Can I bring plants on a plane?

What TSA allows

• Houseplants Carry-on Yes · Checked Yes
• Cut flowers Carry-on Yes · Checked Yes Without water, through the checkpoint.
• Seeds for planting Carry-on Yes · Checked Yes
• Fertilizer Carry-on No · Checked No

Two caveats TSA adds itself. The officer at the checkpoint has the final say on any item, and it is on you to check the plant will fit in the overhead bin or under the seat. Their plants page was last updated in 2017, so it is settled rather than fresh.

The one that catches people: flying out of Hawaii, Puerto Rico or the USVI

This is the direction almost everybody gets backwards. Federal rules prohibit moving plants, plant parts and cut flowers from Hawaii, Puerto Rico, the US Virgin Islands, Guam and the Northern Mariana Islands to any other state, except as specifically allowed. Arriving is a state matter; leaving is a federal one.

There is also a procedure, and it happens before you reach your gate. Carry-on goes to the agricultural inspection point at the security checkpoint or the boarding gate. Checked bags go to an agricultural inspection station before you drop them at the counter. Budget the time.

Soil is the regulated part, not the plant

The federal rule is written about the soil around the roots, and it says so almost in those words. A plant that has been freed of sand, soil and earth stops being the thing the rule is about. That is why "wash the roots and travel bare-root" turns a no into a yes more often than people expect.

Soil on its own, moving between mainland states, does not need a federal permit — but it is still subject to whatever pest quarantine covers the area it came from. Soil moving to, from or between Hawaii, the territories and the mainland is different: that needs a permit from APHIS.

Flying the other way, into Hawaii

That is Hawaii's own law rather than a federal one, and it starts before you land: every passenger completes a Plants and Animals Declaration, which has been digital since the 2025 holiday season — you fill it in online, up to five days ahead or during the flight, rather than on a paper slip. Anything agricultural then goes to the inspection counter near the baggage claim exits. Plant material has to be free of soil, pests and any sign of disease.

The declaration form, in full — including what counts as agricultural and the plants Hawaii restricts on arrival.

Between two mainland states

TSA will let the plant through the checkpoint. What decides the answer is the state you are landing in, because it is the arriving state that sets the rules — and several ask for an inspection certificate on plants arriving however they arrive, whether that is a car boot or a carry-on.

So the useful question is not "can I fly with this" but "what does the state I am flying to ask for". That is what the rest of this site is: California, Florida, Texas, and every other state.

Airline policies

Worth knowing what an airline can and cannot decide here. It decides whether the pot fits the cabin — size, stowage, and whether a bag is acceptable at all. It does not decide whether the plant may enter the state you are landing in; nobody at a gate does. So an airline page that says nothing about plants is not permission and not a refusal, it is just the wrong document.

Delta

The clearest of the four, and it says the same thing this page does. Delta allows edible and non-edible agricultural and perishable items in carry-on "as long as they comply with the restrictions for transiting airport security and for your destination" — and then lists flowers, plants, seeds and soil, including cut flowers and vegetable plants, among the things that may be prohibited or restricted. Two conditions, TSA's and the destination's, which are the two this page is about.

Southwest

Southwest's Contract of Carriage — the document that actually binds it — does not mention plants anywhere. What it does say is that Southwest decides in its sole discretion whether any bag may be carried in the cabin, on its weight, size, contents or character, and that everything carried on has to fit under a seat or in an overhead bin.

Checked is the part to think about. Southwest is not obliged to accept baggage it considers unsuitable, and where it does take a perishable item that is under a limited release of liability: not liable for spoilage, damage or delay. The contract never calls a plant perishable — it says nothing about plants — but that is the clause a dead monstera would land in. TSA still allows it; the arriving state still decides.

United

United sets its own carry-on and checked-baggage terms, and we have not been able to keep a copy of them, so this page will not tell you what they say — ask United about size and stowage. Nothing else moves: TSA allows plants in both kinds of bag, and the state you land in sets the rule.

American

The same position as United, for the same reason — American's baggage terms are not archived here either, and we do not paraphrase a page we have not kept. Ring them if the plant is large enough that the overhead bin is the real question.

The reason for spelling out which of these we have and have not read: search results for "can you bring plants on [airline]" contradict each other, and almost none of them cite the airline. Two of the four here are quoted from the airline's own document. Two are not, and are marked as such.