Chiang Mai to Siem Reap: buy now or wait?
Updated : Typical one-way fare Chiang Mai→Siem Reap: €112 (median of 35 daily lowest fares we tracked); under €95 is a good price; cheapest month: October; book 14–27 days ahead.
Cheaper than 86% of what we have seen
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All fares Chiang Mai → Siem Reap
Cheapest first. Every price is live and goes straight to booking.
What the history says
Based on 111 prices we recorded on this exact route, compared against the same departure month.
Best booking window
14–27 days — is when this route has been cheapest to book: €112 typical, on 22 observations.
Cheapest months to fly to Siem Reap
Booking tips from our fare data
- How far in advance should you book a flight?
- Book 1.5–2 months before departure. Tracking the same flights at every lead time (116,633 flights on 22,463 routes, 2026-06-14 to 2026-11-12), that window had the smallest average premium over each flight's lowest fare: +16.1%, against +48.8% in the last 3 days.
- What are the cheapest cities to fly to this winter?
- Milan (median €29), London (median €30), Catania (median €32). That is the median one-way fare for departures from 2026-11-01, across 352 cities ranked from fares we observed, counting only cities reachable from at least 50 airports.
- Are last-minute flights cheaper?
- No. In the last 3 days before departure the same flight cost on average 48.8% more than its cheapest observed fare. Comparing 35,643 flights seen both 3–4 weeks and under a week out, the late fare was higher 67% of the time (median +9.7%).
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