newark

Wed 4/3

17:30-23:59

1 stop9h 29m

$455

SpokaneNewark

GEG - EWR

GEGEWR

Spokane

Wed 3/12

16:35-05:14

1 stop9h 39m

Newark

Sat 13/12

06:00-12:02

1 stop9h 02m

$456

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 60 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 $175). Flying from Idaho in March will prove the most costly (average of $418). 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 $133. Explore other affordable destinations below.

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $133
Salt Lake City
Salt Lake City
From $2,522

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Direct flights from USA

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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 14 November 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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