transpacific · 12h 45m · 9,749 km
Seattle to Taipei
3 airlines · 3 aircraft ranked
In business class, Delta's Delta One Suite (A350-900) edges out the field with a 8.3/10.In premium economy, China Airlines's Premium Economy (A350-900) edges out the field with a 5.9/10.
Quick pick
Fly Delta. It has 2 more inches of legroom and a wider seat (22" vs 21").
If fares are comparable, this is the better cabin.
Fly China Airlines. It has a wider seat (20" vs 18.5").
If fares are comparable, this is the better cabin.
Fly China Airlines. It scores higher across seat comfort and amenities.
If prices are similar, go with this one.
Select two airlines to compare head-to-head
Data verified June 2026
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Airlines on this route
Route insights
- In business class, Delta's Delta One Suite (A350-900) edges out the field with a 8.3/10.
- In premium economy, China Airlines's Premium Economy (A350-900) edges out the field with a 5.9/10.
- In economy, China Airlines's Economy (A350-900) edges out the field with a 5.4/10.
- STARLUX is the only carrier offering first class on this route, scoring 7.9/10.
Frequently asked
Which is better in business: Delta or STARLUX on SEA-TPE?
Delta One Suite (Delta Air Lines, A350-900) and Business Class (STARLUX Airlines, A350-900) score virtually the same in business: 8.3 vs 8.2/10. The biggest gap is bedding — mattress pad vs duvet — but neither carrier pulls ahead overall.
Which is better in premium economy: Delta or STARLUX on SEA-TPE?
Delta Premium Select (Delta Air Lines, A350-900) and Premium Economy (STARLUX Airlines, A350-900) score virtually the same in premium economy: 5.5 vs 5.3/10. The biggest gap is wi-fi — Free Wi-Fi vs Paid Wi-Fi — but neither carrier pulls ahead overall.
Which is better in economy: Delta or STARLUX on SEA-TPE?
Main Cabin (Delta Air Lines, A350-900) edges out Economy (STARLUX Airlines, A350-900) in economy, scoring 5.1/10 vs 4.5. The deciding factor: Free Wi-Fi vs Paid Wi-Fi.
Which is better in business: Delta or China Airlines on SEA-TPE?
Delta One Suite (Delta Air Lines, A350-900) beats Premium Business Class (China Airlines, A350-900) in business, scoring 8.3/10 vs 7.1. The deciding factor: a closed suite door vs an open cabin. China Airlines fights back on bedding.
Which is better in premium economy: Delta or China Airlines on SEA-TPE?
Premium Economy (China Airlines, A350-900) edges out Delta Premium Select (Delta Air Lines, A350-900) in premium economy, scoring 5.9/10 vs 5.5. The deciding factor: 20"-wide seats vs 18.5". Delta Air Lines fights back on wi-fi and power.
Which is better in economy: Delta or China Airlines on SEA-TPE?
Economy (China Airlines, A350-900) edges out Main Cabin (Delta Air Lines, A350-900) in economy, scoring 5.4/10 vs 5.1. The deciding factor: Free Wi-Fi vs Paid Wi-Fi. Delta Air Lines fights back on wi-fi.
Which is better in business: STARLUX or China Airlines on SEA-TPE?
Business Class (STARLUX Airlines, A350-900) beats Premium Business Class (China Airlines, A350-900) in business, scoring 8.2/10 vs 7.1. The deciding factor: a closed suite door vs an open cabin. China Airlines fights back on seat width.
Which is better in premium economy: STARLUX or China Airlines on SEA-TPE?
Premium Economy (China Airlines, A350-900) edges out Premium Economy (STARLUX Airlines, A350-900) in premium economy, scoring 5.9/10 vs 5.3. The deciding factor: 39" of pitch vs 38". STARLUX Airlines fights back on entertainment and power.
Which is better in economy: STARLUX or China Airlines on SEA-TPE?
Economy (China Airlines, A350-900) edges out Economy (STARLUX Airlines, A350-900) in economy, scoring 5.4/10 vs 4.5. The deciding factor: extras.
What are the best seats in Delta Delta One Suite on SEA-TPE?
Best: Odd-numbered window seats (1A, 3A, 5A, 7A, 9A and right-side equivalents) are closer to the window and farther from the aisle for maximum privacy. Center pairs with the privacy divider lowered are excellent for couples. Row 1 has the most open space. Avoid: Even-numbered window seats are closer to the aisle with less separation from foot traffic. Rows 8-9 are nearest to the galley between business and premium select. 32 suites with sliding doors and do-not-disturb indicators. 18-inch seatback screens. 4 lavatories for business class, significantly better than the A330-900neo's 2 lavatories. The A350 is considered Delta's flagship long-haul aircraft. Dine-on-demand service on ultra-long-haul routes.
