UA
United Airlines Boeing 787-9 Dreamliner
United 787-9 Polaris · 244 seats · Polaris Business / Premium Plus / Economy Plus / Economy
Polaris Business24 seats
42" pitch · 20" widePremium Plus30 seats
38" pitch · 18.5" wideEconomy Plus30 seats
38" pitch · 18.5" wideEconomy160 seats
31" pitch · 17" wideCross-referencedUpdated Feb 2026Active as of Feb 2026
Best seats:1A1C1D1F2A2F+140 more great seats
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Quick Guide
Green = Best seats with extra legroom or great views
Blue = Good seats with above-average comfort
Amber = Some trade-offs (limited recline, etc.)
Red = Avoid if possible (no recline, cramped)
Cabin Classes
Polaris Business
24 seats · 42" pitchPremium Plus
30 seats · 38" pitchEconomy Plus
30 seats · 38" pitchEconomy
160 seats · 31" pitchAbout the United Airlines Boeing 787-9 Dreamliner
This United Airlines Boeing 787-9 Dreamliner features 244 seats in a Polaris Business / Premium Plus / Economy Plus / Economy configuration. Our analysis has identified 146 seats rated as "Best" or "Good" for comfort and convenience.
Polaris Business class offers 24 seats with 42" seat pitch and 20" width. Premium Plus class offers 30 seats with 38" seat pitch and 18.5" width. Economy Plus class offers 30 seats with 38" seat pitch and 18.5" width. Economy class offers 160 seats with 31" seat pitch and 17" width. Use the interactive seat map above to explore each cabin class and find the best seat for your next flight.