$349 Find Cheap Flights from Seattle to Singapore

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 Singapore departing on 9/14. 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.
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Best Singapore Flight Deals from Seattle

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Singapore
Singaporenonstop$549
Singapore
Singaporenonstop$549

Cheap Flights from Seattle to Singapore

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Singapore 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 round-trip flight deals from Seattle to Singapore

Sun, Sep 7 - Sat, Nov 1
Singapore Airlines Logo
10:15 am - 5:35 pmSEA-SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:10 amSIN-SEA
14h 10mnonstop
$549Singapore Airlines
Find Deal
Tue, Sep 30 - Fri, Oct 3
Singapore Airlines Logo
10:15 am - 5:35 pmSEA-SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:45 amSIN-SEA
14h 45mnonstop
$609Singapore Airlines
Find Deal
Tue, Oct 14 - Thu, Oct 30
Singapore Airlines Logo
10:15 am - 5:35 pmSEA-SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:10 amSIN-SEA
14h 10mnonstop
$610Singapore Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 14
Air Canada Logo
7:15 pm - 7:05 amSEA-SIN
20h 50m1 stop
Air Canada Logo
9:10 am - 6:36 pmSIN-SEA
24h 26m1 stop
$699Air Canada
Find Deal
Mon, Nov 3 - Sat, Nov 22
Air Canada Logo
8:20 pm - 11:15 amSEA-SIN
22h 55m2 stops
Air Canada Logo
10:00 am - 10:06 pmSIN-SEA
28h 06m1 stop
$701Air Canada
Find Deal
Thu, Jul 10 - Sat, Jul 19
Asiana Airlines Logo
2:30 pm - 9:30 pmSEA-SIN
40h 00m1 stop
Asiana Airlines Logo
10:50 pm - 12:45 pmSIN-SEA
28h 55m1 stop
$780Asiana Airlines
Find Deal
Thu, Jul 17 - Thu, Jul 24
Asiana Airlines Logo
2:30 pm - 9:30 pmSEA-SIN
40h 00m1 stop
Asiana Airlines Logo
10:50 pm - 12:45 pmSIN-SEA
28h 55m1 stop
$781Asiana Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 17
Korean Air Logo
7:28 am - 11:40 pmSEA-SIN
25h 12m2 stops
Korean Air Logo
7:30 am - 10:40 amSIN-SEA
18h 10m1 stop
$826Korean Air
Find Deal
Mon, Sep 1 - Tue, Sep 16
Korean Air Logo
12:50 pm - 11:40 pmSEA-SIN
19h 50m1 stop
Korean Air Logo
1:10 am - 10:40 amSIN-SEA
24h 30m1 stop
$842Korean Air
Find Deal
Mon, Nov 24 - Mon, Dec 1
Delta Logo
11:15 am - 8:25 pmSEA-SIN
41h 10m1 stop
Delta Logo
10:30 pm - 1:20 pmSIN-SEA
30h 50m1 stop
$891Delta
Find Deal
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KAYAK's insights & trends for Seattle to Singapore flights

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

What is the cheapest Seattle to Singapore flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Seattle to Singapore.

The cheapest ticket to Singapore from Seattle found in the last 72 hours was to Singapore, at $609 round-trip. 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 $609.

Can I save money by flying with a layover from Seattle to Singapore?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $1,481, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Singapore, 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 Singapore is February, when tickets cost $794 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,529 and $1,212 respectively.

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

The average price of all round-trip flights from Seattle to Singapore clicked on KAYAK for each day over the last 12 months.

For Seattle to Singapore, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Singapore back to Seattle, the best deals are generally found on Monday, with Sunday being the most expensive.

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

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 Singapore, 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 the flight from Seattle to Singapore, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.


Good to know

Low seasonAugust
High seasonDecember
Cheapest flight$349
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 53% increase in price.
Flight from Seattle to Singapore

FAQs - booking Singapore flights

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

    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 Singapore.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Seattle to Singapore 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 Singapore?

    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 Singapore 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 Singapore?

    The cheapest time of day to fly to Singapore is generally in the afternoon, when round-trip flights cost $1,089 on average. Morning departures are around 3% cheaper than evening flights, on average. The most expensive time of day to fly to Singapore is generally at night, which is peak travel time and where the average cost of a ticket is $1,226.

Top tips for finding cheap flights to Singapore

  • Looking for a cheap flight? 25% of our users found tickets from Seattle to the following destinations at these prices or less: Singapore $348 one-way - $748 round-trip

Reviews of the top 5 airlines serving from Seattle to Singapore

 
Need help choosing which airline to fly with from Seattle to Singapore? 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.
8.4
Korean AirOverall score based on 1090 reviews
8.1Food
8.5Boarding
8.2Entertainment
8.3Comfort
8.7Crew
Airline reviews

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

10.0 ExcellentAnonymous, May 2025LAS - ICN
Read more Korean Air reviews

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

Not many people, so you can lay down on two seats

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

long flights are difficult but the crew and amenities made it a very good experience

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Staff always with a smile and very helpful with my mom who has mobility issues.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Drinks were very limited. All I wanted was water, and on a 4 hour flight, I was given 2 cups of about 3 ounces each.

We took business class, It was comfortable and I was able to sleep.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

The boarding process was good. The toilet could be better maintained.

We were not given option for meals since they ran out of the other option but good thing the remaining options tasted great.

Both the staff at check-in counter and on board were pleasant and helpful. My chicken and mashed potato was good, sauce was tasty, but the zucchini, carrot n other accompanying vegetables were over-cooked a little. (I understand the meal has to be prepared earlier). Yet I would fly on Singapore Airlines again and recommend it to family and friends.

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

The seat in economy class and legroom in Singapore airline are narrower than Korean airlines! I don’t have that comforting feeling flying with Singapore air as in the past!

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.

Food could have been better. Too many passengers getting up and down all the time.

Delayed 1hour due to storm still didn't get window seat for third flight despite paying £240 extra to book them

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.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

Easy boarding and comfortable seating were plusses. Enjoyed the experience and good service from the captain and crew. Many thanks...!

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

Great overall. Quick boarding, attentive staff - great experience in premium class.

When arriving over 2 hours early to check k in at Charlotte airport I was told I would have to check my carry on ? Apparently the flight was full and may not be room. I was not given a choice and the agent was quite unpleasant about it. I am a senior amd was not comfortable me having to worry about my bag being lost vut it didn’t seem to bother him. There were lots and lots of people of all ages in line when we boarded with carryons and most larger than mine .the rest of my journey was pleasant vut this was totally unacceptable.

The layover was 6 PLUS hours and we were only given a $15.00 voucher. We missed our first activity in Quebec due to the delay.

Miserable staff as it was a late/delayed flight and crew wasn’t in the best spirits. Completely understood as neither was most of the passengers. Still unacceptable l.

Or the greatest and it ended up picking us up from Chicago to Toronto not sure who was tesponsible for the 4 hr delay. United should have been properly prepared for a scheduled flight from Austin to Chicago and they were not.

It was a short flight, and no entertainment. That was not a problem for us, but there is no option for "not applicable". There was a bit of turbulence, so there was no food service.

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