International route
Cheap flights from Seattle to Bangkok
Seattle-Tacoma International Airport (SEA) to Suvarnabhumi Airport (BKK). 7,448 miles, connecting flights only.
SEA to BKK at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 7,448 milesgreat-circle
- Typical flight time
- 15h 15mif flown nonstop
- Nonstop airlines
- None (connecting only)
- Nonstop flights per day
- 0connections available
- Cheapest month
- February 2027over the next six months
- Best day to fly
- Wednesday20% less than Friday
- Time difference
- 14h aheadBangkok vs Seattle
Seattle to Bangkok
Round trips from $480
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Feb 2.
Cheapest month: February 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppSeattle to Bangkok fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Seattle to Bangkok
No nonstop service: 23 airlines offer one-stop itineraries.
- EIAer LingusConnecting via DUB · first checked bag from $70
- ACAir CanadaStar AllianceConnecting via YVR, YUL, YYC · first checked bag from $35
- AIAir IndiaStar AllianceConnecting via BOM · first checked bag included
- ASAlaska AirlinesoneworldConnecting via PDX, SFO, LAX · first checked bag from $35
- AAAmerican AirlinesoneworldConnecting via PHX, LAX · first checked bag from $40
- NHANA All Nippon AirwaysStar AllianceConnecting via HND, NRT · first checked bag included
- OZAsiana AirlinesStar AllianceConnecting via ICN · first checked bag included
- BABritish AirwaysoneworldConnecting via LHR · first checked bag from $75
- CXCathay PacificoneworldConnecting via HKG · first checked bag included
- CIChina AirlinesSkyTeamConnecting via TPE · first checked bag included
- DLDelta Air LinesSkyTeamConnecting via SLC, BOS · first checked bag from $35
- BREVA AirStar AllianceConnecting via TPE · first checked bag included
- AYFinnaironeworldConnecting via HEL · first checked bag from $70
- AZITA AirwaysConnecting via FCO · first checked bag from $70
- JLJapan AirlinesoneworldConnecting via HND, NRT, KIX · first checked bag included
- B6JetBlueConnecting via BOS · first checked bag from $40
- KEKorean AirSkyTeamConnecting via ICN · first checked bag included
- LHLufthansaStar AllianceConnecting via MUC · first checked bag from $75
- SKSAS Scandinavian AirlinesSkyTeamConnecting via CPH · first checked bag from $70
- SQSingapore AirlinesStar AllianceConnecting via SIN · first checked bag included
- LXSWISSStar AllianceConnecting via GVA · first checked bag from $75
- UAUnited AirlinesStar AllianceConnecting via ORD, SFO, LAX · first checked bag from $40
- Y4VolarisLow-costConnecting via TIJ · first checked bag from $45
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Los Angeles (LAX)AAUAAS3 airlines
- Boston (BOS)DLB62 airlines
- San Francisco (SFO)UAAS2 airlines
- Tokyo (HND)JLNH2 airlines
- Tokyo (NRT)JLNH2 airlines
Tips for this route
- There is no scheduled nonstop between SEA and BKK. Every itinerary connects, most often through LAX, BOS or SFO, so sort results by total travel time rather than price alone.
- February 2027 is the cheapest month to fly over the next six months, with round trips from $480; September 2026 is the most expensive at $634 and up, a difference of $154 per traveler.
- Departing on a Wednesday averages 20% less than a Friday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
- Bangkok is 14 hours ahead of Seattle. Expect to lose 14 hours on the clock heading east, so an overnight or late-afternoon departure tends to arrive at a more usable hour.
Destination guide
Bangkok: Temples, street food and the doorway to Southeast Asia
Bangkok is the cheapest big city in the world to enjoy once you land: $2 street meals, $40 hotel rooms and a river of golden temples. Reach it with one stop from most US cities via Tokyo, Seoul, Taipei or Doha, then fan out to Chiang Mai and the islands.
Best time to visit: November–February is the cool, dry season and the best time. March–May is very hot; June–October is the monsoon with short heavy downpours, lower prices and green countryside.
Flying the other way? Bangkok to SeattleFares, airlines and tips for BKK to SEA.Ready to compare live fares?
See every airline on SEA–BKK side by side with bags and seat rules spelled out.
Search Seattle to BangkokSeattle to Bangkok: common questions
How long is the flight from Seattle to Bangkok?
There are no nonstop flights, so the trip from Seattle (SEA) to Bangkok (BKK) takes 15h 15m of flying plus a layover, usually 18h 15m or more door to door across 7,448 miles.
Which airlines fly nonstop from SEA to BKK?
No airline currently flies nonstop between Seattle (SEA) and Bangkok (BKK). The most common connections are through LAX, BOS and SFO.
What is the cheapest month to fly from Seattle to Bangkok?
Over the next six months, February 2027 has the lowest round-trip fares from Seattle (SEA) to Bangkok (BKK), starting at $480 per traveler including taxes and fees. Within any month, Wednesday departures average the lowest prices.
How far in advance should I book Seattle to Bangkok flights?
Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Seattle and Bangkok?
Bangkok is 14 hours ahead of Seattle. SEA is on America/Los Angeles time and BKK on Asia/Bangkok time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.