Cheap flights from Chicago to Washington, D.C. from $53
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Washington, D.C. departing on 8/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from Chicago to Washington, D.C. Dulles Intl Airport
Our best Frontier deals on Chicago to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Chicago to Washington, D.C. Dulles Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Chicago and Washington, D.C. Dulles Intl Airport?
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, August is the cheapest month to fly from Chicago to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $248. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of August, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $274.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $495. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to Washington, D.C. Dulles Intl Airport for around $705.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from Chicago in the morning is the least expensive time of day to depart. momondo users have found prices as low as $436 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $972 on average. Flights to Washington, D.C. Dulles Intl Airport from Chicago at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Chicago to Washington, D.C. Dulles Intl flight route?
Fly from Chicago O'Hare Intl to Washington, D.C. Dulles Intl for the best Chicago - Washington, D.C. Dulles Intl flight prices
How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?
You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $310 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Chicago for as low as $240 on momondo.
What cabin class options are available on Chicago to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on Chicago to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Chicago to Washington, D.C. Dulles Intl?
Frontier, United Airlines, and Southwest are the most popular carriers operating from Chicago to Washington, D.C. Dulles Intl
What airlines fly to Washington, D.C. Dulles Intl Airport?
United Airlines, Frontier and Delta are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Chicago according to our data. United Airlines is the first choice among our users, with 92% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago to Washington, D.C. Dulles Intl Airport on average per day?
As of June 2025, there are 23 flights per day flying from Chicago to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 8:00AM, with 47% of flights taking off in the afternoon.
How many flights depart from Chicago to Washington, D.C. Dulles Intl Airport on average per week?
As of June 2025, 164 flights take off from Chicago and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Sun, with 17% of weekly flights taking off on this day.
When to book flights from Chicago to Washington, D.C. Dulles Intl Airport
Cheap Chicago to Washington, D.C. Dulles Intl Airport (CHI to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Washington, D.C. Dulles Intl Airport
How far is Chicago to Washington, D.C. Dulles Intl by plane?
The straight-line distance from Chicago to Washington, D.C. Dulles Intl is 571.5 mi. Flights usually cover this in 5h 02m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Chicago to Washington, D.C. Dulles Intl Airport?
Prices for flights from Chicago to Washington, D.C. Dulles Intl Airport refresh daily.
How many operators does momondo search for flights from Chicago to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Chicago to Washington, D.C. Dulles Intl Airport is 3 as of June 2025.
How old do you have to be to fly from Chicago to Washington, D.C. Dulles Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Chicago and Washington, D.C. Dulles Intl Airport, the leading plane model is Boeing 737-900, making up 11.19% of the total bookings. Other popular models include Boeing 757-200 with 10.71%, Boeing 787 Dreamliner with 9.86%, and Boeing 787-8 Dreamliner with 9.19%.
What is the most popular airline from Chicago to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Chicago and Washington, D.C. Dulles Intl Airport, the leading airline is United Airlines, making up 96% of the total bookings. Other popular airlines include Frontier with 4%.
Best airlines flying from Chicago to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Chicago to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $54 | Free Cancellation | Rating 5.9 3,293 reviews | |||
| PriceFrom $176 | Free Cancellation | Rating 8.0 7,969 reviews | |||
| PriceFrom $179 | Free Cancellation | Rating 7.4 8,852 reviews |
United Airlines Flights From Chicago to Washington, D.C. Dulles Intl Airport
United Airlines operates around 29 flights from Chicago to Washington, D.C. Dulles Intl Airport every week. The average price of these flights found in the last 72 hours has been $303, but momondo users have found United Airlines deals from Chicago to Washington, D.C. Dulles Intl Airport from as low as $179 round-trip. United Airlines has been scored 7.4/10 in 8,852 reviews.
Traveling to a place near Washington, D.C.?
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Why should I use momondo to find a flight deal from Chicago to Washington, D.C.?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Chicago.
Can I find flights from Chicago to Washington, D.C. with flexible booking policies on momondo?
Flights from Chicago to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Chicago to Washington, D.C.?
momondo helps you find the best flight between Chicago and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Chicago to Washington, D.C. right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Washington, D.C. from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.