$342 Cheap Flights from Ontario (ONT) to Thunder Bay (YQT)

View $342 flight on Thu, Jan 22, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay, ON (YQT-Thunder Bay Intl.)

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Cheap Flights from Ontario to Thunder Bay (ONT-YQT)

Prices were available within the past 7 days and start at $342 for one-way flights and $884 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Dec 16 - Wed, Dec 24
ONT
Ontario
YQT
Thunder Bay
$884 Roundtrip, found 2 days ago
$884
Roundtrip
found 2 days ago
Select United flight, departing Tue, Dec 16 from Ontario to Thunder Bay, returning Wed, Dec 24, priced at $884 found 2 days ago
United
Tue, Dec 16 - Thu, Dec 18
ONT
Ontario
YQT
Thunder Bay
$889 Roundtrip, found 2 days ago
$889
Roundtrip
found 2 days ago
Select United flight, departing Tue, Dec 16 from Ontario to Thunder Bay, returning Thu, Dec 18, priced at $889 found 2 days ago
United
Thu, Jan 22 - Fri, Feb 20
ONT
Ontario
YQT
Thunder Bay
$936 Roundtrip, found 1 day ago
$936
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 22 from Ontario to Thunder Bay, returning Fri, Feb 20, priced at $936 found 1 day ago
United
Tue, Dec 16 - Fri, Dec 19
ONT
Ontario
YQT
Thunder Bay
$937 Roundtrip, found 2 days ago
$937
Roundtrip
found 2 days ago
Select United flight, departing Tue, Dec 16 from Ontario to Thunder Bay, returning Fri, Dec 19, priced at $937 found 2 days ago
Air Canada
Sat, Dec 13 - Wed, Dec 24
ONT
Ontario
YQT
Thunder Bay
$943 Roundtrip, found 2 days ago
$943
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Dec 13 from Ontario to Thunder Bay, returning Wed, Dec 24, priced at $943 found 2 days ago
Air Canada
Sat, Dec 13 - Thu, Dec 18
ONT
Ontario
YQT
Thunder Bay
$949 Roundtrip, found 2 days ago
$949
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Dec 13 from Ontario to Thunder Bay, returning Thu, Dec 18, priced at $949 found 2 days ago
United
Wed, Dec 17 - Fri, Dec 19
ONT
Ontario
YQT
Thunder Bay
$992 Roundtrip, found 2 days ago
$992
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 17 from Ontario to Thunder Bay, returning Fri, Dec 19, priced at $992 found 2 days ago
Air Canada
Sat, Dec 13 - Tue, Dec 23
ONT
Ontario
YQT
Thunder Bay
$997 Roundtrip, found 2 days ago
$997
Roundtrip
found 2 days ago
Select Air Canada flight, departing Sat, Dec 13 from Ontario to Thunder Bay, returning Tue, Dec 23, priced at $997 found 2 days ago
United
Wed, Dec 17 - Mon, Dec 22
ONT
Ontario
YQT
Thunder Bay
$1,015 Roundtrip, found 2 days ago
$1,015
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 17 from Ontario to Thunder Bay, returning Mon, Dec 22, priced at $1,015 found 2 days ago
Air Canada
Wed, Dec 17 - Mon, Dec 22
ONT
Ontario
YQT
Thunder Bay
$1,038 Roundtrip, found 2 days ago
$1,038
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Dec 17 from Ontario to Thunder Bay, returning Mon, Dec 22, priced at $1,038 found 2 days ago

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT) cost?
Get a cheap one-way flight from $342 or cheap return flight from $884 from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT)?
Planning your trip for December is a good way to save, as it's the cheapest month for flights between ONT and YQT. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT)?
To find the cheapest airline that'll fly you from ONT to YQT, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT)?
Direct flights from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ONT to YQT?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT)?
Opt for a flight from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT) last-minute?
Last-minute fares from ONT to YQT are typically more expensive. For the lowest prices, start looking for flights well in advance. That being said, if you're flexible with your travel plans, it's possible to score a cheap ticket right before you leave.
Is it cheaper to book an ONT to YQT flight and hotel package?
You'll typically save money by booking an ONT to YQT flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal accommodations and flights, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Thunder Bay Intl. Airport (YQT)?
Typically, you're able to cancel or reschedule your ONT to YQT flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want more information, go to our Customer Service portal.

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Thunder Bay Intl.
Airlines serving
United
Roundtrip price
$883
Distance
1755 mi

Book with confidence

Ontario to Thunder Bay Flights

The cheapest times to fly from Ontario to Thunder Bay

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Thunder Bay are during the month of December. You can find some of the cheapest flights from Ontario to Thunder Bay with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Thunder Bay

Sunday is one of the best days to book for cheap flights from Ontario to Thunder Bay: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Thunder Bay

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Thunder Bay in 2025. You can also book with separate airlines for your outbound and return journeys, from $342 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Thunder Bay flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Thunder Bay airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ontario to Thunder Bay Flights

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*Available to One Key members.