Cheap flights to Illinois

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Home Flights North America USA Cheap flights to Illinois, United States

Flights to Illinois in 2022

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
Popular inDecemberHigh demand for flights, 19% potential price rise
Cheapest inAprilBest time to find cheap flights, 5% potential price drop
Average price$99Average for round-trip flights in May 2022
Round-trip from$140From Las Vegas Harry Reid Intl to Illinois
One-way from$10One-way flight from Las Vegas Harry Reid Intl (LAS) to Illinois

Cheap flights to Illinois in May, June 2022

The best prices found for STL flights for May, June
2 Jun - 4 Jun
$145pp
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
28 May - 31 May
$161pp
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
28 May - 31 May
$162pp
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl

Illinois 2022 flight deals

Cheap flights to Illinois found for this year
22 Aug - 30 Aug
$100pp
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
22 Aug - 30 Aug
$106pp
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl
21 Sep - 24 Sep
$120pp
LAS
Las Vegas Harry Reid Intl
Frontier
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
Non-Stop
LAS
Las Vegas Harry Reid Intl

Last minute flights to Illinois

Late deals on round-trip flights to Illinois, departing today and this week
2 Jun - 4 Jun
$145pp
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
2 Jun - 4 Jun
$162pp
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl
4 Jun - 6 Jun
$163pp
LAS
Las Vegas Harry Reid Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
LAS
Las Vegas Harry Reid Intl

COVID Restrictions

View COVID Travel Restrictions for Illinois

Can I fly to Illinois from USA right now?

Information is based on travel restrictions for travel to Illinois within the United States

Most visitors from USA need to provide a negative COVID-19 test result and/or quarantine to enter Illinois.

COVID-19 testing requirements
Visitors from USA must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Illinois.

Quarantine requirements
Visitors from USA are not required to quarantine after entering Illinois.

Can I fly back to USA from Illinois?

Returning to USA from Illinois

COVID-19 testing requirements
Visitors from Illinois must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to USA.

Quarantine requirements
Visitors from Illinois are not required to quarantine after entering USA.

Hide COVID Travel Restrictions for Illinois

What is the cheapest month to fly to Illinois?

The cheapest ticket to Illinois found for each month in 2022 based on historical flight searches by Cheapflights users.
January
$177
February
$167
March
$222
April
$281
May
$280
June
$315
July
$287
August
$227
September
$195
October
$171
November
$186
December
$173
Currently, February is the cheapest month in which you can book a flight to Illinois. Flying to Illinois in June will prove the most costly. There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

When is the best time to fly to Illinois?

Average Chicago flight ticket prices and weather conditions for 2022 and 2023 by month.
LAS - CHI
Price
$165 - $318
CHI
Temperature
33.8 - 84.2 °F
CHI
Rainfall
0.67 - 4.29 inches

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

The best time to book flights to Illinois is 20 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.

Which day is cheapest to fly to Illinois?

At the moment, Friday is the most economical day to take a flight to Illinois. Monday is likely to be the most costly.

What time of day is cheapest to fly to Illinois?

To get the best value, try booking a flight in the evening when visiting Illinois. Generally the prices will increase for flights at noon as these tend to have higher demand.

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 center 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.

Popular Destinations in Illinois

What is the climate like in Illinois?

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 90s 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.

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 neighborhoods 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.

Find cheap flights to Illinois

What is the best way to travel 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.

Alternative, similarly priced destinations

See alternative destinations where airfare is generally forecast to be close to Illinois flight prices.
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Cheapest flights to USA

Not set on Illinois? See the cheapest flights to United States. Airfare prices updated on May 25, 2022.
Home Flights North America USA Cheap flights to Illinois, United States