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$147+ Cheap flights from Boise to Philadelphia (BOI - PHL)

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHL
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Philadelphia are usually found in January or May, booked 20 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Boise to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Philadelphia (PHL). 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 30, 2025.

Round-trip from

$270
(Trip.com)

One-way from

$147
(FlightHub)

Popular in

October

Cheapest in

January

Average price

$525
From Boise Air Term. Gowen Fld to Philadelphia
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One-way flight from Boise Air Term. Gowen Fld to Philadelphia
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Highest demand for flights based on searches. 7% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 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 Boise to Philadelphia

Cheapest flights from Boise to Philadelphia
Explore the most affordable flight options available from Boise to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:06 pmBOI - PHL
1 stop9h 43mMultiple Airlines
Thu 8/217:15 amPHL - BOI
1 stop11h 56mMultiple Airlines
Deal found 7/29$270
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Thu 8/146:06 pmBOI - PHL
2 stops13h 50mSpirit Airlines
Thu 8/219:00 amPHL - BOI
1 stop10h 11mSpirit Airlines
Deal found 7/29$296
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:17 pmBOI - PHL
1 stop8h 45mAlaska Airlines
Wed 10/87:00 amPHL - BOI
1 stop9h 36mAlaska Airlines
Deal found 7/30$324
This American Airlines deal was found by Cheapflights users on 7/30. 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 9/91:07 pmBOI - PHL
1 stop6h 53mAmerican Airlines
Wed 9/107:20 amPHL - BOI
1 stop7h 07mAmerican Airlines
Deal found 7/30$325
This Delta deal was found by Cheapflights users on 7/28. 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 9/93:06 pmBOI - PHL
1 stop6h 45mDelta
Wed 9/106:00 amPHL - BOI
2 stops10h 01mDelta
Deal found 7/28$330
This Southwest deal was found by Cheapflights users on 7/29. 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.
Fri 11/75:00 amBOI - PHL
1 stop8h 25mSouthwest
Fri 11/76:35 pmPHL - BOI
1 stop8h 00mSouthwest
Deal found 7/29$397

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from Boise to Philadelphia that are best for you.

Fly from

Boise

Fly to

Philadelphia

Route

Depart

Return

Price

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 8/14

6:06 pm-5:49 am

1 stop9h 43m

Philadelphia

Thu 8/21

7:15 am-5:11 pm

1 stop11h 56m

$270

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 8/14

6:06 pm-9:56 am

2 stops13h 50m

Philadelphia

Thu 8/21

9:00 am-5:11 pm

1 stop10h 11m

$296

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 10/1

7:17 pm-6:02 am

1 stop8h 45m

Philadelphia

Wed 10/8

7:00 am-2:36 pm

1 stop9h 36m

$324

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Tue 9/9

1:07 pm-10:00 pm

1 stop6h 53m

Philadelphia

Wed 9/10

7:20 am-12:27 pm

1 stop7h 07m

$325

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Tue 9/9

3:06 pm-11:51 pm

1 stop6h 45m

Philadelphia

Wed 9/10

6:00 am-2:01 pm

2 stops10h 01m

$330

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Fri 11/7

5:00 am-3:25 pm

1 stop8h 25m

Philadelphia

Fri 11/7

6:35 pm-12:35 am

1 stop8h 00m

$397

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Fri 8/29

12:33 pm-4:54 am

1 stop14h 21m

$147

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Fri 9/5

9:26 pm-10:29 pm

2 stops23h 03m

$152

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sat 8/23

3:06 pm-11:51 pm

1 stop6h 45m

$163

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Mon 10/6

5:20 pm-5:07 am

1 stop9h 47m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 13 results
1
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Best time to book a flight from Boise to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Boise 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 Boise to Philadelphia

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

Use this chart to determine the optimal time to book a round-trip flight from Boise to Philadelphia. Price data was last updated on July 25, 2025.

Booking 20 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boise to Philadelphia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Boise to Philadelphia (average of $236). Flying from Boise to Philadelphia in March is currently the most expensive (average of $295). 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 BOI to PHL?

Find hourly flight availability from Boise to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

When flying from Boise to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 19% versus a flight in the morning.

What is the cheapest day to fly from Boise to Philadelphia?

Use this chart to determine the cheapest time to fly round-trip from Boise to Philadelphia. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boise to Philadelphia flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated July 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Boise to Philadelphia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Boise to Philadelphia. 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 Boise to Philadelphia round-trip?

    Spirit Airlines, at $296, was found to be the cheapest airline from Boise to Philadelphia.Alternate airlines to your destination round-trip include Alaska Airlines and Delta. Users have found that Spirit Airlines is 37% cheaper than the other options available to this destination.

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

    $147 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and Delta, with prices starting from $152 and $163, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boise to Philadelphia 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 Boise to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Boise to Philadelphia (average of $236). Flying from Boise to Philadelphia in March is currently the most expensive (average of $295). 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
Vineland
Wildwood
King of Prussia
Pottstown
Cherry Hill
Ocean City
Chester
Millville
Reading
Ephrata
Camden
Dewey Beach
Dover
Elkton
Essington
Willow Grove
Newark
Exton
Glen Mills
Springfield

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boise to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Boise to Philadelphia

Discover the top 6 airlines that operate flights from Boise to Philadelphia. 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$248FlexibilityNo cancel feeOn-time62%
DeltaCheapest$264Average$422FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$326Average$520FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$332Average$481FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$367Average$502FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$411Average$564FlexibilityNo cancel feeOn-time69%

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