Find flights
When to book
Airlines
Travel Guide

Cheap flights to Illinois

WAS — ORD
24 Mar — 31 Mar1
1 adult
Sun 24-3
Sun 31-3

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 16%Compare Cheapflights against other travel sites with one search.

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

Customise 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 203,602 searches and data was last updated on 19 March 2024.

Popular in

August

Cheapest in

October

Average price

S$ 1,871

Return from

S$ 1,226

One-way from

S$ 823
High demand for flights, 8% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for return flights in March 2024
From Singapore Changi to Chicago
One-way flight from Singapore Changi (SIN) to Illinois

Find flights to Illinois

Browse one-way and return flights deals to Illinois on Cheapflights. Flight deals are based on user searches and were last updated on 19 March 2024
Explore Illinois

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 S$ 0 while a return flight costs S$ 0. Price data was last updated on 17 March 2024.

Currently, January is the cheapest month in which you can book a flight to Illinois (average of S$ 0). Flying to Illinois in May will prove the most costly (average of S$ 1,226). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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 return flight to Illinois. Price data was last updated on 28 January 2024.
The best time to book flights to Illinois is 44 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 19 March 2024.
Read reviews from past customers who have flown Japan Airlines, Cathay Pacific and Delta to Illinois. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.6
Very Good
1,244 reviews

Food

8.2

Boarding

8.6

Overall

8.6

Crew

8.8

Entertainment

8.2

Comfort

8.4

Reviews

1 / 10

I went to airport at 8;30 pm really to check in but they didn’t let me go they said my ticket had problems …I confused asked them check out to office help me please but they said they can’t ! beg them help😭They told me if want to fly now need buy another ticket $ 3585 or want go tomorrow $1889 OMG it’s terrible I cried and asked them could you help me find another ticket cheaper I need to go back home on time he stand up said NO if you want cheap go buy another plane ✈️ I did ! I bought ticket of American Airlines is $980 ! I came home now ! Please 🙏 check out about my problems it’s terrible for travelers! I am so tired and very disappointed ! Own business in USA 🇺🇸 I understand how to take care of customer services it’s very important ! Please 🙏 check out on them be fair for customer satisfaction ! By that time I spoke with them Vietnamese language and English too but they try to making money 💴 from me it’s very poor! So sad 😭 for vacation! Please 🙏

8.6
Very Good
1,244 reviews
8.6
Very Good
1,244 reviews

Food

8.2

Boarding

8.6

Overall

8.6

Crew

8.8

Entertainment

8.2

Comfort

8.4

Reviews

1 / 10

I went to airport at 8;30 pm really to check in but they didn’t let me go they said my ticket had problems …I confused asked them check out to office help me please but they said they can’t ! beg them help😭They told me if want to fly now need buy another ticket $ 3585 or want go tomorrow $1889 OMG it’s terrible I cried and asked them could you help me find another ticket cheaper I need to go back home on time he stand up said NO if you want cheap go buy another plane ✈️ I did ! I bought ticket of American Airlines is $980 ! I came home now ! Please 🙏 check out about my problems it’s terrible for travelers! I am so tired and very disappointed ! Own business in USA 🇺🇸 I understand how to take care of customer services it’s very important ! Please 🙏 check out on them be fair for customer satisfaction ! By that time I spoke with them Vietnamese language and English too but they try to making money 💴 from me it’s very poor! So sad 😭 for vacation! Please 🙏

8.5
Very Good
1,005 reviews
8.6
Very Good
1,244 reviews

Food

8.2

Boarding

8.6

Overall

8.6

Crew

8.8

Entertainment

8.2

Comfort

8.4

Reviews

1 / 10

I went to airport at 8;30 pm really to check in but they didn’t let me go they said my ticket had problems …I confused asked them check out to office help me please but they said they can’t ! beg them help😭They told me if want to fly now need buy another ticket $ 3585 or want go tomorrow $1889 OMG it’s terrible I cried and asked them could you help me find another ticket cheaper I need to go back home on time he stand up said NO if you want cheap go buy another plane ✈️ I did ! I bought ticket of American Airlines is $980 ! I came home now ! Please 🙏 check out about my problems it’s terrible for travelers! I am so tired and very disappointed ! Own business in USA 🇺🇸 I understand how to take care of customer services it’s very important ! Please 🙏 check out on them be fair for customer satisfaction ! By that time I spoke with them Vietnamese language and English too but they try to making money 💴 from me it’s very poor! So sad 😭 for vacation! Please 🙏

8.4
Very Good
1,477 reviews
8.6
Very Good
1,244 reviews

Food

8.2

Boarding

8.6

Overall

8.6

Crew

8.8

Entertainment

8.2

Comfort

8.4

Reviews

1 / 10

I went to airport at 8;30 pm really to check in but they didn’t let me go they said my ticket had problems …I confused asked them check out to office help me please but they said they can’t ! beg them help😭They told me if want to fly now need buy another ticket $ 3585 or want go tomorrow $1889 OMG it’s terrible I cried and asked them could you help me find another ticket cheaper I need to go back home on time he stand up said NO if you want cheap go buy another plane ✈️ I did ! I bought ticket of American Airlines is $980 ! I came home now ! Please 🙏 check out about my problems it’s terrible for travelers! I am so tired and very disappointed ! Own business in USA 🇺🇸 I understand how to take care of customer services it’s very important ! Please 🙏 check out on them be fair for customer satisfaction ! By that time I spoke with them Vietnamese language and English too but they try to making money 💴 from me it’s very poor! So sad 😭 for vacation! Please 🙏

