JetBlue has increased its checked baggage fees for Blue, Blue Plus, Blue Flex, and Mint tickets, according to the airline's website.

For tickets booked on or after Monday, Aug. 27, the first checked bag with a Blue fare will be $30 (increased from $25), and second with a Blue or Blue Plus fare will be $40 (increased from $35). For all fare levels, any additional bags beyond two will be $150 each (increased from $100). The first checked bag will still be included in Blue Plus and Blue Flex fares, and Blue Flex and Mint will still include the first two checked bags.

Fees for oversized (63 to 80 inches including wheel and handles) and overweight (51 to 99 pounds) baggage increased from $100 per bag to $150. Multiple outlets reported last week that pet fees would go up, but as of Monday they are still $100, according to the JetBlue site.

Fees for changes and cancellations also increased. All reservations made a week or more in advance will still be canceled without penalty for up to 24 hours after booking, but instead of a flat fee of $75 plus difference in fare for Blue and Blue Plus changes and cancellations made 60 days or prior, the new fees depend on the original fare and do not have a 60-day rule.

Now, changes or cancellations will be $75 plus fare difference for fares booked at under $100; $100 plus fare difference for fares booked at $100-$149.99; $150 plus fare difference for fares booked at $150-$199.99; and $200 plus fare difference for fares booked at over $200.

Blue Flex passengers will still pay difference in fare only, and Mint passengers will pay $200 plus difference in fare. Previously, Mint fees were $75 plus difference in fare for changes for non-stop fares under $950 or connecting fares under $1,350, and all other Mint non-refundable fares would have just paid the difference in fare for changes.

If saving on luggage fees is a priority, it's worth noting that Southwest remains the only U.S. carrier offering two checked bags for free.