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$132+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Jul 16 — Jul 231
Wed 7/16
Wed 7/23
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Boise Air Term. Gowen Fld are usually found in August or September, 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 July 11, 2025.

Round-trip from

$197
(Delta)

One-way from

$132
(FlightHub)

Popular in

November

Cheapest in

August

Average price

$457
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. 18% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 11, 2025.

This Delta deal was found by Cheapflights users on 7/10. 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.
Wed 8/136:55 pmPHL - BOI
1 stop7h 04mDelta
Sat 8/233:06 pmBOI - PHL
1 stop6h 45mDelta
Deal found 7/10$197
This American Airlines deal was found by Cheapflights users on 7/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/122:01 pmPHL - BOI
1 stop8h 09mAmerican Airlines
Tue 8/265:15 pmBOI - PHL
1 stop10h 10mAmerican Airlines
Deal found 7/9$199
This Priceline deal was found by Cheapflights users on 7/8. 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 9/116:45 amPHL - BOI
1 stop6h 55mFrontier
Sun 9/2112:25 pmBOI - PHL
1 stop10h 32mFrontier
Deal found 7/8$209
This Southwest deal was found by Cheapflights users on 7/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/245:30 amPHL - BOI
1 stop11h 50mSouthwest
Tue 8/266:00 amBOI - PHL
2 stops9h 40mSouthwest
Deal found 7/10$249
This FlightHub deal was found by Cheapflights users on 7/8. 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 10/165:45 amPHL - BOI
2 stops16h 59mSpirit Airlines
Sun 10/199:49 pmBOI - PHL
1 stop29h 43mSpirit Airlines
Deal found 7/8$289

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 July 11, 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

Wed 8/13

6:55 pm-11:59 pm

1 stop7h 04m

Boise Air Term. Gowen Fld

Sat 8/23

3:06 pm-11:51 pm

1 stop6h 45m

$197

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 8/12

2:01 pm-8:10 pm

1 stop8h 09m

Boise Air Term. Gowen Fld

Tue 8/26

5:15 pm-5:25 am

1 stop10h 10m

$199

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 9/11

6:45 am-11:40 am

1 stop6h 55m

Boise Air Term. Gowen Fld

Sun 9/21

12:25 pm-12:57 am

1 stop10h 32m

$209

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sun 8/24

5:30 am-3:20 pm

1 stop11h 50m

Boise Air Term. Gowen Fld

Tue 8/26

6:00 am-5:40 pm

2 stops9h 40m

$249

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 9/10

9:50 pm-6:50 pm

2 stops23h 00m

Boise Air Term. Gowen Fld

Sun 9/21

9:16 pm-9:46 am

3 stops34h 30m

$351

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sun 9/14

5:15 pm-8:21 pm

1 stop29h 06m

$132

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 8/2

6:59 pm-11:59 pm

1 stop7h 00m

$174

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 8/9

9:12 pm-4:50 pm

2 stops21h 38m

$206

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sun 8/3

6:15 am-11:46 am

1 stop7h 31m

$207

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 8/2

12:20 pm-11:00 pm

2 stops12h 40m

$215

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 13 results
1
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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 June 27, 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 $398). 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 July 11, 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.

How much does it cost to fly round-trip from Philadelphia to Boise?

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 July 11, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,249 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,951 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,562 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,846 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $197 on this airline. Additional options worth looking into are American Airlines and Southwest, starting at $199 and $249 round-trip. Delta is priced at 59% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to Boise one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $132. Delta flights start at $174 while deals on Southwest start at $215 one-way.

  • 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 $398). 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 Philadelphia?

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

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Alternative routes for Philadelphia to Boise

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Philadelphia to Boise

Discover the top 5 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 July 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$160Average$367FlexibilityNo cancel feeOn-time65%
DeltaCheapest$301Average$463FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$326Average$507FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$362Average$448FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$429Average$555FlexibilityNo cancel feeOn-time69%

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