Cheap flights from Seattle to Bangkok from $282
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Bangkok departing on 11/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Seattle to Bangkok
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Korean Air flights from Seattle to Bangkok
Our best Korean Air deals on Seattle to Bangkok flight tickets
United Airlines flights from Seattle to Bangkok
Our best United Airlines deals on Seattle to Bangkok flight tickets
See travel insights to Bangkok from
How to get the cheapest flight ticket from Seattle to Bangkok
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Bangkok?
If you aren’t able to travel during the month of February, then book flights to Bangkok from Seattle during March instead. Flights to Bangkok in March, while not as cheap as those in February, still average around $823.
What is the cheapest day to depart on your flight to Bangkok?
On average, the least expensive day to fly to Bangkok from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $931. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Seattle to Bangkok on a Friday will generally be more expensive and average around $1,111. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Bangkok?
According to our data, the cheapest time of day to fly to Bangkok is in the morning. momondo users have found flights departing from Seattle to Bangkok in the morning for as low as $986. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $1,081. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Bangkok?
You are more likely to see cheaper flights to Bangkok from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $943 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Seattle for as low as $814 on momondo.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Bangkok?
Singapore Airlines, Korean Air, and Asiana Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Bangkok
What airlines fly to Bangkok?
China Airlines, EVA Air and Asiana Airlines are the top three most popular airlines that fly to Bangkok from Seattle according to our data. China Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Bangkok. Keep in mind that there are 17 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.
Cheap Seattle to Bangkok flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Bangkok
How far is Seattle/Tacoma Intl to Bangkok by plane?
A flight from Seattle/Tacoma Intl to Bangkok will travel around 7436.9 mi. 18h 25m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Bangkok?
Prices for flights from Seattle/Tacoma Intl Airport to Bangkok were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bangkok?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Bangkok is 17 as of July 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bangkok?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Bangkok.
What documentation or ID do you need to fly to Bangkok?
The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Best airlines flying from Seattle to Bangkok
Compare and see reviews for airlines that fly from Seattle to Bangkok with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $433 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $600 | Free Cancellation | Rating 8.1 1,320 reviews | |||
| PriceFrom $633 | Free Cancellation | Rating 8.2 452 reviews | |||
| PriceFrom $695 | Free Cancellation | Rating 8.4 1,101 reviews | |||
| PriceFrom $708 | Free Cancellation | Rating 7.2 887 reviews | |||
| PriceFrom $739 | Free Cancellation | Rating 9.1 189 reviews | |||
| PriceFrom $755 | Free Cancellation | Rating 7.1 152 reviews | |||
| PriceFrom $757 | Free Cancellation | Rating 8.3 744 reviews | |||
| PriceFrom $759 | Free Cancellation | Rating 8.4 893 reviews | |||
| PriceFrom $773 | Free Cancellation | Rating 7.3 3,895 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Bangkok?
It is quick and easy to find Seattle to Bangkok flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Bangkok that suits you.
Can I find flights from Seattle to Bangkok with flexible booking policies on momondo?
Flights from Seattle to Bangkok with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Seattle to Bangkok?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bangkok from Seattle.
I’m not ready to book a flight from Seattle to Bangkok right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Seattle to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.