SIN - SEA

£383 Find Cheap Flights from Singapore to Seattle – Compare and Save

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Everything you should know

Cheapest return flight
£653
Typical prices: £623-£772
China Airlines
Mon 15/10Thu 1/11
SIN - SEA • 1 stop
Cheapest direct flights
£1,223
Typical prices: £698-£848
Singapore Airlines
Tue 16/10Thu 25/10
SIN - SEA • Direct
Direct flights
You can fly direct with Singapore Airlines. Average duration is 14h 15m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 20 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 6% price drop
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Cheapest • Avg £580 (return)
Shortest trip • 18h 42m (one-way)
Insights
Insights
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We hope you enjoy your trip to Seattle!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Singapore to Seattle (SIN-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Singapore to Seattle

Thu, 15 Oct - Sun, 1 Nov
China Airlines Logo
13:55 - 19:15SIN  Singapore Changi-SEA Seattle/Tacoma Intl
20h 20m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
00:10 - 13:05SEA  Seattle/Tacoma Intl-SIN Singapore Changi
20h 55m1 stop Taipei City Taiwan Taoyuan Intl
£653China Airlines
Fri, 16 Oct - Sun, 25 Oct
China Airlines Logo
02:00 - 19:15SIN  Singapore Changi-SEA Seattle/Tacoma Intl
32h 15m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
01:10 - 00:40SEA  Seattle/Tacoma Intl-SIN Singapore Changi
32h 30m1 stop Taipei City Taiwan Taoyuan Intl
£653China Airlines
Tue, 13 Oct - Wed, 28 Oct
Korean Air Logo
01:25 - 10:40SIN  Singapore Changi-SEA Seattle/Tacoma Intl
24h 15m1 stop Incheon Intl
Korean Air Logo
12:00 - 00:15SEA  Seattle/Tacoma Intl-SIN Singapore Changi
21h 15m1 stop Incheon Intl
£654Korean Air
Mon, 19 Oct - Thu, 5 Nov
Korean Air Logo
22:00 - 10:40SIN  Singapore Changi-SEA Seattle/Tacoma Intl
27h 40m1 stop Incheon Intl
Korean Air Logo
11:00 - 20:25SEA  Seattle/Tacoma Intl-SIN Singapore Changi
41h 25m1 stop Incheon Intl
£655Korean Air
Sun, 29 Nov - Sun, 31 Jan
China Airlines Logo
02:00 - 18:10SIN  Singapore Changi-SEA Seattle/Tacoma Intl
32h 10m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
00:10 - 13:05SEA  Seattle/Tacoma Intl-SIN Singapore Changi
20h 55m1 stop Taipei City Taiwan Taoyuan Intl
£668China Airlines
Sun, 29 Nov - Mon, 14 Dec
China Airlines Logo
02:00 - 18:10SIN  Singapore Changi-SEA Seattle/Tacoma Intl
32h 10m1 stop Taipei City Taiwan Taoyuan Intl
China Airlines Logo
00:10 - 00:40SEA  Seattle/Tacoma Intl-SIN Singapore Changi
32h 30m1 stop Taipei City Taiwan Taoyuan Intl
£687China Airlines
Fri, 16 Oct - Wed, 28 Oct
Cathay Pacific Logo
20:05 - 10:05SIN  Singapore Changi-SEA Seattle/Tacoma Intl
29h 00m1 stop Hong Kong Intl
Cathay Pacific Logo
11:25 - 05:40SEA  Seattle/Tacoma Intl-SIN Singapore Changi
27h 15m1 stop Hong Kong Intl
£713Cathay Pacific
Thu, 15 Oct - Tue, 27 Oct
United Airlines Logo
08:45 - 14:17SIN  Singapore Changi-SEA Seattle/Tacoma Intl
20h 32m1 stop San Francisco
United Airlines Logo
05:05 - 07:00SEA  Seattle/Tacoma Intl-SIN Singapore Changi
34h 55m2 stops Denver Intl San Francisco
£715United Airlines
Thu, 15 Oct - Mon, 2 Nov
United Airlines Logo
08:45 - 18:44SIN  Singapore Changi-SEA Seattle/Tacoma Intl
24h 59m1 stop San Francisco
United Airlines Logo
06:00 - 08:00SEA  Seattle/Tacoma Intl-SIN Singapore Changi
34h 00m2 stops Los Angeles San Francisco
£716United Airlines
Wed, 17 Feb - Sun, 21 Feb
STARLUX Airlines Logo
14:45 - 15:05SIN  Singapore Changi-SEA Seattle/Tacoma Intl
16h 20m1 stop Taipei City Taiwan Taoyuan Intl
STARLUX Airlines Logo
23:45 - 13:25SEA  Seattle/Tacoma Intl-SIN Singapore Changi
21h 40m1 stop Taipei City Taiwan Taoyuan Intl
£726STARLUX Airlines
Booking Insights

Price, demand, and travel trends for Singapore to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Singapore to Seattle with more confidence.

How much is a return flight from Singapore to Seattle?

Return flights from Singapore to Seattle start at £653. Prices are typical for this route right now, with typical return fares ranging from £623 to £772. The lowest price found in the past 5 days was £653 on China Airlines.

What's the cheapest day of the week to fly from Singapore to Seattle?

Wednesday is the cheapest day of the week to fly from Singapore to Seattle and is 5% cheaper than the average day. Saturday is the most expensive day with flight prices 13% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Singapore to Seattle?

•February is the cheapest month to fly from Singapore to Seattle at £630 return.
•May (£777) and October (£759) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 23% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Singapore to Seattle the cheapest?

