SEA - SIN

$363 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 9/15. 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, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Singapore.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Singapore.
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Everything you should know

Cheapest round-trip
$655
Typical prices: $877-$667
Singapore Airlines
Thu 10/8Fri 10/30
SEA - SIN • Non-stop
Cheapest non-stop
$894
Typical prices: $863-$514
Singapore Airlines
Tue 9/8Tue 9/15
SEA - SIN • Non-stop
Nonstop flights
Tue, Thu, Fri, Sat, Sun
You can fly direct with Singapore Airlines. Average duration is 16h 20m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Cheapest • from $655 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $1,201 (round-trip)
Shortest trip • 20h 14m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 73% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Singapore!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Seattle to Singapore (SEA-SIN)

 
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

Thu, Oct 8 - Fri, Oct 30
Singapore Airlines Logo
10:15 am - 5:35 pm
SEA
-
SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:10 am
SIN
-
SEA
14h 10mnonstop
$655Singapore Airlines
Thu, Oct 8 - Tue, Oct 20
Singapore Airlines Logo
10:15 am - 5:35 pm
SEA
-
SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:45 am
SIN
-
SEA
14h 45mnonstop
$663Singapore Airlines
Sun, Nov 1 - Sun, Nov 15
Singapore Airlines Logo
8:45 am - 5:45 pm
SEA
-
SIN
17h 00mnonstop
Singapore Airlines Logo
9:00 am - 7:10 am
SIN
-
SEA
14h 10mnonstop
$699Singapore Airlines
Sat, Oct 10 - Sat, Oct 31
Singapore Airlines Logo
10:15 am - 5:35 pm
SEA
-
SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:10 am
SIN
-
SEA
14h 10mnonstop
$710Singapore Airlines
Tue, Sep 15 - Tue, Sep 22
Singapore Airlines Logo
10:15 am - 5:35 pm
SEA
-
SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:45 am
SIN
-
SEA
14h 45mnonstop
$733Singapore Airlines
Tue, Nov 10 - Tue, Dec 1
Singapore Airlines Logo
8:45 am - 5:45 pm
SEA
-
SIN
17h 00mnonstop
Singapore Airlines Logo
9:00 am - 7:10 am
SIN
-
SEA
14h 10mnonstop
$750Singapore Airlines
Wed, Nov 18 - Wed, Dec 9
Singapore Airlines Logo
8:45 am - 5:45 pm
SEA
-
SIN
17h 00mnonstop
Singapore Airlines Logo
9:00 am - 7:10 am
SIN
-
SEA
14h 10mnonstop
$752Singapore Airlines
Fri, Oct 16 - Fri, Oct 30
Singapore Airlines Logo
10:15 am - 5:35 pm
SEA
-
SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:10 am
SIN
-
SEA
14h 10mnonstop
$759Singapore Airlines
Tue, Nov 10 - Tue, Dec 1
Singapore Airlines Logo
8:45 am - 5:45 pm
SEA
-
SIN
17h 00mnonstop
Singapore Airlines Logo
9:00 am - 7:10 am
SIN
-
SEA
14h 10mnonstop
$760Singapore Airlines
Tue, Nov 10 - Tue, Nov 24
Singapore Airlines Logo
8:45 am - 5:45 pm
SEA
-
SIN
17h 00mnonstop
Singapore Airlines Logo
9:00 am - 7:10 am
SIN
-
SEA
14h 10mnonstop
$762Singapore Airlines
Booking Insights

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.

How much is a round-trip flight from Seattle to Singapore?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Singapore departing in October.

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 September, where tickets cost $680 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,410 and $1,006 respectively.

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $850 on average.

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 7 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to Singapore

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
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 traveled 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, USA TODAY, 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.

Good to know

Low seasonSeptember
Cheapest flight$363
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Seattle to Singapore

When to book flights from Seattle to Singapore

Are your dates flexible? Find out the best times to travel from Seattle to Singapore based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Singapore

  • Is a visa required for entry into Singapore?

    For tourist visits of less than 90 days, you will not need to apply for a visa before flying to Singapore. A visa will only be required for business travel and if you plan to stay longer than the 90-day visa-free limit. However, your passport should have at least six months of validity and two pages of entry stamps.

  • What are the layover options from Seattle to Singapore?

