BOI - PHL

$126 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 4/2. 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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Everything you should know

Cheapest round-trip
$300
Overall average: $377
Frontier
Sun 4/12Tue 4/14
BOI - PHL • 1 stop
Cheapest one-way
$126
Typical prices: $174-$308
Frontier
Thu 4/2
BOI - PHL • 1 stop
Top airlines
Delta
Cheapest • from $351 (round-trip)
Southwest
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
Insights
Insights
Top layover airports
Salt Lake City (SLC)
Cheapest • Avg $442 (round-trip)
Minneapolis (MSP)
Shortest trip • 6h 39m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 25% price drop
May
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 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

Sun, Apr 12 - Tue, Apr 14
Multiple Airlines Logo
12:03 pm - 5:31 am
BOI
-
PHL
15h 28m
1 stop
Multiple Airlines Logo
8:53 pm - 11:08 am
PHL
-
BOI
40h 15m
2 stops
$300Multiple Airlines
Thu, Apr 30 - Wed, May 6
Delta Logo
8:30 am - 5:42 pm
BOI
-
PHL
7h 12m
1 stop
Delta Logo
2:59 pm - 8:29 pm
PHL
-
BOI
7h 30m
1 stop
$351Delta
Thu, Apr 30 - Wed, May 6
Delta Logo
8:30 am - 5:42 pm
BOI
-
PHL
7h 12m
1 stop
Delta Logo
5:30 am - 2:26 pm
PHL
-
BOI
10h 56m
2 stops
$356Delta
Wed, May 6 - Sun, May 10
Delta Logo
5:34 am - 2:01 pm
BOI
-
PHL
6h 27m
1 stop
Delta Logo
6:59 am - 2:43 pm
PHL
-
BOI
9h 44m
1 stop
$360Delta
Wed, May 6 - Sun, May 10
Delta Logo
8:40 pm - 9:00 am
BOI
-
PHL
10h 20m
2 stops
Delta Logo
6:59 am - 2:43 pm
PHL
-
BOI
9h 44m
1 stop
$365Delta
Sun, Apr 12 - Tue, Apr 14
Alaska Airlines Logo
6:04 pm - 6:05 am
BOI
-
PHL
10h 01m
1 stop
Alaska Airlines Logo
6:47 pm - 10:21 am
PHL
-
BOI
17h 34m
1 stop
$377Alaska Airlines
Thu, Apr 23 - Mon, Apr 27
Alaska Airlines Logo
6:08 pm - 6:02 am
BOI
-
PHL
9h 54m
1 stop
Alaska Airlines Logo
6:58 pm - 11:02 pm
PHL
-
BOI
30h 04m
1 stop
$383Alaska Airlines
Sun, Apr 12 - Tue, Apr 14
Delta Logo
7:30 pm - 10:26 am
BOI
-
PHL
12h 56m
2 stops
Delta Logo
9:42 am - 8:00 pm
PHL
-
BOI
12h 18m
2 stops
$387Delta
Thu, Apr 23 - Mon, Apr 27
Southwest Logo
4:20 pm - 12:35 am
BOI
-
PHL
6h 15m
1 stop
Southwest Logo
2:15 pm - 11:30 pm
PHL
-
BOI
11h 15m
2 stops
$390Southwest
Tue, Mar 17 - Wed, Mar 18
Southwest Logo
6:05 am - 5:25 pm
BOI
-
PHL
9h 20m
2 stops
Southwest Logo
5:30 am - 10:30 am
PHL
-
BOI
7h 00m
1 stop
$397Southwest
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.

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 February and December, where the average cost of round-trip tickets is $733 and $628 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 28% 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$126
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 16% 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 $126 for a one-way ticket and $300 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 $485 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 $439 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 5 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 4299 reviews
7.5Entertainment
8.0Comfort
8.6Crew
7.0Food
8.1Boarding
Airline reviews

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

10.0 ExcellentTy&Steph, Feb 2026
CLT - STL
Read more Southwest reviews

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

Flight was delayed due to crew being not on time

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

The staff was frielndly. The plane was terrible, it was too small and should be decommissioned. There were no back seat screens at all. The only beverages we had a choice from was coffee, tea or water. The only bathroom in the back was behind the flight attendant's jump seat and wasn't working. And I literally felt like I was sitting on top of the guy next to me. It was terribly hot in the plane and we had to sit on the tarmac in Chicago for 1/2 hour due to congestion in Mpls. Wouldn't they have know that before they even boarded us so that we could have sat in comfort in the terminal?

Never got on it. Was re-routed through Detroit and am still in airports 12 hours later waiting for my connecting plane to arrive.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

Very Very late. Subsequent flights left an hour before ours

This is my worse experience with Delta. My colleagues and I were traveling to ICT for work. Usually we connect in Dallas, but this year we decided to book with Delta and connect in Atlanta. We were excited to fly with Delta because we hear great things and Delta is one of my top choices when choosing an airline for travel. On the connecting flights to and from Wichita/Atlanta - it felt hot and uncomfortable on the plane. The plane to ICT was smaller and older and did not have any wi-fi or entertainment. The most terrible experience was at boarding in Atlanta both times traveling to Wichita and then back to Tampa. First on our flight from ATL to ICT - the attendant scanning our boarding pass made us go back to the line when we went up to scan our passes to wait. After a few minutes, she allowed us to come back up to scan but then she asked what boarding zone we were. We told her zone 5, and since we were standing on the wrong side of the small rope partition, she made us go back to stand on the right side. There was another gentleman that came up to board and scan his pass, and she mentioned he was also on the wrong side but she let him go through. Our group had to walk back and forth for no reason, causing an unnecessary delay to board the plane. We have never experienced anything like this, especially when the boarding area was completely empty and everyone already boarded since boarding was earlier than the original boarding time. On our flight from ATL to TPA, the attendants scanning our boarding passes had us scan our passes twice, not explaining to us what was going on. They automatically started tagging our carry on bags and did not explain to us or tell us what was going on and why this was happening. Obviously we knew our bags were being forced to check in but with no reason. There was no announcement or mention and I have never had anyone force me to check in my bag before boarding the plane. We assumed the overhead bins were full but when we boarded the plane, there was a lot of empty bins and a lot of spaces to put our bags. We all were disappointed and frustrated with Delta and will be hesitant to fly Delta again or anytime soon.

Boarding and crew were fantastic, but I paid for a window seat with no window. Seat 11D on a CRJ-900 apparently does not have a window. Lesson learned.

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

it was a very short flight so my expectations were low.

As great a red-eye flight as red-eye flights can be.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

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.

The seat cushions were very worn so they were extremely uncomfortable.

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

Frontier line changes my flight schedule with out my authorization. They never ask me and with out my concern they cut off 4 hours of my vacation they force my to leave 4 hours early from Puerto Rico.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

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

Information on your arrival and departure airports