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Cheap flights from Ontario (ONT) to USA

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How to find the cheapest flight from
Ontario (ONT) to USA

How far in advance should I book a flight from Ontario to USA?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 24 days in advance, which can save you up to 18% on flights from Ontario to USA compared to booking the week you need them. Waiting 24 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $262. For sooner than that we have options available in the next 3 days from $304.

What is the cheapest month to fly from Ontario to USA?

Our data shows that August tends to be the cheapest month to fly to USA from Ontario. Users have commonly found prices around $260 for the month, but tickets can be as low as $64. Due to multiple factors, prepare for potentially higher prices in December.

Cheap flights from Ontario to USA in October, November 2020

The best prices found for ONT to USA flights for October, November
14 Nov - 18 Nov
$117pp
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario
4 Nov - 6 Nov
$131pp
ONT
Ontario
Frontier
 
1 STOP
PDX
Portland
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
14 Nov - 18 Nov
$131pp
ONT
Ontario
Multiple Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
ONT
Ontario

Ontario to USA 2020 flight deals

Cheap flights to USA from Ontario found for this year
9 Dec - 12 Dec
$97pp
ONT
Ontario
American Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
American Airlines
Non-Stop
ONT
Ontario
7 Dec - 12 Dec
$113pp
ONT
Ontario
Frontier
 
1 STOP
SLC
Salt Lake City
SLC
Salt Lake City
Frontier
 
1 STOP
ONT
Ontario
2 Dec - 9 Dec
$117pp
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario

Non-stop flights to USA from Ontario

Save time with Ontario to USA direct flight deals
9 Dec - 12 Dec
$97pp
ONT
Ontario
American Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
American Airlines
Non-Stop
ONT
Ontario
13 Dec - 17 Dec
$117pp
ONT
Ontario
American Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
American Airlines
Non-Stop
ONT
Ontario
19 Jan - 26 Jan
$117pp
ONT
Ontario
Alaska Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Non-Stop
ONT
Ontario

Last minute flights from Ontario to USA

Late deals on round-trip flights to USA from Ontario, departing today and this week
4 Nov - 6 Nov
$131pp
ONT
Ontario
Frontier
 
1 STOP
PDX
Portland
PDX
Portland
Frontier
 
1 STOP
ONT
Ontario
6 Nov - 7 Nov
$138pp
ONT
Ontario
Frontier
 
1 STOP
AUS
Austin Bergstrom
AUS
Austin Bergstrom
Frontier
 
1 STOP
ONT
Ontario
2 Nov - 7 Nov
$143pp
ONT
Ontario
Frontier
 
1 STOP
AUS
Austin Bergstrom
AUS
Austin Bergstrom
Frontier
 
1 STOP
ONT
Ontario

One-way flights to USA from Ontario

The cheapest one-way flights from Ontario to USA
5:40 am - 8:01 am
Alaska Airlines
Nonstop
2h 21m
ONT - PDX
Alaska Airlines
7:30 am - 7:40 am
Multiple Airlines
2 Stops
24h 10m
ONT - PDX
Multiple Airlines
$70
Kiwi.com
7:59 pm - 5:59 am
American Airlines
1 Stop
10h 00m
ONT - PDX
American Airlines

Related info for your journey

Useful info, stats and facts about Ontario to USA flights.

Flight FAQs

From Ontario to USA

Are flight prices decreasing from Ontario to USA due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Ontario and USA for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Ontario to United States to control the spread of COVID-19?

New policies can now be found on Alaska Airlines, JetBlue, and Delta to help keep travelers safe while flying. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Ontario to United States. Policies will vary by airline.

Which airlines flying from Ontario to United States have flexible cancellations due to COVID-19?

Alaska Airlines, American Airlines, and Delta are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Ontario to USA for under $100 on Cheapflights?

Yes, there are multiple flights from Ontario to USA for under $100. The cheapest flight booked recently is on American Airlines for just $97, but on average you can expect to pay $133.

Are there nonstop flights from Ontario to USA for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from Ontario to USA under $100. A good price for a nonstop flight from Ontario to USA is less than $154.

Are there last-minute flights available from Ontario to USA for under $200?

There are currently 20+ open flights from Ontario to USA within the next 7 days for less than $200.

What days are nonstop flights available from Ontario to USA?

You can find nonstop flights on the following days: Sunday, Monday, Wednesday, Thursday, Friday, Saturday.

How popular is this flight route?

Within the past month, 3,129 users have taken a look at flights from Ontario to United States.

What are the most popular routes from Ontario to USA?

Most travelers choose Ontario - Dallas/Fort Worth, Ontario - Seattle/Tacoma Intl or Ontario - Houston Hobby when deciding on the best route from Ontario to USA.

What are the cheapest Flights from Ontario to USA?

While on average a flight from Ontario to USA is generally $2,939, our data shows the cheapest flight currently is $171. When looking at the most popular route, (Ontario - Dallas/Fort Worth), you can expect to pay $178 for that flight.

How long is the flight from Ontario to USA?

Airlines like American Airlines and Delta fly from Ontario to USA in about 1h 16m. The time it takes to get you to your destination is usually consistent. All flights are typically nonstop.

What are the cheapest airlines flying from Ontario to USA round-trip?

According to our current data, American Airlines ($97), Frontier ($113), and Alaska Airlines ($117) offers the cheapest pricing from Ontario to USA.

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

$40 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Alaska Airlines, with prices starting from $49 and $59, respectively.

Arrival points for flights from Ontario to USA

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Destination information for USA

Things to know before you go. Useful info for your trip from Ontario to USA
Flight duration
1h 57m

Airports servicing Ontario

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