August is the cheapest month to fly this route, with average fares around $240 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $268 | $238 | ||
| June 2026 | $269 | $230 | Peak | |
| July 2026 | $255 | $230 | ||
| August 2026 | $240 | $230 | Best |
Departing on Tuesday offers the lowest average fares at $243. Friday departures are the most expensive at $282, a difference of $39.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Philadelphia to Las Vegas is August, with average round-trip fares around $240. The lowest fare found in August is $230.
Tuesday departures are the cheapest, averaging $243 round trip. The most expensive day is Friday at $282.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $269 compared to $240 in the cheapest month. May is a solid middle-ground option at $268.
Flying in August instead of June can save you approximately $29 per round trip. The cheapest month averages $240 while the most expensive averages $269.
Airlines, flight times, price calendar, and more for Philadelphia to Las Vegas
View PHL → LAS Details