Find flights
Deals
When to book
Airlines
Travel Guide

Cheap flights to Illinois from C$ 80

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
WAS — ORD
2 Apr — 9 Apr1
1 adult
Tue 2/4
Tue 9/4

Find deals on flights to Illinois by searching across hundreds of travel sites at once.

 
Cheapflights users frequently choose these airlines when searching for flights to Illinois, based on our search results.
Cheapflights users frequently choose these airlines when searching for flights to Illinois, based on our search results.
Here’s why our users search for flights through Cheapflights

Save over 18%Compare Cheapflights against other travel sites with one search.

Price trackingHolding out for a great deal? Get notified when prices are reduced.

Customized resultsFilter for flights based on cabin class, airline, free Wi-Fi, and more.

Unlimited free useSearch as many times as you want with no hidden charges or fees.

Flights to Illinois in 2024

Find the latest flights to Illinois in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 586,909 searches and data was last updated on 28 March 2024.

Popular in

July

Cheapest in

January

Average price

C$ 342

Round-trip from

C$ 277

One-way from

C$ 162
High demand for flights, 13% potential price rise
Best time to find cheap flights, 1% potential price drop
Average for round-trip flights in March 2024
From Toronto to Chicago
One-way flight from Toronto to Illinois

Find flights to Illinois

Browse one-way and round-trip flights deals to Illinois on Cheapflights. Flight deals are based on user searches and were last updated on 28 March 2024
Explore Illinois

Cheap flights to Illinois in March & April 2024

Search the best deals to popular Illinois cities recently found by Cheapflights users
The below flights offer some of the lowest fares to Illinois in March and April 2024. Check back soon for alternative prices as deals update often.
Cheap flights to Chicago, IL
Thu 11/48:37 a.m.LGA - ORD
Nonstop2h 37mSpirit Airlines
Thu 11/45:09 p.m.ORD - LGA
Nonstop2h 15mSpirit Airlines
Deal found 27/3C$ 117
Sat 27/48:25 a.m.DTW - ORD
Nonstop1h 24mDelta
Sat 4/511:45 a.m.ORD - DTW
Nonstop1h 19mDelta
Deal found 28/3C$ 135
Tue 23/411:46 p.m.SEA - ORD
Nonstop3h 59mAlaska Airlines
Wed 24/48:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 26/3C$ 151
Thu 11/46:00 a.m.LGA - ORD
1 stop5h 32mMultiple Airlines
Thu 11/45:09 p.m.ORD - LGA
Nonstop2h 15mMultiple Airlines
Deal found 27/3C$ 156
Sat 20/45:58 p.m.SEA - ORD
Nonstop4h 00mAlaska Airlines
Sat 27/46:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 27/3C$ 159
Sat 27/412:15 p.m.DTW - ORD
Nonstop1h 20mDelta
Mon 29/48:45 a.m.ORD - DTW
Nonstop1h 21mDelta
Deal found 27/3C$ 162
Tue 30/411:46 p.m.SEA - ORD
Nonstop3h 59mAlaska Airlines
Tue 7/56:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 28/3C$ 174
Wed 24/46:05 p.m.DTW - ORD
Nonstop1h 30mDelta
Wed 1/58:45 a.m.ORD - DTW
Nonstop1h 21mDelta
Deal found 27/3C$ 175
Sat 20/45:58 p.m.SEA - ORD
Nonstop4h 00mAlaska Airlines
Tue 23/46:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 28/3C$ 189
Cheap flights to Peoria, IL
Sun 31/310:49 a.m.DTW - PIA
1 stop28h 38mMultiple Airlines
Mon 1/49:57 p.m.PIA - DTW
1 stop13h 26mMultiple Airlines
Deal found 26/3C$ 738
Sun 31/32:30 p.m.DTW - PIA
2 stops18h 50mMultiple Airlines
Mon 1/49:57 p.m.PIA - DTW
1 stop13h 26mMultiple Airlines
Deal found 26/3C$ 760
Cheap flights to Moline, IL
Sat 20/44:00 p.m.DCA - MLI
1 stop7h 17mDelta
Wed 24/45:03 p.m.MLI - DCA
1 stop5h 54mDelta
Deal found 26/3C$ 310
Tue 23/44:42 p.m.BWI - MLI
1 stop6h 35mDelta
Sat 27/46:00 a.m.MLI - BWI
1 stop6h 03mDelta
Deal found 27/3C$ 337
Sat 27/45:55 p.m.IAD - MLI
1 stop5h 22mDelta
Wed 1/55:03 p.m.MLI - IAD
1 stop5h 56mDelta
Deal found 27/3C$ 366
Sat 27/45:55 p.m.IAD - MLI
1 stop5h 22mDelta
Wed 1/55:03 p.m.MLI - IAD
1 stop5h 56mDelta
Deal found 26/3C$ 372
Thu 25/410:00 a.m.BWI - MLI
1 stop7h 17mDelta
Thu 2/55:03 p.m.MLI - BWI
1 stop4h 51mDelta
Deal found 26/3C$ 393
Tue 23/48:35 p.m.SFO - MLI
2 stops17h 42mDelta
Sat 27/45:08 p.m.MLI - SFO
1 stop8h 16mDelta
Deal found 27/3C$ 405
Tue 16/45:48 p.m.IAD - MLI
1 stop5h 29mDelta
Sun 21/45:03 p.m.MLI - IAD
1 stop5h 56mDelta
Deal found 27/3C$ 412
Wed 17/412:46 p.m.IAD - MLI
1 stop5h 12mUnited Airlines
Tue 23/45:45 p.m.MLI - IAD
1 stop5h 14mUnited Airlines
Deal found 27/3C$ 419
Sat 27/46:00 a.m.SFO - MLI
1 stop8h 17mDelta
Wed 1/55:03 p.m.MLI - SFO
1 stop8h 21mDelta
Deal found 26/3C$ 425

