Cheap Flights from Philadelphia PA to Boise ID from $226

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Flight deals from Philadelphia to Boise

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to Boise Airport? If you want to travel next month, round-trip fares start from $244. Find the lowest prices on one-way and round-trip tickets right here.

Boise.$226 per passenger.Departing Sat, May 23, returning Sun, May 31.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Sat, May 23, arriving in Boise.Inbound indirect flight with Frontier Airlines, departing from Boise on Sun, May 31, arriving in Philadelphia International.Price includes taxes and charges.From $226, select.

Boise.$244 per passenger.Departing Mon, Jun 1, returning Tue, Jun 9.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Mon, Jun 1, arriving in Boise.Inbound indirect flight with Frontier Airlines, departing from Boise on Tue, Jun 9, arriving in Philadelphia International.Price includes taxes and charges.From $244, select.

Boise.$280 per passenger.Departing Wed, May 27, returning Wed, Jun 3.Round-trip flight with United.Outbound indirect flight with United, departing from Philadelphia International on Wed, May 27, arriving in Boise.Inbound indirect flight with United, departing from Boise on Wed, Jun 3, arriving in Philadelphia International.Price includes taxes and charges.From $280, select.

Boise.$280 per passenger.Departing Wed, Aug 12, returning Sat, Aug 15.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Philadelphia International on Wed, Aug 12, arriving in Boise.Inbound indirect flight with Delta, departing from Boise on Sat, Aug 15, arriving in Philadelphia International.Price includes taxes and charges.From $280, select.

Boise.$288 per passenger.Departing Sat, Oct 17, returning Tue, Oct 20.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Philadelphia International on Sat, Oct 17, arriving in Boise.Inbound indirect flight with Delta, departing from Boise on Tue, Oct 20, arriving in Philadelphia International.Price includes taxes and charges.From $288, select.

Boise.$315 per passenger.Departing Sat, Aug 29, returning Sun, Sep 6.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Philadelphia International on Sat, Aug 29, arriving in Boise.Inbound indirect flight with Delta, departing from Boise on Sun, Sep 6, arriving in Philadelphia International.Price includes taxes and charges.From $315, select.

Boise.$315 per passenger.Departing Thu, Sep 24, returning Tue, Sep 29.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Philadelphia International on Thu, Sep 24, arriving in Boise.Inbound indirect flight with Southwest Airlines, departing from Boise on Tue, Sep 29, arriving in Philadelphia International.Price includes taxes and charges.From $315, select.

Boise.$355 per passenger.Departing Mon, Jun 22, returning Thu, Jul 2.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Philadelphia International on Mon, Jun 22, arriving in Boise.Inbound indirect flight with Frontier Airlines, departing from Boise on Thu, Jul 2, arriving in Philadelphia International.Price includes taxes and charges.From $355, select.

Boise.$359 per passenger.Departing Fri, Jul 10, returning Sun, Jul 12.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Philadelphia International on Fri, Jul 10, arriving in Boise.Inbound indirect flight with Delta, departing from Boise on Sun, Jul 12, arriving in Philadelphia International.Price includes taxes and charges.From $359, select.

Boise.$404 per passenger.Departing Fri, Jul 31, returning Sat, Aug 8.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Philadelphia International on Fri, Jul 31, arriving in Boise.Inbound indirect flight with Southwest Airlines, departing from Boise on Sat, Aug 8, arriving in Philadelphia International.Price includes taxes and charges.From $404, select.

Boise.$460 per passenger.Departing Wed, Dec 30, returning Sun, Jan 3.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Philadelphia International on Wed, Dec 30, arriving in Boise.Inbound indirect flight with Delta, departing from Boise on Sun, Jan 3, arriving in Philadelphia International.Price includes taxes and charges.From $460, select.

Find the cheapest month to fly from Philadelphia to Boise

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to Boise flights are currently cheapest in May.

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Philadelphia to Boise: Alternative routes

Compare routes from Philadelphia to Boise below. You may find an airport to fly into that's cheaper, faster, or easier than Boise.

Boise

5km from central Boise

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from $226

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Philadelphia to Boise: Flight information

The things to know before you go.

Cheapest flight found	$226
Cheapest month to fly	May

Finding cheap flights from Philadelphia to Boise: Frequently asked questions

How much are round-trip flights from Philadelphia to Boise?

The best price we found for a round-trip flight from Philadelphia to Boise is $226. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Philadelphia to Boise?

Currently, there are no airlines that fly direct from Philadelphia to Boise. But we found flights with one stop from $226.

How many flights are there a week from Philadelphia to Boise?

There are no flights flying from Philadelphia to Boise, as of May 2026.

When is the cheapest time to fly from Philadelphia to Boise?

The cheapest month to fly from Philadelphia to Boise is usually May.

Which upcoming date is cheapest to fly from Philadelphia to Boise Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to Boise Airport on Saturday, May 23, 2026.

Can I get a direct flight from Philadelphia to Boise Airport?

No airlines currently offer direct flights between Philadelphia and Boise Airport. Most routes have one or more stops.

How can I find the best flight deal to Boise?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Boise but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Boise?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Boise is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Philadelphia to Boise?

The cheapest airline that flies to Boise is Frontier Airlines.

