BIL - PHL

$175 Find Cheap Flights from Billings to Philadelphia - 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 Billings to Philadelphia departing on 9/8. 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 Billings 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 Billings to Philadelphia, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$349
Typical prices: $406-$495
Delta
Thu 9/17Mon 9/21
BIL - PHL • 1 stop
Cheapest one-way
$175
Typical prices: $267-$395
Alaska Airlines
Tue 9/8
BIL - PHL • 1 stop
Top airlines
Cheapest • from $349 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Billings and Philadelphia. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $414 (round-trip)
Shortest trip • 6h 28m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
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 Billings to Philadelphia (BIL-PHL)

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

Thu, Sep 17 - Mon, Sep 21
Delta Logo
6:33 pm - 6:05 am
BIL
-
PHL
9h 32m
1 stop
Delta Logo
6:59 pm - 11:15 pm
PHL
-
BIL
6h 16m
1 stop
$349Delta
Fri, Sep 4 - Mon, Sep 7
American Airlines Logo
1:13 pm - 10:51 pm
BIL
-
PHL
7h 38m
1 stop
American Airlines Logo
5:43 am - 11:50 am
PHL
-
BIL
8h 07m
1 stop
$429American Airlines
Tue, Sep 1 - Sat, Sep 5
Alaska Airlines Logo
7:20 pm - 5:40 am
BIL
-
PHL
8h 20m
1 stop
Alaska Airlines Logo
7:02 am - 6:49 pm
PHL
-
BIL
13h 47m
1 stop
$437Alaska Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
2:29 pm - 11:44 pm
BIL
-
PHL
7h 15m
1 stop
United Airlines Logo
3:48 pm - 9:00 pm
PHL
-
BIL
7h 12m
1 stop
$449United Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
5:07 am - 5:54 pm
BIL
-
PHL
10h 47m
2 stops
United Airlines Logo
3:48 pm - 10:07 pm
PHL
-
BIL
8h 19m
1 stop
$454United Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
5:07 am - 5:54 pm
BIL
-
PHL
10h 47m
2 stops
United Airlines Logo
10:34 am - 10:07 pm
PHL
-
BIL
13h 33m
2 stops
$460United Airlines
Mon, Jul 13 - Tue, Jul 21
Delta Logo
6:34 pm - 6:15 am
BIL
-
PHL
9h 41m
1 stop
Delta Logo
12:02 pm - 11:30 pm
PHL
-
BIL
13h 28m
2 stops
$469Delta
Fri, Sep 4 - Mon, Sep 7
Alaska Airlines Logo
3:42 pm - 3:45 pm
BIL
-
PHL
22h 03m
1 stop
Alaska Airlines Logo
7:02 am - 11:38 am
PHL
-
BIL
30h 36m
1 stop
$472Alaska Airlines
Mon, Jul 13 - Tue, Jul 21
Delta Logo
6:34 pm - 8:41 am
BIL
-
PHL
12h 07m
2 stops
Delta Logo
12:02 pm - 11:30 pm
PHL
-
BIL
13h 28m
2 stops
$474Delta
Thu, Sep 17 - Mon, Sep 21
Alaska Airlines Logo
7:29 pm - 5:40 am
BIL
-
PHL
8h 11m
1 stop
Alaska Airlines Logo
4:48 pm - 6:49 pm
PHL
-
BIL
28h 01m
2 stops
$477Alaska Airlines
Booking Insights

KAYAK's insights & trends for Billings to Philadelphia flights

Get data-powered insights and trends into flights from Billings 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 Billings to Philadelphia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Billings 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 Billings to Philadelphia is November, where tickets cost $0 (return) on average. On the other hand, the most expensive months are October and August, where the average cost of round-trip tickets is $855 and $635 respectively.

Good to know

Low seasonJune
Cheapest flight$175
Best time to beat the crowds with an average 63% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Billings to Philadelphia

When to book flights from Billings to Philadelphia

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

  • What is the cheapest flight from Billings to Philadelphia?

    In the last 5 days, the lowest price for a flight from Billings to Philadelphia was $175 for a one-way ticket and $349 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

  • Which airline alliances offer flights from Billings to Philadelphia?

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

  • Which is the best airline for flights from Billings to Philadelphia, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Billings to Philadelphia are Delta and United Airlines. With an average price for the route of $444 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $512 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Billings 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 Billings to Philadelphia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Billings 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 Billings 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 Billings with another airline. Booking your flights between Billings 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 Billings 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 Billings up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Billings to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Billings 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 Billings 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.
7.8
DeltaOverall score based on 8449 reviews
7.8Comfort
7.2Food
8.1Boarding
7.8Entertainment
8.5Crew
Airline reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

4.0 OkayMichelle, Jun 2026
ATL - PIT
Read more Delta reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Delayed. Hot. Passenger next to me was so large I couldn’t move.

2+hrs delay without any reason provided and a cramped flight

Originally, I was booked in economy. I paid several hundred additional dollars to upgrade to first class. Then I paid several more hundred dollars to change my flight to a slightly earlier flight. I asked if the changed flight would also seat me in first class, and I was told that it would. When I boarded the plane, however, I was seated in economy. So, I paid $500-600 more than I paid for my original ticket for an upgrade and a changed flight - received the changed flight (which was nice), but did not receive the upgrade. So, I was not completely satisfied.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

My seat was moved closer to the front of the cabin since I had requested wheelchair assistance to the gate.

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

Didn’t make the flight. My connecting flight was an hour late and I missed the flight. You rerouted me thru Atlanta and I arrived in Rome over 10 hour after my original Rome arrival time. You also left my luggage in Atlanta and it took you three day to get my bag to meI spent 4 days in the same cloths, I had packed my prescriptions in the lost bag and went 3 days withoutMy heart meds.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

I still prefer Delta, but Delta doesn’t fly to State College PA.

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Nothing bad to say about the actual crew or airline. It was nice to have a complimentary FULL can of soda, as well as a snack. Blankets and earbuds were also provided at no cost for this red eye flight. I especially appreciated the free WiFi and movie selection with the Bluetooth option. It helped the flight pass more quickly. No matter who you fly, boarding and disembarking are always SUCH a pain. As I mentioned, this is on the passengers and not the crew!!

Flight attendants rude and impolite… flight delayed by almost 5 hours.

Ok so apparently the new policy on United Airlines is that customers in the main cabin should NEVER be served more than once and besides picking up trash there should NEVER be another interaction with the customer for any reason.

I cancelled this flight 2 days before departure but I followed your texts and emails and IF you were correct this flight turned into a nightmare.

The seats. The seat in front of me was awful and when the guy sat down, it flew back and hit my head when I was putting my backpack under the seat, It didn't make for a pleasant experience,

Cancelled flight. Still waiting to get home for grand daughter’s graduation .

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

When I booked my flight a month ago - I selected a seat. That seat was NOT the one I ended up with when I checked into my flight the day before. This is the second time this has occurred. So, I checked my next flight on Wednesday and Thursday and no seat was assigned. Poor, very poor customer 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.

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

Information on your arrival and departure airports