Illinois 2024 flight deals

Explore flight deals for Illinois in 2024, offering the best prices and options to suit your preferences. In the last 7 days, Cheapflights users made a total of 586,909 searches and data were last updated on 28 March 2024.
The lowest fares on flights travelling to Illinois in March and April 2024. Check back soon for alternative fares.
Thu 11/48:37 a.m.LGA - ORD
Nonstop2h 37mSpirit Airlines
Thu 11/45:09 p.m.ORD - LGA
Nonstop2h 15mSpirit Airlines
Deal found 27/3C$ 117
Tue 23/411:46 p.m.SEA - ORD
Nonstop3h 59mAlaska Airlines
Wed 24/48:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 26/3C$ 151
Thu 11/46:00 a.m.LGA - ORD
1 stop5h 32mMultiple Airlines
Thu 11/45:09 p.m.ORD - LGA
Nonstop2h 15mMultiple Airlines
Deal found 27/3C$ 156
Sat 20/45:58 p.m.SEA - ORD
Nonstop4h 00mAlaska Airlines
Sat 27/46:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 27/3C$ 159
Tue 9/75:35 p.m.LGA - ORD
Nonstop2h 50mDelta
Wed 17/76:00 a.m.ORD - LGA
Nonstop2h 09mDelta
Deal found 27/3C$ 173
Fri 3/511:46 p.m.SEA - ORD
Nonstop3h 59mAlaska Airlines
Tue 7/56:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 27/3C$ 174
Sat 4/57:30 a.m.LGA - ORD
Nonstop2h 45mDelta
Wed 8/57:30 a.m.ORD - LGA
Nonstop2h 13mDelta
Deal found 27/3C$ 181
Sat 8/610:49 p.m.SEA - ORD
Nonstop4h 06mAlaska Airlines
Wed 12/69:20 p.m.ORD - SEA
Nonstop4h 35mAlaska Airlines
Deal found 27/3C$ 189
Sat 27/47:45 p.m.LGA - ORD
Nonstop2h 47mDelta
Sat 4/55:50 p.m.ORD - LGA
Nonstop2h 14mDelta
Deal found 28/3C$ 189

Flights to Illinois departing soon

Discover available last-minute flight options to Illinois, providing immediate availability and potentially lower prices. In the last 7 days, Cheapflights users made a total of 586,909 searches and data was last updated on 28 March 2024.
Browse some of the best deals on flights leaving last minute to Illinois. Prices refresh often so be sure to come back soon for more deals.
Sun 7/47:10 a.m.LGA - ORD
Nonstop2h 56mDelta
Fri 12/47:15 a.m.ORD - LGA
Nonstop2h 17mDelta
Deal found 27/3C$ 359
Thu 4/412:55 a.m.SFO - MLI
2 stops13h 38mDelta
Tue 9/46:00 a.m.MLI - SFO
2 stops14h 14mDelta
Deal found 28/3C$ 4,813

One-way flights to Illinois

Explore one-way flight options to Illinois for greater flexibility in your travel plans. Find up-to-date pricing and availability for one-way flights. In the last 7 days, Cheapflights users made a total of 586,909 searches and data was last updated on 28 March 2024.
Choose from one of these one-way flights departing to Illinois. Those seeking round-trip flights to Illinois should utilize the search form at the top of the page.
Tue 30/46:00 p.m.SEA - ORD
Nonstop3h 58mDelta
Deal found 28/3C$ 80
Sun 14/47:20 a.m.FNT - PIA
1 stop4h 06mUnited Airlines
Deal found 28/3C$ 379
Fri 12/412:09 a.m.SFO - MLI
1 stop8h 14mUnited Airlines
Deal found 27/3C$ 264

