Cheap Flights to Illinois

View NZ$161 flight on Thu, 7 May 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Illinois

  • Frontier Airlines

  • Delta

  • American Airlines

  • United

  • Spirit Airlines

  • Alaska Airlines

  • JetBlue Airways

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Cheapest Flights to Illinois

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 7 May - Wed, 13 May
SFO
San Francisco
ORD
Chicago
NZ$320 Return, found 2 days ago
NZ$320
Return
found 2 days ago
Select Delta flight, departing Thu, 7 May from San Francisco to Chicago, returning Wed, 13 May, priced at NZ$320 found 2 days ago
Delta
Wed, 7 Oct - Fri, 16 Oct
SFO
San Francisco
ORD
Chicago
NZ$355 Return, found 2 days ago
NZ$355
Return
found 2 days ago
Select Delta flight, departing Wed, 7 Oct from San Francisco to Chicago, returning Fri, 16 Oct, priced at NZ$355 found 2 days ago
Delta
Thu, 7 May - Wed, 13 May
SFO
San Francisco
ORD
Chicago
NZ$371 Return, found 2 days ago
NZ$371
Return
found 2 days ago
Select Delta flight, departing Thu, 7 May from San Francisco to Chicago, returning Wed, 13 May, priced at NZ$371 found 2 days ago
American Airlines
Sat, 23 May - Wed, 27 May
SFO
San Francisco
ORD
Chicago
NZ$431 Return, found 5 days ago
NZ$431
Return
found 5 days ago
Select American Airlines flight, departing Sat, 23 May from San Francisco to Chicago, returning Wed, 27 May, priced at NZ$431 found 5 days ago
Delta
Mon, 4 May - Sat, 16 May
SFO
San Francisco
MDW
Chicago
NZ$450 Return, found 1 day ago
NZ$450
Return
found 1 day ago
Select Delta flight, departing Mon, 4 May from San Francisco to Chicago, returning Sat, 16 May, priced at NZ$450 found 1 day ago
Alaska Airlines
Thu, 7 May - Wed, 13 May
SFO
San Francisco
ORD
Chicago
NZ$555 Return, found 2 days ago
NZ$555
Return
found 2 days ago
Select Alaska Airlines flight, departing Thu, 7 May from San Francisco to Chicago, returning Wed, 13 May, priced at NZ$555 found 2 days ago
Alaska Airlines
Sat, 9 May - Tue, 12 May
SFO
San Francisco
STL
St. Louis
NZ$577 Return, found 5 days ago
NZ$577
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 9 May from San Francisco to St. Louis, returning Tue, 12 May, priced at NZ$577 found 5 days ago
United
Thu, 7 May - Wed, 13 May
SFO
San Francisco
ORD
Chicago
NZ$602 Return, found 2 days ago
NZ$602
Return
found 2 days ago
Select United flight, departing Thu, 7 May from San Francisco to Chicago, returning Wed, 13 May, priced at NZ$602 found 2 days ago
Air Tahiti Nui
Tue, 10 Nov - Tue, 17 Nov
AKL
Auckland
ORD
Chicago
NZ$2,046 Return, found 10 hours ago
NZ$2,046
Return
found 10 hours ago
Select Air Tahiti Nui flight, departing Tue, 10 Nov from Auckland to Chicago, returning Tue, 17 Nov, priced at NZ$2,046 found 10 hours ago
Air Tahiti Nui
Thu, 7 May - Thu, 14 May
AKL
Auckland
STL
St. Louis
NZ$2,315 Return, found 8 hours ago
NZ$2,315
Return
found 8 hours ago
Select Air Tahiti Nui flight, departing Thu, 7 May from Auckland to St. Louis, returning Thu, 14 May, priced at NZ$2,315 found 8 hours ago

Airports in Illinois

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to O'Hare Intl. ORD. Cheapest option available. Flights from NZ$419
ORD
O'Hare Intl.
Cheapest
Flights from NZ$419
Select flight to Midway Intl. MDW. Cheapest option available. Flights from NZ$419
MDW
Midway Intl.
Cheapest
Flights from NZ$419

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.

American Airlines
Tue, 26 May - Mon, 7 Sept
CHC
Christchurch
ORD
Chicago
NZ$2,437 Return, found 20 hours ago
NZ$2,437
Return
found 20 hours ago
Select American Airlines flight, departing Tue, 26 May from Christchurch to Chicago, returning Mon, 7 Sept, priced at NZ$2,437 found 20 hours 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 NZ$320. 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 NZ$320 and NZ$2,437. Many lucky travellers nabbed one-way tickets from San Francisco (SFO) for as little as NZ$161.
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 NZ$320 to NZ$2,437.
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.

Travel information

Illinois Flights Information

Airlines serving
Delta, American Airlines, Alaska Airlines, United, Air Tahiti Nui
Roundtrip price
from NZ$320
Illinois Flights Information

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