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$63+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CHI
jun. 21 — jun. 281
sáb. 6/21
sáb. 6/28
1 adult, Economy
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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 Thursday and return on a Wednesday

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 junio 16, 2025.

Round-trip from

$123
(Southwest)

One-way from

$63
(Southwest)

Popular in

March

Cheapest in

September

Average price

$222

Good round-trip deal

$146 or less

Good one-way deal

$111 or less
From Boston Logan Intl to Chicago (CHI)
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One-way flight from Boston Logan Intl to Chicago (CHI)
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Highest demand for flights based on searches. 9% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Chicago (CHI).
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Price to beat on a one-way flight from Boston Logan Intl to Chicago (CHI).
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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 junio 16, 2025.

This Southwest deal was found by Cheapflights users on 6/16. 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.
mar. 7/16:50 pmBOS - MDW
Nonstop2h 45mSouthwest
sáb. 7/127:00 pmMDW - BOS
Nonstop2h 15mSouthwest
Deal found 6/16$123
This eDestinos deal was found by Cheapflights users on 6/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/306:15 amBOS - ORD
1 stop13h 29mSpirit Airlines
mié. 7/910:00 amORD - BOS
1 stop8h 30mSpirit Airlines
Deal found 6/14$124
This JetBlue deal was found by Cheapflights users on 6/13. 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.
vie. 9/57:00 amBOS - ORD
Nonstop2h 57mJetBlue
mar. 9/99:42 amORD - BOS
Nonstop2h 28mJetBlue
Deal found 6/13$125
This Southwest deal was found by Cheapflights users on 6/16. 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.
mar. 7/15:45 amBOS - ORD
1 stop6h 15mSouthwest
sáb. 7/124:45 pmORD - BOS
1 stop5h 55mSouthwest
Deal found 6/16$142
This United Airlines deal was found by Cheapflights users on 6/14. 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.
mar. 7/17:04 pmBOS - ORD
1 stop5h 33mUnited Airlines
vie. 7/43:48 pmORD - BOS
Nonstop2h 30mUnited Airlines
Deal found 6/14$143
This Delta deal was found by Cheapflights users on 6/16. 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.
lun. 6/307:20 amBOS - ORD
Nonstop2h 58mDelta
vie. 7/42:15 pmORD - BOS
Nonstop2h 39mDelta
Deal found 6/16$147
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/155:29 amBOS - ORD
Nonstop2h 56mAmerican Airlines
dom. 8/247:00 amORD - BOS
Nonstop2h 24mAmerican Airlines
Deal found 6/14$155
This Booking.com deal was found by Cheapflights users on 6/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/56:00 amBOS - ORD
1 stop14h 20mMultiple Airlines
mié. 7/910:00 amORD - BOS
1 stop8h 30mMultiple Airlines
Deal found 6/13$168
This Priceline deal was found by Cheapflights users on 6/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/309:40 amBOS - MDW
1 stop11h 37mFrontier
jue. 7/103:58 pmMDW - BOS
1 stop7h 40mFrontier
Deal found 6/14$200
This Frontier deal was found by Cheapflights users on 6/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/286:00 amBOS - ORD
1 stop14h 03mFrontier
lun. 7/148:27 pmORD - BOS
1 stop10h 32mFrontier
Deal found 6/14$200
This Mytrip deal was found by Cheapflights users on 6/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/2411:31 amBOS - MDW
1 stop20h 42mAllegiant Air
vie. 7/252:54 pmMDW - BOS
1 stop16h 21mAllegiant Air
Deal found 6/15$206
This Mytrip deal was found by Cheapflights users on 6/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/111:42 amBOS - RFD
1 stop23h 31mMultiple Airlines
dom. 8/39:21 amRFD - BOS
1 stop5h 22mMultiple Airlines
Deal found 6/14$214

