Cheap Flights from Philadelphia to Rapid City Regional

Compare Philadelphia to Rapid City Regional flight deals

Find the cheapest month or even day of the year to fly to Rapid City Regional

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Find the cheapest month to fly from Philadelphia to Rapid City Regional

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

Philadelphia to Rapid City Regional: Alternative routes

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

Philadelphia to Rapid City: Flight information

The things to know before you go.
Cheapest flight foundRs69,961
Cheapest month to flySeptember

Finding cheap flights from Philadelphia to Rapid City Regional: Frequently asked questions

The best price we found for a return flight from Philadelphia to Rapid City Regional is Rs97,156. 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.
Currently, there are no airlines that fly direct from Philadelphia to Rapid City Regional. But we found flights with one stop from Rs97,156.
As of February 2026, there are no flights flying from Philadelphia to Rapid City Regional.
The cheapest month to fly from Philadelphia to Rapid City Regional is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to Rapid City Regional Airport on Wednesday, 27 May 2026.
No airlines currently offer direct flights between Philadelphia and Rapid City Regional Airport. Most routes have one or more stops.
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 Rapid City Regional 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Rapid City is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Rapid City Regional is United .

Travelling from Philadelphia to Rapid City Regional Airport (RAP): What you need to know

  • Your adventure begins at one of Philadelphia's main airports, Philadelphia International Airport (PHL) or Trenton-Mercer Airport (TTN). Check out your options for booking a flight from Philadelphia to Rapid City Regional Airport (RAP) leaving from either of these.

  • The timezone in Rapid City is UTC-6, which is two hours behind Philadelphia. Rapid City Regional Airport is located in Rapid City.

  • To ensure you get on your flight from Philadelphia to RAP, allow plenty of time for things like check-in and baggage drop. Arriving two hours before international departures and one hour before domestic flights is the standard rule.

  • Longer lines at security and check-in are likely if you're jetting off during high season, so allow even more breathing space. The recommendation for peak times? Get there up to four hours early for international flights and at least two hours for domestic departures.

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Located around 19 kilometres from the centre of Philadelphia, PHL can be reached in about 15 minutes by car, depending on traffic. The journey by public transport will take roughly 45 minutes.

  • In search of a comfortable hotel near Philadelphia International Airport? If you're catching an early flight from Philadelphia to Rapid City Regional Airport, these accommodation options will have you sleeping moments from your check-in counter:

  • Of all flights departing from Philadelphia International Airport, 78.93% arrive on time at their destination.

  • The address for PHL is 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

  • TTN is around 56 kilometres from central Philadelphia. It'll take you 40 minutes or so to get to the airport if you're driving from the city centre. Public transport takes roughly 1 hour 45 minutes.

  • Want to enjoy an extra night away before boarding your Philadelphia to RAP flight? Check in to a hotel near Trenton-Mercer Airport before your adventure officially starts. These stays are expecting you:

  • Trenton-Mercer Airport has earned its reputation for punctuality. 82.45% of flights leaving here make it to their final destination as planned.

  • You'll find TTN at Scotch Road, Terminal Building.

About Rapid City Regional Airport (RAP)

How to find the cheapest flights from Philadelphia to Rapid City Regional Airport (RAP)

  • Currently, Rs69,961 is the best price we've found for a one-way ticket from Philadelphia to Rapid City Regional Airport. The cheapest price for a return flight is Rs97,156. Remember fares can change due to demand at the time of booking.

  • Booking in advance is often the key to scoring a cheap flight from Philadelphia to RAP. Fares tend to rise as demand increases, so the closer you get to departure, the more you'll likely pay.

  • If you have some flexibility with your trip dates, try using the 'Whole month' search tool. It'll show you the lowest price across each month when searching for your Philadelphia to Rapid City Regional Airport ticket.

  • There's no need to check every day to find out if prices have dropped when you create a Price Alert. We'll notify you when a new deal shows up on flight tickets from Philadelphia to RAP.

  • Tailor your travel plans using filters. Pick your ideal arrival and departure times, total journey duration and airlines. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from Philadelphia to Rapid City Regional Airport.

The best time to fly from Philadelphia to Rapid City Regional Airport (RAP)

  • Picture the kind of break you want when deciding the best time to fly. February is the quietest month to visit Rapid City. August is when most people book flights from Philadelphia to Rapid City Regional Airport (RAP), which may be perfect if you're chasing more excitement.

  • Before locking in your Philadelphia to RAP flight ticket, consider what kind of weather works for you. July is the warmest month in Rapid City, with temperatures ranging from 14ºC to 32ºC.

  • If you like travelling in cooler conditions, look for a cheap ticket from Philadelphia to Rapid City Regional Airport in February when temperatures are between -16ºC and 7ºC.

More about Rapid City

Explore more of the United States

  • You've seen Rapid City, now it's time to explore other parts of the United States. Travel about 290 kilometres south-west to Casper to tick off its top sights. From Nicolaysen Art Museum to Casper Mountain Lookout and White Water Park, there's plenty to keep you on the go.

  • Around 193 kilometres west of Rapid City, Gillette is another essential stop in the United States. No visit is complete without checking out Eldridge Park, Gillette Brewing Company and The O-SO Fun Dog Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.