Cheap flights from Phoenix Sky Harbor Intl Airport to District of Columbia from $135

In general, September is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $112. If you don’t want to visit District of Columbia in September, then you should wait until December to fly from Phoenix Sky Harbor Intl Airport, when ticket prices are also cheap, with an average price of $116.

The cheapest day to depart on your flight to District of Columbia is on a Thursday when prices can be found for as low as $515. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Phoenix Sky Harbor Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $746.

Flying to District of Columbia 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 $462 when looking at flights departing in the evening. Flights to District of Columbia are more costly in the afternoon, with an average ticket price of $624. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to District of Columbia from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $440 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Phoenix Sky Harbor Intl Airport for as low as $358 on momondo.

Alaska Airlines, United Airlines, and Delta are the most popular carriers operating from Phoenix Sky Harbor Intl to District of Columbia

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to District of Columbia from Phoenix Sky Harbor Intl Airport according to our data. American Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 6 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

The number of flights available between Phoenix Sky Harbor Intl Airport and District of Columbia is 11 per day as of May 2026. The most frequent departure time is 7:00AM, with 40% of daily flights leaving at noon.

The number of flights available between Phoenix Sky Harbor Intl Airport and District of Columbia is 81 per week as of May 2026. The most frequent departure day is Thu, with 16% of weekly flights leaving on this day.