PHL - BOI

$111 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 6/3. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$237
Typical prices: $663-$472
Frontier
Mon 6/1Tue 6/9
PHL - BOI • 1 stop
Cheapest one-way
$111
Typical prices: $221-$313
Frontier
Wed 6/3
PHL - BOI • 1 stop
Top airlines
Cheapest • from $237 (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 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Mon, Jun 1 - Tue, Jun 9
Frontier Logo
8:35 pm - 12:30 pm
PHL
-
BOI
17h 55m
1 stop
Frontier Logo
1:25 pm - 11:47 am
BOI
-
PHL
20h 22m
1 stop
$237Frontier
Mon, Jun 1 - Sun, Jun 7
Frontier Logo
8:35 pm - 12:30 pm
PHL
-
BOI
17h 55m
1 stop
Frontier Logo
1:33 pm - 5:37 am
BOI
-
PHL
14h 04m
1 stop
$246Frontier
Mon, Jun 8 - Thu, Jun 11
Frontier Logo
8:35 pm - 12:30 pm
PHL
-
BOI
17h 55m
1 stop
Frontier Logo
1:25 pm - 5:38 am
BOI
-
PHL
14h 13m
1 stop
$247Frontier
Sat, Aug 22 - Sat, Aug 29
Delta Logo
6:00 am - 12:49 pm
PHL
-
BOI
8h 49m
1 stop
Delta Logo
5:10 am - 4:27 pm
BOI
-
PHL
9h 17m
1 stop
$279Delta
Sat, Aug 22 - Sat, Aug 29
Delta Logo
6:00 am - 12:49 pm
PHL
-
BOI
8h 49m
1 stop
Delta Logo
5:10 am - 7:51 pm
BOI
-
PHL
12h 41m
2 stops
$284Delta
Thu, Sep 3 - Sat, Sep 19
Delta Logo
7:05 am - 2:22 pm
PHL
-
BOI
9h 17m
1 stop
Delta Logo
3:25 pm - 11:40 pm
BOI
-
PHL
6h 15m
1 stop
$289Delta
Sat, Aug 22 - Sat, Aug 29
Delta Logo
7:20 am - 7:00 pm
PHL
-
BOI
13h 40m
2 stops
Delta Logo
5:10 am - 7:51 pm
BOI
-
PHL
12h 41m
2 stops
$290Delta
Sat, Aug 22 - Sat, Aug 29
Delta Logo
7:20 am - 7:00 pm
PHL
-
BOI
13h 40m
2 stops
Delta Logo
5:10 am - 4:27 pm
BOI
-
PHL
9h 17m
1 stop
$294Delta
Sat, Aug 22 - Sat, Aug 29
Delta Logo
7:20 am - 7:00 pm
PHL
-
BOI
13h 40m
2 stops
Delta Logo
5:10 am - 7:51 pm
BOI
-
PHL
12h 41m
2 stops
$300Delta
Wed, Sep 2 - Tue, Sep 8
American Airlines Logo
9:35 am - 4:49 pm
PHL
-
BOI
9h 14m
1 stop
American Airlines Logo
3:04 pm - 11:59 pm
BOI
-
PHL
6h 55m
1 stop
$314American 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.

How much is a round-trip flight from Philadelphia to Boise?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Boise departing in June.

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 $365 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $592 and $592 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 46% 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$111
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 4% 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 $111 for a one-way ticket and $237 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 $488 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 $426 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 4298 reviews
7.0Food
8.0Comfort
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

I'm glad it wasn't only 75% full because I could get a good seat

8.0 ExcellentBobby, May 2026
BNA - GSP
Read more Southwest reviews

I'm glad it wasn't only 75% full because I could get a good seat

if I was good. Not happy that I have to pay extra money to get the seat I need for lake room, but I guess that’s a sign of the times.

Seats were very comfortable. They tilted back. Drinks and snacks were free and served 3 times. Attendants were awesome.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

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.

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

Information on your arrival and departure airports