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$80+ Cheap flights from Reagan-National (DCA) to Illinois

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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — ORD
Dec 29 — Jan 51
Sun 12/29
Sun 1/5
1 adult, Economy
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Cheap flight deals from Reagan-National to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 24, 2024.

Round-trip from

$168
(Frontier)

One-way from

$80
(Frontier)
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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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 December 24, 2024.

This American Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/284:59 pmDCA - PIA
1 stop5h 56mAmerican Airlines
Tue 12/312:41 pmPIA - DCA
1 stop6h 49mAmerican Airlines
Deal found 12/22$323
This Trip.com deal was found by Cheapflights users on 12/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:00 pmDCA - ORD
1 stop30h 46mFrontier
Thu 1/21:07 pmORD - DCA
1 stop22h 01mFrontier
Deal found 12/23$337
This Gotogate deal was found by Cheapflights users on 12/22. 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.
Wed 12/256:00 pmDCA - STL
1 stop28h 19mFrontier
Fri 1/106:49 pmSTL - DCA
1 stop26h 07mFrontier
Deal found 12/22$348
This American Airlines deal was found by Cheapflights users on 12/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:29 amDCA - ORD
1 stop5h 32mAmerican Airlines
Wed 12/251:33 pmORD - DCA
Nonstop1h 56mAmerican Airlines
Deal found 12/23$353
This Southwest deal was found by Cheapflights users on 12/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/319:25 amDCA - MDW
Nonstop2h 05mSouthwest
Tue 1/711:15 amMDW - DCA
Nonstop1h 45mSouthwest
Deal found 12/23$359
This Delta deal was found by Cheapflights users on 12/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:00 amDCA - MDW
1 stop6h 08mDelta
Tue 1/710:57 amMDW - DCA
1 stop5h 23mDelta
Deal found 12/23$412
This Southwest deal was found by Cheapflights users on 12/23. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/282:00 pmDCA - ORD
1 stop8h 30mSouthwest
Sat 2/227:00 amORD - DCA
1 stop7h 05mSouthwest
Deal found 12/23$434
This United Airlines deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/258:30 amDCA - ORD
Nonstop2h 18mUnited Airlines
Tue 1/286:30 amORD - DCA
Nonstop2h 02mUnited Airlines
Deal found 12/22$450
This American Airlines deal was found by Cheapflights users on 12/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/248:10 pmDCA - STL
Nonstop2h 35mAmerican Airlines
Tue 1/216:00 amSTL - DCA
Nonstop2h 20mAmerican Airlines
Deal found 12/23$453
This Southwest deal was found by Cheapflights users on 12/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:55 amDCA - STL
1 stop5h 10mSouthwest
Fri 1/107:15 pmSTL - DCA
Nonstop1h 50mSouthwest
Deal found 12/22$462
This Delta deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:05 amDCA - ORD
1 stop7h 27mDelta
Tue 1/286:00 amORD - DCA
1 stop5h 59mDelta
Deal found 12/22$469
This Delta deal was found by Cheapflights users on 12/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:42 pmDCA - STL
1 stop5h 01mDelta
Tue 1/216:30 amSTL - DCA
1 stop4h 30mDelta
Deal found 12/23$472

Find flights from Reagan-National to Illinois within your budget

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 December 24, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sun 1/12

