Find Cheap Flights from Seattle/Tacoma Intl to Osaka (SEA - OSA)

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Mon 2/19
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Good to Know

Low Season:
October
Best time to beat the crowds
5%
expected price decrease
High Season:
December
Most popular time to fly
24%
expected price increase
Average Price:
$1123
(avg. price over the last 2 weeks)
Good Deal:
$823
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Osaka

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $822 or less.
The cheapest flight from Seattle/Tacoma Intl to Osaka was found 33 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
Morning departure is around 19% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Seattle/Tacoma Intl to Osaka Flights

How long does a flight from Seattle/Tacoma Intl to Osaka take?
An average nonstop flight takes 14h 45m, covering a distance of 5006 miles.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Osaka?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($660), Air Canada ($717) and Air China ($788).
Do I need a passport to fly between Seattle/Tacoma Intl and Osaka?
Yes.
What’s the cheapest day of the week to fly Seattle/Tacoma Intl to Osaka?
For Seattle/Tacoma Intl to Osaka, Saturday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Osaka back to Seattle/Tacoma Intl, the best deals are generally found on Sunday, with Thursday being the most expensive.

Book cheap flights from Seattle/Tacoma Intl to Osaka (round-trip)

Airports
Origin
Seattle
$660
only
$660
Destination
Osaka
$660
only
$660
Sat, Mar 10
SEA
KIX
49h 05m
Fri, Mar 16
KIX
SEA
24h 15m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Jun 4
SEA
KIX
29h 40m
Wed, Jun 20
KIX
SEA
12h 31m
Trip: 17 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 21468 reviews
Overall
7.2
Boarding
7.3
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.5
YYC
YYZ
Good 7.0

Able to Get later flight since original flight cancelled.

flight delayed 2 hrs because of weather. Staff did not want to reschedule my next connector, just the Toronto flight

YYJ
YYZ
Okay 4.0

The flight wasn’t full, so I sat in my own row,?which offered spare leg room (I’m 6’2”). Time to fix the leg room issue on Rouge flights — it’s 2018.

Crew seemed uninterested in general. On phones in back while people struggling to find luggage space. Coffee cups and plastic utensils, etc, stored in overhead bins so people at the back had to search for carry-on space elsewhere, again, without assistance from on board crew. Offered service only once and many were sleeping so didn’t get anything. The overall check-in process could be easier, as the app doesn’t always work as it should.

YYZ
TLV
Excellent 8.0

the crew was extremely nice. i was mainly impressed by the many times they made the effort to serve water.

YYZ
BOS
Okay 4.0

That we eventually got a flight home.

Being stuck in Boston and Ottawa for 2 extra days and adding around $1200 on to our trip in hotels alone (I was travelling with 4 kids on a school trip and my wife). Additionally, we didn’t find out the flights were cancelled until we arrived at the airport. Apparently, they had been cancelled 2 hours before but there was no notification. Air Canada offered no help whatsoever and the guy at the “service” desk in Boston literally said there was nothing he could do to help. Not even find a new flight. Spent 90 minutes on the phone trying to re-book, plus re-booking hotel along the way.

YVR
TPE
Okay 5.6

Entertainment

Steward. & meals

Thu, Apr 12
SEA
KIX
33h 25m
Tue, Apr 24
KIX
SEA
44h 39m
Trip: 13 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3939 reviews
Overall
6.5
Boarding
6.7
Comfort
6.4
Crew
6.9
Entertainment
6.0
Food
6.0
PEK
FRA
Excellent 10.0

Everything. Air China comfort and service is great. I travel a lot to China and Air China is my first choice.

EWR
PEK
Mediocre 3.6

Their boarding are faster

Crew don't pay attention to your request

PEK
SFO
Excellent 10.0

The flight attendants where excellent.

n/a

DEL
PEK
Good 7.3

overall it was good; crew was excellent, kept the plane, specially toilet clean throughout.

food selection for vegetarians better movie selection; english in TV documentaries.

IAD
PEK
Excellent 10.0

Level of Service

Thu, Mar 8
SEA
KIX
37h 09m
Mon, Mar 19
KIX
SEA
49h 17m
Trip: 11 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 4283 reviews
Overall
7.1
Boarding
7.2
Comfort
7.0
Crew
7.5
Entertainment
6.8
Food
6.7
TAO
CAN
Okay 4.6

No entertainment, not even an English language newspaper. Delayed boarding and departure, as usual.

