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$139+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
MTJ — ONT
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
1 adult, Economy
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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 julio 29, 2025.

Round-trip from

$277
(United Airlines)

One-way from

$139
(United Airlines)

Popular in

November

Cheapest in

September

Average price

$348
From Montrose County to Ontario
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One-way flight from Montrose County to Ontario
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Highest demand for flights based on searches. 14% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 julio 29, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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.
vie. 8/293:24 pmMTJ - ONT
1 stop6h 19mUnited Airlines
dom. 9/75:10 amONT - MTJ
1 stop6h 37mUnited Airlines
Deal found 7/28$277
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/3010:42 amMTJ - ONT
1 stop8h 42mAmerican Airlines
mié. 9/36:10 amONT - MTJ
1 stop6h 22mAmerican Airlines
Deal found 7/28$281

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 julio 29, 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

vie. 8/29

3:24 pm-8:43 pm

1 stop6h 19m

Ontario

dom. 9/7

5:10 am-12:47 pm

1 stop6h 37m

$277

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

sáb. 8/30

10:42 am-6:24 pm

1 stop8h 42m

Ontario

mié. 9/3

6:10 am-1:32 pm

1 stop6h 22m

$281

MontroseOntario

MTJ - ONT

MTJONT

Montrose County

jue. 8/28

7:30 am-12:32 pm

1 stop6h 02m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated julio 29, 2025.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Montrose to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,896 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,896 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

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.

  • What are the cheapest airlines flying from Montrose to Ontario round-trip?

    Our cheapest airline available from Montrose to Ontario is United Airlines. Our recent data shows that you can find tickets from as low as $277 on this airline. An additional option worth looking into is American Airlines, starting at $281.

  • 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.

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Alternative routes for Montrose to Ontario

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Top airline flying from Montrose to Ontario

Discover the top airline that operate flights from Montrose to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$306Average$405FlexibilityNo cancel feeOn-time69%

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