Review: United Airlines B787-9 Business Class (SFO-SIN)

My work trip in San Francisco had come to an end, and it was time to fly home on United Airlines flight UA1. It was a Saturday night departure, which meant landing in Singapore early Monday morning and heading straight to the office. Not the most ideal end to a trip, but at least the flight itself was something to look forward to, especially since this would be another chance to try the Polaris 2.0 suites.

I had already flown the outbound leg on United Airlines flight UA2 a week earlier, so this was a useful chance to see whether the return experience held up. It was the same aircraft type, the same cabin, and the same route, just in the other direction and on a night departure. On a flight this long, the timing makes a real difference. A 17-hour flight is one thing when you can treat it as a day in the air. It is another thing entirely when the plan is to land in Singapore, clear immigration, and head straight into the office.

Before heading to the airport, I took a Waymo from my hotel to the Grand Hyatt SFO, which is connected to the AirTrain. I have written separately about Waymo’s relatively new SFO airport service if you are curious about how that works in practice.

Check-in

United Airlines operates from the G Gates side of San Francisco International Airport’s International Terminal. This matters if you are trying to visit either the Air India Maharaja Lounge or the Air Canada Maple Leaf Lounge before your flight, since the A and G Gates are physically separate. You would either need to clear TSA separately or make a fairly long landside walk, which is not something I would want to do with bags or a tight boarding time.

United Airlines SFO check-in counters
United Airlines SFO check-in counters

Check-in itself was uneventful, which is not a bad thing when you are about to hand over three suitcases before a 17-hour flight. The priority counter was shared across Global Services, 1K, Platinum, and Business Class passengers, but there was no meaningful wait when I arrived. Bags were tagged quickly, and I was on my way to security within a few minutes.

The baggage allowance was the only part I had to think about beforehand. United’s baggage purchase summary showed six checked bags included, which looked generous at first glance. My initial read was that this might have meant six pieces for the direction I was travelling, but that would have been too good to be true.

United Airlines baggage allowance summary showing six checked bags included
United Airlines baggage allowance summary showing six checked bags included

Looking at it again, the six pieces seem to be the combined allowance across the whole itinerary, with Star Alliance Gold already accounted for. The corporate travel booking platform showing four pieces also makes sense in hindsight: that would be two checked bags each way from the Business Class fare, before the Star Alliance Gold allowance is added. United’s six-piece figure appears to be that same round-trip allowance after adding one extra Star Alliance Gold bag in each direction.

In practice, that meant three checked bags for the San Francisco to Singapore sector, which matched what I was able to check in at SFO. This is still not the clearest way for United to display it. If the number is being shown for the whole itinerary, it should really say that more plainly as it would have been on Singapore Airlines’ itinerary page. It worked out fine in my case, but if you are travelling heavy on a corporate rate, it is worth checking the allowance properly before you get to the airport.

United Airlines SFO check-in counters
United Airlines SFO check-in counters

From there, I went straight to the CLEAR+ lane with TSA PreCheck, which had virtually no one. Having both makes the security process at SFO about as painless as it gets, at least by US airport standards.

San Francisco International Airport G Gates CLEAR+ and TSA PreCheck lane
San Francisco International Airport G Gates CLEAR+ and TSA PreCheck lane

Boarding

Boarding was called in the standard United sequence, from preboarding through to the numbered groups. Polaris passengers board in Group 1. Thankfully, departure was on time at 10pm, which is always appreciated when the flight is this long and the arrival plan involves going straight to work. The week prior was also marred with last-minute cancellations.

United Airlines UA1 boarding
United Airlines UA1 boarding

The seat

This flight was operated by a Boeing 787-9 with United’s Polaris Elevated interior, the newer of the two Polaris cabin configurations currently in United’s fleet. The business class cabin is arranged in a 1-2-1 reverse herringbone layout, so every passenger has direct aisle access. The seat itself is the Adient Ascent, and with a lie-flat length of around 76 inches, it is long enough to work properly as a bed.

I covered the seat in more detail in my United Airlines flight UA2 outbound review, so I will not repeat every single feature here. Still, a few things were worth revisiting, especially because the return flight gave me a different seat and a better sense of how the product works on an overnight sector.

United Airlines UA1 Polaris business class seat 5L
United Airlines UA1 Polaris business class seat 5L

This time, I chose seat 5L. A few hours before boarding, I noticed that some Global Services members had been moved forward into the Polaris Studio seats as complimentary upgrades, which freed up some seats in the forward cabin. My flight attendant even greeted me as a Global Services member at first, which I very much wish were true, before quickly realising the mistake and correcting himself.