Traveling from Philadelphia to Boise Air Terminal (Gowen Field) Airport (BOI): What you need to know

Start your trip planning by looking up the best departure point for your flight from Philadelphia to Boise Air Terminal (Gowen Field) Airport (BOI). Explore the options for setting off from Philadelphia International Airport (PHL) or Trenton-Mercer Airport (TTN), two of the city's main airports.
Boise is two hours behind Philadelphia. Boise Air Terminal (Gowen Field) Airport is located in Boise, which operates on the UTC-6 timezone.
Leave plenty of time to get on your flight from Philadelphia to BOI. A good rule of thumb is to arrive two hours before international departures and an hour ahead for domestic flights.
High season means busier airports, so aim to get there even earlier. Give yourself at least two hours before a domestic flight and four hours for international journeys to stick to your schedule.

Airports in Philadelphia

Philadelphia International Airport (PHL)

PHL is around 19 kilometers from central Philadelphia. If you're catching a cab, ride-sharing or driving from the center, it'll take you 15 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the travel time to be around 45 minutes.
Catching an early flight from Philadelphia to Boise Air Terminal (Gowen Field) Airport? Avoid the stress of rushing to the terminal (and get some extra shut-eye) by picking one of these stays close to Philadelphia International Airport:
78.93% of flights leaving from Philadelphia International Airport land at their destination on time.
PHL is located at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

TTN is about 56 kilometers from central Philadelphia. It'll take you 40 minutes or so to get to the airport driving from the city center. Public transport takes roughly 1 hour 45 minutes.
Got an early start? You might like to check in to one of these accommodation options near Trenton-Mercer Airport the day before your Philadelphia to BOI flight:
Flights from Trenton-Mercer Airport have a track record for punctuality, with 82.45% of them touching down within the expected time frame.
The street address for TTN is Scotch Road, Terminal Building.

About Boise Air Terminal (Gowen Field) Airport (BOI)

Consider booking a hotel close to BOI if you have a late flight from Philadelphia to Boise Air Terminal (Gowen Field) Airport. Pick one of these accommodation options and avoid the hassle of a long transfer:
Pick up a Boise Air Terminal (Gowen Field) Airport rental car and explore Boise and beyond with your own wheels. Budget, Alamo and Avis are popular providers you can book with here.
To lock in the lowest price, book your vehicle around one week ahead of your Philadelphia to Boise Air Terminal (Gowen Field) Airport flight.
The street address for BOI is 3201 Airport Way.

Getting from Boise Air Terminal (Gowen Field) Airport (BOI) to central Boise

Boise Air Terminal (Gowen Field) Airport is around 6 kilometers from central Boise. How long it takes to get to the center by car rental or cab will depend on the time of day. Do some research before you go.
It'll take around 1 hour 35 minutes if you're traveling by public transport.

How to find the cheapest flights from Philadelphia to Boise Air Terminal (Gowen Field) Airport (BOI)

Currently, $111 is the lowest price we've found for a one-way ticket from Philadelphia to Boise Air Terminal (Gowen Field) Airport. The cheapest price for a return flight is $226. Remember fares can change due to availability at the time of booking.
Booking in advance is often the key to scoring a cheap flight from Philadelphia to BOI. Fares tend to rise as seats fill up, so the closer your departure date, the more you'll likely pay.
The 'Whole month' tool will show you the cheapest Philadelphia to Boise Air Terminal (Gowen Field) Airport tickets throughout the month. It's a great way to snap up a bargain if your plans are flexible.
There's no need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment there's a better deal on plane tickets from Philadelphia to BOI.
Nail down a great price on a flight from Philadelphia to Boise Air Terminal (Gowen Field) Airport with the help of the filters. Pick your preferred departure and arrival times, airlines and number of stops. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest.'

The best time to fly from Philadelphia to Boise Air Terminal (Gowen Field) Airport (BOI)

May is the quietest month for flights from Philadelphia to Boise Air Terminal (Gowen Field) Airport (BOI), while July is the busiest. Find the best time to go to Boise based on whether you prefer a lively atmosphere or a more laid-back vibe.
When booking your Philadelphia to BOI plane ticket, consider the kind of weather forecast you're hoping for. July is the warmest month in Boise, with temperatures ranging from 15ºC (59ºF) to 35ºC (95ºF).
If you want cooler conditions, look for a cheap ticket from Philadelphia to Boise Air Terminal (Gowen Field) Airport in January when temperatures are between -11ºC (12ºF) and 5ºC (41ºF).

More about Boise

Start your Boise trip right by choosing the ideal place to stay. Once you've booked your flight from Philadelphia to Boise Air Terminal (Gowen Field) Airport, check out our selection of accommodation options including:
There are so many things to explore in this city, it can be tricky to work out where to begin. Cathedral Of The Rockies, Boise River Rafting and Boise Depot are major attractions which should be on any good Boise itinerary.

Explore more of the United States

Boise has loads to offer, but there are so many other parts of the United States just waiting to be explored. Around 177 kilometers south-east of Boise, a visit to Twin Falls will keep you on the go. Don't miss top attractions like Sawtooth National Forest, Twin Falls and Base jump the bridge.
La Grande is another sought-after destination in the United States and is around 241 kilometers north-west of Boise. No trip is complete without a visit to Our Lady of the Valley, La Grande Skatepark and Jefferson Street Depot.