Cheap Flights from Seattle to Kansai International (Osaka)

Compare Seattle to Kansai International (Osaka) flight deals

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Flight deals from Seattle to Kansai International (Osaka)

Looking for a cheap last-minute deal or the best return flight from Seattle to Kansai International (Osaka) Airport? If you want to travel next month, return fares start from R 19,600. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Kansai International (Osaka)

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Kansai International (Osaka) flights are currently cheapest in September.

Seattle to Kansai International (Osaka): Alternative routes

Compare routes from Seattle to Osaka below. You may find an airport to fly into that's cheaper, faster, or easier than Kansai International (Osaka).

Seattle to Osaka: Flight information

The things to know before you go.
Cheapest flight foundR 7,177
Cheapest month to flySeptember

Finding cheap flights from Seattle to Kansai International (Osaka): Frequently asked questions

The best price we found for a return flight from Seattle to Kansai International (Osaka) is R 13,885. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Kansai International (Osaka). But we found flights with one stop from R 13,885.
As of May 2026, there are no flights flying from Seattle to Kansai International (Osaka).
The cheapest month to fly from Seattle to Kansai International (Osaka) is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Kansai International (Osaka) Airport on Tuesday, 29 September 2026.
No airlines currently offer direct flights between Seattle and Kansai International (Osaka) Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kansai International (Osaka) but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Osaka is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Kansai International (Osaka) is Asiana Airlines .

Flying from Seattle to Kansai International Airport (KIX): What you need to know

  • Osaka is 17 hours ahead of Seattle. Kansai International Airport is located in Osaka, which operates on the UTC+9 timezone.

  • To ensure you catch your flight from Seattle to KIX, leave plenty of time to check in and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • Hopping on a plane during a peak month like July? High seasons (like Christmas and New Year) can add another hour at check-in and security. Play things extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • We make it simple to find cheap flights from Seattle to KIX with a stopover. To explore your options departing from Seattle-Tacoma International Airport (SEA), deselect 'Direct flights only.' Next, pick a flight offering a stop long enough to tour your chosen city. Major stopovers between SEA and KIX include:

    • Tokyo Haneda International Airport (HND)

    • San Francisco International Airport (SFO)

    • Tokyo Narita International Airport (NRT)

  • SEA is about 23 kilometres from central Seattle. If you're catching a taxi, driving or ride-sharing from the centre, it'll take you 25 minutes or so to get there, depending on traffic. If you're using public transport, expect the trip time to be around 35 minutes.

  • Catching an early flight from Seattle to Kansai International Airport? Avoid the last-minute rush to the terminal (and get a little more snooze time) by staying at one of these stays close to Seattle-Tacoma International Airport:

  • Seattle-Tacoma International Airport scores high marks for on-time performance. 81% of flights that depart SEA arrive at their destination on time.

Seattle Paine Field International Airport (PAE)

  • You can arrive at PAE from the centre of Seattle in approximately 40 minutes by car (depending on traffic conditions). The journey by public transport takes roughly 1 hour 30 minutes to cover the 40 kilometres or so.

  • Taking off bright and early? You might like to check in to one of these accommodation options near Seattle Paine Field International Airport the day before your Seattle to KIX flight:

  • Seattle Paine Field International Airport has a strong track record for reliability and timeliness. 80% of flights out of here arrive right on target.

About Kansai International Airport (KIX)

Getting from Kansai International Airport (KIX) to central Osaka

  • Kansai International Airport is around 48 kilometres from central Osaka. It takes around 50 minutes or so to get to the city by car.

  • Travelling on public transport will take you around 45 minutes.

How to find the cheapest flights from Seattle to Kansai International Airport (KIX)

  • Currently, R 7,118 is the lowest price we've found for a one-way ticket from Seattle to Kansai International Airport. The cheapest price for a return flight is R 13,885. Keep in mind fares can change due to demand at the time of booking.

  • Don't leave everything to the last moment. You're more likely to find cheap flights from Seattle to KIX if you book in advance. Airlines often have some excellent early bird deals.

  • If you have some flexibility with your trip dates, use the 'Whole month' search tool. It'll give you the cheapest price in every month when searching for your Seattle to Kansai International Airport ticket.

  • You don't need to search every day to find out if prices have dropped when you set up a Price Alert. We'll notify you as soon as there's a better deal on plane tickets from Seattle to KIX.

  • Filters make it easier to land a deal on your flight from Seattle to Kansai International Airport. Choose the departure times, airlines and number of stops that match your plans. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from Seattle to Kansai International Airport (KIX)

  • April is when most people book flights from Seattle to Kansai International Airport (KIX). Plan your visit to Osaka in November for a quieter experience.

  • When booking your Seattle to KIX plane ticket, consider the weather you're most comfortable in. August is the warmest month in Osaka, with temperatures ranging from 21ºC (70ºF) to 34ºC (93ºF).

  • If you like travelling in cooler conditions, look for a cheap ticket from Seattle to Kansai International Airport in January when temperatures are between 0ºC (32ºF) and 10ºC (50ºF).

More about Osaka

Explore more of Japan

  • Nagoya is just one of the many cities in Japan waiting to be explored after you've experienced Osaka. Around 177 kilometres away to the northeast, well-known attractions include Nagoya Castle, Sakura Park and Ninomaru Garden.

  • If there's time to check out another corner of Japan, head for Toyohashi, roughly 209 kilometres east of Osaka. Ueno Park, Yoshida Castle and Fukushima Park are key highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.