United's Economy Plus offers extra legroom and priority boarding, enhancing comfort on domestic flights.
Prepay for checked bags on United to save money. Avoid fees by using MileagePlus Premier benefits.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $120 (Flysmarter) |
One-way from | $63 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $288 |
Good round-trip deal | $229 or less |
Good one-way deal | $138 or less |
Fly from
Fly to
Route
Depart
Return
Price
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
jue. 12/25
4:31 pm-6:46 pm
Nonstop3h 15m
Chicago O'Hare Intl
lun. 12/29
7:41 pm-11:10 pm
Nonstop2h 29m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
jue. 2/26
5:27 am-6:52 pm
1 stop14h 25m
Chicago O'Hare Intl
mar. 3/3
5:15 am-5:15 pm
1 stop11h 00m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
vie. 1/30
4:16 pm-6:16 pm
Nonstop3h 00m
Chicago O'Hare Intl
dom. 2/1
7:30 am-10:52 am
Nonstop2h 22m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
sáb. 1/24
3:35 pm-5:43 pm
Nonstop3h 08m
Chicago O'Hare Intl
dom. 1/25
7:45 am-11:10 am
Nonstop2h 25m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
mar. 2/3
3:35 pm-5:43 pm
Nonstop3h 08m
Chicago O'Hare Intl
vie. 2/6
7:45 am-11:10 am
Nonstop2h 25m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
lun. 2/23
7:00 am-9:10 am
Nonstop3h 10m
Chicago O'Hare Intl
sáb. 3/7
10:00 am-1:23 pm
Nonstop2h 23m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
mar. 1/27
3:35 pm-5:43 pm
Nonstop3h 08m
Chicago O'Hare Intl
mar. 2/3
7:45 am-11:10 am
Nonstop2h 25m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
mié. 1/7
3:35 pm-5:43 pm
Nonstop3h 08m
Chicago O'Hare Intl
vie. 1/16
7:45 am-11:10 am
Nonstop2h 25m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
mié. 3/25
7:55 am-10:05 am
Nonstop3h 10m
Chicago O'Hare Intl
dom. 3/29
6:22 pm-9:55 pm
Nonstop2h 33m
BostonChicago
BOS - ORD
BOSORD
Boston Logan Intl
mié. 3/11
7:00 am-9:09 am
Nonstop3h 09m
Chicago O'Hare Intl
dom. 3/15
6:22 pm-9:55 pm
Nonstop2h 33m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
To ensure you get the cheapest price possible for a flight from Boston to Chicago O'Hare Intl Airport, you should look to book at least 62 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, April is the cheapest month in which you can book a flight from Boston to Chicago O'Hare Intl Airport (average of $89). Flying from Boston to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $134). 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.
It’s optimal to fly from Boston to Chicago O'Hare Intl Airport in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their Boston to Chicago O'Hare Intl Airport flight should consider departing on Monday 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.
About 13% of weekly flights between Boston and Chicago have experienced delays in the past year, with the average delay time being 168 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.
Food
Boarding
Crew
Comfort
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Food
Boarding
Crew
Comfort
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Food
Boarding
Crew
Comfort
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Food
Boarding
Crew
Comfort
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Food
Boarding
Crew
Comfort
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Food
Boarding
Crew
Comfort
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$75 | Average$187 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$308 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$112 | Average$261 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$123 | Average$270 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$128 | Average$255 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$156 | Average$196 | FlexibilityNo cancel fee | On-time63% |