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Cheap flights from Ontario to the United States from $44

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to the United States departing on 5/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
From?
To?
jeu. 5/2
jeu. 5/9

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Easily compare round-trip flights from Ontario to United States

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to United States by changing tabs
Frontier
May 4
ONT10:57 pmOntario
1h 26m
PHX12:23 amPhoenix Sky Harbor Intl
May 7
PHX6:31 pmPhoenix Sky Harbor Intl
1h 16m
ONT7:47 pmOntario
Frontier
May 4
ONT5:59 pmOntario
1h 28m
SFO7:27 pmSan Francisco
May 7
SFO10:10 amSan Francisco
1h 29m
ONT11:39 amOntario
Frontier
May 11
ONT5:59 pmOntario
1h 28m
SFO7:27 pmSan Francisco
May 14
SFO10:10 amSan Francisco
1h 29m
ONT11:39 amOntario
Frontier
May 18
ONT11:17 pmOntario
1h 23m
PHX12:40 amPhoenix Sky Harbor Intl
Jun 18
PHX4:40 pmPhoenix Sky Harbor Intl
1h 16m
ONT5:56 pmOntario
Frontier
May 21
ONT7:39 amOntario
1h 28m
SFO9:07 amSan Francisco
May 28
SFO5:15 amSan Francisco
1h 24m
ONT6:39 amOntario
Multiple Airlines
May 20
ONT6:00 amOntario
2h 45m
SEA8:45 amSeattle/Tacoma Intl
May 24
SEA2:17 pmSeattle/Tacoma Intl
2h 44m
ONT5:01 pmOntario

Find the cheapest one-way flights from Ontario to United States

If you're looking for one-way flights from Ontario to United States, view some of our deals below provided by American Airlines, Frontier and Southwest
Frontier
May 13
ONT11:07 pmOntario
1h 22m
PHX12:29 amPhoenix Sky Harbor Intl
Multiple Airlines
May 6
ONT10:59 pmOntario
15h 14m
2 stops
ORD4:13 pmChicago O'Hare Intl
Frontier
Jul 2
ONT7:36 amOntario
1h 26m
SFO9:02 amSan Francisco

Search last-minute flights to United States from Ontario

Find and compare round-trip flight prices for your last-minute flight from Ontario to United States
Frontier
May 4
ONT10:57 pmOntario
1h 26m
PHX12:23 amPhoenix Sky Harbor Intl
May 9
PHX8:50 pmPhoenix Sky Harbor Intl
1h 19m
ONT10:09 pmOntario
Frontier
May 9
ONT7:58 amOntario
1h 27m
SFO9:25 amSan Francisco
May 13
SFO10:10 amSan Francisco
1h 29m
ONT11:39 amOntario
Frontier
May 9
ONT7:58 amOntario
1h 27m
SFO9:25 amSan Francisco
May 13
SFO10:10 amSan Francisco
1h 29m
ONT11:39 amOntario
Frontier
May 4
ONT10:57 pmOntario
1h 26m
PHX12:23 amPhoenix Sky Harbor Intl
May 10
PHX8:10 pmPhoenix Sky Harbor Intl
1h 19m
ONT9:29 pmOntario
Frontier
May 9
ONT7:58 amOntario
1h 27m
SFO9:25 amSan Francisco
May 10
SFO10:15 amSan Francisco
1h 29m
ONT11:44 amOntario
Frontier
May 9
ONT7:58 amOntario
1h 27m
SFO9:25 amSan Francisco
May 10
SFO10:15 amSan Francisco
1h 29m
ONT11:44 amOntario

Best airlines flying from Ontario to United States

Compare and see reviews for airlines that fly from Ontario to United States with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $31Free CancellationRating
6.4
8,746 reviews
Search Spirit Airlines flights
Breeze AirwaysPriceFrom $33Free CancellationRating
8.1
75 reviews
Search Breeze Airways flights
Alaska AirlinesPriceFrom $35Free CancellationRating
8.0
9,115 reviews
Search Alaska Airlines flights
JetBluePriceFrom $39Free CancellationRating
7.6
4,606 reviews
Search JetBlue flights
FrontierPriceFrom $40Free CancellationRating
6.3
4,132 reviews
Search Frontier flights
DeltaPriceFrom $45Free CancellationRating
8.0
10,966 reviews
Search Delta flights
United AirlinesPriceFrom $48Free CancellationRating
7.4
11,228 reviews
Search United Airlines flights
Ravn AlaskaPriceFrom $73Free CancellationRating
8.2
11 reviews
Search Ravn Alaska flights
American AirlinesPriceFrom $177Free CancellationRating
7.3
14,889 reviews
Search American Airlines flights

