BOI - PHL

$111 Find Cheap Flights from Boise to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Philadelphia departing on 4/19. 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 Philadelphia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Philadelphia, 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 Boise to Philadelphia, 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
$363
Typical prices: $531-$330
American Airlines
Sat 5/16Sat 5/23
BOI - PHL • 1 stop
Cheapest one-way
$111
Typical prices: $174-$308
Frontier
Sun 4/19
BOI - PHL • 1 stop
Top airlines
Cheapest • from $363 (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 Boise and Philadelphia. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $460 (round-trip)
Shortest trip • 6h 41m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Philadelphia!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Philadelphia (BOI-PHL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Philadelphia 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 Boise to Philadelphia

Sat, May 16 - Sat, May 23
American Airlines Logo
6:26 pm - 5:38 am
BOI
-
PHL
9h 12m
1 stop
American Airlines Logo
7:05 am - 3:07 pm
PHL
-
BOI
10h 02m
1 stop
$363American Airlines
Sat, May 16 - Sat, May 23
American Airlines Logo
6:26 pm - 5:38 am
BOI
-
PHL
9h 12m
1 stop
American Airlines Logo
9:08 am - 3:07 pm
PHL
-
BOI
7h 59m
1 stop
$367American Airlines
Mon, Apr 20 - Wed, Apr 22
Southwest Logo
4:20 pm - 12:35 am
BOI
-
PHL
6h 15m
1 stop
Southwest Logo
7:30 am - 3:25 pm
PHL
-
BOI
9h 55m
2 stops
$372Southwest
Mon, Apr 27 - Mon, May 4
Delta Logo
11:35 pm - 9:25 am
BOI
-
PHL
7h 50m
1 stop
Delta Logo
2:59 pm - 8:29 pm
PHL
-
BOI
7h 30m
1 stop
$377Delta
Mon, Apr 20 - Wed, Apr 22
Delta Logo
6:16 pm - 9:25 am
BOI
-
PHL
13h 09m
2 stops
Delta Logo
10:31 am - 8:29 pm
PHL
-
BOI
11h 58m
2 stops
$378Delta
Mon, Apr 27 - Mon, May 4
Delta Logo
8:40 pm - 8:55 am
BOI
-
PHL
10h 15m
2 stops
Delta Logo
2:59 pm - 8:29 pm
PHL
-
BOI
7h 30m
1 stop
$382Delta
Tue, Apr 28 - Sat, May 2
Alaska Airlines Logo
6:08 pm - 6:02 am
BOI
-
PHL
9h 54m
1 stop
Alaska Airlines Logo
7:22 am - 3:33 pm
PHL
-
BOI
10h 11m
1 stop
$398Alaska Airlines
Fri, Apr 17 - Mon, Apr 20
American Airlines Logo
6:26 pm - 7:00 am
BOI
-
PHL
10h 34m
1 stop
American Airlines Logo
3:58 pm - 11:41 pm
PHL
-
BOI
9h 43m
1 stop
$401American Airlines
Tue, Jun 2 - Thu, Jun 4
Southwest Logo
3:15 pm - 11:55 pm
BOI
-
PHL
6h 40m
1 stop
Southwest Logo
4:45 pm - 1:05 am
PHL
-
BOI
10h 20m
2 stops
$403Southwest
Fri, Apr 17 - Mon, Apr 20
Delta Logo
8:40 pm - 11:39 am
BOI
-
PHL
12h 59m
2 stops
Delta Logo
6:54 pm - 11:57 pm
PHL
-
BOI
7h 03m
1 stop
$406Delta
Booking Insights

KAYAK's insights & trends for Boise to Philadelphia flights

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to Philadelphia, 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 Boise to Philadelphia is January, where tickets cost $371 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $628 and $604 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to Philadelphia, 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 Boise to Philadelphia, you should book around 3 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$111
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Boise to Philadelphia

When to book flights from Boise to Philadelphia

Are your dates flexible? Find out the best times to travel from Boise to Philadelphia 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 Boise to Philadelphia

  • What is the cheapest flight from Boise to Philadelphia?

    In the last 3 days, the lowest price for a flight from Boise to Philadelphia was $111 for a one-way ticket and $363 for a round-trip.

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

    No

  • Which airports will I be using when flying from Boise to Philadelphia?

    On your way to Philadelphia, you’ll fly out from Boise Air Term. Gowen Fld. You’ll be landing at Philadelphia.

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

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

  • Which airline alliances offer flights from Boise to Philadelphia?

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

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

    The two airlines most popular with KAYAK users for flights from Boise to Philadelphia are Southwest and Delta. With an average price for the route of $496 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 $455 and an overall rating of 7.9.

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

    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 Boise to Philadelphia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Boise 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 Boise to Philadelphia?

    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 Philadelphia with an airline and back to Boise with another airline. Booking your flights between Boise and PHL 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 Boise to Philadelphia?

    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 Philadelphia from Boise 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 Boise to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Boise to Philadelphia. 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 Boise to Philadelphia? 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 4329 reviews
8.0Comfort
7.5Entertainment
8.1Boarding
8.6Crew
7.0Food
Airline reviews

Had a great flight. Delayed takeoff, but comfortable. Snacks were good.

10.0 ExcellentMelissa, Mar 2026
MSY - LGA
Read more Southwest reviews

Had a great flight. Delayed takeoff, but comfortable. Snacks were good.

Love them will get a Southwest card to track my points and keep flying with them. My family and I were pleased with the services.

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Southwest continues to do less for more money. Flight attendants used to be fun and friendly. But now it’s like they don’t even see you. Such a shame.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

I liked it better when you were truer to your roots Am paying more for less fun

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.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

I am still at the Airport! Delayed Delayed and Delyaed

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

Awful. No counter attendants. No dinner offered due to delays.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

Awful. Original flight was delayed 5 hours. Had to to take a connecting flight instead of direct. Had a 4 hour layover. I missed all of my morning meetings getting in 5 hours later than I was supposed to and had to change to take a later flight the next day to get them back in which cia time another $150.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

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

Information on your arrival and departure airports