* Company raises 2015 capex to C$920 mln- C$940 mln from C$820 mln- C$840 mln
* Q4 revenue passenger miles up 6.5 pct
* Q4 revenue up 7.3 pct to C$994.4 mln (Adds comments from conference call, background, analyst comment)
By Anannya Pramanick and Darshana Sankararaman
Feb 3 (Reuters) - Cheaper fuel helped WestJet Airlines Ltd report a 34 percent jump in quarterly profit and the Canadian carrier said it expected fuel costs to fall by up to 30 percent in the current quarter.
The No. 2 Canadian airline by revenue behind Air Canada , said costs per available seat mile, a measure of how much an airline spends to fly a passenger, declined 3.5 percent in the fourth quarter ended Dec. 31 as fuel costs fell 6.4 percent.
Fuel prices have fallen over the past few months, reflecting a 50 percent slump in global crude oil prices since June due to excess supply and weak demand from Europe.
WestJet, however, ramped up its 2015 capital budget by $100 million to C$920 million-C$940 million due to a weak Canadian dollar.
A fall in the Canadian dollar hurts Canadian airlines as they make major purchases such as planes and fuel in U.S. dollars. A stronger dollar also often curbs travel.
The U.S. dollar strengthened to C$1.14 on an average in the fourth quarter from C$1.05 in the year-earlier quarter.
“So far the demand for travel seems to be pretty stable. We are not seeing any fall outs,” Altacorp Capital analyst Chris Murray said.
Calgary-based WestJet has been boosting capacity and adding more international flights, but has stressed that cheap fares are still a top priority for the airline, which began as a no-frills carrier.
While it announced a new fee for checked-in bags in September, it slashed fares for economy passengers on several routes by as much as 15 percent two months later.
Fourth-quarter ancillary revenue rose 46 percent to C$67 million, mainly helped by the introduction of the first-bag fee, Chief Financial Officer Vito Culmone said on a conference call with analysts.
Fees linked to baggage, advance seat selection and other options are a growing source of revenue for airlines.
Net profit rose to C$90.7 million ($72.4 million), or 70 Canadian cents per share, from C$67.8 million, or 52 Canadian cents per share, a year earlier.
Total revenue rose 7.3 percent to C$994.4 million, marginally beating analysts’ estimate of C$992.2 million. ($1 = C$1.25) (Writing by Sayantani Ghosh in Bengaluru; Editing by Kirti Pandey)