Cheap flights from Seattle to Phoenix from $103

If you are unable to visit Phoenix during the month of January, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $219.

On average, the least expensive day to fly to Phoenix from Seattle is on a Saturday. momondo users have found tickets for Saturday departures for as low as $259. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $307.

The cheapest time of day to fly to Phoenix is in the evening when flights can be purchased for as low as $248. In the morning is when there is more demand to fly to Phoenix, so prices are often more expensive at around $294 per ticket.

Fly from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl for the best Seattle/Tacoma Intl - Phoenix flight prices

You are more likely to see cheaper flights to Phoenix from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix for around $262 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phoenix from Seattle for as low as $198 on momondo.

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

Southwest and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Phoenix

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to Phoenix from Seattle according to our data. Alaska Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Phoenix. Keep in mind that there are 8 different airlines that fly to Phoenix on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between Seattle and Phoenix have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening 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, American Airlines have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

As of September 2026, 20 flights take off from Seattle and land in Phoenix each day. The most common flight departure time for this route is 8:00PM, with 39% of daily flights taking off in the evening.

145 flights are operational weekly from Seattle to Phoenix as of September 2026. The most popular departure day for this route is Fri, with 31% of flights per week taking off on this day.