$451 Find Cheap Flights from Singapore to Illinois

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois, as well as popular online travel agencies
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Useful Info

What is the cheapest month to fly from Singapore to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Singapore to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Singapore to Illinois is February, when tickets cost $975 (return) on average. On the other hand, the most expensive months are January and May, when the average cost of round-trip tickets is $1,759 and $1,751 respectively.

How far in advance should I book a flight from Singapore to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Singapore to Illinois, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.


Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$451
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly with an average 3% increase in price.
Flight from Singapore to Chicago

FAQs for booking flights from Singapore to Illinois

  • How does KAYAK find such low prices on flights from Singapore 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 Singapore to Illinois.

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

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

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Monday where round-trip tickets can be as cheap as $1,116. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are $1,495 on average.

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

    The cheapest time of day to fly to Illinois is generally in the afternoon, when round-trip flights cost $1,166 on average. The most expensive time of day to fly to Illinois is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,286.

Reviews of the top 3 airlines serving from Singapore to Illinois

 
See real verified KAYAK customer reviews for airlines flying to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Singapore to Illinois. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Singapore 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.
8.4
EVA AirOverall score based on 1215 reviews
8.4Boarding
8.1Food
8.6Crew
8.3Comfort
8.0Entertainment
Airline reviews

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) was kept clean and replenished

10.0 ExcellentDale, May 2025CRK - TPE
Read more EVA Air reviews

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) was kept clean and replenished

I have never heard of EVA air before but I am so happy my wife and I were able to flight on their planes twice. Everything on these flights just felt better than their competitors. As someone with longer legs any bit of extra leg spaces is appreciated. The different options for food and drinks were also a plus. They were extra careful to make sure my wife's eating restrictions were taken care for. They had a before take off and landing announcements on the built in tablets for each seat and it gave out information that was very helpful. Such as what and how to declare your items in the specific country you landed in, any odd items that may be illegal to bring it (and even the reasoning why) and any other information you might need to make your post flight experience better. Oh and the seats were more comfortable, had more ability to lean and the headrest was much better for flight sleeping. The only downside was there were "forced" ads on the tablet at take off for maybe 5-10 minutes but honestly, this flight was the cheapest option and had all the benefits listed above that is such an easy trade off. Im keeping an eye out for EVA air going forward.

Sub sandwhich for a snack through mid flight and giving a bottle water was a good idea

seats are pitched well. you don't feel too tight.

For the price, it was better than other airlines; quality of food and service was very good.

Great but I am not sure why I was placed in zone 4 for boarding despite being an Infinity Member??? Can you explain online. Thanks

friendly and professional cabin staff... seems cold and a bit aloof...

delayed and the cabin crew was like trainees.. a bit careless and not so pleasing to their job

Except for crying babies all was ok although the movie selection wasn't the best.

The staff was marvelous. The entertainment options were terrible, old or 2nd rate movies. I was unable to entertain myself for 18 hours-it made it seem even longer. Note: I thought about upgrading but your information about what was included was unclear. Are the seats bigger? Are there current moves? What kind of food do you get? Would the upgrade compare to Delta? Just saying the upgrade is better didn’t convince me and I regret not flying Delta.

The only problem I had was not being able to download my boarding passes prior to arriving at the airport. Everything else was perfect.

Better. I took an aisle seat this time. Although the overheard compartment above the seat ahead of me kept opening up during flight.

They ran out of food and were offering random food to passengers.

Short staffs, I ask stewardess to bring me cognac twice during dinner but they didn't bring it!

The food and service was great. You have to pay a lot for in flight Internet though which is lame.

Flight was delayed at the last minute for six hours. Instead of delaying it to a normal hour, they moved it to 10 pm to essentially make it a redeye. There was no compensation or benefit offered for this inconvenience. Once on the plane, Inpaid for WiFi twice with both times it not working because of a “weak WiFi signal”, according to the flight attendants. They also chose the farther possible gates in both airports from the entrance/exit, even though they were one of the few active flights left so late in the evening. Overall it was pretty horrible.

Special request meals are really below average. Vegetarian options are very limited if you didn't prebook.

I've stomach problems after 2 hours of flight, Iris, the flight purser not only did her best to make me feel comfortable, she went above and beyond providing pain relievers medicines and ointment. She look and found a doctor passenger on the flight to provide advise. She even report on ground staffs about my condition and provide wheelchair upon arrival. Kudos to her and Cathay Pacific!

Very noisy and careless crew on this overnight flight. They should understand customers want to sleep

The flight was delayed for 30 mins. The overall experience was good.

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!

