- US airlines cancel more than 1,000 flights on Sunday
- Talks set to resume on Iran nuclear deal
- OPEC+ meets on Jan 4 to set oil policy
US oil fell on Monday after airlines called off thousands of flights over the Christmas holidays amid surging Covid-19 cases, though Brent crude gained support from hopes that the Omicron variant will have limited impact on global demand.
More than 1,300 flights were cancelled by US airlines on Sunday as Covid-19 reduced the number of available crews while several cruise ships had to cancel stops.
US West Texas Intermediate (WTI) crude was down 89 cents, or 1.2%, at $72.90 a barrel by 0948 GMT. The US market was closed on Friday for a holiday. Global benchmark Brent crude rose 12 cents, or 0.2%, to $76.26.
"Lower travel equalling lower economic activity in the US equals lower WTI," said Jeffrey Halley, analyst at brokerage OANDA, who added that the divergence between Brent and WTI could reflect that recovery remains on course.
"The disruption to goods and services from isolating workers, notably air travel, seems to be the main fallout so far," he said of rising Omicron cases. "That is only likely to cause short-term nerves, with the global recovery story for 2022 still on track."
Brent has risen by more than 45% this year, supported by recovering demand and supply cuts by the Organization of the Petroleum Exporting Countries (OPEC) and its allies, collectively known as OPEC+. Oil gained last week after early data suggested that Omicron could cause a milder level of illness.
"Though Omicron is spreading faster than any Covid-19 variant yet, a relatively relieving news is that most people infected with Omicron are showing mild symptoms, at least so far," said Leona Liu, analyst at Singapore-based DailyFX.
Talks resume today between world powers and Iran on reviving Tehran's 2015 nuclear deal, a development that could eventually lead to higher Iranian oil exports. Still, the talks appear to have made little progress towards that end.
Also on investors' radar is the next OPEC+ meeting on 4 January, in which the producer alliance will decide whether to go ahead with a planned 400,000 barrels per day (bpd) production increase in February.
Last month OPEC+ stuck to its plans to boost output for January despite Omicron, which OPEC has said would be likely to have short-lived impact.