Cheap Flights to Illinois | Popular Routes to Illinois from HK$856

View HK$856 flight on Sat, 25 Apr 2026Opens in a new window

Popular airlines to Illinois

  • Delta

  • Frontier Airlines

  • American Airlines

  • United

  • Southwest Airlines

  • Spirit 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$856 for one-way flights and HK$1,701 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 25 Apr - Thu, 30 Apr
PHL
Philadelphia
MDW
Chicago
HK$1,701 Return, found 9 hours ago
HK$1,701
Return
found 9 hours ago
Select Delta flight, departing Sat, 25 Apr from Philadelphia to Chicago, returning Thu, 30 Apr, priced at HK$1,701 found 9 hours ago
Delta
Sat, 25 Apr - Thu, 30 Apr
PHL
Philadelphia
ORD
Chicago
HK$1,701 Return, found 9 hours ago
HK$1,701
Return
found 9 hours ago
Select Delta flight, departing Sat, 25 Apr from Philadelphia to Chicago, returning Thu, 30 Apr, priced at HK$1,701 found 9 hours ago
United
Fri, 24 Apr - Mon, 27 Apr
PHL
Philadelphia
ORD
Chicago
HK$2,093 Return, found 22 hours ago
HK$2,093
Return
found 22 hours ago
Select United flight, departing Fri, 24 Apr from Philadelphia to Chicago, returning Mon, 27 Apr, priced at HK$2,093 found 22 hours ago
American Airlines
Fri, 24 Apr - Mon, 27 Apr
PHL
Philadelphia
ORD
Chicago
HK$2,093 Return, found 22 hours ago
HK$2,093
Return
found 22 hours ago
Select American Airlines flight, departing Fri, 24 Apr from Philadelphia to Chicago, returning Mon, 27 Apr, priced at HK$2,093 found 22 hours ago
Delta
Wed, 3 Jun - Sat, 25 Jul
HKG
Hong Kong SAR
ORD
Chicago
HK$5,480 Return, found 5 days ago
HK$5,480
Return
found 5 days ago
Select Delta flight, departing Wed, 3 Jun from Hong Kong SAR to Chicago, returning Sat, 25 Jul, priced at HK$5,480 found 5 days ago
Delta
Fri, 12 Jun - Wed, 29 Jul
HKG
Hong Kong SAR
MDW
Chicago
HK$5,496 Return, found 1 day ago
HK$5,496
Return
found 1 day ago
Select Delta flight, departing Fri, 12 Jun from Hong Kong SAR to Chicago, returning Wed, 29 Jul, priced at HK$5,496 found 1 day ago
Air Canada
Sun, 4 Oct - Sun, 1 Nov
HKG
Hong Kong SAR
ORD
Chicago
HK$6,123 Return, found 5 days ago
HK$6,123
Return
found 5 days ago
Select Air Canada flight, departing Sun, 4 Oct from Hong Kong SAR to Chicago, returning Sun, 1 Nov, priced at HK$6,123 found 5 days ago
Korean Air
Sat, 14 Nov - Thu, 19 Nov
HKG
Hong Kong SAR
ORD
Chicago
HK$6,602 Return, found 1 hour ago
HK$6,602
Return
found 1 hour ago
Select Korean Air flight, departing Sat, 14 Nov from Hong Kong SAR to Chicago, returning Thu, 19 Nov, priced at HK$6,602 found 1 hour ago
EVA Airways
Sat, 12 Sept - Mon, 21 Sept
HKG
Hong Kong SAR
ORD
Chicago
HK$6,728 Return, found 13 hours ago
HK$6,728
Return
found 13 hours ago
Select EVA Airways flight, departing Sat, 12 Sept from Hong Kong SAR to Chicago, returning Mon, 21 Sept, priced at HK$6,728 found 13 hours ago
EVA Airways
Wed, 23 Sept - Tue, 29 Sept
HKG
Hong Kong SAR
STL
St. Louis
HK$7,182 Return, found 2 days ago
HK$7,182
Return
found 2 days ago
Select EVA Airways flight, departing Wed, 23 Sept from Hong Kong SAR to St. Louis, returning Tue, 29 Sept, priced at HK$7,182 found 2 days ago

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.

Delta
Wed, 3 Jun - Sat, 25 Jul
HKG
Hong Kong SAR
ORD
Chicago
HK$5,480 Return, found 5 days ago
HK$5,480
Return
found 5 days ago
Select Delta flight, departing Wed, 3 Jun from Hong Kong SAR to Chicago, returning Sat, 25 Jul, priced at HK$5,480 found 5 days ago

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$1,701. 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$1,701 and HK$7,182. Many lucky travelers nabbed one-way tickets from Philadelphia (PHL) for as little as HK$856.
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$1,701 to HK$7,182.
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.

Book with confidence

About Illinois

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About Illinois

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