$78 Find Cheap Flights from District of Columbia to Illinois

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Low seasonJanuary
High seasonAugust
Cheapest flight$78
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Reagan Washington National Airport to Chicago O'Hare Airport

FAQs for booking flights from District of Columbia to Illinois

  • How does KAYAK find such low prices on flights from District of Columbia to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from District of Columbia to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from District of Columbia to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from District of Columbia to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from District of Columbia to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Illinois?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Illinois is Chicago Midway Airport (MDW), with an average flight price of $181.

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Tuesday where round-trip tickets can be as cheap as $398. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $510 on average.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $299 on average. Morning departures are around 14% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is $509.

  • What is the cheapest flight to Illinois?

    The cheapest ticket to Illinois from District of Columbia found in the last 72 hours was to Chicago Midway Airport, at $101 round-trip. The most popular route is Baltimore (BWI) to Chicago Midway Airport (MDW) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $101.

  • What is the cheapest month to fly from District of Columbia to Illinois?

    The cheapest month for flights from District of Columbia to Illinois is January, when tickets cost $232 (return) on average. On the other hand, the most expensive months are March and February, when the average cost of round-trip tickets is $338 and $320 respectively.

  • How far in advance should I book a flight from District of Columbia to Illinois?

    To get a below average price on the flight from District of Columbia to Illinois, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

  • How long is the flight to Illinois?

    An average nonstop flight from District of Columbia to Illinois takes 8h 23m, covering a distance of 647 miles. The shortest route is Washington, D.C. Reagan-National Airport (DCA) to Chicago Midway Airport (MDW) with an average flight time of 1h 55m.

  • What are the most popular destinations in Illinois?

    Based on KAYAK flight searches, the most popular destination is Chicago (86% of total searches to Illinois). The next most popular destinations are St. Louis (11%) and Moline (2%). Searches for flights to Peoria (1%), to Bloomington (0%) and to Evansville (0%) are also popular.

Reviews of the top 5 airlines serving from District of Columbia to Illinois

 
Need help choosing which airline to fly with from District of Columbia to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4278 reviews
8.6Crew
7.6Entertainment
7.1Food
8.2Boarding
8.0Comfort
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Everything was on time, we arrived early, everything worked well.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

No way to get boarding pass on my phone. In order to print the bag ticket a boarding pass is needed. Asked the agent to print me one, they said they typically do not due this as its so much work. I showed the email confirmation and I asked how i could do it my self the agent replied he did not know as there was no link. The flight was delayed due to an attendant forgetting to come to work. On the flight no drinks were offered only for purchase meals.

No way to get boarding pass on my phone. In order to print the bag ticket a boarding pass is needed. Asked the agent to print me one, they said they typically do not due this as its so much work. I showed the email confirmation and I asked how i could do it my self the agent replied he did not know as there was no link. On the flight no drinks were offered only for purchase meals.

Since you have to pay for overhead bags then they shouldn't be running out of space and asking individuals who paid to remove stuff from the overhead

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

Book with frontier airlines with the mentality that they'll cancel your flight, kick you off and lose your luggage. Anything besides that is a win. Compare prices with other airlines (to include luggage) and if frontier is still worth it, book it but know all of their policies.

You get what you pay for nothing essentially but a hard uncomfortable seat that doesn’t recline and kids screaming all around you and chaotic boarding and limited check bag weight allowance when compared to other airlines

I never got to experience the flight because they delayed my first flight and I missed this one. Then Frontier didn't want to help me rebook a flight to get me to my final destination.

The Boarding process in Denver was chaotic, and since the line was so long, we were lined up very far from the gate. If there were any announcements from the gate staff, we didn't hear them. The flight attendants were spectacular. The only negative part of the flight was sitting by a 2 1/2 year old who was unruly and unfortunately had parents that matched his behaviors. Also, the restaurants in Denver on the E concourse, they didn't have food (passengers could only order 1 item on the entire menu) or the restaurants had 12-14 people waiting for orders to be prepared and another 6 people waiting to order. If you have a layover in Denver and need to grab food, be prepared to visit the shops with pre-packaged sandwiches, or you can visit another concourse but it may take a while to transit throughout the airport.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Although an hour and a half early was told by staff at check in they had overbooked and could not check us in for the flight.

