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

American Airlines, at $286, was found to be the cheapest airline from Ontario to Flagstaff..

What is the cheapest day to fly from Ontario to Flagstaff?

Travelers seeking maximum savings on their Ontario to Flagstaff flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Flagstaff ranges from 0.4 - 2.7 inches per month. August is typically the wettest month, when rainfall can reach 2.7 in. June is typically the driest time to visit Flagstaff when rainfall is around 0.4 in.

If weather is an important factor for your trip to Flagstaff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 50% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from Ontario to Flagstaff?

Our data shows that February tends to be the cheapest month to fly to Flagstaff from Ontario. Users have commonly found prices around $506 for the month, but tickets can be as low as $301. Due to multiple factors, prepare for potentially higher prices in September.

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.

$286+ Flights from Ontario to Flagstaff

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Cheap flight deals from Ontario to Flagstaff

Round-trip from	$286 (American Airlines)
One-way from	$175 (American Airlines)
Popular in	September
Cheapest in	February
Average price	$445

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. 12% potential increase in price ($71 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($11 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 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 July 31, 2025.

Tue 10/146:15 amONT - FLG

1 stop3h 36mAmerican Airlines

Wed 10/221:18 pmFLG - ONT

1 stop5h 17mAmerican Airlines

Deal found 7/31

$286

Best flights from Ontario to Flagstaff
Discover carefully curated flight deals from Ontario to Flagstaff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Tue 10/146:15 amONT - FLG

1 stop3h 36mAmerican Airlines

Wed 10/221:18 pmFLG - ONT

1 stop5h 17mAmerican Airlines

Deal found 7/31

$286

Last-minute flights from Ontario to Flagstaff
Discover last-minute flight deals from Ontario to Flagstaff. Data last updated July 31, 2025 and is based on user searches.

Tue 8/512:55 pmONT - FLG

1 stop4h 39mAmerican Airlines

Tue 8/1910:30 amFLG - ONT

1 stop5h 54mAmerican Airlines

Deal found 7/31

$501

Thu 8/217:02 pmONT - FLG

1 stop3h 50mAmerican Airlines

Sun 8/246:07 pmFLG - ONT

1 stop3h 32mAmerican Airlines

Deal found 7/30

$441

One-way flights from Ontario to Flagstaff
Search for one-way flight options from Ontario to Flagstaff. Find affordable one-way fares based on user searches. Data last updated July 31, 2025.

Sun 8/312:55 pmONT - FLG

1 stop4h 39mAmerican Airlines

Deal found 7/30

$330

Fly from

Fly to

Route

Depart

Return

Price

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Tue 10/14

6:15 am-9:51 am

1 stop3h 36m

Flagstaff Pulliam

Wed 10/22

1:18 pm-6:35 pm

1 stop5h 17m

$286

OntarioFlagstaff

ONT - FLG

ONTFLG

Ontario

Sun 8/3

12:55 pm-5:34 pm

1 stop4h 39m

$330

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, July is the cheapest month in which you can book a flight from Ontario to Flagstaff (average of $537). Flying from Ontario to Flagstaff in March is currently the most expensive (average of $659). 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?

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

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

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

Related info for your journey

What is the cheapest airline to fly from Ontario to Flagstaff round-trip?
American Airlines, at $286, 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, July is the cheapest month in which you can book a flight from Ontario to Flagstaff (average of $537). Flying from Ontario to Flagstaff in March is currently the most expensive (average of $659). 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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Top airline flying from Ontario to Flagstaff

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$363	Average$545	FlexibilityNo cancel fee	On-time71%

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$286+ Cheap flights from Ontario to Flagstaff (ONT - FLG)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Flagstaff with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Flagstaff

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Flagstaff

Cheapest flights from Ontario to FlagstaffExplore 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 July 31, 2025.

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 July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Flagstaff that are best for you.

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.

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?

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 July 31, 2025.

Reviews of airlines servicing Flagstaff

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.

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.

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

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

How can I find direct flights from Ontario to Flagstaff?

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

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

Traveling to a place near Flagstaff?

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Alternative routes for Ontario to Flagstaff

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Top airline flying from Ontario to Flagstaff

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Travel Smart

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 July 31, 2025.