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SEA - KTM

Find cheap flights from Seattle to Kathmandu from $674

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Kathmandu departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Tue 6/11
Tue 6/18

Search hundreds of travel sites at once for deals on flights to Kathmandu

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Kathmandu, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Kathmandu, as well as popular online travel agencies
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Kathmandu (SEA-KTM)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Kathmandu that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
9:45 am - 1:35 pmSEA-KTM
39h 05m1 stop
11:10 pm - 7:15 amKTM-SEA
21h 50m1 stop
$1,090Singapore Airlines
Find Deal
Tue, Oct 29 - Wed, Nov 20
4:30 pm - 8:40 amSEA-KTM
27h 25m1 stop
9:55 am - 12:30 pmKTM-SEA
39h 20m1 stop
$1,115Qatar Airways
Find Deal
Mon, Sep 23 - Mon, Sep 30
5:05 pm - 4:25 pmSEA-KTM
34h 35m1 stop
8:00 am - 11:50 amKTM-SEA
41h 35m1 stop
$1,116Qatar Airways
Find Deal
Tue, Oct 29 - Wed, Nov 20
6:00 am - 6:45 amSEA-KTM
36h 00m2 stops
8:00 am - 11:50 amKTM-SEA
41h 35m1 stop
$1,131Qatar Airways
Find Deal
Tue, Oct 29 - Wed, Nov 20
9:35 pm - 10:30 amSEA-KTM
48h 10m2 stops
8:00 am - 11:50 amKTM-SEA
41h 35m1 stop
$1,197Qatar Airways
Find Deal
Fri, Oct 18 - Fri, Nov 8
4:30 pm - 1:00 amSEA-KTM
19h 45m1 stop
9:55 am - 12:30 pmKTM-SEA
39h 20m1 stop
$1,225Qatar Airways
Find Deal
Wed, Oct 2 - Wed, Oct 9
9:35 pm - 10:30 amSEA-KTM
48h 10m2 stops
8:00 am - 11:50 amKTM-SEA
41h 35m1 stop
$1,244Qatar Airways
Find Deal
Fri, Oct 18 - Fri, Nov 8
8:00 am - 10:30 amSEA-KTM
37h 45m2 stops
6:00 pm - 9:00 pmKTM-SEA
39h 45m2 stops
$1,249Qatar Airways
Find Deal
Mon, Sep 23 - Mon, Sep 30
9:45 am - 1:35 pmSEA-KTM
39h 05m1 stop
11:10 pm - 9:01 amKTM-SEA
47h 36m3 stops
$1,338Singapore Airlines
Find Deal
Tue, Oct 29 - Wed, Nov 20
8:00 pm - 11:05 amSEA-KTM
25h 20m1 stop
12:35 pm - 5:05 pmKTM-SEA
42h 15m1 stop
$1,391Turkish Airlines
Find Deal
Thu, Nov 7 - Sat, Dec 7

Flights from Seattle to Kathmandu - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Kathmandu to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Kathmandu?

The average price of all flights from Seattle to Kathmandu clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Seattle to Kathmandu, look for departures on Mondays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Kathmandu, Tuesday is the cheapest day to fly and Thursday is the most expensive.

What is the cheapest month to fly from Seattle to Kathmandu?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Kathmandu, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Kathmandu is September, where tickets cost $1,237 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $1,982 and $1,809 respectively.

How far in advance should I book a flight from Seattle to Kathmandu?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Kathmandu, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Kathmandu, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 45 days before departure.

Which airlines provide the cheapest flights from Seattle to Kathmandu?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Seattle to Kathmandu were found on Singapore Airlines ($1,090) and Qatar Airways ($1,115). Qatar Airways proposed the cheapest one-way flight at $674.

Good to know

Low season

June

High season

November

Cheapest flight

$674
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly with an average 3% increase in price.
Flight from Seattle to Kathmandu

When to book flights from Seattle to Kathmandu

Are your dates flexible? Find out the best times to travel from Seattle to Kathmandu based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Kathmandu

  • Where can you get information at SEA?

