Cheap flights from Washington, D.C. Reagan-National Airport to Phoenix from $121

In general, August is the cheapest month to fly from Washington, D.C. Reagan-National 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 $380. If you are unable to visit Phoenix Sky Harbor Intl Airport during the month of August, then departing from Washington, D.C. Reagan-National Airport during the month September is also very affordable. Most momondo users find prices during this month for around $387.

On average, the least expensive day to fly to Phoenix Sky Harbor Intl Airport from Washington, D.C. Reagan-National Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $441. 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 $532. 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. Reagan-National Airport to Phoenix Sky Harbor Intl Airport when you can find flight prices for as low as $456. 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 $559. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Phoenix Sky Harbor Intl Airport from Washington, D.C. Reagan-National 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 $447 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. Reagan-National Airport for as low as $320 on momondo.

There are 3 cabin classes available to choose from on Washington, D.C. Reagan-National to Phoenix Sky Harbor Intl 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. Reagan-National Airport to Phoenix Sky Harbor Intl Airport.

As of March 2026, prices for Washington, D.C. Reagan-National Airport to Phoenix Sky Harbor Intl Airport flights are approximately 29% more expensive when compared to flights at the same time last year.

Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to Phoenix Sky Harbor Intl

American Airlines, Frontier and Southwest are the top three most popular airlines that fly to Phoenix Sky Harbor Intl Airport from Washington, D.C. Reagan-National Airport according to our data. American Airlines is the first choice among our users, with 75% 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.

Denver (DEN) was the most common stop: 92% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $199.

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 58m.

Boston (BOS) has the shortest average layover time for this route: 1h 24m.

3 flights are operational daily from Washington, D.C. Reagan-National Airport to Phoenix Sky Harbor Intl Airport as of March 2026. The most popular departure time for this route is 7:00AM, with 66% of flights per day taking off at noon.

As of March 2026, 23 flights take off from Washington, D.C. Reagan-National Airport and land in Phoenix Sky Harbor Intl Airport each week. The most common flight departure day for this route is Tue, with 17% of weekly flights taking off on this day.