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Flagstaff

$215+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FLG
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/30. 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 11/1412:55 pmONT - FLG
1 stop4h 40mAmerican Airlines
Tue 11/1812:50 pmFLG - ONT
1 stop4h 13mAmerican Airlines
Deal found 10/30$466
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 11/1012:55 pmONT - FLG
1 stop4h 40mAmerican Airlines
Wed 11/1212:50 pmFLG - ONT
1 stop4h 11mAmerican Airlines
Deal found 10/29$471
This American Airlines deal was found by Cheapflights users on 10/30. 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 12/184:44 pmONT - FLG
1 stop6h 08mAmerican Airlines
Tue 12/231:10 pmFLG - ONT
1 stop3h 40mAmerican Airlines
Deal found 10/30$481
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/146:01 amONT - FLG
1 stop5h 59mAmerican Airlines
Sun 11/164:04 pmFLG - ONT
1 stop3h 16mAmerican Airlines
Deal found 10/29$486
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 11/1012:55 pmONT - FLG
1 stop4h 40mAmerican Airlines
Mon 11/174:04 pmFLG - ONT
1 stop3h 16mAmerican Airlines
Deal found 10/29$491
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/212:55 pmONT - FLG
1 stop4h 40mAmerican Airlines
Wed 11/54:04 pmFLG - ONT
1 stop3h 16mAmerican Airlines
Deal found 10/29$571
This American Airlines deal was found by Cheapflights users on 10/30. 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 11/712:55 pmONT - FLG
1 stop4h 40mAmerican Airlines
Sun 11/912:20 pmFLG - ONT
1 stop4h 41mAmerican Airlines
Deal found 10/30$596
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/11:00 pmONT - FLG
1 stop4h 50mAmerican Airlines
Wed 11/54:04 pmFLG - ONT
1 stop3h 16mAmerican Airlines
Deal found 10/29$621
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/212:55 pmONT - FLG
1 stop4h 40mAmerican Airlines
Tue 11/44:04 pmFLG - ONT
1 stop3h 16mAmerican Airlines
Deal found 10/29$646
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 11/39:59 amONT - FLG
1 stop4h 35mAmerican Airlines
Mon 11/37:05 pmFLG - ONT
1 stop3h 54mAmerican Airlines
Deal found 10/29$690
This American Airlines deal was found by Cheapflights users on 10/29. 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 11/11:00 pmONT - FLG
1 stop4h 50mAmerican Airlines
Tue 11/44:04 pmFLG - ONT
1 stop3h 16mAmerican Airlines
Deal found 10/29$696

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$356
(American Airlines)

One-way from

$215
(American Airlines)

Popular in

November

Cheapest in

February

Average price

$395
Provider with most accurate pricing for Ontario-Flagstaff Pulliam flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Flagstaff Pulliam flights.
Search Deals
From Ontario to Flagstaff Pulliam
Search Deals
One-way flight from Ontario to Flagstaff Pulliam
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($43 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 October 2025
Search Deals

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 October 30, 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

Thu 1/22

6:22 am-12:08 pm

1 stop4h 46m

Flagstaff Pulliam

Thu 1/22

6:05 pm-10:13 pm

1 stop5h 08m

$356

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Fri 1/23

12:57 pm-5:32 pm

1 stop3h 35m

Flagstaff Pulliam

Sun 1/25

6:05 pm-10:13 pm

1 stop5h 08m

$406

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Fri 11/14

12:55 pm-6:35 pm

1 stop4h 40m

Flagstaff Pulliam

Tue 11/18

12:50 pm-4:03 pm

1 stop4h 13m

$466

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sat 12/20

4:44 pm-11:52 pm

1 stop6h 08m

Flagstaff Pulliam

Sun 12/21

1:10 pm-6:28 pm

1 stop6h 18m

$466

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Mon 11/10

12:55 pm-6:35 pm

1 stop4h 40m

Flagstaff Pulliam

Wed 11/12

12:50 pm-4:01 pm

1 stop4h 11m

$471

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Thu 12/18

4:44 pm-11:52 pm

1 stop6h 08m

Flagstaff Pulliam

Tue 12/23

1:10 pm-3:50 pm

1 stop3h 40m

$481

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Fri 11/14

6:01 am-1:00 pm

1 stop5h 59m

Flagstaff Pulliam

Sun 11/16

4:04 pm-6:20 pm

1 stop3h 16m

$486

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Mon 11/10

12:55 pm-6:35 pm

1 stop4h 40m

Flagstaff Pulliam

Mon 11/17

4:04 pm-6:20 pm

1 stop3h 16m

$491

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Mon 11/3

9:59 am-3:34 pm

1 stop4h 35m

Flagstaff Pulliam

Wed 11/5

4:04 pm-6:20 pm

1 stop3h 16m

$571

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 11/2

12:55 pm-6:35 pm

1 stop4h 40m

Flagstaff Pulliam

Wed 11/5

4:04 pm-6:20 pm

1 stop3h 16m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 18 results
1
2

Compare providers for flights from Ontario to Flagstaff

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Flagstaff in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Flagstaff flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Flagstaff flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Flagstaff flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Flagstaff flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Flagstaff flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, September is the cheapest month in which you can book a flight from Ontario to Flagstaff (average of $133). Flying from Ontario to Flagstaff in August is currently the most expensive (average of $253). 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 October 30, 2025.

It’s typically best to fly out from Ontario to Flagstaff at noon. Doing so could potentially save you 23% on the flight price compared to flying in the evening, 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 October 30, 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
11,034 reviews

Comfort

7.2

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.5

Food

6.4

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
11,034 reviews
American Airlines
7.2
Good
11,034 reviews

Comfort

7.2

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.5

Food

6.4

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 4h 46m. 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, September is the cheapest month in which you can book a flight from Ontario to Flagstaff (average of $133). Flying from Ontario to Flagstaff in August is currently the most expensive (average of $253). 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$335Average$495FlexibilityNo cancel feeOn-time71%

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