BKK
CAN
Good 7.6

For such a classy airline, they have terrible coffee and tea

CAN
LAX
Excellent 10.0

Excellent

CAN
HAK
Excellent 10.0

Fast plane

SIN
CAN
Excellent 8.3

Flew Business class from SIN to CAN. Seats were OK, crew was very attentive and eager to please. Food was good.

Seat did not go back as far as I would have liked

Mon, Apr 30
SEA
KIX
28h 45m
Fri, May 4
KIX
SEA
29h 08m
Trip: 5 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 4038 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.4
Entertainment
8.2
Food
7.7
BKK
HKG
Good 7.6

Great crew, very professional. Food good. Easy boarding. Staff at check in were great fixing the problem of my seating.

I had booked my seats online, however nothing was in place when checking in.

JFK
HKG
Mediocre 3.3

Nathing

MNL
HKG
Good 6.0

Food is ok.

Washrooms are small and dirty.

HKG
YYZ
Okay 5.6

Food is fine.

washrooms are small and dirty.

ORD
HKG
Mediocre 2.0

Delayed flight and promised me in Chicago and in Flight that the plane in Hong Kong would wait. Now I am sitting inside the Airport waiting until morning to fly out. I will never fly with them again. LIARS!

Fri, Apr 27
SEA
KIX
36h 35m
Wed, May 9
KIX
SEA
55h 55m
$1003
Trip: 13 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 319 reviews
Overall
7.1
Boarding
7.1
Comfort
7.2
Crew
7.5
Entertainment
6.7
Food
6.8
SZX
SEA
Excellent 9.3

Kept me well hydrated, supplied tissues that helped me bear a long flight while sick. Early arrival appreciated. Fresh fruit was good.

Crew might have cleared away medications by mistake but they tried hard to find it, inquired all attendants and even looked through the trash. I missed the passing of of declaration forms twice while I was in the bathroom and when we landed the customs people directed me wrong so I had to wait a long time in line to get through customs without water which made me sicker and I had to go to the doctor.

XMN
HKG
Excellent 10.0

I liked the price of the trip and free hotel for long transit time.

Early arrival in Xiamen (5am) nothing open and no way to exchange money for taxi or food. Eventually found ATM that solved that problem. Wasn't dressed for or expecting the cold weather. Communications were a problem.

XMN
YVR
Excellent 10.0

We left 13 mins late but landed 45 mins earlyearly

XMN
LAX
Okay 4.0

u had to transfer ur luggages even though its the same airline. what a joke? u had to get through numerous security points to get through the airport what the hell?

YVR
XMN
Excellent 10.0

Price and flight were great. Communicating was small problem. 5 am arrival nothing open so couldn't change money for food, taxi etc. Finally found an ATM that worked. People used their cell phones to try and communicate.

Some obstacles with early morning arrival and communications

Sun, Apr 8
SEA
KIX
37h 05m
Mon, Apr 23
KIX
SEA
32h 25m
$1004
Trip: 16 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 3044 reviews
Boarding
8.4
Comfort
8.2
Crew
8.7
Entertainment
8.0
Food
8.1
JFK
ICN
Okay 5.6

when they leave laugage in korea and they deliver within 2 days

ICN
MNL
Good 6.0

i love the foods and entertainment

CEB
ICN
Excellent 9.3

i like how accomodating the crew was

ORD
ICN
Good 7.3

On time, the decor, side seats seems to have more legroom

The crew wasn't the friendly

MNL
ICN
Okay 4.0

Service

Long delay in a small departure area with not enough seats especially for seniors. It took a while before we were allowed to board the plane. Everyone is complaining.

Wed, Apr 18
SEA
KIX
27h 40m
Sat, Apr 28
KIX
SEA
24h 20m
$1024
Trip: 11 days
8.6ExcellentShow reviews
Overall 8.6 Excellent
Based on 4049 reviews
Boarding
8.8
Comfort
8.6
Crew
8.9
Entertainment
8.5
Food
8.3
IAH
TPE
Excellent 10.0

Very much

TPE
SFO
Good 6.0

i wish they had better hygiene

TPE
SFO
Excellent 9.0

Crew, boarding, services.

Food can be better.

ORD
TPE
Excellent 9.6

Eveyone was syper friendly and the food was decent. They were very good about allowing me to change seats to an open seat once the doors were closed.

