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$180+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — PHL
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
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 September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$280
(American Airlines)

One-way from

$180
(Booking.com)

Popular in

December

Cheapest in

January

Average price

$460
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Philadelphia flights.
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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. 2% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 29, 2025.

This American Airlines deal was found by Cheapflights users on 9/27. 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.
Wed 11/126:37 amBOI - PHL
1 stop8h 53mAmerican Airlines
Wed 11/197:39 amPHL - BOI
1 stop7h 27mAmerican Airlines
Deal found 9/27$280
This Delta deal was found by Cheapflights users on 9/27. 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 11/1211:10 amBOI - PHL
2 stops11h 41mDelta
Wed 11/196:14 amPHL - BOI
2 stops11h 51mDelta
Deal found 9/27$291
This Delta deal was found by Cheapflights users on 9/27. 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.
Thu 12/119:00 amBOI - PHL
2 stops12h 57mDelta
Tue 12/166:15 amPHL - BOI
2 stops14h 36mDelta
Deal found 9/27$311
This Delta deal was found by Cheapflights users on 9/26. 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 12/245:42 amBOI - PHL
2 stops15h 37mDelta
Tue 1/66:15 amPHL - BOI
2 stops12h 38mDelta
Deal found 9/26$318
This Southwest deal was found by Cheapflights users on 9/27. 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.
Thu 12/112:40 pmBOI - PHL
1 stop5h 55mSouthwest
Tue 12/164:55 pmPHL - BOI
1 stop8h 15mSouthwest
Deal found 9/27$320
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Thu 12/1112:59 pmBOI - PHL
1 stop13h 48mFrontier
Tue 12/165:55 pmPHL - BOI
2 stops44h 09mFrontier
Deal found 9/27$326
This Delta deal was found by Cheapflights users on 9/26. 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.
Thu 12/251:00 pmBOI - PHL
2 stops9h 29mDelta
Tue 1/66:15 amPHL - BOI
2 stops12h 38mDelta
Deal found 9/26$331
This American Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 10/241:26 pmBOI - PHL
1 stop6h 59mAmerican Airlines
Wed 10/293:35 pmPHL - BOI
1 stop8h 47mAmerican Airlines
Deal found 9/27$339
This Delta deal was found by Cheapflights users on 9/27. 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 10/247:45 pmBOI - PHL
2 stops13h 11mDelta
Wed 10/297:02 pmPHL - BOI
1 stop6h 52mDelta
Deal found 9/27$344
This United Airlines deal was found by Cheapflights users on 9/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/112:31 pmBOI - PHL
1 stop6h 38mUnited Airlines
Sun 11/166:25 amPHL - BOI
1 stop11h 38mUnited Airlines
Deal found 9/27$359

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 September 29, 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 12/11

2:40 pm-10:35 pm

1 stop5h 55m

Philadelphia

Tue 12/16

4:55 pm-11:10 pm

1 stop8h 15m

$320

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 2/19

7:30 am-11:46 pm

2 stops14h 16m

Philadelphia

Mon 2/23

6:15 am-2:09 pm

1 stop9h 54m

$326

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 12/25

1:00 pm-12:29 am

2 stops9h 29m

Philadelphia

Tue 1/6

6:15 am-4:53 pm

2 stops12h 38m

$331

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Tue 11/4

1:40 pm-11:47 pm

1 stop8h 07m

Philadelphia

Fri 11/7

1:50 pm-10:30 pm

2 stops10h 40m

$344

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 12/25

1:00 pm-11:19 pm

1 stop8h 19m

Philadelphia

Thu 1/1

7:00 am-12:49 pm

1 stop7h 49m

$379

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Thu 12/25

1:00 pm-12:29 am

2 stops9h 29m

Philadelphia

Wed 12/31

7:00 am-12:05 pm

1 stop7h 05m

$384

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Sun 12/21

6:19 pm-5:36 am

1 stop9h 17m

Philadelphia

Tue 1/6

6:15 am-4:53 pm

2 stops12h 38m

$384

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Tue 12/23

6:19 pm-9:26 am

2 stops13h 07m

Philadelphia

Tue 1/6

6:15 am-4:53 pm

2 stops12h 38m

$389

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 12/24

5:42 am-11:19 pm

2 stops15h 37m

Philadelphia

Sat 1/3

7:00 am-12:05 pm

1 stop7h 05m

$402

BoisePhiladelphia

BOI - PHL

BOIPHL

Boise Air Term. Gowen Fld

Wed 12/24

5:42 am-11:19 pm

2 stops15h 37m

Philadelphia

Wed 12/31

12:44 pm-10:56 pm

2 stops12h 12m

$407

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/28

Showing 1-10 of 18 results
1
2

Compare providers for flights from Boise to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Philadelphia in September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boise-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boise-Philadelphia flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 September 26, 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 September 29, 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 September 29, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines 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.
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,964 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,157 reviews
Southwest
8.0
Very good
4,246 reviews

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Boise to Philadelphia?

    Departing from Boise to Philadelphia will take you 5h 55m. Boise and Philadelphia are separated by a distance of 2106 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Frontier, at $130, was found to be the cheapest airline from Boise to Philadelphia.Alternate airlines to your destination round-trip include Delta and American Airlines. Users have found that Frontier is 72% cheaper than the other options available to this destination.

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

    $180 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from $224 and $323, 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
Wildwood
Vineland
King of Prussia
Pottstown
Reading
Ocean City
Dewey Beach
Ephrata
Camden
Cherry Hill
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

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 5 airlines flying from Boise to Philadelphia

Discover the top 5 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 September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$248FlexibilityNo cancel feeOn-time62%
DeltaCheapest$228Average$429FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$319Average$525FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$342Average$543FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$386Average$511FlexibilityNo cancel feeOn-time63%

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