$120 Find Cheap Flights from Chicago to Washington Dulles Airport - Compare and Save

These are the earliest and latest flight times available from Chicago to Washington, D.C. Dulles Intl Airport:

• Earliest: departs at 5:55 am and lands at 7:57 am
• Latest: departs at 11:55 pm and lands at 1:57 am.

The flight takes about 2h 02m.

Two cabin classes are available on flights from Chicago to Washington, D.C. Dulles Intl Airport:

• Economy Class
• First Class

A nonstop flight from Chicago to Washington, D.C. Dulles Intl Airport takes 2h 02m, covering 572 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Chicago to Washington, D.C. Dulles Intl Airport range from $284 to $512, with an average of $358 over the past 12 months. Anything below $284 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 72% above the $358 route average. Book 18 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $200 round-trip via Tampa (TPA), compared to $368 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

Morning is the busiest departure period on Chicago to Washington, D.C. Dulles Intl Airport flights, with 34% of flights leaving in that window. Afternoon departures account for 34%, evening flights for 16%, and night flights for 16%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $210 to $1,343. That means the highest observed fare was about 6x higher than the lowest one.

One-way fares from Chicago to Washington, D.C. Dulles Intl Airport are currently lower than usual. Average one-way flight prices are about $135, which is 46% below the typical average for this route.

Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates averaging $70 for economy cars. Top options include:

• Hertz
• Dollar
• Budget
• Sixt
• Thrifty

Flights from Chicago to Washington, D.C. Dulles Intl Airport may depart from several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Flights usually arrive at Washington, D.C. Dulles Intl (IAD).

Morning flights have the fewest delays on this route, while evening departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Chicago to Washington, D.C. Dulles Intl Airport route, 17% of flights were delayed in the past 3 months, with delays averaging 1h 51m.

One-stop flights from Chicago to Washington, D.C. Dulles Intl Airport most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 82% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 13% of one-stop connections
• Charlotte Douglas (CLT) - 4% of one-stop connections
• Tampa (TPA) - 1% of one-stop connections

Yes. Flexible dates can save you up to 38% on flights from Chicago to Washington, D.C. Dulles Intl Airport. Wednesday is the cheapest departure day at $312 round-trip on average, while Monday is the most expensive at $497, a difference of $185.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only United Airlines operates flights between Chicago and Washington, D.C. Dulles Intl Airport.

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 27m, compared with 5h 25m via Charlotte Douglas (CLT) and 7h 33m via Atlanta Hartsfield-Jackson (ATL).

Washington, D.C. Dulles Intl Airport is 1 hour ahead of Chicago (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Washington, D.C. Dulles Intl Airport are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. Dulles Intl Airport on KAYAK.

Among airlines operating Chicago to Washington, D.C. Dulles Intl Airport flights:

• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.