$532+ Cheap flights from Seattle (SEA) to Kathmandu (KTM)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KTM
Sep 11 — Sep 181
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 August 12, 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 August 12, 2026.
This Justfly.com deal was found by Cheapflights users on 8/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:15 am -
1 stop22h 30m
Fri 10/1611:10 pm -
1 stop22h 20m
Deal found 8/7![Singapore Airlines logo]()
$912
This oojo deal was found by Cheapflights users on 8/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:15 am -
1 stop22h 30m
Fri 11/610:55 pm -
1 stop22h 00m
Deal found 8/7![Singapore Airlines logo]()
$982
This Justfly.com deal was found by Cheapflights users on 8/10. 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.
Fri 12/258:45 am -
1 stop23h 20m
Tue 1/2610:55 pm -
1 stop22h 00m
Deal found 8/10![Singapore Airlines logo]()
$1,066
This flugladen.de deal was found by Cheapflights users on 8/11. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:25 pm -
1 stop27h 40m
Thu 9/176:00 pm -
1 stop31h 30m
Deal found 8/11![Qatar Airways logo]()
$1,073
This Justfly.com deal was found by Cheapflights users on 8/10. 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 9/104:25 pm -
1 stop27h 40m
Thu 9/246:45 pm -
1 stop30h 45m
Deal found 8/10![Qatar Airways logo]()
$1,074
This FlightHub deal was found by Cheapflights users on 8/6. 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.
Fri 9/1810:15 am -
1 stop22h 30m
Fri 10/211:10 pm -
1 stop46h 20m
Deal found 8/6![Singapore Airlines logo]()
$1,075
This FlightHub deal was found by Cheapflights users on 8/6. 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.
Mon 9/214:25 pm -
1 stop35h 35m
Thu 11/55:40 pm -
1 stop31h 45m
Deal found 8/6![Qatar Airways logo]()
$1,079
This FlightHub deal was found by Cheapflights users on 8/11. 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.
Tue 9/224:25 pm -
1 stop27h 40m
Fri 10/166:00 pm -
1 stop31h 10m
Deal found 8/11![Qatar Airways logo]()
$1,080
This Justfly.com deal was found by Cheapflights users on 8/11. 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 10/44:25 pm -
1 stop36h 20m
Mon 10/196:00 pm -
1 stop31h 10m
Deal found 8/11![Qatar Airways logo]()
$1,082
This Indian Eagle deal was found by Cheapflights users on 8/10. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:25 pm -
1 stop27h 40m
Tue 9/153:30 pm -
1 stop34h 00m
Deal found 8/10![Qatar Airways logo]()
$1,085
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 August 12, 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 August 12, 2026.
This Qatar Airways deal was found by Cheapflights users on 8/7. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:56 pm -
2 stops58h 34m
Thu 10/156:00 pm -
1 stop31h 10m
Deal found 8/7![Qatar Airways logo]()
$1,298
This Singapore Airlines deal was found by Cheapflights users on 8/10. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/162:30 pm -
2 stops41h 35m
Sun 1/3110:55 pm -
3 stops35h 21m
Deal found 8/10![Multiple Airlines logo]()
$1,439
This Qatar Airways deal was found by Cheapflights users on 8/7. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:35 pm -
2 stops30h 25m
Thu 10/156:00 pm -
1 stop31h 10m
Deal found 8/7![Qatar Airways logo]()
$1,312
This Qatar Airways deal was found by Cheapflights users on 8/6. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/54:25 pm -
1 stop33h 05m
Thu 11/129:35 am -
2 stops49h 09m
Deal found 8/6![Qatar Airways logo]()
$1,460
This Qatar Airways deal was found by Cheapflights users on 8/6. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:25 pm -
1 stop36h 20m
Thu 11/1211:05 am -
2 stops47h 39m
Deal found 8/6![Qatar Airways logo]()
$1,460
This Qatar Airways deal was found by Cheapflights users on 8/7. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:25 pm -
1 stop33h 05m
Sat 11/285:40 pm -
1 stop31h 45m
Deal found 8/7![Qatar Airways logo]()
$1,504
This Qatar Airways deal was found by Cheapflights users on 8/6. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:39 am -
2 stops45h 21m
Thu 11/129:35 am -
2 stops49h 09m
Deal found 8/6![Qatar Airways logo]()
$1,521
This Qatar Airways deal was found by Cheapflights users on 8/9. 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.
