Flights from Seattle (SEA) to Hanoi (HAN)

In-flight Dining
On Seattle–Hanoi journeys via Singapore, you will be served complimentary meals and refreshments in every cabin, with menus designed to suit the different stages of your long-haul and regional flights.

Special Meals
We offer a wide range of special meals that can be requested in advance on most fares, helping you plan your dining to suit your personal needs and preferences.

Book the Cook
Eligible premium passengers on the long-haul sector can pre-select from a curated Book the Cook menu, choosing their main course ahead of time for a more personalised dining experience.

Beverage Service
A selection of hot and cold drinks is available throughout the flight, including juices, soft drinks, tea, coffee, and alcoholic beverages. Our signature Singapore Sling is also available on board.

For flights between Seattle and Hanoi, the piece concept applies for checked baggage. In Economy Class, you may check in 2 pieces, each up to 23kg. In Premium Economy Class, you may check in 2 pieces, each up to 23kg. In Business Class, you may check in 2 pieces, each up to 32kg. Each individual checked bag 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 final 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 Hanoi 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. Non-members can purchase access plans. The service is suitable for messaging, email, and basic browsing, but does not support video streaming, video calls, or large file transfers.

On the Seattle–Singapore Airbus A350-900 sector, Economy Class offers 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. On the Singapore–Hanoi Airbus A350-900 sector, Economy Class offers the same generous legroom and seat width, while Business Class also features a fully flat bed 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 may be invited to the SilverKris Lounge (First Class), SilverKris Lounge (Business Class), or KrisFlyer Gold Lounge, depending on cabin and status.

Singapore Changi Airport is designed for comfortable layovers, with themed gardens, quiet rest areas, and a wide variety of dining and shopping options across the terminals. For longer connections, you can consider the official free city tour offered from the airport, which typically requires a minimum layover of around 5.5 to 6 hours. Shorter layovers are well spent exploring the indoor gardens, art installations, and relaxation zones within the transit area. 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 (UTC−8) in winter and Pacific Daylight Time (UTC−7) roughly from March to early November. Hanoi follows Indochina Time (UTC+7) year-round and does not observe daylight saving time. This means Hanoi is 15 hours ahead of Seattle in winter, and 14 hours ahead during Seattle’s summer time.

Yes, your baggage will typically be checked through to Noi Bai International Airport in Hanoi 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–Hanoi) 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 Hanoi 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–Hanoi 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.