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

To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $89. Frontier flights start at $90 while deals on Allegiant Air start at $95 one-way.

What are the most popular routes from Illinois to Washington, D.C. Dulles Intl Airport?

The most popular flight routes from Illinois to Washington, D.C. Dulles Intl Airport are Chicago O'Hare Intl - Washington, D.C. Dulles Intl, Chicago Midway - Washington, D.C. Dulles Intl and Lambert-St Louis - Washington, D.C. Dulles Intl.

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

The cheapest flight price from Illinois to Washington, D.C. Dulles Intl Airport is $114. On average you can expect to pay $843. The most popular route, (Chicago O'Hare Intl - Washington, D.C. Dulles Intl), can usually be booked for $141.

What are the most popular airlines that fly from Illinois to Washington, D.C. Dulles Intl Airport?

Before booking your flight from Illinois to Washington, D.C. Dulles Intl Airport check out the most popular airlines for this route: American Airlines, Delta or Frontier.

How far in advance should I book a flight from Illinois to Washington, D.C. Dulles Intl Airport?

Users have found that booking a flight from Illinois to Washington, D.C. Dulles Intl Airport at least 58 days early can save you up to 212% on average compared to booking a flight this week. If booking 58 days before your flight isn’t an option for you, users have found flights from Illinois to Washington, D.C. Dulles Intl Airport for as little as $243 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 $392 for flights departing within the next 3 days.

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

Our data shows that August tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Illinois. Users have commonly found prices around $237 for the month, but tickets can be as low as $68. Due to multiple factors, prepare for potentially higher prices in March.

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

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

How can I find direct flights from Illinois to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Illinois 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.

$89+ Save on Flights from Illinois to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Illinois to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$175 (Frontier)
One-way from	$89 (United Airlines)
Popular in	March
Cheapest in	August
Average price	$267
Good round-trip deal	$429 or less
Good one-way deal	$149 or less

Provider with most accurate pricing for Chicago (CHI)-Washington, D.C. (WAS) flight deals.

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Provider most trusted by Cheapflights users for Chicago (CHI)-Washington, D.C. (WAS) flights.

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From Illinois to Washington, D.C. Dulles Intl

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One-way flight from Illinois to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($20 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in February 2025

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Price to beat on a round-trip flight from Illinois to Washington, D.C. Dulles Intl.

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Price to beat on a one-way flight from Illinois to Washington, D.C. Dulles Intl.

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Find flight deals from Illinois to Dulles Intl

Cheapest flights from Illinois to Dulles Intl
Explore the most affordable flight options available from Illinois to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Tue 4/1511:00 amMDW - IAD

1 stop7h 44mFrontier

Mon 4/2112:58 pmIAD - MDW

1 stop7h 48mFrontier

Deal found 2/19

$175

Fri 4/49:54 amORD - IAD

1 stop6h 11mFrontier

Sun 4/611:45 amIAD - ORD

1 stop21h 05mFrontier

Deal found 2/19

$177

Mon 3/249:07 pmORD - IAD

Nonstop1h 52mUnited Airlines

Wed 3/268:20 amIAD - ORD

Nonstop2h 18mUnited Airlines

Deal found 2/20

$178

Tue 3/255:30 pmORD - IAD

1 stop6h 01mDelta

Wed 3/267:35 amIAD - ORD

1 stop7h 10mDelta

Deal found 2/20

$194

Thu 3/66:00 amMDW - IAD

1 stop4h 57mDelta

Mon 3/106:00 amIAD - MDW

1 stop3h 45mDelta

Deal found 2/20

$197

Mon 3/1010:36 amSTL - IAD

1 stop5h 37mFrontier

Fri 3/144:10 pmIAD - STL

1 stop8h 39mFrontier

Deal found 2/19

$210

Sat 3/84:40 pmSTL - IAD

1 stop6h 42mDelta

Mon 3/107:35 amIAD - STL

1 stop5h 25mDelta

Deal found 2/20

$217

Mon 3/248:25 amSTL - IAD

Nonstop2h 14mUnited Airlines

Thu 3/278:35 amIAD - STL

Nonstop2h 33mUnited Airlines

Deal found 2/19

$229

Thu 3/610:38 amMLI - IAD

1 stop8h 42mAllegiant Air

Mon 3/1010:07 amIAD - MLI

1 stop9h 06mAllegiant Air

Deal found 2/19

$250

Fri 3/75:20 pmMLI - IAD

1 stop5h 39mUnited Airlines

Mon 3/175:10 pmIAD - MLI

1 stop5h 20mUnited Airlines

Deal found 2/18

$254

Wed 4/26:32 pmSTL - IAD

1 stop4h 26mAmerican Airlines

Mon 4/75:00 amIAD - STL

1 stop4h 30mAmerican Airlines

Deal found 2/19

$257

Thu 2/276:45 amPIA - IAD

1 stop3h 56mUnited Airlines

Wed 3/1212:55 pmIAD - PIA

1 stop4h 47mUnited Airlines

Deal found 2/19

$259

Best flights from Illinois to Dulles Intl
Discover carefully curated flight deals from Illinois to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Tue 4/1511:00 amMDW - IAD

