Cheap flights from Washington, D.C. Dulles Intl Airport to Phoenix from $172

In general, August is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $349. If you are unable to visit Phoenix Sky Harbor Intl Airport during the month of August, then departing from Washington, D.C. Dulles Intl Airport during the month November is also very affordable. Most momondo users find prices during this month for around $401.

On average, the least expensive day to fly to Phoenix Sky Harbor Intl Airport from Washington, D.C. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $476. 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 Monday because tickets tend to average around $562. 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 afternoon is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport when you can find flight prices for as low as $496. Flying to Phoenix Sky Harbor Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $578. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Washington, D.C. Dulles Intl to Phoenix Sky Harbor Intl for the best Washington, D.C. Dulles Intl - Phoenix Sky Harbor Intl flight prices

You are more likely to see cheaper flights to Phoenix Sky Harbor Intl Airport from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix Sky Harbor Intl Airport for around $445 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 Washington, D.C. Dulles Intl Airport for as low as $377 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport 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 Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport.

As of June 2026, prices for Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport flights are approximately 8% cheaper when compared to flights at the same time last year.

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Phoenix Sky Harbor Intl

United Airlines, Southwest and Frontier are the top three most popular airlines that fly to Phoenix Sky Harbor Intl Airport from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 73% of people opting to fly with this airline when traveling to Phoenix Sky Harbor Intl Airport. Keep in mind that there are 6 different airlines that fly to Phoenix Sky Harbor Intl Airport on a routine basis, so you have a few additional options to choose from.

Atlanta (ATL) was the most common stop: 70% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $214.

Flights connecting via Charlotte (CLT) have the shortest average one-way travel time: 7h 18m.

Charlotte (CLT) has the shortest average layover time for this route: 1h 05m.

The number of flights available between Washington, D.C. Dulles Intl Airport and Phoenix Sky Harbor Intl Airport is 5 per day as of June 2026. The most frequent departure time is 5:00PM, with 100% of daily flights leaving in the afternoon.

As of June 2026, 35 flights take off from Washington, D.C. Dulles Intl Airport and land in Phoenix Sky Harbor Intl Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.