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Cheap flights from Chicago to Washington Dulles Intl (CHI - IAD)

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The best prices from Chicago to Washington Dulles Intl are usually found in September or October, booked 17 days in advance, depart on a Saturday or Thursday and return on a Saturday

How to find the cheapest flight from
Chicago (CHI) to Washington Dulles Intl (IAD)

CHI - IAD
Price
$286 - $337
IAD
Temperature
46.4 - 87.8 °F
IAD
Rainfall
2.5 - 4.4 inches
Popular in July High demand for flights, 6% potential price rise
Cheapest in September Best time to find cheap flights, 9% potential price drop
Round-trip from $286 From Chicago to Washington Dulles Intl
One-way from $79 One-way flight from Chicago to Washington Dulles Intl
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Chicago to Washington Dulles Intl?

Saturday flights are found to be more expensive to fly from Chicago to Washington Dulles Intl. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington Dulles Intl.

How far in advance should I book a flight from Chicago to Washington Dulles Intl?

Users have found that booking a flight from Chicago to Washington Dulles Intl at least 28 days early can save you up to 11% on average compared to booking a flight this week. If booking 28 days before your flight isn’t an option for you, users have found flights from Chicago to Washington Dulles Intl for as little as $252 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $276 for flights departing within the next 3 days.

What is the cheapest month to fly from Chicago to Washington Dulles Intl?

Our data shows that February tends to be the cheapest month to fly to Washington Dulles Intl from Chicago. Users have commonly found prices around $243 for the month, but tickets can be as low as $119. Due to multiple factors, prepare for potentially higher prices in December.

When is the cheapest time to fly from Chicago to Washington Dulles Intl (CHI - IAD)?

It’s typically best to fly out from Chicago to Washington Dulles Intl in the evening. Doing so could potentially save you 5% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Chicago to Washington Dulles Intl in August, September 2020

The best prices found for CHI to IAD flights for August, September
4 Aug - 15 Aug
$160pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
15 Aug - 18 Aug
$161pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
1 Aug - 8 Aug
$166pp
ORD
Chicago O'Hare Intl
Delta
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
ORD
Chicago O'Hare Intl

Chicago to Washington Dulles Intl 2020 flight deals

Cheap flights to Washington Dulles Intl from Chicago found for this year
4 Aug - 15 Aug
$160pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
15 Aug - 18 Aug
$161pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
17 Oct - 29 Oct
$166pp
MDW
Chicago Midway
Delta
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
MDW
Chicago Midway

Non-stop flights to Washington Dulles Intl from Chicago

Save time with Chicago to Washington Dulles Intl direct flight deals
2 Aug - 6 Aug
$167pp
ORD
Chicago O'Hare Intl
Spirit Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Spirit Airlines
Non-Stop
ORD
Chicago O'Hare Intl
24 Jul - 26 Jul
$297pp
ORD
Chicago O'Hare Intl
Allegiant Air
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Allegiant Air
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to Washington Dulles Intl

Late deals on round-trip flights to Washington Dulles Intl from Chicago, departing today and this week
28 Jul - 26 Aug
$230pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
28 Jul - 26 Aug
$236pp
ORD
Chicago O'Hare Intl
Delta
 
1 STOP
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
Delta
 
1 STOP
ORD
Chicago O'Hare Intl
26 Jul - 2 Aug
$240pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
IAD
Washington Dulles Intl
IAD
Washington Dulles Intl
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to Washington Dulles Intl from Chicago

The cheapest one-way flights from Chicago to Washington Dulles Intl
5:13 pm - 7:57 pm
Cape Air
Nonstop
1h 44m
ORD - IAD
Cape Air
$79
Ovago
10:00 am - 12:48 pm
Austrian Airlines
Nonstop
1h 48m
ORD - IAD
Austrian Airlines
$94
Flighttix
9:35 am - 3:55 pm
Delta
1 Stop
5h 20m
ORD - IAD
Delta
$267
Delta

Related info for your journey

Useful info, stats and facts about Chicago to Washington Dulles Intl flights.

Flight FAQs

From Chicago to Washington Dulles Intl

Are flight prices decreasing from Chicago to Washington Dulles Intl due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Chicago and Washington Dulles Intl for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Chicago to Washington Dulles Intl for under $200 on Cheapflights?

Yes, there are multiple flights from Chicago to Washington Dulles Intl for under $200. The cheapest flight booked recently is on Multiple Airlines for just $160, but on average you can expect to pay $198.

Are there nonstop flights from Chicago to Washington Dulles Intl for under $200 on Cheapflights?

Cheapflights has at least 2 direct flights from Chicago to Washington Dulles Intl under $200. A good price for a nonstop flight from Chicago to Washington Dulles Intl is less than $232.

Are there last-minute flights available from Chicago to Washington Dulles Intl for under $300?

There are currently 20+ open flights from Chicago to Washington Dulles Intl within the next 7 days for less than $300.

Is Chicago weather warmer or cooler than Washington Dulles Intl?

Our data indicates that the weather will be 88 °F on average in the month of July. The temperature in Washington Dulles Intl is typically hotter than in Chicago. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

How long is the flight from Chicago to Washington Dulles Intl?

Cape Air, Spirit Airlines, and Sun Country Air can get you from Chicago to Washington Dulles Intl in just under 1h 50m. Your travel time will be generally consistent. Generally, flights for this route are nonstop.

What are the cheapest airlines flying from Chicago to Washington Dulles Intl round-trip?

Delta, at $166, was found to be the cheapest airline from Chicago to Washington Dulles Intl.Alternate airlines to your destination round-trip include Sun Country Air and Spirit Airlines. These flights start at 47% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Chicago to Washington Dulles Intl one-way?

One-way options have recently been found by users for as low as $79 on Cape Air. Other airlines that offer cheap prices include Delta from $83 and Austrian Airlines from $94 one-way.

Destination information for Washington Dulles Intl

Things to know before you go. Useful info for your trip from Chicago to Washington Dulles Intl
Flight duration
2h 02m
Average temperature for August in Washington Dulles Intl
87.8 °F
Avg rainfall for August in Washington Dulles Intl
3.4 ″

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Airports servicing Washington

Hourly flight availability from Chicago to Washington Dulles Intl

Morning 6 AM to noon 80% of CHI to IAD departures
Afternoon Noon to 6 PM 19% of CHI to IAD departures
Early morning Midnight to 6 AM 1% of CHI to IAD departures
Evening 6 PM to midnight 0% of CHI to IAD departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Chicago to Washington Dulles Intl
Sunday
18 daily flights
Monday
18 daily flights
Tuesday
16 daily flights
Wednesday
16 daily flights
Thursday
18 daily flights
Friday
18 daily flights
Saturday
18 daily flights