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Flights from Boise to Philadelphia

Find flight deals from Boise to Philadelphia for the next 3 months. Book one way flights from $129 or round trip flights from $189.

      • BOI 1:59 PM
        9h 20m
        1 stop
        PHL 1:19 AM
        Boise - Philadelphia | Sat, Aug 15 | Delta Air Lines
        PHL 7:00 PM
        6h 59m
        1 stop
        BOI 11:59 PM
        Philadelphia - Boise | Mon, Aug 17 | Delta Air Lines
        $189 $341
        45% off
        45% off
        $341 $189
      • BOI 6:45 PM
        9h 20m
        1 stop
        PHL 6:05 AM
        Boise - Philadelphia | Fri, Aug 14 | Delta Air Lines
        PHL 7:00 PM
        6h 59m
        1 stop
        BOI 11:59 PM
        Philadelphia - Boise | Mon, Aug 17 | Delta Air Lines
        $217 $341
        36% off
        36% off
        $341 $217
      • BOI 2:11 PM
        8h 30m
        1 stop
        PHL 12:41 AM
        Boise - Philadelphia | Sat, Sep 12 | Delta Air Lines
        PHL 5:45 AM
        9h 44m
        1 stop
        BOI 1:29 PM
        Philadelphia - Boise | Sat, Sep 19 | Delta Air Lines
        $291 $341
        15% off
        15% off
        $341 $291
      • BOI 1:59 PM
        9h 20m
        1 stop
        PHL 1:19 AM
        Boise - Philadelphia | Thu, Aug 27 | Delta Air Lines
        PHL 6:55 PM
        7h 4m
        1 stop
        BOI 11:59 PM
        Philadelphia - Boise | Mon, Aug 31 | Delta Air Lines
        $292
        14% off
        $341 $292
      • BOI 1:59 PM
        9h 20m
        1 stop
        PHL 1:19 AM
        Boise - Philadelphia | Mon, Aug 24 | Delta Air Lines
        PHL 6:55 PM
        7h 4m
        1 stop
        BOI 11:59 PM
        Philadelphia - Boise | Mon, Aug 31 | Delta Air Lines
        $292
        14% off
        $341 $292
      • BOI 5:30 AM
        6h 30m
        1 stop
        PHL 2:00 PM
        Boise - Philadelphia | Tue, Sep 1 | Delta Air Lines
        PHL 6:55 PM
        7h 4m
        1 stop
        BOI 11:59 PM
        Philadelphia - Boise | Fri, Sep 4 | Delta Air Lines
        $302
        11% off
        $341 $302
      • BOI 3:16 PM
        6h 43m
        1 stop
        PHL 11:59 PM
        Boise - Philadelphia | Mon, Aug 24 | American Airlines
        PHL 5:43 AM
        10h 37m
        1 stop
        BOI 2:20 PM
        Philadelphia - Boise | Mon, Aug 31 | American Airlines
        $305
        11% off
        $341 $305
      • BOI 2:58 PM
        7h 1m
        1 stop
        PHL 11:59 PM
        Boise - Philadelphia | Sat, Aug 29 | American Airlines
        PHL 5:00 AM
        8h 16m
        1 stop
        BOI 11:16 AM
        Philadelphia - Boise | Sat, Sep 5 | American Airlines
        $306
        10% off
        $341 $306
      • BOI 6:45 PM
        9h 20m
        1 stop
        PHL 6:05 AM
        Boise - Philadelphia | Fri, Aug 28 | Delta Air Lines
        PHL 2:31 PM
        9h 26m
        1 stop
        BOI 9:57 PM
        Philadelphia - Boise | Thu, Sep 3 | Delta Air Lines
        $311
        9% off
        $341 $311
      • BOI 6:07 PM
        9h 22m
        1 stop
        PHL 5:29 AM
        Boise - Philadelphia | Fri, Jul 24 | Delta Air Lines
        PHL 5:40 AM
        7h 17m
        1 stop
        BOI 10:57 AM
        Philadelphia - Boise | Thu, Jul 30 | Delta Air Lines
        $320
        6% off
        $341 $320
      • BOI 1:00 PM
        17h 25m
        1 stop
        PHL 2:00 PM
        Boise - Philadelphia | Sat, Jul 18 | Normal Airline
        PHL 3:00 PM
        6h
        Nonstop
        BOI 4:00 PM
        Philadelphia - Boise | Mon, Jul 20 | Normal Airline
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      • BOI 1:24 PM
        14h 15m
        1 stop
        PHL 5:39 AM
        Boise - Philadelphia | Sun, Jul 26 | Frontier Airlines
        $129 $163
        21% off
        21% off
        $163 $129
      • BOI 1:24 PM
        14h 15m
        1 stop
        PHL 5:39 AM
        Boise - Philadelphia | Thu, Jul 30 | Frontier Airlines
        $131 $163
        20% off
        20% off
        $163 $131
      • BOI 6:07 PM
        9h 22m
        1 stop
        PHL 5:29 AM
        Boise - Philadelphia | Sat, Aug 1 | Delta Air Lines
        $145 $163
        11% off
        11% off
        $163 $145
      • BOI 5:30 AM
        7h 13m
        1 stop
        PHL 2:43 PM
        Boise - Philadelphia | Wed, Jul 29 | Delta Air Lines
        $145
        11% off
        $163 $145
      • BOI 11:10 PM
        8h 28m
        1 stop
        PHL 9:38 AM
        Boise - Philadelphia | Sun, Aug 2 | Delta Air Lines
        $148
        9% off
        $163 $148
      • BOI 6:07 PM
        9h 22m
        1 stop
        PHL 5:29 AM
        Boise - Philadelphia | Mon, Jul 20 | Delta Air Lines
        $150
        8% off
        $163 $150
      • BOI 11:10 PM
        8h 28m
        1 stop
        PHL 9:38 AM
        Boise - Philadelphia | Mon, Aug 10 | Delta Air Lines
        $150
        8% off
        $163 $150
      • BOI 11:10 PM
        9h 14m
        1 stop
        PHL 10:24 AM
        Boise - Philadelphia | Fri, Aug 21 | Delta Air Lines
        $150
        8% off
        $163 $150
      • BOI 11:10 PM
        8h 57m
        1 stop
        PHL 10:07 AM
        Boise - Philadelphia | Fri, Jul 17 | Delta Air Lines
        $150
        8% off
        $163 $150
      • BOI 11:10 PM
        8h 28m
        1 stop
        PHL 9:38 AM
        Boise - Philadelphia | Thu, Aug 6 | Delta Air Lines
        $153
        6% off
        $163 $153
      • BOI 1:00 PM
        17h 25m
        1 stop
        PHL 2:00 PM
        Boise - Philadelphia | Sat, Jul 18 | Normal Airline
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Find cheap airlines flights from Boise to Philadelphia

