$35 Find Cheap Flights from Illinois to the United States

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Low seasonJanuary
High seasonMay
Cheapest flight$35
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Chicago O'Hare Airport to Newark Liberty Airport

Flights from Illinois to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Illinois to the United States 
MelissaFlew with American AirlinesORD-DTWMar 2025
For this route, American Airlines is an excellent choice as there are many flight options and the gate agents at ORD seem to be very flexible.
Verified travelerFlew with Spirit AirlinesORD-MCOApr 2025
pay for the extra money and get a better flight
Verified travelerFlew with United AirlinesORD-LASMar 2025
If you can select your seats in advance please do
Verified travelerFlew with British AirwaysORD-EWRApr 2025
American Eagle definitely does not provide the same quality of service as American Airlines, even if they are operated by the later.
StephanieFlew with Spirit AirlinesORD-LAXApr 2025
Don’t go to LA and definitely don’t go to LA on Spirit. If I could give negative stars, I would.
Dr. JosephFlew with American AirlinesORD-DFWJan 2025
Be very vigilant about the weather both in Chicago and in Dallas. Adverse weather in either area can affect the trip.
VictorFlew with Spirit AirlinesORD-LGAFeb 2025
Spirit landing at LGA makes life so easy to get to the city!
JanieFlew with SWISSORD-PHXFeb 2025
I think you should prebook food or bring your own food.
Verified travelerFlew with American AirlinesORD-TPADec 2024
I recommend having movies and songs downloaded on your device.
Verified travelerFlew with Spirit AirlinesORD-LASSep 2024
Make sure you get your seats booked at time of booking or at the least when you check in and make sure you check in at the earliest to have preferred seating.
MikeFlew with American AirlinesORD-LAXSep 2024
Arrive early, grab a bottle of soda before getting on the plane and open it in the terminal. If you wait until flying the pressure will decarbonize the drink.
Verified travelerFlew with IberiaORD-SFOOct 2024
Use Alaska Airlines. Great attention to detail. The staff is connected with the passengers and they anticipate what we will need , especially when traveling with wheelchair passengers
MinFlew with United AirlinesORD-RDUNov 2024
United has the most workable transit time and the arrival time (before 10 PM ET).
Verified travelerFlew with Alaska AirlinesORD-PDXSep 2024
Not many amenities at the terminal. I would suggest grabbing anything that catches your eye before you get all the way down. There weren't a lot of Alaska flights out of Chicago, and we were at the extreme end of the terminal.
ZachFlew with American AirlinesPIA-CLTSep 2024
Charlotte is so crowded partially because of the tight banks American operates plus the construction and just the overall small footprint given the larger aircraft. Bring patience while transiting clt
Verified travelerFlew with British AirwaysORD-CIDSep 2024
Easy hop but we sure went to the most remote o’hare gate I think, prepare to walk a mile!
mauriceFlew with IberiaORD-JFKSep 2024
You should arrive early, take a lighht snack and be prepared for delays.
HeatherFlew with LufthansaORD-MKEAug 2024
Make sure there's enough time between connections to go through customs and recheck your luggage. They will not let you proceed so you can't even try to run and catch the flight if you want to.
IngridFlew with Alaska AirlinesORD-BOSAug 2024
Take a direct flight from Seattle to Boston and do not have a stop over in Chicago
SarahFlew with SouthwestMDW-AUSAug 2024
Midway airport is pleasant and not chaotic at all. Breezed through customs. Very good experience.
MarcFlew with American AirlinesORD-LEXJul 2024
American can be counted on providing consistent performance flying between Chicago and Lexington.
FreddyFlew with SouthwestMDW-LGAJul 2024
On a stormy day, be prepare for delays.
KashFlew with American AirlinesORD-DFWJun 2024
None. You can’t deal with airlines like AA anymore. Just be glad if they get you from point A to B in time. More than you can ask for these days, with the sad state of affairs with US- based airlines these days
Verified travelerFlew with Alaska AirlinesORD-SEAJun 2024
It was my first time flying with Alaska and I was delayed 3.5 hours. Might reconsider using Alaska in the future.
JonathanFlew with British AirwaysORD-PHLAug 2024
Delta is good, I would avoid American and British Airways
PaulFlew with Alaska AirlinesORD-SEAApr 2024
The flight is long, at over four hours. I would try to get a window or aisle seat to be more comfortable. I would check with other airlines that allow you to choose your seat even if you are in the economy section. I would bring your own food on the plane as the service was sometimes sketchy.
EllenFlew with United AirlinesORD-DSMMay 2024
The flight is short enough that full beverage and snack service is limited or not offered at all. On this flight, we were offered orange juice or water. It makes sense that they can't do the full service, and doesn't bother me, but it's something to be aware of.
AlexanderFlew with Spirit AirlinesORD-LGAMay 2024
Know your connection options — specially when LaGuardia Airport (LGA) only has buses going to/from the airport to the rest of the city. Luckily, the one to the subway station (Q70) is free-of-charge to ride on!
Verified travelerFlew with United AirlinesORD-PHXApr 2024
Use the find my gate feature on the flights phone app if available as the airport is a bit confusing
Verified travelerFlew with Alaska AirlinesORD-SEAApr 2024
If you miss your flight ask any alaska agent to how and where to rebook the flight.
AyannaFlew with Spirit AirlinesORD-TPAMay 2024
Fly out of Midway airport instead of O'Hare because its smaller and easier to manage.
MusarratFlew with SouthwestMDW-JAXMay 2024
Southwest is best airline and Midway is also good airport in Chicago
JenFlew with Allegiant AirPIA-PGDMar 2024
Love flying out of small airports close to start/end destinations!
ANAFlew with FrontierMDW-PHXMar 2024
More organization and more staff, there was a lot from diferentes cities coming at the airport, so it was a mess because people don’t understand. Or don’t want to understand the instrucción of wait in their seats…. So more staff could be helpful..
Verified travelerFlew with Spirit AirlinesORD-ATLApr 2024
Some areas of the airport were cold, others were warm. We had to seat in the warm area which was far from our gate. Not sure why A/C is not properly adjusted at O'Hare Airport
UzomaFlew with American AirlinesORD-DCAJan 2024
ORD and DCA are nice airports with plenty of space. ORD is always busy so allow ample time to drive there, drop your bag, and go through security if you don't have TSA pre check.
LaurenFlew with Spirit AirlinesORD-MCOFeb 2024
If you can get by with a personal item, spirit has the best prices often at the best times to fly chicago to orlando for a weekend
Dr. JosephFlew with American AirlinesORD-CLTJan 2024
Be prepared to walk long distances in Charlotte. Make sure your layover time is sufficient to transition between arrival and departure gates.
BartoszFlew with Scandinavian AirlinesORD-IADFeb 2024
United or American are the best airlines to fly to DC
SeanFlew with Alaska AirlinesORD-SEAJan 2024
Signage for hotel shuttles at O’Hare is poor. Restrooms were surprisingly clean. In winter especially, there are going to be delays.
GerryFlew with United AirlinesORD-LAXJan 2024
The one unfortunate item with this flight, because the flight was full, everyone in group 3 and more had to tag their carry on luggage and have it checked. I my opinion, there was lots of available space on the plane for pack packs, coats etc that could all have been put under the seat. We cannot give up our carry on because of the medical needs

