SEA - KTM

C$ 765 Find Cheap Flights from Seattle to Kathmandu – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 1,596
Typical prices: C$ 1,490-C$ 2,132
Qatar Airways
Wed 17/1Mon 5/2
SEA - KTM • 1 stop
Cheapest one-way flights
C$ 765
Typical prices: C$ 822-C$ 1,417
Multiple Airlines
Fri 26/10
SEA - KTM • 3 stops
Direct flights
There are currently no direct flights between Seattle and Kathmandu. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 26 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg C$ 1,716 (round-trip)
Shortest trip • 22h 29m (one-way)
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Insights
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We hope you enjoy your trip to Kathmandu!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Kathmandu (SEA-KTM)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Kathmandu

Sun, 17 Jan - Fri, 5 Feb
Qatar Airways Logo
3:50 p.m. - 5:30 p.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
35h 55m1 stop Doha Hamad Intl
Qatar Airways Logo
5:40 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 45m1 stop Doha Hamad Intl
C$ 1,596Qatar Airways
Thu, 21 Jan - Wed, 3 Feb
Qatar Airways Logo
10:00 a.m. - 5:30 p.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
41h 45m2 stops San Francisco Doha Hamad Intl
Qatar Airways Logo
6:45 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 40m1 stop Doha Hamad Intl
C$ 1,625Qatar Airways
Tue, 19 Jan - Mon, 1 Feb
Qatar Airways Logo
3:50 p.m. - 8:20 a.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
26h 45m1 stop Doha Hamad Intl
Qatar Airways Logo
5:40 p.m. - 6:53 p.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
38h 58m2 stops Doha Hamad Intl San Francisco
C$ 1,632Qatar Airways
Sun, 17 Jan - Mon, 1 Feb
Qatar Airways Logo
3:50 p.m. - 5:30 p.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
35h 55m1 stop Doha Hamad Intl
Qatar Airways Logo
6:45 p.m. - 6:53 p.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
37h 53m2 stops Doha Hamad Intl San Francisco
C$ 1,636Qatar Airways
Sun, 17 Jan - Thu, 4 Feb
Qatar Airways Logo
8:44 p.m. - 5:30 p.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
55h 01m2 stops San Francisco Doha Hamad Intl
Qatar Airways Logo
5:40 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 45m1 stop Doha Hamad Intl
C$ 1,642Qatar Airways
Sat, 16 Jan - Thu, 4 Feb
Qatar Airways Logo
3:50 p.m. - 8:20 a.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
26h 45m1 stop Doha Hamad Intl
Qatar Airways Logo
5:40 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 45m1 stop Doha Hamad Intl
C$ 1,649Qatar Airways
Fri, 22 Jan - Tue, 2 Feb
Qatar Airways Logo
3:50 p.m. - 4:25 p.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
34h 50m1 stop Doha Hamad Intl
Qatar Airways Logo
6:45 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 40m1 stop Doha Hamad Intl
C$ 1,652Qatar Airways
Tue, 19 Jan - Sat, 6 Feb
Qatar Airways Logo
3:50 p.m. - 8:20 a.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
26h 45m1 stop Doha Hamad Intl
Qatar Airways Logo
5:40 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 45m1 stop Doha Hamad Intl
C$ 1,656Qatar Airways
Sun, 17 Jan - Sat, 6 Feb
Qatar Airways Logo
3:50 p.m. - 4:25 p.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
34h 50m1 stop Doha Hamad Intl
Qatar Airways Logo
5:40 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 45m1 stop Doha Hamad Intl
C$ 1,660Qatar Airways
Sat, 16 Jan - Mon, 1 Feb
Qatar Airways Logo
10:00 a.m. - 8:20 a.m.SEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
32h 35m2 stops San Francisco Doha Hamad Intl
Qatar Airways Logo
6:45 p.m. - 11:40 a.m.KTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 40m1 stop Doha Hamad Intl
C$ 1,677Qatar Airways
Booking Insights

Price, demand, and travel trends for Seattle to Kathmandu flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Seattle to Kathmandu with more confidence.

