Delta One vs United Polaris: Doors, Lounges and Miles Compared

Pick Delta One if you want a business-class seat with a door on most of your flights and more miles back on a cash fare. Pick United Polaris if you start from a United hub with a Polaris lounge, or if you can book the new Polaris Studio suite on United’s Elevated 787-9.

The decisive number: at the same price, Delta One earns 25,000 miles on a $5,000 fare to United’s 15,000 for a traveler with no status and no airline card.

We compared the two long-haul business cabins on nine points as of October 2026, using Delta’s and United’s own product, lounge and fare pages and their press releases. For the airlines as a whole, economy included, see our Delta vs United vs American comparison.

The seat: doors versus the biggest suite

Delta was first of the two to fit doors. Its Delta One Suites, staggered 1-2-1 with a sliding door, fly on the Airbus A350-900 and the Airbus A330-900neo. One Mile at a Time counted 38 and 39 of those jets in late 2025, 77 in all.

United’s doors arrived only in 2026, on the Boeing 787-9 with its new Elevated interior. Each of those jets has 64 business seats: 56 Polaris seats and eight Polaris Studio suites, all with doors. The FAA cleared the doors in early August 2026, and United had eight of these jets flying at the time.

That makes the door count roughly 77 to 8, close to a 10-to-1 gap. United plans at least 30 Elevated 787-9s by the end of 2027, so the gap will narrow, but not soon.

Edge: Delta One. You are about 10 times more likely to get a door in Delta One today.

The best seat on either airline

The single best seat belongs to United. United says the eight Polaris Studio suites are 25% larger than its standard Polaris seat, with a 27-inch 4K OLED screen, “the largest of any U.S. airline,” and an ottoman with a seatbelt for a companion in six of the eight.

Studio flyers also get a caviar amuse-bouche, pajamas and a Perricone MD skincare kit. United scheduled the first international route, San Francisco to Singapore, for April 22, 2026, followed by San Francisco to London.

Delta’s answer is still on the way. Its next-generation suite on the Airbus A350-1000 gets a 24-inch screen and a bed more than 3 inches longer than today’s Delta One seat, 83 inches according to The Points Guy, and Delta lists it as coming in 2027.

Edge: United Polaris. Polaris Studio is flying now; Delta’s new suite is not.

Lounges: United covers more of its hubs

United lists Polaris lounges at Chicago O’Hare, Houston, Los Angeles, Newark, San Francisco and Washington Dulles. That is six of its seven hubs, or 86%, with Denver the one missing.

Delta One Lounges are open at New York JFK, Los Angeles, Boston and Seattle. Delta names nine hubs, so four of nine, or 44%, have one, and Atlanta, Minneapolis, Detroit, Salt Lake City and LaGuardia do not.

The Delta One Lounge is for the ticket, not the credit card. Delta says Sky Club memberships and American Express credentials do not open the Delta One Lounge, and its JFK lounge runs a 140-seat brasserie with three-course service.

Edge: United Polaris. Six flagship lounges against four, at almost every hub.

Basic business fares: what you lose

Both airlines now sell a stripped-down business fare with the same flat bed. Delta calls its tiers Basic Business, Delta One Classic and Delta One Extra; we break down the rest of Delta’s cabins in Delta Premium Select vs First Class vs Delta One.

On Delta, Basic Business assigns your seat after check-in and charges for changes. It still includes the Delta One Lounge and Delta One check-in, but only for travel through January 18, 2027.

United announced base, standard and flexible fares for Polaris on April 3, 2026. Base passengers get the United Club, not the Polaris lounge, and The Points Guy reports they also pay to pick a seat, get one free checked bag instead of two, and cannot change the ticket.

“These new tiered options give customers more choice and make it easier to find a fare that includes the benefits they want most,” said Andrew Nocella, United’s chief commercial officer, in the April 2026 announcement.

Edge: Delta One, until January 2027. Delta’s basic fare keeps the flagship lounge for a few more months; United’s never had it.

Miles earned on a cash fare

This is the gap almost nobody mentions. Delta pays a general SkyMiles member 5 miles per dollar on Delta One Classic and 7 on Delta One Extra.

United changed its earning on April 2, 2026. A MileagePlus member without status and without a United card now earns 3 miles per dollar, and United’s own release says cardholders earn up to twice as much.

On a $5,000 fare, that is 25,000 miles on Delta One Classic against 15,000 on a standard Polaris ticket, a 10,000-mile difference. A Polaris Base fare earns no miles at all for a general member with no card, according to The Points Guy.

Edge: Delta One. Unless you hold United status or a United card, Delta pays two-thirds more miles.

Wi-Fi over the ocean

Delta Sync Wi-Fi is free for SkyMiles members on nearly 1,300 aircraft, more than 95% of the fleet. Delta received approval on October 9, 2026, to switch it on across the Pacific, the last region of its network, with the rollout starting later that month.

United’s Starlink is free for MileagePlus members, and its first widebody flight with it went from Newark to London on June 22, 2026. United expected nearly 60 widebodies fitted in 2026 and the whole widebody fleet by summer 2027, so plenty of Polaris flights still lack it.

Delta turned down Starlink, which we covered in why Delta passed on Starlink.

Edge: Delta One. Free Wi-Fi across almost its whole network, while United is still installing Starlink.

Where each one flies, including at home

Delta One runs on long-haul international routes and on select long-haul domestic routes from Delta’s hubs. Delta lists nine: Atlanta, Minneapolis, Detroit, Salt Lake City, Boston, Los Angeles, New York JFK and LaGuardia, and Seattle.

United flies from seven hubs: Chicago, Denver, Houston, Los Angeles, Newark, San Francisco and Washington, D.C. It calls itself the largest airline across both the Atlantic and the Pacific.

Since April 2026, United also brands the front cabin as Polaris on select transcontinental and longer Hawaii flights. Standard and flexible fares on those flights include the Polaris lounge, which makes a coast-to-coast ticket out of Newark or San Francisco a lounge ticket too.

Edge: Even. Both sell the brand on domestic long-haul flights; your home airport decides which network serves you.

Bedding, dining and the amenity kit

Delta One bedding is by Missoni: an oversized duvet, a large pillow and a lumbar pillow that doubles as a mattress pad. The Missoni amenity kit carries Grown Alchemist skincare, and you can choose your meal in the Fly Delta app from 7 days to 24 hours out.

Polaris bedding is by Saks Fifth Avenue, with a duvet, a large pillow and a mattress pad on request. The kit is built around TheraFace by Therabody skincare, and United serves an arrival meal before landing.

Delta is also refreshing the product. Its April 2026 plan puts suites with doors on its 42 A330-200 and A330-300 jets, with the refreshes due to start in September 2026. “It’s an optimization of a product that’s already great,” Mauricio Parise, Delta’s vice president of brand experience, told The Points Guy.

Edge: Even. Both are designer bedding and branded skincare; neither is a reason to switch.

Who should pick which

For most travelers, the airline that flies nonstop from your city decides it. When both do, use the table below. For how both rank against the world’s best, see our best business class airlines ranking.