United Airlines Seat Selection and Upgrade Guide: Economy Plus,
Polaris and Fare Rules
Based on publicly available United Airlines seating policy information. Always verify directly with United Airlines before travel.
Last Updated: March 2026
Quick Answer: United Airlines Seat Selection
Most United Airlines passengers can select seats at the time of booking or afterwards through the My Trips section on United’s website or mobile app. Basic Economy fares generally do not include free advance seat selection, passengers can either purchase a seat during booking or receive an automatic assignment at check-in based on remaining availability.
United Airlines seat selection and upgrade options depend on the fare type purchased, route, and cabin class. Passengers on most fares can choose their seats during booking or later through the My Trips section on United’s website or mobile app. Basic Economy fares have different rules and may not include advance seat selection.
This guide explains how United Airlines seat selection and upgrade options work, what seating choices are available, how upgrades are structured, and what MileagePlus members can expect.
United Airlines Seat Selection Rules by Fare Type
Standard and Premium Fares: Passengers on most fare types except Basic Economy can select or change seats during booking or at any point before departure through the My Trips section on united.com or the United app.
Basic Economy : Basic Economy passengers generally cannot select seats for free in advance, but may purchase a seat assignment during booking or before check-in. If no seat is purchased, one is automatically assigned at check-in based on remaining seat availability.Travelers on Basic Economy who want to choose their seat should do so during booking or before check-in opens.
Travelling with Children: United’s family seating policy allows children under 12 to be seated adjacent to a travelling adult on the same booking at no extra charge, subject to availability. This applies across fare types.
Seat Changes: Seat assignments are not always guaranteed. Operational requirements or aircraft changes may result in seat reassignments. Passengers can manage or update their seat selection through the United app or website.
Seat Types Available on United Airlines
United Airlines offers several seating options depending on the aircraft and cabin configuration.
Standard Economy Seat: Standard seats in the United Economy cabin are included with most fares except Basic Economy seat assignments that are automatically allocated.
Preferred Seats: Preferred seats are located closer to the front of the economy cabin and may allow quicker exit after landing. These seats may require an additional fee depending on fare type.
Economy Plus Seats: Economy Plus seats provide additional legroom compared with standard economy seats. These seats may be purchased during booking or later through the seat map.
Premium Cabins: Premium cabins on United include:
- United Premium Plus (premium economy)
- United First (domestic premium cabin)
- United Polaris (long-haul business class)
United Airlines Seat Upgrade Options and Costs
| Option | Who It Applies To | The Details |
| Paid Cabin Upgrades | All passengers | Pay cash or miles to upgrade to Premium Plus, First, or Polaris if seats are open; available on the app or website from booking. |
| PlusPoints for Members | MileagePlus elite members | Use points to upgrade on United flights and partner airlines. Helpful for award ticket holders seeking cabin upgrades. |
| Economy Plus Seats | Elites and other passengers | Extra legroom; free for elites, others can buy anytime; costs $30–150 or a yearly subscription. |
| When to Upgrade | All passengers | Book early or check until check-in; monitor app for deals; no guarantees, elites go first. |
Before selecting seats, travelers may also want to review our United Airlines baggage rules guide.
Note: PlusPoints requirements and pricing are dynamic and may vary by route, demand, and fare class. Confirm current upgrade pricing directly with United Airlines before travel.
Steps to Upgrade
Access your reservation details.
Review cash/miles/PlusPoints offers.
Complete payment and verify your seat.
For Polaris, 1K members get instant on full-fare Economy.
United MileagePlus Elite Benefits for Seat Selection
Passengers with MileagePlus Premier status may receive seat selection benefits depending on their tier level.
- Premier Silver —Complimentary Economy Plus seating on United-operated flights, typically at check-in, where available.
