Table of Contents
Pick premium economy for an overnight long-haul flight when it costs less than about 1.5 times the economy fare. You get 7 more inches of legroom, a seat almost 2 inches wider, twice the recline and about 35% more personal space. Stay in economy on daytime or shorter flights, or when premium economy costs close to double.
Below, the two cabins are compared on the seat, sleep, bags, food, price and the new Basic fares, using the airlines’ own cabin tables as of September 2026. For how all the cabins and fare codes fit together, see our guide to flight classes and their codes.
| Criterion | Premium economy | Economy | Edge |
|---|---|---|---|
| Seat pitch (legroom) | 38 in on United’s 787-9 and Delta’s A330-900 | 31 in on United; 31 to 33 in on Delta | Premium economy |
| Seat width | 19 in on United; 18.5 in on Delta | 17.3 in on United; 18 in on Delta | Premium economy |
| Recline | 6 in on United; up to 7 in on Delta | 3 in on United | Premium economy |
| Seats per row, United 787-9 | 7 (2-3-2) | 9 (3-3-3) | Premium economy |
| Personal space (width x pitch, United 787-9) | 722 sq in | 536 sq in | Premium economy (+35%) |
| Free checked bags | 2 on standard fares; 1 on the new Basic fares (United, Delta) | Depends on route and fare; United raised many long-haul bag fees for tickets bought from May 12, 2026 | Premium economy |
| Airport | Priority check-in, security and boarding (United Premier Access, Delta Sky Priority) | Standard lines | Premium economy |
| Round-trip fare, US to Europe | About $1,200 to $2,000 | About $750 to $1,000 | Economy |
| Seats per aircraft | 21 of 257 on United’s 787-9; 28 of 281 on Delta’s A330-900 | 149 on United’s 787-9; 168 on Delta’s A330-900 | Economy |

How we compared
Seat dimensions come from the airlines’ own cabin tables, opened on September 23, 2026: United’s Boeing 787-9 (version 1: 48 Polaris, 21 Premium Plus, 39 Economy Plus, 149 Economy) and Delta’s Airbus A330-900 (29 Delta One, 28 Premium Select, 56 Comfort, 168 Main). Personal space is seat width times seat pitch, a rough floor-area measure: 19 x 38 = 722 square inches against 17.3 x 31 = 536.3, or 35% more. The fare ranges are Simple Flying’s April 2026 transatlantic round-trip figures. Price per extra inch splits the $400 to $1,000 round-trip gap over two flights and 7 extra inches: $200 / 7 = $29 up to $500 / 7 = $71 per inch, per flight. Fares vary by date and route; these are ranges, not quotes.
Legroom, width and recline

The seat is the whole case for premium economy, and United’s own table for its Boeing 787-9 shows it cleanly. Premium Plus gets 38 inches (97 cm) of pitch against 31 inches (79 cm) in Economy, on the same aircraft.
Width moves less. The Premium Plus seat is 19 inches (48 cm) between the armrests, and the Economy seat is 17.3 inches (44 cm). Recline doubles, from 3 inches to 6 inches.
The reason is the row. Premium Plus is laid out 2-3-2, seven seats across, while Economy is 3-3-3, nine across in the same cabin. Fewer seats in the row is where the extra width and the wider armrests come from.
Delta’s Airbus A330-900 is closer. Premium Select is 18.5 inches wide with 38 inches of pitch, while Main is 18 inches wide with 31 to 33 inches. On that jet the gain is legroom and recline, not width.
Myth: Economy Plus is premium economy
It is not. On United’s 787-9, Economy Plus gives 34 inches of pitch, but it is the same 17.3-inch Economy seat, nine across, with 4 inches of recline. Premium Plus is a different seat: 19 inches wide, seven across, 38 inches of pitch and 6 inches of recline. Delta Comfort works the same way: on the A330-900 it is 18 inches wide, exactly like Main, with 34 inches of pitch.
Edge: premium economy. It wins every seat measure, by 7 inches of legroom and about 35% more personal space on United’s 787-9.
Can you sleep in premium economy?
Better than in economy, but it is still an upright seat, not a bed. The lie-flat seat starts one cabin further forward, in business class.
What helps is the lower half. Delta’s Premium Select seat has a fold-out adjustable footrest and leg rest, and American’s new 787-9 lists adjustable calf and footrests plus headrest wings for privacy. Delta notes the foot and leg rest are missing on its 757-200, 737-800 and 737-900ER.

Bedding comes with it on long flights. United lists Saks Fifth Avenue bedding, and Delta a memory-foam pillow, a blanket and noise-canceling headphones. Economy’s 3 inches of recline and nine-across row are the main reason sleep is hard back there.
Edge: premium economy. A leg rest, twice the recline and a seven-across row make an overnight flight far easier, even without a bed.
Bags, boarding and the airport
Premium economy starts before the flight. United Premium Plus includes Premier Access, meaning priority check-in, security lanes, boarding and bag delivery. Delta Premium Select gets Sky Priority, which covers the same four steps.
Bags are the other hard benefit. United’s standard and flexible Premium Plus fares include two checked bags, and its cheapest Premium Plus fare includes one. In economy, the allowance depends on the route and the fare, and United raised many bag fees between the US and Europe, Asia, Africa and South America for tickets bought from May 12, 2026.
Lounges are not part of the deal. As AFAR reported, Delta’s Premium Select fares, Basic or not, do not include Sky Club access. American lets status members upgrade into premium economy for free on flights within North America when seats are open.
Edge: premium economy. Priority lanes and a second free bag have a cash value that economy passengers pay for separately.
Food, screens and amenities
All three big US airlines describe an upgraded meal service in premium economy. American calls it chef-inspired, with complimentary beer, wine and spirits on flights with full drink service. United adds upgraded dishware, and Delta a hot towel and meals you can pre-order up to 24 hours before departure.
Screens are bigger too. Delta fits a 13.3-inch seatback screen in Premium Select on its widebodies, and United lists a 13-inch screen in Premium Plus. Both hand out an amenity kit on long-haul flights.
Edge: premium economy. Nice to have, but nobody should pay the fare difference for the meal alone.
The price gap, and what an inch costs