    The layover depends on the airline you’re traveling with. The most popular options on this route include London, for British Airways flights, Dubai for Emirates flights, San Francisco when flying with United Airlines, and Incheon when flying with Korean Air. It is important to look up the transit visa requirements before booking to avoid unnecessary inconveniences.

  • Which benefits do I get when I upgrade to first class?

    A first-class ticket makes your trip a lot more comfortable which is especially important for such long-haul trips. You get way more legroom compared to if you were in economy and the seats can recline to a full 180 giving you a makeshift bed which comes in handy with the complimentary pillow. In addition, the meal selection is different and you get up to five-course meals and a premium selection of drinks including wine, champagne, beer, and spirits. Lastly, you get priority boarding for your flight which allows you to settle before departure.

  • How do I access the city center from Singapore Changi Airport (SIN)?

    The Metro is arguably the best transport option to the city center because it is inexpensive and fast connecting to various destinations around the city. However, there is no direct line to the city center meaning you have to change at Tanah Merah Station, and from there you can access any part of the city center. If you have a lot of luggage, the metro can be quite inconvenient, especially during rush hours. A good alternative would be taking a taxi which will drop you at any location you want and the best part is they have a lot of luggage space.

  • What is the cheapest flight from Seattle to Singapore?

    In the last 5 days, the lowest price for a flight from Seattle to Singapore was $363 for a one-way ticket and $655 for a round-trip.

  • Do I need a passport to fly between Seattle and Singapore?

    Yes

  • Which airports will I be using when flying from Seattle to Singapore?

    On your way to Singapore, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing at Singapore Changi.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Singapore?

    Delta, and Alaska Airlines offer inflight Wi-Fi service on the Seattle to Singapore flight route.

  • Which aircraft models fly most regularly from Seattle to Singapore?

    The Airbus A350-900 is the aircraft model that flies most regularly on the Seattle to Singapore flight route.

  • Which airline alliances offer flights from Seattle to Singapore?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Singapore, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Singapore?

    You can catch a nonstop flight from Seattle to Singapore on on Tuesday, Thursday, Friday, Saturday, and Sunday.

  • Which is the best airline for flights from Seattle to Singapore, STARLUX Airlines or EVA Air?

    The two airlines most popular with KAYAK users for flights from Seattle to Singapore are STARLUX Airlines and EVA Air. With an average price for the route of $1,524 and an overall rating of 8.9, STARLUX Airlines is the most popular choice. EVA Air is also a great choice for the route, with an average price of $1,578 and an overall rating of 8.5.

  • 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 to Singapore from Seattle 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 to Singapore with an airline and back to Seattle with another airline. Booking your flights between Seattle and SIN can sometimes prove cheaper using this method.

  • 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 to Singapore from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Singapore

  • Looking for a cheap flight? 25% of our users found flights on this route for $479 or less one-way and $862 or less round-trip.
  • Emirates is arguably the best airline to book with when flying Business. The Emirates A380 has private cabins and even a shower spa to keep you refreshed during your travels.
  • Korean Air has the best baggage allowance for travelers flying in economy class. You get a carry-on bag and two checked bags for free which isn’t the case for most airlines as they will only allow a carry-on and maybe one checked bag at best.
  • EVA Air is a good option when traveling with kids. They provide Wi-Fi, seat back on-demand TV, and charging outlets for economy passengers meaning you can keep the kids entertained and distracted for the whole journey.
  • If you’re looking to fly more sustainably, United Airlines is a great option to go with. They are already in the process of investing in sustainable aviation fuel for their flights which should help reduce carbon emissions significantly.
  • The Green Line Sound Transit offers a budget-friendly way to get to Seattle-Tacoma International Airport (SEA) from downtown Seattle. It is also convenient during rush hour to help you avoid traffic.

Prefer to fly direct from Seattle to Singapore?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Singapore Changi.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Singapore Changi Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Singapore Changi

Tuesday

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

Singapore Changi to Seattle/Tacoma Intl

Tuesday

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

Reviews of the top 5 airlines serving from Seattle to Singapore

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Singapore. 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 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 1218 reviews
8.5Boarding
8.2Entertainment
8.7Crew
8.3Comfort
8.1Food
Airline reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

8.0 ExcellentCarlos J, Apr 2026
TPA - ATL
Read more Korean Air reviews

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

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

Limited food options. I dont like chicken or even fish but that’s the only option. Sad to say not impress

