£3–£7 Megabus fares along the M8 beat almost any rail ticket
Megabus M8 is a low-cost coach option that links Glasgow city centre with other points on the M8 corridor, typically including Edinburgh, for roughly £3–£7 if you book ahead. Glasgow Airport (GLA) itself doesn’t sit right on the Megabus route, so you first ride a local bus from Terminal 1 or Terminal 2 into the city, then connect to the Megabus stop near Buchanan Bus Station on Killermont Street.
From both T1 and T2, airport buses into Glasgow city (like the 500 service) usually take about 15–25 minutes to reach Buchanan Bus Station, where most Megabus M8 departures line up. Once you’re at Buchanan, typical Glasgow–Edinburgh Megabus trips run around 70–90 minutes depending on traffic and the exact M8 pattern that day. Coaches are standard single- or double-deckers with basic seats and limited legroom compared to rail, so plan for up to 2 hours of total sit time if you’re heading straight from GLA to Edinburgh.
Megabus tickets on the M8 route are sold by specific departure time, with advance fares starting near £3 and walk-up or last-seat prices often creeping closer to £10–£12. You can buy online via app or website and show a QR code to board, or pay at some station kiosks inside Buchanan Bus Station on Killermont Street. Seats are first-come, first-served even with a ticket, so for a busy Friday 17:00 run you’ll want to be in the boarding queue 10–15 minutes before the stated departure.
Most Megabus M8 coaches run daily from early morning to late evening, with departures often clustered around commuter peaks between 07:00–09:00 and 16:00–18:00. Luggage goes in the underfloor hold; a soft checked bag plus a small cabin bag is usually fine, but if you’re rocking a 23 kg hard-shell case and a ski bag, give yourself extra loading time when the driver opens the side lockers. Wi‑Fi and charging points are common but not guaranteed on every coach, so don’t rely on a single USB port to rescue a 5% phone.
For an ultra‑cheap GLA–Edinburgh trip via Megabus M8, pad your connection: aim for an airport bus that gets you to Buchanan at least 45–60 minutes before your booked coach, so a delayed flight or slow baggage belt at T1 or T2 doesn’t turn a £5 ticket into a last‑minute rail scramble.