DEN to ONT

Denver to Ontario flight ticket price

Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.

DEN
Denver (DEN), United StatesDenver International
ONT
Ontario (ONT), United StatesOntario International
Search

Live flights for Sat, 06 Jun 2026

Review fares, stops, timings and baggage. Use Search or View all flights for the complete search result.

Showing flight options for the selected travel date.
Currency: USD
Sat, 06 JunDEN to ONT$614 Sun, 07 JunDEN to ONT Mon, 08 JunDEN to ONT Tue, 09 JunDEN to ONT Wed, 10 JunDEN to ONT Thu, 11 JunDEN to ONT Fri, 12 JunDEN to ONT
Sort By:DepartureDurationArrivalPrice
United Airlines
United Airlines
UA-430
11:20
2026-06-06
Denver (DEN)United StatesDenver International
2H :18 M
Non Stop
12:38
2026-06-06
Ontario (ONT)United StatesOntario International
$614
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-2028
19:24
2026-06-06
Denver (DEN)United StatesDenver International
2H :22 M
Non Stop
20:46
2026-06-06
Ontario (ONT)United StatesOntario International
$614
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-2367
05:20
2026-06-06
Denver (DEN)United StatesDenver International
7H :52 M
1 Stop
SFO · 3h 42mSan Francisco (SFO), United States
12:12
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-694
06:00
2026-06-06
Denver (DEN)United StatesDenver International
7H :12 M
1 Stop
SFO · 3h 02mSan Francisco (SFO), United States
12:12
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
Delta Air Lines
Delta Air Lines
DL-1731
06:05
2026-06-06
Denver (DEN)United StatesDenver International
7H :28 M
1 Stop
SEA · 1h 38mSeattle (SEA), United States
12:33
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-2391
07:40
2026-06-06
Denver (DEN)United StatesDenver International
5H :32 M
1 Stop
SFO · 1h 22mSan Francisco (SFO), United States
12:12
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
Delta Air Lines
Delta Air Lines
DL-1581
07:55
2026-06-06
Denver (DEN)United StatesDenver International
5H :24 M
1 Stop
SLC · 2h 02mSalt Lake City (SLC), United States
12:19
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
Delta Air Lines
Delta Air Lines
DL-1553
12:35
2026-06-06
Denver (DEN)United StatesDenver International
4H :42 M
1 Stop
SLC · 1h 13mSalt Lake City (SLC), United States
16:17
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-1812
13:25
2026-06-06
Denver (DEN)United StatesDenver International
5H :31 M
1 Stop
SFO · 1h 08mSan Francisco (SFO), United States
17:56
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-2633
15:47
2026-06-06
Denver (DEN)United StatesDenver International
8H :03 M
1 Stop
SFO · 3h 43mSan Francisco (SFO), United States
22:50
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-1007
17:54
2026-06-06
Denver (DEN)United StatesDenver International
5H :56 M
1 Stop
SFO · 1h 33mSan Francisco (SFO), United States
22:50
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
Delta Air Lines
Delta Air Lines
DL-2663
18:19
2026-06-06
Denver (DEN)United StatesDenver International
5H :26 M
1 Stop
SLC · 1h 56mSalt Lake City (SLC), United States
22:45
2026-06-06
Ontario (ONT)United StatesOntario International
$624
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
American Airlines
American Airlines
AA-1404
08:08
2026-06-06
Denver (DEN)United StatesDenver International
4H :56 M
1 Stop
PHX · 1h 36mPhoenix (PHX), United States
12:04
2026-06-06
Ontario (ONT)United StatesOntario International
$649
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
American Airlines
American Airlines
AA-1638
18:56
2026-06-06
Denver (DEN)United StatesDenver International
4H :06 M
1 Stop
PHX · 0h 53mPhoenix (PHX), United States
22:02
2026-06-06
Ontario (ONT)United StatesOntario International
$649
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
Alaska Airlines
Alaska Airlines
AS-714
08:00
2026-06-06
Denver (DEN)United StatesDenver International
7H :55 M
1 Stop
PDX · 2h 49mPortland (PDX), United States
14:55
2026-06-06
Ontario (ONT)United StatesOntario International
$684
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
Alaska Airlines
Alaska Airlines
AS-525
09:00
2026-06-06
Denver (DEN)United StatesDenver International
7H :09 M
1 Stop
SEA · 1h 26mSeattle (SEA), United States
15:09
2026-06-06
Ontario (ONT)United StatesOntario International
$684
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
Alaska Airlines
Alaska Airlines
AS-682
12:20
2026-06-06
Denver (DEN)United StatesDenver International
7H :42 M
1 Stop
SEA · 2h 02mSeattle (SEA), United States
19:02
2026-06-06
Ontario (ONT)United StatesOntario International
$684
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
Alaska Airlines
Alaska Airlines
AS-679
17:58
2026-06-06
Denver (DEN)United StatesDenver International
6H :58 M
1 Stop
PDX · 1h 45mPortland (PDX), United States
23:56
2026-06-06
Ontario (ONT)United StatesOntario International
$684
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
American Airlines
American Airlines
AA-2078
06:22
2026-06-06
Denver (DEN)United StatesDenver International
6H :29 M
1 Stop
DFW · 1h 11mDallas (DFW), United States
11:51
2026-06-06
Ontario (ONT)United StatesOntario International
$839
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
American Airlines
American Airlines
AA-1322
18:10
2026-06-06
Denver (DEN)United StatesDenver International
6H :49 M
1 Stop
DFW · 1h 36mDallas (DFW), United States
23:59
2026-06-06
Ontario (ONT)United StatesOntario International
$839
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-5247
08:00
2026-06-06
Denver (DEN)United StatesDenver International
5H :19 M
1 Stop
SLC · 1h 44mSalt Lake City (SLC), United States
12:19
2026-06-06
Ontario (ONT)United StatesOntario International
$940
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
United Airlines
United Airlines
UA-5762
17:45
2026-06-06
Denver (DEN)United StatesDenver International
6H :00 M
1 Stop
SLC · 2h 30mSalt Lake City (SLC), United States
22:45
2026-06-06
Ontario (ONT)United StatesOntario International
$940
total fare
Non Refundable 7 Seat Left Economy
Cabin: Included

Recommended hotels in Ontario

Stay options near the arrival city for the same travel date.

