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Cheap flights from Ontario to the United States from $36

1 adult
0 bags
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Mon 2/19
Mon 2/26

Deals available from 900+ travel sites.

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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

$36

Fastest flight time

0h 49m

Direct flights

Every day

Airports in United States

6 airports
The best one-way flight to United States from Ontario in the past 72 hours is $36. The best round-trip flight deal from Ontario to United States found on momondo in the last 72 hours is $38.
The fastest flight from Ontario to United States takes 0h 49m
Direct flights go from Ontario to United States every day.
There are 6 airports near United States: Phoenix Sky Harbor Intl (PHX), Dallas/Fort Worth (DFW), Salt Lake City (SLC), Denver Intl (DEN), San Francisco (SFO), Las Vegas Harry Reid Intl (LAS)

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 - Phoenix Sky Harbor Intl. Fly from Ontario to Phoenix Sky Harbor 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.

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
Feb 27
ONT12:53 pmOntario
1h 23m
PHX3:16 pmPhoenix Sky Harbor Intl
Feb 29
PHX9:27 pmPhoenix Sky Harbor Intl
1h 19m
ONT9:46 pmOntario
Frontier
Apr 13
ONT10:57 pmOntario
1h 26m
PHX12:23 amPhoenix Sky Harbor Intl
Apr 15
PHX9:01 pmPhoenix Sky Harbor Intl
1h 17m
ONT10:18 pmOntario
Frontier
Mar 2
ONT7:08 amOntario
1h 18m
PHX9:26 amPhoenix Sky Harbor Intl
Mar 5
PHX11:48 amPhoenix Sky Harbor Intl
1h 19m
ONT12:07 pmOntario
United Airlines
Apr 30
ONT6:00 amOntario
1h 29m
SFO7:29 amSan Francisco
Apr 30
SFO9:30 pmSan Francisco
1h 34m
ONT11:04 pmOntario
Frontier
Apr 15
ONT12:39 pmOntario
1h 09m
LAS1:48 pmLas Vegas Harry Reid Intl
Apr 17
LAS6:00 amLas Vegas Harry Reid Intl
1h 03m
ONT7:03 amOntario
Multiple Airlines
Feb 27
ONT12:53 pmOntario
4h 10m
1 stop
LAS5:03 pmLas Vegas Harry Reid Intl
Feb 29
LAS9:30 amLas Vegas Harry Reid Intl
12h 16m
1 stop
ONT9:46 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 Frontier
Frontier
Apr 29
ONT12:39 pmOntario
1h 09m
LAS1:48 pmLas Vegas Harry Reid Intl
Multiple Airlines
Feb 26
ONT10:36 pmOntario
16h 29m
1 stop
DFW5:05 pmDallas/Fort Worth
Frontier
Apr 20
ONT10:57 pmOntario
1h 26m
PHX12:23 amPhoenix Sky Harbor Intl

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
Feb 24
ONT7:08 amOntario
1h 18m
PHX9:26 amPhoenix Sky Harbor Intl
Feb 27
PHX4:11 pmPhoenix Sky Harbor Intl
1h 18m
ONT4:29 pmOntario
Multiple Airlines
Feb 22
ONT8:30 amOntario
7h 47m
1 stop
LAS4:17 pmLas Vegas Harry Reid Intl
Feb 26
LAS1:33 pmLas Vegas Harry Reid Intl
8h 13m
1 stop
ONT9:46 pmOntario
Frontier
Feb 24
ONT7:08 amOntario
1h 18m
PHX9:26 amPhoenix Sky Harbor Intl
Feb 26
PHX9:27 pmPhoenix Sky Harbor Intl
1h 19m
ONT9:46 pmOntario
American Airlines
Feb 20
ONT10:31 pmOntario
7h 59m
1 stop
JFK9:30 amNew York John F Kennedy Intl
Mar 5
JFK3:05 pmNew York John F Kennedy Intl
8h 51m
1 stop
ONT8:56 pmOntario
Delta
Feb 21
ONT5:35 amOntario
2h 57m
SEA8:32 amSeattle/Tacoma Intl
Mar 16
SEA7:50 pmSeattle/Tacoma Intl
2h 27m
ONT10:17 pmOntario
Frontier
Feb 24
ONT6:20 amOntario
10h 32m
1 stop
PHX5:52 pmPhoenix Sky Harbor Intl
Feb 27
PHX4:11 pmPhoenix Sky Harbor Intl
1h 18m
ONT4:29 pmOntario

