Cheap flights from Illinois to Washington, D.C. from $90
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 11/10. 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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Fly from
Fly to
Route
Depart
Return
ChicagoBaltimore
ORD Chicago O'Hare Intl - BWI Baltimore/Washington
ORDBWI
Chicago O'Hare Intl
Thu 11/19
6:00 am-8:57 am
Nonstop1h 57m
Baltimore/Washington
Thu 11/26
2:29 pm-3:57 pm
Nonstop2h 28m
ChicagoBaltimore
ORD Chicago O'Hare Intl - BWI Baltimore/Washington
ORDBWI
Chicago O'Hare Intl
Tue 12/1
8:15 am-5:55 pm
1 stop8h 40m
Baltimore/Washington
Sat 12/5
1:54 pm-6:37 pm
1 stop5h 43m
ChicagoBaltimore
ORD Chicago O'Hare Intl - BWI Baltimore/Washington
ORDBWI
Chicago O'Hare Intl
Mon 10/26
2:42 pm-2:50 pm
1 stop23h 08m
Baltimore/Washington
Thu 10/29
9:53 am-11:23 am
Nonstop2h 30m
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Fri 11/6
7:49 pm-5:12 pm
1 stop20h 23m
Washington, D.C. Dulles Intl
Fri 11/13
6:36 pm-8:46 am
2 stops15h 10m
ChicagoBaltimore
ORD Chicago O'Hare Intl - BWI Baltimore/Washington
ORDBWI
Chicago O'Hare Intl
Sat 11/21
8:03 am-11:11 am
Nonstop2h 08m
Baltimore/Washington
Tue 12/1
7:11 am-8:53 am
Nonstop2h 42m
ChicagoBaltimore
ORD Chicago O'Hare Intl - BWI Baltimore/Washington
ORDBWI
Chicago O'Hare Intl
Sat 11/14
8:05 am-11:10 am
Nonstop2h 05m
Baltimore/Washington
Sat 11/14
6:33 pm-8:17 pm
Nonstop2h 44m
ChicagoBaltimore
ORD Chicago O'Hare Intl - BWI Baltimore/Washington
ORDBWI
Chicago O'Hare Intl
Wed 11/4
6:29 pm-9:42 pm
Nonstop2h 13m
Baltimore/Washington
Sat 11/14
6:10 am-7:31 am
Nonstop2h 21m
ChicagoBaltimore
ORD Chicago O'Hare Intl - BWI Baltimore/Washington
ORDBWI
Chicago O'Hare Intl
Sat 12/5
6:25 pm-9:38 pm
Nonstop2h 13m
Baltimore/Washington
Sat 12/12
5:20 pm-6:41 pm
Nonstop2h 21m
ChicagoBaltimore
MDW Chicago Midway - BWI Baltimore/Washington
MDWBWI
Chicago Midway
Sat 11/14
1:25 pm-4:10 pm
Nonstop1h 45m
Baltimore/Washington
Sat 11/14
6:30 pm-7:40 pm
Nonstop2h 10m
ChicagoBaltimore
MDW Chicago Midway - BWI Baltimore/Washington
MDWBWI
Chicago Midway
Wed 11/11
6:00 am-9:00 am
Nonstop2h 00m
Baltimore/Washington
Sat 11/14
3:20 pm-4:30 pm
Nonstop2h 10m
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Illinois to Washington, D.C.
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.?
The month of December is, on average, the cheapest month to fly to Washington, D.C. from Illinois, with most prices found around $301. If you’re not able to fly to Washington, D.C. in December, then November is your next best option. Flight prices from Illinois to Washington, D.C. during November average around $334.
What is the cheapest day to depart on your flight to Washington, D.C.?
On average, the least expensive day to fly to Washington, D.C. from Illinois is on a Friday. momondo users have found tickets for Friday departures for as low as $382. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Washington, D.C. for around $540.
What is the cheapest time of day to depart on your flight to Washington, D.C.?
In the morning is the cheapest time of day to fly from Illinois to Washington, D.C. when you can find flight prices for as low as $409. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $697. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Illinois to Washington, D.C. flight route?
Fly from Chicago O'Hare Intl to Baltimore/Washington for the best Illinois - Washington, D.C. flight prices
How far in advance should I book a flight from Illinois to Washington, D.C.?
You are more likely to see cheaper flights to Washington, D.C. from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $374 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Illinois for as low as $250 on momondo.
What cabin class options are available on Illinois to Washington, D.C. flights?
There are 4 cabin classes available to choose from on Illinois to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Illinois to Washington, D.C.?
Frontier, Delta, and Southwest are the most popular carriers operating from Illinois to Washington, D.C.
What airlines fly to Washington, D.C.?
United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Washington, D.C. from Illinois according to our data. United Airlines is the first choice among our users, with 60% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 6 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.
How many flights depart from Illinois to Washington, D.C. on average per day?
As of October 2026, there are 110 flights per day flying from Illinois to Washington, D.C.. The most common time of day flights depart is 10:00AM, with 41% of flights taking off at noon.
How many flights depart from Illinois to Washington, D.C. on average per week?
772 flights are operational weekly from Illinois to Washington, D.C. as of October 2026. The most popular departure day for this route is Thu, with 17% of flights per week taking off on this day.
Cheap Illinois to Washington, D.C. flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Washington, D.C.
Frequently asked questions about flying from Illinois to Washington, D.C.
When did momondo last update prices for flights from Illinois to Washington, D.C.?
Prices for flights from Illinois to Washington, D.C. refresh daily.
How many operators does momondo search for flights from Illinois to Washington, D.C.?
As of October 2026, there are 6 operators available to choose from for flights from Illinois to Washington, D.C..
How old do you have to be to fly from Illinois to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Washington, D.C. is Boeing 737-800 (14.36% of total bookings). The next most popular plane models are Airbus A319 (11.66%), Boeing 737 MAX 8 (10.14%), and Airbus A321neo (9.41%).
Best airlines flying from Illinois to Washington, D.C.
Compare and see reviews for airlines that fly from Illinois to Washington, D.C. with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $57 | Free Cancellation | Rating 5.6 2,551 reviews | |||
| PriceFrom $141 | Free Cancellation | Rating 7.1 3,048 reviews | |||
| PriceFrom $163 | Free Cancellation | Rating 7.4 10,319 reviews | |||
| PriceFrom $188 | Free Cancellation | Rating 7.9 4,224 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 7.0 12,146 reviews | |||
| PriceFrom $251 | Free Cancellation | Rating 7.8 8,646 reviews |
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsWhy 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?
Flights from Illinois to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Illinois to Washington, D.C.?
Once you have performed a search for Illinois to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Illinois to Washington, D.C. right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Washington, D.C. from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.