Frontier flights from Ontario to United States

Our best Frontier deals on Ontario to United States flight tickets
Frontier
May 4
ONT5:59 pmOntario
1h 28m
SFO7:27 pmSan Francisco
May 7
SFO10:10 amSan Francisco
1h 29m
ONT11:39 amOntario
Frontier
May 11
ONT5:59 pmOntario
1h 28m
SFO7:27 pmSan Francisco
May 14
SFO10:10 amSan Francisco
1h 29m
ONT11:39 amOntario
Frontier
May 21
ONT7:39 amOntario
1h 28m
SFO9:07 amSan Francisco
May 28
SFO5:15 amSan Francisco
1h 24m
ONT6:39 amOntario

United Airlines flights from Ontario to United States

Our best United Airlines deals on Ontario to United States flight tickets
United Airlines
May 4
ONT10:42 amOntario
1h 34m
SFO12:16 pmSan Francisco
May 10
SFO9:30 pmSan Francisco
1h 34m
ONT11:04 pmOntario
United Airlines
May 16
ONT6:00 amOntario
9h 00m
1 stop
HNL12:00 pmHonolulu
May 20
HNL10:30 pmHonolulu
8h 31m
1 stop
ONT10:01 amOntario
United Airlines
May 4
ONT6:00 amOntario
5h 40m
1 stop
DEN12:40 pmDenver Intl
May 4
DEN5:30 pmDenver Intl
6h 34m
1 stop
ONT11:04 pmOntario

How to get the cheapest flight ticket from Ontario to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies to United States from Ontario?

Ravn Alaska. Alaska Airlines, Breeze Airways, and Frontier are the most popular carriers operating from Ontario to United States

What is the cheapest Ontario to United States flight route?

Ontario - Las Vegas Harry Reid Intl. Fly from Ontario to Las Vegas Harry Reid Intl for the best Ontario - United States flight prices

What cabin class options are available on Ontario to United States flights?

There are 4 cabin classes available to choose from on Ontario to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ontario to United States flights?

No. A direct flight is the cheapest option for a flight between Ontario to United States.

Cheap Ontario to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to United States

Best Price Found

$44

Fastest flight time

1h 05m

Direct flights

Every day

Airports in United States

7 airports
The best one-way flight to United States from Ontario in the past 72 hours is $44. The best round-trip flight deal from Ontario to United States found on momondo in the last 72 hours is $48.
The fastest flight from Ontario to United States takes 1h 05m
Direct flights go from Ontario to United States every day.
There are 7 airports near United States: Chicago O'Hare Intl (ORD), Phoenix Sky Harbor Intl (PHX), Dallas/Fort Worth (DFW), Denver Intl (DEN), San Francisco (SFO), Seattle/Tacoma Intl (SEA), Houston Hobby (HOU)

  • When did momondo last update prices for flights from Ontario Airport to United States?

    Prices for flights from Ontario Airport to United States refresh daily.

  • How many operators does momondo search for flights from Ontario Airport to United States?

  • How old do you have to be to fly from Ontario Airport to United States?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to United States.

  • What documentation or ID do you need to fly to United States?

    The necessary travel and health documents for your United States trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Why use momondo?

Why should I use momondo to find a flight deal from Ontario to United States?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to United States for you.

Can I find flights from Ontario to United States with flexible booking policies on momondo?

Yes. All flights to United States from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to United States?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to United States from Ontario.

I’m not ready to book a flight from Ontario to United States right now. Can momondo alert me if prices change?

If you are simply researching potential flights to United States, momondo offers a useful price alert feature which will track prices for flights to United States from Ontario and alert you when they change.


An easier way to manage your United States trip

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1 adult
From?
To?
jeu. 5/2
jeu. 5/9
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