Miles Calculator
Chicago to Boston distance: ORD to BOS
Distances calculated on the WGS-84 model of the Earth
The great-circle distance from Chicago (ORD) to Boston (BOS) is 867 miles (1,395 km). A nonstop flight would take about 2h 10m in the air. The distance is the same in both directions, so Boston to Chicago is also 867 miles.
At a glance
| From | Chicago O'Hare International Airport, United States |
|---|---|
| To | Boston Logan International Airport, United States |
| Distance | 867 miles, 1,395 km, or 753 nautical miles |
| Return trip | 1,733 miles (2,789 km) |
| Estimated flying time | About 2h 10m nonstop, each way |
On a flat map the shortest path looks slightly curved, because it follows the curve of the Earth. Flying times are estimates for a nonstop flight; schedules vary by airline and direction, mainly because of the jet stream, and not every route has a nonstop service.
Miles you could earn on this route
Programmes that reward distance credit a percentage of the miles flown, set by the fare you book. Here's what that means on ORD–BOS:
| Earning rate | Typical fares | One way | Return |
|---|---|---|---|
| 25% | Cheapest economy on some airlines | 217 | 434 |
| 50% | Discounted economy | 433 | 866 |
| 75% | Standard economy | 650 | 1,300 |
| 100% | Flexible economy, many premium economy fares | 867 | 1,734 |
| 125% | Premium economy, discounted business | 1,083 | 2,166 |
| 150% | Business | 1,300 | 2,600 |
| 200% | First | 1,733 | 3,466 |
Which rate applies depends on the airline and programme; see how to find your fare class. Programmes that reward spending instead, such as United, Delta, American Airlines and British Airways, give the same miles whatever the distance, based on the fare you pay.
How far a return trip gets you towards status
Credited at 100% of the distance, a typical rate for flexible economy, one return trip on this route earns 1,734 miles towards status. Against the targets for mid-tier alliance status in some distance-based programmes:
| Programme and tier | Alliance status | Target (12 months) | One return trip | Return trips needed |
|---|---|---|---|---|
| KrisFlyer Elite Gold | Star Alliance Gold | 50,000 | 3% | 29 |
| Turkish Airlines Elite | Star Alliance Gold | 40,000 | 4% | 24 |
| Royal Jordanian Gold Sparrow | oneworld Sapphire | 40,000 | 4% | 24 |
| Vietnam Airlines Platinum | SkyTeam Elite Plus | 50,000 | 3% | 29 |
Real earning varies by fare and airline, and some programmes also have minimums per flight or count flights instead. For your exact fare and tier, use the status calculator.
Why an airline may show a different distance
This figure is the shortest path between the two airports on the WGS-84 model of the Earth. Some programmes use industry distance tables between cities or round their figures, so the distance they credit can differ by a few miles.