Book with Aviafares
United States
Aviafares brings you some of the best fares we're seeing to Ontario right now. These are our latest lead-in prices, pulled from the same booking system our US agents work. Don't keep waiting. Book them before they move.
Sat, Jul 11 - Fri, Jul 24
Denver
From
$236.99
Thu, Aug 06 - Wed, Aug 12
Dallas-Fort Worth
From
$276.99
Thu, Jul 02 - Tue, Jul 07
Houston
From
$215.99
Sun, Aug 09 - Sun, Aug 23
Las Vegas
From
$693.99
Fri, Jul 24 - Fri, Jul 31
Chicago
From
$311.99
Fri, Aug 28 - Wed, Sep 09
Oakland
From
$568.99
Fri, Aug 21 - Thu, Aug 27
Portland
From
$779.99
Sat, Aug 29 - Sat, Sep 12
Phoenix
From
$783.99
Indicative fares based on historical lead-in pricing to Ontario; live search above returns today's bookable offers.
Need help booking a flight to Ontario? Talk to a US agent.
Unpublished consolidator rates on premium cabins, 24/7.
Ontario sits in United States and is served by 2 airports in Aviafares's booking network. 9 airlines operate 26 scheduled routes into the city, from 15 origin cities across 3 countries.
You can book Ontario flights through Aviafares at the same published fares you'd see on any airline's own site, and our US booking team also pulls unpublished consolidator rates on premium cabins that don't show up in public search. If you need help with a complex itinerary, a schedule change, or just want a second opinion on the best routing, call our 24/7 line.
Ontario is served by 2 commercial airports: Ontario International Airport (ONT), Ontario Municipal Airport (ONO). Compare options below; the fare you book on Aviafares will clearly state the exact airport in your confirmation.
Top US origins flying into Ontario include Phoenix, Denver, Seattle, Dallas-Fort Worth. For the full list of direct and one-stop options, scroll to "Top cities flying to Ontario" below.
Changes, cancellations, schedule irregularities, and refunds on any Ontario ticket are handled by our US-based booking team around the clock. If your flight is cancelled or rescheduled, we rebook you on the next available option at the airline's published fees (or, for US-touching cancellations, file for the full refund you're entitled to under DOT rules). Call the number at the top of this page or request a callback.
Commercial airports in the Ontario metro, ranked by inbound route count.
US-origin routes first, then the busiest international origins in our booking system.
Phoenix→Ontario
from United States
4
routes
Denver→Ontario
from United States
3
routes
Seattle→Ontario
from United States
2
routes
Dallas-Fort Worth→Ontario
from United States
2
routes
Portland→Ontario
from United States
2
routes
Chicago→Ontario
from United States
2
routes
Las Vegas→Ontario
from United States
1
routes
San Francisco→Ontario
from United States
1
routes
Carriers with the most scheduled service to Ontario in our network.
More cities in United States our US agents book every day.
Our 24/7 US booking team knows fare rules, change policies, and unpublished consolidator rates on Ontario routes cold. One call gets you a real answer.