PHL - BOI

$116 Find Cheap Flights from Philadelphia to Boise

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Boise departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Boise

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Boise, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Boise, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$207
Overall average: $444
Frontier
Sat 5/9Sun 5/17
PHL - BOI • 1 stop
Cheapest one-way
$116
Typical prices: $194-$232
Frontier
Sat 5/9
PHL - BOI • 1 stop
Top airlines
Cheapest • from $207 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Philadelphia and Boise. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $318 (round-trip)
Shortest trip • 6h 40m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Boise!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Boise (PHL-BOI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Boise that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Boise

Sat, May 9 - Sun, May 17
Frontier Logo
8:35 pm - 12:27 pm
PHL
-
BOI
17h 52m
1 stop
Frontier Logo
1:22 pm - 5:37 am
BOI
-
PHL
14h 15m
1 stop
$207Frontier
Sat, Apr 11 - Sun, Apr 19
Frontier Logo
8:25 pm - 11:08 am
PHL
-
BOI
16h 43m
1 stop
Frontier Logo
11:53 am - 5:34 am
BOI
-
PHL
15h 41m
1 stop
$228Frontier
Tue, May 5 - Tue, May 12
Delta Logo
6:54 pm - 11:57 pm
PHL
-
BOI
7h 03m
1 stop
Delta Logo
6:41 pm - 6:10 am
BOI
-
PHL
9h 29m
1 stop
$317Delta
Tue, May 5 - Tue, May 12
Delta Logo
12:29 pm - 9:56 pm
PHL
-
BOI
11h 27m
2 stops
Delta Logo
2:23 pm - 11:12 pm
BOI
-
PHL
6h 49m
1 stop
$322Delta
Mon, Apr 13 - Wed, Apr 22
Delta Logo
6:54 pm - 11:57 pm
PHL
-
BOI
7h 03m
1 stop
Delta Logo
5:34 am - 2:01 pm
BOI
-
PHL
6h 27m
1 stop
$325Delta
Tue, May 5 - Tue, May 12
Delta Logo
12:29 pm - 9:56 pm
PHL
-
BOI
11h 27m
2 stops
Delta Logo
9:16 pm - 10:30 am
BOI
-
PHL
11h 14m
2 stops
$327Delta
Mon, Apr 13 - Wed, Apr 22
Delta Logo
3:42 pm - 10:28 pm
PHL
-
BOI
8h 46m
1 stop
Delta Logo
8:40 pm - 8:55 am
BOI
-
PHL
10h 15m
2 stops
$330Delta
Sat, Apr 25 - Thu, Apr 30
Delta Logo
2:34 pm - 9:01 pm
PHL
-
BOI
8h 27m
1 stop
Delta Logo
2:18 pm - 12:59 am
BOI
-
PHL
8h 41m
1 stop
$333Delta
Tue, Apr 14 - Sat, Apr 18
Alaska Airlines Logo
7:25 am - 1:58 pm
PHL
-
BOI
8h 33m
1 stop
Alaska Airlines Logo
6:04 pm - 6:05 am
BOI
-
PHL
10h 01m
1 stop
$335Alaska Airlines
Sat, Apr 25 - Sat, May 2
United Airlines Logo
6:17 am - 11:49 am
PHL
-
BOI
7h 32m
1 stop
United Airlines Logo
12:30 pm - 12:59 am
BOI
-
PHL
10h 29m
2 stops
$338United Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Boise flights

Get data-powered insights and trends into flights from Philadelphia to Boise to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Boise, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Boise is September, where tickets cost $358 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $592 and $571 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Boise, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Boise, you should book around 4 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$116
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Philadelphia to Boise

When to book flights from Philadelphia to Boise

Are your dates flexible? Find out the best times to travel from Philadelphia to Boise based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Boise

  • What is the cheapest flight from Philadelphia to Boise?

    In the last 3 days, the lowest price for a flight from Philadelphia to Boise was $116 for a one-way ticket and $207 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Boise?

    A passport is not required to fly from Philadelphia to Boise.

  • Which aircraft models fly most regularly from Philadelphia to Boise?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Boise?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Philadelphia and Boise, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Philadelphia to Boise, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Boise are Southwest and Delta. With an average price for the route of $481 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $433 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Philadelphia to Boise?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Boise.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Boise?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Boise?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boise with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and BOI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Boise?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boise from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Philadelphia to Boise

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Boise. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Boise? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4324 reviews
8.6Crew
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
Airline reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

10.0 ExcellentMartie, Mar 2026
LGB - BNA
Read more Southwest reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

the plane was so hot!! the air-conditioning was barely blowing. The flight was delayed, and we had to sit on the hot plane before take off for an extended amount of time, waiting on international passengers. Would not have been so bad if it was not so hot. They said it would get better after take off, but it did not.

They are always late and seats was also not having working charger

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

Everything you need to know for your flight from Philadelphia to Boise

Information on your arrival and departure airports