HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boise

$101+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
lut 26 — mar 51
śr. 2/26
śr. 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Boise with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Philadelphia to Boise Air Term. Gowen Fld are usually found in April or September, booked 65 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 Luty 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$169
(FlightHub)

One-way from

$101
(FlightHub)

Popular in

November

Cheapest in

April

Average price

$529
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. 14% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 Luty 21, 2025.

This FlightHub deal was found by Cheapflights users on 2/20. 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.
wt. 4/110:08 pmPHL - BOI
1 stop16h 28mSpirit Airlines
pon. 4/71:31 pmBOI - PHL
1 stop14h 34mSpirit Airlines
Deal found 2/20$169
This Delta deal was found by Cheapflights users on 2/20. 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.
wt. 4/16:00 amPHL - BOI
2 stops13h 04mDelta
pon. 4/78:15 pmBOI - PHL
1 stop7h 28mDelta
Deal found 2/20$276
This United Airlines deal was found by Cheapflights users on 2/20. 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.
śr. 4/169:31 amPHL - BOI
2 stops10h 21mUnited Airlines
śr. 4/237:00 pmBOI - PHL
1 stop8h 35mUnited Airlines
Deal found 2/20$277
This American Airlines deal was found by Cheapflights users on 2/21. 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.
pt. 5/25:00 amPHL - BOI
1 stop9h 33mAmerican Airlines
sob. 5/107:05 amBOI - PHL
1 stop8h 38mAmerican Airlines
Deal found 2/21$370
This Southwest deal was found by Cheapflights users on 2/21. 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.
wt. 8/121:40 pmPHL - BOI
2 stops10h 45mSouthwest
sob. 8/235:10 amBOI - PHL
2 stops8h 55mSouthwest
Deal found 2/21$427
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
czw. 5/156:59 pmPHL - BOI
1 stop17h 47mAlaska Airlines
pon. 5/192:43 pmBOI - PHL
2 stops12h 57mAlaska Airlines
Deal found 2/19$581

Find flights from Philadelphia to Boise within your budget

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 Luty 21, 2025.

Fly from

Philadelphia

Fly to

Boise

Route

Depart

Return

Price

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

wt. 4/1

10:08 pm-12:36 pm

1 stop16h 28m

Boise Air Term. Gowen Fld

pon. 4/7

1:31 pm-6:05 am

1 stop14h 34m

$169

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

wt. 4/1

6:00 am-5:04 pm

2 stops13h 04m

Boise Air Term. Gowen Fld

pon. 4/7

8:15 pm-5:43 am

1 stop7h 28m

$276

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

śr. 4/16

9:31 am-5:52 pm

2 stops10h 21m

Boise Air Term. Gowen Fld

śr. 4/23

7:00 pm-5:35 am

1 stop8h 35m

$277

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

pt. 5/2

5:00 am-12:33 pm

1 stop9h 33m

Boise Air Term. Gowen Fld

sob. 5/10

7:05 am-5:43 pm

1 stop8h 38m

$370

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

wt. 8/12

1:40 pm-10:25 pm

2 stops10h 45m

Boise Air Term. Gowen Fld

sob. 8/23

5:10 am-1:35 pm

1 stop6h 25m

$422

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

czw. 5/15

6:59 pm-10:46 am

1 stop17h 47m

Boise Air Term. Gowen Fld

pon. 5/19

2:43 pm-5:40 am

2 stops12h 57m

$581

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

wt. 3/18

6:38 pm-12:36 pm

2 stops19h 58m

$101

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

wt. 3/18

5:00 am-12:46 pm

1 stop9h 46m

$172

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

czw. 5/1

5:00 am-2:10 pm

2 stops11h 10m

$177

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

ndz. 4/13

6:41 am-9:47 am

2 stops29h 06m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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 February.
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.

Travel insights for flights from Philadelphia to Boise

Get recent, data-driven insights about flights from Philadelphia to Boise including ideal travel times, pricing trends, and more.

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 February 14, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Boise, you should look to book at least 65 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 $436). 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 Luty 21, 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.

Rainfall in Boise by month

Plan your trip to Boise by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boise ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Boise when rainfall is around 0.2 in.

Temperature in Boise by month

Plan your trip to Boise by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boise, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

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 Luty 21, 2025.
Southwest
8.1
Very good
4,408 reviews

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,408 reviews
Southwest
8.1
Very good
4,408 reviews

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,408 reviews

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,217 reviews
Southwest
8.1
Very good
4,408 reviews

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,760 reviews
Southwest
8.1
Very good
4,408 reviews

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,408 reviews

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 Spirit Airlines. Our recent data shows that you can find tickets from as low as $169 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $276 and $277 round-trip. Spirit Airlines is priced at 67% 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 $101. American Airlines flights start at $172 while deals on Southwest start at $177 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 $436). 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
Nampa
McCall
Meridian
Caldwell
Ontario

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Boise

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Jackson flights
John F Kennedy Intl to Jackson flights
LaGuardia to Jackson flights
Dulles Intl to Jackson flights
Reagan-National to Jackson flights
Newark to Spokane flights
John F Kennedy Intl to Spokane flights
LaGuardia to Spokane flights
John F Kennedy Intl to Boise flights
Newark to Boise flights
Dulles Intl to Boise flights
LaGuardia to Boise flights
Philadelphia to Jackson flights
Pittsburgh to Boise flights
Philadelphia to Spokane flights
Reagan-National to Boise flights
Dulles Intl to Spokane flights
Newark to Hailey flights
Reagan-National to Spokane flights
John F Kennedy Intl to Hailey flights
Pittsburgh to Jackson flights
LaGuardia to Hailey flights
Dulles Intl to Idaho Falls flights
John F Kennedy Intl to Idaho Falls flights
Harrisburg to Boise flights
Newark to Idaho Falls flights
Reagan-National to Idaho Falls flights
LaGuardia to Idaho Falls flights
Dulles Intl to Hailey flights
Pittsburgh to Spokane flights
Philadelphia to Idaho Falls flights
Philadelphia to Hailey flights
Reagan-National to Hailey flights
Harrisburg to Spokane flights
Newark to Lewiston flights
Harrisburg to Jackson flights
Newark to West Yellowstone flights
LaGuardia to West Yellowstone flights
Pittsburgh to West Yellowstone flights
Dulles Intl to Pocatello flights
Reagan-National to Pocatello flights
John F Kennedy Intl to West Yellowstone flights
Philadelphia to West Yellowstone flights
Newark to Pocatello flights
Pittsburgh to Idaho Falls flights
State College to Spokane flights

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 Luty 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$210Average$302FlexibilityNo cancel feeOn-time65%
DeltaCheapest$328Average$520FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$341Average$416FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$348Average$550FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$359Average$581FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.