Compare U.S. airlines head-to-head · United Flight Tracker

Carrier A

VS

Carrier B

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United Airlines

Legacy

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All-Time Passengers

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VS

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Delta Air Lines

Legacy

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All-Time Passengers

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Head-to-Head Metrics

Green highlight = better value per metric. Higher is better for most; margin/efficiency metrics noted where lower is better.

Metric UA DL

Monthly Capacity Overlay

Last 36 months of available seat data — both carriers overlaid in their brand colors.

Carrier A

Carrier B

Shared Routes

City pairs where both carriers appear in their respective top-12 route lists — side-by-side passengers and route share.

Route Carrier A Pax Carrier B Pax Combined

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Operating Profile

Gauge × Stage shows aircraft utilization strategy. Revenue × Margin (when financials available) shows profitability positioning.

Gauge vs. Stage Length

Revenue vs. Net Margin