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 junio 16, 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

mar. 7/1

6:50 pm-8:35 pm

Nonstop2h 45m

Chicago Midway

sáb. 7/12

7:00 pm-10:15 pm

Nonstop2h 15m

$123

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

lun. 6/30

6:15 am-6:44 pm

1 stop13h 29m

Chicago O'Hare Intl

mié. 7/9

10:00 am-7:30 pm

1 stop8h 30m

$124

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

vie. 9/5

7:00 am-8:57 am

Nonstop2h 57m

Chicago O'Hare Intl

lun. 9/8

9:42 am-1:10 pm

Nonstop2h 28m

$125

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

mar. 7/1

5:45 am-11:00 am

1 stop6h 15m

Chicago O'Hare Intl

sáb. 7/12

4:45 pm-11:40 pm

1 stop5h 55m

$142

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

mar. 7/1

7:04 pm-11:37 pm

1 stop5h 33m

Chicago O'Hare Intl

vie. 7/4

3:48 pm-7:18 pm

Nonstop2h 30m

$143

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

lun. 6/30

7:20 am-9:18 am

Nonstop2h 58m

Chicago O'Hare Intl

vie. 7/4

2:15 pm-5:54 pm

Nonstop2h 39m

$147

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

vie. 8/15

5:29 am-7:25 am

Nonstop2h 56m

Chicago O'Hare Intl

dom. 8/24

7:00 am-10:24 am

Nonstop2h 24m

$155

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

sáb. 7/5

6:00 am-7:20 pm

1 stop14h 20m

Chicago O'Hare Intl

mié. 7/9

10:00 am-11:03 pm

1 stop12h 03m

$168

BostonChicago

BOS - MDW

BOSMDW

Boston Logan Intl

lun. 6/30

9:40 am-8:17 pm

1 stop11h 37m

Chicago Midway

jue. 7/10

3:58 pm-12:38 am

1 stop7h 40m

$200

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

sáb. 6/28

6:00 am-7:03 pm

1 stop14h 03m

Chicago O'Hare Intl

lun. 7/14

8:27 pm-7:59 am

1 stop10h 32m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 32 results
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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
Airlines
United Airlines

United's Economy Plus offers extra legroom, perfect for comfort on short flights.


United's MileagePlus program allows pooling miles, useful for frequent flyers.

Read more about United Airlinesby Harriet Baskas
Southwest

Southwest offers two free checked bags, including oversized items like skis or golf clubs.


Southwest's Early Bird check-in provides priority boarding, ideal for business travelers.

Read more about Southwestby Marisa Garcia
Spirit Airlines

Spirit's Big Front Seats offer 11 extra inches of legroom, ideal for short flights.


Spirit's self-service bag drop saves time; print your boarding pass in advance to avoid fees.

Read more about Spirit Airlinesby Daniel Scheffler
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
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Marisa Garcia

Marisa Garcia

Expert on Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
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

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 June 13, 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, August is the cheapest month in which you can book a flight from Boston to Chicago (average of $245). Flying from Boston to Chicago in March is currently the most expensive (average of $321). 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 junio 16, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 26% on flights from Boston to Chicago by exploring options for tickets in the evening.

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 June 15, 2025.

Travelers seeking maximum savings on their Boston to Chicago flight should consider departing on Wednesday evenings 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 junio 16, 2025.

The most flights from BOS to CHI are scheduled on a Monday (85 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (64 on average).

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 junio 16, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Boston to Chicago have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,801 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,922 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 76 daily outbound flights to Chicago from 7 different airlines.

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

    Our cheapest airline available from Boston to Chicago is Southwest. Our recent data shows that you can find tickets from as low as $123 on this airline. Additional options worth looking into are Spirit Airlines and JetBlue, starting at $124 and $125 round-trip. You may be able to fly from Boston to Chicago for 46% 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 $63. United Airlines flights start at $63 while deals on Spirit Airlines start at $68 one-way.

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

    Most travelers choose Boston Logan Intl - Chicago O'Hare Intl, Boston Logan Intl - Chicago Midway or Boston Logan Intl - Chicago Greater Rockford when deciding on the best route 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: Avianca (93%), TAP AIR PORTUGAL (92%), Icelandair (91%).

  • 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 $574. The most popular route, (Boston Logan Intl - Chicago O'Hare Intl), can usually be booked for $122.

  • 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, August is the cheapest month in which you can book a flight from Boston to Chicago (average of $245). Flying from Boston to Chicago in March is currently the most expensive (average of $321). 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 Boston?

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

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Alternative routes for Boston to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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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 junio 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$39Average$107FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$79Average$202FlexibilityNo cancel feeOn-time62%
DeltaCheapest$93Average$310FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$97Average$234FlexibilityNo cancel feeOn-time69%
FrontierCheapest$100Average$120FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$126Average$304FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$137Average$255FlexibilityNo cancel feeOn-time71%

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