Flying Delta Airlines with a Cat (2026): Is It the Right US Airline for Your Route?

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Delta is one of the three large US legacy carriers that allows cats in the cabin on domestic routes — alongside United and American. All three charge $150 each way. The differences are in how you book, what carrier is accepted, and which routes are actually permitted. For most travellers, the decision comes down to one question: are you willing to make a phone call?

Here's the decision framework for all three — then the full Delta guide for those who land there.

This guide reflects publicly available policy information — not professional veterinary, legal, or official travel advice. Policies and regulations change. Always verify directly with your airline, vet, and relevant authority before you travel. Full disclaimer →

Delta, United, or American — three carriers, one decision

All three allow cats in the cabin on domestic US routes. All three charge $150 each way. The differences that actually matter:

Search flights: Comparing Delta with other US carriers? Search and compare flights on Expedia →

Which airline is right for you?

Choose Delta if:

• Your route strongly favours Delta's schedule — Delta dominates coverage out of Atlanta (ATL), Minneapolis (MSP), Detroit (DTW), and Salt Lake City (SLC). If Delta has the best flight for your specific route, the phone booking is the only real friction point.
• You already have a soft-sided carrier in the 18″×11″×11″ range — Delta's dimensions are clear and generous for mainline aircraft.
• You're flying Delta First on a domestic non-flat-bed route — Delta allows up to 2 pets in that cabin. No equivalent premium cabin access exists on Delta One.
• You want to bring two cats — Delta allows 1 kennel per passenger and 2 pets per kennel under specific conditions (same breed, same size, both under 6 months), which may allow both cats in one carrier.

Consider United instead if:

• You want to book online without calling. United's My Trips flow adds the pet in minutes. Delta has no equivalent — you must phone every time.
• You have a hard-sided carrier. United publishes explicit hard-sided dimensions and accepts them in the cabin. Delta recommends soft-sided; if you want to use a hard-sided carrier on Delta, confirm with Delta Reservations before booking.
• You want kiosk check-in rather than a Special Service Counter queue.
• You're on a widebody route (B767, B777, B787) — United allows up to 6 pet spots in Economy on those aircraft.

For the full United comparison: Flying United Airlines with a cat (2026)

Consider American instead if:

• Online or app booking is non-negotiable — American allows adding a carry-on pet through aa.com or the American app, with fee payment at the airport ticket counter.
• You're flying to Alaska and American has the better schedule — American explicitly lists Alaska in its permitted destinations.
• Your domestic hop is short and American's route is significantly more convenient.

Can I take my cat on Delta in the cabin?

Yes — on most US domestic routes. Delta allows small cats (and dogs and household birds) to travel in the passenger cabin on domestic flights within the contiguous United States, as well as Puerto Rico, the US Virgin Islands, Guam, and Canada. The fee is $150 each way for tickets issued on or after April 8, 2025. Many guides online still quote $95 — that was the rate before the April 2025 change.

Delta also permits cabin cats on some international routes, with additional requirements and a longer list of excluded destinations. Whether your international itinerary qualifies depends on the specific destination — the exceptions list is worth checking carefully before you book.

Your cat must be at least 8 weeks old for domestic travel. Delta recommends a soft-sided carrier; it must fit fully under the seat in front of you.

Where in-cabin cats are NOT allowed on Delta

Delta's exceptions list is longer than most people expect. For any travel to or from the following destinations, cats cannot travel in the cabin:

Two of these catch US travellers out more than the others:

Hawaii. A flight from Los Angeles or Seattle to Honolulu looks and books exactly like any other domestic journey. No passport, same booking flow, same fare structure. But Hawaii is explicitly excluded from Delta's in-cabin pet policy. If your itinerary touches Hawaii in either direction, your cat cannot travel in the cabin — there is no exemption based on departure city or ticket type.

United Kingdom. UK government rules require all cats entering Great Britain to arrive as cargo via an approved carrier and route, regardless of which airline is flying. Delta lists the UK as an exception on its own policy page. If you're flying to London Heathrow, London Gatwick, or Manchester on Delta, in-cabin cat travel is not possible — for anyone, on any Delta route.

Policy source: delta.com/us/en/pet-travel/overview, verified May 2026.

How to book your cat on Delta

You cannot add a cat to your Delta booking online. The website offers no option to add an in-cabin pet during the booking flow, and Manage My Trip doesn't offer it afterward either. You must call Delta Reservations.

