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Flagstaff

$285+ 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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FLG
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheap 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 March 24, 2026.

This American Airlines deal was found by Cheapflights users on 3/21. 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 4/57:59 pm
ONT
-
FLG
1 stop3h 08m
American Airlines
Tue 4/76:21 am
FLG
-
ONT
1 stop5h 13m
American Airlines
Deal found 3/21$406
This American Airlines deal was found by Cheapflights users on 3/24. 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 9/66:17 am
ONT
-
FLG
1 stop3h 40m
American Airlines
Wed 9/910:20 am
FLG
-
ONT
1 stop4h 36m
American Airlines
Deal found 3/24$416
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 9/27:02 pm
ONT
-
FLG
1 stop3h 49m
American Airlines
Wed 9/912:15 pm
FLG
-
ONT
1 stop5h 33m
American Airlines
Deal found 3/24$431
This American Airlines deal was found by Cheapflights users on 3/24. 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 9/76:17 am
ONT
-
FLG
1 stop3h 40m
American Airlines
Wed 9/912:15 pm
FLG
-
ONT
1 stop5h 33m
American Airlines
Deal found 3/24$441
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 9/24:54 pm
ONT
-
FLG
1 stop5h 57m
American Airlines
Sun 9/66:07 pm
FLG
-
ONT
1 stop3h 32m
American Airlines
Deal found 3/24$446
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 9/26:17 am
ONT
-
FLG
1 stop3h 40m
American Airlines
Tue 9/86:07 pm
FLG
-
ONT
1 stop3h 32m
American Airlines
Deal found 3/24$456
This American Airlines deal was found by Cheapflights users on 3/24. 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 9/76:17 am
ONT
-
FLG
1 stop3h 40m
American Airlines
Tue 9/86:07 pm
FLG
-
ONT
1 stop3h 32m
American Airlines
Deal found 3/24$466
This American Airlines deal was found by Cheapflights users on 3/23. 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 5/157:35 pm
ONT
-
FLG
1 stop3h 22m
American Airlines
Sun 5/175:01 pm
FLG
-
ONT
1 stop4h 58m
American Airlines
Deal found 3/23$476
This American Airlines deal was found by Cheapflights users on 3/23. 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 4/57:59 pm
ONT
-
FLG
1 stop3h 08m
American Airlines
Fri 4/105:01 pm
FLG
-
ONT
1 stop4h 58m
American Airlines
Deal found 3/23$486
This American Airlines deal was found by Cheapflights users on 3/24. 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 9/46:17 am
ONT
-
FLG
1 stop3h 40m
American Airlines
Wed 9/912:15 pm
FLG
-
ONT
1 stop5h 33m
American Airlines
Deal found 3/24$491
This American Airlines deal was found by Cheapflights users on 3/23. 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 10/226:47 am
ONT
-
FLG
1 stop4h 13m
American Airlines
Sun 10/251:18 pm
FLG
-
ONT
1 stop4h 29m
American Airlines
Deal found 3/23$496
This American Airlines deal was found by Cheapflights users on 3/24. 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 9/46:17 am
ONT
-
FLG
1 stop3h 40m
American Airlines
Sun 9/66:07 pm
FLG
-
ONT
1 stop3h 32m
American Airlines
Deal found 3/24$506

Find 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 March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$406
(American Airlines)

One-way from

$285
(American Airlines)

Popular in

March

Cheapest in

June

Average price

$545
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. 6% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 24, 2026.
Use the filters below to find and compare flights from Ontario to Flagstaff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 4/5

7:59 pm-11:07 pm

1 stop3h 08m

Flagstaff Pulliam

Tue 4/7

6:21 am-11:34 am

1 stop5h 13m

$406

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Mon 4/20

7:35 pm-10:57 pm

1 stop3h 22m

Flagstaff Pulliam

Mon 4/27

5:01 pm-9:59 pm

1 stop4h 58m

$431

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Wed 9/2

4:54 pm-10:51 pm

1 stop5h 57m

Flagstaff Pulliam

Sun 9/6

6:07 pm-9:39 pm

1 stop3h 32m

$446
Quickest round-trip

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Wed 9/2

6:17 am-9:57 am

1 stop3h 40m

Flagstaff Pulliam

Tue 9/8

6:07 pm-9:39 pm

1 stop3h 32m

$456

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sat 5/16

12:19 pm-4:31 pm

1 stop4h 12m

Flagstaff Pulliam

Sun 5/17

5:01 pm-9:59 pm

1 stop4h 58m

$476

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Fri 5/15

7:35 pm-10:57 pm

1 stop3h 22m

Flagstaff Pulliam

Sun 5/17

5:01 pm-9:59 pm

1 stop4h 58m

$476

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 4/5

7:59 pm-11:07 pm

1 stop3h 08m

Flagstaff Pulliam

Fri 4/10

5:01 pm-9:59 pm

1 stop4h 58m

$486

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 9/6

7:02 pm-10:51 pm

1 stop3h 49m

Flagstaff Pulliam

Mon 9/7

10:30 am-4:24 pm

1 stop5h 54m

$511

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 4/5

5:02 pm-11:07 pm

1 stop6h 05m

Flagstaff Pulliam

Thu 4/9

5:01 pm-9:59 pm

1 stop4h 58m

$536

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sat 9/5

6:17 am-9:57 am

1 stop3h 40m

Flagstaff Pulliam

Sat 9/5

6:07 pm-9:39 pm

1 stop3h 32m

$551

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 16 resultsSorted by cheapest first
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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Flagstaff flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 November is currently the most expensive (average of $273). 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 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 March 24, 2026.
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
7.1
Good
11,491 reviews

Crew

7.9

Food

6.4

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.1
Good
11,491 reviews
American Airlines
7.1
Good
11,491 reviews

Crew

7.9

Food

6.4

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.1

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 08m. 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.. American Airlines is priced at 30% lower than the current average price of a flight leaving 3 months from now.

  • 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 November is currently the most expensive (average of $273). 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
Winslow
Williams

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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 March 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$335Average$465FlexibilityNo cancel feeOn-time71%

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