Cheap flights from Seattle to Las Vegas from £42

In general, January is the cheapest month to fly from Seattle to Las Vegas. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £133. 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 £150.

The cheapest day to depart on your flight to Las Vegas is on a Sunday when prices can be found for as low as £139. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £159.

Our data shows that the cheapest Seattle to Las Vegas flights are usually those with departure times at midday. Our users have found flights to Las Vegas at midday for as low as £69. Flights to Las Vegas are more costly in the morning, with an average ticket price of £191. Departure times in the morning 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 £163 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 £136 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.

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 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 have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

As of March 2026, 16 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 42% of daily flights taking off in the afternoon.

117 flights are operational weekly from Seattle to Las Vegas as of March 2026. The most popular departure day for this route is Sat, with 37% of flights per week taking off on this day.