FAQs for booking flights from Illinois to the United States

  • How does KAYAK find such low prices on flights from Illinois to the United States?

    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 Illinois to the United States.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to the United States 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 Illinois to the United States?

    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 Illinois to the United States 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 Illinois to the United States?

    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 Illinois to the United States 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 the United States?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United States is Orlando Airport (MCO), with an average flight price of $130.

  • What is the cheapest day to fly to the United States?

    Based on KAYAK data, the cheapest day to fly to the United States is Thursday where round-trip tickets can be as cheap as $249. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $350 on average.

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally at night, when round-trip flights cost $254 on average. Morning departures are around 3% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $363.

  • What is the cheapest flight to the United States?

    The cheapest ticket to the United States from Illinois found in the last 72 hours was to Las Vegas, at $56 round-trip. The most popular route is Bloomington (BMI) to Atlanta (ATL) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $83.

  • What is the cheapest month to fly from Illinois to the United States?

    The cheapest month for flights from Illinois to the United States is September, when tickets cost $229 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $362 and $348 respectively.

  • How far in advance should I book a flight from Illinois to the United States?

    To get a below average price on the flight from Illinois to the United States, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

  • How long is the flight to the United States?

    An average nonstop flight from Illinois to the United States takes 3h 08m, covering a distance of 1142 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Nashville (BNA) with an average flight time of 1h 32m.

  • What are the most popular destinations in the United States?

