How much does it cost to fly round-trip from Chicago to Washington, D.C.?

Airfare is below average for this route at the moment. Chicago to Washington, D.C. flights typically cost between $135 and $315 in October. The cheapest round-trip price found within the last 3 days was $89 on Frontier (Oct 18-Oct 20).

How long is the flight from Chicago to Washington, D.C.?

There are many flights that can get you from Chicago to Washington, D.C. in 1h 50m. Fly via Frontier, Southwest, or United Airlines to get the fastest option. There are 609 mi between Chicago and Washington, D.C.. Most flights are nonstop.

What are the cheapest airlines flying from Chicago to Washington, D.C. round-trip?

Flying on Frontier is currently your cheapest option to Washington, D.C., with prices starting at $85. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $157 and $166, respectively. These flights start at 62% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Chicago to Washington, D.C. one-way?

The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $70. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Chicago to Washington, D.C. for a low price.

How far ahead should I book a flight from Chicago to Washington, D.C.?

The price you pay for your flight from Chicago to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Chicago to Washington, D.C.?

Currently, August is the cheapest month in which you can book a flight from Chicago to Washington, D.C. (average of $292). Flying from Chicago to Washington, D.C. in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Chicago to Washington, D.C.?

Travelers seeking maximum savings on their Chicago to Washington, D.C. flight should consider departing on Thursday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Washington, D.C.

The most flights from CHI to WAS are scheduled on a Monday (87 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (52 on average).

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Chicago to Washington, D.C.?

The most popular flight routes from Chicago to Washington, D.C. are Chicago O'Hare Intl - Washington, D.C. Reagan-National, Chicago O'Hare Intl - Baltimore/Washington and Chicago O'Hare Intl - Washington, D.C. Dulles Intl.

What are the cheapest flights from Chicago to Washington, D.C.?

The cheapest flight price from Chicago to Washington, D.C. is $128. On average you can expect to pay $1,968. The most popular route, (Chicago O'Hare Intl - Washington, D.C. Reagan-National), can usually be booked for $183.

What are the most reliable airlines from Chicago to Washington, D.C.?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to Washington, D.C. on time: Egyptair (100%), ITA Airways (100%), Air China (94%).

What are the most popular airlines that fly from Chicago to Washington, D.C.?

The most popular airlines flying from Chicago to Washington, D.C. are Delta, Frontier and United Airlines. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from CHI to WAS?

When flying from Chicago to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 56% versus a flight at noon.

Most accurate provider : When it comes to deals on Chicago-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Washington, D.C. flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Chicago-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Chicago to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Chicago to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Chicago to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Washington, D.C..

Can I find deals for business class flights from Chicago to Washington, D.C.?

Yes. Cheapflights offers flight deals from Chicago to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$49+ Cheap Flights from Chicago to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$89 (Priceline)
One-way from	$49 (Kiwi.com)
Popular in	January
Cheapest in	August
Average price	$207
Good round-trip deal	$127 or less
Good one-way deal	$77 or less

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy2 stars	Trust Score*1 star
Ovago	Price Accuracy2 stars	Trust Score*2 stars

BA offers complimentary hot meals and beverages in economy, enhancing short-haul comfort.

BA's Executive Club offers free seat selection for mid-tier status, even on economy fares.

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$45	Average$152	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$71	Average$180	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$126	Average$272	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$147	Average$303	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$151	Average$283	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$166	Average$310	FlexibilityNo cancel fee	On-timeN/A

$49+ Cheap flights from Chicago (CHI) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Chicago to Washington, D.C. with Cheapflights

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Cheapflights Tip: The best prices from Chicago to Washington, D.C. are usually found in August or September, booked 41 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Chicago to Washington, D.C.

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Most trusted provider

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Popular in

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Find flight deals from Chicago to Washington, D.C.

Cheapest flights from Chicago to Washington, D.C.Explore the most affordable flight options available from Chicago to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

Explore the most affordable flight options available from Chicago to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chicago to Washington, D.C. that are best for you.

Compare providers for flights from Chicago to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Washington, D.C. in September.

The best insider tips for Chicago to Washington, D.C. flights

Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to Washington, D.C. trip

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Best time to book a flight from Chicago to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Chicago with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Washington, D.C.

How far ahead should I book a flight from Chicago to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Washington, D.C.. Price data was last updated on September 26, 2025.

What is the cheapest month to book a flight from Chicago to Washington, D.C.?

What is the cheapest time of day to fly from CHI to WAS?

Find hourly flight availability from Chicago to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 29, 2025.

What is the cheapest day to fly from Chicago to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Washington, D.C.. Price data was last updated on September 28, 2025.

Weekly flight availability from Chicago to Washington, D.C.

How much does it cost to fly round-trip from Chicago to Washington, D.C.?

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Chicago to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Chicago to Washington, D.C.?

What are the cheapest airlines flying from Chicago to Washington, D.C. round-trip?

What are the cheapest airlines to fly from Chicago to Washington, D.C. one-way?

What are the most popular routes from Chicago to Washington, D.C.?

What are the most reliable airlines from Chicago to Washington, D.C.?

What are the cheapest flights from Chicago to Washington, D.C.?

Can I find deals for flights from Chicago to Washington, D.C. that include hotel bookings?

How can I find direct flights from Chicago to Washington, D.C.?

Can I find deals for business class flights from Chicago to Washington, D.C.?

What is the cheapest month to book a flight from Chicago to Washington, D.C.?

Traveling to a place near Washington, D.C.?

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Alternative routes for Chicago to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Cheapest flights from Chicago to Washington, D.C.
Explore the most affordable flight options available from Chicago to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.