Cheap flights from Chicago O'Hare Intl Airport to Washington, D.C. from $128

The month of December is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Chicago O'Hare Intl Airport, with most prices found around $361. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of December, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $363.

The cheapest day to depart from Chicago O'Hare Intl Airport to Washington, D.C. Reagan-National Airport is on a Saturday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Saturday will often find tickets for as low as $309. Flights from Chicago O'Hare Intl Airport to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $498. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Chicago O'Hare Intl Airport to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the morning. Our users have found flights to Washington, D.C. Reagan-National Airport in the morning for as low as $384. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the afternoon when prices are around $486.

Fly from Chicago O'Hare Intl to Washington, D.C. Reagan-National for the best Chicago O'Hare Intl - Washington, D.C. Reagan-National flight prices

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Chicago O'Hare Intl Airport 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 $410 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 Chicago O'Hare Intl Airport for as low as $287 on momondo.

There are 4 cabin classes available to choose from on Chicago O'Hare Intl Airport 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 26% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Washington, D.C. Reagan-National Airport flight.

As of October 2026, prices for Chicago O'Hare Intl Airport to Washington, D.C. Reagan-National Airport flights are approximately 43% more expensive when compared to flights at the same time last year.

Delta, United Airlines, and Frontier are the most popular carriers operating from Chicago O'Hare Intl to Washington, D.C. Reagan-National

United Airlines, American Airlines and JetBlue are the top three most popular airlines that fly to Washington, D.C. Reagan-National Airport from Chicago O'Hare Intl Airport according to our data. United Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Washington, D.C. Reagan-National Airport. Keep in mind that there are 4 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 23% of flights between Chicago and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 138 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.

Tuesday 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, United Airlines have had the least number of delays on this route over the last 12 months; with about 23% of their flights experiencing any sort of delay.

The number of flights available between Chicago O'Hare Intl Airport and Washington, D.C. Reagan-National Airport is 33 per day as of October 2026. The most frequent departure time is 4:00PM, with 39% of daily flights leaving in the afternoon.

As of October 2026, 234 flights take off from Chicago O'Hare Intl Airport and land in Washington, D.C. Reagan-National Airport each week. The most common flight departure day for this route is Wed, with 25% of weekly flights taking off on this day.