What aircraft does UA27 use?

United Airlines flight UA27 operates on a Boeing 787-9 from DEN to LHR.

How long is the UA27 flight?

The estimated flight time for UA27 from DEN to LHR is approximately 9h 52m covering 7,496 km (4,658 miles).

How many seats does this Boeing 787-9 have?

This United Airlines Boeing 787-9 has 236 total seats across 2 cabin classes: Business, Economy.

What cabin classes are available on this aircraft?

This Boeing 787-9 offers 2 cabin classes: Business, Economy. Seat distribution: 48 Business seats, 188 Economy seats.

What route does UA27 fly?

United Airlines flight UA27 operates from DEN (Denver International Airport) to LHR (London Heathrow Airport), connecting Denver and London.

How do I choose the best seat?

The best seat depends on your priorities. For extra legroom, choose seats near emergency exits or bulkhead rows. For quick boarding/deplaning, select seats near the front. Avoid seats near lavatories or galleys if you prefer a quieter flight. Window seats offer views and a wall to lean against, while aisle seats provide easier access to move around.

What do the different seat colors mean?

Green seats are typically available for selection, red seats are occupied or blocked, yellow/orange seats may have restrictions or extra fees, and blue seats often indicate premium or preferred seating with additional charges. Hover over any seat to see specific details and pricing.

Can I change my seat after booking?

Yes, most airlines allow seat changes after booking, though fees may apply depending on your fare type and desired seat. You can typically change seats through the airline's website, mobile app, or by calling customer service. Some seats become available closer to departure as the airline releases blocked inventory.

When is the best time to select seats?

The best time varies by strategy. Book immediately after purchasing your ticket for the widest selection, or wait until 24 hours before departure when airlines often release blocked premium seats. For popular routes, early selection is recommended. Our seat alerts can notify you when preferred seats become available.

Are the seat maps updated in real-time?

Our flight seat maps are updated regularly throughout the day to reflect current availability. However, seat availability can change rapidly, especially close to departure. We recommend checking the airline's official website for the most up-to-date information when making your final selection.

What if my preferred seat isn't available?

You can also check back periodically as seats often open up closer to departure when other passengers make changes or when the airline releases additional inventory.

UA27 Seat Map

● On time

United Airlines · Boeing 787-9 · Sat, 11 Apr 2026

Depart

DEN · Denver

9h 52m

4,658 mi

Arrive

LHR · London

+ Seat alert

J · Business

19/48

Y · Economy

96/188

Filter:

First Business Premium Economy Economy Extra legroom / exit Occupied Blocked

View:

Business · Economy · Rows 1–57

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Get seat alerts

Top picks · Economy

Highest-scoring available seats on this aircraft

42A

Score 67 #1

Quick exit access · Premium seat

Extra legroom

42J

Score 67 #2

Quick exit access · Premium seat

Extra legroom

42K

Score 67 #3

Quick exit access · Premium seat

Extra legroom

Score 68 #4

Easy aisle access · Near wings (smoother ride)

Aisle Business

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UA27 Flight Details

Flight Number: UA27

Origin:

(Denver International Airport, Denver)

Destination:

(London Heathrow Airport, London)

Distance: 7,496 km (4,658 mi)

Est. Duration: 9h 52m

Flight Date: April 11, 2026

Aircraft: Boeing 787-9

Airline Routes: View United Airlines route map

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Flight Route Map

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Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: United Airlines (UA)
Aircraft: Boeing 787-9
Seating: Main Deck: 236 seats

Economy: 188

96 92 0

51% Available

Business: 48

19 29 0

40% Available
Legend: Seat Status

Blocked

Occupied

Standard

Cabin Classes

First

Business

Premium Economy

Economy

Extra legroom / exit

Features

Exit door

WC Lavatory

GALLEY Galley

CREW Crew area

United Airlines Boeing 787-9 seat map layout for flight UA27 from DEN to LHR — Reference layout

This Boeing 787-9 operates United Airlines flight UA27 from Denver (DEN) to London (LHR). Browse the interactive seat map above to find the best seats for your journey, view real passenger reviews, and explore detailed cabin configurations to make an informed decision for your flight.

Best Seats on UA27

Based on legroom, location, and passenger preferences

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Best Aisle Seats

Seat 9A Business
Seat 9D Business
Seat 9F Business

Best for Legroom

Seat 42A Economy
Seat 42J Economy
Seat 42K Economy

Exit Row Seats

Seat 42A Economy
Seat 42J Economy
Seat 42K Economy

Quietest Seats

Seat 9A Business
Seat 9D Business
Seat 9F Business

Recommendations based on seat characteristics, cabin position, and proximity to facilities. Availability may vary by date.

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Seat Selection Assistance

Seat Alerts Require Payment

Seat alerts are available to users with a paid plan or credits. This feature monitors seat availability and notifies you when your preferred seats become available.

Reviews

Passenger Reviews for UA27

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Boeing 787-9 Seat Map

Full United Airlines Boeing 787-9 seating chart, cabin layout, and seat reviews.

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UA27 Seat Map

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UA27 Flight Details

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Aircraft Configuration

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Best Seats on UA27

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Best Aisle Seats

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Passenger Reviews for UA27

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