You can choose from 1 airlines that fly from Boise to Philadelphia, including Delta Air Lines, Frontier Airlines has lowest fares on this route.
Delta Air Lines logo Delta Air Lines
Airlines are determined based on actual purchased flight tickets from Boise to Philadelphia according to previous 12 months data from Trip.com.

Flight Info | Boise to Philadelphia

The distance between Boise and Philadelphia is approximately 3,391.6 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is September.

Cheapest one-way flight price$129
Cheapest round-trip ticket price$189
Off-season for travelSeptember
Peak season for travelJuly
Flight distance3,391.6 km
Popular airlineDelta Air Lines
Flight statistics for the Boise–Philadelphia route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Boise to Philadelphia (BOI-PHL)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $129 on Cheapest nonstop routes (e.g. BOI to PHL on Sun, Jul 26), while Delta Air Lines offers Cheapest nonstop round-trips from $189 departing on Sat, Aug 15 and returning on Mon, Aug 17.
  • At the moment, several airlines serve connecting flights from Boise to Philadelphia, including: Delta Air Lines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Boise to Philadelphia is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Boise to Philadelphia, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Jul 26, with one-way flights priced at just $129.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Philadelphia travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Boise to Philadelphia is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Boise to Philadelphia on July 26, 2026 with Frontier Airlines, with prices starting at $129.
  • You can land at any one of the following hubs in Philadelphia, with Boise Airport to Philadelphia International Airport (BOI-PHL) is by far the most common option on this route: Philadelphia International Airport (PHL) Trenton Mercer Airport (TTN).
  • The time difference between Philadelphia and Boise is 2h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.