Chicago

$64+ Cheap flights from Boston (BOS) to Chicago (CHI)

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CHI
Nov 9 — Nov 161
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Find cheap flights from Boston to Chicago with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Boston Logan Intl to Chicago are usually found in September or January, booked 90 days in advance, depart on a Friday or Wednesday and return on a Thursday

Find flight deals from Boston to Chicago

Cheapest flights from Boston to Chicago
Explore the most affordable flight options available from Boston to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amBOS - MDW
1 stop13h 04mFrontier
Tue 12/98:00 amMDW - BOS
1 stop15h 01mFrontier
Deal found 10/8$121
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amBOS - MDW
1 stop13h 04mFrontier
Mon 12/86:00 amMDW - BOS
1 stop17h 44mFrontier
Deal found 10/8$123
This Southwest deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/255:20 amBOS - MDW
Nonstop2h 40mSouthwest
Sat 11/13:50 pmMDW - BOS
1 stop4h 45mSouthwest
Deal found 10/7$127
This Delta deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:30 amBOS - ORD
Nonstop3h 05mDelta
Tue 11/1810:35 amORD - BOS
Nonstop2h 28mDelta
Deal found 10/8$127
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amBOS - MDW
1 stop13h 04mFrontier
Sun 12/77:47 pmMDW - BOS
1 stop27h 57mFrontier
Deal found 10/8$128
This Kissandfly.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:09 amBOS - ORD
Nonstop3h 13mJetBlue
Sun 10/267:15 amORD - BOS
Nonstop2h 19mJetBlue
Deal found 10/9$129
This Kiwi.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/293:00 pmBOS - ORD
1 stop11h 03mMultiple Airlines
Thu 10/307:06 pmORD - BOS
1 stop23h 10mMultiple Airlines
Deal found 10/9$130
This Southwest deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:15 amBOS - MDW
Nonstop2h 40mSouthwest
Wed 10/291:25 pmMDW - BOS
2 stops6h 45mSouthwest
Deal found 10/9$132
This JetBlue deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:09 amBOS - ORD
Nonstop3h 13mJetBlue
Fri 10/316:45 amORD - BOS
1 stop7h 15mJetBlue
Deal found 10/8$132
This Southwest deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/229:10 amBOS - MDW
1 stop10h 20mSouthwest
Thu 10/236:05 amMDW - BOS
Nonstop2h 15mSouthwest
Deal found 10/9$133
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/243:17 pmBOS - ORD
Nonstop2h 50mUnited Airlines
Mon 10/276:15 amORD - BOS
Nonstop2h 15mUnited Airlines
Deal found 10/8$133
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:40 amBOS - ORD
Nonstop3h 00mUnited Airlines
Fri 10/3110:48 amORD - BOS
Nonstop2h 21mUnited Airlines
Deal found 10/8$134

Cheap flight deals from Boston to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$121
(Kiwi.com)

One-way from

$64
(United Airlines)

Popular in

March

Cheapest in

September

Average price

$252

Good round-trip deal

$206 or less

Good one-way deal

$128 or less
Provider with most accurate pricing for Boston Logan Intl-Chicago (CHI) flight deals.
Provider most trusted by Cheapflights users for Boston Logan Intl-Chicago (CHI) flights.
From Boston Logan Intl to Chicago (CHI)
One-way flight from Boston Logan Intl to Chicago (CHI)
Highest demand for flights based on searches. 6% potential increase in price ($16 potential increase over avg. RT price).
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Boston Logan Intl to Chicago (CHI).
Price to beat on a one-way flight from Boston Logan Intl to Chicago (CHI).

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Chicago that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 10, 2025.
Use the filters below to find and compare flights from Boston to Chicago that are best for you.

Fly from

Boston

Fly to

Chicago

Route

Depart

Return

Price

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Fri 10/31

2:05 pm-6:50 pm

1 stop5h 45m

Chicago Midway

Sat 11/1

5:35 pm-8:50 pm

Nonstop2h 15m

$127

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Sat 11/1

11:45 am-1:40 pm

Nonstop2h 55m

Chicago O'Hare Intl

Sat 11/8

10:25 am-1:55 pm

Nonstop2h 30m

$127

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Tue 11/4

7:30 pm-9:19 pm

Nonstop2h 49m

Chicago O'Hare Intl

Sat 11/8

10:25 am-1:55 pm

Nonstop2h 30m

$127

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Wed 11/5

7:20 am-9:22 am

Nonstop3h 02m

Chicago O'Hare Intl

Sat 11/8

10:25 am-1:55 pm

Nonstop2h 30m

$127

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Wed 10/29

11:55 am-7:10 pm

2 stops8h 15m

Chicago Midway

Thu 10/30

6:05 am-9:20 am

Nonstop2h 15m

$132

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Tue 10/21

9:53 am-11:43 am

Nonstop2h 50m

Chicago O'Hare Intl

Mon 10/27

9:25 pm-12:45 am

Nonstop2h 20m

$133

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Wed 10/22

9:10 am-6:30 pm

1 stop10h 20m

Chicago Midway

Thu 10/23

6:05 am-9:20 am

Nonstop2h 15m

$133

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Mon 1/5

6:23 pm-8:25 pm

Nonstop3h 02m

Chicago O'Hare Intl

Wed 1/7

7:30 am-10:52 am

Nonstop2h 22m

$137

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

Wed 10/29

5:40 pm-10:05 pm

1 stop5h 25m

Chicago Midway

Fri 10/31

8:00 am-3:55 pm

1 stop6h 55m

$137

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Thu 10/23

7:20 am-9:22 am

Nonstop3h 02m

Chicago O'Hare Intl

Sat 10/25

3:50 pm-7:23 pm

Nonstop2h 33m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/7

Showing 1-10 of 57 results
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Compare providers for flights from Boston to Chicago

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Chicago in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Chicago

How far ahead should I book a flight from Boston to Chicago?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Chicago. Price data was last updated on October 3, 2025.