This is the most common surprise flagged in traveller reports (r/TravelWithPets, r/delta) — people assume they can sort it online before departure and discover at check-in that the pet was never registered. On popular morning routes out of major hubs, the per-flight pet spots can fill up quickly. Calling the same day you book your own flights is the right move.

Steps:

1. Book your own flights first. Confirm your itinerary — dates, route, cabin — before calling about your cat.
2. Call Delta Reservations with your pet's kennel dimensions ready (length, width, height). The agent needs these to confirm the carrier will fit on your specific aircraft type.
3. Get a reference number or note on the booking. Some travellers have arrived at check-in to find the pet wasn't registered despite a phone call. A confirmation reference helps resolve this quickly.
4. Check in at the Special Service Counter — not the standard check-in desk. A Delta agent there will verify your cat and carrier meet the requirements and collect the pet fee. Allow extra time; the Special Service Counter is typically a separate queue from standard check-in.

Per-flight pet limits (first-come, first-served):

If you are flying Delta One, Business Class, or Delta Premium, your cat cannot travel in the cabin on that booking. Cabin pet travel on Delta requires Delta Main Cabin, Delta Comfort+, or (on eligible domestic routes without flat-bed seats) Delta First.

This surprises some premium cabin travellers. The expectation is that a more expensive ticket brings more flexibility. For in-cabin pets on Delta, the opposite is true.

Search flights: Find your Delta flight first — search routes on Expedia before you call Reservations to add your cat. The pet spot is confirmed by phone, but you need a ticket first.

Carrier requirements

Delta recommends a soft-sided carrier for in-cabin travel and publishes recommended maximum dimensions of 18″ × 11″ × 11″ for most aircraft. If you want to use a hard-sided carrier, confirm directly with Delta Reservations before booking — the carrier must fit fully under the seat on your specific aircraft, and in practice soft-sided carriers are the safest choice because they flex to fit.

Delta's stated requirements:

• Must fit fully under the seat in front of you
• Your cat must fit comfortably with room to move — not touching or pressing against the sides
• Recommended maximum dimensions: 18" × 11" × 11" — Delta states this fits most aircraft under-seat configurations
• Must be leak-proof
• Must have ventilation openings on at least 3 sides for domestic travel; 4 sides for international
• One carrier per passenger

Carrier that fits Delta’s limits: The pecute Airline Approved Cat Carrier measures 44 × 23 × 23 cm (17″ × 9″ × 9″) — comfortably within Delta’s 18″ × 11″ × 11″ recommendation. Steel-frame construction keeps it from collapsing under the seat. Around £23 on Amazon UK.

Reducing travel anxiety: Spray FELIWAY Classic inside the carrier 15 minutes before the journey. The vet-recommended pheromone spray works without sedation — cats are typically calmer at the gate and more settled under the seat. Around £17 on Amazon UK.

The regional jet caveat

The 18″×11″×11″ recommendation is a good baseline for mainline Delta aircraft — but the under-seat space on compact regional jets is materially smaller. CRJ-700s and CRJ-900s in Delta's regional network typically have lower clearance than a 737 or A320. A carrier that fits cleanly on a mainline segment may not fit on a regional connection on the same itinerary.

One traveller report from r/delta: a passenger flying ATL-DFW on a CRJ-700 noted that a 17″×10.5″×10″ carrier sat flush under the seat, but the Delta agent at check-in was strict about the “no touching the sides” requirement. This is anecdotal — enforcement can vary — but the pattern matches what other regional jet travellers report. The practical takeaway: check the aircraft type for every segment on delta.com before buying a carrier, and if any leg operates on a regional jet, choose a carrier with dimensions around 17″×10″×10″ to maintain a margin.

At security. You are required to remove your cat from the carrier while the carrier goes through the X-ray machine. Hold your cat securely during this. Once through the checkpoint, your cat must go back into the carrier and remain there for the rest of the airport experience — including boarding, the Sky Club if you visit, and the entire flight.

Seating restrictions

Even on routes where cabin cat travel is permitted, some seat types are not available to passengers with pets:

• Bulkhead seats (no under-seat storage in front)
• Emergency exit rows
• Seats designated as "no stowage"
• Flat-bed or Delta One seats
• Rows 46–51 on the A330-200
• Rows 54–59 on the A330-300
• Centre seats on the B757-200

When you call to add your pet, confirm which seats remain available for pet passengers on your specific flight. Window seats are often preferred by experienced cat travellers — slightly more protected from aisle traffic during boarding and deplaning, and the carrier is less likely to be jostled.

