domestic · 5h 02m · 3,174 km
Nashville to Seattle
3 airlines · 3 aircraft ranked
In economy, Delta's Main Cabin (A220-300) leads the field with a 5.2/10.In first class, Alaska's First Class (737-900ER) edges out the field with a 2.8/10.
Quick pick
Fly Delta. It has a wider seat (18.6" vs 17.5").
If prices are similar, go with this one.
Fly Alaska. It has 3 more inches of legroom.
If fares are comparable, this is the better cabin.
Select two airlines to compare head-to-head
Data verified June 2026
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Airlines on this route
Flying with family
- Seatback screens on Alaska, Delta. Southwest: bring your own device.
Route insights
- In economy, Delta's Main Cabin (A220-300) leads the field with a 5.2/10.
- In first class, Alaska's First Class (737-900ER) edges out the field with a 2.8/10.
Frequently asked
Which is better in first: Alaska or Delta on BNA-SEA?
First Class (Alaska Airlines, 737-900ER) and Delta First Class (Delta Air Lines, A220-300) score virtually the same in first: 2.8 vs 2.8/10. The biggest gap is seat width — 21"-wide seats vs 20.5" — but neither carrier pulls ahead overall.
Which is better in economy: Alaska or Delta on BNA-SEA?
Main Cabin (Delta Air Lines, A220-300) edges out Main Cabin (Alaska Airlines, 737-900ER) in economy, scoring 5.2/10 vs 4.4. The deciding factor: AC + USB-C vs USB-C only.
Which is better in economy: Alaska or Southwest on BNA-SEA?
Main Cabin (Alaska Airlines, 737-900ER) edges out Economy (open seating) (Southwest Airlines, 737-800) in economy, scoring 4.4/10 vs 3.9. The deciding factor: a 10" screen vs app_only. Southwest Airlines fights back on legroom.
Which is better in economy: Delta or Southwest on BNA-SEA?
Main Cabin (Delta Air Lines, A220-300) beats Economy (open seating) (Southwest Airlines, 737-800) in economy, scoring 5.2/10 vs 3.9. The deciding factor: AC + USB-C vs USB-A only. Southwest Airlines fights back on legroom.
What are the best seats in Alaska First Class on BNA-SEA?
Best: Row 1 for maximum legroom. Window seats in rows 1-2 are quiet and private. Avoid: Row 4 (last row of first) may have limited meal choices due to service order. 41-inch pitch is among the best domestic first class products in the US. No seatback IFE screens; stream to personal devices via Gogo 2Ku Wi-Fi. USB-A and AC outlet under center armrest. Free for T-Mobile customers. Pre-order meals system with limited choices.
What are the best seats in Alaska Main Cabin on BNA-SEA?
Best: Exit row seats (row 15/16) offer extra legroom. Avoid: Last row (34) has limited recline and is near the lavatory. Middle seats throughout. Standard domestic economy with 31-inch pitch. USB-A and AC power at every seat. No seatback screens; entertainment streams to personal devices. Boeing Sky Interior with larger overhead bins. Exit row seats on the 737 offer extra legroom but do not recline. The row immediately before the exit also has limited recline due to clearance requirements.
What are the best seats in Delta Delta First Class on BNA-SEA?
Best: Row 1 for maximum legroom as a bulkhead. Seats 1A and 1F offer window views with extra privacy. The 2-2 layout means no middle seats. Avoid: Row 3 is closest to the forward galley and lavatory. Bulkhead rows lack under-seat storage during taxi, takeoff, and landing. The A220 has one of the widest domestic first class seats at 20.5 inches. Collins MiQ recliners with individual AC power and USB-A. 13.3-inch seatback HD screens with live TV and 300+ on-demand titles. Delta Sync WiFi free for SkyMiles members. Complimentary meal service on flights over 900 miles; snack basket on shorter flights.
What are the best seats in Delta Main Cabin on BNA-SEA?
Best: The 2-seat side (A-B) avoids the middle seat entirely. Exit row seats offer extra legroom. Comfort+ seats in rows 10-18 have 34-inch pitch. Avoid: Last rows (32-33) have limited recline and are near the rear lavatory. Middle seat E in the 3-seat section is the tightest spot. The A220 economy is the widest in Delta's narrowbody fleet at 18.6 inches — 1.5 inches wider than the 737. The 2-3 asymmetric layout means only one middle seat per row instead of two. 10.1-inch seatback screens with live TV. Delta Sync WiFi free for SkyMiles members. USB-A at every seat, AC outlets shared between pairs (left side) or trios (right side). 30 Comfort+ seats have 34-inch pitch; 88 Main Cabin seats have 30-32 inches.
What are the best seats in Southwest Economy (open seating) on BNA-SEA?
Best: 16A and 16F have the most legroom (no seat in front, behind exit row). Row 12 exit row seats also have extra legroom. Avoid: Last row (row 29) is narrower, restricted recline, near galley/lavatory noise. Seats 10A, 11A, 11F lack windows. Single-class cabin. Assigned seating launched Jan 2026. Extra legroom rows at front have ~34 inch pitch. Older 737-800s lack power outlets; newer retrofits have USB-A and USB-C in seatbacks. Streaming entertainment via personal devices only. Exit row seats on the 737 offer extra legroom but do not recline. The row immediately before the exit also has limited recline due to clearance requirements.