Cheap flights from Seattle to Phoenix from $106

In general, January is the cheapest month to fly from Seattle to Phoenix Sky Harbor Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $187. If you are unable to visit Phoenix Sky Harbor Intl Airport 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 $220.

On average, the least expensive day to fly to Phoenix Sky Harbor Intl Airport from Seattle is on a Saturday. momondo users have found tickets for Saturday departures for as low as $263. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $313. These prices are subject to change though, so be sure to set up a Price Alert for flights to Phoenix Sky Harbor Intl Airport.

In the evening is the cheapest time of day to fly from Seattle to Phoenix Sky Harbor Intl Airport when you can find flight prices for as low as $254. Flying to Phoenix Sky Harbor Intl Airport in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $297. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Phoenix Sky Harbor Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix Sky Harbor Intl Airport for around $263 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phoenix Sky Harbor Intl Airport from Seattle for as low as $181 on momondo.

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

No. A direct flight is the cheapest option for a flight between Seattle to Phoenix Sky Harbor Intl Airport.

As of September 2026, prices for Seattle to Phoenix Sky Harbor Intl Airport flights are approximately 133% more expensive when compared to flights at the same time last year.

Frontier is the most popular carrier operating from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to Phoenix Sky Harbor Intl Airport from Seattle according to our data. Alaska Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Phoenix Sky Harbor Intl Airport. Keep in mind that there are 8 different airlines that fly to Phoenix Sky Harbor Intl Airport 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 131 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. Monday 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.

Denver (DEN) was the most common stop: 86% of momondo users choosing 1-stop flights on this route connected there.

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $150.

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 8h 56m.

Denver (DEN) has the shortest average layover time for this route: 5h 43m.

As of September 2026, 20 flights take off from Seattle and land in Phoenix Sky Harbor Intl Airport each day. The most common flight departure time for this route is 6:00PM, with 49% of daily flights taking off in the evening.

140 flights are operational weekly from Seattle to Phoenix Sky Harbor Intl Airport 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.