Find cheap United Airlines flights to Illinois from $902

1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap United Airlines Flight Deals to Illinois

 
Here are some of the best deals found on KAYAK recently from United Airlines 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 return United Airlines flight deals from Australia to Illinois

Sun, 3 May - Sun, 17 May
United Airlines Logo
10:20 - 18:22SYD-STL
23h 02m1 stop
United Airlines Logo
05:20 - 06:55STL-SYD
34h 35m2 stops
$1,857United Airlines
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Thu, 18 Dec - Sun, 28 Dec
United Airlines Logo
11:40 - 17:04BNE-ORD
21h 24m2 stops
United Airlines Logo
07:05 - 07:30ORD-BNE
32h 25m1 stop
$2,042United Airlines
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Mon, 23 Mar - Sun, 12 Apr
United Airlines Logo
10:30 - 19:58MEL-ORD
25h 28m2 stops
United Airlines Logo
16:40 - 08:15ORD-MEL
24h 35m1 stop
$2,062United Airlines
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Wed, 11 Feb - Wed, 25 Mar
United Airlines Logo
11:30 - 18:46MEL-ORD
24h 16m2 stops
United Airlines Logo
16:08 - 09:00ORD-MEL
24h 52m2 stops
$2,069United Airlines
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Sun, 18 Jan - Fri, 26 Jun
United Airlines Logo
13:00 - 16:57MEL-ORD
20h 57m1 stop
United Airlines Logo
06:00 - 07:30ORD-MEL
34h 30m1 stop
$2,363United Airlines
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Tue, 30 Dec - Tue, 6 Jan
United Airlines Logo
11:50 - 23:00SYD-ORD
28h 10m2 stops
United Airlines Logo
18:30 - 09:05ORD-SYD
21h 35m1 stop
$2,372United Airlines
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Sun, 11 Jan - Mon, 26 Jan
United Airlines Logo
11:50 - 22:00SYD-STL
27h 10m1 stop
United Airlines Logo
16:15 - 09:15STL-SYD
24h 00m2 stops
$2,374United Airlines
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Tue, 30 Dec - Sat, 10 Jan
United Airlines Logo
11:50 - 19:55SYD-ORD
25h 05m1 stop
United Airlines Logo
19:58 - 09:15ORD-SYD
44h 17m1 stop
$2,374United Airlines
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Mon, 29 Dec - Mon, 5 Jan
United Airlines Logo
12:10 - 18:55SYD-ORD
23h 45m2 stops
United Airlines Logo
16:00 - 07:00ORD-SYD
22h 00m1 stop
$2,380United Airlines
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Thu, 11 Dec - Thu, 1 Jan
United Airlines Logo
11:30 - 16:58MEL-ORD
22h 28m2 stops
United Airlines Logo
13:55 - 09:30ORD-MEL
26h 35m2 stops
$2,437United Airlines
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Good to know

Low seasonFebruary
Cheapest flight$902
Average price round-trip$2,072
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (14% more expensive on average)
Flight from Melbourne to St. Louis
(price for this month)

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 day to fly to Illinois?

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

Based on KAYAK data, the cheapest day to fly to Illinois is Tuesday when return tickets can be as cheap as $1,933. On the other hand, the most expensive day to fly is Sunday, when return prices are $2,187 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Australia 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 Australia to Illinois is March, when tickets cost $1,647 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is $2,519 and $2,218 respectively.

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United Airlines customer reviews

7.4
Good9,017 verified ratings
6.6Food
7.7Boarding
7.1Entertainment
8.1Crew
7.3Comfort
Pros +
  • Flight was quick and easy. (in 2447 reviews)
Cons -
  • Have the middle seats vacant. (in 137 reviews)
  • The space in economy plus. (in 296 reviews)
Show reviews that mention
Traveller rating:
Sort by:
C
10.0 Wonderful
Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.
D
10.0 Wonderful
Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.
G
10.0 Wonderful
Is my favorite Lufthansa?
S
8.0 Very Good
Good trip. Good crew. Thank you!
S
8.0 Very Good
Great crew, excellent landing, good food. Over all great experience. Thank you!
N
8.0 Very Good
Entertainment and wifi did not work
A
4.0 Mediocre
Please figure out the delays
T
4.0 Mediocre
Older aircraft, no meal, only food was for purchase. Not impressed United.
T
4.0 Mediocre
United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.
C
10.0 Wonderful
Always wish for more healthy, gluten free options. We have to bring our own.
Read more about United Airlines

Everything you need to know for your flight to Illinois