The price on a particular currency pair that you see on your trading platform is the price and liquidity that is available to you - "what you see is what you get" concept.
Spreads depend on the currency pair and the desired trade amount.
See choice of FX Spot Prices.
Under abnormal market conditions such as just before and just after releases of key economic figures, during periods of volatile market conditions or at illiquid times, e.g. market opening, early Asian time zone, late New York time zone, during value date change, spreads may be wider.