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Cheap flights from Reagan-National (DCA) to Illinois - Compare and Save

DCA — ORD
Oct 26 — Nov 21
Sun 10/26
Sun 11/2
1 adult, Economy
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Cheap flight deals from Reagan-National to Illinois

Keep the following information in mind while searching for Reagan-National to Illinois flight deals. Data was last updated September 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$173
(Priceline)

One-way from

$85
(lastminute.com)

Popular in

April

Cheapest in

September

Average price

$222

Good round-trip deal

$266 or less

Good one-way deal

$148 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Chicago (CHI) flights.
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From Washington, D.C. Reagan-National to Illinois
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One-way flight from Washington, D.C. Reagan-National to Illinois
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Highest demand for flights based on searches. 8% potential increase in price ($21 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 September 2025
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Price to beat on a round-trip flight from Washington, D.C. Reagan-National to Illinois.
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Price to beat on a one-way flight from Washington, D.C. Reagan-National to Illinois.
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Find flight deals from Reagan-National to Illinois

Cheapest flights from Reagan-National to Illinois
Explore the most affordable flight options available from Reagan-National to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2025.

This Mytrip deal was found by Cheapflights users on 9/24. 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.
Sat 11/81:00 pmDCA - ORD
1 stop11h 29mFrontier
Sat 11/157:15 amORD - DCA
1 stop13h 44mFrontier
Deal found 9/24$173
This Gotogate deal was found by Cheapflights users on 9/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:00 amDCA - ORD
1 stop18h 59mFrontier
Mon 10/276:50 amORD - DCA
1 stop9h 09mFrontier
Deal found 9/24$174
This Priceline deal was found by Cheapflights users on 9/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/201:00 pmDCA - MDW
1 stop12h 24mFrontier
Fri 10/2412:11 pmMDW - DCA
1 stop8h 48mFrontier
Deal found 9/23$175
This Booking.com deal was found by Cheapflights users on 9/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/292:00 pmDCA - MDW
1 stop22h 30mFrontier
Fri 10/3112:30 pmMDW - DCA
1 stop8h 29mFrontier
Deal found 9/24$177
This Gotogate deal was found by Cheapflights users on 9/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:00 amDCA - ORD
1 stop27h 36mFrontier
Mon 10/2710:51 amORD - DCA
1 stop29h 08mFrontier
Deal found 9/26$182
This Mytrip deal was found by Cheapflights users on 9/25. 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.
Sat 10/251:00 pmDCA - ORD
1 stop21h 36mFrontier
Wed 10/297:20 amORD - DCA
1 stop28h 42mFrontier
Deal found 9/25$183
This Booking.com deal was found by Cheapflights users on 9/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:00 amDCA - ORD
1 stop17h 53mFrontier
Wed 10/227:15 amORD - DCA
1 stop13h 44mFrontier
Deal found 9/26$184
This Booking.com deal was found by Cheapflights users on 9/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:31 pmDCA - ORD
1 stop30h 22mFrontier
Sun 10/266:50 amORD - DCA
1 stop28h 14mFrontier
Deal found 9/25$185
This Flightnetwork deal was found by Cheapflights users on 9/25. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:00 amDCA - MDW
1 stop29h 16mFrontier
Thu 10/3012:30 pmMDW - DCA
1 stop8h 29mFrontier
Deal found 9/25$185
This Booking.com deal was found by Cheapflights users on 9/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:00 amDCA - MDW
1 stop18h 36mFrontier
Thu 10/3012:30 pmMDW - DCA
1 stop27h 29mFrontier
Deal found 9/25$187
This Flightnetwork deal was found by Cheapflights users on 9/25. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:00 pmDCA - ORD
1 stop11h 53mFrontier
Mon 10/2710:51 amORD - DCA
1 stop29h 08mFrontier
Deal found 9/25$188
This JetBlue deal was found by Cheapflights users on 9/23. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:25 amDCA - ORD
1 stop6h 57mJetBlue
Wed 10/221:36 pmORD - DCA
1 stop4h 46mJetBlue
Deal found 9/23$203

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Illinois 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 2,558,603 searches. Data last updated September 26, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Illinois that are best for you.

