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Flagstaff

$315+ Cheap flights from Ontario to Flagstaff (ONT - FLG)

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FLG
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Ontario to Flagstaff

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Flagstaff (FLG). 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 16, 2025.

Round-trip from

$366
(American Airlines)

One-way from

$315
(American Airlines)

Popular in

September

Cheapest in

February

Average price

$682
From Ontario to Flagstaff Pulliam
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One-way flight from Ontario to Flagstaff Pulliam
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Highest demand for flights based on searches. 13% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Flagstaff

Cheapest flights from Ontario to Flagstaff
Explore the most affordable flight options available from Ontario to Flagstaff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:10 amONT - FLG
1 stop3h 48mAmerican Airlines
Thu 10/27:47 amFLG - ONT
1 stop4h 09mAmerican Airlines
Deal found 9/14$366
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 10/256:15 amONT - FLG
1 stop3h 31mAmerican Airlines
Sun 10/266:20 pmFLG - ONT
1 stop3h 29mAmerican Airlines
Deal found 9/15$406
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/97:27 pmONT - FLG
1 stop3h 27mAmerican Airlines
Sun 10/128:00 amFLG - ONT
1 stop4h 01mAmerican Airlines
Deal found 9/15$408
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sun 9/287:16 pmONT - FLG
1 stop3h 05mAmerican Airlines
Wed 10/110:38 amFLG - ONT
1 stop5h 27mAmerican Airlines
Deal found 9/15$446
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 12/198:02 pmONT - FLG
1 stop2h 50mAmerican Airlines
Mon 12/224:05 pmFLG - ONT
1 stop3h 23mAmerican Airlines
Deal found 9/15$526
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/147:16 pmONT - FLG
1 stop3h 05mAmerican Airlines
Thu 9/187:47 amFLG - ONT
1 stop4h 09mAmerican Airlines
Deal found 9/13$616

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Flagstaff 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 16, 2025.
Use the filters below to find and compare flights from Ontario to Flagstaff that are best for you.

Fly from

Ontario

Fly to

Flagstaff

Route

Depart

Return

Price

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 9/28

6:10 am-9:58 am

1 stop3h 48m

Flagstaff Pulliam

Thu 10/2

7:47 am-11:56 am

1 stop4h 09m

$366

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sat 10/25

6:15 am-9:46 am

1 stop3h 31m

Flagstaff Pulliam

Sun 10/26

6:20 pm-9:49 pm

1 stop3h 29m

$406

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Thu 11/13

6:11 am-12:30 pm

1 stop5h 19m

Flagstaff Pulliam

Mon 11/17

7:05 pm-9:59 pm

1 stop3h 54m

$406

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Thu 10/9

7:27 pm-10:54 pm

1 stop3h 27m

Flagstaff Pulliam

Sun 10/12

8:00 am-12:01 pm

1 stop4h 01m

$408

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 9/28

7:16 pm-10:21 pm

1 stop3h 05m

Flagstaff Pulliam

Wed 10/1

10:38 am-4:05 pm

1 stop5h 27m

$446

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Thu 9/25

6:10 am-9:58 am

1 stop3h 48m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Ontario to Flagstaff

Have a flexible travel schedule? Discover the best time to fly to Flagstaff from Ontario 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 Ontario to Flagstaff

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Flagstaff (average of $496). Flying from Ontario to Flagstaff in March is currently the most expensive (average of $655). 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.

What is the cheapest time of day to fly from ONT to FLG?

Find hourly flight availability from Ontario to Flagstaff. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s typically best to fly out from Ontario to Flagstaff in the morning. Doing so could potentially save you 3% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Flagstaff

Get insights into the airlines that provide service to Flagstaff. 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 Flagstaff. Reviews last updated September 16, 2025.
See what other customers who have flown with American Airlines from Ontario to Flagstaff have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Food

6.4

Entertainment

6.9

Comfort

7.2

Overall

7.2

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Crew

8.0

Food

6.4

Entertainment

6.9

Comfort

7.2

Overall

7.2

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Ontario to Flagstaff. 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 Ontario to Flagstaff?

    There are many flights that can get you from Ontario to Flagstaff in 3h 48m. Fly via American Airlines to get the fastest option. The distance between Ontario and Flagstaff is about 345 mi.

  • What is the cheapest airline to fly from Ontario to Flagstaff round-trip?

    American Airlines, at $335, was found to be the cheapest airline from Ontario to Flagstaff..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Flagstaff 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 Ontario to Flagstaff?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Flagstaff (average of $496). Flying from Ontario to Flagstaff in March is currently the most expensive (average of $655). 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

Traveling to a place near Flagstaff?

Book flights to Flagstaff if you plan to visit one of these locations
Williams
Winslow

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Top airline flying from Ontario to Flagstaff

Discover the top airline that operate flights from Ontario to Flagstaff. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$335Average$535FlexibilityNo cancel feeOn-time71%

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