$576+ Cheap flights from Seattle (SEA) to Kathmandu (KTM)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KTM
Dec 9 — Dec 161
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Kathmandu
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Cheapest flights from Seattle to KathmanduExplore the most affordable flight options available from Seattle to Kathmandu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.
Explore the most affordable flight options available from Seattle to Kathmandu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 am -
1 stop71h 15m
Mon 2/1510:55 pm -
1 stop45h 55m
Deal found 11/6![Singapore Airlines logo]()
$1,172
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 am -
1 stop71h 15m
Sun 2/1410:55 pm -
1 stop69h 55m
Deal found 11/6![Singapore Airlines logo]()
$1,173
This Justfly.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:50 pm -
1 stop34h 40m
Sat 11/219:35 am -
1 stop40h 25m
Deal found 11/8![Qatar Airways logo]()
$1,334
This Qatar Airways deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:50 pm -
1 stop33h 00m
Fri 11/209:35 am -
1 stop40h 25m
Deal found 11/8![Qatar Airways logo]()
$1,377
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:07 am -
2 stops38h 43m
Mon 2/157:00 pm -
2 stops35h 41m
Deal found 11/6![Qatar Airways logo]()
$1,430
This Justfly.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:07 am -
2 stops41h 53m
Fri 11/203:50 pm -
1 stop34h 10m
Deal found 11/4![Multiple Airlines logo]()
$1,442
This FlightHub deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:03 am -
2 stops40h 47m
Sun 2/145:30 pm -
1 stop31h 55m
Deal found 11/6![Qatar Airways logo]()
$1,460
This FlightHub deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:03 am -
2 stops40h 47m
Sat 11/219:35 am -
1 stop40h 25m
Deal found 11/8![Multiple Airlines logo]()
$1,485
This FlightHub deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:00 pm -
2 stops51h 50m
Sat 11/219:35 am -
1 stop40h 25m
Deal found 11/8![Multiple Airlines logo]()
$1,499
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 am -
1 stop47h 30m
Mon 2/1510:55 pm -
2 stops31h 46m
Deal found 11/6![Multiple Airlines logo]()
$1,510
This Qatar Airways deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:07 am -
2 stops41h 53m
Fri 11/209:35 am -
1 stop40h 25m
Deal found 11/8![Qatar Airways logo]()
$1,513
This FlightHub deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:50 pm -
1 stop34h 40m
Sun 12/135:30 pm -
1 stop31h 55m
Deal found 11/4![Qatar Airways logo]()
$1,534
Best flights from Seattle to KathmanduDiscover carefully curated flight deals from Seattle to Kathmandu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
Discover carefully curated flight deals from Seattle to Kathmandu that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
This FlightHub deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/114:25 pm -
1 stop35h 35m
Thu 4/2210:05 am -
1 stop39h 35m
Deal found 11/7![Qatar Airways logo]()
$1,153
This Justfly.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/119:40 pm -
2 stops46h 40m
Thu 4/227:35 am -
2 stops27h 09m
Deal found 11/5![Multiple Airlines logo]()
$1,157
This Qatar Airways deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/284:25 pm -
1 stop35h 35m
Sun 4/410:05 am -
2 stops44h 42m
Deal found 11/8![Qatar Airways logo]()
$1,305
This Qatar Airways deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/54:25 pm -
1 stop35h 35m
Sun 5/96:00 pm -
1 stop31h 10m
Deal found 11/4![Qatar Airways logo]()
$1,426
This FlightHub deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:50 pm -
1 stop34h 40m
Sun 12/135:30 pm -
1 stop31h 55m
Deal found 11/4![Qatar Airways logo]()
$1,534
Last-minute flights from Seattle to KathmanduDiscover last-minute flight deals from Seattle to Kathmandu. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Kathmandu. Data last updated November 9, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 am -
1 stop71h 15m
Mon 2/1510:55 pm -
1 stop45h 55m
Deal found 11/6![Singapore Airlines logo]()
$1,172
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 am -
1 stop71h 15m
Sun 2/1410:55 pm -
1 stop69h 55m
Deal found 11/6![Singapore Airlines logo]()
$1,173
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:07 am -
2 stops38h 43m
Mon 2/157:00 pm -
2 stops35h 41m
Deal found 11/6![Qatar Airways logo]()
$1,430
This FlightHub deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:03 am -
2 stops40h 47m
Sun 2/145:30 pm -
1 stop31h 55m
Deal found 11/6![Qatar Airways logo]()
$1,460
This oojo deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 am -
1 stop47h 30m
Mon 2/1510:55 pm -
2 stops31h 46m
Deal found 11/6![Multiple Airlines logo]()
$1,510
This Justfly.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:50 pm -
1 stop34h 40m
Sat 11/219:35 am -
1 stop40h 25m
Deal found 11/8![Qatar Airways logo]()
$1,334
This Qatar Airways deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:50 pm -
1 stop33h 00m
Fri 11/209:35 am -
1 stop40h 25m
Deal found 11/8![Qatar Airways logo]()
$1,377
This FlightHub deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/119:00 pm -
2 stops51h 50m
Sat 11/219:35 am -
1 stop40h 25m
Deal found 11/8![Multiple Airlines logo]()
$1,499
This Justfly.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:07 am -
2 stops41h 53m
Fri 11/203:50 pm -
1 stop34h 10m
Deal found 11/4![Multiple Airlines logo]()
$1,442
This FlightHub deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:03 am -
2 stops40h 47m
Sat 11/219:35 am -
1 stop40h 25m
Deal found 11/8![Multiple Airlines logo]()
$1,485
This Qatar Airways deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:07 am -
2 stops41h 53m
Fri 11/209:35 am -
1 stop40h 25m
Deal found 11/8![Qatar Airways logo]()
$1,513
This FlightHub deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/223:50 pm -
1 stop34h 40m
Sun 12/135:30 pm -
1 stop31h 55m
Deal found 11/4![Qatar Airways logo]()
$1,534
One-way flights from Seattle to KathmanduSearch for one-way flight options from Seattle to Kathmandu. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
Search for one-way flight options from Seattle to Kathmandu. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/68:40 am -
2 stops39h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$576
This FlightHub deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/269:40 pm -
3 stops36h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$579
This Kiwi.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/78:40 am -
3 stops38h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$587
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/255:40 pm -
2 stops30h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$589
This FlightHub deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/259:40 pm -
3 stops44h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Multiple Airlines logo]()
$594
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/235:40 pm -
2 stops30h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$604
This Kiwi.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/208:40 am -
2 stops46h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Multiple Airlines logo]()
$611
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2410:15 am -
3 stops40h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$626
Find flight deals from Seattle to Kathmandu
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Kathmandu (KTM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,066 (oojo) |
One-way from | $576 (Kiwi.com) |
Popular in | July |
Cheapest in | September |
Average price | $1,369 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Kathmandu that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 9, 2026.
