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Dulles Intl

$70+ Cheap flights from Chicago (CHI) to Dulles Intl (IAD)

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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — IAD
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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The best prices from Chicago to Washington, D.C. Dulles Intl are usually found in August or January, booked 65 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Chicago to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 21, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

February

Cheapest in

August

Round-trip from

$136
(Mytrip)

One-way from

$70
(Frontier)
Provider with most accurate pricing for Chicago (CHI)-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Washington, D.C. Dulles Intl flights.
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High demand for flights, 16% potential price rise
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Best time to find cheap flights, 16% potential price drop
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From Chicago (CHI) to Washington, D.C. Dulles Intl
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One-way flight from Chicago (CHI) to Washington, D.C. Dulles Intl
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Find flight deals from Chicago to Dulles Intl

Cheapest flights from Chicago to Dulles Intl
Explore the most affordable flight options available from Chicago to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

This Travelocity deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/172:20 pmMDW - IAD
1 stop6h 00mFrontier
mié. 12/183:25 pmIAD - MDW
1 stop6h 52mFrontier
Deal found 11/21$138
This Frontier deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/1310:59 amORD - IAD
1 stop6h 20mFrontier
mié. 12/183:25 pmIAD - ORD
1 stop7h 20mFrontier
Deal found 11/20$138
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/188:48 amORD - IAD
Nonstop1h 56mUnited Airlines
mar. 1/710:09 pmIAD - ORD
Nonstop2h 06mUnited Airlines
Deal found 11/19$197
This Delta deal was found by Cheapflights users on 11/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/115:50 pmMDW - IAD
1 stop4h 35mDelta
mié. 12/186:00 amIAD - MDW
1 stop3h 58mDelta
Deal found 11/21$216
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/175:40 amORD - IAD
1 stop5h 10mDelta
mar. 1/73:05 pmIAD - ORD
1 stop7h 53mDelta
Deal found 11/19$216
This American Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/111:54 pmORD - IAD
1 stop4h 34mAmerican Airlines
mié. 12/185:00 amIAD - ORD
1 stop4h 49mAmerican Airlines
Deal found 11/19$256
This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/96:42 pmORD - IAD
3 stops20h 28mMultiple Airlines
sáb. 12/148:25 amIAD - ORD
3 stops26h 12mMultiple Airlines
Deal found 11/20$366
This Sun Country Air deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/257:10 pmORD - IAD
1 stop15h 29mSun Country Air
mié. 11/2712:47 pmIAD - ORD
1 stop20h 34mSun Country Air
Deal found 11/20$458
This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/1211:25 amMDW - IAD
1 stop9h 59mPorter Airlines
dom. 12/157:00 amIAD - MDW
1 stop10h 40mPorter Airlines
Deal found 11/20$529
This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/811:15 amMDW - IAD
1 stop10h 09mMultiple Airlines
lun. 12/97:00 amIAD - MDW
1 stop10h 40mMultiple Airlines
Deal found 11/20$709
This Mytrip deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/49:30 amMDW - IAD
3 stops25h 04mWestJet
dom. 12/85:35 pmIAD - MDW
3 stops25h 57mWestJet
Deal found 11/20$1,334

Find flights from Chicago to Dulles Intl within your budget

Customize your flight search to find flights from Chicago to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

