Cheap flights from Chicago O'Hare Intl Airport to District of Columbia from $70

In general, September is the cheapest month to fly from Chicago O'Hare Intl Airport to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $178. If you don’t want to visit District of Columbia in September, then you should wait until August to fly from Chicago O'Hare Intl Airport, when ticket prices are also cheap, with an average price of $212.

The cheapest day to depart on your flight to District of Columbia is on a Friday when prices can be found for as low as $354. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Chicago O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $548.

Flying to District of Columbia from Chicago O'Hare Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $341 when looking at flights departing in the morning. Flights to District of Columbia are more costly at noon, with an average ticket price of $791. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Chicago O'Hare Intl to Baltimore/Washington for the best Chicago O'Hare Intl - District of Columbia flight prices

You are more likely to see cheaper flights to District of Columbia from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $320 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Chicago O'Hare Intl Airport for as low as $258 on momondo.

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, United Airlines, and American Airlines are the most popular carriers operating from Chicago O'Hare Intl to District of Columbia

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to District of Columbia from Chicago O'Hare Intl Airport according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 7 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

As of February 2026, there are 50 flights per day flying from Chicago O'Hare Intl Airport to District of Columbia. The most common time of day flights depart is 6:00PM, with 38% of flights taking off at noon.

As of February 2026, 355 flights take off from Chicago O'Hare Intl Airport and land in District of Columbia each week. The most common flight departure day for this route is Thu, with 21% of weekly flights taking off on this day.