1 stop7h 44mFrontier

Mon 4/2112:58 pmIAD - MDW

1 stop7h 48mFrontier

Deal found 2/19

$175

Mon 3/249:07 pmORD - IAD

Nonstop1h 52mUnited Airlines

Tue 3/2510:20 pmIAD - ORD

Nonstop2h 09mUnited Airlines

Deal found 2/20

$178

Tue 3/255:30 pmORD - IAD

1 stop6h 01mDelta

Wed 3/267:35 amIAD - ORD

1 stop7h 10mDelta

Deal found 2/20

$194

Thu 3/610:38 amMLI - IAD

1 stop8h 42mAllegiant Air

Mon 3/1010:07 amIAD - MLI

1 stop9h 06mAllegiant Air

Deal found 2/19

$250

Wed 4/26:32 pmSTL - IAD

1 stop4h 26mAmerican Airlines

Mon 4/75:00 amIAD - STL

1 stop4h 30mAmerican Airlines

Deal found 2/19

$257

Wed 3/125:22 pmORD - IAD

3 stops17h 04mMultiple Airlines

Fri 3/145:40 pmIAD - ORD

3 stops31h 16mMultiple Airlines

Deal found 2/20

$280

Fri 4/49:54 amORD - IAD

1 stop6h 11mFrontier

Sun 4/611:45 amIAD - ORD

1 stop21h 05mFrontier

Deal found 2/19

$177

Thu 3/66:28 pmMDW - IAD

1 stop3h 45mDelta

Tue 3/111:35 pmIAD - MDW

1 stop5h 27mDelta

Deal found 2/20

$197

Mon 3/248:25 amSTL - IAD

Nonstop2h 14mUnited Airlines

Thu 3/278:35 amIAD - STL

Nonstop2h 33mUnited Airlines

Deal found 2/19

$229

Mon 3/1010:36 amSTL - IAD

1 stop5h 37mFrontier

Fri 3/144:10 pmIAD - STL

1 stop8h 39mFrontier

Deal found 2/19

$210

Sat 3/84:40 pmSTL - IAD

1 stop6h 42mDelta

Mon 3/107:35 amIAD - STL

1 stop5h 25mDelta

Deal found 2/20

$217

Fri 3/74:22 pmMLI - IAD

1 stop6h 36mAmerican Airlines

Tue 3/115:28 pmIAD - MLI

1 stop5h 25mAmerican Airlines

Deal found 2/20

$259

Last-minute flights from Illinois to Dulles Intl
Discover last-minute flight deals from Illinois to Dulles Intl. Data last updated February 20, 2025 and is based on user searches.