Search hotels
Holiday Inn Ontario
3.0Very GoodLive availability

Holiday Inn Ontario

- 1249 Tapadera Ave 97914 Ontario OR US,

Free WiFiACBreakfast
Room availability is checked live
$184per night+ taxes if applicable

1 Night • 3 Star

Super 8 By Wyndham Ontario
2.0Very GoodLive availability

Super 8 By Wyndham Ontario

- 615 E Idaho Ave, Ontario, OR 97914 ,

Free WiFiACBreakfast
Room availability is checked live
$113per night+ taxes if applicable

1 Night • 2 Star

Motel6 Ontario, OR
2.0Very GoodLive availability

Motel6 Ontario, OR

- 275 Northeast 12th Street 97914 Ontario (OR) Oregon USA,

Free WiFiACBreakfast
Room availability is checked live
$116per night+ taxes if applicable

1 Night • 2 Star

Best Western Inn & Suites
2.0Very GoodLive availability

Best Western Inn & Suites

- 251 Goodfellow St, Ontario, OR 97914 ,

Free WiFiACBreakfast
Room availability is checked live
$216per night+ taxes if applicable

1 Night • 2 Star

United Airlines
United Airlines
UA-1963
11:45
2026-06-06
Denver (DEN)United StatesDenver International
5H :32 M
1 Stop
SLC · 2h 05mSalt Lake City (SLC), United States
16:17
2026-06-06
Ontario (ONT)United StatesOntario International
$1,496
total fare
Non Refundable 9 Seat Left Economy
Cabin: Included
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Fare highlights

Selected flight highlights for 06 Jun 2026.

Open full search
Lowest fare $614 United Airlines 11:20
Earliest departure $624 United Airlines 05:20
Shortest duration $614 United Airlines 11:20
Night 00:00-05:59 $624 United Airlines at 05:20
Morning 06:00-11:59 $614 United Airlines at 11:20
Afternoon 12:00-17:59 $624 Delta Air Lines at 12:35
Evening 18:00-23:59 $614 United Airlines at 19:24

Denver to Ontario route details

Denver (DEN)

Denver International

United States

GMT -7

Latitude: 39.861698150635

Longitude: -104.672996521

Ontario (ONT)

Ontario International

United States

GMT -8

Latitude: 34.055999755859375

Longitude: -117.60099792480469

Distance: Denver (DEN), United States to Ontario (ONT), United States - 1,315.73 km
Flights shown for 06 Jun 2026. View all flights opens the complete search result.

Denver to Ontario - what to expect when booking

The DEN to ONT cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.

Approx route distance: 1,315.73 km.

Before you book

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More flights from Denver (DEN)24 routes
Denver → Akron/canton
DEN → CAK
Denver → Albuquerque
DEN → ABQ
Denver → Amarillo
DEN → AMA
Denver → Anchorage
DEN → ANC
Denver → Aspen
DEN → ASE
Denver → Atlanta
DEN → ATL
Denver → Austin
DEN → AUS
Denver → Bakersfield
DEN → BFL
Denver → Fayetteville
DEN → XNA
Denver → Billings
DEN → BIL
Denver → Birmingham
DEN → BHM
Denver → Bismarck
DEN → BIS
Denver → Bloomington-Normal
DEN → BMI
Denver → Boise
DEN → BOI
Denver → Boston
DEN → BOS
Denver → Bozeman
DEN → BZN
Denver → Burbank
DEN → BUR
Denver → Calgary
DEN → YYC
Denver → Cancun
DEN → CUN
Denver → Casper
DEN → CPR
Denver → Cedar Rapids
DEN → CID
Denver → Charlotte
DEN → CLT
Denver → Cheyenne
DEN → CYS
Denver → Chicago
DEN → ORD
More flights from Ontario (ONT)15 routes
Ontario → Chicago
ONT → MDW
Ontario → Denver
ONT → DEN
Ontario → Dallas
ONT → DFW
Ontario → Guadalajara
ONT → GDL
Ontario → Houston
ONT → IAH
Ontario → Las Vegas
ONT → LAS
Ontario → Oakland
ONT → OAK
Ontario → Phoenix
ONT → PHX
Ontario → Portland
ONT → PDX
Ontario → Sacramento
ONT → SMF
Ontario → Salt Lake City
ONT → SLC
Ontario → San Francisco
ONT → SFO
Ontario → San Jose
ONT → SJC
Ontario → San Juan
ONT → SJU
Ontario → Seattle
ONT → SEA
Frequently asked questions - Denver to Ontario flights
Generally yes. When your travel date is fixed, comparing live fares early gives you better visibility of timings, baggage and fare rules before prices change.
The approximate route distance between Denver (DEN) and Ontario (ONT) is 1,315.73 km. Actual flying distance can vary by airline routing.
Availability changes by airline schedule and date. Use the Stops filter to quickly check non-stop, one-stop and connecting options on this landing page.
Airline inventory can change within minutes. Book Now sends the selected result to the review flow where the fare is checked again before final booking.
Yes. The date strip and search box open the full search for the selected date, while this page keeps the route details easy to compare.