S$ 394 Find Cheap Flights from Seattle to Southeast Asia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Southeast Asia departing on 21-9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Southeast Asia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Southeast Asia, as well as popular online travel agencies
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Flight Deals

Best Southeast Asia Flight Deals from Seattle

Cheapest return prices found by our users on KAYAK in the last 72 hours
Singapore
SingaporedirectS$ 824
Singapore
SingaporedirectS$ 824

Cheap Flights from Seattle to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Seattle to Southeast Asia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Seattle to Southeast Asia

Thu, 23 Oct - Fri, 31 Oct
Singapore Airlines Logo
10:15 - 17:35SEA-SIN
16h 20mdirect
Singapore Airlines Logo
09:00 - 08:10SIN-SEA
14h 10mdirect
S$ 824Singapore Airlines
Find Deal
Tue, 10 Feb - Sun, 1 Mar
Singapore Airlines Logo
08:45 - 17:45SEA-SIN
17h 00mdirect
Singapore Airlines Logo
09:00 - 07:10SIN-SEA
14h 10mdirect
S$ 827Singapore Airlines
Find Deal
Sun, 14 Sep - Tue, 30 Sep
Philippine Airlines Logo
23:35 - 18:55SEA-SIN
28h 20m1 stop
Philippine Airlines Logo
20:00 - 19:15SIN-SEA
38h 15m1 stop
S$ 829Philippine Airlines
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Tue, 21 Oct - Thu, 30 Oct
Singapore Airlines Logo
07:00 - 19:10SEA-SIN
21h 10m1 stop
Singapore Airlines Logo
09:00 - 08:10SIN-SEA
14h 10mdirect
S$ 832Singapore Airlines
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Thu, 5 Feb - Sun, 15 Feb
 Logo
08:45 - 17:45SEA-SIN
17h 00mdirect
 Logo
09:20 - 16:36SIN-SEA
23h 16m2 stops
S$ 909
Find Deal
Wed, 28 Jan - Sun, 8 Feb
Asiana Airlines Logo
00:10 - 21:55SEA-SIN
29h 45m1 stop
Asiana Airlines Logo
23:10 - 13:55SIN-SEA
30h 45m1 stop
S$ 910Asiana Airlines
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Wed, 4 Feb - Sun, 15 Feb
Asiana Airlines Logo
00:10 - 21:55SEA-SIN
29h 45m1 stop
Asiana Airlines Logo
23:10 - 13:55SIN-SEA
30h 45m1 stop
S$ 911Asiana Airlines
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Sun, 14 Sep - Tue, 30 Sep
Air Canada Logo
14:55 - 07:05SEA-SIN
25h 10m1 stop
Air Canada Logo
09:10 - 14:16SIN-SEA
20h 06m1 stop
S$ 922Air Canada
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Tue, 20 Jan - Tue, 3 Feb
Air Canada Logo
20:00 - 11:15SEA-SIN
23h 15m2 stops
Air Canada Logo
08:50 - 09:31SIN-SEA
16h 41m1 stop
S$ 924Air Canada
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Tue, 4 Nov - Tue, 11 Nov
 Logo
16:30 - 07:55SEA-SIN
23h 25m1 stop
 Logo
09:00 - 07:10SIN-SEA
14h 10mdirect
S$ 946
Find Deal
Booking Insights

KAYAK's insights & trends for Seattle to Southeast Asia flights

Get data-powered insights and trends into flights from Seattle to Southeast Asia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Seattle to Southeast Asia flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Southeast Asia from Seattle found in the last 72 hours was to Singapore, at S$ 873 return. The most popular route is from Seattle (SEA) to Singapore (SIN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was S$ 873.

Can I save money by flying with a stopover from Seattle to Southeast Asia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at S$ 1,010 on average.

What is the cheapest month to fly from Seattle to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Southeast Asia is February, when tickets cost S$ 991 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of return tickets is S$ 1,964 and S$ 1,455 respectively.

How far in advance should I book a flight from Seattle to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Seattle to Southeast Asia, you should book around 3 weeks before departure, which saves you about 32% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonJune
Cheapest flightS$ 394
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Seattle to Singapore

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from Seattle to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Seattle to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Seattle to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Southeast Asia?

    The cheapest time of day to fly to Southeast Asia is generally in the morning, when retur flights cost S$ 1,109 on average. The most expensive time of day to fly to Southeast Asia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is S$ 1,448.

Reviews of the top airline flying from Seattle to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Singapore AirlinesOverall score based on 1352 reviews
8.2Boarding
7.9Comfort
8.0Entertainment
8.6Crew
7.7Food
Airline reviews

The business class seats were very uncomfortable. When in lie flat position my legs were very restricted.

4.0 OkayRobert, Aug 2025SIN - SYD
Read more Singapore Airlines reviews

The business class seats were very uncomfortable. When in lie flat position my legs were very restricted.

Lounge a access was excellent as was the attentiveness and service from the crew as always. The food and drink supplied were of good quality. The entertainment system had a good selection and I liked the mapping system supplied. However the screen wild have been bigger and the operation a little smoother to navigate. The seats were barely comfortable, but adequate.

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Very good flight from Boarding to landing -efficient and comfortable with decent entertainment options

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Loved the airline with the exception of their carry on limitations. They enforce a strict 7 kilo limit for carry on baggage which is ridiculous. We traveled from SFO to SIN with carry on with no difficulty yet when we checked in Delhi they forced us to check the carry on bags. The weight of our carry on bags were 11 and 12 kilos and while they exceeded the limitations set by Singapore Airlines they were well under weight limitations set by may other carriers. Interestingly my wife and I were each allowed two 22 KG bags to check in addition to the 7 kg carry on for a total weight of 102 KG's. Our total weight with the one bag we planned to check and our two carry ons was 46 kgs.

Crew and service was excellent, but passengers should be offered a welcome drink before take off which did not happen. Food was very good. Unfortunately the lie-flat bed in business class was one of the most uncomfortable I have experienced. The configuration forces you to sleep with your legs at an angle instead of in a straight line, plus there is very little padding on the bed so it wasn't possible to sleep for more than 2-3 hours on an 18 hour flight. For what the airlines charges for a business class ticket their hard product leaves a lot to be desired.

So happy I flew with Singapore Airlines. The customer service is top notch. I am terrified of flying and the staff made me feel so at ease. Will only fly Singapore internationally moving forward.

Everything was great keep up the good work 😁, can't ask for more.

Flight from SFO did not include entertainment as it was not working the entire duration of the flight. Was informed that there would be a $350 voucher for the inconvenience. Uncertain how the voucher will be provided.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports

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