    Based on KAYAK flight searches, the most popular destination is New York (19% of total searches to the United States). The next most popular destinations are Dallas (10%) and Las Vegas (6%). Searches for flights to Seattle (5%), to Washington, D.C. (5%) and to Denver (4%) are also popular.

Top 4 airlines serving from Illinois to the United States

Need help choosing which airline to fly with from Illinois to the United States? 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.
7.4
United AirlinesOverall score based on 8696 reviews
7.7Boarding
7.3Comfort
6.6Food
7.1Entertainment
8.1Crew
Airline reviews

A bit rush for transit. Food and entertainment are not available

8.0 ExcellentAnonymous, Apr 2025ORD - SFO
Read more United Airlines reviews

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Our seats were all the way in back of the plane,

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

The flight attendants in First Class were mediocre at best. They did not take our tray away until we were about to land and only did so when I press the call button. The United person at the United Club was asked to get us our boarding pass since we missed the flight due in Chicago. She argued that we did not have seats on the flight given to us in Moline. Furthermore, she was adamant that we did not have a First Class ticket. After I spent much time with her trying to show we were correct, she reluctantly agreed. She was probably the most incompetent ticketing person I have ever met and I have traveled 3 million miles on United plus many additional miles with other carriers. United has definitely deteriorated in more than on way.

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

I had a TERRIBLE experience with the AA crew. I believe it was disability-related. It’s unlikely I will fly AA again.

My luggage is missing and contour is doing a terrible service helping finding it. Unbelievable and the worst experience ever. I would love get my money back.

Flight was cancelled, but they got him on an earlier delayed rescheduled one. Arrived Chicago 2 hours later than expected but long layover so it worked.

Crew very helpful, weather made the flight less than optimal.

Flight was fine. I just forgot how smaller planes have more dips and seats in high winds.

It’s the only flight connecting Marion to Chicago, I do appreciate that it was available!

The flight was delayed and then less than 30 mins before boarding they cancelled the flight when clearly they had to have known earlier that they were going to have to cancel. There was only one person there available to talk to and all he could do was tell us to call reservations our self. Due to high call volume I waited 2 hours to even get rebooked on a flight to a different city where I would still have to drive 1 hr to my destination, only option for me. While waiting to talk to reservations people were getting emails with new flight info and the flights were days out and sone even a week out. . I did not get compensated in anyway after having spent all day at the airpot, not even a food voucher. Very disappointed, terrible experience.

Information regarding the delayed flight could have been better, and the Contour airlines app needs some serious updates. But overall, the crew was great and the flight was uneventful.

The boarding procedure is as easy and the crew very friendly.

This is a great airline for what it is. You get 1 checked bag included per passenger and the space per seat is incredible. It’s an E135 aircraft that is configured to seat 50 people but they have removed 20 seats and only seat 30 so you have a ton of legroom. They are doing things right and have a great product for what it is. It’s not going to knock your socks off in experience overall but the plane, although dates, was nice and clean and the crew was great. The flights were on time and super efficient. Will travel them again. I am a frequent traveler on all the larger airlines and this was just as good as any regional carrier, if not better. I expect big things out of Contour in the years to come.

Not waiting on the tarmac for an hour and 20 minutes

We had a wonderful flight due to the care of our experienced pilot and copilot and the magnificent air views from our comfortable seats. What excitement to be in such a small plane with such magnificent around us.

Multiple time changes, then we left earlier than we were told.

Communication could be better but the staff and crew were over the top friendly and helpful, The flight itself was smooth.

flight was cancelled literally at 10pm the night before an early morning flight with hardly any time to reschedule. Will never book with kayak again.

My flight was cancelled 12 hours before takeoff. I was not able to reschedule another flight to make connections and had to cancel the entire trip. The ticket that was supposed to replace the cancelled flight had no boarding pass and I was unable to get one at the airport so I was denied access to the rescheduled flight. I was refunded but I missed my daughter's birthday.

I had a family emergency and couldn’t make the flight, and they wouldn’t let me cancel/refund it (a *month* ahead of time), were especially difficult with me on the phone, and wouldn’t let me even so much as reschedule the flight or get credit.

Flight was cancelled, communication was poor and should have canceled flight much earlier.

Flight was cancelled twice. Moved four more times. Probably the least timely and poorly run airline I have ever experienced in my life. I have traveled hundreds of times to dozens of countries and this one takes the cake.

Excellent crew, good flight. Flight was delayed about 1 1/2 hours though.