Tue 2/255:20 pmSTL - IAD

1 stop22h 53mFrontier

Wed 3/56:03 pmIAD - STL

1 stop6h 40mFrontier

Deal found 2/19

$220

Tue 2/258:47 amMDW - IAD

1 stop9h 34mFrontier

Wed 2/266:03 pmIAD - MDW

1 stop26h 26mFrontier

Deal found 2/20

$255

Thu 2/278:04 amORD - IAD

1 stop7h 59mFrontier

Sat 3/13:04 pmIAD - ORD

1 stop8h 21mFrontier

Deal found 2/20

$181

Thu 2/274:10 pmORD - IAD

Nonstop1h 51mUnited Airlines

Thu 2/2710:05 pmIAD - ORD

1 stop10h 52mUnited Airlines

Deal found 2/19

$247

Thu 2/276:45 amPIA - IAD

1 stop3h 56mUnited Airlines

Wed 3/1212:55 pmIAD - PIA

1 stop4h 47mUnited Airlines

Deal found 2/19

$259

Thu 2/2711:19 amPIA - IAD

1 stop5h 42mAmerican Airlines

Wed 3/126:27 amIAD - PIA

2 stops9h 34mAmerican Airlines

Deal found 2/19

$264

Thu 2/2712:44 pmMDW - IAD

1 stop7h 21mDelta

Thu 3/66:00 amIAD - MDW

1 stop5h 12mDelta

Deal found 2/20

$408

Fri 2/288:25 amSTL - IAD

Nonstop2h 09mUnited Airlines

Mon 3/35:47 pmIAD - STL

1 stop6h 45mUnited Airlines

Deal found 2/20

$295

Sat 3/14:23 pmMLI - IAD

1 stop6h 30mAmerican Airlines

Thu 3/66:18 amIAD - MLI

1 stop9h 37mAmerican Airlines

Deal found 2/20

$289

Sat 3/15:45 pmORD - IAD

2 stops23h 50mMultiple Airlines

Sun 3/29:45 pmIAD - ORD

3 stops27h 13mMultiple Airlines

Deal found 2/19

$346

Sat 3/16:00 amBMI - IAD

1 stop5h 45mDelta

Tue 3/46:15 pmIAD - BMI

1 stop5h 04mDelta

Deal found 2/20

$399

Sat 3/13:34 pmMLI - IAD

2 stops14h 53mUnited Airlines

Thu 3/66:10 amIAD - MLI

1 stop5h 09mUnited Airlines

Deal found 2/19

$437

One-way flights from Illinois to Dulles Intl
Search for one-way flight options from Illinois to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated February 20, 2025.

Wed 3/266:18 pmORD - IAD

Nonstop1h 55mUnited Airlines

Deal found 2/20

$89

Wed 5/289:12 pmMDW - IAD

1 stop18h 11mFrontier

Deal found 2/20

$90

Sun 3/98:10 amORD - IAD

1 stop12h 15mFrontier

Deal found 2/20

$91

Sun 4/66:10 pmMDW - IAD

1 stop14h 07mAllegiant Air

Deal found 2/20

$95

Thu 3/136:42 pmMDW - IAD

1 stop3h 18mDelta

Deal found 2/20

$97

Thu 3/136:45 amORD - IAD

1 stop3h 48mDelta

Deal found 2/20

$97

Mon 3/35:20 pmSTL - IAD

1 stop22h 35mFrontier

Deal found 2/19

$97

Wed 3/55:50 pmSTL - IAD

1 stop4h 23mDelta

Deal found 2/19

$99

Wed 4/25:05 amMLI - IAD

1 stop7h 17mAmerican Airlines

Deal found 2/20

$100

Tue 4/18:25 amSTL - IAD

Nonstop2h 09mUnited Airlines

Deal found 2/20

$109

Tue 4/15:22 pmORD - IAD

3 stops16h 58mMultiple Airlines

Deal found 2/20

$114

Tue 4/229:18 amSTL - IAD

1 stop6h 04mAmerican Airlines

Deal found 2/20

$129

Find flights from Illinois to Dulles Intl within your budget

Fly from

Fly to

Route

Depart

Return

Price

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Tue 4/15

11:00 am-7:44 pm

1 stop7h 44m

Washington, D.C. Dulles Intl

Mon 4/21

12:58 pm-7:46 pm

1 stop7h 48m

$175

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 4/4

9:54 am-5:05 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Sun 4/6

11:45 am-7:50 am

1 stop21h 05m

$177

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Mon 3/24

9:07 pm-11:59 pm

Nonstop1h 52m

Washington, D.C. Dulles Intl

Wed 3/26

8:20 am-9:38 am

Nonstop2h 18m

$178

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Tue 3/25

5:30 pm-12:31 am

1 stop6h 01m

Washington, D.C. Dulles Intl

Wed 3/26

7:35 am-1:45 pm

1 stop7h 10m

$194

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Thu 3/6

6:28 pm-11:13 pm

1 stop3h 45m

Washington, D.C. Dulles Intl

Thu 3/13

6:00 am-8:45 am

1 stop3h 45m

$197

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Mon 3/10

10:36 am-5:13 pm

1 stop5h 37m

Washington, D.C. Dulles Intl

Fri 3/14

4:10 pm-11:49 pm

1 stop8h 39m

$210

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 3/8

4:40 pm-12:22 am

1 stop6h 42m

Washington, D.C. Dulles Intl

Mon 3/10

7:35 am-12:00 pm

1 stop5h 25m

$217

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Mon 3/24

8:25 am-11:39 am

Nonstop2h 14m

Washington, D.C. Dulles Intl

Thu 3/27

8:35 am-10:08 am

Nonstop2h 33m

$229

MolineWashington, D.C.

