{"schema_version":1,"slug":"lhr-to-jnb","url":"https://flightdose.com/routes/lhr-to-jnb/","return_slug":"jnb-to-lhr","return_url":"https://flightdose.com/routes/jnb-to-lhr/","departure":{"iata":"LHR","icao":"EGLL","name":"London Heathrow Airport","city":"London","country":"United Kingdom","lat":51.4717,"lon":-0.4533,"url":"https://flightdose.com/airports/lhr/"},"arrival":{"iata":"JNB","icao":"FAOR","name":"O.R. Tambo International Airport","city":"Johannesburg","country":"South Africa","lat":-26.1383,"lon":28.2467,"url":"https://flightdose.com/airports/jnb/"},"distance_km":9075,"max_latitude":{"deg":51.5,"hemisphere":"N"},"standard_flight":{"altitude_ft":35000,"airborne_minutes":636,"airborne_minutes_source":"estimated","profile":{"climb":25,"cruise":594,"descent":17},"solar_month":"2026-08","dose_msv":0.02159,"dose_rate_usv_per_hour":2.04},"by_altitude":[{"altitude_ft":31000,"dose_msv":0.01619,"dose_rate_usv_per_hour":1.53},{"altitude_ft":33000,"dose_msv":0.01885,"dose_rate_usv_per_hour":1.78},{"altitude_ft":35000,"dose_msv":0.02159,"dose_rate_usv_per_hour":2.04},{"altitude_ft":37000,"dose_msv":0.02433,"dose_rate_usv_per_hour":2.3},{"altitude_ft":39000,"dose_msv":0.02699,"dose_rate_usv_per_hour":2.55},{"altitude_ft":41000,"dose_msv":0.02943,"dose_rate_usv_per_hour":2.78}],"series":{"granularity":"quarter","altitude_ft":35000,"airborne_minutes":636,"points":[{"month":"2016-01","dose_msv":0.02237},{"month":"2016-04","dose_msv":0.0226},{"month":"2016-07","dose_msv":0.02256},{"month":"2016-10","dose_msv":0.02283},{"month":"2017-01","dose_msv":0.02292},{"month":"2017-04","dose_msv":0.02312},{"month":"2017-07","dose_msv":0.02297},{"month":"2017-10","dose_msv":0.0229},{"month":"2018-01","dose_msv":0.02304},{"month":"2018-04","dose_msv":0.02324},{"month":"2018-07","dose_msv":0.0232},{"month":"2018-10","dose_msv":0.02335},{"month":"2019-01","dose_msv":0.02297},{"month":"2019-04","dose_msv":0.02333},{"month":"2019-07","dose_msv":0.02323},{"month":"2019-10","dose_msv":0.02333},{"month":"2020-01","dose_msv":0.02329},{"month":"2020-04","dose_msv":0.02336},{"month":"2020-07","dose_msv":0.02331},{"month":"2020-10","dose_msv":0.02331},{"month":"2021-01","dose_msv":0.02304},{"month":"2021-04","dose_msv":0.02334},{"month":"2021-07","dose_msv":0.02315},{"month":"2021-10","dose_msv":0.02318},{"month":"2022-01","dose_msv":0.02302},{"month":"2022-04","dose_msv":0.02293},{"month":"2022-07","dose_msv":0.02224},{"month":"2022-10","dose_msv":0.0225},{"month":"2023-01","dose_msv":0.02175},{"month":"2023-04","dose_msv":0.02185},{"month":"2023-07","dose_msv":0.02135},{"month":"2023-10","dose_msv":0.0214},{"month":"2024-01","dose_msv":0.0209},{"month":"2024-04","dose_msv":0.02114},{"month":"2024-07","dose_msv":0.02121},{"month":"2024-10","dose_msv":0.02005},{"month":"2025-01","dose_msv":0.02035},{"month":"2025-04","dose_msv":0.02037},{"month":"2025-07","dose_msv":0.02027},{"month":"2025-10","dose_msv":0.02049},{"month":"2026-01","dose_msv":0.01955},{"month":"2026-04","dose_msv":0.02064},{"month":"2026-07","dose_msv":0.02121},{"month":"2026-08","dose_msv":0.02159}]},"explorer":{"altitudes_ft":[31000,33000,35000,37000,39000,41000],"months":["2016-01","2017-01","2018-01","2019-01","2020-01","2021-01","2022-01","2023-01","2024-01","2025-01","2026-01","2026-08"],"dose_msv":[[0.01677,0.01718,0.01727,0.01722,0.01745,0.01727,0.01725,0.0163,0.01567,0.01526,0.01466,0.01619],[0.01953,0.02001,0.02011,0.02005,0.02033,0.02011,0.02009,0.01899,0.01825,0.01778,0.01708,0.01885],[0.02237,0.02292,0.02304,0.02297,0.02329,0.02304,0.02302,0.02175,0.0209,0.02035,0.01955,0.02159],[0.02523,0.02585,0.02598,0.02591,0.02627,0.02599,0.02596,0.02451,0.02355,0.02293,0.02202,0.02433],[0.028,0.0287,0.02885,0.02877,0.02917,0.02885,0.02882,0.0272,0.02612,0.02542,0.0244,0.02699],[0.03055,0.03133,0.03149,0.0314,0.03186,0.0315,0.03146,0.02966,0.02846,0.02768,0.02655,0.02943]]},"logged":null,"comparisons":[{"name":"Chest X-Ray","dose_msv":0.1,"flights_per_comparison":4.63},{"name":"Dental X-Ray","dose_msv":0.005,"flights_per_comparison":0.232},{"name":"Background Radiation (Daily)","dose_msv":0.008,"flights_per_comparison":0.371},{"name":"Mammogram","dose_msv":0.4,"flights_per_comparison":18.5},{"name":"Head CT Scan","dose_msv":2,"flights_per_comparison":92.6},{"name":"Eating a Banana","dose_msv":0.0001,"flights_per_comparison":0.00463}],"arc":{"grid_month":"2026-08","points":[[51.47,-0.45,3.81],[49.87,0.75,3.69],[48.25,1.87,3.5],[46.63,2.92,3.32],[44.99,3.91,3.13],[43.35,4.85,2.94],[41.7,5.74,2.75],[40.05,6.58,2.56],[38.39,7.38,2.43],[36.72,8.15,2.3],[35.05,8.88,2.17],[33.37,9.59,2.04],[31.69,10.26,1.91],[30.01,10.92,1.78],[28.32,11.55,1.73],[26.63,12.16,1.69],[24.94,12.75,1.65],[23.25,13.33,1.61],[21.55,13.9,1.56],[19.85,14.45,1.52],[18.15,14.99,1.51],[16.45,15.51,1.51],[14.75,16.03,1.5],[13.05,16.54,1.49],[11.34,17.05,1.48],[9.64,17.55,1.48],[7.93,18.04,1.49],[6.23,18.53,1.5],[4.52,19.01,1.51],[2.81,19.5,1.52],[1.1,19.98,1.53],[-0.6,20.46,1.55],[-2.31,20.94,1.58],[-4.02,21.43,1.61],[-5.73,21.91,1.64],[-7.43,22.4,1.67],[-9.14,22.89,1.71],[-10.84,23.39,1.76],[-12.55,23.89,1.83],[-14.25,24.4,1.91],[-15.96,24.92,1.98],[-17.66,25.44,2.06],[-19.36,25.98,2.13],[-21.05,26.52,2.23],[-22.75,27.08,2.35],[-24.45,27.66,2.48],[-26.14,28.25,2.6]]},"attribution":"FlightDose (https://flightdose.com/)"}