All flight attendants could benefit by taking an international flight on Qantas Airline. Qantas attendants are much more hospitable in every way. Much superior than and attendants on any US airline.

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.

So far so good but food and entertainment are not available for this flight

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

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

Book cheap flights from Singapore to Illinois

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Illinois found on KAYAK in the last 72 hours.
10/27Mon
2 stopsAir Canada
30h 41mSIN-ORD
11/13Thu
1 stopAir Canada
26h 15mORD-SIN
$668
10/27Mon
2 stopsAir Canada
32h 38mSIN-ORD
11/13Thu
2 stopsAir Canada
32h 55mORD-SIN
$669
8/12Tue
1 stopJapan Airlines
20h 55mSIN-ORD
8/31Sun
2 stopsJapan Airlines
42h 25mORD-SIN
$686
8/27Wed
1 stopJapan Airlines
20h 20mSIN-ORD
1/7Wed
2 stopsJapan Airlines
27h 32mORD-SIN
$705
10/26Sun
2 stops
27h 11mSIN-ORD
11/13Thu
1 stop
26h 15mORD-SIN
$712
10/7Tue
2 stops
29h 22mSIN-ORD
10/12Sun
1 stop
43h 19mORD-SIN
$752
10/8Wed
1 stopANA
23h 30mSIN-ORD
10/12Sun
1 stopANA
23h 55mORD-SIN
$816
10/27Mon
1 stopANA
34h 35mSIN-ORD
11/13Thu
1 stopANA
24h 30mORD-SIN
$826
7/16Wed
2 stopsAmerican Airlines
34h 21mSIN-MLI
7/20Sun
2 stopsAmerican Airlines
29h 20mMLI-SIN
$1,209
9/18Thu
2 stopsAmerican Airlines
23h 49mSIN-SPI
9/23Tue
2 stopsAmerican Airlines
39h 16mSPI-SIN
$1,220

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Illinois found on KAYAK in the last 72 hours.
11/30Sun
2 stopsAir Canada
31h 41mSIN-ORD
$451
10/7Tue
2 stopsAir Canada
27h 57mSIN-ORD
$459
10/7Tue
2 stopsAir Canada
26h 15mSIN-ORD
$460
10/8Wed
2 stopsAir Canada
26h 49mSIN-ORD
$463
10/7Tue
1 stopJapan Airlines
20h 10mSIN-ORD
$482
7/25Fri
1 stopUnited Airlines
36h 31mSIN-ORD
$607
7/18Fri
1 stopUnited Airlines
34h 30mSIN-ORD
$608
10/7Tue
1 stopCathay Pacific
25h 35mSIN-ORD
$674
10/7Tue
1 stopCathay Pacific
25h 35mSIN-ORD
$686
7/28Mon
2 stopsEVA Air
40h 08mSIN-ORD
$734

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Last minute flights to Illinois

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Illinois that are departing in the next 10 days.
7/5Sat
multi-stopANA
21h 40mSIN-ORD
7/13Sun
multi-stopANA
34h 30mORD-SIN
$825
7/6Sun
multi-stopANA
21h 40mSIN-ORD
7/20Sun
multi-stopANA
23h 55mORD-SIN
$836
7/6Sun
multi-stopAir Canada
34h 19mSIN-ORD
7/12Sat
multi-stopAir Canada
46h 07mORD-SIN
$953
7/4Fri
multi-stopUnited Airlines
25h 33mSIN-ORD
7/12Sat
multi-stopUnited Airlines
33h 37mORD-SIN
$968
7/4Fri
multi-stopAir Canada
38h 44mSIN-ORD
7/12Sat
multi-stopAir Canada
46h 04mORD-SIN
$998
7/6Sun
multi-stopEVA Air
21h 00mSIN-ORD
7/11Fri
multi-stopEVA Air
24h 20mORD-SIN
$1,064
7/4Fri
multi-stopEVA Air
21h 00mSIN-ORD
7/11Fri
multi-stopEVA Air
22h 30mORD-SIN
$1,067
7/5Sat
multi-stopUnited Airlines
30h 46mSIN-ORD
7/13Sun
multi-stopUnited Airlines
28h 35mORD-SIN
$1,103
7/4Fri
multi-stopJapan Airlines
27h 05mSIN-ORD
7/12Sat
multi-stopJapan Airlines
27h 00mORD-SIN
$1,115
7/4Fri
multi-stopJapan Airlines
27h 05mSIN-ORD
7/13Sun
multi-stopJapan Airlines
43h 40mORD-SIN
$1,120

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Everything you need to know for your flight to Illinois

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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