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$127+ Cheap flights from Philadelphia to Boise (PHL - BOI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Boise Air Term. Gowen Fld are usually found in September or August, booked 83 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Philadelphia to Boise

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Boise (BOI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$212
(Priceline)

One-way from

$127
(Frontier)

Popular in

November

Cheapest in

September

Average price

$380
From Philadelphia to Boise Air Term. Gowen Fld
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One-way flight from Philadelphia to Boise Air Term. Gowen Fld
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Highest demand for flights based on searches. 17% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Philadelphia to Boise

Cheapest flights from Philadelphia to Boise
Explore the most affordable flight options available from Philadelphia to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Priceline deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:45 amPHL - BOI
1 stop6h 52mFrontier
Sun 9/2812:22 pmBOI - PHL
1 stop10h 35mFrontier
Deal found 8/14$212
This FlightHub deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:42 amPHL - BOI
1 stop7h 01mFrontier
Sun 10/1912:28 pmBOI - PHL
1 stop14h 51mFrontier
Deal found 8/14$240
This Priceline deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:45 amPHL - BOI
1 stop6h 52mFrontier
Thu 9/1112:22 pmBOI - PHL
1 stop10h 35mFrontier
Deal found 8/12$245
This Orbitz deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:19 amPHL - BOI
1 stop7h 24mMultiple Airlines
Mon 11/176:05 pmBOI - PHL
1 stop9h 37mMultiple Airlines
Deal found 8/13$291
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:03 pmPHL - BOI
2 stops21h 18mMultiple Airlines
Fri 9/199:26 pmBOI - PHL
1 stop21h 25mMultiple Airlines
Deal found 8/13$293
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:00 pmPHL - BOI
1 stop6h 54mDelta
Mon 10/201:39 pmBOI - PHL
1 stop9h 13mDelta
Deal found 8/14$297
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:21 pmPHL - BOI
1 stop22h 00mSpirit Airlines
Fri 9/199:26 pmBOI - PHL
1 stop21h 25mSpirit Airlines
Deal found 8/13$301
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:42 amPHL - BOI
1 stop7h 01mFrontier
Thu 10/1612:28 pmBOI - PHL
1 stop14h 51mFrontier
Deal found 8/13$306
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:55 pmPHL - BOI
1 stop7h 20mDelta
Tue 9/305:25 amBOI - PHL
1 stop6h 35mDelta
Deal found 8/13$307

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Boise 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, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Philadelphia to Boise that are best for you.

Fly from

Philadelphia

Fly to

Boise

Route

Depart

Return

Price

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 9/25

6:45 am-11:37 am

1 stop6h 52m

Boise Air Term. Gowen Fld

Sun 9/28

12:22 pm-12:57 am

1 stop10h 35m

$212

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 9/4

6:45 am-11:37 am

1 stop6h 52m

Boise Air Term. Gowen Fld

Thu 9/11

12:22 pm-12:57 am

1 stop10h 35m

$245

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 8/28

6:25 am-11:38 am

1 stop7h 13m

Boise Air Term. Gowen Fld

Thu 9/4

12:22 pm-12:57 am

1 stop10h 35m

$277

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Fri 9/12

6:03 pm-1:21 pm

2 stops21h 18m

Boise Air Term. Gowen Fld

Fri 9/19

9:26 pm-8:51 pm

1 stop21h 25m

$293

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 11/1

5:00 am-12:38 pm

1 stop9h 38m

Boise Air Term. Gowen Fld

Tue 11/11

2:06 pm-11:59 pm

1 stop7h 53m

$297

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 10/7

7:00 pm-11:54 pm

1 stop6h 54m

Boise Air Term. Gowen Fld

Mon 10/20

1:39 pm-12:52 am

1 stop9h 13m

$297

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 10/15

7:00 pm-11:54 pm

1 stop6h 54m

Boise Air Term. Gowen Fld

Mon 10/20

1:39 pm-12:52 am

1 stop9h 13m

$297

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Fri 9/12

5:21 pm-1:21 pm

1 stop22h 00m

Boise Air Term. Gowen Fld

Fri 9/19

9:26 pm-8:51 pm

1 stop21h 25m

$301

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 9/24

6:00 am-2:15 pm

2 stops10h 15m

Boise Air Term. Gowen Fld

Sat 9/27

3:20 pm-11:55 pm

1 stop6h 35m

$302

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 9/24

7:22 am-3:00 pm

1 stop9h 38m

Boise Air Term. Gowen Fld

Sat 9/27

5:45 pm-6:02 am

1 stop10h 17m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 22 results
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Best time to book a flight from Philadelphia to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from Philadelphia with our price prediction graph.
Estimated round-trip 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.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Boise

How far ahead should I book a flight from Philadelphia to Boise?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Boise. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Boise, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Philadelphia to Boise?

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Boise (average of $314). Flying from Philadelphia to Boise in June is currently the most expensive (average of $399). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to BOI?

Find hourly flight availability from Philadelphia to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

It’s optimal to fly from Philadelphia to Boise at noon. By choosing this option you can save up to 54% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boise. Reviews last updated August 14, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Philadelphia to Boise have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Philadelphia to Boise round-trip?

    Our cheapest airline available from Philadelphia to Boise is Delta. Our recent data shows that you can find tickets from as low as $325 on this airline. Additional options worth looking into are American Airlines and Southwest, starting at $336 and $362 round-trip. Delta is priced at 33% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Philadelphia to Boise that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Boise?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Boise.

  • Can I find deals for business class flights from Philadelphia to Boise?

    Yes. Cheapflights offers flight deals from Philadelphia to Boise by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Boise?

    Currently, October is the cheapest month in which you can book a flight from Philadelphia to Boise (average of $314). Flying from Philadelphia to Boise in June is currently the most expensive (average of $399). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
Ontario
Meridian
Nampa
Caldwell
McCall

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Top 4 airlines flying from Philadelphia to Boise

Discover the top 4 airlines that operate flights from Philadelphia to Boise. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$325Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$336Average$505FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$362Average$448FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$429Average$555FlexibilityNo cancel feeOn-time69%

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