The best time to book flights from Boston to Chicago is 90 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.

What is the cheapest month to book a flight from Boston to Chicago?

Currently, November is the cheapest month in which you can book a flight from Boston to Chicago (average of $86). Flying from Boston to Chicago in December is currently the most expensive (average of $125). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to CHI?

Find hourly flight availability from Boston to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 10, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 17% on flights from Boston to Chicago by exploring options for tickets in the morning.

What is the cheapest day to fly from Boston to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Boston to Chicago. Price data was last updated on October 5, 2025.

Travelers seeking maximum savings on their Boston to Chicago flight should consider departing on Thursday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Chicago

Explore weekly flight availability from Boston to Chicago. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 10, 2025.

The most flights from BOS to CHI are scheduled on a Thursday (83 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (46 on average).

How much does it cost to fly round-trip from Boston to Chicago?

What’s the top layover airport for flights from Boston to Chicago?

Share of 1-stop round-trip flights from Boston to Chicago chosen by Cheapflights users in the past 12 months, using the same layover each way.

Tampa (TPA) – chosen by Cheapflights users on 67% of 1-stop itineraries from Boston to Chicago on Cheapflights.

What’s the cheapest layover airport for flights from Boston to Chicago?

Average round-trip fare for 1-stop flights from Boston to Chicago, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Tampa (TPA) is the most affordable 1-stop option, with an average round-trip price of $126.

What’s the fastest layover option from Boston to Chicago?

Shortest average travel time for 1-stop one-way flights from Boston to Chicago, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Fort Lauderdale (FLL) have the shortest average one-way travel time for 1-stop routes: 10h 26m.

Which airport typically offers the quickest layover for flights from Boston to Chicago?

Average layover duration for 1-stop one-way flights from Boston to Chicago, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Fort Lauderdale (FLL) offer the fastest connection on this route, with an average layover time of 6h 16m.

The best insider tips for Boston to Chicago flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to Chicago trip
Airports
BOS

Use the FlyLogan App for real-time flight updates and pre-order food through BOS2GO to save time at the airport.

Read more about BOSby Paul Rubio
ORD

Use the 'L' train from ORD to downtown Chicago to avoid traffic and save time during peak hours.

Read more about ORDby Ramsey Qubein
MDW

Take the Orange Line from MDW to reach downtown Chicago in under 30 minutes, offering a convenient and cost-effective option.

Read more about MDWby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD and MDW

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated October 10, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Boston to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
8.0
Very good

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Boston to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Boston to Chicago?

    Located just 2.6 mi from the city center, Boston Logan Intl is the airport most travelers will use when flying to Chicago from Boston. Booking flights from Logan Intl (BOS) to Chicago should be relatively easy as there are 63 daily outbound flights to Chicago from 7 different airlines.

  • How long is the flight from Boston to Chicago?

    For as low as $133, Southwest can have you in Chicago from Boston in 2h 50m. Airlines will cover a distance of 864 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Boston to Chicago round-trip?

    Our cheapest airline available from Boston to Chicago is Spirit Airlines. Our recent data shows that you can find tickets from as low as $69 on this airline. Additional options worth looking into are JetBlue and Frontier, starting at $85 and $100 round-trip. You may be able to fly from Boston to Chicago for 71% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boston to Chicago one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $69. Delta flights start at $69 while deals on JetBlue start at $69 one-way.

  • What are the most popular routes from Boston to Chicago?

  • What are the most reliable airlines from Boston to Chicago?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to Chicago on time: Icelandair (90%), Avianca (87%), TAP AIR PORTUGAL (87%).

  • What are the cheapest flights from Boston to Chicago?

    The cheapest flight price from Boston to Chicago is $68. On average you can expect to pay $694. The most popular route, (Boston Logan Intl - Chicago O'Hare Intl), can usually be booked for $113.

  • Can I find deals for flights from Boston to Chicago that include hotel bookings?

    Yes. In addition to deals on Boston to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Chicago.

  • Can I find deals for business class flights from Boston to Chicago?

    Yes. Cheapflights offers flight deals from Boston to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Chicago?

    Currently, November is the cheapest month in which you can book a flight from Boston to Chicago (average of $86). Flying from Boston to Chicago in December is currently the most expensive (average of $125). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Lansing
Hammond
Porter
Benton Harbor
Chesterton

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Top 7 airlines flying from Boston to Chicago

Discover the top 7 airlines that operate flights from Boston to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$69Average$245FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$85Average$197FlexibilityNo cancel feeOn-time62%
FrontierCheapest$100Average$106FlexibilityNo cancel feeOn-time62%
DeltaCheapest$112Average$304FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$117Average$239FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$135Average$279FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$136Average$257FlexibilityNo cancel feeOn-time71%

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