Cheap Flights from Ontario Intl. Airport Airport (ONT)

View £66 flight on Mon, 1 Jun 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT)

  • Alaska Airlines

  • American Airlines

  • United

  • Delta

  • Southwest Airlines

  • Frontier Airlines

  • Volaris

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Flights from Ontario Intl. Airport Airport

Prices were available within the past 7 days and start at £66 for one-way flights and £102 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 3 Jun - Sat, 13 Jun
ONT
Ontario
SEA
Seattle
£102 Return, found 3 days ago
£102
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 3 Jun from Ontario to Seattle, returning Sat, 13 Jun, priced at £102 found 3 days ago
Delta
Wed, 3 Jun - Thu, 11 Jun
ONT
Ontario
SEA
Seattle
£102 Return, found 3 days ago
£102
Return
found 3 days ago
Select Delta flight, departing Wed, 3 Jun from Ontario to Seattle, returning Thu, 11 Jun, priced at £102 found 3 days ago
Alaska Airlines
Wed, 3 Jun - Tue, 16 Jun
ONT
Ontario
SEA
Seattle
£131 Return, found 3 days ago
£131
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 3 Jun from Ontario to Seattle, returning Tue, 16 Jun, priced at £131 found 3 days ago
Alaska Airlines
Tue, 9 Jun - Wed, 10 Jun
ONT
Ontario
SEA
Seattle
£146 Return, found 3 days ago
£146
Return
found 3 days ago
Select Alaska Airlines flight, departing Tue, 9 Jun from Ontario to Seattle, returning Wed, 10 Jun, priced at £146 found 3 days ago
Alaska Airlines
Sat, 30 May - Sun, 31 May
ONT
Ontario
PDX
Portland
£153 Return, found 5 days ago
£153
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 30 May from Ontario to Portland, returning Sun, 31 May, priced at £153 found 5 days ago
Alaska Airlines
Thu, 11 Jun - Tue, 16 Jun
ONT
Ontario
SEA
Seattle
£160 Return, found 3 days ago
£160
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Ontario to Seattle, returning Tue, 16 Jun, priced at £160 found 3 days ago
Alaska Airlines
Sat, 30 May - Sun, 31 May
ONT
Ontario
PDX
Portland
£161 Return, found 5 days ago
£161
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 30 May from Ontario to Portland, returning Sun, 31 May, priced at £161 found 5 days ago
American Airlines
Wed, 10 Jun - Sat, 27 Jun
ONT
Ontario
PHX
Phoenix
£175 Return, found 2 days ago
£175
Return
found 2 days ago
Select American Airlines flight, departing Wed, 10 Jun from Ontario to Phoenix, returning Sat, 27 Jun, priced at £175 found 2 days ago
United
Thu, 1 Oct - Thu, 26 Nov
ONT
Ontario
SFO
San Francisco
£227 Return, found 2 days ago
£227
Return
found 2 days ago
Select United flight, departing Thu, 1 Oct from Ontario to San Francisco, returning Thu, 26 Nov, priced at £227 found 2 days ago
Aeromexico
Sun, 16 Aug - Sun, 23 Aug
ONT
Ontario
GDL
Guadalajara
£288 Return, found 6 hours ago
£288
Return
found 6 hours ago
Select Aeromexico flight, departing Sun, 16 Aug from Ontario to Guadalajara, returning Sun, 23 Aug, priced at £288 found 6 hours ago

Frequently asked questions

What is the airport code for Los Angeles - Ontario Intl. Airport (ONT)?
Los Angeles - Ontario Intl. Airport (ONT) uses the airport code: ONT.
How many terminals are there in Ontario Airport and how early should I arrive before my flight?
You'll find flights operating out of 2 terminals at Ontario Airport. A few days before you travel, check your ticket or contact your airline to confirm whether you'll be leaving from 2 or 4. For domestic flights, it's recommended to arrive 1.5-2 hours before your departure time. If you're travelling internationally, arrive 2-3 hours in advance to allow ample time for checking bags, security lines and locating your gate.
Does Ontario Airport have a hotel?
ONT doesn't have any hotels in the immediate surrounds, but that doesn't mean all is lost. You're sure to find someplace comfortable to stay before you jet off if you broaden your search. Only a brief cab ride from the terminals, the Hotel d'Lins Ontario Airport might be exactly what you're looking for. It offers a swimming pool, a garden and free internet services. The Ontario Airport Hotel & Conference Centre is also close by. Here you can use mountain views, a cafe and a swimming pool. With convenient options like these, you definitely won't need to sleep on the airport floor if you're flying out early.
Are there private lounges in Los Angeles - Ontario Intl. Airport (ONT)?
Yes, Los Angeles - Ontario Intl. Airport (ONT) offers passengers at least one private lounge. Find out the types of amenities provided and your eligibility for access by checking the airport's website.
What airlines fly out of Ontario Airport?
You have plenty of choices when flying out of ONT with these reliable domestic carriers:

  • American Airlines
  • Frontier Airlines
  • Delta Air Lines

Cross a new country off your travel bucket list with China Airlines. This leading international airline has flights out of Los Angeles - Ontario Intl. Airport (ONT) and will have a destination that'll make you want to click the "book" button.
How many flights per day fly out of ONT?
Head for someplace new on one of the 75 flights that leave Los Angeles - Ontario Intl. Airport (ONT) each day. If you're about to plan your next great escape, look up this airport's destinations.
How to find cheap flights from ONT with Expedia?
The cheapest one-way flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) was to Phoenix (PHX) at £66. One of the simplest ways to find a cheap flight with Expedia is to enter your preferred dates and destination, and then sort your results by price. These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply. You'll always snag a real bargain with Expedia, but our "Flexible dates" tool makes it that extra bit easier. First, enter your destination and flight dates. Then, click on "Flexible dates" above the search results to browse the cheapest prices for days surrounding your trip. If you want to narrow your search, you can filter by airline preference, specific departure and arrival times and more.
Where can you fly to from Los Angeles - Ontario Intl. Airport (ONT)?
From Los Angeles - Ontario Intl. Airport (ONT), a large number of people venture to Taipei. You'll be in good company if you plan on taking a trip to this popular destination. Many domestic travellers jet to Phoenix, Dallas or Las Vegas. Compare the fares, find impressive deals and secure your dream getaway for less.
What is the cancellation policy on flights and how do I cancel my flight on Expedia?
Most flights are free to cancel within 24 hours of making the reservation. However, some flights are non-refundable, and you may receive a flight credit from the airline to use for a future booking. For more information, please visit our Customer Service Portal.

Travel information

Ontario Intl. Airport Airport Information

Airport Name
Airport Location
Airport Code
Latitude
Longitude
Altitude
Ontario Intl.Ontario, USIATA: ONT, ICAO: KONT, GPS Code: KONT34.056000-117.600998287.73 meters

Ontario Intl., ONT airport, offers flights from multiple airline carriers to many popular global destinations. Above you'll find some useful information about Ontario’s airports that can help you in planning your next trip. Expedia offers flights from Ontario Intl. on multiple airline carriers, and makes it easy and affordable for you to book.

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