United Airlines Boeing 787-9 with the Polaris Elevated interiors (source: Aerolopa)
United Airlines Boeing 787-9 with the Polaris Elevated interiors (source: Aerolopa)

Seat 5L is worth flagging. On the paper boarding pass, it is listed as “NO WDW”, which meant having no window. That is technically accurate, but not quite the full story. There is half a window beside the seat, and if you position yourself forward, you can see a small sliver outside. It is not a proper window view, though, and I would not pick this seat again unless nothing better were available. On a night departure, this bothered me less than it would have during the day.

United Airlines UA1 Polaris business class seat 5L
United Airlines UA1 Polaris business class seat 5L

As on my outbound flight, a bottle of Dasani water and the Meridian headphones were already waiting in the seat console. Pre-departure drinks were served in proper glasses this time, rather than the blue plastic cups I had on the outbound leg. It is a small detail, but it does make the cabin feel a bit more polished before departure.

United Airlines UA1 Polaris business class seat 5L was marked as a no window seat
United Airlines UA1 Polaris business class seat 5L was marked as a no window seat
United Airlines UA1 Polaris business class seat console with welcome drink
United Airlines UA1 Polaris business class seat console with welcome drink

The screen is a 19-inch 4K OLED touchscreen, and it is genuinely very good for a business class seat. It is large, sharp, and responsive, which is not something I take for granted on aircraft screens. The Meridian noise-cancelling headphones are also pretty solid, and the Saks Fifth Avenue bedding, consisting of a duvet and a cooling gel pillow, remains among the better in-flight bedding I have come across.

As for the amenity kit, it was the same 100 Years of United edition that I received on the outbound segment. I had seen Reddit comments saying that the same kit had been listed on the official United Shop for US$7, which is more amusing than anything else. Amenity kits are rarely the reason to choose an airline, but it does make the special edition branding feel slightly less special.

United Airlines UA1 Polaris business class seat
United Airlines UA1 Polaris business class seat
United Airlines UA1 Polaris business class's 19-inch 4K OLED touchscreen TV
United Airlines UA1 Polaris business class’s 19-inch 4K OLED touchscreen TV

The headrest is useful if you are lounging or sitting partly upright, and the shoulder straps are required for take-off and landing. I generally prefer shoulder straps that can be tucked out of the way after take-off, and this setup was straightforward enough.

United Airlines UA1 Polaris business class seat headrest
United Airlines UA1 Polaris business class seat headrest

A pair of slippers was provided at the footwell. The footwell is partially exposed, which gives you a few extra inches of usable space and makes the seat feel less restrictive in bed mode. That matters more than it sounds like it should, because some reverse herringbone seats can feel tight around the feet once you are lying down.

United Airlines UA1 Polaris business class seat footwell with slippers
United Airlines UA1 Polaris business class seat footwell with slippers
United Airlines UA1 Polaris business class seat footwell
United Airlines UA1 Polaris business class seat footwell

The sliding suite door was still locked in the open position pending FAA certification. Even so, privacy is noticeably better than the older Polaris seats based on the photos I have seen and my own experience in this cabin. The seat shell is high enough that you do not feel particularly exposed once you settle in, especially after the cabin lights are dimmed.

United Airlines UA1 Polaris business class cabin
United Airlines UA1 Polaris business class cabin
United Airlines UA1 Polaris business class cabin
United Airlines UA1 Polaris business class cabin

I also noticed for the first time that the armrest doubles as a storage compartment, which I had somehow missed entirely on the outbound leg. It is just a small covered compartment, nothing dramatic, but it is useful for smaller items you want within reach, like a charging cable, lip balm, or earplugs.

United Airlines UA1 Polaris business class
United Airlines UA1 Polaris business class
United Airlines UA1 Polaris business class seat armrest compartment
United Airlines UA1 Polaris business class seat armrest compartment

The power outlet was slightly annoying again. My UK-style plug did not work (confirmed to be working after the flight, back in Singapore), so I had to switch to the US-style plug instead. That part was fine, but because of the size and shape of my travel adapter, I could not use it with a cable that needed to be plugged into the left side of the adapter.

This had worked on the A and D seats on the outbound flight, so the side of the aircraft matters more than you might expect. The seats are mirrored, and that changes the practical usability of the socket depending on the adapter you are carrying.

United Airlines UA1 Polaris business class power outlet
United Airlines UA1 Polaris business class power outlet

Shortly after take-off, the safety video played and included a demonstration of how to operate the suite door properly. The doors were still locked open on this flight, as they were on the outbound. It is a little odd to watch a video explaining a feature you cannot actually use yet, but at least the seat already feels private enough without it.

United Airlines UA1 in-flight safety video showing how to unlock the door
United Airlines UA1 in-flight safety video showing how to unlock the door

One other thing to be careful about is the tray table. The metal parts along the edges have some exposed sharp corners, and I managed to scrape myself while pushing my bag into the footwell and pulling my arm back out. It was minor enough that I just asked a flight attendant for a plaster, but it is worth being careful when you are rummaging around near the footwell.

