How does KAYAK find such low prices on flights from Illinois to ?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to . Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to ?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to ?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to ?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$67 CHEAP FLIGHTS from Illinois to Boston

BOS

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$133

Overall average: $247

JetBlue

Tue 2/17Mon 2/23

ORD - BOS • Non-stop

Cheapest one-way

$67

Typical prices: $106-$233

JetBlue

Wed 2/11

ORD - BOS • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip $[0, preposition:'to ']$[0,article:'to ']$[0, place:'to']!

Flight Deals

Cheap Flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from ']$[1, preposition:'to ']$[1, article:'to ']$[1, place:'to']

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals $[0,preposition:'from ']$[0,article:'from ']$[0,place:'from'] $[1,preposition:'to '] $[1,article:'to ']$[1,place:'to']

Tue, Feb 17 - Mon, Feb 23

10:00 am - 1:20 pm

ORD

BOS

2h 20mnonstop

7:00 am - 9:10 am

BOS

ORD

3h 10mnonstop

$133JetBlue

Wed, Feb 18 - Sun, Feb 22

10:00 am - 1:20 pm

ORD

BOS

2h 20mnonstop

7:00 am - 9:10 am

BOS

ORD

3h 10mnonstop

$134JetBlue

Tue, Feb 17 - Thu, Feb 19

6:35 pm - 9:50 pm

MDW

BOS

2h 15mnonstop

5:20 am - 7:10 am

BOS

MDW

2h 50mnonstop

$135Southwest

Wed, Mar 4 - Sun, Mar 8

2:00 pm - 5:10 pm

MDW

BOS

2h 10mnonstop

7:05 am - 9:00 am

BOS

MDW

2h 55mnonstop

$137Southwest

Thu, Apr 9 - Mon, Apr 13

7:05 am - 10:39 am

ORD

BOS

2h 34mnonstop

7:40 pm - 9:50 pm

BOS

ORD

3h 10mnonstop

$137American Airlines

Thu, Mar 12 - Wed, Mar 18

6:20 pm - 9:53 pm

ORD

BOS

2h 33mnonstop

5:45 am - 5:15 pm

BOS

ORD

12h 30m

1 stop

$138Multiple Airlines

Fri, Feb 27 - Wed, Mar 4

4:42 pm - 1:13 am

ORD

BOS

7h 31m

1 stop

7:00 am - 9:10 am

BOS

ORD

3h 10mnonstop

$139Multiple Airlines

Mon, Mar 2 - Thu, Mar 5

7:30 am - 10:49 am

ORD

BOS

2h 19mnonstop

6:00 am - 8:00 am

BOS

ORD

3h 00mnonstop

$142United Airlines

Wed, Apr 22 - Wed, Apr 29

6:05 am - 4:45 pm

CMI

BOS

9h 40m

1 stop

6:30 am - 6:27 pm

BOS

CMI

12h 57m

1 stop

$264American Airlines

Sat, Jun 6 - Sat, Jun 13

5:38 pm - 12:59 am

PIA

BOS

6h 21m

1 stop

6:00 am - 10:01 am

BOS

PIA

5h 01m

1 stop

$285United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$67

Best time to beat the crowds with an average 9% drop in price.

Most popular time to fly with an average 5% increase in price.

Flight from Chicago O'Hare Airport to Boston

How does KAYAK find such low prices on flights from Illinois to ?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to .
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to ?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to ?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to ?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Hampton Beach

Hampton

Waltham

Warwick

Wells

Plymouth

Everett

Middletown

Gloucester

Concord

Woburn

York Beach

Revere

Brookline

Burlington

West Yarmouth

Danvers

South Portland

Braintree

Quincy

Everything you need to know for your flight $[0, preposition:'to ']$[0, article:'to ']$[0, place:'to']

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Information on the airport you'll fly into $[0, preposition:'in ']$[0, article:'in ']$[0, place:'in']

Boston (BOS)

BOS

$67 Find Cheap Flights from Illinois to Boston

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

Everything you should know

Cheap Flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from ']$[1, preposition:'to ']$[1, article:'to ']$[1, place:'to']

Recent round-trip flight deals $[0,preposition:'from ']$[0,article:'from ']$[0,place:'from'] $[1,preposition:'to '] $[1,article:'to ']$[1,place:'to']

Recent one-way flight deals $[0,preposition:'from ']$[0,article:'from']$[0,place:'from'] $[1,preposition:'to '] $[1,article:'to ']$[1,place:'to']

Recent last minute flight deals $[0,preposition:'from ']$[0,article:'from']$[0,place:'from'] $[1,preposition:'to '] $[1,article:'to ']$[1,place:'to']

Recent direct flight deals $[0,preposition:'from ']$[0,article:'from']$[0,place:'from'] $[1,preposition:'to '] $[1,article:'to ']$[1,place:'to']

Good to know

FAQs for booking flights from Illinois to

How does KAYAK find such low prices on flights from Illinois to ?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to .

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to ?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to ?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to ?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place $[0, preposition:'near ']$[0, article:'near ']$[0, place:'near']?

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