Flights from Seattle (SEA) to Hangzhou (HGH)

In-flight Dining
On Seattle–Singapore and Singapore–Hangzhou flights, we serve complimentary meals in all cabins, with menus designed to suit the timing of each sector and the length of your journey.

Special Meals
We offer a wide selection of special meals for different dietary needs when requested in advance. You can choose and confirm these during the booking process or via Manage Booking.

Book the Cook
Eligible customers in premium cabins on this route can pre-select main courses from our Book the Cook service, giving more choice and personalisation to your dining experience.

Beverage Service
Throughout your flight, you can enjoy a range of hot and cold drinks, including juices, soft drinks, and hot beverages. Our signature Singapore Sling is also available on board.

For flights between Seattle and Hangzhou, the piece concept applies to checked baggage. In Economy Class, you may check in 2 pieces, each up to 23kg. In Premium Economy Class, you may also check in 2 pieces, each up to 23kg. In Business Class, you may check in 2 pieces, each up to 32kg. Each individual checked piece must not exceed 32kg. For cabin baggage, Economy Class and Premium Economy Class customers may bring 1 piece up to 7kg, while Business Class customers may bring 2 pieces, each up to 7kg. Your exact allowance is shown on your e-ticket, and KrisFlyer Elite Gold and PPS Club members enjoy additional allowances.

Wi-Fi is available on Singapore Airlines flights from Seattle to Hangzhou once the aircraft is above 10,000 feet. It is free and unlimited for KrisFlyer members; Economy Class and Premium Economy Class customers should add their membership number to the booking at least 1.5 hours before departure. Paid plans are available for non-members. The connection is suitable for messaging, email, and basic browsing, but it does not support video streaming, video calls, or large file transfers.

On the Seattle–Singapore sector, operated by the Airbus A350-900, Economy Class seats have a 32-inch pitch with up to 19-inch seat width, Premium Economy Class offers a 38-inch pitch with up to 20-inch seat width, and Business Class provides a fully flat bed with direct aisle access for every seat. On the Singapore–Hangzhou sector, also operated by the Airbus A350-900, Economy Class offers the same 32-inch pitch and up to 19-inch seat width, while Business Class features fully flat beds with direct aisle access.

Yes, Singapore Airlines provides lounge access to eligible passengers with a layover in Singapore. Your eligibility is based on your class of travel or your KrisFlyer and Star Alliance status, and it is determined by your flight leaving Singapore. Other options, like purchasing a day pass at a pay-per-use lounge, are also available.

Lounge Access Eligibility
Cabin Class: Complimentary for Suites, First, and Business Class passengers. Premium Economy and Economy travellers do not have access unless they hold eligible status.

Frequent Flyer Status: PPS Club and KrisFlyer Elite Gold (or Star Alliance Gold) members have access regardless of cabin class.

The 'Next Segment' Rule: Eligibility is based on the flight immediately departing that airport. For example, if you fly Economy from Seattle but have a Business Class onward flight from Singapore, you get lounge access in Singapore only. In Singapore, eligible customers can access facilities such as the SilverKris Lounge (First Class), SilverKris Lounge (Business Class), and KrisFlyer Gold Lounge.

If your layover in Singapore is long enough, you can consider joining one of Singapore Changi Airport’s official transit tours, which usually require several hours of connection time and a suitable schedule. These tours offer a glimpse of the city before you return to the terminal for your onward flight. For shorter layovers, you can stay airside and explore Changi Airport’s gardens, relaxation zones, and family-friendly spaces, or simply unwind at quiet seating areas between terminals. Your time at Singapore Changi Airport is more than just a wait — it is an integral part of your journey.

Seattle operates on Pacific Time, which is UTC−8, shifting to UTC−7 during daylight saving time from roughly March to early November. Hangzhou follows China Standard Time year-round, which is UTC+8. This means Hangzhou is 16 hours ahead of Seattle during Pacific Standard Time, and 15 hours ahead during Pacific Daylight Time.

Yes, your baggage will typically be checked through to Hangzhou Xiaoshan International Airport when flying from Seattle via Singapore on a single booking with Singapore Airlines.

Through-Check Conditions
For your bags to be sent directly to your final destination, the following general conditions must be met:

Single Itinerary: Both flight segments (Seattle–Singapore and Singapore–Hangzhou) must be under the same booking reference or PNR.

Layover Duration: Your connection in Singapore must be less than 24 hours. If your layover exceeds 24 hours, it is considered a stopover, and you will typically be required to collect your luggage and re-check it for your onward flight.

Partner Airlines: If your onward flight from Singapore to Hangzhou is operated by a partner airline, Singapore Airlines has through-check agreements that usually allow your bags to be tagged to your final destination.

You may be able to plan a stopover in Singapore on your Seattle–Hangzhou trip, subject to your ticket conditions and availability. When booking, you can search for multi-city options or speak with our customer service team or your travel agent, who can advise whether a stopover can be added to your itinerary.