The selection of movies to watch was not ver good. They had a few (10-15) choices for a few genre but over all there were obly 1 or 2 decent movies per genre.

SFO
TPE
Excellent 10.0

Great seats!

Wed, Mar 14
SEA
KIX
52h 15m
Wed, Mar 21
KIX
SEA
25h 01m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jun 6
SEA
KIX
29h 40m
Wed, Jun 20
KIX
SEA
16h 14m
Trip: 15 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 21468 reviews
Overall
7.2
Boarding
7.3
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.5
YYJ
YYZ
Okay 4.0

The flight wasn’t full, so I sat in my own row,?which offered spare leg room (I’m 6’2”). Time to fix the leg room issue on Rouge flights — it’s 2018.

Crew seemed uninterested in general. On phones in back while people struggling to find luggage space. Coffee cups and plastic utensils, etc, stored in overhead bins so people at the back had to search for carry-on space elsewhere, again, without assistance from on board crew. Offered service only once and many were sleeping so didn’t get anything. The overall check-in process could be easier, as the app doesn’t always work as it should.

EWR
YYC
Good 6.0

Entertainment and crew helped make the situation better but a 3 hour delay made my experience unpleasant.

YYC
YYZ
Good 7.0

Able to Get later flight since original flight cancelled.

flight delayed 2 hrs because of weather. Staff did not want to reschedule my next connector, just the Toronto flight

YYZ
POS
Okay 4.6

It really sad to know on a 5 and a half hour flight they only offer coffee tea or soda ☹☹ . Never knew about the changes in purchasing a meal or snack..

Should have been informed somewhere about the changes in purchasing a meal.

YYZ
BOS
Excellent 9.0

The flight from Toronto to Boston is extremely short, about an hour. I don’t feel as though I can rate the food since I didn’t buy any, it just doesn’t give me an option to not rate it. It was a completely full flight. It was as comfortable as can be. It’s a smaller plane so you feel everything but the captains were good flyers.

I’m not sure if this is something I can really complain about but I wish the flight attendants would’ve spoken a bit lower. For a plane where half of the people there had missed their connecting flight and were put on a 6:30 am flight, I don’t think we wanted to hear about their detailed personal lives.

Tue, Apr 3
SEA
KIX
45h 00m
Mon, Apr 16
KIX
SEA
41h 54m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Apr 28
SEA
KIX
49h 35m
Thu, May 10
KIX
SEA
25h 29m
Trip: 13 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3939 reviews
Overall
6.5
Boarding
6.7
Comfort
6.4
Crew
6.9
Entertainment
6.0
Food
6.0
PEK
FRA
Excellent 10.0

Everything. Air China comfort and service is great. I travel a lot to China and Air China is my first choice.

PEK
BKK
Excellent 10.0

Level of Service

LAX
PEK
Okay 4.0

Efficient and friendly staff

Seat backs barely recline - not acceptable for flight of this distance. For this reason will not book Air China again

PEK
IAH
Excellent 8.0

Crews were polite and helpful

Food was edible but horrible! It makes me doubt this country’s 5000-year history of cuisines.

PEK
JFK
Okay 5.6

The style of the pillows and blankets were nice. The pillows were really comfortable and a good size. The taste of the food was okay. I honestly expected a horrible experience, it was not fantastic but it was better than what I anticipated.

The sealed blanket had white hair as if from an older person. Although I liked the pillow, on my return flight I used it to sleep, I used it for my back the entire time going, when I got home I noticed I was developing a sty on my eyelid. My companions noticed that the sometimes when he received his food it was still cold in some parts. On my return flight there were a few times my row was skipped for drinks. On my return flight the stewardess seemed hesitant when I asked for an additional drink. I ordered tea and asked for water. The gate agent in Beijing was extremely rude and unhelpful, she ignored us and even tossed our ticket back at us when we tried to ask about our seats for the flight.

Mon, Jun 4
SEA
KIX
37h 30m
Wed, Jul 4
KIX
SEA
16h 14m
Trip: 31 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 21468 reviews
Overall
7.2
Boarding
7.3
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.5
YYZ
BOS
Okay 4.0

That we eventually got a flight home.