Subject: Complaint Regarding Cabin Temperature on Flight SQ447 (DAC–SIN)** Dear Singapore Airlines Customer Service, I am writing to express my disappointment regarding my recent experience on flight SQ447 from Dhaka (DAC) to Singapore (SIN). After boarding, it became apparent that the cabin air conditioning was not functioning adequately. When we initially raised the concern, a flight attendant informed us that it would take approximately 10 minutes for the temperature to cool down once the aircraft began operating. We trusted this explanation; however, the cabin remained uncomfortably warm, and many passengers—including my family—were sweating for an extended period. After approximately 45 minutes, I raised the issue again. While the attendant mentioned that adjustments had been made, the response did not reflect the seriousness of the ongoing discomfort. It was only after about an hour into the flight that the temperature finally improved and the cabin became more comfortable. I also spoke with several other passengers seated nearby, and they confirmed they were experiencing the same issue. As a frequent traveler who has always associated Singapore Airlines with high standards of service, this experience was very disappointing. It has made me reconsider choosing this route with your airline in the future. I hope you will review this incident and take the necessary steps to ensure that such situations are handled more promptly and professionally going forward. Thank you for your attention to this matter. Sincerely, Mohammed Shahriar

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

Very concerned with guest comforts going out of their way to accommodate special dietary needs when the guests hadn’t pre-ordered.

Kayak really screwed up by offloading the booking to a third party. They were completely inept and caused a bunch of toil. I will never use Kayak again.

I had ordered vegetarian food. What I was presented was extremely dissatisfying and not up to the mark. I pretty much did not eat entire 19 hours. For.an airline voted as best in business, it was extremely disappointing. Seats were not comfortable to sleep. Entertainment system didn’t have much choice. WiFi didn’t work for more than half the time. Cabin crew were also difficult to understand. A bit of diversity like Emirates crew would go a long way.

A little more room from the reclining seat in the front of me.

It was okay. I feel that Singapore Airlines isn't as good as it used to be but it's still not bad

It was fine. Nothing special but nothing went wrong so all good.

Overall the airline tried to give excellent service. The wheelchair service was bad at SFO. My baggage was also delayed but I thank them for taking the trouble to find it and deliver it to my home.

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

Kayak uses scammer sites to steal money from their victims.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Customer service and attention to details. The food was good.

When one asks for water because they are dehydrated, bring more then a sip or two in a small cup. Bring them a whole bottle.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

Better screens, it would have been nice to have more comfortable seats.

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment they offer could use some games, and maybe they could add some cookies to the snack menu. And the automated messages are a bit repetitive. But it was comfortable temperature wise and the seats were comfortable. The crew is very polite and helpful

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

I was promised by United Airline (operated by ANA) that I will be seated together with my kids as I am the only adult flying with two minors. We did not get seats together in our 11 hours flight from LA to Tokyo. When asked at the gate, ANA representative said United Airline should have informed them that there is a parent flying with two minors. He said they can’t do anything in the system as the flight is full. He ask me to ask passengers next to me and the kids if they are willing to change seats. This is ridiculous! However, I went in the flight and asked other passages but no one willing to change seats. 11 hours and we were seating separately. I was very disappointed with this. It made things super inconvenient for me.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

Flight cancelled instead of leaving Friday am now, maybe, leaving Sunday

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Flight went very well. Cabin crew were all courteous and very helpful, always with smiles on their faces. Food was great. I always love heated nuts with wine. Flying business class with Philippine Airlines is always a pleasant experience.

Great food selection in lounge. Excellent bartender, friendly staff. Good service on the plane.

Check in process was excellent. Lounge needs improvement. Food not palatable and no good choices.

It was never explained why the departure flight was canceled and delayed for 1.5 hours. It would have been nice to stick with the original itinerary.

Flight was good took off on time arrived early. Crew was awesome and did a great job. Very helpful and courteous. Bags arrived super fast with no hassles. Great flight!!!!!!

A shameful national carrier. Service has gone down from the highs of a decade before. You don’t feel the Filipino hospitality. It’s an aging fleet. Nil comfort, and I flew premium economy.

Many movies do not have captions, which would have been helpful when you have to live with the flight engine noise.

Everything was fantastic!!!! I can’t wait to fly home 😃!!!!!

I was glad that the plane was not totally full.

reach the standard, crew tried to fix up issues fast.

Everything you need to know for your flight from Seattle to Singapore

Information on your arrival and departure airports