What are the best seats in Delta Delta Premium Select on SEA-TPE?
Best: Row 20 has the most legroom as the bulkhead row with extra separation from the galley. Window doublets (A-B and H-J) are ideal for couples. Row 20 is the clear top pick unless noise sensitivity is a concern. Avoid: Center seats in the 4-abreast middle section (D-E-F-G), especially E and F which have no aisle access. Row 25 may have limited recline near the economy partition. 48 seats across 6 rows in a 2-4-2 layout. Premium amenity kit, adjustable headrest with privacy wings, dedicated flight attendant, and enhanced meal service. The outside doublets avoid the middle-seat problem entirely.
What are the best seats in Delta Main Cabin on SEA-TPE?
Best: Delta Comfort+ rows (approximately 30-35, 36 seats) offer 34 inches of pitch with priority boarding and dedicated bins. Row 30 bulkhead has the most legroom. Avoid: Middle seats in any 3-abreast section on long-haul flights. Last 3 rows near rear galley and lavatories. Seat 55E is consistently rated poorly. 3-3-3 economy layout at 17.4-inch width is the A350's weakest point relative to competitors. 36 seats are Delta Comfort+ with 34-inch pitch. Remaining 190 Main Cabin seats have 31-32 inches of pitch. Complimentary meal service on all international flights. Seatback IFE and USB/AC power throughout. Delta Sync free Wi-Fi.
What are the best seats in STARLUX First Class on SEA-TPE?
Best: All 4 suites are excellent — floor-to-ceiling walls with 60-inch sliding doors. Window suites 1A and 1K have natural light. Avoid: Only 4 seats total, extremely limited availability. Center pair 1D/1G share a wall but each is fully enclosed. 4 fully enclosed suites with floor-to-ceiling walls and 60-inch sliding doors. 32-inch 4K IFE with Bluetooth audio. Wireless charging pad. Zero-gravity recline mode. Bric's amenity kit. Multi-course fine dining with champagne. Mattress pad, duvet, and pajamas.
What are the best seats in STARLUX Business Class on SEA-TPE?
Best: Window seats in odd rows (1, 3, 5) are closer to the window with more privacy. These are "true window" positions in the staggered layout. Avoid: Even-row window seats are closer to the aisle. Center pairs are fine for couples but less private for solo travelers. 26 staggered 1-2-1 suites with 48-inch privacy doors. 24-inch 4K IFE with Bluetooth. Wireless charging, USB-C (60W), AC outlet. Zero-gravity mode. Bric's amenity kit with Huygens skincare. Multi-course dining with champagne. Mattress pad, duvet, pajamas, slippers.
What are the best seats in STARLUX Premium Economy on SEA-TPE?
Best: Window pairs (A-B, J-K) for couples. Bulkhead row has extra legroom. Avoid: Center block middle seats (D or E) in 4-abreast section. No direct aisle access. 36 Recaro PL3530 recliners with 38-inch pitch. 15.6-inch 4K IFE with Bluetooth. USB-C (60W), USB-A, AC outlet. Free messaging wifi; paid data plans. Amenity kit with lip balm, lotion, socks, eye mask.
What are the best seats in STARLUX Economy on SEA-TPE?
Best: A350 cabin is quieter than 777. Exit rows have extra legroom. 9-abreast is wider per seat than 10-abreast 777. Avoid: Last rows near lavatories. Center seat in any 3-abreast block. 240 economy seats in 9-abreast. 13-inch 4K IFE with Bluetooth. USB-C (60W) power. Free messaging; paid data. Two full meals on long-haul. Eco-blanket made from recycled PET. Pre-order meals available.
What are the best seats in China Airlines Premium Business Class on SEA-TPE?
Best: Window seats in odd rows angle away from the aisle for better privacy. Center pairs in row 2 or 3 work for couples. Avoid: Row 8 is closest to the galley behind business class. Even-row window seats are closer to the aisle. 32 Collins Super Diamond seats in 1-2-1 reverse herringbone. No doors. 18-inch HD screen. Michelin-starred Le Palais collaboration menus. Mattress pad and thick duvet.
What are the best seats in China Airlines Premium Economy on SEA-TPE?
Best: Window pairs (2-abreast sections) avoid having neighbors on both sides. Avoid: Center seat in the 3-abreast middle section. 31 seats in 2-3-2. 39-inch pitch with 20-inch width is among the widest in premium economy. NC headphones provided. Le Palais collaboration menus on select routes.
What are the best seats in China Airlines Economy on SEA-TPE?
Best: Aisle seats in the forward economy cabin for quick galley access. Avoid: Center seats in any row. Last rows near rear lavatories. 243 economy seats in 3-3-3. 32-inch pitch. 11.1-inch seatback IFE. Amenity kit with eye mask and slippers on long-haul. Complimentary full meal service.