April 23 (Reuters) - Finnair on Tuesday swung to bigger-than-expected first-quarter comparable operating loss and cut its full-year revenue outlook, after weeks of strikes across Finland grounded flights and disrupted the national carrier's operations.

The airline reported a comparable operating loss of 11.6 million euros ($12.35 million) for the January-March quarter, compared to a profit of 0.9 million euros a year ago and bigger than the loss of 9.5 million euros expected by analysts polled by LSEG.

The first quarter is typically its weakest of the year.

Finnair cut its full-year revenue guidance, saying it now expected revenue to grow at a slower pace than capacity in 2024 compared to previous outlook for a "somewhat slower pace".

It also said it planned to increase its total capacity by about 10% in 2024, compared to earlier view of more than 10%.

($1 = 0.9396 euros) (Reporting by Elviira Luoma in Gdansk; Editing by Josephine Mason)