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Cheap flights from Illinois to Washington, D.C. from $102

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Washington, D.C. departing on 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Frontier Logo
6:00 am - 9:59 pmORD-DCA
14h 59m1 stop
Frontier Logo
1:00 pm - 12:15 amDCA-ORD
12h 15m1 stop
$172Frontier
Find Deal
jue., nov. 6 - jue., nov. 13
Frontier Logo
6:00 am - 4:59 pmORD-DCA
9h 59m1 stop
Frontier Logo
6:00 pm - 12:12 amDCA-ORD
7h 12m1 stop
$173Frontier
Find Deal
vie., oct. 31 - dom., nov. 2
American Airlines Logo
6:00 am - 10:59 amORD-DCA
3h 59m1 stop
American Airlines Logo
2:35 pm - 3:48 pmDCA-ORD
2h 13mnonstop
$202American Airlines
Find Deal
mié., oct. 15 - mié., oct. 15
JetBlue Logo
1:36 pm - 7:22 pmORD-DCA
4h 46m1 stop
JetBlue Logo
6:25 am - 12:22 pmDCA-ORD
6h 57m1 stop
$203JetBlue
Find Deal
mar., oct. 21 - mié., oct. 22
JetBlue Logo
7:00 am - 2:50 pmORD-DCA
6h 50m1 stop
JetBlue Logo
4:55 pm - 8:52 pmDCA-ORD
4h 57m1 stop
$207JetBlue
Find Deal
mar., nov. 4 - mié., nov. 5
United Airlines Logo
3:55 pm - 8:55 pmMLI-DCA
4h 00m1 stop
United Airlines Logo
3:30 pm - 9:17 pmDCA-MLI
6h 47m1 stop
$224United Airlines
Find Deal
lun., nov. 24 - vie., nov. 28
United Airlines Logo
5:18 pm - 10:42 pmPIA-DCA
4h 24m1 stop
United Airlines Logo
6:30 am - 12:39 pmDCA-PIA
7h 09m1 stop
$224United Airlines
Find Deal
vie., oct. 31 - jue., nov. 6
American Airlines Logo
5:20 am - 10:59 amORD-DCA
4h 39m1 stop
American Airlines Logo
2:35 pm - 3:48 pmDCA-ORD
2h 13mnonstop
$238American Airlines
Find Deal
sáb., oct. 11 - sáb., oct. 11
Delta Logo
5:00 pm - 11:41 pmMLI-DCA
5h 41m1 stop
Delta Logo
4:03 pm - 10:20 pmDCA-MLI
7h 17m1 stop
$254Delta
Find Deal
sáb., oct. 11 - mar., oct. 14
Delta Logo
1:08 pm - 6:59 pmMDW-DCA
4h 51m1 stop
Delta Logo
6:00 am - 8:40 amDCA-MDW
3h 40m1 stop
$277Delta
Find Deal
mié., oct. 15 - sáb., oct. 18

American Airlines flights from Illinois to Washington, D.C. Reagan-National Airport

Our best American Airlines deals on Illinois to Washington, D.C. Reagan-National Airport flight tickets
American Airlines
Oct 15
ORD6:00 amChicago O'Hare Intl
3h 59m
1 stop
DCA10:59 amWashington, D.C. Reagan-National
Oct 15
DCA2:35 pmWashington, D.C. Reagan-National
2h 13m
ORD3:48 pmChicago O'Hare Intl
$202
Find similar
American Airlines
Oct 11
ORD5:20 amChicago O'Hare Intl
4h 39m
1 stop
DCA10:59 amWashington, D.C. Reagan-National
Oct 11
DCA2:35 pmWashington, D.C. Reagan-National
2h 13m
ORD3:48 pmChicago O'Hare Intl
$238
Find similar
American Airlines
Dec 3
PIA6:00 amGreater Peoria
3h 59m
1 stop
DCA10:59 amWashington, D.C. Reagan-National
Dec 6
DCA6:00 pmWashington, D.C. Reagan-National
6h 53m
1 stop
PIA11:53 pmGreater Peoria
$249
Find similar

JetBlue flights from Illinois to Washington, D.C. Reagan-National Airport

Our best JetBlue deals on Illinois to Washington, D.C. Reagan-National Airport flight tickets
JetBlue
Oct 21
ORD1:36 pmChicago O'Hare Intl
4h 46m
1 stop
DCA7:22 pmWashington, D.C. Reagan-National
Oct 22
DCA6:25 amWashington, D.C. Reagan-National
6h 57m
1 stop
ORD12:22 pmChicago O'Hare Intl
$203
Find similar
JetBlue
Nov 4
ORD7:00 amChicago O'Hare Intl
6h 50m
1 stop
DCA2:50 pmWashington, D.C. Reagan-National
Nov 5
DCA4:55 pmWashington, D.C. Reagan-National
4h 57m
1 stop
ORD8:52 pmChicago O'Hare Intl
$207
Find similar
JetBlue
Nov 13
ORD6:45 amChicago O'Hare Intl
6h 51m
1 stop
DCA2:36 pmWashington, D.C. Reagan-National
Nov 15
DCA4:55 pmWashington, D.C. Reagan-National
4h 57m
1 stop
ORD8:52 pmChicago O'Hare Intl
$213
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated septiembre 23, 2025.
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