MLI - IAD

MLIIAD

Moline Quad-City

Thu 3/6

10:38 am-8:20 pm

1 stop8h 42m

Washington, D.C. Dulles Intl

Mon 3/10

10:07 am-6:13 pm

1 stop9h 06m

$250

MolineWashington, D.C.

MLI - IAD

MLIIAD

Moline Quad-City

Fri 3/7

5:20 pm-11:59 pm

1 stop5h 39m

Washington, D.C. Dulles Intl

Mon 3/17

5:10 pm-9:30 pm

1 stop5h 20m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 46 results

...

Best time to book a flight from Illinois to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Illinois 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 Illinois to Dulles Intl

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

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Illinois to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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 IL to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Washington, D.C. Dulles Intl Airport as you normally would.

Weekly flight availability from Illinois to Washington, D.C. Dulles Intl Airport

The most flights from USIL to IAD are scheduled on a Thursday (20 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Dulles Intl 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

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

See what other customers who have flown with Delta, United Airlines and Allegiant Air from Illinois to Washington, D.C. have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta

8.0

Very good

8,220 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

United Airlines

7.4

Good

8,766 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Allegiant Air

7.3

Good

765 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Sun Country Air

7.0

Good

374 reviews

Delta

8.0

Very good

8,220 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

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

Related info for your journey

What are the cheapest airlines to fly from Illinois to Washington, D.C. Dulles Intl Airport one-way?
To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $89. Frontier flights start at $90 while deals on Allegiant Air start at $95 one-way.
What are the most popular routes from Illinois to Washington, D.C. Dulles Intl Airport?
The most popular flight routes from Illinois to Washington, D.C. Dulles Intl Airport are Chicago O'Hare Intl - Washington, D.C. Dulles Intl, Chicago Midway - Washington, D.C. Dulles Intl and Lambert-St Louis - Washington, D.C. Dulles Intl.
What are the most reliable airlines from Illinois to Washington, D.C. Dulles Intl Airport?
The top 3 most reliable airlines when flying from Illinois to Washington, D.C. Dulles Intl Airport are Air China (94%), Avianca (92%) and Austrian Airlines (89%).
What are the cheapest flights from Illinois to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from Illinois to Washington, D.C. Dulles Intl Airport is $114. On average you can expect to pay $843. The most popular route, (Chicago O'Hare Intl - Washington, D.C. Dulles Intl), can usually be booked for $141.
Can I find deals for flights from Illinois to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Illinois to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Dulles Intl.
Can I find deals for business class flights from Illinois to Dulles Intl?
Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Illinois to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Illinois to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $389). 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.

See more FAQs

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Springfield

Rockville

Tysons

Gaithersburg

Silver Spring

Fredericksburg

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Laurel

Falls Church

Woodbridge

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Herndon

Bowie

Reston

National Harbor

Oxon Hill

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Illinois to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$54	Average$164	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$109	Average$318	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$176	Average$363	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$177	Average$381	FlexibilityNo cancel fee	On-time69%

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$89+ Cheap flights from Illinois 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 3/26. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Illinois to Dulles Intl

Keep the following information in mind while searching for Illinois to Dulles Intl flight deals. Data was last updated February 20, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Dulles Intl

Cheapest flights from Illinois to Dulles IntlExplore the most affordable flight options available from Illinois to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Explore the most affordable flight options available from Illinois to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

Find flights from Illinois to Dulles Intl within your budget

Best time to book a flight from Illinois to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Illinois with our price prediction graph.

Travel insights for flights from Illinois to Dulles Intl

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

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

What is the cheapest time of day to fly from IL to IAD?

Find hourly flight availability from Illinois 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 February 20, 2025.

Weekly flight availability from Illinois to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

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

Temperature in Dulles Intl by month

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

Reviews of airlines servicing Dulles Intl

See what other customers who have flown with Delta, United Airlines and Allegiant Air from Illinois to Washington, D.C. have to say. Users have also rated airlines 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 Illinois 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 to fly from Illinois to Washington, D.C. Dulles Intl Airport one-way?

What are the most popular routes from Illinois to Washington, D.C. Dulles Intl Airport?

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

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

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

How can I find direct flights from Illinois to Dulles Intl?

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

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

Traveling to a place near Illinois?

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Alternative routes for Illinois to Dulles Intl

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Top 4 airlines flying from Illinois to Dulles Intl

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Cheapest flights from Illinois to Dulles Intl
Explore the most affordable flight options available from Illinois to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.