6:00 pm-12:35 am

1 stop7h 35m

Chicago O'Hare Intl

Sun 1/19

7:25 am-4:59 pm

1 stop8h 34m

$168

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Fri 1/10

1:01 pm-12:13 am

1 stop12h 12m

Chicago Midway

Sun 1/12

7:15 am-12:01 pm

1 stop27h 46m

$176

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 1/18

1:00 pm-5:59 pm

1 stop5h 59m

Chicago O'Hare Intl

Tue 1/21

9:05 am-6:01 pm

1 stop7h 56m

$182

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Fri 1/17

7:02 am-8:20 am

Nonstop2h 18m

Chicago O'Hare Intl

Mon 1/20

7:30 am-10:43 am

Nonstop2h 13m

$191

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Fri 1/24

8:45 pm-10:04 pm

Nonstop2h 19m

Chicago O'Hare Intl

Mon 1/27

8:25 pm-11:20 pm

Nonstop1h 55m

$192

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Fri 1/17

6:55 am-8:10 am

Nonstop2h 15m

Chicago Midway

Mon 1/20

6:25 am-9:15 am

Nonstop1h 50m

$192

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 1/18

6:00 am-9:01 am

1 stop4h 01m

Chicago O'Hare Intl

Mon 1/20

6:00 am-1:00 pm

1 stop6h 00m

$210

Washington, D.C.Chicago

DCA - MDW

DCAMDW

Washington, D.C. Reagan-National

Sat 1/18

6:00 am-8:54 am

1 stop3h 54m

Chicago Midway

Mon 1/20

6:00 am-11:26 am

1 stop4h 26m

$210

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Sat 2/15

4:27 pm-6:00 pm

Nonstop2h 33m

Lambert-St Louis

Sun 2/16

6:04 am-9:19 am

Nonstop2h 15m

$230

Washington, D.C.St. Louis

DCA - STL

DCASTL

Washington, D.C. Reagan-National

Fri 1/17

11:30 am-3:38 pm

1 stop5h 08m

Lambert-St Louis

Tue 1/21

5:30 pm-10:47 pm

1 stop4h 17m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 39 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.

Travel insights for flights from Reagan-National to Illinois

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

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 $317). 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 December 24, 2024.

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 December 24, 2024.

The most flights from DCA to USIL are scheduled on a Monday (38 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 December 24, 2024.
Peruse reviews from past customers who have flown with American Airlines, Delta and United Airlines from Washington, D.C. to Illinois to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,765 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,765 reviews
Southwest
8.1
Very good
4,765 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,555 reviews
Southwest
8.1
Very good
4,765 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,588 reviews
Southwest
8.1
Very good
4,765 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,263 reviews
Southwest
8.1
Very good
4,765 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,009 reviews
Southwest
8.1
Very good
4,765 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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.

  • 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 $80 on Frontier. Other airlines that offer cheap prices include JetBlue from $91 and United Airlines from $96 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 Japan Airlines (97%), Republic Airways (97%) or ANA (95%) 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 $114. While the most popular route (Washington, D.C. Reagan-National - Chicago O'Hare Intl) can be booked for $165 on average our data indicates $879 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 $317). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Reagan-National to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Miami flights
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Reagan-National to Orlando flights
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Dulles Intl to Las Vegas flights
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Reagan-National to Dallas/Fort Worth flights
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Dulles Intl to Denver flights
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Dulles Intl to Salt Lake City flights
Reagan-National to Sky Harbor Intl flights
Dulles Intl to Tampa flights
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Reagan-National to Boston flights
Baltimore to Sky Harbor Intl flights
Baltimore to Denver flights
Reagan-National to Tampa flights
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Dulles Intl to Honolulu flights
Baltimore to O'Hare Intl flights
Dulles Intl to San Francisco flights
Baltimore to Tampa flights
Dulles Intl to Hobby flights
Dulles Intl to O'Hare Intl flights
Baltimore to George Bush Intcntl flights
Reagan-National to Seattle flights
Baltimore to Boston flights
Dulles Intl to Atlanta flights
Reagan-National to Denver flights
Baltimore to San Francisco flights
Baltimore to Salt Lake City flights
Reagan-National to O'Hare Intl flights
Dulles Intl to West Palm Beach flights

Top 5 airlines flying from Reagan-National to Illinois

Discover the top 5 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 December 24, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$101Average$234FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$157Average$324FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$160Average$391FlexibilityNo cancel feeOn-time71%
DeltaCheapest$175Average$281FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$382FlexibilityNo cancel feeOn-time69%
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