$538 Find Cheap Flights from Singapore to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Singapore to Illinois departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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 in flight searches from Singapore to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Illinois, as well as popular online travel agencies
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Cheap Flights from Singapore to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Peoria
Peoria2 stops$1,200
Springfield
Springfield2 stops$1,857
Peoria
Peoria2 stops$1,200
Springfield
Springfield2 stops$1,857

Book Cheap Singapore to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Singapore to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Singapore to Illinois

Wed, Jan 21 - Wed, Jan 28
Air Canada Logo
6:35 am - 2:41 pmSIN-ORD
46h 06m2 stops
Air Canada Logo
3:35 pm - 7:00 amORD-SIN
25h 25m1 stop
$853Air Canada
Find Deal
Wed, Jan 21 - Wed, Jan 28
Korean Air Logo
10:30 pm - 8:40 amSIN-ORD
24h 10m1 stop
Korean Air Logo
11:25 am - 8:25 pmORD-SIN
43h 00m1 stop
$919Korean Air
Find Deal
Mon, May 11 - Tue, May 12
United Airlines Logo
8:40 pm - 6:38 pmSIN-ORD
34h 58m1 stop
United Airlines Logo
9:39 pm - 6:25 pmORD-SIN
31h 46m1 stop
$925United Airlines
Find Deal
Wed, Jan 28 - Sun, Feb 1
United Airlines Logo
10:10 am - 8:05 pmSIN-ORD
23h 55m1 stop
United Airlines Logo
4:16 pm - 8:00 amORD-SIN
25h 44m1 stop
$928United Airlines
Find Deal
Tue, Jan 20 - Wed, Jan 28
Delta Logo
1:35 am - 10:22 pmSIN-MDW
34h 47m2 stops
Delta Logo
7:16 pm - 12:10 amMDW-SIN
38h 54m2 stops
$953Delta
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Thu, Feb 19 - Mon, Feb 23
American Airlines Logo
8:15 am - 6:22 pmSIN-PIA
24h 07m2 stops
American Airlines Logo
6:10 am - 12:50 amPIA-SIN
28h 40m2 stops
$1,200American Airlines
Find Deal
Thu, Feb 19 - Mon, Feb 23
American Airlines Logo
8:15 am - 6:22 pmSIN-PIA
24h 07m2 stops
American Airlines Logo
6:10 am - 12:50 amPIA-SIN
28h 40m2 stops
$1,203American Airlines
Find Deal
Sun, May 10 - Tue, May 12
Delta Logo
1:10 am - 4:25 pmSIN-MDW
28h 15m2 stops
Delta Logo
6:45 pm - 11:40 pmMDW-SIN
39h 55m2 stops
$1,364Delta
Find Deal
Sat, Feb 14 - Wed, Feb 18
Japan Airlines Logo
8:15 am - 1:23 pmSIN-BMI
43h 08m2 stops
Japan Airlines Logo
7:20 am - 12:50 amBMI-SIN
27h 30m2 stops
$1,572Japan Airlines
Find Deal
Sat, Feb 14 - Wed, Feb 18
Japan Airlines Logo
8:15 am - 1:23 pmSIN-BMI
43h 08m2 stops
Japan Airlines Logo
7:20 am - 12:50 amBMI-SIN
27h 30m2 stops
$1,577Japan Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Singapore to Illinois flights

Get data-powered insights and trends into flights from Singapore 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 Singapore to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Singapore to Illinois departing in January.

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 round-trip 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 October, when tickets cost $906 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $1,561 and $1,284 respectively.

What’s the cheapest day of the week to fly from Singapore to Illinois?

The average price of all round-trip flights from Singapore to Illinois clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Singapore to Illinois, look for departures on Mondays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Illinois, Monday is the cheapest day to fly and Friday is the most expensive.

Good to know

Low seasonJanuary
Cheapest flight$503
Best time to beat the crowds but there is an average 56% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Singapore to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • 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 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 airlines flying from Singapore to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Singapore to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. 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.
7.6
Cathay PacificOverall score based on 1072 reviews
7.9Boarding
8.1Crew
7.3Food
7.8Entertainment
7.6Comfort
Airline reviews

Not much of anything could have been done better unless I had a first class ticket. I was literally 15 hours with an airline in the economy class. Very professional friendly and attentive crew. Good airline food, clean cabin, seating area and bathrooms. I've been 4 times back-and-forth with Cathay Pacific, and I would not choose another airline for this trip. Five out of five stars.

10.0 ExcellentErnest, Nov 2025HKG - SFO
Read more Cathay Pacific reviews

Not much of anything could have been done better unless I had a first class ticket. I was literally 15 hours with an airline in the economy class. Very professional friendly and attentive crew. Good airline food, clean cabin, seating area and bathrooms. I've been 4 times back-and-forth with Cathay Pacific, and I would not choose another airline for this trip. Five out of five stars.

It's basically 15 hours with an airline in economy class. There's really not much of anything that could have been done better unless I had a first class ticket. Cathay Pacific does excellent work, with a very professional, friendly and attentive crew. It's literally the only airline that I will fly to Southeast Asia.

Crew on this flight dedicate their business class service to their high priority members. They would get priority service even the seats are behind me, and meals priority service and orders. I get the left over choices. I refused to eat because I felt discriminated, never booking this airline.

First time tying out business class with this airline, hat a disappointment, never returning. We didn’t get the meal as requested from Singapore to HKG flight. While meals served connecting flight, crew takes meal order based off passenger membership status by giving the. Priority selection of meals. It was a battle, plain disappointment, not worth the hype, price, class as categorized/ advertised

Issues: 1) the charging issue as described in my previous survey 2) when I requested diet coke during the breakfast time, it is not available. Why? I can't drink diet coke in the morning? 3) when I tried to transfer to this flight, its gate information was not available to me?

The lead business class attendant was excellent. Made a point of greeting you and knowing your name by the time you leave.

A lot of things Never flying with this airline again Had an emergency landing

Chicken pieces were too big with pasta. Need to be smaller.

Seats in the absolute back row of the plane even though we booked ages ago :( Crew was awesome though

My connecting flight was canceled or never existed. My stopover went from 1 hour and a half to 10 hours. It was a long day that I wasn't prepared for and it would have been nice to know that ahead of time. Cathay is great though. Great staff, entertainment and food.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

United has come a long way, it’s been a fantastic experience traveling with them.

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Excellent all round, first time flying United. App is very helpful.

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

Everything you need to know for your flight from Singapore to Illinois

Information on your arrival and departure airports