Cheap Flights from Ontario Intl. Airport (ONT) to Kathmandu (KTM)

View AU$1,165 flight on Mon, 9 Nov 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Tribhuvan Intl. Airport (KTM)

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Cheap Flights from Ontario Intl. Airport (ONT) to Kathmandu (KTM)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$1,879 Return, found 3 days ago
AU$1,879
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$1,879 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,077 Return, found 3 days ago
AU$2,077
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,077 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,080 Return, found 3 days ago
AU$2,080
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,080 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,103 Return, found 3 days ago
AU$2,103
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,103 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,107 Return, found 3 days ago
AU$2,107
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,107 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,203 Return, found 3 days ago
AU$2,203
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,203 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,206 Return, found 3 days ago
AU$2,206
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,206 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,274 Return, found 3 days ago
AU$2,274
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,274 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,300 Return, found 3 days ago
AU$2,300
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,300 found 3 days ago
Qatar Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$2,303 Return, found 3 days ago
AU$2,303
Return
found 3 days ago
Select Qatar Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$2,303 found 3 days ago
Alaska Airlines
Fri, 2 Oct - Mon, 9 Nov
ONT
Ontario
KTM
Kathmandu
AU$3,060 Return, found 6 hours ago
AU$3,060
Return
found 6 hours ago
Select Alaska Airlines flight, departing Fri, 2 Oct from Ontario to Kathmandu, returning Mon, 9 Nov, priced at AU$3,060 found 6 hours ago
JetBlue Airways
Wed, 16 Sept - Tue, 6 Oct
ONT
Ontario
KTM
Kathmandu
AU$3,554 Return, found 3 days ago
AU$3,554
Return
found 3 days ago
Select JetBlue Airways flight, departing Wed, 16 Sept from Ontario to Kathmandu, returning Tue, 6 Oct, priced at AU$3,554 found 3 days ago
China Airlines
Wed, 1 July - Mon, 20 July
ONT
Ontario
KTM
Kathmandu
AU$3,799 Return, found 3 days ago
AU$3,799
Return
found 3 days ago
Select China Airlines flight, departing Wed, 1 July from Ontario to Kathmandu, returning Mon, 20 July, priced at AU$3,799 found 3 days ago
United
Wed, 1 July - Mon, 20 July
ONT
Ontario
KTM
Kathmandu
AU$3,806 Return, found 3 days ago
AU$3,806
Return
found 3 days ago
Select United flight, departing Wed, 1 July from Ontario to Kathmandu, returning Mon, 20 July, priced at AU$3,806 found 3 days ago

Frequently asked questions

Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
Enter ONT to KTM and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
There are around 7 connecting flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.). Some common connection points include Seattle - Tacoma Intl. (SEA), San Francisco Intl. (SFO), and Taoyuan Intl. (TPE).
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
The earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) typically departs at approximately 6:00 AM local time, operated by Qatar Airways. This is a seasonal service active in March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
If you're flying from Los Angeles - Ontario Intl. (ONT) to Tribhuvan Intl. (KTM), you'll typically find the most flights on a Monday, with around 10 flights available. This gives you a good selection of options for your journey. Major airlines on this route include American Airlines, United Airlines, and Qatar Airways.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
The most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) are in the late evening, from 9pm to midnight. Around 71% of passengers reckon this time's best. Heaps of major carriers, including China Airlines, Thai Airways and Cathay Pacific, offer flights during this window. This timing works well because it allows you to make the most of your day before your flight and arrive at your destination refreshed.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
Flights from ONT to KTM with one stop typically take around 24 hours 20 minutes, covering approximately 7,914 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
Select the "Business class" and "First class" filters when looking for ONT to KTM flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Kathmandu from Los Angeles - Ontario Intl. (ONT)?
If you're planning to travel to Kathmandu from Los Angeles - Ontario Intl. (ONT), you can fly typically into Tribhuvan Intl. (KTM) Some flights may connect through major hubs like Taoyuan Intl. (TPE), San Francisco Intl. (SFO), Dallas-Fort Worth Intl. (DFW) before reaching Kathmandu. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kathmandu (KTM-Tribhuvan Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Tribhuvan Intl.
Return price
AU$1,878
Distance
12660 km

Book with confidence

Your quick guide to flights from Ontario Intl. Airport to Kathmandu

Pick up great flights from Ontario Intl. Airport to Kathmandu

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Ontario Intl. Airport to Kathmandu. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Ontario Intl. Airport to Kathmandu that take around hours.

Find cheap flights from Ontario Intl. Airport to Kathmandu

From the great flight deals with prices currently ranging from AU$1,879 to AU$3,806, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Ontario Intl. Airport to Kathmandu around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Kathmandu is normally in September.

Reasons to book your flight from Ontario Intl. Airport to Kathmandu with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Ontario Intl. Airport to Kathmandu across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Kathmandu right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Ontario Intl. Airport to Kathmandu

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