Cheap Flights to Illinois | Popular Routes to Illinois from HK$951

View HK$951 flight on Mon, 2 Feb 2026Opens in a new window

Popular airlines to Illinois

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Frontier Airlines

    Frontier Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Spirit Airlines

    Spirit Airlines

  • Alaska Airlines

    Alaska Airlines

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Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at HK$951 for one-way flights and HK$1,708 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 14 Feb - Tue, 17 Feb
LAX
Los Angeles
ORD
Chicago
HK$1,708 Return, found 3 days ago
HK$1,708
Return
found 3 days ago
Select Delta flight, departing Sat, 14 Feb from Los Angeles to Chicago, returning Tue, 17 Feb, priced at HK$1,708 found 3 days ago
Delta
Sat, 14 Feb - Tue, 17 Feb
LAX
Los Angeles
ORD
Chicago
HK$1,966 Return, found 3 days ago
HK$1,966
Return
found 3 days ago
Select Delta flight, departing Sat, 14 Feb from Los Angeles to Chicago, returning Tue, 17 Feb, priced at HK$1,966 found 3 days ago
Delta
Sat, 14 Feb - Tue, 17 Feb
LAX
Los Angeles
ORD
Chicago
HK$2,244 Return, found 3 days ago
HK$2,244
Return
found 3 days ago
Select Delta flight, departing Sat, 14 Feb from Los Angeles to Chicago, returning Tue, 17 Feb, priced at HK$2,244 found 3 days ago
Delta
Sat, 17 Jan - Sun, 18 Jan
LAX
Los Angeles
STL
St. Louis
HK$2,460 Return, found 5 days ago
HK$2,460
Return
found 5 days ago
Select Delta flight, departing Sat, 17 Jan from Los Angeles to St. Louis, returning Sun, 18 Jan, priced at HK$2,460 found 5 days ago
Delta
Fri, 20 Mar - Sun, 29 Mar
LAX
Los Angeles
MDW
Chicago
HK$2,471 Return, found 22 hours ago
HK$2,471
Return
found 22 hours ago
Select Delta flight, departing Fri, 20 Mar from Los Angeles to Chicago, returning Sun, 29 Mar, priced at HK$2,471 found 22 hours ago
Delta
Fri, 20 Mar - Sun, 29 Mar
LAX
Los Angeles
ORD
Chicago
HK$2,471 Return, found 22 hours ago
HK$2,471
Return
found 22 hours ago
Select Delta flight, departing Fri, 20 Mar from Los Angeles to Chicago, returning Sun, 29 Mar, priced at HK$2,471 found 22 hours ago
Delta
Sat, 14 Feb - Tue, 17 Feb
LAX
Los Angeles
ORD
Chicago
HK$2,482 Return, found 3 days ago
HK$2,482
Return
found 3 days ago
Select Delta flight, departing Sat, 14 Feb from Los Angeles to Chicago, returning Tue, 17 Feb, priced at HK$2,482 found 3 days ago
Alaska Airlines
Wed, 21 Jan - Thu, 29 Jan
LAX
Los Angeles
ORD
Chicago
HK$2,815 Return, found 3 days ago
HK$2,815
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 21 Jan from Los Angeles to Chicago, returning Thu, 29 Jan, priced at HK$2,815 found 3 days ago
American Airlines
Thu, 26 Mar - Sun, 29 Mar
LAX
Los Angeles
ORD
Chicago
HK$2,857 Return, found 3 days ago
HK$2,857
Return
found 3 days ago
Select American Airlines flight, departing Thu, 26 Mar from Los Angeles to Chicago, returning Sun, 29 Mar, priced at HK$2,857 found 3 days ago
United
Sat, 14 Feb - Tue, 17 Feb
LAX
Los Angeles
ORD
Chicago
HK$3,123 Return, found 3 days ago
HK$3,123
Return
found 3 days ago
Select United flight, departing Sat, 14 Feb from Los Angeles to Chicago, returning Tue, 17 Feb, priced at HK$3,123 found 3 days ago

About Illinois

Expedia offers flights to Illinois to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Illinois or destinations around the world and discover how easy it is to make your flight reservations on Expedia.

Frequently asked questions

How do I find cheap flights to Illinois that have flexible change policies?
Search for cheap flights to Illinois, then tick the "No change fee" box under the "Flexible change policies" heading. From then on it's smooth sailing. We understand that travel plans change and flexibility is essential, so book with confidence with Expedia.
Which airlines fly to Illinois?
Whether you're travelling somewhere new or rendezvousing at a favourite haunt, these airlines are waiting to take you into or near Illinois:

  • United Airlines - 13,063 flights to or near Illinois each month, including 12,950 flights to O'Hare Intl. Airport (ORD) and 108 flights to Quad City Intl. Airport (MLI) per month.
  • American Airlines - 8,977 flights to or near Illinois each month, including 8,855 flights to O'Hare Intl. Airport (ORD) and 121 flights to Quad City Intl. Airport (MLI) per month.
  • Southwest Airlines - 5,997 flights to or near Illinois each month, including 5,334 flights to Midway Intl. Airport (MDW) and 663 flights to O'Hare Intl. Airport (ORD) per month.

How can I find cheap tickets to Illinois?
One of the easiest ways to find cheap tickets to Illinois is to be flexible with your travel dates. Search for your flights, then click "flexible dates" at the top of your results. It'll reveal the cheapest prices for nearby days. The lowest price for a flight to Illinois in the last seven days was HK$1,708. Booking well in advance will generally help you score an even bigger bargain.
How much is a flight to Illinois?
There were plenty of bargain fares up for grabs in the last seven days, with the cost of a return airfare to Illinois ranging between HK$1,708 and HK$6,579. Many lucky travelers nabbed one-way tickets from Los Angeles (LAX) for as little as HK$951.
What are the most popular airports to fly into in Illinois?
Touch down at one of these top Illinois airports and you'll be perfectly placed to discover all that this wonderful region has to offer:

  • O'Hare Intl. Airport (ORD) - 25,318 flights per month.
  • Midway Intl. Airport (MDW) - 5,962 flights per month.
  • Quad City Intl. Airport (MLI) - 325 flights per month.

When is the cheapest time to fly to Illinois?
Take off for Illinois early in the week and you'll usually be rewarded more economical fares. Tuesday is typically the cheapest day to hop on a plane, followed by Monday. If you're hoping to avoid the most expensive flights, steer clear of Saturdays.
How much is a plane ticket to Illinois?
In the last seven days, plane fares to Illinois ranged from HK$1,708 to HK$6,579.
What is the best time to go to Illinois?
A terrific time to check out Chicago is after June 20 when the summer season starts. In Illinois's main city, average temperatures range from 18ºC to 24ºC at this time — ideal weather for sightseeing! May, June and August are the most popular months to head to this hot spot.
What months are the cheapest to book a flight to Illinois?
The top month to purchase affordable flights to Illinois is February. Remember that in the U.S, an expensive time to reserve a ticket is during the busy month of December.

Trending flights to Illinois

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Airlines
Tue, 26 May - Tue, 9 Jun
HKG
Hong Kong SAR
ORD
Chicago
HK$6,579 Return, just found
HK$6,579
Return
just found
Select China Airlines flight, departing Tue, 26 May from Hong Kong SAR to Chicago, returning Tue, 9 Jun, priced at HK$6,579 just found
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