Cheap flights from Washington, D.C. to Puerto Rico from $72

If you don’t want to visit Puerto Rico in July, then you should wait until May to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $301.

On average, the least expensive day to fly to Puerto Rico from Washington, D.C. is on a Sunday. momondo users have found tickets for Sunday departures for as low as $337. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Wednesday, with ticket prices averaging around $485.

Our most recent data shows that the best time of day to fly to Puerto Rico is at noon. Flights from Washington, D.C. to Puerto Rico during this time can be as low as $238. In contrast, the most expensive time of day to depart to Puerto Rico is in the afternoon when prices are around $436.

Fly from Washington, D.C. Dulles Intl to San Juan Luis Munoz Marin Intl for the best Washington, D.C. - Puerto Rico flight prices

You are more likely to see cheaper flights to Puerto Rico from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around $388 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from Washington, D.C. for as low as $349 on momondo.

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

Spirit Airlines, Frontier, and United Airlines are the most popular carriers operating from Washington, D.C. to Puerto Rico

Frontier, Spirit Airlines and United Airlines are the top three most popular airlines that fly to Puerto Rico from Washington, D.C. according to our data. Frontier is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Puerto Rico. Keep in mind that there are 7 different airlines that fly to Puerto Rico on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between Washington, D.C. and Puerto Rico have experienced a delay on any given week. The average delay length over the past 12 months has been 132 minutes.

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

Wednesday 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 16% of their flights experiencing any sort of delay.

As of March 2026, 4 flights take off from Washington, D.C. and land in Puerto Rico each day. The most common flight departure time for this route is 8:00AM, with 52% of daily flights taking off at noon.

As of March 2026, 30 flights take off from Washington, D.C. and land in Puerto Rico each week. The most common flight departure day for this route is Thu, with 30% of weekly flights taking off on this day.