Find Cheap Flights from Seattle/Tacoma Intl to Kathmandu Tribhuvan (SEA - KTM)

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Good to Know

Low Season:
March
Best time to beat the crowds
3%
expected price decrease
High Season:
June
Most popular time to fly
12%
expected price increase
Average Price:
$1148
(avg. price over the last 2 weeks)
Good Deal:
$957
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Kathmandu Tribhuvan

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 $956 or less.
The cheapest flight from Seattle/Tacoma Intl to Kathmandu Tribhuvan was found 79 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be May, June and July. The cheapest month to fly is March.
Morning departure is around 13% more expensive 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 Kathmandu Tribhuvan Flights

How long does a flight from Seattle/Tacoma Intl to Kathmandu Tribhuvan take?
An average nonstop flight takes 25h 27m, covering a distance of 6966 miles.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Kathmandu Tribhuvan?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($618), Singapore Airlines ($875) and Emirates ($1058).
Do I need a passport to fly between Seattle/Tacoma Intl and Kathmandu Tribhuvan?
Yes.
What’s the cheapest day of the week to fly Seattle/Tacoma Intl to Kathmandu Tribhuvan?
For Seattle/Tacoma Intl to Kathmandu Tribhuvan, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Kathmandu Tribhuvan back to Seattle/Tacoma Intl, the best deals are generally found on Monday, with Thursday being the most expensive.

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

Airports
Origin
Seattle
$618
only
$618
Destination
Kathmandu
$618
only
$618
Wed, Apr 11
SEA
KTM
44h 25m
Wed, Apr 25
KTM
SEA
48h 20m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Aug 31
SEA
KTM
51h 20m
Sun, Sep 30
KTM
SEA
57h 54m
Trip: 31 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2330 reviews
Overall
8.8
Boarding
8.9
Comfort
8.6
Crew
9.0
Entertainment
8.7
Food
8.4
SFO
SIN
Excellent 10.0

Seats in economic class are not too contraint in space, food was good and entertainment system quite nice with large si play screen and large movie selection

LAX
ICN
Good 7.0

Loved the hot towel service

Entertainment could be better, however there were a few new and Oscar nominated movies available. Personal air conditioning would be great, I was too hot the entire flight

FRA
JFK
Excellent 10.0

wide seats. great service. on time.

food was not as good as one would expect.

SIN
LAX
Good 7.6

There was not much leg room in the seatings

SFO
SIN
Excellent 8.0

Premium economy

Sun, Feb 25
SEA
KTM
35h 00m
Sun, Mar 18
KTM
SEA
29h 35m
$1058
Trip: 21 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 10785 reviews
Overall
8.3
Boarding
8.3
Comfort
8.2
Crew
8.5
Entertainment
8.6
Food
8.1
DXB
BCN
Excellent 10.0

Everything as usual

Some rude passengers

DXB
DFW
Excellent 9.6

Service, atmosphere

1st food was same as it was from Karachi to Dubai

DXB
CCU
Okay 4.3

Despite me telling the crew a number of times that he temperature was FAR too low, no change was made. Now I am not a first time flyer and I know flights can get cold. I had a sweatshirt, socks, shoes, two blankets wrapped and it was still cold to the point that I put the blanket over my head. When I looked around the flight almost every single person was completely wrapped in blankets and had hoods, sarees, and scarves wrapped around their heads. I had my 1 year old infant who already had a head cold that I feel was worsened by the cold dry air. I spent my first few days in Kolkata pretty sick. I know the cold air doesn’t cause the illness but it certainly worsened any stuffy nose I had into a full blown cold and chest congestion. I was VERY upset by the discomfort on this flight especially after having a wonderful flight with Emirates from New York to Dubai. I really felt like the crew did not care despite clear discomfort the passengers were feeling. It was incredible how visible the discomfort was yet nothing was done to fix the temperature. The freezing cold air kept blowing right on everyone theoughout the flight.

SYD
CHC
Good 7.3

One carryon and no personal item - inconvenient and irritating! Security staff disposed of manicure scissors that met printed guidelines. Checked baggage was damaged, will avoid Emirates because of this. Staff, comfort, and food were very good, but will still select other airlines

ATH
EWR
Excellent 8.6

Better food than out of Newark. Crew helpful as always.