Being stuck in Boston and Ottawa for 2 extra days and adding around $1200 on to our trip in hotels alone (I was travelling with 4 kids on a school trip and my wife). Additionally, we didn’t find out the flights were cancelled until we arrived at the airport. Apparently, they had been cancelled 2 hours before but there was no notification. Air Canada offered no help whatsoever and the guy at the “service” desk in Boston literally said there was nothing he could do to help. Not even find a new flight. Spent 90 minutes on the phone trying to re-book, plus re-booking hotel along the way.

YYZ
POS
Okay 4.6

It really sad to know on a 5 and a half hour flight they only offer coffee tea or soda ☹☹ . Never knew about the changes in purchasing a meal or snack..

Should have been informed somewhere about the changes in purchasing a meal.

YYZ
BOS
Excellent 9.0

The flight from Toronto to Boston is extremely short, about an hour. I don’t feel as though I can rate the food since I didn’t buy any, it just doesn’t give me an option to not rate it. It was a completely full flight. It was as comfortable as can be. It’s a smaller plane so you feel everything but the captains were good flyers.

I’m not sure if this is something I can really complain about but I wish the flight attendants would’ve spoken a bit lower. For a plane where half of the people there had missed their connecting flight and were put on a 6:30 am flight, I don’t think we wanted to hear about their detailed personal lives.

SFO
YVR
Okay 5.6

Entertainment

Meals & steward

YYZ
TLV
Excellent 8.0

the crew was extremely nice. i was mainly impressed by the many times they made the effort to serve water.

Mon, Apr 30
SEA
KIX
45h 35m
Mon, May 7
KIX
SEA
40h 22m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Apr 12
SEA
KIX
33h 25m
Fri, Apr 20
KIX
SEA
44h 38m
Trip: 9 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3939 reviews
Overall
6.5
Boarding
6.7
Comfort
6.4
Crew
6.9
Entertainment
6.0
Food
6.0
IAD
PEK
Excellent 10.0

Level of Service

EWR
PEK
Mediocre 2.0

The flight itself was fine

Air China canceled my original flight without notification, put me on a different flight and then changed my connecting flight to the next day so I landed an entire day after my original plan. They also put me inside a very uncomfortable hotel in Beijing.

LAX
PEK
Okay 4.0

Efficient and friendly staff

Seat backs barely recline - not acceptable for flight of this distance. For this reason will not book Air China again

BKK
PEK
Okay 5.0

A completely packed plane on a 14 hour flight from Beijing to NYC, freezing cold. I was too exhausted to eat my second meal. The flight attendants were great, but i"ll avoid flying Air China in the future.

PEK
BKK
Excellent 10.0

Level of Service

Tue, Jun 5
SEA
KIX
14h 45m
Wed, Jun 13
KIX
SEA
12h 31m
Trip: 9 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 21468 reviews
Overall
7.2
Boarding
7.3
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.5
YUL
YYZ
Good 7.5

the crew was nice and helpul with my worry about loosing the flight to tel aviv because the flight to toronto was late due to snow in toronto.

while on my way to the airport i got a message that my flight was cancelled. luckily i had a friend who took care of putting me on another flight to toronto. weather created changes but just sending a message your flight is cancelled is not the right way to deal with things. when finally arriving to toronot i had to rush to my flight to tel aviv, it was insane, just to realize that also this flight was postponed due to the weather. air canada should be more involved in helping travelers to deal with their connections.

YYC
YYZ
Good 7.0

Able to Get later flight since original flight cancelled.

flight delayed 2 hrs because of weather. Staff did not want to reschedule my next connector, just the Toronto flight

PHL
YYZ
Excellent 8.0

Issues caused by weather, otherwise flight was fine.

SFO
YVR
Okay 5.6

Entertainment

Meals & steward

YYJ
YYZ
Okay 4.0

The flight wasn’t full, so I sat in my own row,?which offered spare leg room (I’m 6’2”). Time to fix the leg room issue on Rouge flights — it’s 2018.

Crew seemed uninterested in general. On phones in back while people struggling to find luggage space. Coffee cups and plastic utensils, etc, stored in overhead bins so people at the back had to search for carry-on space elsewhere, again, without assistance from on board crew. Offered service only once and many were sleeping so didn’t get anything. The overall check-in process could be easier, as the app doesn’t always work as it should.

Mon, Apr 9
SEA
KIX
53h 50m
Tue, Apr 17
KIX
SEA
32h 00m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Apr 8
SEA
KIX
33h 15m
Mon, Apr 23
KIX
SEA
44h 39m
Trip: 16 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 3939 reviews
Overall
6.5
Boarding
6.7
Comfort
6.4
Crew
6.9
Entertainment
6.0
Food
6.0
BKK
PEK
Okay 5.0

A completely packed plane on a 14 hour flight from Beijing to NYC, freezing cold. I was too exhausted to eat my second meal. The flight attendants were great, but i"ll avoid flying Air China in the future.

