Cheap flights from Chicago O'Hare Intl Airport to Washington, D.C. from $79
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 O'Hare Intl Airport to Washington, D.C. departing on 8/12. 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 O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport
Our best Frontier deals on Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport
Our best United Airlines deals on Chicago O'Hare Intl Airport 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 O'Hare Intl Airport 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 cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, August is the cheapest month to fly from Chicago O'Hare Intl Airport 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 $286. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $293.
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 $475. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $423 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 $970 on average. Flights to Washington, D.C. Dulles Intl Airport from Chicago O'Hare Intl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Chicago O'Hare Intl to Washington, D.C. Dulles Intl flight route?
Fly from Chicago O'Hare Intl to Washington, D.C. Dulles Intl for the best Chicago O'Hare Intl - 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 O'Hare Intl Airport when booking 4 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 4 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 O'Hare Intl Airport for as low as $237 on momondo.
What cabin class options are available on Chicago O'Hare Intl to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on Chicago O'Hare Intl 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.
Can stopping save me money on Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flights?
No. A direct flight is the cheapest option for a flight between Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport.
How have Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flight prices changed over time?
As of June 2025, prices for Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flights are approximately 7% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Chicago O'Hare Intl to Washington, D.C. Dulles Intl?
United Airlines, Frontier, and Delta are the most popular carriers operating from Chicago O'Hare Intl 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 O'Hare Intl Airport according to our data. United Airlines is the first choice among our users, with 95% 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 O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport on average per day?
As of June 2025, 28 flights take off from Chicago O'Hare Intl Airport and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 8:00AM, with 45% of daily flights taking off in the afternoon.
How many flights depart from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport on average per week?
As of June 2025, there are 202 flights per week flying from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.
When to book flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport
Cheap Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport (ORD to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport
How far is Chicago O'Hare Intl to Washington, D.C. Dulles Intl by plane?
Chicago O'Hare Intl and Washington, D.C. Dulles Intl are 587.2 mi apart from one another. In terms of flight time, this usually takes a little over 1h 58m.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport is 3 as of June 2025.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and Washington, D.C. Dulles Intl Airport, the leading plane model is Boeing 737-900, making up 11.79% of the total bookings. Other popular models include Boeing 757-200 with 10.44%, Boeing 787 Dreamliner with 8.86%, and Boeing 787-8 Dreamliner with 8.30%.
What is the most popular airline from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and Washington, D.C. Dulles Intl Airport, the leading airline is United Airlines, making up 95% of the total bookings. Other popular airlines include Frontier with 3% and Delta with 2%.
Best airlines flying from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $54 | Free Cancellation | Rating 5.9 3,296 reviews | |||
| PriceFrom $176 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $179 | Free Cancellation | Rating 7.4 8,801 reviews |
United Airlines Flights From Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport
United Airlines flight deals from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport start from $179 round-trip. Over the 48 United Airlines flights for this route in a normal week, average airfare is usually $300 round-trip - but some users have found much cheaper deals with momondo.
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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?
Yes. All flights to Washington, D.C. from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to Washington, D.C.?
Once you have performed a search for Chicago to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Chicago to Washington, D.C. right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Chicago to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.