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Good to Know: Flights to ONT
Useful information for finding cheap flights to Ontario International and booking your next trip
Cheapest Round Trip Flight
$371
Southwest Airlines• 1 stop • 37h 20mSep 27 – Sep 29
The cheapest round trip flight from Ronald Reagan Washington National to Ontario International is currently $371
Cheapest One way Flight
$389
Delta Airlines• 2 stops• 18h 45mSep 01
The cheapest one way flight from South Bend Regional to Ontario International is currently $389
Cheapest Direct Flight
$54
Frontier Airlines• nonstop• 4hOct 24
The cheapest nonstop flight from Seattle Tacoma International to Ontario International is currently $54
Fastest Flight
3h 58m
The fastest nonstop flight from Seattle Tacoma International to Ontario International takes 3h 58m
Best Flight Deals to Ontario
Identify the most efficient round-trip flights to Ontario. We present options balancing cost and convenience for your return journey.
Sep 27 - Sep 29, Economy
Washington → Ontario
37h 20m
2:30 PM - 10:10 AM • 1 stop
Washington → Ontario
13h 35m
5:40 AM - 4:55 PM • 1 stop
Southwest Airlines
Sep 27 - Sep 29, Economy
Washington → Ontario
11h 45m
11:35 AM - 3:40 PM • 1 stop
Washington → Ontario
19h 5m
7:00 AM - 9:45 PM • 2 stops
Southwest Airlines
Sep 27 - Sep 29, Economy
Washington → Ontario
11h 45m
11:35 AM - 3:40 PM • 1 stop
Washington → Ontario
13h 25m
10:55 PM - 10:00 AM • 1 stop
Southwest Airlines
Sep 27 - Sep 29, Economy
Washington → Ontario
13h 40m
5:21 PM - 10:41 PM • 1 stop
Washington → Ontario
11h 55m
7:05 AM - 5:20 PM • 1 stop
Delta Airlines
Sep 27 - Sep 29, Economy
Washington → Ontario
15h 55m
12:20 PM - 7:15 PM • 1 stop
Washington → Ontario
14h 7m
11:55 AM - 11:42 PM • 1 stop
Delta Airlines
For travel requiring no set return, access available one-way flights to Ontario (ONT). These options support extended stays or open-ended plans.
Maximize your time in Ontario, not in transit. Discover non-stop direct flights to ONT for the quickest, most straightforward journey to the Strip.
Oct 24 - Nov 01, Economy
Seattle → Ontario
4h
8:28 AM - 11:08 AM • nonstop
Seattle → Ontario
4h 16m
5:41 PM - 8:37 PM • nonstop
Frontier Airlines
Oct 24 - Nov 01, Economy
Seattle → Ontario
4h 13m
8:15 AM - 11:08 AM • nonstop
Seattle → Ontario
5h 3m
6:37 AM - 9:40 AM • nonstop
Delta Airlines
Oct 24 - Nov 01, Economy
Seattle → Ontario
3h 58m
9:25 PM - 12:03 AM • nonstop
Seattle → Ontario
4h 10m
6:00 AM - 8:50 AM • nonstop
Alaska Airlines
Oct 24 - Nov 01, Economy
Seattle → Ontario
3h 58m
9:25 PM - 12:03 AM • nonstop
Seattle → Ontario
4h 8m
4:11 PM - 6:59 PM • nonstop
Hawaiian Airlines
Oct 24 - Nov 01, Economy
Seattle → Ontario
4h 6m
2:24 PM - 5:10 PM • nonstop
Seattle → Ontario
4h 14m
2:00 PM - 4:54 PM • nonstop
Delta Airlines
Essential Information for Booking Flights from () - AI Insights
What's the cheapest airline to ont?
I can help you find the cheapest airline tickets to Ontario International Airport (ONT) for one passenger in Economy class. Let me search for options with Virgin Atlantic (VS), Air France (AF), Alaska Airlines (AS), WestJet Airlines (WS), Aerolineas Argentinas (AR), and more.
What's the popular airline to fly to ont?
American Airlines (AA) offers popular routes to Ontario International, with a focus on budget-friendly flights for one passenger in Economy class.
What's the cheapest day of the week to fly to ont?
Tuesday is the cheapest day to fly to Ontario International.
What's the cheapest month to fly to ont?
April is the month with the lowest airfares to Ontario International Airport.
What is the cheapest airline to fly to Ontario International Airport?
Virgin Atlantic (VS), Air France (AF), Alaska Airlines (AS), WestJet Airlines (WS), Aerolineas Argentinas (AR), and American Airlines (AA) offer the most affordable fares to Ontario International Airport.
When is it generally cheaper to fly to Ontario International Airport?
April is generally considered the cheapest month to fly to Ontario International Airport, offering lower fares compared to other months.
What is the name of the airport that is most frequently used for flights to Ontario International Airport?
Ontario International Airport
Destination Airport Information
| IATA Code | ONT |
| Name | Ontario International |
| City | Ontario |
| Country | US |
| Latitude | 34.055999755859375 |
| Longitude | -117.60099792480469 |
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