$117 Find Cheap Flights from Reagan Washington National Airport to Illinois - Compare and Save

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Cheap Flights from Reagan-National to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Chicago
Chicago1 stop$226
Moline
Moline1 stop$339
Peoria
Peoria1 stop$349
Chicago
Chicago1 stop$226
Moline
Moline1 stop$339
Peoria
Peoria1 stop$349
Booking Insights

KAYAK's insights & trends for Reagan-National to Illinois flights

Get data-powered insights and trends into flights from Reagan-National to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Reagan-National Airport to Illinois?

Flight prices are below average for this route right now.

Flights to Illinois from Washington, D.C. Reagan-National Airport usually cost between $338 and $513 in December.
The lowest price found in the past 5 days was $226 on Frontier (Dec 5-Dec 7).

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

The cheapest ticket to Illinois from Washington, D.C. Reagan-National Airport found in the last 5 days was to Chicago, at $184 round-trip. The most popular route is from Washington, D.C. Reagan-National Airport (DCA) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $273.

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 $433 on average. Morning departures are around 1% 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 $449.

Can I save money by flying with a layover from Washington, D.C. Reagan-National Airport to Illinois?

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $444 on average.

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

The cheapest month for flights from Washington, D.C. Reagan-National Airport to Illinois is February, when tickets cost $325 (return) on average. On the other hand, the most expensive months are October and March, when the average cost of round-trip tickets is $436 and $403 respectively.

What’s the cheapest day of the week to fly from Reagan Washington National Airport to Illinois?

For Reagan Washington National Airport to Illinois, Saturday is the cheapest day to fly on average and Monday is the most expensive. Flying from Illinois back to Reagan Washington National Airport, the best deals are generally found on Saturday, with Monday being the most expensive.

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

To get a below average price on the flight from Washington, D.C. Reagan-National Airport to Illinois, you should book around 4 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low season

January

Cheapest flight

$117
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Reagan Washington National Airport to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport 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 Reagan Washington National Airport to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Reagan Washington National Airport 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 Reagan Washington National Airport 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 Reagan Washington National Airport 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 Reagan Washington National Airport 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 Reagan Washington National Airport to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Reagan Washington National Airport to the following destinations at these prices or less: Chicago $237 one-way - $386 round-trip

Reviews of the top 3 airlines serving from Reagan-National to Illinois

 
Need help choosing which airline to fly with from Reagan-National 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 4214 reviews
8.1Boarding
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
Airline reviews

Delayed over 3 hours, extremely rough landing on all four flights. Would not recommend

2.0 MediocreKevin, Oct 2026
Read more Southwest reviews

Delayed over 3 hours, extremely rough landing on all four flights. Would not recommend

The entire crew were wonderful but 1 flight attendant stood out with his sense of humor on the microphone. I told him as much as I exited the plane.

Maybe different snack selection. To much sodium in them. I know refrigerators are not available but there has to be healthier items.

It's a shame that SW was previously my preferred carrier until they started imposing all these fees (luggage, seats,etc) and pulling back on other perks. I only flew with them this time due to time frame I needed to be at destination. Wasn't provided gate info during check-in, Gate info wasn't displayed at airport until last minute, gate info didn't match what SW personnel announced at fate. Kind of a mess.

Wasn't expecting this, but, we actually ended up getting assigned to the first row of seats!!!!! The extra legroom came in handy

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

No delays and arrived to destination 30 min early. Staff was super friendly.

Pretty standard flight. We left late, but arrived early. The wifi entertainment is always nice. The free snacks and beverages are simple, but appreciated. I'm tall and the seats are an issue. I can deal with a short flight, but any longer, I have to find another airline where I know beforehand I have extra legroom.

Awesome experience. No in-flight video or meal. Still do not like the boarding process.

On time, good crew, easy flight. Just like the old days!

The couple in front of me were constantly talking over the announcement from the captain and this was annoying me.

Flight attendant incredibly rude. Stuck her finger in my drink and didn’t even have the courtesy to apologize.

Crew was great. Seats are cramped and uncomfortable and I’m a small person.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Never nice, United Express partners always do an amazing job.

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

Boarding area is a mess. Lines not bounded and gate area too small. Food options (on this specific flight) were poor and you couldn’t pick part of it since it was like a mash of chicken and other unrecognisable stuff. Comfort of seats along with child noise made it difficult to get a good sleep. Last, the flight attendant that served my aisle was rude (others seemed fine) towards me and others.

Crew tried to accommodate late arrival due to late departure

I injured myself during my trip. The staff of American Airlines were very compassionate and empathic. They took additional steps to make my experience easier. Thank you!!

There was no ground crew at HSV gate when we arrived. The were busy with another arrival. We had to wait 20 mins for them to arrive and direct the plane to the gate. It took almost 45 mins to get my luggage. The luggage belt had 3 flights bags on it and the other 2 luggage belts were not being used. It looked like there was only 1 crew serving .3 arriving flights.

It was close to its perfect the flake could be took off early, landed early, didn’t have to wait for my daughter stroller luggage came out quick, very efficient, very good flight

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

Delays with no explanation. It could have been handled better.

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

The flight was scheduled to depart DCA at 12:30 pm but was delayed twice on the ground so that we were finally scheduled to depart at around 4:00 pm. Once we boarded, it was announced that takeoff would be delayed again to fix a hydraulic problem which delayed our eventual takeoff until around 5:00 pm. Once we departed, it was a smooth flight back to ORD. We did not get any explanation about what caused the original significant delay. In my experience, this happens frequently with AA.

Our second leg to Jackson WY was unable to land due to weather. We were flown back to Dallas after stopping in SLC. We were given hotel rooms and vouchers. We were told that we would be back on the same plane in the morning. Instead we were given a different flight with different seats. Not a good experience. No one knew what was going on.

Perfect flight. On time departure and early arrival. Smooth flight.

More options for your flight from Reagan-National to Illinois

Complete your trip to Illinois with a hotel stay or car rental