Skip central Madrid: bus 827 runs straight toward Tres Cantos
Interurban bus 827 links the airport corridor and Canillejas area with Tres Cantos and the Universidad Autónoma de Madrid zone in about 45–60 minutes, traffic and stops depending. It runs as a regional green bus under CRTM, so you ride on normal public transport fares instead of paying for a taxi all the way north.
A single interurban ticket on 827 runs roughly €2–4 one way, depending on zones crossed between the airport side and Tres Cantos / UAM. You can usually pay the driver directly with cash, and in many cases with contactless transport cards or CRTM passes valid for the corresponding fare zones; check your pass coverage before boarding so you don’t have to buy an extra ticket on the spot.
Frequency sits around every 20–30 minutes on weekdays, then stretches out on weekends and late evenings, much like other Madrid interurban lines. CRTM timetables split schedules by workdays, Saturdays, and Sundays/holidays, so if you land on a Sunday night you could be looking at noticeably longer headways and should screenshot the schedule before you lose data.
Route maps from CRTM show line 827 running between Canillejas and the northern suburbs (Tres Cantos and the university campus), with a branch via the airport zone instead of going into central Madrid. That makes it useful if you’re headed straight to Universidad Autónoma or the business parks around Tres Cantos and don’t want to change twice on the Cercanías from Atocha or Chamartín.
The bus doesn’t start inside T1–T4S terminals like the 200 or Exprés Aeropuerto, so you likely connect via the airport–Canillejas corridor first, then switch to 827 at a stop signposted on CRTM maps. Build at least a 15–20 minute buffer between your terminal transfer and the 827 timetable, especially in rush hour when traffic around the M-40 and M-607 can slow everything down.
Step-by-step: using Interurban Bus 827 Tres Cantos from MAD
- 1. Land at T1, T2, T3, T4, or T4S and follow signs to exits and bus / transport icons.
- 2. Take the internal airport bus or Metro / EMT bus to the Canillejas–airport corridor stop indicated on CRTM’s 827 map.
- 3. At the stop, find the green CRTM pole marked for line 827 Tres Cantos / Universidad Autónoma and check the posted timetable.
- 4. Board through the front door, tell the driver your destination (for example, Tres Cantos or Universidad Autónoma), and pay around €2–4 or validate your CRTM pass.
- 5. Watch the onboard display or listen for your stop; the full run toward Tres Cantos usually takes 45–60 minutes from the airport side.
- 6. Tap out or step off at your stop in Tres Cantos or UAM, then check local bus or Cercanías options if you still have a final short hop.
One practical tip: screenshot the 827 timetable and route map from CRTM before you fly; reception at some stops near the M-607 isn’t great, and having the times on your phone keeps you from guessing in the dark.