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$632+ Cheap flights from Kathmandu (KTM) to Ontario (ONT)

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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Kathmandu to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Kathmandu (KTM) to Ontario (ONT). 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 June 12, 2025.

Round-trip from

$1,509
(Trip.com)

One-way from

$632
(Trip.com)

Popular in

November

Cheapest in

June

Average price

$1,233
From Kathmandu Tribhuvan to Ontario
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One-way flight from Kathmandu Tribhuvan to Ontario
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Highest demand for flights based on searches. 8% potential increase in price ($129 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Kathmandu to Ontario

Cheapest flights from Kathmandu to Ontario
Explore the most affordable flight options available from Kathmandu to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2811:30 pmKTM - ONT
2 stops54h 55mMultiple Airlines
Wed 12/249:45 pmONT - KTM
2 stops35h 55mMultiple Airlines
Deal found 6/10$1,509
This oojo deal was found by Cheapflights users on 6/12. 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.
Sat 7/127:35 amKTM - ONT
2 stops51h 09mAir India
Sat 7/2611:59 pmONT - KTM
2 stops34h 16mAir India
Deal found 6/12$1,996
This Korean Air deal was found by Cheapflights users on 6/10. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/147:20 pmKTM - ONT
2 stops34h 41mKorean Air
Thu 12/186:45 amONT - KTM
2 stops45h 00mKorean Air
Deal found 6/10$2,163
This oojo deal was found by Cheapflights users on 6/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2910:05 amKTM - ONT
2 stops44h 44mQatar Airways
Wed 10/153:00 pmONT - KTM
2 stops38h 05mQatar Airways
Deal found 6/10$2,228

Cheapflights Fare Finder

Customize your flight search to find flights from Kathmandu to Ontario 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 June 12, 2025.
Use the filters below to find and compare flights from Kathmandu to Ontario that are best for you.

Fly from

Kathmandu

Fly to

Ontario

Route

Depart

Return

Price

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Mon 7/28

11:30 pm-5:40 pm

2 stops54h 55m

Ontario

Wed 12/24

9:45 pm-11:25 pm

2 stops35h 55m

$1,509

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Sat 7/12

7:35 am-9:59 pm

2 stops51h 09m

Ontario

Sat 7/26

11:59 pm-11:00 pm

2 stops34h 16m

$1,996

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Mon 7/14

7:20 pm-5:16 pm

2 stops34h 41m

Ontario

Thu 12/18

6:45 am-5:30 pm

2 stops45h 00m

$2,163

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Tue 7/29

10:05 am-6:04 pm

2 stops44h 44m

Ontario

Wed 10/15

3:00 pm-5:50 pm

2 stops38h 05m

$2,228

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Wed 9/17

3:00 pm-6:00 pm

2 stops39h 45m

$632

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Sun 12/7

6:45 pm-6:17 pm

2 stops37h 17m

$1,082

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Tue 9/23

4:20 pm-9:29 pm

2 stops41h 54m

$1,132

KathmanduOntario

KTM - ONT

KTMONT

Kathmandu Tribhuvan

Fri 6/20

7:20 pm-10:46 pm

2 stops40h 11m

$1,159

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Best time to book a flight from Kathmandu to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Kathmandu with our price prediction graph.
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 Kathmandu to Ontario

What is the cheapest month to book a flight from Kathmandu to Ontario?

Currently, August is the cheapest month in which you can book a flight from Kathmandu to Ontario (average of $246). Flying from Kathmandu to Ontario in March is currently the most expensive (average of $328). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 12, 2025.
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Korean Air
8.4
Very good
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Qatar Airways
7.4
Good
3,584 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Etihad Airways
7.4
Good
1,211 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.
Air India
5.5
Fair
2,914 reviews
Korean Air
8.4
Very good
1,088 reviews

Crew

8.7

Overall

8.4

Food

8.1

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Myung Suk,May 2025

ICN - LAX

The flight was less crowded and the economic class seat was at least 5 inches longer than other airlines.

Related info for your journey

Find useful and relevant information for your journey from Kathmandu to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Kathmandu to Ontario one-way?

    $1,082 is the cheapest one-way deal found within the past few days, from Qatar Airways. You may also be able to find cheap deals on Etihad Airways and Korean Air, with prices starting from $1,132 and $1,159, respectively.

  • Can I find deals for flights from Kathmandu to Ontario that include hotel bookings?

    Yes. In addition to deals on Kathmandu to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kathmandu to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kathmandu to Ontario.

  • Can I find deals for business class flights from Kathmandu to Ontario?

    Yes. Cheapflights offers flight deals from Kathmandu to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Kathmandu to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Kathmandu to Ontario (average of $246). Flying from Kathmandu to Ontario in March is currently the most expensive (average of $328). 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.

See more FAQs

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