Boston (BOS) – Chicago (ORD)
- Distance
- 1,395 km
- 867 mi · 753 nm
- Flight time
- 2 h 58 min / 2 h 25 min
- Average gate to gate: BOS → ORD / back
- Time difference
- 1 h
- CO2 per passenger
- 175 kg
- One way, economy, incl. RF (103 kg CO2 only)
- Passengers / year
- 1,886,038
- Aug 2025 – Jul 2026 · +7.1%
- Flights / week
- 289
- Both directions, average
- Seats filled
- 85%
- 2,228,961 seats a year
- Airlines nonstop
- 6
- UA, AA, DL
Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources
The way there
- Heading from BOS
- 274°
- Heading from ORD
- 83°
- Halfway point
- 42.48, -79.48
- Great-circle km
- 1,391 km (sphere, for EU261)
- In the air BOS → ORD
- 2 h 16 min
- In the air ORD → BOS
- 1 h 50 min
- Clocks
- Chicago is 1 h behind Boston
The estimate for a route without real times is 2 h 25 min; how it is worked out is on Sources.
Show as a table
| Month | Passengers |
|---|---|
| Aug 2025 | 188,909 |
| Sep 2025 | 176,373 |
| Oct 2025 | 195,947 |
| Nov 2025 | 144,239 |
| Dec 2025 | 125,546 |
| Jan 2026 | 95,746 |
| Feb 2026 | 93,482 |
| Mar 2026 | 127,987 |
| Apr 2026 | 150,331 |
| May 2026 | 185,229 |
| Jun 2026 | 192,951 |
| Jul 2026 | 209,298 |
Show as a table
| Month | Flights |
|---|---|
| Aug 2025 | 1,334 |
| Sep 2025 | 1,310 |
| Oct 2025 | 1,381 |
| Nov 2025 | 1,220 |
| Dec 2025 | 1,104 |
| Jan 2026 | 935 |
| Feb 2026 | 939 |
| Mar 2026 | 1,124 |
| Apr 2026 | 1,250 |
| May 2026 | 1,467 |
| Jun 2026 | 1,457 |
| Jul 2026 | 1,495 |
Airlines flying BOS–ORD nonstop
| Airline | Flights / week | Share of passengers |
|---|---|---|
| UAUnited Air Lines | 103 | 43% |
| AAAmerican Airlines | 80 | 30% |
| DLDelta Air Lines | 36 | 11% |
| B6JetBlue Airways | 20 | 6% |
| YXRepublic Airline | 33 | 6% |
| MQEnvoy Air | 16 | 3% |
Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources
Aircraft on this route
- Boeing 737-800 · 4,235 flights
- Embraer ERJ-175 · 2,541 flights
- A220-300 BD-500-1A11 · 2,075 flights
- Boeing 737-900ER · 1,581 flights
- Airbus Industrie A319 · 1,347 flights
- Boeing B737 Max 900 · 1,131 flights
- Airbus Industrie A321-200n · 1,019 flights
- Boeing B737 Max 800 · 685 flights
Also carried: 397 tonnes of freight and 214 tonnes of mail a year (passenger and cargo flights).
Punctuality
- On time
- 70.4%
- Arrived within 15 min of schedule
- Average delay
- 25 min
- Late arrivals count, early ones as 0
- Cancelled
- 3%
- Flights counted
- 15,505
- Aug 2025 – Jul 2026
| Airline | On time | Average delay |
|---|---|---|
| UAUnited Air Lines | 72.5% | 23 min |
| AAAmerican Airlines | 66.8% | 29 min |
| DLDelta Air Lines | 67.6% | 27 min |
| YXRepublic Airline | 70.8% | 24 min |
| B6JetBlue Airways | 71.2% | 25 min |
| MQEnvoy Air | 79.9% | 18 min |
Delay minutes by cause: airline 20% · aircraft arriving late 41% · air traffic system 34% · weather 4% · security 0%.
Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources
What passengers paid
- Average fare, Q1 2026
- $171
- One way, all cabins
- Average over a year
- $186
- Q2 2025 – Q1 2026
- Largest airline
- United Air Lines
- 42% of passengers · $176
- Lowest-fare airline
- American Airlines
- 35% of passengers · $162
History, not a price to book: what the average passenger paid per one-way trip in each quarter (Q2 2025 $194 · Q3 2025 $180 · Q4 2025 $193 · Q1 2026 $171).
Fare outlook, Q1 2027: about $174, likely $155–$199
The average fare paid we expect a year after Q1 2026, the newest DOT quarter. On this route, past forecasts made this way fell inside the range 76% of the time over 21 quarters (median error 8.9%). An estimate from US DOT data: not a price you can book, not a guarantee, not advice on when to buy. How the outlook works
Cheapest quarter on this route: Q1, typically 7% below the year's average (9 years of DOT data, without 2020–21).
U.S. DOT Consumer Airfare Report, Table 1a (airline ticket sample, US domestic airport pairs). Sources
Delay compensation (EU261 / UK261)
Measured by great-circle distance: 1,391 km.
Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).
Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.
Every airport pair between Boston and Chicago
Kilometres. Linked numbers have a page of their own. All Chicago airports
More routes from BOS
More routes from ORD
| Route | Distance | Passengers / year |
|---|---|---|
| ORD → LGA | 1,180 km | 2,736,902 |
| ORD → LAX | 2,808 km | 2,332,419 |
| ORD → SFO | 2,971 km | 1,976,484 |
| ORD → DEN | 1,430 km | 1,974,190 |
| ORD → MCO | 1,617 km | 1,924,694 |
| ORD → DFW | 1,290 km | 1,916,312 |
| ORD → EWR | 1,157 km | 1,731,402 |
| ORD → IAH | 1,489 km | 1,711,056 |
| ORD → PHX | 2,317 km | 1,706,053 |
| ORD → SEA | 2,769 km | 1,622,991 |