Cheap flights from Las Vegas to Washington, D.C. from $138

The month of December is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Las Vegas, with most prices found around $277. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of December, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $417.

The cheapest day to depart from Las Vegas to Washington, D.C. Reagan-National Airport is on a Tuesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Tuesday will often find tickets for as low as $506. Flights from Las Vegas to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $803. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Las Vegas to Washington, D.C. Reagan-National Airport flights are usually those with departure times at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $501. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the morning when prices are around $552.

Fly from Las Vegas Harry Reid Intl to Washington, D.C. Reagan-National for the best Las Vegas Harry Reid Intl - Washington, D.C. Reagan-National flight prices

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $481 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Las Vegas for as low as $308 on momondo.

There are 3 cabin classes available to choose from on Las Vegas to Washington, D.C. Reagan-National 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 24% on your flight if you consider stops on a Las Vegas to Washington, D.C. Reagan-National Airport flight.

As of November 2026, prices for Las Vegas to Washington, D.C. Reagan-National Airport flights are approximately 32% more expensive when compared to flights at the same time last year.

Delta and Southwest are the most popular carriers operating from Las Vegas Harry Reid Intl to Washington, D.C. Reagan-National

Southwest, American Airlines and Frontier are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from Las Vegas according to our data. Southwest is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Reagan-National Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between Las Vegas and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

Generally, flights departing in the early afternoon 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. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, American Airlines have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

Denver (DEN) was the most common stop: 90% of momondo users choosing 1-stop flights on this route connected there.

Flights via Denver (DEN) offer the lowest average round-trip price of $351.

Flights connecting via Kansas City (MCI) have the shortest average one-way travel time: 6h 05m.

Kansas City (MCI) has the shortest average layover time for this route: 0h 55m.

The number of flights available between Las Vegas and Washington, D.C. Reagan-National Airport is 2 per day as of November 2026. The most frequent departure time is 12:00PM, with 66% of daily flights leaving in the afternoon.

The number of flights available between Las Vegas and Washington, D.C. Reagan-National Airport is 18 per week as of November 2026. The most frequent departure day is Mon, with 22% of weekly flights leaving on this day.