United Airlines UA1 Polaris business class table latch
United Airlines UA1 Polaris business class table latch

The cabin was then dimmed for take-off, which gave the whole cabin a calmer feel once we were airborne.

United Airlines UA1 cabin dimmed during takeoff
United Airlines UA1 cabin dimmed during takeoff

About 30 minutes into the flight, the captain came on the PA to acknowledge a passenger on board who was reaching one million miles on this very flight. He described this as the longest route in the United Airlines network, and mentioned that it takes about 142 flights between Singapore and San Francisco to reach that milestone. He also said it takes an average of 14 years for United MileagePlus members to get there. It was a lovely moment to witness, especially on a route where the sheer distance is part of the story.

With the cabin dimmed, I spent a bit of time exploring the sleep features and lighting controls. I did not really try this on the outbound flight, since United Airlines flight UA2 was more of a daytime flight. On UA1, it made more sense to poke around after take-off because the whole flight was structured around sleep.

The Sleep Station feature in the in-flight entertainment system offers a few different modes, including Deep Sleep, Nature, and Cities, with both audio and video options. I did not use it for very long, but it is worth exploring if you struggle to sleep on night departures.

United Airlines UA1 Polaris business class in-flight entertainment with a Sleep Station feature
United Airlines UA1 Polaris business class in-flight entertainment with a Sleep Station feature

The seat lighting console has eight colour options, mostly United’s blues and purples with a bit of yellow and orange. I had a play around with it, though I am not sure it is of much practical use. You can also independently control the backlight on the TV, which is more useful for sleeping without the screen casting light into the suite.

United Airlines UA1 Polaris business class mood lighting control
United Airlines UA1 Polaris business class mood lighting control
United Airlines UA1 Polaris business class mood lighting control
United Airlines UA1 Polaris business class mood lighting control
United Airlines UA1 Polaris business class mood lighting control
United Airlines UA1 Polaris business class mood lighting control
United Airlines UA1 Polaris business class mood lighting control
United Airlines UA1 Polaris business class mood lighting control

The toilet was stocked with Perricone MD amenities, which is better than what I usually expect on a US carrier. It is still an aircraft toilet, of course, but the amenities at least make the premium cabin feel a bit more considered.

United Airlines UA1 Polaris business class washroom toiletries
United Airlines UA1 Polaris business class washroom toiletries

For bedding, I set the bed up myself again, which is fairly intuitive. I did not end up using the duvet because the cabin temperature was comfortable enough with just the blanket. You can also request a mattress pad, though it is not provisioned by default. I was comfortable enough without one, and the cooling gel pillow remains the standout piece of the bedding set for me, particularly on a long overnight flight where temperature makes a real difference to sleep quality.

United Airlines UA1 Polaris business class seat turned into a bed
United Airlines UA1 Polaris business class seat turned into a bed

In-flight entertainment and Wi-Fi

The IFE library was wide, with the usual mix of new releases, older films, TV series, music, and a few games. Bluetooth is supported, so you can pair your own headphones if you prefer not to use the Meridian headphones. Wi-Fi was available at US$8 for the full flight for MileagePlus members, and MileagePlus is free to join.

Given the night departure and early morning arrival, I did not spend much time watching anything. Getting the sleep timing right was the priority, so I mostly used the screen for the flight map and service timeline rather than for movies.

Likewise, I did pay US$8 for the Wi-Fi to catch up on some work. I was also relatively lucky that I didn’t encounter much issues with the Wi-Fi over the Pacific, as what was recently reported that United is having a number of issues with its Wi-Fi system.

United Airlines UA1 Polaris business class in-flight entertainment
United Airlines UA1 Polaris business class in-flight entertainment

Food and drinks

For this particular flight, I felt the service was average rather than memorable. That stood out more because my inbound segment had been much better, with the flight attendant serving my aisle going above and beyond what I expected. This crew was not bad, but it was also fairly procedural.

The service timeline was available through the in-flight entertainment system, which I found useful on a flight this long. For United Airlines flight UA1, meal service was scheduled to begin within 30 minutes of take-off, with lights turned off within two hours. The cabin would then stay dark until around the 14-hour mark, when breakfast would begin. In between, passengers could request mid-flight snacks or tapas.

United Airlines UA1 Polaris business class service timeline
United Airlines UA1 Polaris business class service timeline

Dinner

We were first served mixed nuts, along with drinks, and I chose a glass of Laurent-Perrier La Cuvée Champagne.

