Cheap flights to Ontario (ONT)

Good to Know: Flights to ONT

Useful information for finding cheap flights to Ontario International and booking your next trip

Cheapest Round Trip Flight

$302

Southwest Airlines • 1 stop • 7h 10m

Jul 18 – Jul 20

The cheapest round trip flight from Dallas to Ontario (DAL-ONT-DAL) is currently $302

🔍 Search Flights

Cheapest One way Flight

$327

Southwest Airlines • 1 stop • 10h 30m

Jul 22

The cheapest one way flight from San Jose to Ontario (SJC-ONT) is currently $327

🔍 Search Flights

Cheapest Direct Flight

$365

Alaska Airlines • nonstop • 3h 58m

Jul 14

The cheapest nonstop flight from Seattle to Ontario (SEA-ONT) is currently $365

🔍 Search Flights

Fastest Flight

3h 58m

The fastest nonstop flight from Seattle to Ontario (SEA-ONT) takes 3h 58m

Top Airlines Flying to Ontario International (ONT)

Southwest Airlines

Delta Airlines

Alaska Airlines

United Airlines

American Airlines

Aeromexico

WestJet Airlines

Sun Country Airlines

Avianca

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.

Jul 18 - Jul 20, Economy

Dallas → Ontario

7h 10m

1:50 PM - 4:20 PM • 1 stop

Dallas → Ontario

5h 5m

5:00 AM - 10:05 AM • nonstop

$302

Southwest Airlines

Jul 17 - Jul 21, Economy

Austin → Ontario

14h 14m

4:17 PM - 11:11 PM • 1 stop

Austin → Ontario

14h 19m

8:20 AM - 7:19 PM • 2 stops

$336

Alaska Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

7h 27m

12:05 PM - 4:52 PM • 1 stop

Seattle → Ontario

7h 33m

7:00 AM - 11:53 AM • 1 stop

$370

Alaska Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

11h 40m

9:30 AM - 4:30 PM • 1 stop

Seattle → Ontario

4h 9m

6:01 PM - 8:50 PM • nonstop

$907

Delta Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

10h 40m

5:30 AM - 12:10 PM • 1 stop

Seattle → Ontario

4h 9m

6:01 PM - 8:50 PM • nonstop

$907

Delta Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

7h 35m

7:15 AM - 12:10 PM • 1 stop

Seattle → Ontario

10h 49m

6:00 AM - 12:49 PM • 1 stop

$916

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.

Jul 22, Economy

San Jose → Ontario

10h 30m

1:30 PM - 8:00 PM • 1 stop

$327

Southwest Airlines

Jul 22, Economy

San Jose → Ontario

15h 10m

1:00 PM - 10:10 PM • 2 stops

$333

Southwest Airlines

Jul 22, Economy

San Jose → Ontario

13h 25m

3:00 PM - 11:05 PM • 2 stops

$333

Southwest Airlines

Jul 22, Economy

San Jose → Ontario

13h 40m

1:50 PM - 10:10 PM • 2 stops

$333

Southwest Airlines

Jul 22, Economy

San Jose → Ontario

15h 20m

7:45 AM - 5:05 PM • 2 stops

$333

Southwest Airlines

Jul 22, Economy

San Jose → Ontario

14h

9:55 AM - 6:35 PM • 2 stops

$333

Southwest Airlines

Need to travel to Ontario soon? View current last-minute flight options to ONT for spontaneous or pressing plans.