Legroom is poor but unlike the Newark-Athens leg, I was able to get an aisle seat that allowed me to stretch a bit. Choice of English language movies is poor. Depending on the price I would still prefer the Delta non stop flight from US to Greece because of the movie choices and ease of use of remote control.

Wed, Mar 21
SEA
KTM
33h 30m
Thu, Apr 5
KTM
SEA
52h 28m
$1098
Trip: 16 days
6.3GoodShow reviews
Overall 6.3 Good
Based on 4599 reviews
Overall
6.4
Boarding
6.5
Comfort
6.4
Crew
6.8
Entertainment
6.1
Food
5.9
PVG
JFK
Excellent 10.0

Flight attendants very attentive, courteous and professional. Even while children were sleeping during meal distribution. We were offered sandwiches for them to eat later. Phone can now be used in airplane mode. USB charger via screen.

Monitors sometimes turn on. Harder to give rest to eyes when lights turn on all monitors.

PVG
YVR
Mediocre 2.0

Every time the flight was late

SFO
PVG
Mediocre 3.3

Nothing spectacular to mention.

Airline scheduled only a 30 minute layover between Shanghai and Hong Kong. Obviously I missed it. Waited 3 hours for airline to put me up in hotel. Hotel was extremely sketchy. I'll never make the mistake of traveling with this airline again. Worst travel experience in many years, and I've been some rough places. Food was Terrible, too.

CTU
KWL
Excellent 10.0

Airline personnel very helpful. Plane was clean.

Finding China Eastern in very large terminal. Almost no signs in English.

HRB
PEK
Excellent 10.0

As always, I was impressed by the high level of professionalism.

Fri, May 4
SEA
KTM
50h 10m
Fri, May 25
KTM
SEA
44h 30m
Trip: 22 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Aug 28
SEA
KTM
42h 20m
Mon, Oct 1
KTM
SEA
33h 54m
Trip: 35 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2330 reviews
Overall
8.8
Boarding
8.9
Comfort
8.6
Crew
9.0
Entertainment
8.7
Food
8.4
LAX
NRT
Excellent 10.0

The seats are very comfortable. There was ample entertainment.

No complaints at all. They are very professional and I would chose them again.

SFO
SIN
Excellent 10.0

Seats in economic class are not too contraint in space, food was good and entertainment system quite nice with large si play screen and large movie selection

SFO
HKG
Excellent 8.3

The service from the Singapore Airlines is always impeccable. The food is delicious. The business class seat is spacious and wider than all the US airlines. There are plenty storage space in your seat space. The entertainment system has many choices and has a lot new release movies and shows.

Unfortunately, the ride on Boeing 777 is not as smooth as the Airbus'. The noise in the cabin is louder. The seat is comfortable but the bed is not. First, the flat bed is not transformed by a button and it needs a physical person to flip it over. The mat is thin and I can feel some hard edges while lying down. The noise from the engine transmits to the bed and it is hard to sleep even with the noise cancellation headphone.

SIN
SFO
Excellent 8.0

The food is very good in economy. Large screen tv gor movies and games.

all was good, nothing bad

SIN
LAX
Good 7.6

There was not much leg room in the seatings

Fri, Apr 6
SEA
KTM
64h 20m
Sun, Apr 15
KTM
SEA
43h 05m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Aug 28
SEA
KTM
42h 20m
Wed, Oct 3
KTM
SEA
33h 54m
Trip: 37 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2330 reviews
Overall
8.8
Boarding
8.9
Comfort
8.6
Crew
9.0
Entertainment
8.7
Food
8.4
SFO
SIN
Excellent 8.0

Premium economy

SIN
LAX
Excellent 9.6

SQ did a great job again. I plan to fly them in the future.

My only criticism is that the flight attendants didn’t pass through the cabin with water during the 9 hour flight.

LAX
NRT
Excellent 10.0

The seats are very comfortable. There was ample entertainment.

No complaints at all. They are very professional and I would chose them again.

