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Cheap flights from Idaho to Philadelphia from $101

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

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Find the cheapest flights from Idaho to Philadelphia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:44 pm - 2:39 pmBOI-PHL
23h 55m2 stops
Frontier Logo
8:36 pm - 11:59 amPHL-BOI
17h 23m1 stop
$213Frontier
Find Deal
Thu, Dec 11 - Fri, Dec 19
Multiple Airlines Logo
12:44 pm - 5:31 amBOI-PHL
14h 47m1 stop
Multiple Airlines Logo
5:30 am - 11:49 amPHL-BOI
32h 19m2 stops
$282Multiple Airlines
Find Deal
Sun, Dec 7 - Wed, Dec 10
Alaska Airlines Logo
8:47 pm - 5:46 amGEG-PHL
29h 59m1 stop
Alaska Airlines Logo
7:06 am - 11:14 pmPHL-GEG
19h 08m1 stop
$314Alaska Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Hawaiian Airlines Logo
6:03 am - 5:46 amBOI-PHL
21h 43m1 stop
Hawaiian Airlines Logo
6:54 pm - 12:45 pmPHL-BOI
19h 51m1 stop
$315Hawaiian Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 15
Delta Logo
11:19 am - 11:57 pmGEG-PHL
9h 38m2 stops
Delta Logo
5:17 pm - 12:11 amPHL-GEG
9h 54m2 stops
$326Delta
Find Deal
Thu, Dec 4 - Mon, Dec 8
Frontier Logo
12:48 pm - 4:45 amBOI-PHL
13h 57m1 stop
Frontier Logo
6:00 am - 11:53 amPHL-BOI
7h 53m1 stop
$327Frontier
Find Deal
Sun, Nov 23 - Tue, Nov 25
Alaska Airlines Logo
5:59 pm - 5:53 pmBOI-PHL
21h 54m1 stop
Alaska Airlines Logo
7:06 am - 10:56 pmPHL-BOI
17h 50m1 stop
$334Alaska Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Delta Logo
1:49 pm - 12:51 amBOI-PHL
9h 02m1 stop
Delta Logo
6:00 am - 12:39 pmPHL-BOI
8h 39m1 stop
$337Delta
Find Deal
Mon, Nov 24 - Thu, Nov 27
American Airlines Logo
5:17 am - 4:42 pmGEG-PHL
8h 25m1 stop
American Airlines Logo
9:00 am - 4:34 pmPHL-GEG
10h 34m1 stop
$340American Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
American Airlines Logo
5:45 pm - 6:19 amGEG-PHL
9h 34m1 stop
American Airlines Logo
7:00 am - 2:09 pmPHL-GEG
10h 09m1 stop
$375American Airlines
Find Deal
Thu, Jan 22 - Mon, Jan 26

Frontier flights from Idaho to Philadelphia

Our best Frontier deals on Idaho to Philadelphia flight tickets
Frontier
Dec 11
BOI12:44 pmBoise Air Term. Gowen Fld
23h 55m
2 stops
PHL2:39 pmPhiladelphia
Dec 19
PHL8:36 pmPhiladelphia
17h 23m
1 stop
BOI11:59 amBoise Air Term. Gowen Fld
$213
Find similar
Frontier
Nov 23
BOI12:48 pmBoise Air Term. Gowen Fld
13h 57m
1 stop
PHL4:45 amPhiladelphia
Nov 25
PHL6:00 amPhiladelphia
7h 53m
1 stop
BOI11:53 amBoise Air Term. Gowen Fld
$327
Find similar
Frontier
Nov 23
BOI12:48 pmBoise Air Term. Gowen Fld
25h 36m
2 stops
PHL4:24 pmPhiladelphia
Nov 25
PHL6:00 amPhiladelphia
7h 53m
1 stop
BOI11:53 amBoise Air Term. Gowen Fld
$342
Find similar

