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

Currently, August is the cheapest month in which you can book a flight from Sendai to Ontario (average of $246). Flying from Sendai 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.

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.

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).

What is the cheapest time of day to fly from SDJ to ONT?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sendai to Ontario as you normally would.

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

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

How can I find direct flights from Sendai to Ontario?

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

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

Yes. Cheapflights offers flight deals from Sendai 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.

$2,260+ Flights from Sendai to Ontario

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Cheap flight deals from Sendai to Ontario

Round-trip from	$2,260 (STARLUX Airlines)

From Sendai to Ontario

Search Deals

Find flight deals from Sendai to Ontario

Cheapest flights from Sendai to Ontario
Explore the most affordable flight options available from Sendai to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Thu 9/185:20 pmSDJ - ONT

1 stop39h 45mSTARLUX Airlines

Mon 9/2211:10 pmONT - SDJ

1 stop24h 50mSTARLUX Airlines

Deal found 7/30

$2,260

Best flights from Sendai to Ontario
Discover carefully curated flight deals from Sendai to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2025.

Thu 9/185:20 pmSDJ - ONT

1 stop39h 45mSTARLUX Airlines

Mon 9/2211:10 pmONT - SDJ

1 stop24h 50mSTARLUX Airlines

Deal found 7/30

$2,260

Fly from

Fly to

Route

Depart

Return

Price

SendaiOntario

SDJ - ONT

SDJONT

Sendai

Thu 9/18

5:20 pm-5:05 pm

1 stop39h 45m

Ontario

Mon 9/22

11:10 pm-4:00 pm

1 stop24h 50m

$2,260

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Sendai to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Sendai 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.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown STARLUX Airlines from Sendai to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

STARLUX Airlines

9.0

Wonderful

199 reviews

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Related info for your journey

Can I find deals for flights from Sendai to Ontario that include hotel bookings?
Yes. In addition to deals on Sendai to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sendai to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sendai to Ontario.
Can I find deals for business class flights from Sendai to Ontario?
Yes. Cheapflights offers flight deals from Sendai 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 Sendai to Ontario?
Currently, August is the cheapest month in which you can book a flight from Sendai to Ontario (average of $246). Flying from Sendai 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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$2,260+ Cheap flights from Sendai (SDJ) to Ontario (ONT)

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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sendai to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Sendai to Ontario

Round-trip from

Find flight deals from Sendai to Ontario

Cheapest flights from Sendai to OntarioExplore the most affordable flight options available from Sendai to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Explore the most affordable flight options available from Sendai to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sendai to Ontario that are best for you.

Best time to book a flight from Sendai to Ontario

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

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown STARLUX Airlines from Sendai to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

How can I find direct flights from Sendai to Ontario?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sendai to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

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Cheapest flights from Sendai to Ontario
Explore the most affordable flight options available from Sendai to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.