Yorkshire Air Ambulance (YAA) has launched an appeal for funding after seeing its fuel costs soar by 65%.
The charity said it was paying 66p per litre for aviation fuel in February - but that figure rose to £1.09 per litre in March.
Kathryn Marsden, the YAA's chief executive, told BBC News:
"It went straight up. So last month, our fuel cost us £7,000 more than the month before.
"We don't pay VAT on aviation fuel for emergency services.
"So usually we would end up with spending approximately £276,000 a year on aviation fuel.
"It might go up, but if it stays at that level, we'd be going up to nearly half a million in fuel costs for the year.”
The rise is a result of volatile energy markets since the US and Israel attacked Iran in February.
If you would like to donate to YAA, please visit yaa.org.uk/donate

Rail engineering works will now extend to 7 days
Riverside toilets go green with new solar panels
Tesco launches summer support campaign for families in Ilkley
Record crowds enjoy opening day of Great Yorkshire Show
All welcome to Sunday's Ilkley Pride Coffee & Cake Social
Volunteers needed to stage Yorkshire Day weekend in Ilkley
Ilkley Half Marathon hailed a major community success
50 winners from successful community partnership at Ilkley Station
A new Ilkley Water Trails has been a success
No Town of Culture accolade for Ilkley
Discover Nell Bank's Most Wanted Birds this summer!
Bradford Council ranks second highest in region for garden waste charges
Ziplining into her 90s this weekend in Ilkley!
St John’s to screen People’s Emergency Briefing
Yorkshire Water urges customers to cut water use during heatwave
Review: Upstagers' Addams Family - a musical comedy to die for!
Ilkley guest house celebrates winning 'Best Breakfast' in AA B&B Awards
Summer Makers’ Fair returns to Ilkley Manor House
Ilkley Town Council urges people to stay hydrated!
Airedale Community brings comfort to loves ones at Airedale General Hospital


