How to fly with a bike: airline fees, limits and packing

To fly with a bike in the US, you check it as a regular bag in a bike case, bag or box: the big airlines charge the standard checked bag fee, several waive the oversize fee, and most charge overweight fees above 50 lb (23 kg). Pack it with the pedals off, handlebars turned sideways and tires let down, keep the box under 50 lb, and don’t try to bring an e-bike battery: anything over 160 Wh is banned from passenger baggage.

Fees and rules change often. Everything below was checked on each airline’s official site on October 19, 2026. Where we couldn’t load or confirm a figure, we say so and send you to the airline: confirm before you book.

Airline bike fees and limits

Sources: each airline’s official baggage pages and JetBlue’s contract of carriage (links below). “Standard bag fee” means the same price as any checked suitcase on your fare and route, so elite status, premium cabins or an airline credit card can make the bike free.

Three things worth knowing:

• Alaska is the easiest: a bike costs the same as a suitcase, and you get 20 extra pounds before overweight fees. With a heavy hard case, that can save you an overweight fee in each direction.
• Delta and Southwest stop at 100 lb and 115 inches. A typical bike bag fits; a big downhill bike in a hard case might not. Measure length + width + height before you go.
• Regional jets and partner airlines can be different. Delta notes exceptions on some Delta Connection flights, and Southwest and Alaska warn that partner airlines apply their own rules. On a codeshare, follow the operating carrier’s policy.

Hard case, soft bag or cardboard box

Since the limit that matters is usually 50 lb (23 kg) including the packaging, weigh the whole thing at home on a bathroom scale (weigh yourself holding it, then subtract). A road bike leaves room for almost any case; a gravel or mountain bike in a heavy hard case, with shoes and helmet stuffed inside, can go over. Alaska’s 70 lb allowance is the exception.

How to pack a bike for a flight

1. Take photos and mark your saddle height with tape on the seatpost so you can rebuild it the same way (see how to set saddle height).
2. Remove the pedals. The left pedal has a reverse thread: it loosens clockwise.
3. Remove the wheels and put spacers in the disc brake calipers so the pistons can’t close if someone squeezes a lever.
4. Protect the rear derailleur. Unbolt it from the hanger and wrap it, or at least surround it with foam. It’s the part that breaks most often in transit; pack a spare hanger for your frame.
5. Turn or remove the handlebars and strap them to the frame with zip ties or tape, padding the levers.
6. Put a spacer in the fork and the rear dropouts (bike shops hand them out with new-bike boxes) so the frame can’t be crushed.
7. Let most of the air out of the tires, as the airlines ask. Tubeless tires can unseat: bring a pump that moves a lot of air and see our tubeless guide and tire pressure guide when you rebuild.
8. Fill the gaps with clothes or foam so nothing can move, and bag the pedals, tools and bolts together.
9. Put your name and phone number inside and outside the case.

Carry a multi-tool in your carry-on, and a torque wrench if your bike is carbon: the stem and seatpost bolts need the torque printed on each part (common values are in our bike torque specs chart). If you’re not confident rebuilding the brakes and stem, have a shop check the bike before your first ride.

E-bike batteries: why they can’t fly

The FAA’s PackSafe rules for passengers set three tiers for lithium-ion batteries:

An e-bike battery is typically 400-750 Wh, so it can’t travel as baggage at all, and IATA’s 2026 guidance for passengers notes that most small vehicles use batteries over 160 Wh. On top of that, Alaska, Delta, Southwest and JetBlue only accept non-motorized bikes, so the bike itself can be refused even without its battery. Your options are renting an e-bike at your destination or shipping it with a freight service that handles dangerous goods (see e-bike battery care and shipping).

The small batteries in lights, bike computers and electronic shifting are usually well under 100 Wh: they’re fine installed on the bike, but spares and power banks go in your carry-on.

Common mistakes

• Not checking your fare’s bag allowance. Basic economy fares often include no free checked bag, so the bike pays the full first-bag fee.
• Going over 50 lb by packing your helmet, shoes and floor pump in the case. Weigh it at home.
• Forgetting the disc brake spacers. If a lever gets squeezed with the wheel out, the pads close and you’ll be pushing pistons back at the hotel.
• Leaving the derailleur unprotected. A bent hanger can end your trip on day one. Carry a spare.
• Rebuilding in a hurry. Check brakes, thru-axles and stem bolts before your first ride. If the brakes feel different, see a mechanic.
• Assuming last year’s fee still applies. Airlines change bag policies several times a year: check the official page when you book, and again before you fly. If you’d rather not fly the bike at all, compare taking it by train or by car.

Updated October 19, 2026 ·Report an error on this page