Fly from

Reagan-National

Fly to

Illinois

Route

Depart

Return

Price

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Tue 11/18

4:55 pm-8:52 pm

1 stop4h 57m

Chicago O'Hare Intl

Thu 11/20

8:20 am-2:59 pm

1 stop5h 39m

$208

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sun 11/23

5:44 pm-10:46 pm

1 stop6h 02m

Chicago O'Hare Intl

Thu 11/27

8:20 am-2:59 pm

1 stop5h 39m

$225

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sun 10/12

7:00 am-9:07 am

1 stop27h 07m

Lambert-St Louis

Mon 10/13

7:52 pm-9:59 pm

1 stop25h 07m

$226

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 11/11

11:44 am-1:13 pm

Nonstop2h 29m

Lambert-St Louis

Wed 11/12

6:02 am-9:14 am

Nonstop2h 12m

$229

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Thu 10/23

6:25 am-12:23 pm

1 stop6h 58m

Chicago O'Hare Intl

Fri 10/24

1:35 pm-7:20 pm

1 stop4h 45m

$237

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Tue 11/18

3:20 pm-4:30 pm

Nonstop2h 10m

Chicago Midway

Thu 11/20

5:40 pm-8:30 pm

Nonstop1h 50m

$240

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 11/11

6:45 am-1:14 pm

1 stop7h 29m

Lambert-St Louis

Wed 11/12

9:50 am-12:57 pm

Nonstop2h 07m

$245

Washington, D.C.Peoria

DCA - PIA

DCAPIA

Washington, D.C. Reagan-National

Sat 12/13

6:30 am-10:09 am

1 stop4h 39m

Greater Peoria

Mon 1/19

3:00 pm-8:59 pm

1 stop4h 59m

$249

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Tue 11/11

6:26 pm-9:58 pm

1 stop4h 32m

Lambert-St Louis

Wed 11/12

5:17 pm-11:41 pm

1 stop5h 24m

$249

Washington, D.C.Moline

DCA - MLI

DCAMLI

Washington, D.C. Reagan-National

Mon 11/10

6:30 am-10:15 am

1 stop4h 45m

Moline Quad-City

Sat 11/15

3:55 pm-8:55 pm

1 stop4h 00m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 60 results
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Best time to book a flight from Reagan-National to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Reagan-National 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 Washington, D.C. Reagan-National Airport to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Illinois (average of $245). Flying from Washington, D.C. Reagan-National Airport to Illinois in March is currently the most expensive (average of $321). 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 DCA to IL?

Find hourly flight availability from Reagan-National to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 26, 2025.

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

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

Explore weekly flight availability from Reagan-National to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 26, 2025.

The most flights from DCA to USIL are scheduled on a Monday (47 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 Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated September 26, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Washington, D.C. Reagan-National Airport to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,928 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,161 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Illinois?

    For as low as $229, JetBlue can have you in Illinois from Washington, D.C. Reagan-National Airport in 2h 29m. The distance between Washington, D.C. Reagan-National Airport and Illinois is about 717 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $102 on JetBlue. Other airlines that offer cheap prices include Southwest from $108 and Frontier from $113 one-way.

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

    While some choose either Washington, D.C. Reagan-National - Chicago Midway or Washington, D.C. Reagan-National - Lambert-St Louis, Washington, D.C. Reagan-National - Chicago O'Hare Intl is the most popular route from Washington, D.C. Reagan-National Airport to Illinois.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Reagan-National Airport to Illinois consider choosing Envoy Air (100%), Cathay Pacific (84%) or Alaska Airlines (79%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $115. While the most popular route (Washington, D.C. Reagan-National - Chicago O'Hare Intl) can be booked for $173 on average, our data indicates $852 when flying from Washington, D.C. Reagan-National Airport to Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Reagan-National to Illinois 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 Washington, D.C. Reagan-National Airport to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Illinois (average of $245). Flying from Washington, D.C. Reagan-National Airport to Illinois in March is currently the most expensive (average of $321). 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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Alternative routes for Reagan-National to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dallas/Fort Worth flights
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Dulles Intl to Tampa flights
Baltimore to Hobby flights
Baltimore to Denver flights
Dulles Intl to Austin flights
Baltimore to Sky Harbor Intl flights
Reagan-National to Sky Harbor Intl flights
Reagan-National to Fort Lauderdale flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to Detroit flights
Dulles Intl to Midway flights
Reagan-National to Detroit flights
Dulles Intl to John F Kennedy Intl flights
Reagan-National to Minneapolis flights
Baltimore to New Orleans flights

Top 4 airlines flying from Reagan-National to Illinois

Discover the top 4 airlines that operate flights from Reagan-National to Illinois. 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 2,558,603 searches. Data last updated September 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$207FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$154Average$388FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$178Average$303FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$189Average$356FlexibilityNo cancel feeOn-time69%

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