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
Breeze AirwaysPriceFrom $31Free CancellationRating
7.8
13 reviews
Search Breeze Airways flights
Spirit AirlinesPriceFrom $31Free CancellationRating
6.0
2,829 reviews
Search Spirit Airlines flights
Alaska AirlinesPriceFrom $35Free CancellationRating
7.9
3,011 reviews
Search Alaska Airlines flights
FrontierPriceFrom $39Free CancellationRating
5.8
1,053 reviews
Search Frontier flights
JetBluePriceFrom $39Free CancellationRating
6.9
1,114 reviews
Search JetBlue flights
DeltaPriceFrom $45Free CancellationRating
7.8
1,585 reviews
Search Delta flights
United AirlinesPriceFrom $49Free CancellationRating
7.2
2,739 reviews
Search United Airlines flights
Ravn AlaskaPriceFrom $74Free CancellationRating
0.0
0 reviews
Search Ravn Alaska flights
American AirlinesPriceFrom $179Free CancellationRating
7.1
2,914 reviews
Search American Airlines flights

United Airlines flights from Ontario to United States

Our best United Airlines deals on Ontario to United States flight tickets
United Airlines
Apr 30
ONT6:00 amOntario
1h 29m
SFO7:29 amSan Francisco
Apr 30
SFO9:30 pmSan Francisco
1h 34m
ONT11:04 pmOntario
United Airlines
May 24
ONT6:00 amOntario
1h 25m
SFO7:25 amSan Francisco
May 27
SFO11:10 amSan Francisco
1h 35m
ONT12:45 pmOntario
United Airlines
Mar 2
ONT10:40 amOntario
1h 40m
SFO12:20 pmSan Francisco
Mar 4
SFO8:50 pmSan Francisco
1h 35m
ONT10:25 pmOntario

Frontier flights from Ontario to United States

Our best Frontier deals on Ontario to United States flight tickets
Frontier
Feb 27
ONT12:53 pmOntario
1h 23m
PHX3:16 pmPhoenix Sky Harbor Intl
Feb 29
PHX9:27 pmPhoenix Sky Harbor Intl
1h 19m
ONT9:46 pmOntario
Frontier
Apr 13
ONT10:57 pmOntario
1h 26m
PHX12:23 amPhoenix Sky Harbor Intl
Apr 15
PHX9:01 pmPhoenix Sky Harbor Intl
1h 17m
ONT10:18 pmOntario
Frontier
Apr 15
ONT12:39 pmOntario
1h 09m
LAS1:48 pmLas Vegas Harry Reid Intl
Apr 17
LAS6:00 amLas Vegas Harry Reid Intl
1h 03m
ONT7:03 amOntario

  • 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.


Alternative routes for Ontario to United States

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Los Angeles to Honolulu Flights
Fastest flight time5h 30m
Cheapest price$187
Los Angeles to Seattle Flights
Fastest flight time2h 45m
Cheapest price$96
Los Angeles to New York Flights
Fastest flight time5h 07m
Cheapest price$117
Los Angeles to Las Vegas Flights
Fastest flight time1h 11m
Cheapest price$36
Los Angeles to Dallas Flights
Fastest flight time2h 52m
Cheapest price$68
Los Angeles to Miami Flights
Fastest flight time4h 43m
Cheapest price$124
Los Angeles to Orlando Flights
Fastest flight time4h 39m
Cheapest price$120
San Francisco to Las Vegas Flights
Fastest flight time1h 30m
Cheapest price$58
Ontario to Seattle Flights
Fastest flight time2h 35m
Cheapest price$130
San Francisco to New York Flights
Fastest flight time5h 16m
Cheapest price$171
San Francisco to Honolulu Flights
Fastest flight time5h 15m
Cheapest price$245
San Francisco to Ontario Flights
Fastest flight time1h 23m
Cheapest price$58

Similar Ontario to United States flights

Flexible with your destination? Broaden your search and find flights similar to your Ontario to United States route

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.