Cheap flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. from $140

In general, January is the cheapest month to fly from Phoenix Sky Harbor Intl Airport 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 $311.

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 $576. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport for around $796.

Flying to Washington, D.C. Dulles Intl Airport from Phoenix Sky Harbor Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $532 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 $711 on average. Flights to Washington, D.C. Dulles Intl Airport from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl - Washington, D.C. Dulles Intl flight prices

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Phoenix Sky Harbor Intl Airport 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 $446 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 Sky Harbor Intl Airport for as low as $358 on momondo.

There are 4 cabin classes available to choose from on Phoenix Sky Harbor Intl Airport 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.

You could potentially save up to 17% on your flight if you consider stops on a Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport flight.

As of June 2026, prices for Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport flights are approximately 5% cheaper when compared to flights at the same time last year.

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Phoenix Sky Harbor Intl 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 Sky Harbor Intl Airport according to our data. United Airlines is the first choice among our users, with 67% 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 130 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights at night 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 8% of their flights experiencing any sort of delay.

Las Vegas (LAS) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $241.

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 8h 17m.

Las Vegas (LAS) has the shortest average layover time for this route: 1h 43m.

As of June 2026, there are 6 flights per day flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 8:00AM, with 95% of flights taking off at noon.

The number of flights available between Phoenix Sky Harbor Intl Airport and Washington, D.C. Dulles Intl Airport is 46 per week as of June 2026. The most frequent departure day is Thu, with 17% of weekly flights leaving on this day.