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 Frontier, which is currently one of the cheapest options available, starting at $88. United Airlines flights start at $89 while deals on Delta start at $94 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 $96. On average you can expect to pay $1,723. The most popular route, (Chicago O'Hare Intl - Washington, D.C. Dulles Intl), can usually be booked for $177.

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 55% 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 $226 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 $419 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 $233 for the month, but tickets can be as low as $67. 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.

$88+ 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	$177 (United Airlines)
One-way from	$88 (Cheapflightsfares)
Popular in	March
Cheapest in	August
Average price	$273
Good round-trip deal	$341 or less
Good one-way deal	$143 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

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Highest demand for flights based on searches. 4% potential increase in price ($10 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).

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Average for round-trip flights in March 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 March 28, 2025.

Thu 4/178:45 amORD - IAD

Nonstop1h 59mUnited Airlines

Thu 4/1710:20 pmIAD - ORD

Nonstop2h 09mUnited Airlines

Deal found 3/27

$177

Fri 4/119:54 amORD - IAD

1 stop6h 11mFrontier

Tue 4/158:34 pmIAD - ORD

1 stop12h 11mFrontier

Deal found 3/27

$178

Sun 4/135:15 amMDW - IAD

1 stop14h 29mFrontier

Wed 4/164:29 pmIAD - MDW

1 stop6h 04mFrontier

Deal found 3/27

$180

Thu 5/16:04 amMDW - IAD

1 stop4h 19mDelta

Tue 5/69:20 amIAD - MDW

1 stop4h 15mDelta

Deal found 3/27

$182

Wed 4/305:30 amORD - IAD

1 stop4h 53mDelta

Mon 5/55:32 pmIAD - ORD

1 stop7h 27mDelta

Deal found 3/27

$182

Wed 4/235:35 pmSTL - IAD

1 stop5h 24mUnited Airlines

Sat 4/268:35 amIAD - STL

Nonstop2h 23mUnited Airlines

Deal found 3/27

$207

Sat 4/266:50 amSTL - IAD

1 stop3h 41mDelta

Mon 4/287:46 pmIAD - STL

1 stop4h 50mDelta

Deal found 3/26

$217

Sat 6/72:27 pmSTL - IAD

1 stop14h 31mFrontier

Sat 6/146:10 amIAD - STL

1 stop8h 47mFrontier

Deal found 3/26

$240

Thu 5/86:00 amORD - IAD

1 stop7h 23mMultiple Airlines

Sun 5/1110:07 pmIAD - ORD

Nonstop2h 08mMultiple Airlines

Deal found 3/27

$265

Fri 8/88:10 pmORD - IAD

1 stop14h 33mSun Country Air

Sun 8/1012:40 pmIAD - ORD

1 stop7h 31mSun Country Air

Deal found 3/27

$275

Tue 5/135:00 pmBMI - IAD

1 stop5h 35mDelta

Mon 5/195:50 pmIAD - BMI

1 stop5h 57mDelta

Deal found 3/27

$289

Sat 5/316:47 pmSTL - IAD

1 stop4h 15mAmerican Airlines

Sat 6/75:41 pmIAD - STL

1 stop7h 15mAmerican Airlines

Deal found 3/27

$297

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 March 28, 2025.