Direct flights to Illinois

Thu 11/48:37 a.m.LGA - ORD
Nonstop2h 37mSpirit Airlines
Thu 11/45:09 p.m.ORD - LGA
Nonstop2h 15mSpirit Airlines
Deal found 27/3C$ 117
Tue 23/411:46 p.m.SEA - ORD
Nonstop3h 59mAlaska Airlines
Wed 24/48:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 26/3C$ 151
Sat 20/45:58 p.m.SEA - ORD
Nonstop4h 00mAlaska Airlines
Sat 27/46:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 27/3C$ 159
Tue 9/75:35 p.m.LGA - ORD
Nonstop2h 50mDelta
Wed 17/76:00 a.m.ORD - LGA
Nonstop2h 09mDelta
Deal found 27/3C$ 173
Fri 3/511:46 p.m.SEA - ORD
Nonstop3h 59mAlaska Airlines
Tue 7/56:00 a.m.ORD - SEA
Nonstop4h 34mAlaska Airlines
Deal found 27/3C$ 174
Sat 4/53:00 p.m.LGA - ORD
Nonstop2h 48mDelta
Tue 7/59:50 a.m.ORD - LGA
Nonstop2h 09mDelta
Deal found 27/3C$ 181
Sat 8/610:49 p.m.SEA - ORD
Nonstop4h 06mAlaska Airlines
Wed 12/69:20 p.m.ORD - SEA
Nonstop4h 35mAlaska Airlines
Deal found 27/3C$ 189
Sat 27/47:45 p.m.LGA - ORD
Nonstop2h 47mDelta
Sat 4/55:50 p.m.ORD - LGA
Nonstop2h 14mDelta
Deal found 28/3C$ 189
Fri 7/68:04 p.m.LGA - ORD
Nonstop2h 37mSpirit Airlines
Mon 10/65:19 p.m.ORD - LGA
Nonstop2h 09mSpirit Airlines
Deal found 27/3C$ 200

Find flights to Illinois within your budget

Locate flights to Illinois that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 586,909 searches and data was last updated on 28 March 2024.

Fly from

Any airport

Budget

C$ 117 - C$ 260

Route

Depart

Return

Price

New York LaGuardiaChicago O'Hare Intl

LGA - ORD

LGAORD

New York LaGuardia

Thu 11/4

Nonstop2h 37m

Chicago O'Hare Intl

Thu 11/4

Nonstop2h 15m

C$ 117

Seattle/Tacoma IntlChicago O'Hare Intl

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Tue 23/4

Nonstop3h 59m

Chicago O'Hare Intl

Wed 24/4

Nonstop4h 34m

C$ 151

New York LaGuardiaChicago O'Hare Intl

LGA - ORD

LGAORD

New York LaGuardia

Thu 11/4

1 stop5h 32m

Chicago O'Hare Intl

Thu 11/4

Nonstop2h 15m

C$ 156

Seattle/Tacoma IntlChicago O'Hare Intl

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 20/4

Nonstop4h 00m

Chicago O'Hare Intl

Sat 27/4

Nonstop4h 34m

C$ 159

New York LaGuardiaChicago O'Hare Intl

LGA - ORD

LGAORD

New York LaGuardia

Tue 9/7

Nonstop2h 50m

Chicago O'Hare Intl

Wed 17/7

Nonstop2h 09m

C$ 173

Washington, D.C. Reagan-NationalChicago O'Hare Intl

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Wed 24/4

1 stop6h 39m

Chicago O'Hare Intl

Wed 1/5

1 stop8h 17m

C$ 217

Washington, D.C. Reagan-NationalChicago O'Hare Intl

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 18/5

Nonstop2h 15m

Chicago O'Hare Intl

Tue 21/5

1 stop4h 40m

C$ 246

Washington, D.C. Dulles IntlChicago O'Hare Intl

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Sat 18/5

Nonstop2h 09m

Chicago O'Hare Intl

Tue 21/5

Nonstop1h 52m

C$ 257

Seattle/Tacoma IntlChicago O'Hare Intl

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Thu 18/4

1 stop24h 47m

Chicago O'Hare Intl

Mon 22/4

1 stop28h 08m

C$ 260

Flights are sorted by cheapest first

Deals found on 27/3

Average price of flights to Illinois by month

Plan your trip to Illinois by taking into account the cheapest months to travel. The average price of a one-way flight to Illinois is currently C$ 241 while a round-trip flight costs C$ 193. Price data was last updated on 24 March 2024.