Alaska Airlines flights from Idaho to Philadelphia

Our best Alaska Airlines deals on Idaho to Philadelphia flight tickets
Alaska Airlines
Dec 4
GEG8:47 pmSpokane
29h 59m
1 stop
PHL5:46 amPhiladelphia
Dec 8
PHL7:06 amPhiladelphia
19h 08m
1 stop
GEG11:14 pmSpokane
$314
Find similar
Alaska Airlines
Dec 5
BOI5:59 pmBoise Air Term. Gowen Fld
21h 54m
1 stop
PHL5:53 pmPhiladelphia
Dec 8
PHL7:06 amPhiladelphia
17h 50m
1 stop
BOI10:56 pmBoise Air Term. Gowen Fld
$334
Find similar
Alaska Airlines
Mar 3
GEG5:40 amSpokane
8h 40m
1 stop
PHL5:20 pmPhiladelphia
Mar 4
PHL6:20 pmPhiladelphia
8h 39m
1 stop
GEG11:59 pmSpokane
$342
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to Philadelphia 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, momondo users made 832,500 searches. Data last updated November 10, 2025.
Use the filters below to find and compare flights from Idaho to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 12/11

12:44 pm-2:39 pm

2 stops23h 55m

Philadelphia

Fri 12/19

8:36 pm-11:59 am

1 stop17h 23m

$213

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sun 12/7

12:44 pm-5:31 am

1 stop14h 47m

Philadelphia

Wed 12/10

5:30 am-11:49 am

2 stops32h 19m

$282

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 12/4

8:47 pm-5:46 am

1 stop29h 59m

Philadelphia

Mon 12/8

7:06 am-11:14 pm

1 stop19h 08m

$314

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sat 12/6

6:03 am-5:46 am

1 stop21h 43m

Philadelphia

Mon 12/15

6:54 pm-12:45 pm

1 stop19h 51m

$315

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 12/4

11:19 am-11:57 pm

2 stops9h 38m

Philadelphia

Mon 12/8

5:17 pm-12:11 am

2 stops9h 54m

$326

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sun 11/23

12:48 pm-4:45 am

1 stop13h 57m

Philadelphia

Tue 11/25

6:00 am-11:53 am

1 stop7h 53m

$327

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Fri 12/5

5:59 pm-5:53 pm

1 stop21h 54m

Philadelphia

Mon 12/8

7:06 am-10:56 pm

1 stop17h 50m

$334

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Mon 11/24

1:49 pm-12:51 am

1 stop9h 02m

Philadelphia

Thu 11/27

6:00 am-12:39 pm

1 stop8h 39m

$337

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Tue 12/9

5:17 am-4:42 pm

1 stop8h 25m

Philadelphia

Tue 12/16

9:00 am-4:34 pm

1 stop10h 34m

$340

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 1/22

5:45 pm-6:19 am

1 stop9h 34m

Philadelphia

Mon 1/26

7:00 am-2:09 pm

1 stop10h 09m

$375

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Philadelphia from

How to get the cheapest flight ticket from Idaho to Philadelphia

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 Philadelphia?

The cheapest month to fly to Philadelphia from Idaho is in January. Flight prices, which tend to average around $386, are often lower during this time because this is during the off-season. The month of April is another great option to travel to Philadelphia, with average flight prices from Idaho averaging around $393.

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

The cheapest day to depart from Idaho to Philadelphia is on a Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $457. On the other hand, Sunday is the most expensive day to depart from Idaho because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $638.

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

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Idaho to Philadelphia in the evening for as low as $407. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the morning when prices are around $502.

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

You are more likely to see cheaper flights to Philadelphia from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $478 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Idaho for as low as $385 on momondo.

Cheap Idaho to Philadelphia flight deals and tips

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

Direct flights

None
There are no direct flights from Idaho to Philadelphia. There are no popular flight routes from Idaho to Philadelphia.
Search flight deals

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

    Prices for flights from Idaho to Philadelphia Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Philadelphia

Compare and see reviews for airlines that fly from Idaho to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $130Free CancellationRating
5.8
3,111 reviews
Search Frontier flights
DeltaPriceFrom $228Free CancellationRating
7.9
8,004 reviews
Search Delta flights
American AirlinesPriceFrom $319Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $340Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights
SouthwestPriceFrom $407Free CancellationRating
8.0
4,238 reviews
Search Southwest flights

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Cape May
Rehoboth Beach
Ocean City
Wildwood Crest
King of Prussia
Cherry Hill
Dewey Beach
Newark
Reading
North Wildwood
Dover
Avalon
Lewes
Stone Harbor
Essington
Vineland
Pottstown
New Castle
Somers Point

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho to Philadelphia. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Philadelphia from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Idaho to Philadelphia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Philadelphia from Idaho.

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

Yes momondo offers price alerts on flights to Philadelphia from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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