United Airlines UA1 Polaris business class mixed nuts service with champagne
United Airlines UA1 Polaris business class mixed nuts service with champagne

The starter was oak roasted hot smoked salmon with lentil tabbouleh and dill-date vinaigrette, served with garlic bread and a salad. The salmon was fine, and the lentil tabbouleh gave the plate a bit more texture than the usual business class smoked fish starter. It was not something I would remember weeks later, but it was a decent start to the meal.

United Airlines UA1 Polaris business class dinner meal service
United Airlines UA1 Polaris business class dinner meal service

For the main course, I had the centre cut sirloin with potato gratin, sauteed Swiss chard, zucchini, and bordelaise sauce. This was on the drier side, honestly. United’s steak seems to be something of a lottery, and this one was average, if not below average. The potato gratin helped, but I would probably try one of the other options next time rather than gamble on the beef again.

United Airlines UA1 Polaris business class dinner meal service
United Airlines UA1 Polaris business class dinner meal service

The United signature sundae was noticeably creamier than what I had on the outbound flight, which is interesting given that it should have been the same Tillamook vanilla bean ice cream. I went with everything except whipped cream.

One thing to keep in mind: request the sundae as soon as it is offered. By mid-flight, it will have melted and is no longer available. Getting it early makes a real difference, and in this case, it was easily the best part of dinner.

United Airlines UA1 Polaris business class signature Polaris sundae
United Airlines UA1 Polaris business class signature Polaris sundae

Mid-flight snack

The self-serve galley between cabins had the same setup as the outbound flight: chips, water, and fruit, with tapas available on request from the crew. I skipped the tapas this time. After dinner, I was more interested in sleeping than testing every possible snack option, though I did appreciate being able to grab water without waiting for a crew member.

United Airlines UA1 Polaris business class snacks
United Airlines UA1 Polaris business class snacks

Breakfast

Before landing, I had the prawn congee with fruit and yoghurt with jam. It was decent, nothing particularly exciting, but a reasonable enough option before arrival. Accompanied my breakfast was an Illy cold brew with a dash of milk.

For a pre-landing meal after a long overnight flight, I would rather have something simple and warm than something ambitious that does not quite work.

United Airlines UA1 Polaris business class breakfast meal service
United Airlines UA1 Polaris business class breakfast meal service

Arrival

As we descended into Singapore, the cabin lights came up gradually. I always appreciate this on an overnight flight, because there are few things more unpleasant than being shocked awake by full cabin lighting after you have finally managed to sleep.

United Airlines UA1 Polaris business class
United Airlines UA1 Polaris business class

We landed in Singapore and had to taxi across the bridge to get to Terminal 2.

United Airlines UA1 landing in Singapore
United Airlines UA1 landing in Singapore

On disembarkation, I took the chance to walk to the front of the aircraft and have a proper look at the Polaris Studio seats at 1F and 1L. These had been occupied throughout the outbound flight, so I had not been able to see them properly then. The Studio seats are the bulkhead suites, and they are considerably more spacious than the standard Polaris seats, with 27-inch screens and companion ottomans.

United Airlines UA1 Polaris Studio seat 1F
United Airlines UA1 Polaris Studio seat 1F

They look like a very different experience from the standard Polaris suites. I would not pay an unreasonable premium for them, but on a route as long as San Francisco to Singapore, I can absolutely understand the appeal if the price difference is sensible or if you manage to get moved forward. I did check the United app occasionally and saw that the upgrade costs ranged between US$499 to US$799. They were also free for United Global Services members.

United Airlines UA1 Polaris Studio seat 1L
United Airlines UA1 Polaris Studio seat 1L

Concluding thoughts

For a US carrier, the experience on United Airlines flight UA1 is really not bad at all. The Polaris Elevated interior holds up well, the bedding is genuinely good, and the night departure on a 17-hour flight works in its favour. I slept better on this sector than I expected, which is ultimately what matters most when the next stop after landing in Singapore is the office.

There were still some misses. Seat 5L is not one I would choose again, the steak was average, the power outlet situation was annoying with my adapter, and the sharp tray table edge was an unpleasant surprise. Service was also less engaging than what I had on United Airlines flight UA2. The suite doors are still locked open for now, so the product is not operating at its full potential yet.

Even with those caveats, this was a strong flight overall. The seat felt modern, the privacy was noticeably better than the older Polaris cabin, and the sundae did a decent amount of work in redeeming the meal service after the steak.

If you are deciding between United Airlines flight UA1 or UA29 for the San Francisco to Singapore route, I would choose UA1 if the Polaris Elevated interior matters to you. At the time I checked, UA29 was still showing the older Polaris hard product, with the Elevated interior only expected around August 2026. As always, check the seat map before booking, because aircraft swaps happen, as is the case for this route in recent months. But if the choice is between old Polaris and the newer Elevated cabin, UA1 is the one I would pick.

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