$355+ 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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FLG
Oct 30 — Nov 61
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Flagstaff with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Flagstaff
Cheapest
Best
Last-minute
One-way
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 September 30, 2026.
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 30, 2026.
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 12/237:36 pm -
1 stop3h 20m
Sat 12/266:43 am -
1 stop3h 02m
Deal found 9/29![American Airlines logo]()
$494
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Tue 10/134:29 pm -
1 stop4h 10m
Mon 10/1911:52 am -
1 stop3h 24m
Deal found 9/29![American Airlines logo]()
$556
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Thu 10/86:15 am -
1 stop5h 01m
Sun 10/116:15 am -
1 stop5h 59m
Deal found 9/29![American Airlines logo]()
$586
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/174:29 pm -
1 stop4h 10m
Wed 10/216:20 pm -
1 stop4h 33m
Deal found 9/29![American Airlines logo]()
$616
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/161:05 pm -
1 stop4h 39m
Tue 10/206:15 am -
1 stop5h 59m
Deal found 9/29![American Airlines logo]()
$627
This American Airlines deal was found by Cheapflights users on 9/27. 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 12/287:36 pm -
1 stop47h 55m
Sat 1/211:30 am -
1 stop50h 11m
Deal found 9/27![American Airlines logo]()
$697
This American Airlines deal was found by Cheapflights users on 9/29. 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 11/26:30 am -
1 stop3h 15m
Thu 11/57:05 pm -
1 stop42h 33m
Deal found 9/29![American Airlines logo]()
$726
This American Airlines deal was found by Cheapflights users on 9/27. 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.
Tue 9/296:15 am -
1 stop4h 58m
Thu 10/16:49 am -
1 stop5h 17m
Deal found 9/27![American Airlines logo]()
$738
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/121:05 pm -
1 stop4h 39m
Fri 10/1611:52 am -
1 stop3h 24m
Deal found 9/27![American Airlines logo]()
$770
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/36:15 am -
1 stop3h 52m
Sat 10/35:14 pm -
1 stop29h 29m
Deal found 9/27![American Airlines logo]()
$932
Best flights from Ontario to FlagstaffDiscover 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 September 30, 2026.
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 September 30, 2026.
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 12/237:36 pm -
1 stop3h 20m
Sat 12/266:43 am -
1 stop3h 02m
Deal found 9/29![American Airlines logo]()
$494
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Tue 10/134:29 pm -
1 stop4h 10m
Mon 10/1911:52 am -
1 stop3h 24m
Deal found 9/29![American Airlines logo]()
$556
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/166:15 am -
1 stop3h 49m
Sun 10/1810:34 am -
1 stop4h 42m
Deal found 9/27![American Airlines logo]()
$586
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/174:29 pm -
1 stop4h 10m
Wed 10/216:20 pm -
1 stop4h 33m
Deal found 9/29![American Airlines logo]()
$616
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/166:15 am -
1 stop3h 49m
Wed 10/2110:34 am -
1 stop4h 42m
Deal found 9/29![American Airlines logo]()
$627
This American Airlines deal was found by Cheapflights users on 9/27. 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 12/287:36 pm -
1 stop47h 55m
Sat 1/211:30 am -
1 stop50h 11m
Deal found 9/27![American Airlines logo]()
$697
This American Airlines deal was found by Cheapflights users on 9/29. 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 11/26:30 am -
1 stop3h 15m
Thu 11/57:05 pm -
1 stop42h 33m
Deal found 9/29![American Airlines logo]()
$726
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/121:05 pm -
1 stop4h 39m
Fri 10/1611:52 am -
1 stop3h 24m
Deal found 9/27![American Airlines logo]()
$770
Last-minute flights from Ontario to FlagstaffDiscover last-minute flight deals from Ontario to Flagstaff. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Flagstaff. Data last updated September 30, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/36:15 am -
1 stop3h 52m
Sat 10/35:14 pm -
1 stop29h 29m
Deal found 9/27![American Airlines logo]()
$932
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Thu 10/86:15 am -
1 stop5h 01m
Sun 10/116:15 am -
1 stop5h 59m
Deal found 9/29![American Airlines logo]()
$586
This American Airlines deal was found by Cheapflights users on 9/27. 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 10/121:05 pm -
1 stop4h 39m
Fri 10/1611:52 am -
1 stop3h 24m
Deal found 9/27![American Airlines logo]()
$770
This American Airlines deal was found by Cheapflights users on 9/29. 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.
