Cheap flights from Phoenix to Washington, D.C. from $170

In general, January is the cheapest month to fly from Phoenix to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $292. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $429.

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $563. 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. Dulles Intl Airport for around $800.

Flying to Washington, D.C. Dulles Intl Airport from Phoenix in the evening is the least expensive time of day to depart. momondo users have found prices as low as $507 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $714 on average. Flights to Washington, D.C. Dulles Intl Airport from Phoenix in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Phoenix when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $489 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Phoenix for as low as $371 on momondo.

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

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

United Airlines, Southwest and Frontier are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Phoenix 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 Washington, D.C. Dulles Intl Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% 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 134 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the morning 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 September 2026, 4 flights take off from Phoenix and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 8:00AM, with 100% of daily flights taking off at noon.

As of September 2026, there are 29 flights per week flying from Phoenix to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.