How much is a round-trip flight from Seattle to Kathmandu?

Round-trip flights from Seattle to Kathmandu start at C$ 1,596. Prices are typical for this route right now, with typical round-trip fares ranging from C$ 1,490 to C$ 2,132. The lowest price found in the past 5 days was C$ 1,596 on Qatar Airways.

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

Tuesday is the cheapest day of the week to fly from Seattle to Kathmandu and is 17% cheaper than the average day. Sunday is the most expensive day with flight prices 7% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • February is the cheapest month to fly from Seattle to Kathmandu at C$ 1,454 round-trip.
  • December (C$ 2,150) and July (C$ 2,119) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 47% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Seattle to Kathmandu the cheapest?

Flights from Seattle to Kathmandu are cheapest 26 weeks before departure. Booking in this window typically costs about 44% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Seattle to Kathmandu flights

Low season

January

Cheapest flight

C$ 765
Best time to beat the crowds (6% less expensive on average)
Flights 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

Your Seattle to Kathmandu flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • 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.

  • Which airports can I use when flying from Seattle to Kathmandu?

    Flights from Seattle to Kathmandu usually depart from Seattle/Tacoma Intl (SEA) and arrive at Kathmandu Tribhuvan (KTM).

  • Which cabin classes can I book on flights from Seattle to Kathmandu?

    Only Economy Class is available on flights from Seattle to Kathmandu.

  • Which airports do connecting flights from Seattle to Kathmandu pass through?

    One-stop flights from Seattle to Kathmandu most commonly connect through:

    • Singapore Changi (SIN) – 36% of one-stop connections
    • Doha Hamad Intl (DOH) – 33% of one-stop connections
    • Istanbul (IST) – 14% of one-stop connections
    • Hong Kong Intl (HKG) – 12% of one-stop connections

    Singapore Changi (SIN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to Kathmandu?

    Yes. Being flexible with your travel dates can save you up to 23% on the Seattle to Kathmandu route. Tuesday is the cheapest departure day at C$ 1,479 round-trip on average, while Sunday is the most expensive at C$ 1,914, a difference of C$ 435. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How expensive are last-minute Seattle to Kathmandu flights?

    Last-minute fares on this route – booked within 2 weeks of departure – run 37% above the route average of C$ 1,773. Book 26 weeks before departure for the lowest fares.

  • How long does a flight from Seattle to Kathmandu take?

    A direct flight from Seattle to Kathmandu takes 0h 00m, covering 18,031 km.

  • Do I need a passport to fly from Seattle to Kathmandu?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Seattle to Kathmandu looking right now?

    One-way fares from Seattle to Kathmandu are currently in line with typical prices for this route. Average one-way fares are about C$ 1,146.

  • How much time can I save by choosing a different layover airport when travelling from Seattle to Kathmandu?

    Flying via Hong Kong Intl (HKG) gives the shortest average 1-stop total travel time at 22h 29m, compared with 24h 15m via Singapore Changi (SIN) and 28h 46m via Istanbul (IST).

  • What is the time difference between Seattle and Kathmandu?

    Kathmandu is 12 hours ahead of Seattle (Nepal Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • How much should I expect to pay for a Seattle to Kathmandu flight?

    Round-trip flights from Seattle to Kathmandu range from C$ 1,490 to C$ 2,132, with an average of C$ 1,773 over the past 12 months. Anything below C$ 1,490 counts as a good deal.

Your guide to booking Seattle to Kathmandu flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure instead of Sunday. On this route, Tuesday flights average C$ 1,479 – about C$ 435 less than Sunday (23% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 26 weeks before you fly. On this route, that window historically saves about 44% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Kathmandu trip for February. Fares historically average C$ 1,454 round-trip in that month – typically C$ 696 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Kathmandu Tribhuvan Airport.
    - The Dwarika's
  • 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.

More options for your flight from Seattle to Kathmandu

Complete your trip to Kathmandu with a hotel stay or car rental