$89+ 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 26/9. 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
7 Sep — 14 Sep1
1 adult

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 2 September 2025.

Good one-way deal

$133 or less
Price to beat on a one-way flight from Idaho.

Find flights from Idaho

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 2 September 2025.

Sat 1/1105:42BOI - AUS
1 stop8h 56mDelta
Wed 5/1118:12AUS - BOI
1 stop6h 42mDelta
Deal found 1/9$405
Thu 2/1014:44BOI - AUS
1 stop8h 15mUnited Airlines
Fri 3/1007:00AUS - BOI
1 stop9h 28mUnited Airlines
Deal found 31/8$408
Wed 5/1114:11BOI - AUS
1 stop6h 42mUnited Airlines
Wed 19/1112:15AUS - BOI
2 stops10h 01mUnited Airlines
Deal found 2/9$412
Tue 28/1005:51GEG - EWR
1 stop8h 15mHawaiian Airlines
Tue 4/1115:23EWR - GEG
1 stop10h 00mHawaiian Airlines
Deal found 30/8$412
Wed 1/1012:40GEG - EWR
1 stop9h 16mDelta
Wed 8/1014:24EWR - GEG
1 stop8h 22mDelta
Deal found 2/9$414
Tue 23/914:23GEG - LGA
1 stop6h 21mDelta
Wed 24/907:55LGA - GEG
1 stop8h 22mDelta
Deal found 31/8$414
Tue 23/919:25GEG - LGA
2 stops10h 21mDelta
Sat 27/918:05LGA - GEG
1 stop8h 53mDelta
Deal found 31/8$421
Fri 31/1008:50BOI - AUS
1 stop8h 28mAlaska Airlines
Sun 2/1108:30AUS - BOI
1 stop14h 38mAlaska Airlines
Deal found 31/8$426
Tue 23/919:25GEG - LGA
2 stops10h 21mDelta
Tue 30/916:59LGA - GEG
2 stops10h 04mDelta
Deal found 1/9$429
Thu 16/1017:40BOI - AUS
1 stop5h 25mSouthwest
Sun 19/1019:10AUS - BOI
1 stop7h 15mSouthwest
Deal found 1/9$430
Sat 1/1119:39GEG - EWR
1 stop8h 20mHawaiian Airlines
Sat 8/1117:30EWR - GEG
1 stop9h 52mHawaiian Airlines
Deal found 1/9$435
Sat 4/1019:34GEG - EWR
1 stop7h 25mAlaska Airlines
Tue 7/1009:00EWR - GEG
1 stop16h 36mAlaska Airlines
Deal found 1/9$437

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 2 September 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

Wed 5/11

05:15-13:45

1 stop7h 30m

Austin Bergstrom

Wed 19/11

08:05-15:05

1 stop8h 00m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 2/12

15:54-23:57

1 stop7h 03m

Austin Bergstrom

Mon 5/1

12:05-20:13

1 stop9h 08m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 2/12

05:17-13:32

1 stop7h 15m

Austin Bergstrom

Thu 4/12

05:00-10:15

1 stop6h 15m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 1/11

07:40-17:50

1 stop9h 10m

Austin Bergstrom

Thu 6/11

12:12-20:16

1 stop9h 04m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 1/11

13:00-20:56

1 stop6h 56m

Austin Bergstrom

Sat 8/11

16:31-22:52

1 stop7h 21m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 2/12

05:17-13:32

1 stop7h 15m

Austin Bergstrom

Tue 2/12

18:05-00:04

1 stop6h 59m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 1/11

15:00-22:55

1 stop6h 55m

Austin Bergstrom

Tue 4/11

18:04-00:08

1 stop7h 04m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Sat 1/11

05:42-15:38

1 stop8h 56m

Austin Bergstrom

Wed 5/11

18:12-23:54

1 stop6h 42m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Tue 2/12

15:54-23:57

1 stop7h 03m

Austin Bergstrom

Wed 3/12

06:05-13:14

1 stop8h 09m

$405

BoiseAustin

BOI - AUS

BOIAUS

Boise Air Term. Gowen Fld

Wed 3/12

05:35-13:00

1 stop6h 25m

Austin Bergstrom

Wed 3/12

18:05-00:04

1 stop6h 59m

$405

Flights are sorted by cheapest return flights first.

Deals found on 1/9

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 $186). Flying from Idaho in November will prove the most costly (average of $432). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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Direct flights from USA

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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 2 September 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 November. 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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