SIN
LAX
Good 7.6

There was not much leg room in the seatings

SFO
SIN
Excellent 10.0

Seats in economic class are not too contraint in space, food was good and entertainment system quite nice with large si play screen and large movie selection

Wed, Apr 4
SEA
KTM
25h 27m
Thu, Apr 26
KTM
SEA
33h 43m
Trip: 23 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Feb 25
SEA
KTM
35h 00m
Wed, Apr 18
KTM
SEA
29h 15m
$1059
Trip: 52 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 10785 reviews
Overall
8.3
Boarding
8.3
Comfort
8.2
Crew
8.5
Entertainment
8.6
Food
8.1
IAD
DXB
Excellent 10.0

My flight left on time and from the moment I was greeted upon entering the A380 Airbus, I knew I was in for something very special. As prepared for departure, blankets and pillows were distributed amongst the passengers. Once in flight, dinner and in the morning, breakfast. And, throughout the night, the flight attendants attended to passenger requests for beverages and snacks. The plane was clean and, maybe I need to compliment my fellow passengers also, for the washrooms were clean and well maintained. We arrived on time and the trip seemed rather short with the entertainment of movies, news and inflight updates. Thanks again Emerates...you have brought back flying to it's original objective to give service and a safe means of travel. See you soon. Philip Dorn

BKK
HKG
Excellent 10.0

It was comfy, the crew seemed genuinely happy, and the food was good. Never going to complain about smoked salmon.

I didn't like that my connecting flight was with another airline

DXB
DFW
Excellent 9.6

Service, atmosphere

1st food was same as it was from Karachi to Dubai

LAX
DXB
Mediocre 2.0

Nothing

Super delayed !! Delayed time is longer than flying time. What the heck !!

SYD
CHC
Good 7.3

One carryon and no personal item - inconvenient and irritating! Security staff disposed of manicure scissors that met printed guidelines. Checked baggage was damaged, will avoid Emirates because of this. Staff, comfort, and food were very good, but will still select other airlines

Tue, Aug 28
SEA
KTM
42h 20m
Tue, Oct 2
KTM
SEA
42h 39m
Trip: 36 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2330 reviews
Overall
8.8
Boarding
8.9
Comfort
8.6
Crew
9.0
Entertainment
8.7
Food
8.4
LAX
ICN
Good 7.0

Loved the hot towel service

Entertainment could be better, however there were a few new and Oscar nominated movies available. Personal air conditioning would be great, I was too hot the entire flight

SFO
HKG
Excellent 8.3

The service from the Singapore Airlines is always impeccable. The food is delicious. The business class seat is spacious and wider than all the US airlines. There are plenty storage space in your seat space. The entertainment system has many choices and has a lot new release movies and shows.

Unfortunately, the ride on Boeing 777 is not as smooth as the Airbus'. The noise in the cabin is louder. The seat is comfortable but the bed is not. First, the flat bed is not transformed by a button and it needs a physical person to flip it over. The mat is thin and I can feel some hard edges while lying down. The noise from the engine transmits to the bed and it is hard to sleep even with the noise cancellation headphone.

LAX
NRT
Excellent 10.0

The seats are very comfortable. There was ample entertainment.

No complaints at all. They are very professional and I would chose them again.

SIN
LAX
Excellent 9.6

SQ did a great job again. I plan to fly them in the future.

My only criticism is that the flight attendants didn’t pass through the cabin with water during the 9 hour flight.

FRA
JFK
Excellent 9.6

That the A380 was only 70%full, resulting in me getting three seats to myself. I was able to stretch out and sleep for most of the flight. Food and service were top notch. Better value than Lufthansa or American, for the overall flight experience. You could fly cheaper, but not better, in economy.

Though we landed early at JFK, we had a one hour wait on the tarmac until one of the only two gates capable of receiving an A380 opened up.

Thu, Apr 12
SEA
KTM
25h 27m
Wed, May 2
KTM
SEA
28h 11m
Trip: 21 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 4
SEA
KTM
35h 00m
Wed, May 2
KTM
SEA
25h 30m
$1059
Trip: 59 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 10785 reviews
Overall
8.3
Boarding
8.3
Comfort
8.2
Crew
8.5
Entertainment
8.6
Food
8.1
DXB
DFW
Excellent 9.6

Service, atmosphere

1st food was same as it was from Karachi to Dubai

BKK
HKG
Excellent 10.0

It was comfy, the crew seemed genuinely happy, and the food was good. Never going to complain about smoked salmon.

