HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Boise

$159+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — BOI
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
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.

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 February 13, 2026.

This Delta deal was found by Cheapflights users on 2/10. 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.
Tue 3/103:36 pm
PHL
-
BOI
1 stop8h 49m
Delta
Wed 4/15:30 am
BOI
-
PHL
2 stops13h 22m
Delta
Deal found 2/10$272
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/103:54 pm
PHL
-
BOI
1 stop9h 44m
American Airlines
Wed 4/11:39 pm
BOI
-
PHL
1 stop9h 15m
American Airlines
Deal found 2/10$303
This Delta deal was found by Cheapflights users on 2/10. 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.
Tue 3/103:36 pm
PHL
-
BOI
1 stop8h 49m
Delta
Tue 3/178:00 am
BOI
-
PHL
1 stop7h 28m
Delta
Deal found 2/10$317
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/103:30 pm
PHL
-
BOI
1 stop7h 59m
United Airlines
Tue 3/176:55 pm
BOI
-
PHL
1 stop10h 20m
United Airlines
Deal found 2/10$338
This United Airlines deal was found by Cheapflights users on 2/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:00 am
PHL
-
BOI
2 stops10h 48m
United Airlines
Wed 5/68:34 am
BOI
-
PHL
1 stop6h 58m
United Airlines
Deal found 2/10$343
This Delta deal was found by Cheapflights users on 2/12. 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 5/77:01 pm
PHL
-
BOI
1 stop6h 39m
Delta
Tue 5/126:08 pm
BOI
-
PHL
1 stop9h 36m
Delta
Deal found 2/12$351
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 2/265:47 pm
PHL
-
BOI
1 stop19h 24m
Frontier
Sun 3/111:56 am
BOI
-
PHL
2 stops24h 39m
Frontier
Deal found 2/12$356
This Southwest deal was found by Cheapflights users on 2/10. 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.
Thu 3/55:20 am
PHL
-
BOI
1 stop7h 10m
Southwest
Mon 3/94:20 pm
BOI
-
PHL
1 stop6h 35m
Southwest
Deal found 2/10$357
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
PHL
-
BOI
1 stop8h 49m
American Airlines
Tue 5/121:29 pm
BOI
-
PHL
1 stop6h 55m
American Airlines
Deal found 2/10$359

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 February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$272
(Delta)

One-way from

$159
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$497
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. 6% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 13, 2026.
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

Tue 3/10

3:36 pm-10:25 pm

1 stop8h 49m

Boise Air Term. Gowen Fld

Wed 4/1

5:30 am-8:52 pm

2 stops13h 22m

$272

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 3/11

6:49 pm-11:59 pm

1 stop7h 10m

Boise Air Term. Gowen Fld

Wed 4/1

5:30 am-8:52 pm

2 stops13h 22m

$272

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 3/10

3:36 pm-10:25 pm

1 stop8h 49m

Boise Air Term. Gowen Fld

Tue 3/17

8:00 am-5:28 pm

1 stop7h 28m

$317

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 5/5

6:00 am-4:14 pm

2 stops12h 14m

Boise Air Term. Gowen Fld

Tue 5/12

2:25 pm-11:17 pm

1 stop6h 52m

$322

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Sat 5/2

6:00 am-2:26 pm

2 stops10h 26m

Boise Air Term. Gowen Fld

Sat 5/9

6:00 am-5:09 pm

1 stop9h 09m

$322

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 4/28

8:00 am-4:48 pm

2 stops10h 48m

Boise Air Term. Gowen Fld

Wed 5/6

8:34 am-5:32 pm

1 stop6h 58m

$343

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Thu 5/7

7:01 pm-11:40 pm

1 stop6h 39m

Boise Air Term. Gowen Fld

Tue 5/12

6:08 pm-5:44 am

1 stop9h 36m

$351

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 3/24

7:19 pm-11:20 am

2 stops42h 01m

$161

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Tue 3/10

1:46 pm-10:23 pm

2 stops10h 37m

$164

PhiladelphiaBoise

PHL - BOI

PHLBOI

Philadelphia

Wed 3/25

5:05 am-11:20 am

2 stops32h 15m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 18 results
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 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.

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 February 6, 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, February is the cheapest month in which you can book a flight from Philadelphia to Boise (average of $134). Flying from Philadelphia to Boise in October is currently the most expensive (average of $289). 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.

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 February 13, 2026.
See what other customers who have flown with Southwest, Delta, and United 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
4,283 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,283 reviews
Southwest
8.0
Very good
4,283 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,186 reviews
Southwest
8.0
Very good
4,283 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,283 reviews
Southwest
8.0
Very good
4,283 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,275 reviews
Southwest
8.0
Very good
4,283 reviews

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 $272, Delta can have you in Boise from Philadelphia in 8h 49m. Philadelphia and Boise are separated by a distance of 2106 mi.

  • 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 Southwest, starting at $298 and $358 round-trip. Delta is priced at 42% 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, February is the cheapest month in which you can book a flight from Philadelphia to Boise (average of $134). Flying from Philadelphia to Boise in October is currently the most expensive (average of $289). 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

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
Philadelphia to Jackson flights
John F Kennedy Intl to Spokane flights
Newark to Spokane flights
John F Kennedy Intl to Boise flights
Newark to Hailey flights
Dulles Intl to Spokane flights
John F Kennedy Intl to Hailey flights
Dulles Intl to Boise flights
Newark to Boise flights
LaGuardia to Hailey flights
Pittsburgh to Jackson flights
LaGuardia to Spokane flights
LaGuardia to Boise flights
Pittsburgh to Boise flights
LaGuardia to Idaho Falls flights
Dulles Intl to Hailey flights
Newark to Idaho Falls flights
John F Kennedy Intl to Idaho Falls flights
Reagan-National to Spokane flights
Pittsburgh to Spokane flights
Reagan-National to Boise flights
Philadelphia to Spokane flights
Harrisburg to Jackson flights
Reagan-National to Idaho Falls flights
Reagan-National to Hailey flights
Dulles Intl to Idaho Falls flights
Harrisburg to Boise flights
Newark to West Yellowstone flights
Philadelphia to Idaho Falls flights
LaGuardia to West Yellowstone flights
John F Kennedy Intl to West Yellowstone flights
Harrisburg to Spokane flights
Allentown to Jackson flights
Harrisburg to Idaho Falls flights
Pittsburgh to Idaho Falls flights
Allentown to Spokane flights
State College to Boise flights
Philadelphia to Hailey flights
Allentown to Boise flights
Dulles Intl to West Yellowstone flights
Philadelphia to West Yellowstone flights
Scranton to Boise flights
Pittsburgh to Hailey flights

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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$257Average$417FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$298Average$436FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$358Average$488FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$367Average$531FlexibilityNo 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.
Site
Cookie settings©2026 Cheapflights