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

For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $79. Users have also found prices from $79 and $99 on Southwest and Delta, respectively.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National 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. Reagan-National Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Reagan-National 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).

What are the most popular routes from Illinois to Washington, D.C. Reagan-National Airport?

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

What are the cheapest flights from Illinois to Washington, D.C. Reagan-National Airport?

While on average a flight from Illinois to Washington, D.C. Reagan-National Airport is generally $340, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Chicago O'Hare Intl - Washington, D.C. Reagan-National), you can expect to pay $157 for that flight.

What are the most reliable airlines from Illinois to Washington, D.C. Reagan-National Airport?

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 Illinois to Washington, D.C. Reagan-National Airport on time: SkyWest Airlines (100%), Air New Zealand (70%), United Airlines (66%).

What are the most popular airlines that fly from Illinois to Washington, D.C. Reagan-National Airport?

The most popular airlines flying from Illinois to Washington, D.C. Reagan-National Airport are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

How far in advance should I book a flight from Illinois to Washington, D.C. Reagan-National Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 42 days in advance, which can save you up to 63% on flights from Illinois to Washington, D.C. Reagan-National Airport compared to booking the week you need them. Waiting 42 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $244. For sooner than that we have options available in the next 3 days from $375.

What is the cheapest month to fly from Illinois to Washington, D.C. Reagan-National Airport?

Flights from Illinois to Washington, D.C. Reagan-National Airport lean towards being more expensive in January. Prices are generally better when you fly from Illinois to Washington, D.C. Reagan-National Airport in August, with the cheapest ticket starting at $74.

Can I find deals for flights from Illinois to Reagan-National that include hotel bookings?

Yes. In addition to deals on Illinois to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Illinois to Reagan-National?

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

Can I find deals for business class flights from Illinois to Reagan-National?

Yes. Cheapflights offers flight deals from Illinois to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$79+ Flights from Illinois to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Illinois to Reagan-National

Round-trip from	$157 (United Airlines)
One-way from	$79 (American Airlines)
Popular in	January
Cheapest in	August
Average price	$224
Good round-trip deal	$157 or less
Good one-way deal	$125 or less

From Illinois to Washington, D.C. Reagan-National

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One-way flight from Illinois to Washington, D.C. Reagan-National

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Highest demand for flights based on searches. 4% potential increase in price ($9 potential increase over avg. RT price).

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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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

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

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Find flight deals from Illinois to Reagan-National

Cheapest flights from Illinois to Reagan-National
Explore the most affordable flight options available from Illinois to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

Sat 9/207:00 amORD - DCA

Nonstop1h 58mUnited Airlines

Tue 9/237:00 pmDCA - ORD

Nonstop2h 15mUnited Airlines

Deal found 7/23

$157

Thu 9/118:30 pmMDW - DCA

Nonstop1h 55mSouthwest

Sat 9/137:05 pmDCA - MDW

Nonstop2h 00mSouthwest

Deal found 7/24

$157

Thu 8/143:32 pmORD - DCA

Nonstop1h 55mAmerican Airlines

Mon 8/1810:55 amDCA - ORD

Nonstop2h 14mAmerican Airlines

Deal found 7/23

$158

Tue 8/193:10 pmORD - DCA

1 stop6h 50mSouthwest

Sat 8/236:55 amDCA - ORD

1 stop6h 50mSouthwest

Deal found 7/22

$177

Wed 9/2410:54 amSTL - DCA

Nonstop2h 04mAmerican Airlines

Mon 9/2911:31 amDCA - STL

Nonstop2h 20mAmerican Airlines

Deal found 7/23

$179

Thu 8/141:10 pmSTL - DCA

Nonstop2h 05mSouthwest

Mon 8/186:10 amDCA - STL

1 stop5h 55mSouthwest

Deal found 7/23

$189

Wed 8/202:00 pmORD - DCA

1 stop3h 52mDelta

Sat 8/2310:11 amDCA - ORD

1 stop5h 08mDelta

Deal found 7/24

$197

Wed 8/209:31 amMDW - DCA

1 stop6h 02mDelta

Sat 8/236:00 amDCA - MDW

1 stop3h 35mDelta

Deal found 7/24

$197

Tue 8/267:00 amSTL - DCA

1 stop4h 40mDelta

Thu 8/288:59 amDCA - STL

1 stop6h 38mDelta

Deal found 7/23

$199

Fri 10/171:36 pmORD - DCA

1 stop8h 20mJetBlue

Mon 10/206:25 amDCA - ORD

1 stop6h 45mJetBlue

Deal found 7/24

$203

Wed 7/307:00 amORD - DCA

1 stop13h 57mFrontier

Sat 8/96:00 pmDCA - ORD

1 stop7h 32mFrontier

Deal found 7/23

$218

Wed 8/276:18 pmMLI - DCA

1 stop4h 32mAmerican Airlines

Sun 8/317:00 amDCA - MLI

1 stop4h 51mAmerican Airlines

Deal found 7/24

$225

Best flights from Illinois to Reagan-National
Discover carefully curated flight deals from Illinois to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2025.

