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$86+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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Cheap 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 March 28, 2026.

This Booking.com deal was found by Cheapflights users on 3/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/168:35 pm
PHL
-
BOI
1 stop17h 52m
Frontier
Tue 5/191:22 pm
BOI
-
PHL
1 stop14h 15m
Frontier
Deal found 3/23$243
This Delta deal was found by Cheapflights users on 3/24. 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 5/55:30 am
PHL
-
BOI
1 stop9h 37m
Delta
Tue 5/122:23 pm
BOI
-
PHL
1 stop6h 49m
Delta
Deal found 3/24$305
This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:15 am
PHL
-
BOI
1 stop7h 34m
American Airlines
Wed 5/66:26 pm
BOI
-
PHL
1 stop10h 34m
American Airlines
Deal found 3/26$331
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 4/253:58 pm
PHL
-
BOI
1 stop9h 43m
American Airlines
Sat 5/26:26 pm
BOI
-
PHL
1 stop9h 12m
American Airlines
Deal found 3/27$357
This Delta deal was found by Cheapflights users on 3/27. 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.
Sat 4/2512:25 pm
PHL
-
BOI
2 stops11h 59m
Delta
Sat 5/25:34 am
BOI
-
PHL
1 stop5h 55m
Delta
Deal found 3/27$362
This Southwest deal was found by Cheapflights users on 3/27. 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.
Tue 4/215:50 am
PHL
-
BOI
1 stop7h 05m
Southwest
Mon 4/274:20 pm
BOI
-
PHL
1 stop6h 15m
Southwest
Deal found 3/27$367
This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:21 pm
PHL
-
BOI
1 stop9h 33m
American Airlines
Mon 4/206:26 pm
BOI
-
PHL
1 stop9h 12m
American Airlines
Deal found 3/26$369
This Delta deal was found by Cheapflights users on 3/26. 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 4/167:03 am
PHL
-
BOI
1 stop8h 04m
Delta
Mon 4/2011:35 pm
BOI
-
PHL
2 stops10h 13m
Delta
Deal found 3/26$374

Find 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 March 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$243
(Booking.com)

One-way from

$86
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$408
Provider with most accurate pricing for Philadelphia-Boise Air Term. Gowen Fld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Boise Air Term. Gowen Fld flights.
Search Deals
From Philadelphia to Boise Air Term. Gowen Fld
Search Deals
One-way flight from Philadelphia to Boise Air Term. Gowen Fld
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 28, 2026.
Use the filters below to find and compare flights from Philadelphia to Boise that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 5/16

8:35 pm-12:27 pm

1 stop17h 52m

Boise Air Term. Gowen Fld

Tue 5/19

1:22 pm-5:37 am

1 stop14h 15m

$243

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 5/5

6:05 am-4:14 pm

2 stops12h 09m

Boise Air Term. Gowen Fld

Tue 5/12

2:23 pm-11:12 pm

1 stop6h 49m

$310
Quickest round-trip

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 5/2

5:35 am-2:10 pm

2 stops10h 35m

Boise Air Term. Gowen Fld

Wed 5/6

3:15 pm-11:55 pm

1 stop6h 40m

$362

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 4/16

7:03 am-1:07 pm

1 stop8h 04m

Boise Air Term. Gowen Fld

Mon 4/20

11:35 pm-11:48 am

2 stops10h 13m

$374

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 4/29

7:22 am-3:33 pm

1 stop10h 11m

Boise Air Term. Gowen Fld

Sat 5/2

6:08 pm-6:02 am

1 stop9h 54m

$398

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 5/5

7:22 am-1:52 pm

1 stop8h 30m

Boise Air Term. Gowen Fld

Wed 5/6

6:08 pm-6:02 am

1 stop9h 54m

$398

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 5/16

5:35 am-1:20 pm

2 stops9h 45m

Boise Air Term. Gowen Fld

Tue 5/19

6:40 am-5:50 pm

2 stops9h 10m

$413
Cheapest one-way

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 5/9

8:35 pm-12:27 pm

1 stop17h 52m

$86

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 5/9

8:35 pm-2:23 pm

2 stops19h 48m

$169

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 4/18

12:25 pm-11:11 pm

2 stops12h 46m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Philadelphia to Boise

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 Philadelphia to Boise in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Philadelphia-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Boise flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Boise 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 Philadelphia-Boise 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 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 March 13, 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to Boise, you should look to book at least 48 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, May is the cheapest month in which you can book a flight from Philadelphia to Boise (average of $136). Flying from Philadelphia to Boise in February is currently the most expensive (average of $298). 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.

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 March 28, 2026.
See what other customers who have flown with Southwest,Delta, andUnited 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
4,333 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,333 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,356 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,499 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,520 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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.

  • How long is the flight from Philadelphia to Boise?

    For as low as $362, Frontier can have you in Boise from Philadelphia in 10h 35m. Philadelphia and Boise are separated by a distance of 2106 mi. This flight may include one or multiple stops.

  • 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 $257 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $283 and $348 round-trip. Delta is priced at 43% 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 Delta, which is currently one of the cheapest options available, starting at $171. Southwest flights start at $173 while deals on United Airlines start at $175 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, May is the cheapest month in which you can book a flight from Philadelphia to Boise (average of $136). Flying from Philadelphia to Boise in February is currently the most expensive (average of $298). 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 March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$257Average$427FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$283Average$429FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$348Average$566FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$371Average$481FlexibilityNo cancel feeOn-time63%

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