August is the cheapest month to fly this route, with average fares around $238 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $286 | $259 | ||
| June 2026 | $291 | $250 | Peak | |
| July 2026 | $253 | $230 | ||
| August 2026 | $238 | $230 | Best |
Departing on Tuesday offers the lowest average fares at $252. Thursday departures are the most expensive at $290, a difference of $38.
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 Boston to Las Vegas is August, with average round-trip fares around $238. The lowest fare found in August is $230.
Tuesday departures are the cheapest, averaging $252 round trip. The most expensive day is Thursday at $290.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $291 compared to $238 in the cheapest month. May is a solid middle-ground option at $286.
Flying in August instead of June can save you approximately $53 per round trip. The cheapest month averages $238 while the most expensive averages $291.
Airlines, flight times, price calendar, and more for Boston to Las Vegas
View BOS → LAS Details