Flights from Singapore to Seattle are cheapest 20 weeks before departure. Booking in this window typically costs about 20% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Singapore to Seattle

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on SIN

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, The Points Guy, and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Key details for Singapore to Seattle flights

Low season

October

Cheapest flight

£383
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly (3% more expensive on average)
Flights from Singapore to Seattle

When to book flights from Singapore to Seattle

Are your dates flexible? Find out the best times to travel from Singapore to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Singapore to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What are the earliest and latest flights from Singapore to Seattle?

    These are the earliest and latest flight times available from Singapore to Seattle:

    • Earliest: departs at 08:55 and lands at 23:10
    • Latest: departs at 09:00 and lands at 23:15.

    The flight takes about 14h 15m.

  • How long is a flight from Singapore to Seattle?

    A direct flight from Singapore to Seattle takes 14h 15m, covering 8,059 miles.

  • Do I need a passport to fly from Singapore to Seattle?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Singapore to Seattle flight?

    Return flights from Singapore to Seattle range from £623 to £772, with an average of £670 over the past 12 months. Anything below £623 counts as a good deal.

  • How expensive are last-minute Singapore to Seattle flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 7% above the route average of £670. Book 20 weeks before departure for the lowest fares.

  • How much can I save by having a stopover when flying from Singapore to Seattle?

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average £580 return via San Francisco (SFO), compared with £761 for direct.

  • How does Singapore Airlines's on-time performance compare to other airlines on Singapore to Seattle flights?

    Singapore Airlines is the only airline operating Singapore to Seattle flights. 87% of its flights are on time.

  • How are flight departures from Singapore to Seattle spread across the day?

    Morning is the busiest departure period on Singapore to Seattle flights, with 100% leaving in that window. Afternoon departures account for 0%, Evening flights for 0%, and Night flights for 0%.

  • Have flight prices from Singapore to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £653 to £5,106. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from Singapore to Seattle looking right now?

    One-way fares from Singapore to Seattle are currently lower than usual. Average one-way flight prices are about £397, which is 10% below the typical average for this route.

  • Which car hire options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car hire companies, with daily rates starting from around £3 for economy cars. Top options include:
    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Dollar

  • Which airports can I use when flying from Singapore to Seattle?

    Flights from Singapore to Seattle usually depart from Singapore Changi (SIN) and arrive at Seattle/Tacoma Intl (SEA).

  • How do delay rates compare for morning and evening flights from Singapore to Seattle?

    Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

  • At what point is a flight considered delayed on the route from Singapore to Seattle?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Singapore to Seattle route, 13% of flights were delayed in the past 3 months, with delays averaging 1 hour 25 minutes.

  • Which airports do connecting flights from Singapore to Seattle pass through?

    One-stop flights from Singapore to Seattle most commonly connect through:

    • Taipei City Taiwan Taoyuan Intl (TPE) – 68% of one-stop connections
    • San Francisco (SFO) – 9% of one-stop connections
    • Vancouver Intl (YVR) – 9% of one-stop connections
    • Incheon Intl (ICN) – 5% of one-stop connections

    Taipei City Taiwan Taoyuan Intl (TPE) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Singapore to Seattle?

    Yes. Being flexible with your travel dates can save you up to 16% on the Singapore to Seattle route. Wednesday is the cheapest departure day at £643 return on average, while Saturday is the most expensive at £761, a difference of £118. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • Which airlines are available on the route from Singapore to Seattle?

    Only Singapore Airlines operates flights between Singapore and Seattle.

  • How much time can I save by choosing a different stopover airport from Singapore to Seattle?

    Flying via Tokyo Narita (NRT) gives the shortest average 1-stop total travel time of 18h 42m, compared to 19h 03m via Vancouver Intl (YVR) and 19h 16m via Taipei City Taiwan Taoyuan Intl (TPE).

  • What is the time difference between Singapore and Seattle?

    Seattle is 15 hours behind Singapore (Pacific Time vs Singapore Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are The Westin Seattle, Seattle Center, and Seattle Marriott Waterfront. These are among the most viewed places in Seattle on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Singapore to Seattle flights?

    Among airlines operating Singapore to Seattle flights:

    • Singapore Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Singapore to Seattle flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Singapore Airlines: a cabin bag and a checked bag in Economy class

    Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Your guide to booking Singapore to Seattle flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Saturday. On this route, Wednesday flights average £643 – about £118 less than Saturday (16% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 20% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Singapore to Seattle trip for February. Fares historically average £630 return in that month – typically £147 less than the most expensive month, which is May (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through San Francisco Airport (SFO) can be cheaper than flying direct. The cheapest stopover option averages £580 return on this route – about £181 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

Prefer to fly direct from Singapore to Seattle?

 
Find which airlines fly direct from Singapore Changi Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Singapore Changi to Seattle/Tacoma Intl

Tuesday

Singapore Airlines

Singapore Airlines

Wednesday

Singapore Airlines

Singapore Airlines

Thursday

Singapore Airlines

Singapore Airlines

Friday

Singapore Airlines

Singapore Airlines

Saturday

Singapore Airlines

Singapore Airlines

Sunday

Singapore Airlines

Singapore Airlines

See more direct flights

Direct returns

Seattle/Tacoma Intl to Singapore Changi

Tuesday

Singapore Airlines

Singapore Airlines

Wednesday

Singapore Airlines

Singapore Airlines

Thursday

Singapore Airlines

Singapore Airlines

Friday

Singapore Airlines

Singapore Airlines

Saturday

Singapore Airlines

Singapore Airlines

Sunday

Singapore Airlines

Singapore Airlines

See more direct flights

More options for your flight from Singapore to Seattle

Complete your trip to Seattle with a hotel stay or car hire