PEK
JFK
Okay 5.6

The style of the pillows and blankets were nice. The pillows were really comfortable and a good size. The taste of the food was okay. I honestly expected a horrible experience, it was not fantastic but it was better than what I anticipated.

The sealed blanket had white hair as if from an older person. Although I liked the pillow, on my return flight I used it to sleep, I used it for my back the entire time going, when I got home I noticed I was developing a sty on my eyelid. My companions noticed that the sometimes when he received his food it was still cold in some parts. On my return flight there were a few times my row was skipped for drinks. On my return flight the stewardess seemed hesitant when I asked for an additional drink. I ordered tea and asked for water. The gate agent in Beijing was extremely rude and unhelpful, she ignored us and even tossed our ticket back at us when we tried to ask about our seats for the flight.

IAD
PEK
Excellent 10.0

Level of Service

PEK
BKK
Excellent 10.0

Level of Service

PEK
IAD
Excellent 10.0

Level of Service and the food.

Sun, Jun 3
SEA
KIX
14h 45m
Wed, Jun 20
KIX
SEA
16h 14m
Trip: 18 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 21468 reviews
Overall
7.2
Boarding
7.3
Comfort
7.0
Crew
7.7
Entertainment
6.9
Food
6.5
YYZ
BOS
Okay 4.0

That we eventually got a flight home.

Being stuck in Boston and Ottawa for 2 extra days and adding around $1200 on to our trip in hotels alone (I was travelling with 4 kids on a school trip and my wife). Additionally, we didn’t find out the flights were cancelled until we arrived at the airport. Apparently, they had been cancelled 2 hours before but there was no notification. Air Canada offered no help whatsoever and the guy at the “service” desk in Boston literally said there was nothing he could do to help. Not even find a new flight. Spent 90 minutes on the phone trying to re-book, plus re-booking hotel along the way.

YYZ
BOS
Excellent 9.0

The flight from Toronto to Boston is extremely short, about an hour. I don’t feel as though I can rate the food since I didn’t buy any, it just doesn’t give me an option to not rate it. It was a completely full flight. It was as comfortable as can be. It’s a smaller plane so you feel everything but the captains were good flyers.

I’m not sure if this is something I can really complain about but I wish the flight attendants would’ve spoken a bit lower. For a plane where half of the people there had missed their connecting flight and were put on a 6:30 am flight, I don’t think we wanted to hear about their detailed personal lives.

EWR
YYC
Good 6.0

Entertainment and crew helped make the situation better but a 3 hour delay made my experience unpleasant.

ICN
YYZ
Excellent 9.6

This was my first time flying Air Canada. Our flight was delayed by 4 hours because they had to deice the plane. Yes it was frustrating but I would much rather have a flight of upset passengers then risking our lives. The captains and the crew went out of their way to make sure that we were the most comfortable. They gave us food and drinks as we waited and were extremely patient. Upon arrival many passengers had missed their connecting flights, including myself. They put us on the next flight out and gave all passengers a hotel and meals for the night. I would definitely recommend Air Canada. The plane itself is also pretty spacious so don’t be afraid to fly economy.

Nothing really. They were great. I mean, definitely wished my flight wasn’t delayed. Although It wasn’t their fault that they needed to deice the plane, that’s something that should’ve been accounted for way before our flight was supposed to take off.

YYZ
POS
Okay 4.6

It really sad to know on a 5 and a half hour flight they only offer coffee tea or soda ☹☹ . Never knew about the changes in purchasing a meal or snack..

Should have been informed somewhere about the changes in purchasing a meal.

Thu, Apr 5
SEA
KIX
42h 20m
Mon, Apr 23
KIX
SEA
47h 25m
Trip: 19 days
Overall 0.0 Poor
Based on 0 reviews
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Seattle/Tacoma Intl to Osaka Flight Information

Flights Arrive in Osaka
Flights Depart from Seattle/Tacoma Intl
Flight Price $660
Distance 5006 miles
Airlines Air Canada, Air China, China Southern, Cathay Pacific, XiamenAir, Asiana Airlines, EVA Air
*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.