Premium economy usually costs about 1.4 to 2 times the economy fare, according to Simple Flying’s April 2026 fare review. Between the US and Europe, it put economy at about $750 to $1,000 round trip and premium economy at about $1,200 to $2,000.
That gap, $400 to over $1,000 round trip, is $200 to $500 per flight. Divided by the 7 extra inches of legroom, each inch costs roughly $29 to $71 per flight.
Timing matters too. The same review found premium economy fares can rise by as much as 100% in peak periods such as summer transatlantic travel, while economy rises 30 to 40%. The upgrade is cheapest, relatively, outside those peaks.
Premium economy is a small cabin
United’s 787-9 carries 21 Premium Plus seats against 149 in Economy, just 8% of its 257 seats. Delta’s A330-900 has 28 Premium Select seats out of 281, and American’s new 787-9 has 32 out of 244. On a full flight, the cheap premium economy fares are the first to go.
Edge: economy. Premium economy costs 1.4 to 2 times as much for the same flight, and economy has six to seven times as many seats to choose from.
Where you can buy premium economy

Premium economy is mostly a long-haul, widebody product. United sells Premium Plus on all of its widebody aircraft on international routes, and only on some domestic flights.
Delta sells Premium Select on most long-haul international routes and select domestic routes. On its narrowbody 757-200, 737-800 and 737-900ER, the cabin comes without the foot and leg rest, the 13.3-inch screen and the noise-canceling headphones.
American lists Premium Economy on four widebody types: the 777-300, the 777-200, the 787-9, and the 787-8 on international flights and to Alaska. Its newest 787-9, first delivered in April 2025, carries 32 Premium Economy seats with privacy headrest wings and wireless charging.
Economy, by contrast, is on every flight. On a short domestic hop, the question of premium economy usually does not come up, because the cabin is not sold there.
Edge: economy. It is on every route, while premium economy is limited to long-haul widebodies and a few domestic flights.
The new Basic premium economy fares
In 2026, premium economy got its own basic fare. United introduced three Premium Plus fare options from spring 2026, and the cheapest one includes one checked bag instead of two, charges for seat selection and cannot be upgraded or refunded.
Delta followed on July 8, 2026 with Delta Premium Select Basic, flying from September on select long-haul routes. The seat is identical, but you get it assigned after check-in, one fewer checked bag, fewer miles, no upgrades and changes only for a fee.
“This expansion gives customers more ways to choose the Delta experience that best fits their trip, and a new way to access our premium tier products.”
Joe Esposito, Delta executive vice president and chief commercial officer, Delta News Hub, July 2026
For a couple, the seat assignment is the catch. Two Basic Premium Select passengers may not sit together unless they pay for seats, and a single second bag can erase much of the saving over a standard fare.
Edge: premium economy. Basic fares narrow the price gap for solo travelers with light bags, and the seat is the same as on a full fare.
Who should pick which
| If you… | Pick | Because |
|---|---|---|
| Fly overnight and need to work or sleep on arrival | Premium economy | Twice the recline, a leg rest and 7 more inches of legroom |
| Are tall or broad-shouldered | Premium economy | 38 in of pitch and a seven-across row |
| Check two bags anyway | Premium economy, standard fare | Two free bags plus priority handling |
| Fly a daytime flight you can sit through | Economy | The fare gap buys comfort you will not use for sleep |
| See premium economy near 2 times economy | Economy | At that multiple, each extra inch runs toward $71 per flight |
| Travel as a pair on a tight budget | Economy, or standard premium economy | Basic premium economy seats are assigned at check-in |
| Want a flat bed | Neither | Only business class lies flat |
If you are weighing the next cabin up instead, our first class vs business class comparison covers where the lie-flat seats start. And for which of the big three US airlines to fly in the first place, see Delta vs United vs American.
FAQ
Sources and references used for research and fact-checking.
- United Airlines, Boeing 787-9 Dreamliner seat map and interior specifications
- United Airlines, United Premium Plus
- United Airlines, Checked bags
- Delta Air Lines, Airbus A330-900neo seat maps, specs and amenities
- Delta Air Lines, Delta Premium Select
- Delta Air Lines, Delta Premium Select (agency product page)
- Delta News Hub, What to know about Delta's expanded Basic fare options, available now
- AFAR, Delta Unveils New Basic Business Tier Fares
- American Airlines, Premium Economy seats
- American Airlines, Presenting the premium Boeing 787-9 (fact sheet)
- Simple Flying, The Cost Of Flying Premium Economy In 2026 Compared To Economy
Get the Newsletter
The latest aviation news and stories sent to your inbox.
About the Author
Tim is the owner and lead editor of AeroCorner since 2019, overseeing aviation content covering aircraft, airlines, airports, and the broader aviation industry. Through years of researching, writing, editing, and publishing aviation-focused content, he has developed extensive practical knowledge of commercial aviation and air travel. Based in Asia and a frequent traveler himself, Tim also brings firsthand passenger experience to AeroCorner’s coverage. Outside of publishing, he has also explored aviation firsthand through hands-on flight training in New Zealand.