Travellers using the airport, which is currently advertising for full-time air traffic control staff, suffered disruption as flights were cancelled to and from Inverness and Glasgow. Services from Inverness, Edinburgh and Glasgow were also affected yesterday and letters were not delivered to island households as the mail plane arrived late.
The airport opened at 8.15am yesterday, one hour and 45 minutes later than usual.
Eastern Airways services between Aberdeen and Stornoway will fly as usual.
Inglis Lyon, managing director of Stornoway's operator Highland and Island Airports, said operational challenges meant it was introducing "slight changes" to the airport's operating hours on select dates to comply with regulations.
The last flights of the affected days to Inverness and Glasgow have been axed due to a 5.45pm cut-off.