PHL - BOI

$140 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 7/6. 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
$252
Typical prices: $378-$516
Frontier
Mon 7/13Thu 7/16
PHL - BOI • 1 stop
Cheapest one-way
$140
Typical prices: $248-$389
Frontier
Mon 7/6
PHL - BOI • 1 stop
Top airlines
Cheapest • from $252 (round-trip)
Best reviews • 7.9 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 $439 (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 2 weeks in advance save around 44% 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

Mon, Jul 13 - Thu, Jul 16
Frontier Logo
8:37 pm - 12:29 pm
PHL
-
BOI
17h 52m
1 stop
Frontier Logo
1:24 pm - 11:49 am
BOI
-
PHL
20h 25m
1 stop
$252Frontier
Wed, Aug 12 - Thu, Aug 20
Frontier Logo
12:44 pm - 12:29 pm
PHL
-
BOI
25h 45m
1 stop
Frontier Logo
12:24 pm - 5:39 am
BOI
-
PHL
15h 15m
1 stop
$253Frontier
Tue, Oct 6 - Tue, Oct 13
Alaska Airlines Logo
7:00 am - 3:23 pm
PHL
-
BOI
10h 23m
1 stop
Alaska Airlines Logo
6:01 pm - 5:40 am
BOI
-
PHL
9h 39m
1 stop
$300Alaska Airlines
Sat, Aug 22 - Sat, Aug 29
American Airlines Logo
5:00 am - 11:16 am
PHL
-
BOI
8h 16m
1 stop
American Airlines Logo
2:58 pm - 11:59 pm
BOI
-
PHL
7h 01m
1 stop
$301American Airlines
Fri, Aug 7 - Mon, Aug 10
American Airlines Logo
1:40 pm - 10:40 pm
PHL
-
BOI
11h 00m
1 stop
American Airlines Logo
3:19 pm - 11:59 pm
BOI
-
PHL
6h 40m
1 stop
$304American Airlines
Fri, Sep 18 - Fri, Sep 25
Delta Logo
6:55 pm - 11:58 pm
PHL
-
BOI
7h 03m
1 stop
Delta Logo
6:44 pm - 6:05 am
BOI
-
PHL
9h 21m
1 stop
$307Delta
Tue, Jul 21 - Sun, Jul 26
Multiple Airlines Logo
7:33 am - 3:26 pm
PHL
-
BOI
9h 53m
1 stop
Multiple Airlines Logo
1:24 pm - 11:49 am
BOI
-
PHL
20h 25m
1 stop
$312Multiple Airlines
Thu, Sep 3 - Sat, Sep 19
American Airlines Logo
1:40 pm - 10:40 pm
PHL
-
BOI
11h 00m
1 stop
American Airlines Logo
3:21 pm - 12:12 am
BOI
-
PHL
6h 51m
1 stop
$330American Airlines
Wed, Jul 15 - Mon, Jul 20
American Airlines Logo
5:38 pm - 11:21 pm
PHL
-
BOI
7h 43m
1 stop
American Airlines Logo
3:10 pm - 12:59 am
BOI
-
PHL
7h 49m
1 stop
$335American Airlines
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
3:05 pm - 11:10 pm
PHL
-
BOI
10h 05m
2 stops
Southwest Logo
6:00 am - 6:00 pm
BOI
-
PHL
10h 00m
2 stops
$340Southwest
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 July.

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 $364 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $601 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 2 weeks before departure, which saves you about 44% 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$140
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 30% increase in price.
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 5 days, the lowest price for a flight from Philadelphia to Boise was $140 for a one-way ticket and $252 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 $556 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $419 and an overall rating of 7.8.

  • 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.
7.9
SouthwestOverall score based on 4242 reviews
8.0Comfort
8.1Boarding
7.5Entertainment
7.0Food
8.6Crew
Airline reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

2.0 MediocreIrene, Jun 2026
DEN - SFO
Read more Southwest reviews

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

Crew was rude, flight was late, wifi didn't work, no food, basically nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Flight was constantly delayed with significant changes in time, it was supposed to get to Colorado Springs at 8:30 PM but it got there after midnight.

For my birthday trip this was my second time ever flying, this trip was the best.

I really wish that SW would ask anyone with a carry-on to wait while those who don’t have to access the overhead bins are boarded. Then, reverse that when the plane arrives. Those without the need to clog up the aisle retrieving their bags from the overhead bins wait for those exiting the plane without needing to clog up. The aisle.

We boarded the flight and set two and a half hours on the jetway. Would have been better if they had not boarded us at all. Plane was hot and it was limited ability to access the restrooms or get a drink of water. Very unpleasant experience

The actual flight was great! The 3 hour delay not so much.

Southwest is a garbage airline and the people who fly it are garbage people.

Boarding was easy. Plane wasn’t crowded. Plenty of space. Flight was on time. Crew was pleasant.

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

The crew was very inconsiderate and rude. My flight was scheduled to depart at 6:00am. I received a call from the crew at 5:40am, asking if I was going to make the flight because I was the only one that hasn't boarded yet and boarding ends at 5:50am. I let them know that I will be at the gate in a few minutes, before the 5:50am cutoff. When I arrived at the gate at 5:45am the gate was closed. Departing early on last minute notice without having all passengers on board is inconsiderate and unprofessional.

FA was a bit strange and dodgy not very characteristic of Delta

Connection flights should be spaced out farther because too close I missed my connection.

The flight was way too HOT! And the plane did not have any in-flight TV entertainment.

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Having to up charge for a seat assignment is not good. Delta can do better

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

We splurged and decided to fly first class. Seats were roomy. But flight crew arrived late to the airport. That delayed our flight. Most of the passengers had to try to make connections flights. I felt bad for them. We checked 4 bags. We got three from the baggage claim carousel. 4th one was lost. Delta online help wasn’t good. Baggage claim staff were sympathetic and nice but we waited around for almost 2 hours and it had t been found. They did find it several hours later and we had to drive back to airport to retrieve it. I won’t be splurging on 1st. Lass again anytime soon. I think we got worse service. I am also not a huge fan of delta but we have family in ATL so we don’t have a ton of choice. What should have been an easy flight turned into a stressful event due to flight crew tardiness and baggage mishandling.

My flight consistently said it was on time and the plane didn’t arrive until after 30 minutes after take off and nothing was announced to passengers

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Smoothly flight, pleasant flight attendants. I wish there were better food choices.

A three (3) hour flight should have meal service in First Class, not just potato chips!

Flight was on time, crew were excellent. For some reason our originally selected seats were changed. We had to re-choose our seats when we checked in online and options were limited. One of our two checked bags we placed on the wrong carousel. It was only be shear luck that I saw it. That cost us 20 minutes of wasted time. So much for the “priority” tags. They are meaningless, and have been ever since they were implemented. I wish you would do the save some money and stop using them.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

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.

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