Sat 9/207:00 amORD - DCA

Nonstop1h 58mUnited Airlines

Tue 9/237:00 pmDCA - ORD

Nonstop2h 15mUnited Airlines

Deal found 7/23

$157

Thu 9/118:30 pmMDW - DCA

Nonstop1h 55mSouthwest

Sat 9/137:05 pmDCA - MDW

Nonstop2h 00mSouthwest

Deal found 7/24

$157

Thu 8/143:32 pmORD - DCA

Nonstop1h 55mAmerican Airlines

Mon 8/1810:55 amDCA - ORD

Nonstop2h 14mAmerican Airlines

Deal found 7/23

$158

Wed 8/202:00 pmORD - DCA

1 stop3h 52mDelta

Sat 8/2310:11 amDCA - ORD

1 stop5h 08mDelta

Deal found 7/24

$197

Fri 10/171:36 pmORD - DCA

1 stop8h 20mJetBlue

Mon 10/206:25 amDCA - ORD

1 stop6h 45mJetBlue

Deal found 7/24

$203

Wed 7/307:00 amORD - DCA

1 stop13h 57mFrontier

Sat 8/96:00 pmDCA - ORD

1 stop7h 32mFrontier

Deal found 7/23

$218

Tue 8/193:10 pmORD - DCA

1 stop6h 50mSouthwest

Sat 8/236:55 amDCA - ORD

1 stop6h 50mSouthwest

Deal found 7/22

$177

Thu 8/146:02 amSTL - DCA

Nonstop2h 01mAmerican Airlines

Mon 8/188:19 amDCA - STL

Nonstop2h 21mAmerican Airlines

Deal found 7/23

$181

Thu 8/143:40 pmSTL - DCA

Nonstop2h 00mSouthwest

Mon 8/188:00 amDCA - STL

Nonstop2h 10mSouthwest

Deal found 7/24

$179

Wed 8/209:31 amMDW - DCA

1 stop6h 02mDelta

Sat 8/236:00 amDCA - MDW

1 stop3h 35mDelta

Deal found 7/24

$197

Tue 8/267:00 amSTL - DCA

1 stop4h 40mDelta

Thu 8/288:59 amDCA - STL

1 stop6h 38mDelta

Deal found 7/23

$199

Wed 8/137:29 pmSTL - DCA

1 stop15h 35mFrontier

Wed 9/101:00 pmDCA - STL

1 stop21h 06mFrontier

Deal found 7/24

$225

Last-minute flights from Illinois to Reagan-National
Discover last-minute flight deals from Illinois to Reagan-National. Data last updated July 25, 2025 and is based on user searches.