Tue 10/134:29 pm -
1 stop4h 10m
Mon 10/1911:52 am -
1 stop3h 24m
Deal found 9/29![American Airlines logo]()
$556
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/161:05 pm -
1 stop4h 39m
Tue 10/206:15 am -
1 stop5h 59m
Deal found 9/29![American Airlines logo]()
$627
This American Airlines deal was found by Cheapflights users on 9/29. 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 10/174:29 pm -
1 stop4h 10m
Wed 10/216:20 pm -
1 stop4h 33m
Deal found 9/29![American Airlines logo]()
$616
One-way flights from Ontario to FlagstaffSearch for one-way flight options from Ontario to Flagstaff. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
Search for one-way flight options from Ontario to Flagstaff. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
This American Airlines deal was found by Cheapflights users on 9/30. 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.
Sat 10/176:15 am -
1 stop5h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![American Airlines logo]()
$355
This Alaska Airlines deal was found by Cheapflights users on 9/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:30 pm -
2 stops27h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Alaska Airlines logo]()
$517
This Alaska Airlines deal was found by Cheapflights users on 9/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:56 pm -
2 stops25h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Alaska Airlines logo]()
$601
This Alaska Airlines deal was found by Cheapflights users on 9/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/172:13 pm -
2 stops31h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Alaska Airlines logo]()
$632
This Alaska Airlines deal was found by Cheapflights users on 9/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2610:41 am -
2 stops30h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Alaska Airlines logo]()
$834
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 September 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $494 (American Airlines) |
One-way from | $355 (American Airlines) |
Popular in | May |
Cheapest in | December |
Average price | $597 |
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 7,457,451 searches. Data last updated September 30, 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
Cheapest round-trip
Quickest round-trip
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Sat 10/17
6:15 am-11:16 am
1 stop5h 01m
Flagstaff Pulliam
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$355
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Wed 12/23
7:36 pm-11:56 pm
1 stop3h 20m
Flagstaff Pulliam
Sat 12/26
6:43 am-8:45 am
1 stop3h 02m
$494
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Fri 10/23
5:30 pm-8:39 pm
2 stops27h 09m
Flagstaff Pulliam
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$517
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Tue 10/13
4:29 pm-8:39 pm
1 stop4h 10m
Flagstaff Pulliam
Mon 10/19
11:52 am-3:16 pm
1 stop3h 24m
$556
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Fri 10/16
6:15 am-10:04 am
1 stop3h 49m
Flagstaff Pulliam
Sun 10/18
10:34 am-3:16 pm
1 stop4h 42m
$586
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Fri 10/16
6:56 pm-8:39 pm
2 stops25h 43m
Flagstaff Pulliam
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$601
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Sat 10/17
4:29 pm-8:39 pm
1 stop4h 10m
Flagstaff Pulliam
Wed 10/21
6:20 pm-10:53 pm
1 stop4h 33m
$616
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Fri 10/16
6:15 am-10:04 am
1 stop3h 49m
Flagstaff Pulliam
Wed 10/21
10:34 am-3:16 pm
1 stop4h 42m
$627
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Sat 10/17
2:13 pm-9:23 pm
2 stops31h 10m
Flagstaff Pulliam
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$632
OntarioFlagstaff
ONT Ontario - FLG Flagstaff Pulliam
ONTFLG
Ontario
Mon 12/28
7:36 pm-8:31 pm
1 stop47h 55m
Flagstaff Pulliam
Sat 1/2
11:30 am-12:41 pm
1 stop50h 11m
$697
Showing 1-10 of 13 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
ONT-FLG
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.
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 30, 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.
Entertainment
6.8
Overall
7.0
Boarding
7.4
Crew
7.9
Food
6.4
Comfort
7.2
Reviews
1 / 20
6.0
GoodKristin,Jul 2026
DCA - PHX
Entertainment
6.8
Overall
7.0
Boarding
7.4
Crew
7.9
Food
6.4
Comfort
7.2
Reviews
1 / 20
6.0
GoodKristin,Jul 2026
DCA - PHX
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.
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Ontario and Flagstaff flights
Browse other Ontario and Flagstaff flight options. Last updated on September 30, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on September 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$305 | Average$465 | FlexibilityNo cancel fee | On-time71% |