Pros: "The ground crew and flight crew were great."
Cons: "Would have appreciated easier steps (lower risers) for boarding. Arthritic knee makes it hard for me to manage the high risers between steps. Also having armrests would have made the flight more comfortable."

Book cheap flights from Illinois to the United States

Recent round-trip flight deals

5/14Wed
nonstopSpirit Airlines
2h 21mORD-EWR
5/21Wed
nonstopSpirit Airlines
2h 32mEWR-ORD
$75
5/10Sat
nonstopSpirit Airlines
2h 45mORD-MCO
5/17Sat
nonstopSpirit Airlines
3h 04mMCO-ORD
$75
6/1Sun
nonstopFrontier
4h 14mORD-LAS
6/6Fri
nonstopFrontier
3h 56mLAS-ORD
$78
5/10Sat
nonstopFrontier
3h 03mORD-MCO
5/17Sat
nonstopFrontier
3h 09mMCO-ORD
$82
5/14Wed
nonstopUnited Airlines
2h 11mORD-LGA
5/21Wed
nonstopUnited Airlines
2h 41mLGA-ORD
$137
5/14Wed
nonstopAmerican Airlines
2h 16mORD-JFK
5/21Wed
nonstopAmerican Airlines
3h 09mJFK-ORD
$138
5/13Tue
nonstopAmerican Airlines
2h 16mORD-JFK
5/25Sun
nonstopAmerican Airlines
3h 09mJFK-ORD
$147
5/11Sun
nonstopUnited Airlines
2h 11mORD-LGA
5/14Wed
nonstopUnited Airlines
2h 41mLGA-ORD
$158
6/5Thu
1 stopContour
3h 55mORD-DFW
6/9Mon
1 stopContour
3h 50mDFW-ORD
$189
5/15Thu
1 stopContour
3h 55mORD-DFW
5/21Wed
1 stopContour
3h 50mDFW-ORD
$206

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Recent one-way flight deals

5/13Tue
nonstopSpirit Airlines
2h 21mORD-EWR
$35
5/28Wed
nonstopSpirit Airlines
2h 21mORD-EWR
$37
5/30Fri
nonstopFrontier
4h 22mORD-LAS
$37
5/29Thu
nonstopFrontier
4h 06mORD-LAS
$38
5/20Tue
nonstopAmerican Airlines
2h 11mORD-LGA
$70
5/21Wed
nonstopAmerican Airlines
2h 25mORD-DFW
$74
6/10Tue
nonstopUnited Airlines
2h 48mORD-DEN
$76
5/15Thu
1 stopContour
3h 55mORD-DFW
$83
5/8Thu
1 stopContour
3h 55mORD-DFW
$84
6/2Mon
nonstopUnited Airlines
2h 50mORD-DEN
$85

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Last minute flights from Illinois to the United States

Last minute flight, train and bus deals

5/5Mon
multi-stopSpirit Airlines
11h 30mORD-MCO
5/10Sat
nonstopSpirit Airlines
3h 04mMCO-ORD
$112
5/5Mon
multi-stopSpirit Airlines
11h 30mORD-MCO
5/10Sat
nonstopSpirit Airlines
3h 04mMCO-ORD
$113
5/5Mon
multi-stopSpirit Airlines
11h 30mORD-MCO
5/8Thu
nonstopSpirit Airlines
3h 04mMCO-ORD
$126
5/5Mon
nonstop
3h 03mORD-MCO
5/10Sat
nonstop
3h 04mMCO-ORD
$128
5/5Mon
nonstop
3h 03mORD-MCO
5/8Thu
nonstop
3h 04mMCO-ORD
$140
5/5Mon
nonstopUnited Airlines
2h 15mORD-LGA
5/19Mon
nonstopUnited Airlines
2h 41mLGA-ORD
$174
5/5Mon
multi-stopUnited Airlines
9h 00mORD-SEA
5/12Mon
nonstopUnited Airlines
4h 01mSEA-ORD
$185
5/5Mon
multi-stopAmerican Airlines
4h 43mORD-LGA
5/19Mon
nonstopAmerican Airlines
2h 33mLGA-ORD
$226
5/5Mon
multi-stopAmerican Airlines
4h 09mORD-JFK
5/19Mon
nonstopAmerican Airlines
3h 09mJFK-ORD
$246
5/2Fri
multi-stopContour
3h 55mORD-DFW
5/7Wed
multi-stopContour
3h 50mDFW-ORD
$467

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Everything you need to know for your flight to the United States

Cabin class types available on flights to Illinois

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