- Premier Gold — Complimentary Economy Plus seating; priority access to preferred seats
- Premier Platinum — Complimentary Economy Plus seating across a broader range of routes; higher upgrade priority
- Premier 1K — Highest upgrade priority across United’s network; instant upgrade eligibility on select full-fare economy tickets to Polaris on qualifying routes
Elite upgrade processing follows a priority order based on status tier, fare class, and other priority factors such as time of request. Complimentary upgrades are not guaranteed and depend on seat availability at the time of processing. Passengers should confirm current benefits through their MileagePlus account before travel.
For a broader comparison of how airline loyalty programmes affect seating, see our airline seat selection and upgrade guide.
How United Seat Maps Work
United Airlines seat maps give passengers a clear view of available seats before making a selection. The map displays the cabin layout, Economy Plus legroom seats, preferred seats toward the front of the aircraft, and premium cabins including Polaris. Checking the seat map before confirming a seat can help travelers find options with more space or better privacy based on the specific aircraft configuration.
United Airlines Premium Cabin Options
United Polaris
- Best for: Long-Haul International
- Seating: Lie-flat seats, often in a 1-2-1 or 1-1-1 layout, providing full beds for sleep.
Amenities: Priority services, Polaris lounge access (dining, showers), Saks Fifth Avenue bedding, amenity kits, larger screens, and upgraded dining.
United First or Business
- Best for: Domestic and Shorter International.
- Seating: Reclining seats, not fully flat.
Experience: A step up from economy but less luxurious than Polaris.
Tips for Choosing Seats on United Airlines
- Book Economy Plus early, particularly on longer domestic routes, to secure extra legroom seats before availability reduces closer to departure.
- Frequent United flyers may find an Economy Plus subscription more cost-effective than paying per flight.
- MileagePlus elite members should review their complimentary seat benefits before paying for upgrades — these may already be included.
- Basic Economy passengers should check in as close to the 24-hour window as possible for better automatically assigned seat options.
- On international routes, reviewing the aircraft seat map before selecting can help identify window seats with greater privacy in Polaris.
For general travel preparation guidance, see our airline travel tips guide.
Frequently Asked Questions (FAQ)
What is a premium cabin on United Airlines?
United Airlines offers two main premium cabins: United Premium Plus (premium economy) and United Polaris (business class designed for long-haul international flights).
What are the best seats on United Polaris?
Seat preference often depends on the traveler. Solo travelers may prefer window seats for additional privacy, while couples often choose middle seats that allow the divider to be lowered.
What is the difference between a United Club and a United Polaris Lounge?
United Polaris lounges are designed for long-haul international business class passengers and offer premium services such as full dining, showers, and quiet suites.
United Clubs are standard airport lounges available to eligible members, credit card holders, and certain premium passengers. Amenities generally include snacks, drinks, seating areas, and business facilities.
Can I choose my seat after booking a United Airlines flight?
Yes. Passengers can usually choose or change seats after booking by visiting the “My Trips” section on united.com or through the United mobile app. Seat availability may depend on fare type and the remaining seats on the aircraft.
Does United Polaris have lie-flat seats?
United Polaris features fully lie-flat seats designed for long-haul international flights.
Key features include:
- Full flat-bed seating
- Premium bedding from Saks Fifth Avenue
- Slippers and amenity kits on select routes
- Pajamas available on request on certain long-haul flights
Is access to the United Polaris Lounge free?
Access to United Polaris lounges is included for passengers traveling in United Polaris business class on eligible long-haul international flights. Some Star Alliance First or Business Class passengers may also receive access depending on their itinerary.
Do passengers receive pajamas on United Polaris flights?
Yes. Pajamas are provided on select long-haul United Polaris routes. Availability may vary depending on the flight distance and aircraft type.
MyBaggageInfo provides independent travel guidance and is not affiliated with United Airlines.
Content reviewed by MyBaggageInfo travel research team using publicly available airline policy information.
Disclaimer : All information on MyBaggageInfo is provided for general travel guidance only. Airline policies, baggage rules, and fees can change at any time without prior notice. While we strive to keep our content accurate and updated, travelers should always verify details directly with the airline before their journey. MyBaggageInfo is not responsible for any errors, delays, or decisions made based on the information provided.