jue. 11/6

6:00 am-9:59 pm

1 stop14h 59m

Washington, D.C. Reagan-National

jue. 11/13

1:00 pm-12:15 am

1 stop12h 15m

$172

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

vie. 10/31

6:00 am-4:59 pm

1 stop9h 59m

Washington, D.C. Reagan-National

dom. 11/2

6:00 pm-12:12 am

1 stop7h 12m

$173

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

mié. 10/15

6:00 am-10:59 am

1 stop3h 59m

Washington, D.C. Reagan-National

mié. 10/15

2:35 pm-3:48 pm

Nonstop2h 13m

$202

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

mar. 10/21

1:36 pm-7:22 pm

1 stop4h 46m

Washington, D.C. Reagan-National

mié. 10/22

6:25 am-12:22 pm

1 stop6h 57m

$203

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

mar. 11/4

7:00 am-2:50 pm

1 stop6h 50m

Washington, D.C. Reagan-National

mié. 11/5

4:55 pm-8:52 pm

1 stop4h 57m

$207

MolineWashington, D.C.

MLI - DCA

MLIDCA

Moline Quad-City

lun. 11/24

3:55 pm-8:55 pm

1 stop4h 00m

Washington, D.C. Reagan-National

vie. 11/28

3:30 pm-9:17 pm

1 stop6h 47m

$224

PeoriaWashington, D.C.

PIA - DCA

PIADCA

Greater Peoria

vie. 10/31

5:18 pm-10:42 pm

1 stop4h 24m

Washington, D.C. Reagan-National

jue. 11/6

6:30 am-12:39 pm

1 stop7h 09m

$224

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

sáb. 10/11

5:20 am-10:59 am

1 stop4h 39m

Washington, D.C. Reagan-National

sáb. 10/11

2:35 pm-3:48 pm

Nonstop2h 13m

$238

MolineWashington, D.C.

MLI - DCA

MLIDCA

Moline Quad-City

sáb. 10/11

5:00 pm-11:41 pm

1 stop5h 41m

Washington, D.C. Reagan-National

mar. 10/14

4:03 pm-10:20 pm

1 stop7h 17m

$254

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

mié. 10/15

1:08 pm-6:59 pm

1 stop4h 51m

Washington, D.C. Reagan-National

sáb. 10/18

6:00 am-8:40 am

1 stop3h 40m

$277

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Illinois to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of August is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Illinois, with most prices found around $256. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of August, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $258.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Illinois to Washington, D.C. Reagan-National Airport is on a Thursday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Thursday will often find tickets for as low as $278. Flights from Illinois to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $358. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Illinois to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the evening. Our users have found flights to Washington, D.C. Reagan-National Airport in the evening for as low as $279. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the afternoon when prices are around $319.

What is the cheapest Illinois to Washington, D.C. Reagan-National flight route?

Fly from Chicago O'Hare Intl to Washington, D.C. Reagan-National for the best Illinois - Washington, D.C. Reagan-National flight prices

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

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $294 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Illinois for as low as $182 on momondo.

What cabin class options are available on Illinois to Washington, D.C. Reagan-National flights?

There are 4 cabin classes available to choose from on Illinois to Washington, D.C. Reagan-National flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Washington, D.C. Reagan-National Airport flights?

No. A direct flight is the cheapest option for a flight between Illinois to Washington, D.C. Reagan-National Airport.

Cheap Illinois to Washington, D.C. Reagan-National Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Washington, D.C. Reagan-National Airport

Best Price Found

$118

Fastest flight time

1h 40m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from Illinois in the past 72 hours is $118. The best round-trip flight deal from Illinois to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $245.
The fastest flight from Illinois to Washington, D.C. Reagan-National Airport takes 1h 40m
Direct flights go from Illinois to Washington, D.C. Reagan-National Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Washington, D.C. Reagan-National Airport?

    Prices for flights from Illinois to Washington, D.C. Reagan-National Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Washington, D.C. Reagan-National Airport?

  • How old do you have to be to fly from Illinois to Washington, D.C. Reagan-National Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Illinois to Washington, D.C. Reagan-National Airport?

Best airlines flying from Illinois to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Illinois to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $85Free CancellationRating
5.8
3,165 reviews
Search Frontier flights
American AirlinesPriceFrom $157Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $166Free CancellationRating
7.9
7,974 reviews
Search Delta flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
SouthwestPriceFrom $191Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg
Springfield
Linthicum Heights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Illinois.

Can I find flights from Illinois to Washington, D.C. with flexible booking policies on momondo?

momondo does allow users to show only those flights to Washington, D.C. from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Washington, D.C..

I’m not ready to book a flight from Illinois to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Illinois to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

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