Fees

Delta's in-cabin pet fees changed in April 2025. The current rates:

The domestic fee was $95 each way for tickets issued before April 8, 2025. Most guides written before mid-2025 still quote the old rate. If you're researching this based on a forum post or older article, verify the current figure directly with Delta before planning around it.

The fee is collected at check-in at the Special Service Counter — not at the time of booking or when you call to add your pet.

What goes wrong — and what to do instead

1 — Trying to add your cat online

Delta has no online option for adding an in-cabin pet, either during the original booking or afterward. This catches people at both points. By the time some travellers call, the per-flight pet spots on their preferred departure are already taken.

What to do: Call Delta Reservations as soon as you've confirmed your own itinerary. Don't wait until closer to the travel date.

2 — Assuming Hawaii counts as domestic

A mainland-to-Hawaii flight books identically to any other domestic journey. But Hawaii is explicitly excluded from Delta's in-cabin pet policy. This is not a grey area — Delta's policy page lists it directly.

What to do: If Hawaii is your destination, research whether your trip is feasible without in-cabin travel. There is no workaround within Delta's policy.

3 — Flying Delta One or Business Class with a cat

Delta One and Business Class International don't permit in-cabin pets. The exclusion extends to Delta Premium. A traveller who upgrades to Delta One expecting more flexibility finds the opposite: their cat cannot travel in the cabin at all on that booking.

What to do: Book Delta Main Cabin or Comfort+ if you're travelling with your cat. If you want to use points or miles for a premium seat, check whether your cat can travel on a separate segment or consider an alternative arrangement.

4 — Arriving at standard check-in

Standard check-in desks don't process in-cabin pets. You need the Special Service Counter. At busy airports — Atlanta Hartsfield (ATL) especially — this counter can involve its own queue, and the pet verification process adds time.

What to do: Build in an extra 30–45 minutes compared to a non-pet trip. Locate the Special Service Counter at your departure airport in advance.

5 — Assuming a hard-sided carrier will be accepted

Delta recommends soft-sided carriers and publishes dimensions based on soft-sided products. Unlike United, Delta does not publish explicit hard-sided dimensions or confirm hard-sided acceptance on its public policy page. IATA-compliant hard-sided crates used for cargo travel serve a different purpose and are not suitable for cabin travel regardless.

What to do: Use a soft-sided carrier for Delta cabin bookings — it's the safest choice because it can flex under the seat. If you want to use a hard-sided carrier, call Delta Reservations before booking to confirm whether it will be accepted on your specific aircraft. The IATA crate guide covers cargo crate requirements separately.

6 — Not accounting for regional jet dimensions

The 18″×11″×11″ recommendation fits most mainline Delta aircraft. Regional jets in Delta's network have smaller under-seat clearance, and the margin is not forgiving.

What to do: Check the aircraft type for every segment before buying a carrier. If any leg is a CRJ-700, CRJ-900, or similar regional aircraft, opt for a carrier in the 17″×10″×10″ range rather than pushing the 18″×11″×11″ maximum.

One traveller report from r/TravelWithPets: a passenger on a peak-season LAX-ATL morning flight called to add her cat and found all four Main Cabin pet spots already taken — one other traveller had booked two carriers (permitted under Delta's rules). This is anecdotal, but it illustrates why calling early matters on popular routes. Calling as soon as your own flights are confirmed is the safest approach.

Flying to the UK or Europe with your cat on Delta

United Kingdom. Delta explicitly lists the UK as an exception to its in-cabin pet policy, and UK government rules are the reason. All cats entering Great Britain must arrive as cargo via an approved carrier and route — this rule applies to every airline. If you are flying from the US to the UK, or from the UK to the US, your cat cannot travel in the cabin regardless of which airline you book.

The transatlantic cargo process is more involved than most people expect: it runs through a specialist pet relocation company, involves documentation with strict timing windows, and typically costs £800–£2,000+ for a single cat. The United Airlines cat travel guide covers the transatlantic cargo route in detail — the process is the same whether you're flying United, Delta, or another carrier.