    If you have any queries while at the airport, you can approach airport volunteers who are easily identifiable with their blue jackets. They are friendly and will offer whatever information you need concerning airport services. There are also customer services representatives who wear red vests and carry an iPad to help passengers with directions around the airport.

  • Is SEA baby-friendly?

    There are nursing rooms in the airport to provide mothers with the quiet and privacy needed to take care of their infants. The rooms are equipped with changing tables, sinks, rocking chairs, and power outlets. One is located inside the Kid's Play Area, at S Gate mezzanine level, Gates A9, C10, N2, D19, D23, and the main terminal at the train station. If you are a member of the military or related to one, you can use the nursing room inside the USO lounge located landside, mezzanine level, on the 2nd floor.

  • Are there lounges at KTM?

    If you wish to relax and unwind a little before leaving the airport, you can take advantage of the airport’s onsite lounges. The executive lounge is located on the 2nd floor of the international terminal, landside. Passengers traveling first or business class can access the Thai Airways Royal silk lounge at the international terminal, landside.

  • Can you find luggage trolleys at KTM?

    Perhaps you are heavy-laden with bags and need a hand. If so, you would be happy to know that there are trolleys available free of charge at the airport. You will find them on the upper and lower level of arrivals and in the baggage claim area.

  • What is the cheapest flight from Seattle to Kathmandu?

    In the last 3 days, the lowest price for a flight from Seattle to Kathmandu was $674 for a one-way ticket and $1,090 for a round-trip.

  • Do I need a passport to fly between Seattle and Kathmandu?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Seattle and on arrival in Kathmandu.

  • Which aircraft models fly most regularly from Seattle to Kathmandu?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Kathmandu?

    oneworld, and Star Alliance are the airline alliances operating flights between Seattle and Kathmandu, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Kathmandu from Seattle?

    Doha is the most popular layover city among KAYAK users traveling from Seattle to Kathmandu.

  • Which is the best airline for flights from Seattle to Kathmandu, Singapore Airlines or Qatar Airways?

    The two airlines most popular with KAYAK users for flights from Seattle to Kathmandu are Singapore Airlines and Qatar Airways. With an average price for the route of $1,412 and an overall rating of 8.2, Singapore Airlines is the most popular choice. Qatar Airways is also a great choice for the route, with an average price of $1,517 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Seattle to Kathmandu?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Kathmandu.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Kathmandu?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kathmandu from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Kathmandu?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Kathmandu with an airline and back to Seattle with another airline. Booking your flights between Seattle and KTM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Kathmandu?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kathmandu from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from SEA to Kathmandu

  • On the day your flight from Seattle Airport (SEA) to Kathmandu Tribhuvan Airport (KTM) is scheduled, it is advisable to get to the airport at least 2 hours before departure. SEA requires all passengers to go through several security checkpoints to uphold security in the airport, which may be time-consuming. Arriving early at the airport reduces the risk of missing your flight.
  • If you still have time to kill before your flight, you could relax with a massage at SEA. There is a massage bar located airside in the N gates, and it is operational between 6 am and 7 pm during the weekdays and between 7 am and 8 pm during the weekends. A foot or chair massage will make you feel very relaxed before you board the flight to KTM.
  • Suppose you want to get to SEA from nearby towns using public transport. If that is the case, you have the option of using a bus, a taxi, or a train. King County Metro buses drop passengers on the street close to the airport next to the Sea-Tac Airport LINK Light rail station. Alternatively, you can use the LINK Light rail system to get to the airport, whose station is located on the 4th floor of the parking garage.
  • When you get to KTM, chances are that you will be exhausted because of the journey and the jetlag that comes with it. While there are no onsite hotels in the airport, there are several within walking distance. They include Hotel Marinha, Summit Residency, and Kathmandu Airport hotel.
  • If you wish to convert your currency from USD to rupees once you get to KTM, you can do so at the currency exchange counters in the Arrivals lounge of the full-service banking branch at the Departures lounge.
See more tips

Top 5 airlines serving from Seattle to Kathmandu

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Kathmandu. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Kathmandu? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.5
Korean AirOverall score based on 1179 reviews
8.2Food
8.8Crew
8.2Entertainment
8.3Comfort
8.6Boarding
Airline reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

10.0 ExcellentAnonymous, Apr 2024IAD - ICN
Read more about Korean Air reviews

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

Crew was ok, but some passengers were a bit rude. Again, all outlets were not working, only the really slow charging usb plug on the entertainment system. Entertainment system was also bugged, some features just crash, the touch screen wasn't working and when trying to watch a movie the onscreen display kept flashing off and on making it very difficult to watch.