I didn't like that my connecting flight was with another airline

DXB
CCU
Okay 4.3

Despite me telling the crew a number of times that he temperature was FAR too low, no change was made. Now I am not a first time flyer and I know flights can get cold. I had a sweatshirt, socks, shoes, two blankets wrapped and it was still cold to the point that I put the blanket over my head. When I looked around the flight almost every single person was completely wrapped in blankets and had hoods, sarees, and scarves wrapped around their heads. I had my 1 year old infant who already had a head cold that I feel was worsened by the cold dry air. I spent my first few days in Kolkata pretty sick. I know the cold air doesn’t cause the illness but it certainly worsened any stuffy nose I had into a full blown cold and chest congestion. I was VERY upset by the discomfort on this flight especially after having a wonderful flight with Emirates from New York to Dubai. I really felt like the crew did not care despite clear discomfort the passengers were feeling. It was incredible how visible the discomfort was yet nothing was done to fix the temperature. The freezing cold air kept blowing right on everyone theoughout the flight.

SYD
CHC
Good 7.3

One carryon and no personal item - inconvenient and irritating! Security staff disposed of manicure scissors that met printed guidelines. Checked baggage was damaged, will avoid Emirates because of this. Staff, comfort, and food were very good, but will still select other airlines

FLL
DXB
Good 7.3

The entertainment was comprehensive. I also liked the number of options for the complimentary beverages.

The economy seats are not as comfortable as advertised. The breakfast was good, but the chicken dinner was bland.

Tue, Aug 28
SEA
KTM
42h 20m
Thu, Sep 27
KTM
SEA
42h 39m
Trip: 31 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2330 reviews
Overall
8.8
Boarding
8.9
Comfort
8.6
Crew
9.0
Entertainment
8.7
Food
8.4
SFO
HKG
Excellent 8.3

The service from the Singapore Airlines is always impeccable. The food is delicious. The business class seat is spacious and wider than all the US airlines. There are plenty storage space in your seat space. The entertainment system has many choices and has a lot new release movies and shows.

Unfortunately, the ride on Boeing 777 is not as smooth as the Airbus'. The noise in the cabin is louder. The seat is comfortable but the bed is not. First, the flat bed is not transformed by a button and it needs a physical person to flip it over. The mat is thin and I can feel some hard edges while lying down. The noise from the engine transmits to the bed and it is hard to sleep even with the noise cancellation headphone.

LAX
NRT
Excellent 10.0

The seats are very comfortable. There was ample entertainment.

No complaints at all. They are very professional and I would chose them again.

SFO
SIN
Excellent 10.0

Seats in economic class are not too contraint in space, food was good and entertainment system quite nice with large si play screen and large movie selection

SFO
SIN
Excellent 8.0

Premium economy

FRA
JFK
Excellent 9.6

That the A380 was only 70%full, resulting in me getting three seats to myself. I was able to stretch out and sleep for most of the flight. Food and service were top notch. Better value than Lufthansa or American, for the overall flight experience. You could fly cheaper, but not better, in economy.

Though we landed early at JFK, we had a one hour wait on the tarmac until one of the only two gates capable of receiving an A380 opened up.

Sun, Mar 18
SEA
KTM
28h 00m
Tue, Mar 27
KTM
SEA
36h 10m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 18
SEA
KTM
32h 05m
Mon, Mar 26
KTM
SEA
29h 15m
$1059
Trip: 9 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 10785 reviews
Overall
8.3
Boarding
8.3
Comfort
8.2
Crew
8.5
Entertainment
8.6
Food
8.1
CAI
DXB
Okay 5.3

Decent leg room in economy; good entertainment system & food/drink

I was expecting to pay for only 10 kg excess baggage according to my own scale but was charged for 15 kg and the check-in staff was rude and unwilling to listen; in-flight staff were not polite, pushing past passengers without any word; such a disappointment as I expected much higher standard of service and courtesy. Nothing beats Singapore Airlines.

LAX
DXB
Mediocre 2.0

Nothing

Super delayed !! Delayed time is longer than flying time. What the heck !!

SYD
CHC
Good 7.3

One carryon and no personal item - inconvenient and irritating! Security staff disposed of manicure scissors that met printed guidelines. Checked baggage was damaged, will avoid Emirates because of this. Staff, comfort, and food were very good, but will still select other airlines

DXB
BCN
Excellent 10.0

Everything as usual

Some rude passengers

ATH
EWR
Excellent 8.6

Better food than out of Newark. Crew helpful as always.

Legroom is poor but unlike the Newark-Athens leg, I was able to get an aisle seat that allowed me to stretch a bit. Choice of English language movies is poor. Depending on the price I would still prefer the Delta non stop flight from US to Greece because of the movie choices and ease of use of remote control.