Wed 4/235:59 pmORD - IAD

Nonstop2h 02mUnited Airlines

Thu 4/243:30 pmIAD - ORD

Nonstop2h 14mUnited Airlines

Deal found 3/26

$177

Fri 4/119:54 amORD - IAD

1 stop6h 11mFrontier

Tue 4/158:34 pmIAD - ORD

1 stop12h 11mFrontier

Deal found 3/27

$178

Thu 5/16:04 amMDW - IAD

1 stop4h 19mDelta

Tue 5/69:20 amIAD - MDW

1 stop4h 15mDelta

Deal found 3/27

$182

Thu 4/177:10 pmORD - IAD

1 stop15h 13mMultiple Airlines

Thu 4/245:25 pmIAD - ORD

1 stop7h 14mMultiple Airlines

Deal found 3/27

$233

Thu 4/177:10 pmORD - IAD

1 stop15h 13mSun Country Air

Mon 4/2111:37 amIAD - ORD

1 stop7h 29mSun Country Air

Deal found 3/25

$240

Fri 4/1812:07 pmORD - IAD

1 stop6h 34mAmerican Airlines

Sun 4/205:00 amIAD - ORD

1 stop4h 49mAmerican Airlines

Deal found 3/26

$288

Thu 4/1010:38 amMLI - IAD

1 stop8h 31mAllegiant Air

Mon 4/1410:07 amIAD - MLI

1 stop8h 39mAllegiant Air

Deal found 3/26

$302

Sun 4/135:15 amMDW - IAD

1 stop14h 29mFrontier

Wed 4/164:29 pmIAD - MDW

1 stop6h 04mFrontier

Deal found 3/27

$180

Thu 5/15:30 amORD - IAD

1 stop4h 53mDelta

Tue 5/612:29 pmIAD - ORD

1 stop4h 59mDelta

Deal found 3/27

$182

Wed 4/231:12 pmSTL - IAD

1 stop6h 49mUnited Airlines

Sat 4/268:35 amIAD - STL

Nonstop2h 23mUnited Airlines

Deal found 3/27

$207

Wed 4/235:41 pmSTL - IAD

1 stop21h 54mFrontier

Sat 4/265:35 pmIAD - STL

1 stop7h 29mFrontier

Deal found 3/27

$208

Sat 4/2610:30 amSTL - IAD

1 stop5h 52mDelta

Mon 4/286:00 amIAD - STL

1 stop6h 45mDelta

Deal found 3/27

$217

Last-minute flights from Illinois to Dulles Intl
Discover last-minute flight deals from Illinois to Dulles Intl. Data last updated March 28, 2025 and is based on user searches.

Tue 4/14:40 pmORD - IAD

3 stops22h 35mMultiple Airlines

Mon 5/58:25 amIAD - ORD

3 stops23h 38mMultiple Airlines

Deal found 3/26

$371

Tue 4/16:33 pmORD - IAD

1 stop20h 39mUnited Airlines

Mon 5/55:10 pmIAD - ORD

Nonstop2h 16mUnited Airlines

Deal found 3/26

$411

Wed 4/24:57 pmSTL - IAD

1 stop23h 07mFrontier

Mon 4/75:54 pmIAD - STL

1 stop6h 52mFrontier

Deal found 3/26

$246

Wed 4/26:00 amBMI - IAD

1 stop5h 53mDelta

Wed 4/2310:15 amIAD - BMI

1 stop6h 04mDelta

Deal found 3/27

$523

Thu 4/310:19 amMDW - IAD

1 stop5h 45mFrontier

Mon 4/73:28 pmIAD - MDW

1 stop9h 22mFrontier

Deal found 3/27

$198

Thu 4/35:25 pmMLI - IAD

2 stops12h 56mUnited Airlines

Mon 4/710:15 pmIAD - MLI

2 stops12h 57mUnited Airlines

Deal found 3/25

$593

Thu 4/311:41 amEVV - IAD

1 stop6h 10mDelta

Sun 4/67:35 amIAD - EVV

1 stop4h 25mDelta

Deal found 3/27

$607

Fri 4/49:54 amORD - IAD

1 stop6h 11mFrontier

Mon 4/74:38 pmIAD - ORD

1 stop8h 45mFrontier

Deal found 3/27

$198

Fri 4/48:25 amSTL - IAD

Nonstop2h 09mUnited Airlines

Sun 4/68:35 amIAD - STL

Nonstop2h 23mUnited Airlines

Deal found 3/25

$529

Sat 4/56:45 amORD - IAD

1 stop3h 46mDelta

Tue 4/81:35 pmIAD - ORD

1 stop3h 36mDelta

Deal found 3/27

$297

Sun 4/61:30 pmORD - IAD

1 stop5h 11mAmerican Airlines

Wed 4/99:10 amIAD - ORD

1 stop6h 05mAmerican Airlines

Deal found 3/27

$373

Mon 4/76:42 pmMDW - IAD

1 stop3h 18mDelta

Wed 4/96:00 amIAD - MDW

1 stop3h 43mDelta

Deal found 3/27

$380

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 March 28, 2025.