Sat 8/224:25 pm -
1 stop27h 40m
Mon 8/313:30 pm -
1 stop34h 00m
Deal found 8/9![Qatar Airways logo]()
$1,527
Last-minute flights from Seattle to KathmanduDiscover last-minute flight deals from Seattle to Kathmandu. Data last updated August 12, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Kathmandu. Data last updated August 12, 2026 and is based on user searches.
This flugladen.de deal was found by Cheapflights users on 8/11. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:25 pm -
1 stop27h 40m
Thu 9/176:00 pm -
1 stop31h 30m
Deal found 8/11![Qatar Airways logo]()
$1,073
This Indian Eagle deal was found by Cheapflights users on 8/10. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:25 pm -
1 stop27h 40m
Tue 9/153:30 pm -
1 stop34h 00m
Deal found 8/10![Qatar Airways logo]()
$1,085
This FlightHub deal was found by Cheapflights users on 8/8. 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.
Tue 9/84:25 pm -
1 stop27h 40m
Wed 9/236:00 pm -
2 stops41h 55m
Deal found 8/8![Multiple Airlines logo]()
$1,088
This Justfly.com deal was found by Cheapflights users on 8/10. 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 9/104:25 pm -
1 stop27h 40m
Thu 9/246:45 pm -
1 stop30h 45m
Deal found 8/10![Qatar Airways logo]()
$1,074
This FlightHub deal was found by Cheapflights users on 8/6. 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.
Fri 9/1810:15 am -
1 stop22h 30m
Fri 10/211:10 pm -
1 stop46h 20m
Deal found 8/6![Singapore Airlines logo]()
$1,075
This FlightHub deal was found by Cheapflights users on 8/6. 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.
Mon 9/214:25 pm -
1 stop35h 35m
Thu 11/55:40 pm -
1 stop31h 45m
Deal found 8/6![Qatar Airways logo]()
$1,079
This Justfly.com deal was found by Cheapflights users on 8/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:15 am -
1 stop22h 30m
Fri 10/1611:10 pm -
1 stop22h 20m
Deal found 8/7![Singapore Airlines logo]()
$912
This oojo deal was found by Cheapflights users on 8/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:15 am -
1 stop22h 30m
Fri 11/610:55 pm -
1 stop22h 00m
Deal found 8/7![Singapore Airlines logo]()
$982
This FlightHub deal was found by Cheapflights users on 8/11. 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.
Tue 9/224:25 pm -
1 stop27h 40m
Fri 10/166:00 pm -
1 stop31h 10m
Deal found 8/11![Qatar Airways logo]()
$1,080
This Justfly.com deal was found by Cheapflights users on 8/11. 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 9/274:25 pm -
1 stop36h 20m
Tue 10/136:00 pm -
1 stop31h 10m
Deal found 8/11![Qatar Airways logo]()
$1,082
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 August 12, 2026.
Search for one-way flight options from Seattle to Kathmandu. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.