Tue, Mar 6
SEA
KTM
34h 45m
Tue, Apr 3
KTM
SEA
49h 02m
Trip: 28 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 20
SEA
KTM
35h 30m
Tue, Apr 3
KTM
SEA
29h 15m
$1059
Trip: 15 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 10785 reviews
Overall
8.3
Boarding
8.3
Comfort
8.2
Crew
8.5
Entertainment
8.6
Food
8.1
DXB
CCU
Okay 4.3

Despite me telling the crew a number of times that he temperature was FAR too low, no change was made. Now I am not a first time flyer and I know flights can get cold. I had a sweatshirt, socks, shoes, two blankets wrapped and it was still cold to the point that I put the blanket over my head. When I looked around the flight almost every single person was completely wrapped in blankets and had hoods, sarees, and scarves wrapped around their heads. I had my 1 year old infant who already had a head cold that I feel was worsened by the cold dry air. I spent my first few days in Kolkata pretty sick. I know the cold air doesn’t cause the illness but it certainly worsened any stuffy nose I had into a full blown cold and chest congestion. I was VERY upset by the discomfort on this flight especially after having a wonderful flight with Emirates from New York to Dubai. I really felt like the crew did not care despite clear discomfort the passengers were feeling. It was incredible how visible the discomfort was yet nothing was done to fix the temperature. The freezing cold air kept blowing right on everyone theoughout the flight.

FLL
DXB
Good 7.3

The entertainment was comprehensive. I also liked the number of options for the complimentary beverages.

The economy seats are not as comfortable as advertised. The breakfast was good, but the chicken dinner was bland.

IAD
DXB
Excellent 10.0

My flight left on time and from the moment I was greeted upon entering the A380 Airbus, I knew I was in for something very special. As prepared for departure, blankets and pillows were distributed amongst the passengers. Once in flight, dinner and in the morning, breakfast. And, throughout the night, the flight attendants attended to passenger requests for beverages and snacks. The plane was clean and, maybe I need to compliment my fellow passengers also, for the washrooms were clean and well maintained. We arrived on time and the trip seemed rather short with the entertainment of movies, news and inflight updates. Thanks again Emerates...you have brought back flying to it's original objective to give service and a safe means of travel. See you soon. Philip Dorn

DXB
DFW
Excellent 9.6

Service, atmosphere

1st food was same as it was from Karachi to Dubai

BKK
HKG
Excellent 10.0

It was comfy, the crew seemed genuinely happy, and the food was good. Never going to complain about smoked salmon.

I didn't like that my connecting flight was with another airline

Wed, Aug 29
SEA
KTM
48h 50m
Wed, Oct 3
KTM
SEA
33h 54m
Trip: 36 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2330 reviews
Overall
8.8
Boarding
8.9
Comfort
8.6
Crew
9.0
Entertainment
8.7
Food
8.4
LAX
ICN
Good 7.0

Loved the hot towel service

Entertainment could be better, however there were a few new and Oscar nominated movies available. Personal air conditioning would be great, I was too hot the entire flight

SIN
LAX
Excellent 9.6

SQ did a great job again. I plan to fly them in the future.

My only criticism is that the flight attendants didn’t pass through the cabin with water during the 9 hour flight.

FRA
JFK
Excellent 9.6

That the A380 was only 70%full, resulting in me getting three seats to myself. I was able to stretch out and sleep for most of the flight. Food and service were top notch. Better value than Lufthansa or American, for the overall flight experience. You could fly cheaper, but not better, in economy.

Though we landed early at JFK, we had a one hour wait on the tarmac until one of the only two gates capable of receiving an A380 opened up.

SIN
SFO
Excellent 8.0

The food is very good in economy. Large screen tv gor movies and games.

all was good, nothing bad

FRA
JFK
Excellent 10.0

wide seats. great service. on time.

food was not as good as one would expect.

Sat, Mar 10
SEA
KTM
44h 10m
Wed, May 9
KTM
SEA
47h 03m
Trip: 60 days
Overall 0.0 Poor
Based on 0 reviews
Show more results

Seattle/Tacoma Intl to Kathmandu Tribhuvan Flight Information

Flights Arrive in Kathmandu Tribhuvan
Flights Depart from Seattle/Tacoma Intl
Flight Price $618
Distance 6966 miles
Airlines Singapore Airlines, Emirates, China Eastern
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

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Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

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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.