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Find cheap flights to Illinois

Find cheap flights to Illinois

Return
Economy
Boston (BOS)
Illinois
Fri 10/7
Fri 17/7
Any month
Compare vs KAYAK |
Search hundreds of travel sites at once for deals on flights to Illinois

Latest Illinois Flight Deals

Chicago
Direct from RM 3,587
Direct from RM 3,587

Good to know

Low season

June Best time to beat the crowds (5% less expensive on average)

High season

August Most popular time to fly (9% more expensive on average)

Average price of a return ticket

RM 1,096 (avg. price over the last 2 weeks)

Good deal for a return ticket

RM 955 or less

Top tips for finding cheap flights to Illinois

  • Looking for cheap airfare to Illinois? 25% of our users found return tickets to Illinois for the following prices or less: From Penang Intl RM 3,451, from Kuala Lumpur RM 3,587
  • High season is considered to be January, February and December. The cheapest month to fly to Illinois is January.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Illinois flight deals.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs - booking Illinois flights

How long is the flight to Illinois?

What is the cheapest flight to Illinois?

What is the most popular destination in Illinois?

How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?

Top 5 airlines flying to Illinois

Scores according to KAYAK customer reviews

8.7
JAL
Overall score based on 4,471 reviews
8.9
Boarding
8.6
Comfort
9.1
Crew
8.6
Entertainment
8.5
Food
Airline reviews
Read more about JAL

Book cheap flights to Illinois (Return)

Airports
Origin
Kuala Lumpur
RM 3,306
only
RM 3,306
Destination
Chicago
RM 3,306
only
RM 3,306
Fri, 2 Oct
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
Tue, 3 Nov
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
23h 35m
RM 3,306
Trip: 33 days
Based on null reviews
Wed, 12 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
29h 25m
Thu, 28 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
23h 35m
RM 3,597
Trip: 170 days
Based on null reviews
Sun, 9 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
46h 00m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
41h 30m
RM 3,738
Trip: 176 days
Based on null reviews
Sun, 9 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
33h 25m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
23h 35m
RM 4,327
Trip: 176 days
Based on null reviews
Sat, 8 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
26h 05m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
28h 50m
RM 4,383
Trip: 177 days
Based on null reviews
Sun, 9 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
27h 50m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
32h 25m
RM 4,742
Trip: 176 days
Based on null reviews
Sat, 8 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
23h 35m
RM 3,452
Trip: 177 days
Based on null reviews
Wed, 15 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
29h 25m
Wed, 22 Jul
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
29h 40m
RM 3,644
Trip: 8 days
Based on null reviews
Sun, 9 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
23h 55m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
41h 30m
RM 3,768
Trip: 176 days
Based on null reviews
Tue, 11 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
Sat, 30 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
31h 00m
RM 3,473
Trip: 173 days
Based on null reviews
Fri, 7 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
29h 25m
Mon, 1 Feb
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
23h 35m
RM 3,669
Trip: 179 days
Based on null reviews
Sun, 9 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
Thu, 28 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
23h 35m
RM 3,631
Trip: 173 days
Based on null reviews
Fri, 7 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
29h 25m
Fri, 29 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
23h 35m
RM 3,742
Trip: 176 days
Based on null reviews
Sun, 9 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
34h 02m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
41h 30m
RM 4,144
Trip: 176 days
Based on null reviews
Sun, 9 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
36h 40m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
32h 25m
RM 4,746
Trip: 176 days
Based on null reviews
Thu, 6 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
Sun, 31 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
31h 00m
RM 3,699
Trip: 179 days
Based on null reviews
Thu, 6 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
23h 55m
Wed, 3 Feb
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
41h 30m
RM 4,161
Trip: 182 days
Based on null reviews
Sat, 3 Oct
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
20h 45m
Tue, 3 Nov
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
24h 25m
RM 3,815
Trip: 32 days
Based on null reviews
Thu, 6 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
Mon, 1 Feb
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
36h 45m
RM 3,716
Trip: 180 days
Based on null reviews
Fri, 7 Aug
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
23h 55m
Sat, 30 Jan
ORD
Chicago O'Hare Airport
KUL
Kuala Lumpur Airport
41h 30m
RM 4,191
Trip: 177 days
Based on null reviews

Book cheap flights to Illinois (One-way)

Airports
Origin
Kuala Lumpur
RM 2,273
only
RM 2,273
Destination
Chicago
RM 2,273
only
RM 2,273
Sat, 18 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
RM 2,273
Based on null reviews
Sun, 19 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
30h 55m
RM 2,576
Based on null reviews
Sat, 18 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
26h 00m
RM 2,742
Based on null reviews
Sun, 19 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
34h 25m
RM 2,841
Based on null reviews
Sun, 19 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
33h 50m
RM 3,627
Based on null reviews
Tue, 23 Jun
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
RM 2,384
Based on null reviews
Thu, 25 Jun
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
23h 20m
RM 5,002
Based on null reviews
Thu, 25 Jun
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
24h 20m
RM 2,473
Based on null reviews
Sun, 19 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
31h 15m
RM 2,913
Based on null reviews
Thu, 25 Jun
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
36h 10m
RM 5,835
Based on null reviews
Wed, 24 Jun
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
23h 14m
RM 2,956
Based on null reviews
Wed, 1 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
26h 00m
RM 3,012
Based on null reviews
Sun, 19 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
25h 55m
RM 3,165
Based on null reviews
Sat, 18 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
48h 40m
RM 3,041
Based on null reviews
Thu, 2 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
31h 30m
RM 3,704
Based on null reviews
Tue, 23 Jun
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
50h 48m
RM 3,204
Based on null reviews
Sat, 18 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
32h 07m
RM 3,516
Based on null reviews
Thu, 2 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
41h 55m
RM 3,229
Based on null reviews
Thu, 25 Jun
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
49h 21m
RM 3,293
Based on null reviews
Thu, 2 Jul
KUL
Kuala Lumpur Airport
ORD
Chicago O'Hare Airport
23h 20m
RM 5,361
Based on null reviews
*
Prices are per person, are for e–tickets and include all taxes & fees in MYR.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car hires can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

More questions or if you have a bad price to report to us
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