This Indian Eagle deal was found by Cheapflights users on 8/9. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:25 pm -
1 stop27h 40m
Deal found 8/9![Qatar Airways logo]()
$532
This Indian Eagle deal was found by Cheapflights users on 8/8. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:25 pm -
1 stop33h 05m
Deal found 8/8![Qatar Airways logo]()
$535
This Trip.com deal was found by Cheapflights users on 8/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/234:25 pm -
2 stops35h 05m
Deal found 8/7![Multiple Airlines logo]()
$537
This Trip.com deal was found by Cheapflights users on 8/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:25 pm -
2 stops35h 05m
Deal found 8/9![Multiple Airlines logo]()
$539
This Indian Eagle deal was found by Cheapflights users on 8/11. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:42 am -
2 stops32h 23m
Deal found 8/11![Qatar Airways logo]()
$558
This Trip.com deal was found by Cheapflights users on 8/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/224:25 pm -
2 stops28h 35m
Deal found 8/6![Multiple Airlines logo]()
$559
This Indian Eagle deal was found by Cheapflights users on 8/10. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2811:30 pm -
2 stops31h 25m
Deal found 8/10![Multiple Airlines logo]()
$564
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/164:25 pm -
1 stop27h 40m
Deal found 8/8![Multiple Airlines logo]()
$568
This Indian Eagle deal was found by Cheapflights users on 8/11. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:35 pm -
2 stops47h 30m
Deal found 8/11![Qatar Airways logo]()
$570
This Indian Eagle deal was found by Cheapflights users on 8/6. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/224:25 pm -
1 stop27h 40m
Deal found 8/6![Qatar Airways logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Sun 11/1511:06 am -
2 stops45h 39m
Deal found 8/7![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 August 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $912 (Justfly.com) |
One-way from | $532 (Indian Eagle) |
Popular in | December |
Cheapest in | February |
Average price | $1,314 |
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 2,558,603 searches. Data last updated August 12, 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 9/21
2:56 pm-2:15 pm
2 stops58h 34m
Kathmandu Tribhuvan
Thu 10/15
6:00 pm-12:25 pm
1 stop31h 10m
$1,298
Quickest round-trip
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Wed 9/23
9:35 pm-4:45 pm
2 stops30h 25m
Kathmandu Tribhuvan
Thu 10/15
6:00 pm-12:25 pm
1 stop31h 10m
$1,312
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 1/16
2:30 pm-9:50 pm
2 stops41h 35m
Kathmandu Tribhuvan
Sun 1/31
10:55 pm-8:31 pm
3 stops35h 21m
$1,439
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Mon 10/5
4:25 pm-2:15 pm
1 stop33h 05m
Kathmandu Tribhuvan
Thu 11/12
9:35 am-8:59 pm
2 stops49h 09m
$1,460
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Thu 10/8
4:25 pm-5:30 pm
1 stop36h 20m
Kathmandu Tribhuvan
Thu 11/12
11:05 am-8:59 pm
2 stops47h 39m
$1,460
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Wed 10/21
4:25 pm-2:15 pm
1 stop33h 05m
Kathmandu Tribhuvan
Sat 11/28
5:40 pm-11:40 am
1 stop31h 45m
$1,504
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 10/3
6:39 am-4:45 pm
2 stops45h 21m
Kathmandu Tribhuvan
Thu 11/12
9:35 am-8:59 pm
2 stops49h 09m
$1,521
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 8/22
4:25 pm-8:50 am
1 stop27h 40m
Kathmandu Tribhuvan
Mon 8/31
3:30 pm-12:45 pm
1 stop34h 00m
$1,527
Cheapest one-way
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Mon 8/24
4:25 pm-2:15 pm
1 stop33h 05m
$535
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Tue 8/25
4:25 pm-2:15 pm
1 stop33h 05m
$535
Showing 1-10 of 19 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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | 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 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 80 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, February is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of $1,024). Flying from Seattle to Kathmandu in December is currently the most expensive (average of $1,532). 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 $1,072 and $1,464 in September.The cheapest round-trip price found within the last 5 days was $912 on Singapore Airlines (Sep 22-Oct 16).
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 71% 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 $943.
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 August 12, 2026.
See what other customers who have flown with Singapore Airlines,Emirates, andCathay Pacific 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.
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - SIN
Comfort
8.0
Entertainment
8.1
Food
7.8
Crew
8.6
Overall
8.2
Boarding
8.3
Reviews
1 / 20
2.0
MediocreKetan,Nov 2024
SEA - 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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Browse other Seattle and Kathmandu flight options. Last updated on August 12, 2026.
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Top 5 airlines flying from Seattle to Kathmandu
Discover the top 5 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 2,558,603 searches. Data last updated August 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$812 | Average$1,157 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$903 | Average$1,339 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$944 | Average$1,281 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$986 | Average$1,415 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$1,212 | Average$1,341 | FlexibilityNo cancel fee | On-time75% |