8.4
Very Good
1,636 reviews
8.6
Very Good
1,244 reviews

Food

8.2

Boarding

8.6

Overall

8.6

Crew

8.8

Entertainment

8.2

Comfort

8.4

Reviews

1 / 10

I went to airport at 8;30 pm really to check in but they didn’t let me go they said my ticket had problems …I confused asked them check out to office help me please but they said they can’t ! beg them help😭They told me if want to fly now need buy another ticket $ 3585 or want go tomorrow $1889 OMG it’s terrible I cried and asked them could you help me find another ticket cheaper I need to go back home on time he stand up said NO if you want cheap go buy another plane ✈️ I did ! I bought ticket of American Airlines is $980 ! I came home now ! Please 🙏 check out about my problems it’s terrible for travelers! I am so tired and very disappointed ! Own business in USA 🇺🇸 I understand how to take care of customer services it’s very important ! Please 🙏 check out on them be fair for customer satisfaction ! By that time I spoke with them Vietnamese language and English too but they try to making money 💴 from me it’s very poor! So sad 😭 for vacation! Please 🙏

8.3
Very Good
1,520 reviews
8.6
Very Good
1,244 reviews

Food

8.2

Boarding

8.6

Overall

8.6

Crew

8.8

Entertainment

8.2

Comfort

8.4

Reviews

1 / 10

I went to airport at 8;30 pm really to check in but they didn’t let me go they said my ticket had problems …I confused asked them check out to office help me please but they said they can’t ! beg them help😭They told me if want to fly now need buy another ticket $ 3585 or want go tomorrow $1889 OMG it’s terrible I cried and asked them could you help me find another ticket cheaper I need to go back home on time he stand up said NO if you want cheap go buy another plane ✈️ I did ! I bought ticket of American Airlines is $980 ! I came home now ! Please 🙏 check out about my problems it’s terrible for travelers! I am so tired and very disappointed ! Own business in USA 🇺🇸 I understand how to take care of customer services it’s very important ! Please 🙏 check out on them be fair for customer satisfaction ! By that time I spoke with them Vietnamese language and English too but they try to making money 💴 from me it’s very poor! So sad 😭 for vacation! Please 🙏

Sitting along the banks of the Mississippi River and Lake Michigan, Illinois’s accessible location has for centuries made it an important hub. Historically emigrants from Mexico, Ireland and Poland would make the long journey over in search of work and a new home. Abraham Lincoln was among those who called Illinois home and the state honoured him by naming the small city of Lincoln after him – beforehe became president.

Most travellers booking flights to Illinois would probably pick Chicago as their city of choice for its renowned restaurant scene and shopping but there’s so much more to see in including 6,900 kilometres of shoreline and more than 50 state parks, making it one of the most scenic states in the US.

Illinois climate

Illinois’s winters are very cold and long with snow and icy winds from late November through to April. Summers, especially July and August, the weather tends to be hot and humid. The best times to visit is when the weather is perfect, in spring and autumn; tornado season can occur anytime between the months of March and May. Chicago’s summers are humid with highs of 30 degrees (Celsius) or more and its winters are bitterly cold.

Getting around Illinois

Public transportation is reliable and taxis are easy to find. Driving is not recommended because of heavy traffic and parking is almost impossible to find. The El, a system operated by The Chicago Transit Authority consists of elevated trains running 24 hours a day. During the summer rush hour a River Bus is available.

What is good to know if travelling to Illinois?

  • Chicago has a wealth of things to see and do. The best view of the city can be found at 1,450 feet from the top of North America’s tallest building – the Sears Tower. Head to the 103rd floor to the Skydeck where you can see the entire city laid out.  The Hancock Building is also well worth a visit and offers stunning city views from its observation deck or cocktail bar.
  • Don’t miss a trip to the Anderson Japanese Gardens in Rockford. Set on twelve acres the gardens are adorned with Japanese maples, magnolias, and rhododendrons and have several ponds and waterfalls with Japanese bronze structures surrounding them. There’s also an authentic tea house and contemporary “Garden of Reflection”.  
  • Visit the preserved Frank Lloyd Wright Museum on Chicago Avenue in Oak Park where the famed architect spent 20 years of his career and designed 130 of his masterpieces.  Wright lived here until 1909.
  • One of the most visited attractions in Chicago is the Art Institute of Chicago. Art lovers – well any visitor – shouldn’t miss a trip to the museum, it’s remarkable. The gargantuan building houses more than 250,000 works of art from all over the world including ancient Egyptian, Japanese, Korean, Greek and Roman relics. One of its highlights is the anthology of Impressionist art which has an impressive collection by Monet, Pablo Picasso and Henri Matisse to name a few.
  • Anyone interested in the lives of the Amish people should head to central Illinois where a welcoming group of Amish villages are set up. Take a tour of the community in the Illinois Amish Interpretative Centre in Arcola, visit a working farm and watch how supper is prepared and enjoyed in a family home.
  • When is the best time to fly to Illinois?

    Peak Season: Winter is peak season in Illinois for skiing and snowmobiling. In summer many different festivals take place in Chicago’s parks and neighbourhoods almost every weekend, making it difficult to find a cheap Illinois flight. Off Season: The best month to book a cheap Illinois flight is September, which is also the mildest month. Autumn is visually the prettiest time to visit when the temperature is still mild and the foliage is changing. The quietest months in Chicago are from January to March but they can also be the coldest and windiest.

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 favorite airline to Illinois. Flight routes are based on user searches made on Cheapflights and were last updated on 19 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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Illinois?

Deals for Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to Illinois?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Illinois.

Can Cheapflights find flights to Illinois with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights to Illinois flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights to Illinois become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Illinois today and book when you’re ready!