For a broader look at which European carriers allow cats in the cabin, see: Best airlines for flying with cats in Europe (2026).

Europe (not UK). Delta permits cabin cats on some international routes to Europe, provided the destination is not on the exceptions list and your cat is at least 15 weeks old (EU rules generally require this timing, accounting for rabies vaccination at 12 weeks plus a 21-day wait). Entry documentation requirements vary by country — verify with the destination country's requirements before booking.

Canada. Canada is in Delta's $150 each-way in-cabin pet fee category, alongside the contiguous US, Puerto Rico, the US Virgin Islands, and Guam. In-cabin cat travel to and from Canada is permitted subject to standard requirements.

Hotels near Delta hubs

If your itinerary involves an overnight near a major Delta hub — before an early departure, after a long international arrival, or while staging a journey in segments — verified cat-friendly hotel options are available at some key airports.

JFK (New York): Hotels near JFK that accept cats in the room (2026) — verified options with confirmed cat acceptance and Expedia availability, including the TWA Hotel (on-terminal at Terminal 5, cats accepted, $75 per-stay fee and no shuttle needed).

ATL (Atlanta), LAX (Los Angeles), MSP (Minneapolis), DTW (Detroit), SEA (Seattle), SLC (Salt Lake City), BOS (Boston): Cat-friendly hotel guides for Delta's other major hubs are in development.

FAQs

Can I take my cat on Delta in the cabin?

Yes, on most domestic US routes and some international routes. Delta allows cats in the cabin for $150 each way (for tickets issued on or after April 8, 2025). Several destinations are excluded — including Hawaii and the UK.

Can I fly to Hawaii with my cat on Delta in the cabin?

No. Hawaii is explicitly excluded from Delta's in-cabin pet policy, even though it's a domestic destination. Cats cannot travel in the cabin on Delta flights to Hawaii.

How do I add a cat to my Delta booking?

Call Delta Reservations — you cannot add a cat online. Have your kennel dimensions (length, width, height) ready. Per-flight pet spots are allocated first-come, first-served, so call as soon as your own flights are confirmed.

What size carrier does Delta require?

Delta recommends a soft-sided carrier with maximum dimensions of 18" × 11" × 11", which fits most aircraft under-seat configurations. For flights on regional jets, smaller dimensions may be necessary. Check the aircraft type for each segment before buying.

Can I fly Delta One with my cat in the cabin?

No. Delta One, Business Class International, and Delta Premium don't allow in-cabin pets. You need Delta Main Cabin or Comfort+ (or Delta First on some domestic non-flat-bed routes) to travel with your cat in the cabin.

What's the Delta pet fee in 2026?

$150 each way for domestic US travel (tickets issued April 8, 2025 or later). $200 each way for international routes. Many older guides still show $95 — that was the pre-April 2025 domestic rate.

Can I fly Delta to the UK with my cat in the cabin?

No. Delta lists the UK as an exception, and UK government rules require all incoming cats to arrive as cargo regardless of airline. In-cabin cat travel to or from the UK is not possible on Delta.

My cat is 6 weeks old — can they fly Delta?

No. Delta requires cats to be at least 8 weeks old for domestic travel. International travel has higher minimum age requirements (16 weeks for cats arriving in the US from abroad; EU rules generally mean cats must be at least 15 weeks old).

How many pets can be on a Delta flight?

Up to 4 in Delta Main Cabin and Comfort+, up to 2 in Delta First (domestic, non-flat-bed configurations only), and 0 in Delta One, Business Class International, and Delta Premium. Spots are first-come, first-served.

Can I bring my cat into a Delta Sky Club?

Yes, but your cat must remain in the carrier at all times inside the Sky Club — the same rule as on the aircraft. A Sky Club representative can help locate a pet relief area.

What happens if my carrier doesn't fit at check-in?

If the carrier doesn't meet Delta's requirements, it may be rejected at the Special Service Counter and your cat may not be permitted to travel in the cabin that day. The pet fee would be refunded, but your travel plans would be disrupted. Checking carrier dimensions against your specific aircraft type in advance is the only reliable way to prevent this.

Sources

• Delta Air Lines — Pet Travel Overview — verified May 2026
• Delta Air Lines — Baggage Overview
• USDA APHIS — Travel With a Pet

Related: Comparing US airlines for your trip? See our guide to flying American Airlines with a cat.