The U.S. airline hubs are changing
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How the big ten markets of the big four airlines in the U.S. have changed since 2019
The Big Four airlines in the U.S. have come a long way since COVID. Looking at seats deployed, you can begin to see the structural differences in how the airlines have approached the post-pandemic world. The stories are quite simple:
For Delta Air Lines, the middle of the network has experienced the steepest loss in seats since 2019, while the East Coast has attracted the Widget’s attention. Yet Boston – a surprise to us – is up 28%.
United is growing Denver and Newark while the West Coast suffers from the transpacific lag. Didn’t expect Newark to have grown so much? Seats, not flights. We’ll explain later.
American is retrenching into fortress hubs, boosting DFW, CLT, and MIA – largely at the expense of ORD, PHL, and LAX. But the 40% growth in JFK stands out as a strategic move worthy of review (and ultimate rejection) by a grumpy judge.
Conversely, Southwest is on the move, growing each of its top 10 markets, save for Houston Hobby. Denver, again, emerges as a leader in growth, benefiting from the strong geographic presence in the domestic network.
But Southwest’s differing chart also hints at another dynamic at play. The size of aircraft and the distance they are flying are having a distinct effect on the market. Considering how the change in flights differs from the change in seats and available seat miles (ASMs), the trend of bigger/further is accelerating.
Up and to the right
When we compare the change in flights, seats, and ASMs since 2019 for the top markets, a clear trend appears – up and to the right. More accurately, bigger, further.
Flights are down, but aircraft are larger. For instance, Delta’s average seat gauge in Atlanta has increased from 145 seats to 165 seats per departure during Q3. But ASMs have fared even better as larger aircraft are deployed on longer routes.
That has led to the accelerated trend of bigger, further. Southwest stands out as not being as affected by the up gauging and longer flights, even though the airline continues to take delivery of their largest model, the 175-seat 737-8.
Still, the trend is remarkably consistent across the airlines’ top 10 markets. Flights are down; seats are up, and ASMs are upper.
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