HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$134+ Cheap flights from Montrose to Ontario (MTJ - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
MTJ — ONT
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Montrose to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Montrose to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Montrose (MTJ) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 14, 2025.

Round-trip from

$323
(United Airlines)

One-way from

$134
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$368
From Montrose County to Ontario
Search Deals
One-way flight from Montrose County to Ontario
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Montrose to Ontario

Cheapest flights from Montrose to Ontario
Explore the most affordable flight options available from Montrose to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:45 pmMTJ - ONT
1 stop4h 38mUnited Airlines
Wed 10/85:05 amONT - MTJ
1 stop6h 41mUnited Airlines
Deal found 9/12$323
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:45 pmMTJ - ONT
1 stop4h 38mUnited Airlines
Mon 10/65:05 amONT - MTJ
1 stop6h 41mUnited Airlines
Deal found 9/12$379
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/261:45 pmMTJ - ONT
1 stop4h 38mUnited Airlines
Sun 9/285:05 amONT - MTJ
1 stop6h 41mUnited Airlines
Deal found 9/13$441
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:15 amMTJ - ONT
1 stop6h 18mUnited Airlines
Sun 11/235:05 amONT - MTJ
1 stop6h 24mUnited Airlines
Deal found 9/14$477
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/203:24 pmMTJ - ONT
1 stop6h 19mUnited Airlines
Mon 9/225:10 amONT - MTJ
1 stop6h 37mUnited Airlines
Deal found 9/12$491

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montrose to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 14, 2025.
Use the filters below to find and compare flights from Montrose to Ontario that are best for you.

Fly from

Montrose

Fly to

Ontario

Route

Depart

Return

Price

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Fri 10/3

1:45 pm-5:23 pm

1 stop4h 38m

Ontario

Wed 10/8

5:05 am-12:46 pm

1 stop6h 41m

$323

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Fri 2/6

3:28 pm-8:58 pm

1 stop6h 30m

Ontario

Sat 2/14

5:40 am-8:08 pm

1 stop13h 28m

$325

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Fri 1/30

3:28 pm-8:58 pm

1 stop6h 30m

Ontario

Sat 2/7

1:20 pm-12:30 pm

1 stop22h 10m

$341

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Fri 10/3

1:45 pm-5:23 pm

1 stop4h 38m

Ontario

Mon 10/6

5:05 am-12:46 pm

1 stop6h 41m

$379

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Mon 11/3

1:30 pm-10:51 pm

2 stops10h 21m

Ontario

Wed 11/5

5:05 am-12:29 pm

1 stop6h 24m

$400

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Sat 2/21

1:35 pm-9:19 pm

1 stop8h 44m

Ontario

Tue 2/24

5:40 am-12:45 pm

1 stop6h 05m

$427

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Tue 1/27

7:00 am-12:47 pm

1 stop6h 47m

$134

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Sat 1/24

4:05 pm-10:53 pm

1 stop7h 48m

$141

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Sat 1/24

2:43 pm-10:02 pm

1 stop8h 19m

$149

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

Mon 1/26

3:28 pm-8:58 pm

1 stop6h 30m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 15 results
1
2

Best time to book a flight from Montrose to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Montrose with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montrose to Ontario

What is the cheapest month to book a flight from Montrose to Ontario?

Currently, August is the cheapest month in which you can book a flight from Montrose to Ontario (average of $246). Flying from Montrose to Ontario in March is currently the most expensive (average of $328). 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.

Related info for your journey

Find useful and relevant information for your journey from Montrose to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montrose to Ontario?

    Departing from Montrose to Ontario will take you 4h 38m. Airlines will cover a distance of 621 mi.

  • Can I find deals for flights from Montrose to Ontario that include hotel bookings?

    Yes. In addition to deals on Montrose to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montrose to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montrose to Ontario.

  • Can I find deals for business class flights from Montrose to Ontario?

    Yes. Cheapflights offers flight deals from Montrose to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montrose to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Montrose to Ontario (average of $246). Flying from Montrose to Ontario in March is currently the most expensive (average of $328). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Montrose to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Denver to Las Vegas flights
Denver to Los Angeles flights
Denver to San Francisco flights
Denver to San Diego flights
Denver to Ontario flights
Denver to Santa Ana flights
Denver to Palm Springs flights
Denver to San Jose flights
Denver to Sacramento flights
Colorado Springs to Las Vegas flights
Denver to Burbank flights
Denver to Reno flights
Colorado Springs to Los Angeles flights
Denver to Fresno flights
Denver to Santa Barbara flights
Denver to San Luis Obispo flights
Denver to Long Beach flights
Denver to Oakland flights
Denver to Monterey flights
Grand Junction to San Diego flights
Grand Junction to Los Angeles flights
Colorado Springs to Ontario flights
Denver to Bakersfield flights
Colorado Springs to San Diego flights
Colorado Springs to Santa Ana flights
Colorado Springs to Burbank flights
Durango to Las Vegas flights
Montrose to Los Angeles flights
Vail to Los Angeles flights
Denver to Medford flights
Denver to Arcata flights
Grand Junction to San Francisco flights
Grand Junction to Las Vegas flights
Denver to Santa Rosa flights
Colorado Springs to Palm Springs flights
Colorado Springs to San Francisco flights
Montrose to San Jose flights
Durango to San Diego flights
Grand Junction to Ontario flights
Colorado Springs to Long Beach flights
Colorado Springs to San Jose flights
Montrose to Las Vegas flights
Aspen to Los Angeles flights
Grand Junction to Santa Ana flights
Durango to Los Angeles flights
Montrose to San Francisco flights
Vail to Las Vegas flights
Grand Junction to Sacramento flights
Colorado Springs to Sacramento flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.