The price of flights has been rising since the start of the conflict in the Middle East, a worry for anyone planning a summer holiday.
Some airlines are also cutting back the number of flights they are operating, which could mean travellers facing changes to their plans.
On Wednesday, analytics firm Cirium released data showing that airlines have cut 13,000 flights globally in May.
However, the travel agents' trade body Advantage Travel Partnership said the cancellations were marginal overall - about 1% - and UK flights to summer sun destinations were unaffected.
Many airlines that serve the UK have said they plan to operate fewer flights.
