Flights
Insights
FAQs

Find and compare United Airlines flights to Illinois

1 adult
0 bags

Recent United Airlines flights to Illinois found by users

Cheap United Airlines Flight Deals to Illinois

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 8:00 amBOS-ORD
3h 00mnonstop
United Airlines Logo
11:00 am - 2:20 pmORD-BOS
2h 20mnonstop
$117United Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
United Airlines Logo
9:40 am - 11:40 amBOS-ORD
3h 00mnonstop
United Airlines Logo
9:19 am - 12:43 pmORD-BOS
2h 24mnonstop
$122United Airlines
Find Deal
Thu, Dec 11 - Sun, Dec 14
United Airlines Logo
6:00 am - 8:00 amBOS-ORD
3h 00mnonstop
United Airlines Logo
9:12 pm - 12:45 amORD-BOS
2h 33mnonstop
$124United Airlines
Find Deal
Thu, Dec 11 - Thu, Dec 18
United Airlines Logo
4:30 pm - 6:30 pmBOS-ORD
3h 00mnonstop
United Airlines Logo
7:30 am - 10:49 amORD-BOS
2h 19mnonstop
$127United Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
United Airlines Logo
6:00 am - 8:00 amBOS-ORD
3h 00mnonstop
United Airlines Logo
7:45 am - 11:07 amORD-BOS
2h 22mnonstop
$129United Airlines
Find Deal
Thu, Dec 11 - Thu, Dec 18
United Airlines Logo
4:15 pm - 6:10 pmBOS-ORD
2h 55mnonstop
United Airlines Logo
9:25 pm - 12:45 amORD-BOS
2h 20mnonstop
$132United Airlines
Find Deal
Sat, Nov 22 - Mon, Nov 24
United Airlines Logo
9:57 pm - 11:32 pmEWR-ORD
2h 35mnonstop
United Airlines Logo
4:25 pm - 7:48 pmORD-EWR
2h 23mnonstop
$137United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
11:15 am - 12:57 pmLGA-ORD
2h 42mnonstop
United Airlines Logo
5:00 pm - 8:07 pmORD-LGA
2h 07mnonstop
$137United Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 17
United Airlines Logo
9:40 am - 11:40 amBOS-ORD
3h 00mnonstop
United Airlines Logo
9:12 pm - 12:45 amORD-BOS
2h 33mnonstop
$137United Airlines
Find Deal
Tue, Dec 9 - Mon, Dec 22
United Airlines Logo
9:15 pm - 11:03 pmLGA-ORD
2h 48mnonstop
United Airlines Logo
12:10 pm - 3:23 pmORD-LGA
2h 13mnonstop
$138United Airlines
Find Deal
Wed, Dec 24 - Wed, Jan 21

United Airlines flights to Illinois at a glance

Best Price Found

$138

Fastest flight time

2h 08m

Direct flights

Every day

Airports in Illinois

1 airport
The best one-way flight to Illinois from United States in the past 72 hours is $138. The best round-trip flight deal from United States to Illinois found on momondo in the last 72 hours is $276.
Search Deals
The fastest flight from United States to Illinois takes 2h 08m
Search Deals
Direct flights go from United States to Illinois every day.
Search Deals
There is 1 airport near Illinois: Chicago O'Hare Intl (ORD)
Search Deals

Insights on United Airlines flights to Illinois

Data designed to help you find the right flight

What is the cheapest month to fly Economy Class to Illinois?

In general, April is the cheapest month to fly Economy Class from United States to Illinois. Due to it being the ‘off-season’ during this time, you can expect Economy Class flight prices to be around $347. If you aren’t able to travel during the month of April, then book Economy Class flights to Illinois from United States during September instead. Economy Class flights to Illinois in September, while not as cheap as those in April, still average around $350.

What is the cheapest day to depart on your Economy Class flight to Illinois?

The cheapest day to depart from United States to Illinois is on a Tuesday when prices can be found for as low as $197. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average Economy Class ticket price to Illinois on a Monday is $217.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $411 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from United States for as low as $343 on momondo.

What is the cheapest United States to Illinois flight route?

Fly from Denver Intl to Moline Quad-City for the best United States - Illinois flight prices

What cabin class options are available on United States to Illinois flights?

There are 4 cabin classes available to choose from on United States to Illinois flights.

Can stopping save me money on United States to Illinois flights?

No. A direct flight is the cheapest option for a flight between United States to Illinois.

Frequently asked questions about flights to Illinois with United Airlines

Is United Airlines generally cheaper than other airlines for flights to Illinois?

Lots of factors influence the price of a flight, whether that's with United Airlines or other airlines so it is best to search and compare before booking. The airline flying to Illinois with the cheapest average return price tends to be Allegiant Air.

Which other airlines fly to Illinois?

Aside from United Airlines, Southwest, Frontier and Alaska Airlines also fly to Illinois.

How much is a flight to Illinois with United Airlines?

The average price for a return flight is $453; with a one-way flight around $247.

Which airport do United Airlines flights arrive at for Illinois?

United Airlines flights tend to land at either Decatur Arpt Airport or Chicago O'Hare Intl Airport.

Which other airlines in the Star Alliance operate flights to Illinois?

Among Star Alliance carriers, only United Airlines currently provides flights to Illinois.

Browse thousands of different options on momondo for your next trip

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