July is the cheapest month to fly this route, with average fares around $181 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $258 | $224 | Peak | |
| June 2026 | $212 | $128 | ||
| July 2026 | $181 | $128 | Best | |
| August 2026 | $190 | $169 |
Departing on Tuesday offers the lowest average fares at $177. Saturday departures are the most expensive at $231, a difference of $54.
The best time to fly is July. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Chicago to Las Vegas is July, with average round-trip fares around $181. The lowest fare found in July is $128.
Tuesday departures are the cheapest, averaging $177 round trip. The most expensive day is Saturday at $231.
Based on current pricing trends, booking for July travel offers the best value. Avoid May if possible, as fares average $258 compared to $181 in the cheapest month. June is a solid middle-ground option at $212.
Flying in July instead of May can save you approximately $77 per round trip. The cheapest month averages $181 while the most expensive averages $258.
Airlines, flight times, price calendar, and more for Chicago to Las Vegas
View ORD → LAS Details