Book cheap flights from District of Columbia to Illinois

Recent round-trip flight deals

8/6Wed
nonstopAmerican Airlines
2h 21mDCA-ORD
8/13Wed
nonstopAmerican Airlines
1h 47mORD-DCA
$157
8/7Thu
nonstopUnited Airlines
2h 14mIAD-ORD
8/11Mon
nonstopUnited Airlines
1h 59mORD-IAD
$157
8/7Thu
nonstopSouthwest
1h 55mDCA-MDW
8/11Mon
nonstopSouthwest
1h 55mMDW-DCA
$157
7/9Wed
1 stopFrontier
5h 30mIAD-MDW
7/15Tue
1 stopFrontier
11h 33mMDW-IAD
$160
7/1Tue
1 stopFrontier
5h 31mIAD-MDW
7/8Tue
1 stopFrontier
11h 33mMDW-IAD
$161
8/7Thu
1 stopSouthwest
4h 45mDCA-MDW
8/11Mon
nonstopSouthwest
1h 50mMDW-DCA
$167
8/28Thu
nonstopUnited Airlines
2h 17mDCA-ORD
8/31Sun
nonstopUnited Airlines
1h 59mORD-DCA
$168
7/1Tue
nonstopAmerican Airlines
2h 24mDCA-ORD
7/1Tue
nonstopAmerican Airlines
2h 11mORD-DCA
$174
8/6Wed
1 stopDelta
5h 11mDCA-ORD
8/11Mon
1 stopDelta
4h 59mORD-DCA
$197
8/12Tue
1 stopDelta
5h 20mIAD-ORD
8/13Wed
1 stopDelta
3h 17mORD-IAD
$197

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Recent one-way flight deals

9/17Wed
nonstopAmerican Airlines
2h 20mDCA-ORD
$78
9/15Mon
nonstopUnited Airlines
2h 13mDCA-ORD
$79
8/4Mon
nonstopSouthwest
1h 55mDCA-MDW
$79
8/6Wed
nonstopUnited Airlines
2h 14mIAD-ORD
$79
6/24Tue
1 stopFrontier
5h 31mIAD-MDW
$80
6/25Wed
1 stopFrontier
5h 31mIAD-MDW
$85
9/17Wed
1 stopSouthwest
7h 10mDCA-ORD
$89
7/1Tue
nonstopAmerican Airlines
2h 16mDCA-STL
$90
8/27Wed
1 stopDelta
6h 26mDCA-ORD
$99
9/17Wed
1 stopDelta
7h 08mIAD-ORD
$99

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Last minute flights from District of Columbia to Illinois

Last minute flight, train and bus deals

6/18Wed
multi-stopFrontier
5h 31mIAD-MDW
6/21Sat
multi-stopFrontier
7h 56mMDW-IAD
$160
6/18Wed
multi-stopFrontier
5h 31mIAD-MDW
6/21Sat
multi-stopFrontier
7h 56mMDW-IAD
$161
6/21Sat
multi-stopAmerican Airlines
4h 10mDCA-PIA
7/26Sat
multi-stopAmerican Airlines
4h 33mPIA-DCA
$279
6/21Sat
multi-stopAmerican Airlines
6h 30mDCA-MLI
7/26Sat
multi-stopAmerican Airlines
4h 20mMLI-DCA
$279
6/21Sat
multi-stopDelta
5h 37mDCA-MLI
7/23Wed
multi-stopDelta
5h 16mMLI-DCA
$294
6/21Sat
multi-stopDelta
6h 03mIAD-MLI
7/25Fri
multi-stopDelta
6h 08mMLI-IAD
$319
6/22Sun
multi-stopUnited Airlines
5h 48mDCA-PIA
7/26Sat
multi-stopUnited Airlines
4h 17mPIA-DCA
$349
6/22Sun
multi-stopUnited Airlines
4h 55mDCA-MLI
7/23Wed
multi-stopUnited Airlines
5h 57mMLI-DCA
$349
6/20Fri
nonstopSouthwest
2h 00mDCA-MDW
6/30Mon
nonstopSouthwest
1h 45mMDW-DCA
$484
6/20Fri
multi-stopSouthwest
3h 15mDCA-MDW
6/30Mon
nonstopSouthwest
1h 50mMDW-DCA
$490

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Everything you need to know for your flight to Illinois

Cabin class types available on flights to District of Columbia

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