BIL - PHL

$149 Find Cheap Flights from Billings 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 Billings to Philadelphia departing on 4/12. 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
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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
$329
Typical prices: $485-$585
American Airlines
Tue 3/31Sat 4/4
BIL - PHL • 1 stop
Cheapest one-way
$149
Typical prices: $264-$305
Delta
Sun 4/12
BIL - PHL • 1 stop
Top airlines
Cheapest • from $329 (round-trip)
Best reviews • 7.9 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 • 5h 52m (one-way)
Insights
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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 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

Tue, Mar 31 - Sat, Apr 4
American Airlines Logo
5:16 am - 4:55 pm
BIL
-
PHL
9h 39m
1 stop
American Airlines Logo
3:54 pm - 10:59 pm
PHL
-
BIL
9h 05m
1 stop
$329American Airlines
Tue, Mar 31 - Sat, Apr 4
American Airlines Logo
5:16 am - 5:44 pm
BIL
-
PHL
10h 28m
2 stops
American Airlines Logo
3:54 pm - 10:59 pm
PHL
-
BIL
9h 05m
1 stop
$369American Airlines
Tue, Apr 21 - Mon, Apr 27
Delta Logo
6:24 am - 2:01 pm
BIL
-
PHL
5h 37m
1 stop
Delta Logo
2:59 pm - 8:06 pm
PHL
-
BIL
7h 07m
1 stop
$394Delta
Tue, Apr 21 - Mon, Apr 27
Delta Logo
5:20 am - 7:18 pm
BIL
-
PHL
11h 58m
2 stops
Delta Logo
2:59 pm - 8:06 pm
PHL
-
BIL
7h 07m
1 stop
$399Delta
Tue, Mar 31 - Sat, Apr 4
Delta Logo
11:34 am - 11:00 pm
BIL
-
PHL
9h 26m
2 stops
Delta Logo
12:00 pm - 10:29 pm
PHL
-
BIL
12h 29m
2 stops
$429Delta
Sat, May 2 - Tue, May 5
United Airlines Logo
10:35 am - 7:37 pm
BIL
-
PHL
7h 02m
1 stop
United Airlines Logo
10:00 am - 8:57 pm
PHL
-
BIL
12h 57m
2 stops
$464United Airlines
Sat, Apr 11 - Tue, Apr 21
United Airlines Logo
2:35 pm - 11:43 pm
BIL
-
PHL
7h 08m
1 stop
United Airlines Logo
10:00 am - 8:57 pm
PHL
-
BIL
12h 57m
2 stops
$469United Airlines
Sat, Apr 11 - Tue, Apr 21
American Airlines Logo
1:51 pm - 10:47 pm
BIL
-
PHL
6h 56m
1 stop
American Airlines Logo
5:00 am - 1:21 pm
PHL
-
BIL
10h 21m
1 stop
$473American Airlines
Tue, Jul 21 - Fri, Jul 24
Delta Logo
6:25 pm - 5:43 am
BIL
-
PHL
9h 18m
1 stop
Delta Logo
6:30 pm - 10:37 pm
PHL
-
BIL
6h 07m
1 stop
$475Delta
Thu, Apr 23 - Mon, Apr 27
Delta Logo
6:18 pm - 5:59 am
BIL
-
PHL
9h 41m
1 stop
Delta Logo
2:59 pm - 8:06 pm
PHL
-
BIL
7h 07m
1 stop
$479Delta
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.

Which airlines provide the cheapest flights from Billings to Philadelphia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Billings to Philadelphia were found on American Airlines ($329) and Delta ($394).

Good to know

Low seasonApril
Cheapest flight$149
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 8% 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 3 days, the lowest price for a flight from Billings to Philadelphia was $149 for a one-way ticket and $329 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 $471 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $534 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.
7.9
DeltaOverall score based on 8286 reviews
8.5Crew
7.2Food
8.1Boarding
7.9Comfort
7.8Entertainment
Airline reviews

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

2.0 MediocreDouglas, Mar 2026
MSP - SEA
Read more Delta reviews

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It’s always a great time flying with united airlines.

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.

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

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

Information on your arrival and departure airports