ONT

$125 Find Cheap Flights from Dallas to Ontario - Compare and Save

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Everything you should know

Cheapest round-trip
$178
Typical prices: $202-$396
Frontier
Wed 10/17Thu 10/18
DFW - ONT • 2 stops
Cheapest non-stop
$224
Typical prices: $200-$400
Frontier
Mon 10/15Sat 10/20
DFW - ONT • Non-stop
Advice from real travelers
Frontier Economy Bundle adds a carry-on and seat choice; Premium Bundle costs $20 more.
American Main Cabin Extra adds early boarding; use the app for inflight entertainment.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with American Airlines, Southwest and Frontier. Average duration is 3h 10m
Direct flights
+1
Direct flights
+1
Top routes
Cheapest • 15% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 22 weeks in advance save around 36% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 30% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $234 (round-trip)
Shortest trip • 4h 59m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Dallas to Ontario

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dallas to Ontario

Sat, Oct 17 - Sun, Oct 18
Frontier Logo
6:30 am - 11:50 pmDFW  Dallas/Fort Worth-ONT Ontario
19h 20m2 stops Las Vegas Harry Reid Intl Denver Intl
Frontier Logo
8:03 pm - 12:59 amONT  Ontario-DFW Dallas/Fort Worth
2h 56mnonstop
$178Frontier
Wed, Oct 14 - Thu, Oct 22
Frontier Logo
7:00 am - 11:50 pmDFW  Dallas/Fort Worth-ONT Ontario
18h 50m1 stop Denver Intl
Frontier Logo
11:52 am - 12:16 amONT  Ontario-DFW Dallas/Fort Worth
10h 24m1 stop Denver Intl
$181Frontier
Sat, Sep 12 - Mon, Sep 14
Frontier Logo
2:48 pm - 11:47 pmDFW  Dallas/Fort Worth-ONT Ontario
10h 59m1 stop Denver Intl
Frontier Logo
11:45 am - 12:20 amONT  Ontario-DFW Dallas/Fort Worth
10h 35m1 stop Denver Intl
$181Frontier
Sat, Sep 12 - Sat, Sep 19
Multiple Airlines Logo
3:30 pm - 4:46 pmDFW  Dallas/Fort Worth-ONT Ontario
3h 16mnonstop
Multiple Airlines Logo
7:12 am - 4:41 pmONT  Ontario-DFW Dallas/Fort Worth
7h 29m1 stop Portland
$283Multiple Airlines
Sat, Sep 12 - Sat, Sep 19
Multiple Airlines Logo
3:30 pm - 4:46 pmDFW  Dallas/Fort Worth-ONT Ontario
3h 16mnonstop
Multiple Airlines Logo
7:12 am - 4:41 pmONT  Ontario-DFW Dallas/Fort Worth
7h 29m1 stop Portland
$286Multiple Airlines
Sat, Sep 12 - Sat, Sep 19
Multiple Airlines Logo
3:30 pm - 4:46 pmDFW  Dallas/Fort Worth-ONT Ontario
3h 16mnonstop
Multiple Airlines Logo
3:14 pm - 11:59 amONT  Ontario-DFW Dallas/Fort Worth
18h 45m1 stop Seattle/Tacoma Intl
$288Multiple Airlines
Thu, Dec 17 - Mon, Dec 21
American Airlines Logo
8:20 am - 9:44 amDFW  Dallas/Fort Worth-ONT Ontario
3h 24mnonstop
American Airlines Logo
11:59 pm - 4:52 amONT  Ontario-DFW Dallas/Fort Worth
2h 53mnonstop
$317American Airlines
Wed, Oct 21 - Wed, Oct 28
American Airlines Logo
10:40 am - 11:53 amDFW  Dallas/Fort Worth-ONT Ontario
3h 13mnonstop
American Airlines Logo
12:43 pm - 5:50 pmONT  Ontario-DFW Dallas/Fort Worth
3h 07mnonstop
$317American Airlines
Sat, Sep 19 - Sat, Sep 26
Southwest Logo
2:55 pm - 4:00 pmDAL  Dallas Love Field-ONT Ontario
3h 05mnonstop
Southwest Logo
7:05 am - 12:00 pmONT  Ontario-DAL Dallas Love Field
2h 55mnonstop
$317Southwest
Thu, Nov 5 - Mon, Nov 9
Southwest Logo
9:05 pm - 10:10 pmDAL  Dallas Love Field-ONT Ontario
3h 05mnonstop
Southwest Logo
6:50 am - 11:40 amONT  Ontario-DAL Dallas Love Field
2h 50mnonstop
$317Southwest
Booking Insights

Price, demand and travel trends for Dallas to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Dallas to Ontario with more confidence.

How much is a round-trip flight from Dallas to Ontario?

Round-trip flights from Dallas to Ontario start at $178. Prices are below average for this route right now, with typical round-trip fares ranging from $202 to $396. The lowest price found in the past 5 days was $178 on Frontier.

What's the cheapest day of the week to fly from Dallas to Ontario?

Thursday is the cheapest day of the week to fly from Dallas to Ontario, it is 10% cheaper than the average day. Sunday is the most expensive day with flight prices 27% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Dallas to Ontario?

  • September is the cheapest month to fly from Dallas to Ontario at $199 round-trip.
  • July ($376) and June ($363) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 88% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Dallas to Ontario the cheapest?

