Cheap Flights from Dallas TX to Ontario International CA from $100

Compare Dallas to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Dallas to Ontario International

Looking for a cheap last-minute deal or the best round-trip flight from Dallas to Ontario International? Find the lowest prices on one-way and round-trip tickets right here.

Ontario.$100 per passenger.Departing Sat, May 3, returning Tue, May 6.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Dallas Fort Worth International on Sat, May 3, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Tue, May 6, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $100, select.

Ontario.$100 per passenger.Departing Fri, Apr 18, returning Mon, Apr 21.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Dallas Fort Worth International on Fri, Apr 18, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Mon, Apr 21, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $100, select.

Ontario.$141 per passenger.Departing Sat, Apr 26, returning Sat, May 3.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Dallas Fort Worth International on Sat, Apr 26, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Sat, May 3, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $141, select.

Ontario.$150 per passenger.Departing Wed, May 21, returning Sat, Jun 7.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Dallas Fort Worth International on Wed, May 21, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Sat, Jun 7, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $150, select.

Ontario.$159 per passenger.Departing Tue, Jun 3, returning Sat, Jun 7.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Dallas Fort Worth International on Tue, Jun 3, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Sat, Jun 7, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $159, select.

Ontario.$160 per passenger.Departing Sat, Jul 19, returning Sat, Jul 26.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Dallas Fort Worth International on Sat, Jul 19, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Sat, Jul 26, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $160, select.

Ontario.$160 per passenger.Departing Sat, Aug 2, returning Tue, Aug 5.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Dallas Fort Worth International on Sat, Aug 2, arriving in Ontario International.Inbound direct flight with Frontier Airlines departing from Ontario International on Tue, Aug 5, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $160, select.

Ontario.$174 per passenger.Departing Thu, Mar 27, returning Sun, Mar 30.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Dallas Fort Worth International on Thu, Mar 27, arriving in Ontario International.Inbound indirect flight with Frontier Airlines, departing from Ontario International on Sun, Mar 30, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $174, select.

Find the cheapest month to fly from Dallas to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Dallas to Ontario International flights are currently cheapest in April.

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Direct flights from Dallas to Ontario International

Dallas to Ontario International: Alternative routes

Compare routes from Dallas to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

Dallas to Ontario: Flight information

The things to know before you go.

Cheapest flight found	$100
Cheapest month to fly	April
Average flight time	3 hrs, 13 mins
Most popular airline	American Airlines
Average flights per week	675

Finding cheap flights from Dallas to Ontario International: Frequently asked questions

How much are round-trip flights from Dallas to Ontario International?

The best price we found for a round-trip flight from Dallas to Ontario International is $100. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Dallas to Ontario International?

3 hours and 13 minutes is the average flight time from Dallas to Ontario International.

Which airlines fly direct from Dallas to Ontario International?

American Airlines, Qatar Airways and British Airways fly direct from Dallas to Ontario International.

How many flights are there a week from Dallas to Ontario International?

There are 675 flights per week flying from Dallas to Ontario International, as of March 2025.

When is the cheapest time to fly from Dallas to Ontario International?

The cheapest month to fly from Dallas to Ontario International is usually March 2025.

Which upcoming date is cheapest to fly from Dallas to Ontario International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Dallas to Ontario International Airport on Friday, April 18, 2025.

Can I get a direct flight from Dallas to Ontario International Airport?

Yes – the average flight time is 3 hours and 12 minutes.

How can I find the best flight deal to Ontario International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Ontario?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Dallas to Ontario International?

The cheapest airline that flies to Ontario International is Frontier Airlines.

