Cheap flights from Washington, D.C. Dulles Intl Airport to Miami from $57

The month of September is, on average, the cheapest month to fly to Miami from Washington, D.C. Dulles Intl Airport, with most prices found around $164. If you are unable to visit Miami during the month of September, then departing from Washington, D.C. Dulles Intl Airport during the month October is also very affordable. Most momondo users find prices during this month for around $179.

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Miami is on a Monday when prices can be found for as low as $322. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Miami on Tuesday is $433.

In the evening is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Miami when you can find flight prices for as low as $231. Flying to Miami 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 $429. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Miami from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Miami for around $226 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Miami from Washington, D.C. Dulles Intl Airport for as low as $176 on momondo.

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

United Airlines is the most popular carrier operating from Washington, D.C. Dulles Intl to Miami

United Airlines, Frontier and Delta are the top three most popular airlines that fly to Miami from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Miami. Keep in mind that there are 6 different airlines that fly to Miami on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between Washington, D.C. and Miami have experienced a delay on any given week. The average delay length over the past 12 months has been 153 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday 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 9% of their flights experiencing any sort of delay.

4 flights are operational daily from Washington, D.C. Dulles Intl Airport to Miami as of March 2026. The most popular departure time for this route is 8:00AM, with 50% of flights per day taking off at noon.

As of March 2026, 28 flights take off from Washington, D.C. Dulles Intl Airport and land in Miami each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.