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

It was ok. Not good and not a bad experience

not too bad but not too great either. Service on all airlines declined ever since covid. Your Delta Stewardess are not that friendly at all. :-(

You did not put me on a Korean Air flight! so I do not have nothing to say

My flight was diverted to Atlanta and I was not given enough time. I paid my travel on April 23, 2023. It was originally Delta from Norfolk to NY, then Korean Air from NY all the way Philippines which is my final stop. Instead from Atlanta to Korea I flew Delta which is okay. Then Korea to Philippines, I flew Asiana Airlines. What I did not like, Ieagle did not sent me an email that my flight was change and so when I went to check in Wednesday the 10th, at 4:30 a.m they told me my flight was delayed at 6;00 p.m and diverted in Atlanta and I am flying Asiana from Korea to Philippines. I do not appreciate that Kayak or Ieagle chenge our flights 5 times and then last minute change again during my day of flight. I hope that you will not make any changes of my flight o Feb 15th because it has to be the same flight with my husband. That is the reason why we made the arrangements early on.

Wonderful cabin crew!!!!! Food was poor, in flight entertainment was just ok. They need to serve more water on a 15 hour flight--we were dehydrated and kept asking for water.

Going through security a third time to get on the next flight was again utterly ridiculous and unnecessary. We were in a International secure area once again and as far as I'm concerned should not have been put through the gears for absolutely no reason. The United States can get all the information they need from the travel itinerary, there was no need to be forced out of a secure area to personally interview everyone on a connecting flight to find out their US immigration status.

All in all the flight was good. Love the fact that for airline food it was piping hot

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

Awesome as always. I wish though the cabin for premium was upgraded.... Same old sane old :(

It was a great flight Food was great Crew was spectacular

In general good, but the machine seems to be long in operation and some functions were restricted as e. g. Adjusting of seats.

People were so nice! Economy seats were small and cramped feeling for me. I’m slender and 6 feet tall

The singapore airline now compared before covid, I like the service before covid. SQ was the best of all airlines but now I am going to look for different airline if I am travelling in asia.

Flying with Singapore airlines is always excelllent - the crew are lovely and the food too is great. It’s my number 1 airline

They close their counter so early. I had internet issues so I couldn’t check In online . I would have made the flight but their counter was closed 5 minutes before we arrived. No way of contacting them even though I had the confirmation number and tried to check in the night before on someone else’s phone. I tried calling their customer service with no pick up. Horrible experience, I’m very unhappy with them. I hope to never fly with them ever again. It costed me almost $900.

Due to the delay of my first flight, my connecting flight with JetBlue was canceled by Singapore Airlines, but the JetBlue crew was very accommodating and rebooked a seat for me. The crew was very nice and had good attitude.

we bought trip insurance from you and could not use it. 'underrated' only return 50 % of trip cost. my doctor told me i have stage 4 cancer and that I might not live till the end of the month..

Flight got canceled without any prior information and it caused lot of trouble

No entertainment u less you pay. Wish there were some free movies

Staff were friendly, and provided great service. The food was plentiful and delicious. Food could have been hotter.

I was traveling business purposes and I only had one carry on and a personal computer back pack . My carry on was 8.5 kg little more than allowable. At jfk airport check in they did not let me carry it . I was little disappointed.

More leg room and comfortable seats at least for long flights

The entertainment selections are amazing. But the live TV is sometimes spotty. If you’re going to have it, then have it. If you can’t make it consistent, then, perhaps it’s better not to have it. The crew are always cordial when approached, but they seem to do the minimum and sit around, talking to each other in the back of the plane during the flight. I realize that delays are not always predictable, but I missed my flight in Dubai because we left 90 minutes late from Washington. I will say that Emirates took very good care of me in Dubai. But I would rather not be delayed.

