Short answer: Not always. FitsAir sometimes offers very low fares on Colombo (CMB) — Malé (MLE), but the cheapest carrier changes with travel dates, promotions and where you book. (FitsAir.com)

What I found

• FitsAir runs flash sales and often lists low one‑way fares on the Colombo–Malé route. (Example: past FitsAir flash-sale fares and published rate cards). (FitsAir.com)
• Major search engines show different airlines as cheapest on different dates — e.g., Google Flights / Skyscanner recently found Flydubai, Gulf Air or SriLankan as the lowest on some sample dates, with fares often in the ~$140–$300 one‑way/round‑trip range depending on dates. (google.com)
• Online agencies (MakeMyTrip, Cleartrip, Kiwi, etc.) may list FitsAir as the cheapest for some dates but not others — results depend on the specific outbound/return dates, advance‑purchase, baggage rules and any promo codes. (MakeMyTrip.global)

Practical advice (quick)

• If you have fixed travel dates: compare prices across Google Flights, Skyscanner, and 1–2 OTAs plus FitsAir’s official site — the cheapest option is the one that shows the lowest total price including baggage and fees. (google.com)
• If your dates are flexible: use flexible‑dates search (±3 days or monthly view) — low‑cost windows often appear and the cheapest airline can change day-to-day. (Skyscanner.com)
• Watch for extras: FitsAir’s base fares may be low but check baggage, seat selection and change/cancellation fees before booking. (FitsAir.com)

If you want, tell me your travel dates and whether you need checked baggage — I can compare current prices across FitsAir and competitors and give the cheapest booking option.