Cheap flights from Seattle to Las Vegas from $53

The month of January is, on average, the cheapest month to fly to Las Vegas from Seattle, with most prices found around $176. The month of September is another great option to travel to Las Vegas, with average flight prices from Seattle averaging around $199.

Our data shows that Monday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $186. Flights from Seattle to Las Vegas on a Friday will generally be more expensive and average around $260. 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 afternoon when flights can be purchased for as low as $223. Flights to Las Vegas are more costly at noon, with an average ticket price of $233. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl for the best Seattle/Tacoma Intl - Las Vegas Harry Reid Intl flight prices

You are more likely to see cheaper flights to Las Vegas from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $217 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Seattle for as low as $181 on momondo.

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Las Vegas Harry Reid Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl

Alaska Airlines, Frontier and Delta are the top three most popular airlines that fly to Las Vegas from Seattle according to our data. Alaska Airlines is the first choice among our users, with 35% 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 16% of flights between Seattle and Las Vegas have experienced a delay on any given week. The average delay length over the past 12 months has been 125 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. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

The number of flights available between Seattle and Las Vegas is 16 per day as of March 2026. The most frequent departure time is 8:00PM, with 38% of daily flights leaving in the afternoon.

As of March 2026, there are 117 flights per week flying from Seattle to Las Vegas. The most common day of the week flights depart is Sun, with 36% of flights taking off on this day.