Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Idaho to Philadelphia from $168

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 11/4. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Idaho to Philadelphia

Cheap round-trip flights

Alaska Airlines Logo
4:25 pm - 5:40 amBOI-PHL
11h 15m1 stop
Alaska Airlines Logo
7:00 am - 2:36 pmPHL-BOI
9h 36m1 stop
$336Alaska Airlines
Find Deal
Mon, Oct 20 - Thu, Oct 23
Alaska Airlines Logo
8:47 pm - 5:53 pmGEG-PHL
18h 06m1 stop
Alaska Airlines Logo
6:54 pm - 12:24 amPHL-GEG
8h 30m1 stop
$336Alaska Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Delta Logo
1:39 pm - 12:52 amBOI-PHL
9h 13m1 stop
Delta Logo
5:30 am - 12:29 pmPHL-BOI
8h 59m1 stop
$337Delta
Find Deal
Wed, Oct 15 - Mon, Oct 20
American Airlines Logo
3:10 pm - 5:07 amGEG-PHL
10h 57m1 stop
American Airlines Logo
5:00 am - 11:43 amPHL-GEG
9h 43m1 stop
$337American Airlines
Find Deal
Mon, Oct 20 - Mon, Oct 27
Delta Logo
6:00 am - 7:35 pmGEG-PHL
10h 35m2 stops
Delta Logo
6:47 pm - 11:56 pmPHL-GEG
8h 09m1 stop
$342Delta
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
7:05 pm - 5:26 amBOI-PHL
8h 21m1 stop
United Airlines Logo
10:32 am - 6:47 pmPHL-BOI
10h 15m2 stops
$342United Airlines
Find Deal
Wed, Oct 15 - Tue, Oct 21
American Airlines Logo
6:00 am - 6:29 pmGEG-PHL
9h 29m1 stop
American Airlines Logo
3:55 pm - 9:28 pmPHL-GEG
8h 33m1 stop
$343American Airlines
Find Deal
Wed, Dec 24 - Thu, Jan 1
Southwest Logo
5:15 am - 3:05 pmBOI-PHL
7h 50m2 stops
Southwest Logo
6:00 am - 2:05 pmPHL-BOI
10h 05m2 stops
$356Southwest
Find Deal
Thu, Dec 11 - Tue, Dec 16
Southwest Logo
8:50 am - 10:10 pmBOI-PHL
11h 20m2 stops
Southwest Logo
10:15 am - 6:45 pmPHL-BOI
10h 30m2 stops
$439Southwest
Find Deal
Wed, Oct 15 - Tue, Oct 21
United Airlines Logo
7:05 pm - 11:56 amBOI-PHL
14h 51m2 stops
United Airlines Logo
1:05 pm - 11:44 pmPHL-BOI
12h 39m2 stops
$447United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21

Alaska Airlines flights from Idaho to Philadelphia

Our best Alaska Airlines deals on Idaho to Philadelphia flight tickets
Alaska Airlines
Oct 20
BOI4:25 pmBoise Air Term. Gowen Fld
11h 15m
1 stop
PHL5:40 amPhiladelphia
Oct 23
PHL7:00 amPhiladelphia
9h 36m
1 stop
BOI2:36 pmBoise Air Term. Gowen Fld
$336
Find similar
Alaska Airlines
Oct 24
BOI9:00 amBoise Air Term. Gowen Fld
18h 40m
1 stop
PHL5:40 amPhiladelphia
Oct 26
PHL7:02 amPhiladelphia
31h 34m
1 stop
BOI12:36 pmBoise Air Term. Gowen Fld
$402
Find similar
Alaska Airlines
Oct 12
GEG8:54 pmSpokane
29h 46m
1 stop
PHL5:40 amPhiladelphia
Oct 17
PHL7:11 pmPhiladelphia
26h 39m
1 stop
GEG6:50 pmSpokane
$412
Find similar

Delta flights from Idaho to Philadelphia

Our best Delta deals on Idaho to Philadelphia flight tickets
Delta
Oct 15
BOI1:39 pmBoise Air Term. Gowen Fld
9h 13m
1 stop
PHL12:52 amPhiladelphia
Oct 20
PHL5:30 amPhiladelphia
8h 59m
1 stop
BOI12:29 pmBoise Air Term. Gowen Fld
$337
Find similar
Delta
Dec 4
GEG6:00 amSpokane
10h 35m
2 stops
PHL7:35 pmPhiladelphia
Dec 8
PHL6:47 pmPhiladelphia
8h 09m
1 stop
GEG11:56 pmSpokane
$342
Find similar
Delta
Oct 15
BOI6:00 amBoise Air Term. Gowen Fld
11h 14m
2 stops
PHL7:14 pmPhiladelphia
Oct 22
PHL5:30 amPhiladelphia
10h 32m
2 stops
BOI2:02 pmBoise Air Term. Gowen Fld
$347
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 September 22, 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

Mon 10/20

4:25 pm-5:40 am

1 stop11h 15m

Philadelphia

Thu 10/23

7:00 am-2:36 pm

1 stop9h 36m

$336

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 12/4

8:47 pm-5:53 pm

1 stop18h 06m

Philadelphia

Mon 12/8

6:54 pm-12:24 am

1 stop8h 30m

$336

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 10/15

1:39 pm-12:52 am

1 stop9h 13m

Philadelphia

Mon 10/20

5:30 am-12:29 pm

1 stop8h 59m

$337

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Mon 10/20

3:10 pm-5:07 am

1 stop10h 57m

Philadelphia

Mon 10/27

5:00 am-11:43 am

1 stop9h 43m

$337

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 12/4

6:00 am-7:35 pm

2 stops10h 35m

Philadelphia

Mon 12/8

6:47 pm-11:56 pm

1 stop8h 09m

$342

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 10/15

7:05 pm-5:26 am

1 stop8h 21m

Philadelphia

Tue 10/21

10:32 am-6:47 pm

2 stops10h 15m

$342

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 12/24

6:00 am-6:29 pm

1 stop9h 29m

Philadelphia

Thu 1/1

3:55 pm-9:28 pm

1 stop8h 33m

$343

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 12/11

5:15 am-3:05 pm

2 stops7h 50m

Philadelphia

Tue 12/16

6:00 am-2:05 pm

2 stops10h 05m

$356

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 10/15

8:50 am-10:10 pm

2 stops11h 20m

Philadelphia

Tue 10/21

10:15 am-6:45 pm

2 stops10h 30m

$439

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Tue 10/14

7:05 pm-11:56 am

2 stops14h 51m

Philadelphia

Tue 10/21

1:05 pm-11:44 pm

2 stops12h 39m

$447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $366, are often lower during this time because this is during the off-season. The month of May is another great option to travel to Philadelphia, with average flight prices from Idaho averaging around $411.

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 $474 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 $387 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
3,166 reviews
Search Frontier flights
DeltaPriceFrom $228Free CancellationRating
7.9
7,971 reviews
Search Delta flights
American AirlinesPriceFrom $319Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $342Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
SouthwestPriceFrom $386Free CancellationRating
8.0
4,244 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
Dewey Beach
Reading
Newark
Cherry Hill
North Wildwood
Dover
Avalon
Lewes
Stone Harbor
Vineland
Essington
Pottstown
New Castle
West Chester

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.

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 10/22
Wed 10/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States