Currently, January is the cheapest month in which you can book a flight to Illinois (average of C$ 261). Flying to Illinois in August will prove the most costly (average of C$ 447). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

January

C$ 355

February

C$ 413

March

C$ 440

April

C$ 473

May

C$ 500

June

C$ 541

July

C$ 588

August

C$ 607

September

C$ 465

October

C$ 500

November

C$ 459

December

C$ 474

Temperature and rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average temperature and rainfall totals by month.

CHI

Temperature

-5 - 23 °C

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

When is the best time to book a flight to Illinois?

Use this chart to determine the optimal time to book a round-trip flight to Illinois. Price data was last updated on 28 January 2024.
The best time to book flights to Illinois is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 28 March 2024.
Read through reviews of airlines servicing Illinois, such as Delta, Air Canada and WestJet. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,127 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.4

Overall

8.1

Comfort

7.9

Food

7.3

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

8.1
Very good
9,127 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.4

Overall

8.1

Comfort

7.9

Food

7.3

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

8.1
Very good
11,402 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.4

Overall

8.1

Comfort

7.9

Food

7.3

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

7.7
Good
2,750 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.4

Overall

8.1

Comfort

7.9

Food

7.3

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

7.5
Good
3,036 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.4

Overall

8.1

Comfort

7.9

Food

7.3

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

7.3
Good
451 reviews
8.1
Very good
9,127 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.4

Overall

8.1

Comfort

7.9

Food

7.3

Reviews

1 / 10

I would have liked flying out of the airport I chose not a different airport. My flight was moved to San Jose

Brush up on your American history before your flight to Chicago: Home of President Abraham Lincoln, Lake Michigan, and ‘da Chicago Bears, Illinois has something for everyone. Whether you’re a history buff or a sports fanatic, it’s worth booking flights to Illinois.

The 21st state, located is the heart of the Midwest, is easy to get to thanks to two airports and one of the largest train stations in the country. Flights to Illinois are serviced by major airlines and Amtrak trains head right into the centre of Chicago. 

In between shopping and sports, make sure to visit one of Illinois’ numerous museums before boarding your Illinois flight home. The Burpee Museum of Natural History in Rockford features dinosaur fossils while the Abraham Lincoln Presidential Library and Museum in Springfield is the largest presidential library in the country. Tourists booking Illinois flights to Chicago can explore the John G. Shedd Aquarium, the Field Museum of Natural History, the Art Institute of Chicago, and the Museum of Science and Industry (Chicago). 

Book a flight to Illinois to experience a plethora of cultures wrapped into one state. 

Illinois climate

Winters along the Great Lakes are long and cold. From late November into April, there is plenty of snow, icy winds, and sub-freezing temperatures, but it’s also the best time to find cheap flights to Illinois. Conversely, July and August can be hot and sticky and good Illinois flight and hotel deals are usually available. Spring and fall tend to have perfect weather and are great times to visit, although the tornado season is March through May.Chicago summers can have temperatures well into the 30s (C) with humidity to match. Winters are cold and raw with temperatures in the teens and occasional blizzards. Mild winters are not uncommon, but if booking Illinois flight and travel plans during the winter it’s advisable to pack with snow and cold in mind.

Getting around Illinois

A tough city to drive in, Chicago has convenient public transportation, taxis are easy to come by, and many areas are a pleasure to walk through. The Chicago Transit Authority operates the “L” (or “El”) a system of elevated trains that run 24 hours a day. There is also a River Bus that runs during rush hour in the summer, and the city is becoming increasingly bike friendly.

Except for Chicago, Illinois is mostly a quiet, rural state. Yet Amtrak trains, numerous commuter railroads, and, to a lesser extent, buses make getting around on public transportation feasible. Cycling is also generally easy on the state’s flat plains.

Once you reach your destination, check for local transportation, but be prepared to rent a car.

  • When is the best time to fly to Illinois?

    Peak Season: Winter is a prime time for skiing and snowmobiling in Illinois. Summer is the peak of the festival season in the Chicago area with major events taking place in the parks and neighbourhoods every weekend, despite the heat and humidity. While many tourists gather on the great state of Illinois during the summer season, it’s more likely cheap flights to Illinois will be available during the winter months. Off Season: September can be the most enjoyable and mildest month of the year to visit Chicago, but there is less going on during this period. Fall is a wonderful time to visit the rest of the state and enjoy the milder temperatures and changing foliage. January to March is when Chicago is least busy and deals on hotels are usually attainable. However, it can be cold and windy.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly your favourite airline to Illinois
Fly your favourite airline to Illinois. Flight routes are based on user searches made on Cheapflights and were last updated on 28 March 2024.

Search flights to Illinois by cabin class

Find flights to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Classfrom C$ 725/person
Business Classfrom C$ 442/person
Prem Econ Classfrom C$ 543/person
Economy Classfrom C$ 162/person