ONT offers a smooth security process with checkpoints in both terminals, often quicker than larger airports like LAX.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $135 (CheapOair) |
One-way from | $56 (Frontier) |
Popular in | June |
Cheapest in | April |
Average price | $278 |
Good round-trip deal | $267 or less |
Good one-way deal | $162 or less |
Fly from
Fly to
Route
Depart
Return
Price
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Sat 11/22
6:30 am-1:50 pm
1 stop5h 20m
Dallas/Fort Worth
Sun 11/23
10:45 pm-9:06 pm
1 stop24h 21m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Mon 12/1
6:12 pm-11:16 pm
Nonstop3h 04m
Dallas/Fort Worth
Thu 12/4
5:16 pm-6:35 pm
Nonstop3h 19m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Mon 12/1
5:06 pm-9:08 pm
1 stop26h 02m
Dallas/Fort Worth
Wed 12/10
10:38 pm-9:17 pm
1 stop24h 39m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Mon 11/24
6:16 pm-11:20 pm
Nonstop3h 04m
Dallas/Fort Worth
Sat 11/29
2:50 pm-9:06 pm
1 stop8h 16m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Mon 11/17
7:54 am-1:08 pm
Nonstop3h 14m
Dallas/Fort Worth
Mon 11/24
6:00 am-7:20 am
Nonstop3h 20m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Mon 11/17
7:54 am-1:08 pm
Nonstop3h 14m
Dallas/Fort Worth
Sun 11/23
7:35 am-8:59 am
Nonstop3h 24m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Sat 12/13
12:40 pm-11:50 pm
1 stop9h 10m
Dallas/Fort Worth
Mon 12/15
4:27 pm-10:47 pm
1 stop8h 20m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Wed 12/17
6:15 am-5:43 am
1 stop21h 28m
Dallas/Fort Worth
Thu 1/1
3:56 pm-11:59 pm
1 stop10h 03m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Sat 12/20
3:27 pm-8:29 pm
Nonstop3h 02m
Dallas/Fort Worth
Wed 12/31
2:06 pm-3:27 pm
Nonstop3h 21m
OntarioDallas
ONT - DFW
ONTDFW
Ontario
Tue 11/25
5:06 pm-5:48 am
1 stop10h 42m
Dallas/Fort Worth
Sat 11/29
2:50 pm-9:06 pm
1 stop8h 16m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
To ensure you get the cheapest price possible for a flight from Ontario to Dallas/Fort Worth Airport, you should look to book at least 35 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, March is the cheapest month in which you can book a flight from Ontario to Dallas/Fort Worth Airport (average of $76). Flying from Ontario to Dallas/Fort Worth Airport in July is currently the most expensive (average of $109). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from Ontario to Dallas/Fort Worth Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 43% on your trip compared to booking a flight in the morning.
Travelers seeking maximum savings on their Ontario to Dallas/Fort Worth Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
About 13% of weekly flights between Ontario and Dallas have experienced delays in the past year, with the average delay time being 151 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Over the last year, British Airways have had the lowest number of delays on this route, with just 13% of flights being delayed.
Denver (DEN) – chosen by Cheapflights users on 60% of 1-stop itineraries from Ontario to Dallas/Fort Worth Airport on Cheapflights.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 5h 32m.
Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 5h 32m.
Flights via Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 1h 13m.
Entertainment
Comfort
Boarding
Food
Crew
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Entertainment
Comfort
Boarding
Food
Crew
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Entertainment
Comfort
Boarding
Food
Crew
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Entertainment
Comfort
Boarding
Food
Crew
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Entertainment
Comfort
Boarding
Food
Crew
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
Entertainment
Comfort
Boarding
Food
Crew
Overall
Reviews
Hannah,Aug 2025
SFO - SAN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$175 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$89 | Average$189 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$153 | Average$472 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$161 | Average$305 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$183 | Average$333 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$225 | Average$267 | FlexibilityNo cancel fee | On-time75% |