Use the filters below to find and compare flights from Seattle to Kathmandu that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Mon 4/26
9:40 pm-10:55 pm
3 stops36h 30m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$579
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Tue 4/27
7:00 am-9:05 am
3 stops37h 20m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$579
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Fri 4/23
5:40 pm-1:05 pm
2 stops30h 40m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$604
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 2/20
8:40 am-9:45 am
3 stops35h 20m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$629
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 2/6
8:40 am-9:55 pm
1 stop23h 30m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$648
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Thu 1/7
10:25 am-9:50 am
2 stops33h 40m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$658
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 2/6
8:40 am-11:50 am
3 stops37h 25m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$677
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 12/5
10:20 am-9:50 am
2 stops33h 45m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$712
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Mon 12/7
10:25 am-1:05 pm
3 stops36h 55m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$756
Quickest round-trip
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Thu 4/29
10:15 am-9:30 pm
1 stop22h 30m
Kathmandu Tribhuvan
Wed 12/31
12:00 am-10:30 am
Nonstop0h 00m
$821
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from Seattle to Kathmandu
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Kathmandu in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Kathmandu flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Kathmandu flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Kathmandu flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Kathmandu flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Kathmandu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Kathmandu
Have a flexible travel schedule? Discover the best time to fly to Kathmandu from Seattle with our price prediction graph.
SEA-KTM
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Kathmandu
Prices
More
How far ahead should I book a flight from Seattle to Kathmandu?
Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Kathmandu. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Kathmandu?
Currently, September is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of $1,006). Flying from Seattle to Kathmandu in July is currently the most expensive (average of $1,521). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Kathmandu?
Airfare is below average for this route at the moment.
Seattle to Kathmandu flights typically cost between $1,255 and $1,592 in March.The cheapest round-trip price found within the last 5 days was $1,066 on Singapore Airlines (Mar 5-Mar 22).
What’s the top layover airport for flights from Seattle to Kathmandu?
Share of 1-stop round-trip flights from Seattle to Kathmandu chosen by Cheapflights users in the past 12 months, using the same layover each way.
Doha (DOH) – chosen by Cheapflights users on 83% of 1-stop itineraries from Seattle to Kathmandu on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Kathmandu?
Average round-trip fare for 1-stop flights from Seattle to Kathmandu, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $967.
What’s the fastest layover option from Seattle to Kathmandu?
Shortest average travel time for 1-stop one-way flights from Seattle to Kathmandu, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Istanbul (IST) have the shortest average one-way travel time for 1-stop routes: 26h 25m.
Which airport typically offers the quickest layover for flights from Seattle to Kathmandu?
Average layover duration for 1-stop one-way flights from Seattle to Kathmandu, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Doha (DOH) offer the fastest connection on this route, with an average layover time of 10h 07m.
Reviews of airlines servicing Kathmandu
Get insights into the airlines that provide service to Kathmandu. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kathmandu. Reviews last updated November 9, 2026.
See what other customers who have flown with Singapore Airlines,Cathay Pacific, andQatar Airways from Seattle to Kathmandu have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.8
Crew
8.6
Boarding
8.3
Entertainment
8.1
Overall
8.2
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentJudith,Sep 2026
SFO - SIN
Food
7.8
Crew
8.6
Boarding
8.3
Entertainment
8.1
Overall
8.2
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentJudith,Sep 2026
SFO - SIN
Food
7.8
Crew
8.6
Boarding
8.3
Entertainment
8.1
Overall
8.2
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentJudith,Sep 2026
SFO - SIN
Food
7.8
Crew
8.6
Boarding
8.3
Entertainment
8.1
Overall
8.2
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentJudith,Sep 2026
SFO - SIN
Food
7.8
Crew
8.6
Boarding
8.3
Entertainment
8.1
Overall
8.2
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentJudith,Sep 2026
SFO - SIN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Kathmandu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Kathmandu
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Top 4 airlines flying from Seattle to Kathmandu
Discover the top 4 airlines that operate flights from Seattle to Kathmandu. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$812 | Average$1,195 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$903 | Average$1,343 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$966 | Average$1,253 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$1,003 | Average$1,412 | FlexibilityNo cancel fee | On-time77% |