Cheap flights from Seattle to Las Vegas from C$ 94

If you’re not able to fly to Las Vegas in January, then September is your next best option. Flight prices from Seattle to Las Vegas during September average around C$ 276.

The cheapest day to depart from Seattle to Las Vegas is on a Sunday. Travellers who choose to depart for Las Vegas on a Sunday will often find tickets for as low as C$ 183. The most expensive day to fly to Las Vegas is Friday, with ticket prices averaging around C$ 315.

The cheapest time of day to fly to Las Vegas is in the evening when flights can be purchased for as low as C$ 215. Try not to purchase tickets at noon because they tend to be around C$ 294. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 C$ 288 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 C$ 229 on momondo.

There are 2 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.

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

Spirit Airlines, Frontier and Alaska Airlines are the top three most popular airlines that fly to Las Vegas from Seattle according to our data. Spirit Airlines is the first choice among our users, with 35% of people opting to fly with this airline when travelling to Las Vegas. Keep in mind that there are 6 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 17% 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 127 minutes.

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

Tuesday is statistically the day of the week that experiences the fewest 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 has had the least delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

As of February 2026, there are 11 flights per day flying from Seattle to Las Vegas. The most common time of day flights depart is 12:00p.m., with 41% of flights taking off in the afternoon.

The number of flights available between Seattle and Las Vegas is 79 per week as of February 2026. The most frequent departure day is Wed, with 54% of weekly flights leaving on this day.