Fri 4/119:54 amORD - IAD

1 stop6h 11mFrontier

Deal found 3/27

$88

Tue 5/1311:10 amORD - IAD

Nonstop1h 56mUnited Airlines

Deal found 3/27

$89

Fri 4/118:56 amMDW - IAD

1 stop5h 58mFrontier

Deal found 3/27

$90

Sat 5/318:15 amSTL - IAD

Nonstop2h 08mUnited Airlines

Deal found 3/26

$90

Tue 5/276:25 pmMDW - IAD

1 stop3h 29mDelta

Deal found 3/27

$94

Tue 4/299:30 amORD - IAD

1 stop6h 09mDelta

Deal found 3/27

$94

Wed 4/306:00 amSTL - IAD

1 stop4h 23mDelta

Deal found 3/26

$99

Wed 5/215:45 pmSTL - IAD

1 stop17h 47mFrontier

Deal found 3/27

$106

Thu 4/177:10 pmORD - IAD

1 stop15h 13mSun Country Air

Deal found 3/26

$113

Sun 4/66:10 pmMDW - IAD

1 stop14h 07mAllegiant Air

Deal found 3/27

$130

Fri 5/307:35 pmORD - IAD

2 stops18h 09mMultiple Airlines

Deal found 3/27

$130

Tue 5/275:00 amORD - IAD

1 stop7h 22mAmerican Airlines

Deal found 3/27

$134

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Thu 4/17

8:45 am-11:44 am

Nonstop1h 59m

Washington, D.C. Dulles Intl

Thu 4/17

10:20 pm-11:29 pm

Nonstop2h 09m

$177

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 4/11

9:54 am-5:05 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Tue 4/15

8:34 pm-7:45 am

1 stop12h 11m

$178

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Sun 4/13

5:15 am-8:44 pm

1 stop14h 29m

Washington, D.C. Dulles Intl

Wed 4/16

4:29 pm-9:33 pm

1 stop6h 04m

$180

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Thu 5/1

6:04 am-11:23 am

1 stop4h 19m

Washington, D.C. Dulles Intl

Tue 5/6

9:20 am-12:35 pm

1 stop4h 15m

$182

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Wed 4/30

5:30 am-11:23 am

1 stop4h 53m

Washington, D.C. Dulles Intl

Mon 5/5

5:32 pm-11:59 pm

1 stop7h 27m

$182

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Wed 4/23

1:12 pm-9:01 pm

1 stop6h 49m

Washington, D.C. Dulles Intl

Sat 4/26

8:35 am-9:58 am

Nonstop2h 23m

$207

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Wed 4/23

5:41 pm-4:35 pm

1 stop21h 54m

Washington, D.C. Dulles Intl

Sat 4/26

5:35 pm-12:04 am

1 stop7h 29m

$208

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Sat 4/26

6:50 am-11:31 am

1 stop3h 41m

Washington, D.C. Dulles Intl

Mon 4/28

7:46 pm-11:36 pm

1 stop4h 50m

$217

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Thu 5/8

6:00 am-2:23 pm

1 stop7h 23m

Washington, D.C. Dulles Intl

Sun 5/11

10:07 pm-11:15 pm

Nonstop2h 08m

$265

BloomingtonWashington, D.C.

BMI - IAD

BMIIAD

Bloomington-Normal

Tue 5/13

5:00 pm-11:35 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

Mon 5/19

5:50 pm-10:47 pm

1 stop5h 57m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Washington, D.C. Dulles Intl Airport

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 $385). 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.

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

7,896 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

7,896 reviews

Delta

8.0

Very good

7,896 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

8,603 reviews

Delta

8.0

Very good

7,896 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

731 reviews

Delta

8.0

Very good

7,896 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

7,896 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

6.9

Okay

348 reviews

Delta

8.0

Very good

7,896 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 Frontier, which is currently one of the cheapest options available, starting at $88. United Airlines flights start at $89 while deals on Delta start at $94 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 Avianca (90%), Air China (89%) 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 $96. On average you can expect to pay $1,723. The most popular route, (Chicago O'Hare Intl - Washington, D.C. Dulles Intl), can usually be booked for $177.
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 $385). 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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Alexandria

Fairfax

Tysons

Springfield

Rockville

Woodbridge

Gaithersburg

Fredericksburg

Linthicum Heights

Silver Spring

Falls Church

Laurel

Easton

Herndon

Sterling

Bowie

Gettysburg

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$190	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$109	Average$318	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$176	Average$386	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$181	Average$378	FlexibilityNo cancel fee	On-time69%

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$88+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Dulles Intl with Cheapflights

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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 March 28, 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 March 28, 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 March 28, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Washington, D.C. Dulles Intl Airport

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 March 28, 2025.

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

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

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 March 28, 2025.