Cheap flights from Seattle to Las Vegas from $120

The cheapest month to fly to Las Vegas from Seattle is in January. Flight prices, which tend to average around $249, are often lower during this time because this is during the off-season. If you aren’t able to travel to Las Vegas during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $305.

On average, the least expensive day to fly to Las Vegas from Seattle is on a Saturday. momondo users have found tickets for Saturday departures for as low as $313. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Las Vegas is Friday, with ticket prices averaging around $439.

In the afternoon is the cheapest time of day to fly from Seattle to Las Vegas when you can find flight prices for as low as $345. Flying to Las Vegas in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive, with an average ticket price of $439.

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 $345 when searching weeks before you fly. 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 $275 on momondo.

There are 2 cabin classes available to choose from on Seattle to Las Vegas flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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 128 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.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

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

As of July 2026, 32 flights take off from Seattle and land in Las Vegas each day. The most common flight departure time for this route is 20:00, with 38% of daily flights taking off in the evening.

The number of flights available between Seattle and Las Vegas is 229 per week as of July 2026. The most frequent departure day is Tue, with 19% of weekly flights leaving on this day.