Tue 7/2912:25 pmMDW - DCA

Nonstop1h 50mSouthwest

Wed 8/136:05 amDCA - MDW

Nonstop1h 55mSouthwest

Deal found 7/22

$332

Tue 7/296:20 pmMDW - DCA

1 stop3h 39mDelta

Wed 8/136:00 amDCA - MDW

1 stop3h 35mDelta

Deal found 7/22

$362

Wed 7/307:00 amORD - DCA

1 stop13h 57mFrontier

Sat 8/96:00 pmDCA - ORD

1 stop7h 32mFrontier

Deal found 7/23

$218

Wed 7/307:29 pmSTL - DCA

1 stop15h 35mFrontier

Tue 8/51:00 pmDCA - STL

1 stop21h 11mFrontier

Deal found 7/23

$265

Wed 7/307:05 amORD - DCA

1 stop4h 34mDelta

Sat 8/164:05 pmDCA - ORD

1 stop6h 31mDelta

Deal found 7/22

$362

Thu 7/316:30 amMLI - DCA

1 stop5h 28mUnited Airlines

Sun 8/36:25 amDCA - MLI

1 stop4h 57mUnited Airlines

Deal found 7/24

$336

Fri 8/112:35 pmMDW - DCA

1 stop8h 22mFrontier

Sat 8/161:00 pmDCA - MDW

1 stop8h 54mFrontier

Deal found 7/23

$228

Fri 8/12:51 pmCMI - DCA

1 stop4h 53mAmerican Airlines

Sun 8/107:00 amDCA - CMI

1 stop4h 55mAmerican Airlines

Deal found 7/22

$338

Sat 8/26:37 pmMLI - DCA

1 stop4h 20mAmerican Airlines

Sat 8/911:59 amDCA - MLI

1 stop4h 52mAmerican Airlines

Deal found 7/23

$284

Sat 8/25:25 pmPIA - DCA

1 stop4h 17mUnited Airlines

Sat 8/96:25 amDCA - PIA

1 stop4h 54mUnited Airlines

Deal found 7/23

$284

Sat 8/27:00 amORD - DCA

1 stop5h 54mAmerican Airlines

Fri 8/153:50 pmDCA - ORD

Nonstop2h 21mAmerican Airlines

Deal found 7/24

$319

Mon 8/44:11 pmPIA - DCA

1 stop4h 49mAmerican Airlines

Mon 3/211:59 amDCA - PIA

1 stop4h 45mAmerican Airlines

Deal found 7/23

$279

One-way flights from Illinois to Reagan-National
Search for one-way flight options from Illinois to Reagan-National. Find affordable one-way fares based on user searches. Data last updated July 25, 2025.

Mon 8/255:21 pmORD - DCA

Nonstop1h 55mAmerican Airlines

Deal found 7/21

$79

Mon 9/1512:15 pmMDW - DCA

Nonstop1h 55mSouthwest

Deal found 7/23

$79

Wed 8/136:00 amORD - DCA

1 stop8h 50mSouthwest

Deal found 7/23

$89

Sat 8/236:02 amSTL - DCA

Nonstop2h 01mAmerican Airlines

Deal found 7/24

$90

Mon 8/253:30 pmORD - DCA

1 stop7h 16mDelta

Deal found 7/23

$99

Thu 8/219:31 amMDW - DCA

1 stop6h 02mDelta

Deal found 7/24

$99

Sat 8/235:30 pmSTL - DCA

1 stop4h 13mUnited Airlines

Deal found 7/24

$100

Wed 10/221:36 pmORD - DCA

1 stop4h 45mJetBlue

Deal found 7/24

$104

Fri 9/199:50 amSTL - DCA

1 stop4h 05mSouthwest

Deal found 7/24

$105

Wed 8/137:00 amORD - DCA

1 stop8h 59mFrontier

Deal found 7/24

$109

Fri 9/266:42 pmSTL - DCA

1 stop4h 00mDelta

Deal found 7/24

$110

Mon 9/16:00 amORD - DCA

Nonstop1h 58mUnited Airlines

Deal found 7/23

$111

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Sat 9/20

7:00 am-9:58 am

Nonstop1h 58m

Washington, D.C. Reagan-National

Tue 9/23

7:00 pm-8:15 pm

Nonstop2h 15m

$157

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Thu 9/11

8:30 pm-11:25 pm

Nonstop1h 55m

Washington, D.C. Reagan-National

Sat 9/13

7:05 pm-8:05 pm

Nonstop2h 00m

$157

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 8/14

3:32 pm-6:27 pm

Nonstop1h 55m

Washington, D.C. Reagan-National

Mon 8/18

10:55 am-12:09 pm

Nonstop2h 14m

$158

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 8/19

3:10 pm-11:00 pm

1 stop6h 50m

Washington, D.C. Reagan-National

Sat 8/23

6:55 am-12:45 pm

1 stop6h 50m

$177

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Mon 9/8

6:00 am-9:03 am

Nonstop2h 03m

Washington, D.C. Reagan-National

Thu 9/11

8:30 am-10:21 am

Nonstop2h 51m

$179

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Thu 8/14

1:10 pm-4:15 pm

Nonstop2h 05m

Washington, D.C. Reagan-National

Mon 8/18

6:10 am-11:05 am

1 stop5h 55m

$189

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 8/20

2:00 pm-6:52 pm

1 stop3h 52m

Washington, D.C. Reagan-National

Sat 8/23

10:11 am-2:19 pm

1 stop5h 08m

$197

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Wed 8/20

9:31 am-4:33 pm

1 stop6h 02m

Washington, D.C. Reagan-National

Sat 8/23

6:00 am-8:35 am

1 stop3h 35m

$197

St. LouisWashington, D.C.

STL - DCA

STLDCA

Lambert-St Louis

Tue 8/26

7:00 am-12:40 pm

1 stop4h 40m

Washington, D.C. Reagan-National

Thu 8/28

8:59 am-2:37 pm

1 stop6h 38m

$199

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Fri 10/17

1:36 pm-10:56 pm

1 stop8h 20m

Washington, D.C. Reagan-National

Mon 10/20

6:25 am-12:10 pm

1 stop6h 45m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 47 results

...

