Which airports can I use when flying from Kathmandu to Ontario?

Flights from Kathmandu to Ontario usually depart from Kathmandu Tribhuvan (KTM) and arrive at Ontario (ONT).

What popular places can I visit in Ontario?

Some of the most popular sights in Ontario are Ontario Convention Center, Ontario Mills and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Do I need a passport to fly from Kathmandu to Ontario?

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.

Have flight prices from Kathmandu to Ontario changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,486 to $2,772. That means the highest observed fare was about 86% higher than the lowest one.

What is the time difference between Kathmandu and Ontario?

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

What car rental options are available at Ontario Airport (ONT)?

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include: · Fox · Thrifty · Europcar · Dollar · Alamo

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Flight Deals

Cheap Flights from Kathmandu to Ontario (KTM-ONT)

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Kathmandu to Ontario

Tue, Sep 22 - Wed, Mar 17

7:20 pm - 10:40 pmKTM Kathmandu Tribhuvan-ONT Ontario

40h 05m2 stops Incheon Intl Seattle/Tacoma Intl

7:00 am - 5:00 pmONT Ontario-KTM Kathmandu Tribhuvan

45h 15m2 stops Seattle/Tacoma Intl Incheon Intl

$1,486Korean Air

Tue, Sep 22 - Thu, Sep 24

7:20 pm - 10:40 pmKTM Kathmandu Tribhuvan-ONT Ontario

40h 05m2 stops Incheon Intl Seattle/Tacoma Intl

6:00 am - 5:15 pmONT Ontario-KTM Kathmandu Tribhuvan

46h 30m2 stops Seattle/Tacoma Intl Incheon Intl

$1,486Korean Air

Tue, Sep 22 - Sun, Mar 14

7:20 pm - 5:19 pmKTM Kathmandu Tribhuvan-ONT Ontario

34h 44m2 stops Incheon Intl Seattle/Tacoma Intl

7:00 am - 5:00 pmONT Ontario-KTM Kathmandu Tribhuvan

45h 15m2 stops Seattle/Tacoma Intl Incheon Intl

$1,486Korean Air

Tue, Sep 22 - Wed, Mar 17

7:20 pm - 5:19 pmKTM Kathmandu Tribhuvan-ONT Ontario

34h 44m2 stops Incheon Intl Seattle/Tacoma Intl

7:00 am - 5:00 pmONT Ontario-KTM Kathmandu Tribhuvan

45h 15m2 stops Seattle/Tacoma Intl Incheon Intl

$1,492Korean Air

Tue, Sep 22 - Sun, Mar 21

7:20 pm - 5:19 pmKTM Kathmandu Tribhuvan-ONT Ontario

34h 44m2 stops Incheon Intl Seattle/Tacoma Intl

7:00 am - 5:00 pmONT Ontario-KTM Kathmandu Tribhuvan

45h 15m2 stops Seattle/Tacoma Intl Incheon Intl

$1,492Korean Air

Tue, Sep 22 - Wed, Mar 10

7:00 pm - 7:03 pmKTM Kathmandu Tribhuvan-ONT Ontario

36h 48m2 stops Doha Hamad Intl Seattle/Tacoma Intl

6:00 am - 5:30 pmONT Ontario-KTM Kathmandu Tribhuvan

45h 45m2 stops Seattle/Tacoma Intl Doha Hamad Intl

$1,525Qatar Airways

Mon, Sep 21 - Wed, Sep 23

12:25 am - 6:00 pmKTM Kathmandu Tribhuvan-ONT Ontario

30h 20m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

12:12 pm - 8:50 amONT Ontario-KTM Kathmandu Tribhuvan

31h 53m2 stops Seattle/Tacoma Intl Doha Hamad Intl

$1,535Multiple Airlines

Sat, Oct 17 - Sun, Jan 17

7:00 pm - 11:42 pmKTM Kathmandu Tribhuvan-ONT Ontario

41h 27m2 stops Doha Hamad Intl Seattle/Tacoma Intl

11:36 am - 8:20 amONT Ontario-KTM Kathmandu Tribhuvan

30h 59m2 stops Seattle/Tacoma Intl Doha Hamad Intl

$1,544Qatar Airways

Mon, Sep 21 - Tue, Sep 22

12:25 am - 6:00 pmKTM Kathmandu Tribhuvan-ONT Ontario

30h 20m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl

12:10 am - 7:50 pmONT Ontario-KTM Kathmandu Tribhuvan

30h 55m3 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl

$1,601Multiple Airlines

Tue, Sep 22 - Wed, Mar 17

7:00 pm - 7:03 pmKTM Kathmandu Tribhuvan-ONT Ontario

36h 48m2 stops Doha Hamad Intl Seattle/Tacoma Intl

12:00 pm - 8:20 amONT Ontario-KTM Kathmandu Tribhuvan

31h 35m2 stops Seattle/Tacoma Intl Doha Hamad Intl

$1,620Qatar Airways

Booking Insights

Price, demand and travel trends for Kathmandu to Ontario flights

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

What is the cheapest airline to fly from Kathmandu to Ontario?

Korean Air ($1,486) and Qatar Airways ($1,525) are the cheapest airlines to fly round-trip from Kathmandu to Ontario according to KAYAK data over the last 5 days.

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Cheapest flight	$755

Flight from Kathmandu to Ontario

When to book flights from Kathmandu to Ontario

Are your dates flexible? Find out the best times to travel from Kathmandu to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Kathmandu to Ontario?
Flights from Kathmandu to Ontario usually depart from Kathmandu Tribhuvan (KTM) and arrive at Ontario (ONT).
What popular places can I visit in Ontario?
Some of the most popular sights in Ontario are Ontario Convention Center, Ontario Mills and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.
Do I need a passport to fly from Kathmandu to Ontario?
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.
Have flight prices from Kathmandu to Ontario changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $1,486 to $2,772. That means the highest observed fare was about 86% higher than the lowest one.
What is the time difference between Kathmandu and Ontario?
Ontario is 12 hours behind Kathmandu (Pacific Time vs Nepal Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Ontario Airport (ONT)?
Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:
· Fox
· Thrifty
· Europcar
· Dollar
· Alamo

If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.
- Azure Hotel & Suites, Trademark Collection by Wyndham
- La Quinta Inn & Suites by Wyndham Ontario Airport
- Holiday Inn Ontario Airport By IHG

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KTM - ONT

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Everything you should know

Cheap Flights from Kathmandu to Ontario (KTM-ONT)

Recent round-trip flight deals from Kathmandu to Ontario

Recent one-way flight deals from Kathmandu to Ontario

Recent last minute flight deals from Kathmandu to Ontario

Price, demand and travel trends for Kathmandu to Ontario flights

What is the cheapest airline to fly from Kathmandu to Ontario?

Key details for Kathmandu to Ontario flights

Cheapest flight

When to book flights from Kathmandu to Ontario

Your Kathmandu to Ontario flight questions, answered

Your guide to booking Kathmandu to Ontario flights

More options for your flight from Kathmandu to Ontario

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

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