Cheap flights from Indianapolis to Washington, D.C. from $66

The month of August is, on average, the cheapest month to fly to Washington, D.C. from Indianapolis, with most prices found around $95. If you’re not able to fly to Washington, D.C. in August, then September is your next best option. Flight prices from Indianapolis to Washington, D.C. during September average around $97.

On average, the least expensive day to fly to Washington, D.C. from Indianapolis is on a Friday. momondo users have found tickets for Friday departures for as low as $371. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Indianapolis to Washington, D.C. for around $744.

In the afternoon is the cheapest time of day to fly from Indianapolis to Washington, D.C. when you can find flight prices for as low as $347. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $867. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Indianapolis to Washington, D.C. Reagan-National for the best Indianapolis - Washington, D.C. flight prices

You are more likely to see cheaper flights to Washington, D.C. from Indianapolis when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $318 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Indianapolis for as low as $242 on momondo.

There are 4 cabin classes available to choose from on Indianapolis to Washington, D.C. 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 20% on your flight if you consider stops on a Indianapolis to Washington, D.C. flight.

As of July 2026, prices for Indianapolis to Washington, D.C. flights are approximately 20% more expensive when compared to flights at the same time last year.

Southwest, Delta, and United Airlines are the most popular carriers operating from Indianapolis to Washington, D.C.

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Washington, D.C. from Indianapolis according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Chicago (MDW) was the most common stop: 25% of momondo users choosing 1-stop flights on this route connected there.

Flights via Detroit (DTW) offer the lowest average round-trip price of $209.

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 4h 02m.

Detroit (DTW) has the shortest average layover time for this route: 0h 45m.

The number of flights available between Indianapolis and Washington, D.C. is 17 per day as of July 2026. The most frequent departure time is 10:00AM, with 46% of daily flights leaving at noon.

As of July 2026, there are 122 flights per week flying from Indianapolis to Washington, D.C.. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.