Probably the best flight I’ve ever been on. Emirates first class is leagues beyond British airways and Lufthansa’s.

Great flight. Comfortable seats, courteous service, and excellent selection for entertainment.

Serving food took so long . Almost time close to lend. Plus during landing air pressure in cabin cuss ear blocked took long time to unblock.

Operated by American Airlines. Very chaotic and the crew was bit rough responding any enquiries. Restricted leg space.. Qatar would have been better

Qatar airways from Doha to guangzhau was excellent big bird Boeing 777 more room and smoothly flight, I Love it

It was good no problems made it on time for the next flight overseas!

The made us waiting and held our passports and boarding pass making us miss our flights

Not impressed. Only allowed one carry on on such a long flight.

The flight was good but my neighbor had the vent open full power for the whole flight and because the air was blowing from the side instead of from the top and I got very cold and ended up with a sore throat.

Bad experience with the delay n long wait time for connecting flight after missing the connection flight from Doha.

Wore experience due to delay and took me 3 days to reach my destination.

All over with Qatar airlines my experience was really bad due to delays and then putting me on different airlines and after 8 hours of wait I had to listen to their is no plane to fly for another 24 hours. Wore experience ever.

Excellent will be flying again in May with Qatar. to Botswana.

Excellent service and comfort from the moment you check in. Flight crew is hyper focused on making passengers comfortable and at ease. It’s like a flying hotel!

Only chicken as a meat dish through out the flight

Nothing really was great as such. Seen other no name airlines perform better.

Quality of service on board was very inconsistent. FA service primarily seemed robotic and they barely engaged with passengers

I’m unclear why I had to pay extra for assigned seats as Turkish airlines did not honor the seating. We were placed across the aisle from each other on TK 34, and were seated behind one another on TK 694. Because my name was misspelled on e-ticket (Klawiter, instead of Klawitter) I could not log onto website to get the connection gate number in Istanbul. The monitors in the airport were a jumbled mess 1/2 Arabic and 1/2 English.

On line check in needs a lot of improvement. I tried and gave up.

Food not good, flight attendants not the best, not accommodating very ruff

the female flight attendant was racist towards me. I could tell she treated the two other passengers next to me with more softness.

Oh my god! For an13 hour flight they serve you food just one time. Also don’t be thirsty they give you a little small cup of soda to drink. They seem like their goal is to feed you one so they don’t have to be bothered with you. It quite surprise for such a long flight there are several times to eat at least three and the food was well lackluster. The food and lack of offering drinks which were always hot no ice provided.

We were traveling first class. Checkin counter lady and her manager, both were in bad mood and did not treat us well about checking in the handbag. The gate agent took care of it right away. I travel Turkish twice a year in first class. No one has ever refused to check in the hand bag. Not sure, why this agent and her manager refused. Everything else was excellent.

Book cheap flights from Seattle to Kathmandu

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Kathmandu found on KAYAK in the last 72 hours.
9/23Mon
1 stopQatar Airways
27h 25mSEA-KTM
$674
9/23Mon
3 stops
27h 50mSEA-KTM
$697
9/22Sun
2 stops
27h 35mSEA-KTM
$702
9/23Mon
2 stopsQatar Airways
38h 45mSEA-KTM
$705
10/10Thu
2 stopsQatar Airways
48h 55mSEA-KTM
$739
8/3Sat
2 stops
36h 35mSEA-KTM
$753
8/3Sat
1 stop
27h 45mSEA-KTM
$842
9/22Sun
3 stops
33h 30mSEA-KTM
$843
8/3Sat
3 stops
57h 01mSEA-KTM
$932
10/10Thu
1 stopSingapore Airlines
22h 45mSEA-KTM
$1,010

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Seattle - Kathmandu Flights

Departure:

Seattle (undefined)United States

Destination:

Kathmandu (KTM)Nepal

Return flight deals:

Kathmandu - Seattle

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