| Ontario to Hagerstown (Maryland) | 2,220.60 mi (3,573.71 km) |
| Ontario to Haines City (Florida) | 2,157.51 mi (3,472.17 km) |
| Ontario to Halawa (Hawaii) | 2,597.00 mi (4,179.47 km) |
| Ontario to Half Moon Bay (California) | 359.82 mi (579.07 km) |
| Ontario to Halfway (Maryland) | 2,218.09 mi (3,569.68 km) |
| Ontario to Hallandale Beach (Florida) | 2,295.86 mi (3,694.82 km) |
| Ontario to Haltom City (Texas) | 1,173.73 mi (1,888.94 km) |
| Ontario to Ham Lake (Minnesota) | 1,502.97 mi (2,418.80 km) |
| Ontario to Hamilton (Ohio) | 1,856.20 mi (2,987.26 km) |
| Ontario to Hamilton Square (New Jersey) | 2,380.71 mi (3,831.39 km) |
| Ontario to Hammond (Indiana) | 1,714.77 mi (2,759.66 km) |
| Ontario to Hammond (Louisiana) | 1,599.98 mi (2,574.92 km) |
| Ontario to Hammonton (New Jersey) | 2,377.36 mi (3,825.99 km) |
| Ontario to Hampton (Virginia) | 2,309.83 mi (3,717.31 km) |
| Ontario to Hampton Bays (New York) | 2,489.37 mi (4,006.26 km) |
