Cheap flights from Phoenix to Washington, D.C. from $122

The month of September is, on average, the cheapest month to fly to Washington, D.C. from Phoenix, with most prices found around $112. If you’re not able to fly to Washington, D.C. in September, then December is your next best option. Flight prices from Phoenix to Washington, D.C. during December average around $116.

On average, the least expensive day to fly to Washington, D.C. from Phoenix is on a Friday. momondo users have found tickets for Friday departures for as low as $525. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix to Washington, D.C. for around $764.

In the evening is the cheapest time of day to fly from Phoenix to Washington, D.C. when you can find flight prices for as low as $469. Flying to Washington, D.C. 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 $617. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Washington, D.C. from Phoenix when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $469 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Phoenix for as low as $370 on momondo.

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

Alaska Airlines, Frontier, and United Airlines are the most popular carriers operating from Phoenix to Washington, D.C.

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Washington, D.C. from Phoenix according to our data. American Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Phoenix and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

As of June 2026, 14 flights take off from Phoenix and land in Washington, D.C. each day. The most common flight departure time for this route is 8:00AM, with 69% of daily flights taking off at noon.

100 flights are operational weekly from Phoenix to Washington, D.C. as of June 2026. The most popular departure day for this route is Thu, with 18% of flights per week taking off on this day.