· Alaska Airlines - Possibly. A small bag might just be about 2-inches too big in depth, but still be far off the height and width. Don't be surprised if you are asked to verify at check-in.
· Allegiant - Absolutely not. Best best is just checking these in and paying the checked back fees.
· American Airlines - No. Best bet is to check these babies in since the airline considers a pair of skis and a boot bag as one piece.
· Delta - No. Delta has the same ski equipment policy as American.
· Southwest - Possibly. Similar to Alaska, some boot bags might look the right size and pass by check-in agent. But with bags flying for free, just check those boots in.
· United - No. Along with other legacy carriers, United has a special policy for ski equipment. One little perk is that UA considers 2 pair of skis, one equipment bag and one boot bag and a whole piece of baggage.
· US Airways - No. Just like it's merger partner, your whole kit will count for one piece.
· WestJet - Yes, feel free to bring your ski boots as a carry-on, so long as the bag containing them conforms to WestJet's size limitations.
These answered based on the a typical ski/snowboard boot bag with average dimensions of 16.5x16x14.5" with the slimmest measuring 18x13x12". If you just have to carry on your boots, we'd recommend the vintage look of the Allsop Boot-In Carrier. It's sleek enough to count as a carry-on and will definitely fit in the overhead compartment.