PHL - BOI

$156 Find Cheap Flights from Philadelphia to Boise - Compare and Save

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 9/11. 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

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Everything you should know

Cheapest round-trip
$213
Typical prices: $299-$516
Frontier
Mon 8/31Tue 9/8
PHL - BOI • 1 stop
Cheapest one-way
$156
Typical prices: $234-$362
Alaska Airlines
Fri 9/11
PHL - BOI • 1 stop
Top airlines
Cheapest • from $207 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Philadelphia and Boise. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $457 (round-trip)
Shortest trip • 6h 40m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 50% compared to booking last minute.
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When to travel
Cheapest • 21% price drop
Most popular
Good to know
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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, Aug 31 - Tue, Sep 8
Frontier Logo
8:37 pm - 12:29 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
17h 52m1 stop Denver Intl
Frontier Logo
1:24 pm - 5:39 amBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
14h 15m1 stop Denver Intl
$213Frontier
Tue, Sep 29 - Tue, Oct 27
Alaska Airlines Logo
7:00 am - 2:22 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
9h 22m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:04 pm - 5:41 amBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
9h 37m1 stop Seattle/Tacoma Intl
$311Alaska Airlines
Wed, Sep 2 - Thu, Sep 24
Delta Logo
6:15 am - 12:49 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
8h 34m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:59 pm - 5:50 amBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
9h 51m1 stop Seattle/Tacoma Intl
$311Delta
Sat, Aug 29 - Thu, Sep 24
Delta Logo
7:05 am - 3:18 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
10h 13m1 stop Seattle/Tacoma Intl
Delta Logo
5:59 pm - 5:50 amBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
9h 51m1 stop Seattle/Tacoma Intl
$311Delta
Wed, Sep 30 - Tue, Oct 6
American Airlines Logo
5:00 am - 1:00 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
10h 00m1 stop Dallas/Fort Worth
American Airlines Logo
2:41 pm - 12:25 amBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
7h 44m1 stop Dallas/Fort Worth
$311American Airlines
Tue, Sep 1 - Wed, Sep 23
American Airlines Logo
1:40 pm - 10:40 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
11h 00m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
8:05 am - 9:06 pmBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
11h 01m1 stop Phoenix Sky Harbor Intl
$311American Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
6:15 am - 1:45 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
9h 30m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
12:37 pm - 9:38 pmBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
7h 01m1 stop Chicago O'Hare Intl
$316United Airlines
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
6:25 am - 11:28 amPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
7h 03m1 stop Chicago O'Hare Intl
United Airlines Logo
5:00 am - 5:54 pmBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
10h 54m2 stops Denver Intl Chicago O'Hare Intl
$316United Airlines
Tue, Oct 27 - Tue, Nov 3
Southwest Logo
6:00 am - 2:45 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
10h 45m2 stops Nashville Intl Denver Intl
Southwest Logo
11:40 am - 11:25 pmBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
9h 45m2 stops Phoenix Sky Harbor Intl Denver Intl
$321Southwest
Sat, Sep 5 - Tue, Sep 15
Southwest Logo
2:10 pm - 9:35 pmPHL  Philadelphia-BOI Boise Air Term. Gowen Fld
9h 25m1 stop Denver Intl
Southwest Logo
6:00 am - 6:00 pmBOI  Boise Air Term. Gowen Fld-PHL Philadelphia
10h 00m2 stops Las Vegas Harry Reid Intl Chicago Midway
$334Southwest
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 August.

Flight prices are below average for this route right now.

Flights to Boise from Philadelphia usually cost between $300 and $556 in August.
The lowest price found in the past 5 days was $213 on Frontier (Aug 31-Sep 8).

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 April, where tickets cost $373 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $616 and $597 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 3 weeks before departure, which saves you about 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low season

January

Cheapest flight

$156
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 27% 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 $156 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 $555 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 $405 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.
8.0
SouthwestOverall score based on 4218 reviews
7.0Food
8.1Boarding
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

Fairly good - the seats seemed more comfortable on this flight. The staff out of Detroit were quite friendly. But they directed us to the wrong carousel for luggage. :(

8.0 ExcellentDavid, Aug 2026
Read more Southwest reviews

Fairly good - the seats seemed more comfortable on this flight. The staff out of Detroit were quite friendly. But they directed us to the wrong carousel for luggage. :(

Just crazy with times being pushed and pushed and pushed and gate crew at Philly super rude and unprofessional with many under stress with delays.

I liked the new boarding process. I thought the buyup options (legroom, early boarding) to be easy to request and reasonably priced. All the Southwest team from gate to in-flight were so nice.

My experience will Southwest was good. I wish there was more entertainment and the boarding process was slow at time but other than that my experience was great definitely will be flying with SouthWest again.

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.

This a short easy flight. No food or drink but that was not an issue since we were only in the air for 35 minutes.

I missed the flight because the Minneapolis flight was 49 minutes LATE, and the Boise flight LEFT 24 minutes EARLY!

No Internet, no backseat screen, no nothing. I bought a Delta ticket and ended up on American Airlines. How did that happen?

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

Like the fact that the boarding was expedited. But the delay and chaos around the onboarding was not appreciated.

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

It was great. All the crew were professional and nice.

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.

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.

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.

American notified via app that the flight was delayed. However, when I went to the gate, they were already boarding and had not updated communications that they had pulled the flight time back. They made the entire flight re-check in which by this time I had lost my exit row seat and ended up in a middle seat. As a 4 decade flyer of American and Exec Plat, my expectations for the company are that the customer service would be better. This unfortunately is no longer a strong point for any of the major airlines including American. They are basically city buses flying at 30 thousand feet.

Very good, boarded and took off on time and landed early

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

Quick flight again no one illness why there were multiple delays and changing of the gate number.

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

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