£309 Cheap Flights from Singapore (SIN) to Seattle (SEA)

Popular airlines from Changi Airport (SIN) to Seattle-Tacoma International Airport (SEA)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 25% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards

Cheap Flights from Singapore (SIN) to Seattle (SEA)

Prices were available within the past 7 days and start at £309 for one-way flights and £511 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Air Canada
United
Delta
Korean Air
EVA Airways
China Airlines
Philippine Airlines
All Nippon Airways
Japan Airlines

Find the cheapest month to fly from Singapore (SIN) to Seattle (SEA)

May is typically the cheapest month to fly

From £448 - £658 per traveller.

Graph displaying average flight prices per month

Flight from Singapore to Seattle route information
Origin airport
Changi
Destination airport
Seattle - Tacoma Intl.
Airlines serving
All Nippon Airways, Asiana Airlines, British Airways, Cathay Pacific, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Lufthansa, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Turkish Airlines
Return price
£511
Distance
12903 km

Compare flights from Singapore to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Singapore to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Changi to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Changi (SIN) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Singapore to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Changi to Seattle - Tacoma Intl. start at just £511 and range up to £782.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Singapore and Seattle
  • booking your flight during November, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Singapore to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Changi to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Singapore Airport to Sea-Tac Airport?
Round-trip tickets between SIN and SEA start from £511. This is based on fares available within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SIN to Seattle - Tacoma Intl. Airport (SEA)?
The majority of flights can be cancelled online, but each air carrier has different terms and conditions. If you do need to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Changi Airport to Seattle - Tacoma Intl. Airport (SEA) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Singapore Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SIN to Sea-Tac Airport?
The distance is around 13,000 kilometres. Eye mask? Check. Toothbrush? Check. We recommend you pack all the travel comforts for this long-haul Singapore to SeaTac flight.
Which airlines fly direct from Changi Airport (SIN) to Sea-Tac Airport?
A popular option with many frequent flyers, Singapore Airlines (SQ) operates 13 monthly flights from Singapore Airport to SEA. Pick the one that fits in with your travel plans and book your seat today.
Are Singapore Airport to SEA flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so there are no guarantees. While last-minute flight deals between Singapore Airport and Sea-Tac Airport are possible, it also makes sense to keep an eye on prices well before you fly. In fact, some airlines publicize their prices up to 12 months prior to the departure date. Expedia is constantly updating the best bargains around, so keep checking and be ready to pounce when the price dips.

Explore a world of travel with Expedia

Seattle Airports

Seattle Paine Field Intl. Airport

*Available to Expedia members.