$529 Find Cheap Flights from Singapore to Illinois

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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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KAYAK's insights & trends for flights to Illinois

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

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 $1,575 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$529
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly with an average 6% 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 Sunday where round-trip tickets can be as cheap as $1,190. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,639 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.

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 1192 reviews
8.6Crew
8.3Comfort
8.1Food
8.4Boarding
8.0Entertainment
Airline reviews

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.

10.0 ExcellentAnonymous, May 2025TPE - SEA
Read more EVA Air reviews

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.

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. 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.

Movie selection was not as good as recent flights I've taken (EVA and other airlines).

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

Great service. Was there a food option? I was given food (I could have ordered ahead of time?) but had no choice. I like choice.

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

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.

Highly impressive. On time. Smooth and fast boarding and disembarkment. Really great service

It was okay overall but the food was very, very bad.

When comes to Taiwan airlines China airlines is the best rest are pure trash

flight delayed 45 mins - missed connection - 1 hr layover became 8 hr layover waiting for next flight -

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.

Very modern plane. Good seat spacing. Meals were good. Screens had tons of movies and worked

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.

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.
10/26Sun
1 stopKorean Air
21h 00mSIN-ORD
11/13Thu
1 stopKorean Air
43h 20mORD-SIN
$927
5/26Mon
1 stopKorean Air
21h 30mSIN-ORD
7/15Tue
1 stopKorean Air
22h 10mORD-SIN
$938
10/26Sun
2 stops
40h 04mSIN-ORD
11/13Thu
2 stops
29h 55mORD-SIN
$954
6/24Tue
1 stopUnited Airlines
27h 28mSIN-ORD
7/23Wed
1 stopUnited Airlines
25h 21mORD-SIN
$958
6/9Mon
1 stopCathay Pacific
31h 20mSIN-ORD
6/22Sun
1 stopCathay Pacific
24h 30mORD-SIN
$983
6/10Tue
1 stopCathay Pacific
25h 35mSIN-ORD
6/30Mon
1 stopCathay Pacific
24h 30mORD-SIN
$984
6/24Tue
2 stops
27h 30mSIN-ORD
7/23Wed
2 stops
26h 18mORD-SIN
$1,027
6/29Sun
1 stopUnited Airlines
41h 19mSIN-ORD
7/6Sun
1 stopUnited Airlines
31h 45mORD-SIN
$1,044
6/24Tue
1 stopEVA Air
20h 50mSIN-ORD
7/22Tue
1 stopEVA Air
24h 20mORD-SIN
$1,049
5/27Tue
1 stopEVA Air
20h 50mSIN-ORD
7/14Mon
1 stopEVA Air
22h 30mORD-SIN
$1,051

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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.
7/10Thu
2 stopsIndiGo
35h 10mSIN-ORD
$529
7/1Tue
2 stopsIndiGo
35h 10mSIN-ORD
$534
7/9Wed
2 stops
42h 00mSIN-MDW
$574
8/11Mon
3 stops
55h 32mSIN-ORD
$581
6/5Thu
1 stopCathay Pacific
31h 20mSIN-ORD
$688
6/2Mon
1 stopUnited Airlines
24h 26mSIN-ORD
$694
6/5Thu
1 stopUnited Airlines
39h 33mSIN-ORD
$696
6/7Sat
2 stopsEVA Air
27h 23mSIN-ORD
$841
6/4Wed
1 stopCathay Pacific
33h 25mSIN-ORD
$927
6/6Fri
1 stopEVA Air
20h 50mSIN-ORD
$1,364

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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.
5/18Sun
multi-stopDelta
35h 49mSIN-ORD
7/15Tue
multi-stopDelta
32h 20mORD-SIN
$964
5/19Mon
multi-stopCathay Pacific
25h 35mSIN-ORD
5/27Tue
multi-stopCathay Pacific
24h 30mORD-SIN
$983
5/20Tue
multi-stopCathay Pacific
35h 20mSIN-ORD
5/27Tue
multi-stopCathay Pacific
24h 30mORD-SIN
$998
5/16Fri
multi-stopUnited Airlines
22h 50mSIN-ORD
7/15Tue
multi-stopUnited Airlines
25h 21mORD-SIN
$1,067
5/20Tue
multi-stopEVA Air
42h 49mSIN-ORD
5/27Tue
multi-stopEVA Air
27h 09mORD-SIN
$1,068
5/20Tue
multi-stopEVA Air
20h 50mSIN-ORD
5/27Tue
multi-stopEVA Air
30h 52mORD-SIN
$1,070
5/19Mon
multi-stopUnited Airlines
22h 05mSIN-ORD
7/15Tue
multi-stopUnited Airlines
26h 35mORD-SIN
$1,073
5/18Sun
multi-stopTurkish Airlines
36h 25mSIN-ORD
5/28Wed
multi-stopTurkish Airlines
23h 55mORD-SIN
$1,151
5/20Tue
multi-stop
22h 57mSIN-ORD
5/28Wed
multi-stop
47h 53mORD-SIN
$1,185
5/20Tue
multi-stop
27h 51mSIN-ORD
5/29Thu
multi-stop
50h 20mORD-SIN
$1,197

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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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