Frontier offers extra comfort seats with 32” separation for added legroom on longer flights.
Early morning flights have a better chance of taking off and arriving on time.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $256 (Frontier) |
One-way from | $103 (Kiwi.com) |
Popular in | November |
Cheapest in | May |
Average price | $430 |
Good round-trip deal | $367 or less |
Good one-way deal | $218 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Wed 4/15
11:32 am-4:54 pm
1 stop8h 22m
Las Vegas Harry Reid Intl
Tue 4/21
7:05 pm-5:35 am
1 stop7h 30m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Sat 4/11
6:55 am-12:15 pm
1 stop8h 20m
Las Vegas Harry Reid Intl
Tue 4/14
12:50 am-10:36 am
1 stop6h 46m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Wed 2/25
9:41 am-5:49 pm
2 stops11h 08m
Las Vegas Harry Reid Intl
Wed 3/4
12:14 pm-11:44 pm
1 stop8h 30m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Sat 4/11
3:45 pm-9:50 pm
2 stops9h 05m
Las Vegas Harry Reid Intl
Tue 4/21
11:55 pm-10:50 am
1 stop7h 55m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Sat 1/24
7:06 pm-9:36 am
1 stop17h 30m
Las Vegas Harry Reid Intl
Tue 1/27
12:05 pm-6:03 pm
1 stop26h 58m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Sat 1/24
7:06 pm-9:36 am
1 stop17h 30m
Las Vegas Harry Reid Intl
Wed 1/28
1:43 pm-6:03 pm
1 stop25h 20m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Mon 2/16
6:30 am-6:00 pm
2 stops14h 30m
Las Vegas Harry Reid Intl
Wed 2/18
8:55 am-8:20 pm
2 stops8h 25m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Wed 3/25
5:30 am-11:35 am
2 stops9h 05m
Las Vegas Harry Reid Intl
Wed 4/1
10:15 am-10:40 pm
2 stops9h 25m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Sat 2/14
4:10 pm-9:50 pm
2 stops8h 40m
Las Vegas Harry Reid Intl
Sat 2/21
10:55 am-9:55 pm
2 stops8h 00m
PhiladelphiaLas Vegas
PHL - LAS
PHLLAS
Philadelphia
Wed 2/11
6:10 am-12:50 pm
2 stops9h 40m
Las Vegas Harry Reid Intl
Sat 2/14
5:40 am-5:00 pm
2 stops8h 20m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
The best time to book flights from Philadelphia to Las Vegas is 27 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, January is the cheapest month in which you can book a flight from Philadelphia to Las Vegas (average of $78). Flying from Philadelphia to Las Vegas in July is currently the most expensive (average of $136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Unlike at noon, when flights are generally more expensive, you can save up to 35% on flights from Philadelphia to Las Vegas by exploring options for tickets in the evening.
Travelers seeking maximum savings on their Philadelphia to Las Vegas flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 18% of weekly flights between Philadelphia and Las Vegas have experienced delays in the past year, with the average delay time being 170 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Spirit Airlines have had the lowest number of delays on this route, with just 15% of flights being delayed.
Chicago (MDW) – chosen by Cheapflights users on 17% of 1-stop itineraries from Philadelphia to Las Vegas on Cheapflights.
Los Angeles (LAX) is the most affordable 1-stop option, with an average round-trip price of $171.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 30m.
Flights via Chicago (MDW) offer the fastest connection on this route, with an average layover time of 1h 35m.
Boarding
Crew
Food
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Crew
Food
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Crew
Food
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Crew
Food
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Crew
Food
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Crew
Food
Entertainment
Overall
Comfort
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$105 | Average$226 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$106 | Average$242 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$375 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$421 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$193 | Average$460 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$194 | Average$366 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$198 | Average$476 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$235 | Average$394 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$390 | FlexibilityNo cancel fee | On-timeN/A |