Jul 18 - Jul 20, Economy

Dallas → Ontario

7h 10m

1:50 PM - 4:20 PM • 1 stop

Dallas → Ontario

5h 5m

5:00 AM - 10:05 AM • nonstop

$302

Southwest Airlines

Jul 17 - Jul 21, Economy

Austin → Ontario

14h 14m

4:17 PM - 11:11 PM • 1 stop

Austin → Ontario

14h 19m

8:20 AM - 7:19 PM • 2 stops

$336

Alaska Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

7h 27m

12:05 PM - 4:52 PM • 1 stop

Seattle → Ontario

7h 33m

7:00 AM - 11:53 AM • 1 stop

$370

Alaska Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

11h 40m

9:30 AM - 4:30 PM • 1 stop

Seattle → Ontario

4h 9m

6:01 PM - 8:50 PM • nonstop

$907

Delta Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

10h 40m

5:30 AM - 12:10 PM • 1 stop

Seattle → Ontario

4h 9m

6:01 PM - 8:50 PM • nonstop

$907

Delta Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

7h 35m

7:15 AM - 12:10 PM • 1 stop

Seattle → Ontario

10h 49m

6:00 AM - 12:49 PM • 1 stop

$916

Delta Airlines

Maximize your time in Ontario, not in transit. Discover non-stop direct flights to ONT for the quickest, most straightforward journey to the Strip.

Jul 14 - Jul 18, Economy

Seattle → Ontario

3h 58m

8:33 PM - 11:11 PM • nonstop

Seattle → Ontario

12:04 PM - 2:44 PM • nonstop

$365

Alaska Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

4h 4m

10:25 AM - 1:09 PM • nonstop

Seattle → Ontario

3h 59m

9:20 PM - 11:59 PM • nonstop

$365

Alaska Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

1:50 PM - 4:30 PM • nonstop

Seattle → Ontario

3h 59m

9:20 PM - 11:59 PM • nonstop

$365

Alaska Airlines

Jul 18 - Jul 20, Economy

Dallas → Ontario

4:35 PM - 5:35 PM • nonstop

Dallas → Ontario

4h 15m

4:20 PM - 9:15 PM • nonstop

$379

Southwest Airlines

Jul 17 - Jul 21, Economy

Austin → Ontario

4h 15m

8:10 PM - 9:05 PM • nonstop

Austin → Ontario

11:15 AM - 4:15 PM • nonstop

$687

Southwest Airlines

Jul 14 - Jul 18, Economy

Seattle → Ontario

4h 13m

7:59 PM - 10:52 PM • nonstop

Seattle → Ontario

4h 9m

6:01 PM - 8:50 PM • nonstop

$897

Delta Airlines

Fly to Ontario Easily with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight to Ontario? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Flights to Ontario (ONT)

Which airlines fly to Ontario?

Airlines flying the most to Ontario (ONT)

What is the cheapest flight to ONT Airport?

In the past couple of days, the cheapest tickets to ONT were found on WN : USD 333

What are the most popular origin to Ontario (ONT)?

Travelers frequently travel from Austin, Dallas, Seattle, San Jose to Ontario (ONT)

Airport Information: Ontario International (ONT)

IATA Code: ONT
Name: Ontario International
City: Ontario
Country: US
Latitude: 34.055999755859375
Longitude: -117.60099792480469

More Flight Options to Ontario, CA

Cheap flights to North America (NA) Cheap flights to United States (US) Cheap flights to California (US-CA) Cheap flights from North America (NA) Cheap flights from United States (US) Cheap flights from California (US-CA) Flights to Ontario (ONT) Flights to Ontario (ONT) Flights from Ontario (ONT)

Why Fareleaders for Flights to ONT

Lowest Prices

Find the lowest ONT airfares by comparing hundreds of airlines and agencies.

New Deals Everyday

Never miss a deal on ONT flights—we update prices daily to bring you the best airfares.

No Service Fees

Compare hundreds of ONT flights and find the best deals without any added service charges.

Find Cheap Flights to Ontario (ONT) Starting from $302

Good to Know: Flights to ONT

Top Airlines Flying to Ontario International (ONT)

Southwest Airlines

Delta Airlines

Alaska Airlines

United Airlines

American Airlines

Aeromexico

WestJet Airlines

Sun Country Airlines

Avianca

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.

For travel requiring no set return, access available one-way flights to Ontario (ONT). These options support extended stays or open-ended plans.

Need to travel to Ontario soon? View current last-minute flight options to ONT for spontaneous or pressing 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.

Fly to Ontario Easily with the Best Airfare Deals on FareLeaders

FAQs on Flights to Ontario (ONT)

Airport Information: Ontario International (ONT)

More Flight Options to Ontario, CA

Why Fareleaders for Flights to ONT