dom. 1/5

5:52 pm-2:34 pm

1 stop19h 42m

Washington, D.C. Dulles Intl

dom. 1/12

5:57 pm-10:21 am

1 stop17h 24m

$136

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

dom. 1/5

7:29 pm-7:11 am

1 stop10h 42m

Washington, D.C. Dulles Intl

dom. 1/12

5:57 pm-4:38 pm

1 stop23h 41m

$136

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

mié. 12/18

8:48 am-11:44 am

Nonstop1h 56m

Washington, D.C. Dulles Intl

mar. 1/7

10:09 pm-11:15 pm

Nonstop2h 06m

$197

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

mié. 12/11

5:50 pm-11:25 pm

1 stop4h 35m

Washington, D.C. Dulles Intl

mié. 12/18

6:00 am-8:58 am

1 stop3h 58m

$216

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

mar. 12/17

5:40 am-11:50 am

1 stop5h 10m

Washington, D.C. Dulles Intl

mar. 1/7

3:05 pm-9:58 pm

1 stop7h 53m

$216

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

mié. 12/11

1:54 pm-7:28 pm

1 stop4h 34m

Washington, D.C. Dulles Intl

mié. 12/18

5:00 am-8:49 am

1 stop4h 49m

$256

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

lun. 12/9

6:42 pm-4:10 pm

3 stops20h 28m

Washington, D.C. Dulles Intl

sáb. 12/14

8:25 am-9:37 am

3 stops26h 12m

$366

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

jue. 12/12

11:25 am-10:24 pm

1 stop9h 59m

Washington, D.C. Dulles Intl

dom. 12/15

7:00 am-4:40 pm

1 stop10h 40m

$529

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

dom. 12/8

11:15 am-10:24 pm

1 stop10h 09m

Washington, D.C. Dulles Intl

lun. 12/9

7:00 am-4:40 pm

1 stop10h 40m

$709

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

mié. 12/4

9:30 am-11:34 am

3 stops25h 04m

Washington, D.C. Dulles Intl

dom. 12/8

5:35 pm-6:32 pm

3 stops25h 57m

$1,334

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 23 results
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Compare providers for flights from Chicago to Dulles Intl

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 Dulles Intl in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Chicago to Dulles Intl

Get recent, data-driven insights about flights from Chicago to Dulles Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Dulles Intl. Price data was last updated on November 15, 2024.

The best time to book flights from Chicago to Washington, D.C. Dulles Intl Airport is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, September is the cheapest month in which you can book a flight from Chicago to Washington, D.C. Dulles Intl Airport (average of $300). Flying from Chicago to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $376). 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 time of day to fly from CHI to IAD?

Find hourly flight availability from Chicago to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 21, 2024.

A simple way to save on the total cost of your ticket is to fly from Chicago to Washington, D.C. Dulles Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 10% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Chicago to Dulles Intl. Price data was last updated on March 10, 2024.

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

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated noviembre 21, 2024.
Read reviews from past customers who have flown Porter Airlines, Frontier and United Airlines from Chicago to Washington, D.C.. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,758 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,758 reviews
Delta
8.0
Very good
8,758 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines
7.8
Good
286 reviews
Delta
8.0
Very good
8,758 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat
7.8
Good
389 reviews
Delta
8.0
Very good
8,758 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
9,172 reviews
Delta
8.0
Very good
8,758 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet
7.3
Good
2,810 reviews
Delta
8.0
Very good
8,758 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

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

    Flying on Frontier is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $136. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $197 and $216, respectively. Frontier is 57% cheaper than the average price of flights available within the next 90 days to this destination.

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

    $70 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Allegiant Air, with prices starting from $99 and $107, respectively.

  • What are the most reliable airlines from Chicago to Washington, D.C. Dulles Intl Airport?

    The top 3 most reliable airlines when flying from Chicago to Washington, D.C. Dulles Intl Airport are Emirates (100%), Air China (100%) and Avianca (97%).

  • What are the cheapest flights from Chicago to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for $114. While the most popular route (Chicago O'Hare Intl - Washington, D.C. Dulles Intl) can be booked for $178 on average our data indicates $802 when flying from Chicago to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Chicago to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Chicago to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Dulles Intl?

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

  • Can I find deals for business class flights from Chicago to Dulles Intl?

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

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

    Currently, September is the cheapest month in which you can book a flight from Chicago to Washington, D.C. Dulles Intl Airport (average of $300). Flying from Chicago to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $376). 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.

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Alternative routes for Chicago to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Chicago to Dulles Intl

Discover the top 4 airlines that operate flights from Chicago to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$164FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$121Average$332FlexibilityNo cancel feeOn-time71%
DeltaCheapest$175Average$357FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$305FlexibilityNo cancel feeOn-time69%
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