Traveling from Dallas to Ontario International Airport (ONT): what you need to know

Begin planning your trip by checking out the ideal departure point for your flight from Dallas to Ontario International Airport (ONT). Explore the options for leaving from Dallas/Fort Worth International Airport (DFW) or Dallas Love Field (DAL), two of the city's main airports.
Take a direct flight from Dallas to Ontario International Airport and you'll be traveling for an average of 3 hours 11 minutes.
The timezone in Ontario is UTC-7, which is 2 hours behind Dallas. Ontario International Airport is located in Ontario.
Dallas/Fort Worth International Airport (DFW) to Ontario International Airport (ONT) is the most popular route. There are 61 direct departures a week to pick from. If you prefer a later start to the day, take the last flight with American Airlines at 22:59. Choose the first DFW to ONT departure operated by Frontier Airlines at 05:05 if you want to get going earlier.
For stress-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably board your flight from Dallas to ONT.
Popular months like July or vacation periods such as Christmas and New Year will mean bigger queues at check-in and security. Be on the safe side and head to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is a smart idea.

Airports in Dallas

Dallas/Fort Worth International Airport (DFW)

Dallas/Fort Worth International Airport (DFW) will have you traveling directly to your destination. Nonstop flights from Dallas to Ontario International Airport (ONT) can be booked from this terminal.
When departing from DFW, you can take a direct flight from Dallas to Ontario International Airport with American Airlines.
Located around 32 kilometers from central Dallas, DFW can be reached in about 26 minutes by car (depending on traffic). The same journey by public transport is roughly 3 hours and 55 minutes.
Catching an early flight from Dallas to Ontario International Airport? Avoid the last-minute rush to the terminal (and sneak in some extra precious sleep) by choosing one of these hotels near Dallas/Fort Worth International Airport:

About Ontario International Airport (ONT)

The last thing you want is a lengthy journey to your hotel if you're arriving on a late flight from Dallas to Ontario International Airport. Stay at one of these accommodation options near ONT instead:

Getting from Ontario International Airport (ONT) to central Ontario

From Ontario International Airport, Ontario is approximately 6 kilometers away. It takes around 10 minutes to reach the center driving.
It takes around 1 hour and 28 minutes if you're using public transport.

How to find the cheapest flights from Dallas to Ontario International Airport (ONT)

$47 is the cheapest price we've seen for a one-way ticket from Dallas to Ontario International Airport. Return flights start from $100. Prices may vary depending on availability at the time of booking.
To secure cheap tickets from Dallas to ONT, book your journey 8 months before your departure date.
To score the best price on your tickets from Dallas to Ontario International Airport, schedule your trip for May (it has the cheapest flights). Got flexible travel dates? Use the 'Whole month' search function to see the most affordable day to fly.
Create a Price Alert and keep an eye on changes on this route through push notifications or email. You'll be the first to know when the fares drop. It's all about timing when scoring cheap tickets from Dallas to ONT.
Tailor your flights with filters. Pick your departure and arrival times, airlines and total journey duration. You can also sort the results by 'Best,' 'Cheapest' or 'Fastest' flights from Dallas to Ontario International Airport.

The best time to fly from Dallas to Ontario International Airport (ONT)

May is the quietest time of year to travel to Ontario. Alternatively, follow the crowds and go in August. This is the most popular month for flights from Dallas to Ontario International Airport.
When booking your flight from Dallas to ONT, think about the kind of weather you enjoy. August is the warmest month in Ontario, with temperatures ranging from 15ºC to 35ºC.
January has average temperatures of between 4ºC and 23ºC. Look for cheap flights from Dallas to Ontario International Airport sometime around then if you like cooler conditions.

More about Ontario

Once you've booked your flight from Dallas to Ontario International Airport, think about where you'll stay in this city. Make one of these accommodation options your base for exploring Ontario:
There are so many things to do and see in this city it can be tricky to know where to start. Graber Olive House, Anthony Munoz Park and James R. Bryant Dog Park are leading attractions which should feature on every Ontario itinerary.

Complete your Ontario trip with a car rental

We use the same magic that helped you find your cheap flight from Dallas to Ontario International Airport to track down your ideal ride. Browse our car rentals in Ontario and easily compare your options. Plus you'll find all the info you need to know, from the most popular rental company to the average daily price.