Cheap flights from Chicago O'Hare Intl Airport to Las Vegas from $111

The month of January is, on average, the cheapest month to fly to Las Vegas from Chicago O'Hare Intl Airport, with most prices found around $254. The month of February is another great option to travel to Las Vegas, with average flight prices from Chicago O'Hare Intl Airport averaging around $298.

Our data shows that Sunday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $300. Flights from Chicago O'Hare Intl Airport to Las Vegas on a Friday will generally be more expensive and average around $378. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

The cheapest time of day to fly to Las Vegas is in the evening when flights can be purchased for as low as $274. Flights to Las Vegas are more costly in the afternoon, with an average ticket price of $367. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Chicago O'Hare Intl to Las Vegas Harry Reid Intl for the best Chicago O'Hare Intl - Las Vegas Harry Reid Intl flight prices

You are more likely to see cheaper flights to Las Vegas from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $339 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Chicago O'Hare Intl Airport for as low as $291 on momondo.

There are 4 cabin classes available to choose from on Chicago O'Hare Intl Airport to Las Vegas flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta, United Airlines, and Sun Country Air are the most popular carriers operating from Chicago O'Hare Intl to Las Vegas Harry Reid Intl

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Las Vegas from Chicago O'Hare Intl Airport according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 7 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.

Historically, on average around 20% of flights between Chicago and Las Vegas have experienced a delay on any given week. The average delay length over the past 12 months has been 161 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

As of October 2026, 23 flights take off from Chicago O'Hare Intl Airport and land in Las Vegas each day. The most common flight departure time for this route is 9:00PM, with 42% of daily flights taking off in the evening.

As of October 2026, 164 flights take off from Chicago O'Hare Intl Airport and land in Las Vegas each week. The most common flight departure day for this route is Fri, with 28% of weekly flights taking off on this day.