Best time to book a flight from Illinois to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National 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. Reagan-National Airport

What is the cheapest month to book a flight from Illinois to Washington, D.C. Reagan-National Airport?

Currently, February is the cheapest month in which you can book a flight from Illinois to Washington, D.C. Reagan-National Airport (average of $278). Flying from Illinois to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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 DCA?

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. Reagan-National Airport as you normally would.

Weekly flight availability from Illinois to Washington, D.C. Reagan-National Airport

The most flights from USIL to DCA are scheduled on a Wednesday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).

Reviews of airlines servicing Reagan-National

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Illinois to Washington, D.C. Reagan-National Airport. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,235 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,967 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,876 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

JetBlue

7.3

Good

2,912 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,235 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

What are the cheapest airlines to fly from Illinois to Washington, D.C. Reagan-National Airport one-way?
For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $79. Users have also found prices from $79 and $99 on Southwest and Delta, respectively.
What are the most popular routes from Illinois to Washington, D.C. Reagan-National Airport?
The most popular flight routes from Illinois to Washington, D.C. Reagan-National Airport are Chicago O'Hare Intl - Washington, D.C. Reagan-National, Chicago Midway - Washington, D.C. Reagan-National and Lambert-St Louis - Washington, D.C. Reagan-National.
What are the most reliable airlines from Illinois to Washington, D.C. Reagan-National Airport?
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 Illinois to Washington, D.C. Reagan-National Airport on time: SkyWest Airlines (100%), Air New Zealand (70%), United Airlines (66%).
What are the cheapest flights from Illinois to Washington, D.C. Reagan-National Airport?
While on average a flight from Illinois to Washington, D.C. Reagan-National Airport is generally $340, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Chicago O'Hare Intl - Washington, D.C. Reagan-National), you can expect to pay $157 for that flight.
Can I find deals for flights from Illinois to Reagan-National that include hotel bookings?
Yes. In addition to deals on Illinois to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Reagan-National.
Can I find deals for business class flights from Illinois to Reagan-National?
Yes. Cheapflights offers flight deals from Illinois to Reagan-National 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. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Illinois to Washington, D.C. Reagan-National Airport (average of $278). Flying from Illinois to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Fredericksburg

Gaithersburg

Easton

Towson

Linthicum Heights

Fairfax

Manassas

Falls Church

Waldorf

Laurel

Rockville

Oxon Hill

Springfield

National Harbor

Dundalk

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Illinois to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$105	Average$168	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$151	Average$371	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$166	Average$248	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$178	Average$305	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$181	Average$357	FlexibilityNo cancel fee	On-time69%

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$79+ Cheap flights from Illinois to Reagan-National (DCA)

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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Reagan-National with Cheapflights

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Cheap flight deals from Illinois to Reagan-National

Keep the following information in mind while searching for Illinois to Reagan-National flight deals. Data was last updated July 25, 2025.

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 Reagan-National

Cheapest flights from Illinois to Reagan-NationalExplore the most affordable flight options available from Illinois to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

Explore the most affordable flight options available from Illinois to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Illinois to Reagan-National

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

Cheapflights Insights

Everything you need to know about your flight from Illinois to Washington, D.C. Reagan-National Airport

What is the cheapest month to book a flight from Illinois to Washington, D.C. Reagan-National Airport?

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

Find hourly flight availability from Illinois to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2025.

Weekly flight availability from Illinois to Washington, D.C. Reagan-National Airport

Reviews of airlines servicing Reagan-National

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Illinois to Washington, D.C. Reagan-National Airport. Reviews also offer insight into each airline's 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 Reagan-National. 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. Reagan-National Airport one-way?

What are the most popular routes from Illinois to Washington, D.C. Reagan-National Airport?

What are the most reliable airlines from Illinois to Washington, D.C. Reagan-National Airport?

What are the cheapest flights from Illinois to Washington, D.C. Reagan-National Airport?

Can I find deals for flights from Illinois to Reagan-National that include hotel bookings?

How can I find direct flights from Illinois to Reagan-National?

Can I find deals for business class flights from Illinois to Reagan-National?

What is the cheapest month to book a flight from Illinois to Washington, D.C. Reagan-National Airport?

Traveling to a place near Washington, D.C. Reagan-National Airport?

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Alternative routes for Illinois to Reagan-National

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

Top 5 airlines flying from Illinois to Reagan-National

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Cheapest flights from Illinois to Reagan-National
Explore the most affordable flight options available from Illinois to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2025.