Flights from Dallas to Ontario are cheapest 22 weeks before departure. Booking in this window typically costs about 36% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Dallas to Ontario

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Jennifer Simonson

Jennifer Simonson

Expert on ONT and DFW

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Key details for Dallas to Ontario flights

Low season

May

Cheapest flight

$125
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Dallas/Fort Worth Airport to Ontario

When to book flights from Dallas to Ontario

Are your dates flexible? Find out the best times to travel from Dallas to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Dallas to Ontario: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Dallas to Ontario 
RicardoFlew with American Airlines-Aug 2026
Enjoy the Dallas airport with its variety of restaurants and stores if you have to wait for long layovers.
FraxysFlew with American Airlines-Feb 2026
Bring your own snacks or sandwich for dinner in the plane.
JoelFlew with American Airlines-May 2024
Dallas is a very spread out airport, jus make sure that you have enough time to transfer during layovers. Also all the restaurants close fairly early

Your Dallas to Ontario flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airlines offer extra legroom and free seat selection on Dallas to Ontario flights?

    Among airlines operating Dallas to Ontario flights:

    • Frontier: offers free seat selection
    • American Airlines: offers extra legroom; offers free seat selection
    • Southwest: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • What airlines are available from Dallas to Ontario?

    3 airlines operate flights between Dallas and Ontario. The airlines offering nonstop flights on this route include:

    • American Airlines
    • Southwest
    • Frontier

  • Which airports can I use when flying from Dallas to Ontario?

    Flights from Dallas to Ontario may depart from several airports in Dallas area, including Dallas Addison (ADS), Dallas Love Field (DAL) and Dallas/Fort Worth (DFW). Flights usually arrive at Ontario (ONT).

  • Which airlines include bags at no extra cost on Dallas to Ontario flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • American Airlines: a cabin bag and a checked bag in Economy Class
    • Southwest: a cabin bag and a checked bag in Economy Class
    • Frontier: a cabin bag and a checked bag in Business Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from Dallas to Ontario?

    Four cabin classes are available on flights from Dallas to Ontario:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How much can I save by taking a layover when flying from Dallas to Ontario?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $234 round-trip via Denver Intl (DEN), compared to $287 for nonstop.

  • What is the standard checked-bag allowance on flights from Dallas to Ontario?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $42–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which airports do connecting flights from Dallas to Ontario pass through?

    One-stop flights from Dallas to Ontario most commonly connect through:

    • Denver Intl (DEN) - 44% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 25% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 17% of one-stop connections
    • Salt Lake City (SLC) - 10% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Dallas to Ontario?

    Yes. Being flexible with your travel dates can save you up to 29% on the Dallas to Ontario route. Thursday is the cheapest departure day at $260 round-trip on average, while Sunday is the most expensive at $365, a difference of $105. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How are flight departures from Dallas to Ontario spread across the day?

    Morning is the busiest departure period on Dallas to Ontario flights, with 34% of flights leaving in that window. Evening departures account for 33%, afternoon flights for 17%, and night flights for 16%.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center, Ontario Mills and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

  • What are the earliest and latest flights from Dallas to Ontario?

    These are the earliest and latest flight times available from Dallas to Ontario:

    • Earliest: departs at 7:30 am and lands at 10:40 am
    • Latest: departs at 10:41 pm and lands at 1:51 am.

    The flight takes about 3h 10m.

  • How expensive are last-minute Dallas to Ontario flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 21% above the route average of $286. Book 22 weeks before departure for the lowest fares.

  • How long is a flight from Dallas to Ontario?

    A nonstop flight from Dallas to Ontario takes 3h 10m, covering 1,199 miles.

  • Do I need a passport to fly from Dallas to Ontario?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Dallas to Ontario changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $178 to $1,249. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Dallas to Ontario looking right now?

    One-way fares from Dallas to Ontario are currently lower than usual. Average one-way flight prices are about $158, which is 19% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Dallas to Ontario?

    Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 4h 59m, compared with 5h 54m via Salt Lake City (SLC) and 6h 58m via Houston George Bush Intcntl (IAH).

  • What is the time difference between Dallas and Ontario?

    Ontario is 2 hours behind Dallas (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:
    · Fox
    · Thrifty
    · Europcar
    · Dollar
    · Alamo

  • How much should I expect to pay for a Dallas to Ontario flight?

    Round-trip flights from Dallas to Ontario range from $202 to $396, with an average of $286 over the past 12 months. Anything below $202 counts as a good deal.

  • Which airlines offer Wi-Fi on Dallas to Ontario flights?

    Two airlines offer in-flight Wi-Fi on Dallas to Ontario flights:

    • • American Airlines
    • • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

Your guide to booking Dallas to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Sunday. On this route, Thursday flights average $260 - about $105 less than Sunday (29% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 22 weeks before you fly. On this route, that window historically saves about 36% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Dallas to Ontario trip for September. Fares historically average $199 round-trip in that month - typically $177 less than the most expensive month, which is July (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Denver Intl Airport (DEN) can be cheaper than flying direct. The cheapest layover option averages $234 round-trip on this route - about $54 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.
    - Azure Hotel & Suites, Trademark Collection by Wyndham
    - La Quinta Inn & Suites by Wyndham Ontario Airport
    - Holiday Inn Ontario Airport By IHG

Prefer to fly direct from Dallas to Ontario?

 
Find which airlines fly direct from Dallas to Ontario Airport, which days they fly and book direct flights.

Direct departures

Dallas to Ontario

Monday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Tuesday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Wednesday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Thursday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Friday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Saturday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Sunday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

See more direct flights

Direct returns

Ontario to Dallas

Monday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Tuesday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Wednesday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Thursday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Friday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Saturday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

Sunday

American Airlines,Frontier,Southwest

American Airlines,Frontier, +1 more

See more direct flights

Everything you need to know for your flight from Dallas to Ontario

Information on your arrival and departure airports