Delta Air Lines operates a fleet of 240 Boeing 737 aircraft across multiple types, of which 163 are Boeing 737-900ERs, with an average age of 9.2 years. With the type’s maximum range of 2,950 nautical miles (3,390 miles), Delta primarily operates the type on numerous short-to-mid-range routes.
Delta operates out of its nine hub airports, including Seattle Tacoma International Airport (SEA) in Washington. Located approximately 14 miles (23 km) south of downtown Seattle and 18 miles (29 km) northeast of downtown Tacoma, the airport serves the region surrounding the two cities. It is the busiest airport in the Pacific Northwest region and a hub for Delta and Alaska Airlines.
Based on the data from Cirium, an aviation analytics company, this article explores Delta’s most popular Boeing 737-900ER routes from Seattle this month.
Delta’s Boeing 737-900ER: Three configurations
173 seats: 12 Domestic First, 24 Delta Comfort+, 162 Main Cabin
Domestic First
- 12 seats configured 2-2
- Seat width: 20.9"
- Seat pitch: 37"
- These seats are not equipped with power sockets
Delta Comfort+
- 24 seats configured 3-3, located at rows 10 to 13
- Seat width: 17.3"
- Seat pitch: 34"
- These seats are not equipped with power sockets
Main Cabin
- 162 seats configured 3-3
- Seat width: 17.3"
- Seat pitch: 32"
- These seats are not equipped with power sockets
180 seats: 12 Domestic First, 6 Delta Comfort+, 162 Main Cabin
Domestic First
Delta Comfort+
- 6 seats configured 3-3, located at row 10
- Seat width: 17.3"
- Seat pitch: 34"
- Touch screen display
- Each seat is equipped with a USB-A port
Main Cabin
- 162 seats configured 3-3
- Seat width: 17.3"
- Seat pitch: 32"
- Touch screen display
- Each seat is equipped with a USB-A port
180 seats: 20 Domestic First, 21 Delta Comfort+, 139 Main Cabin
Domestic First
- 20 Zodiac 6810 recliner seats configured 2-2
- Seat width: 20.9"
- Seat pitch: 37"
- Touch screen display
- Each seat has a USB-A port and a universal AC power socket
Delta Comfort+
- 21 Collins Aersopace Pinnacle slimline seats configured 3-3, located at rows 10 to 13
- Seat width: 17.3"
- Seat pitch: 34"
- Touch screen display
- Each seat has a USB-A port and shared access to a universal AC power socket
Main Cabin
- 139 Collins Aerospace Pinnacle slimline seats configured 3-3
- Seat width: 17.3"
- Seat pitch: 31"
- Touch screen display
- Each seat has a USB-A port and shared access to a universal AC power socket
7 Seattle (SEA) <> Salt Lake City (SLC)
Flight distance: 689 miles
- Number of round-trip seats: 18,000
- Available Seat Miles (ASMs): 12.4 million
At the bottom of our list of the most popular Delta Air Lines Boeing 737-900ER routes connects its major hub in Seattle to Salt Lake City (SLC) in Utah, with a distance of 689 miles. The airline operates these two-hour-10-minute flights multiple times a day using a variety of aircraft.
A few of those flights see the carrier’s Boeing 737-900ER fleet, featuring between 173 and 180 seats. Alaska Airlines also operates the route multiple times daily using its Boeing 737s and Embraer ERJ-175 aircraft fleet.
Delta’s codeshare partners, including Aeromexico, KLm, and Korean Air, market and sell tickets on this route.
6 Seattle (SEA) <> Los Angeles (LAX)
Flight distance: 954 miles
- Number of round-trip seats: 21,240
- Available Seat Miles (ASMs): 39 million
Another popular route from Seattle operated by Delta's 737-900ER is Los Angeles (LAX), which is 954 miles away. The airline operates this two-hour-45-minute hop multiple times a day using various aircraft, including the carrier’s Boeing 737-900ER fleet.
In addition to Delta, American Airlines, United, and Alaska Airlines also operate the route multiple times daily using various narrowbody jets.
5 Seattle (SEA) <> Palm Springs, California (PSP)
Flight distance: 987 miles
- Number of round-trip seats: 10,080
- Available Seat Miles (ASMs): 10 million
Additionally, Alaska Airlines operates the route multiple times daily using multiple types of narrowbody jets.
4 Seattle (SEA) <> Minneapolis (MSP)
Flight distance: 1,399 miles
- Number of round-trip seats: 28,080
- Available Seat Miles (ASMs): 39 million
Delta Air Lines connects its Seattle hub to another of its major hubs at Minneapolis St. Paul International Airport (MSP), with a distance of 1,399 miles. Delta operates multiple daily flights between the two cities with a flight direction of three hours and 25 minutes.
Among multiple aircraft types, some flights are also operated using the carrier’s Boeing 737-900ER fleet. Alaska Airlines operates the route multiple times daily using multiple types of narrowbody jets.
3 Seattle (SEA) <> Los Cabos, Mexico (SJD)
Flight distance: 1,814 miles
- Number of round-trip seats: 720
- Available Seat Miles (ASMs): 13 million
Delta Air Lines connects what is the only international destination on this list - a scheduled service from Seattle to Los Cabos (SJD) in Mexico, with a distance of 1,814 miles. The one-way flight has a duration of four hours and 25 minutes. Delta operates daily flights between the two cities with its Boeing 737-800 and 737-900ER fleet.
Apart from Delta, only Alaska Airlines operates the route multiple times daily using its 737 fleet of narrowbody jets.
2 Seattle (SEA) <> Detroit (DTW)
Flight distance: 1,927 miles
- Number of round-trip seats: 20,160
- Available Seat Miles (ASMs): 20.2 million
Another major route from Seattle is Detroit Metropolitan Airport (DTW), which is 1,927 miles away. The one-way route takes four hours and 20 minutes.
The flights operated using the carrier’s Boeing 737-900ER fleet can accommodate 180 passengers in three classes. Alaska Airlines, along with its codeshare partners, operates the route up to two times a day on its Boeing 737 MAX 9 fleet.
1 Seattle (SEA) <> Atlanta (ATL)
Flight distance: 2,182 miles
- Number of round-trip seats: 10,080
- Available Seat Miles (ASMs): 22 million
Delta Air Lines connects its Seattle hub to its largest hub at Atlanta’s Hartsfield-Jackson International Airport (ATL), 2,182 miles away. The one-way flight takes four hours and 50 minutes.
Delta operates multiple daily flights between the cities with its Boeing 737-800, 737-900ER, and 757-200 aircraft. Alaska Airlines also operates the route multiple times daily using its 737 aircraft.
