$149+ Cheap flights from Ontario to Billings (ONT - BIL)
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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIL
Apr 12 — Apr 191
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Billings 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 Billings
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Best
Last-minute
One-way
Cheapest flights from Ontario to BillingsExplore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
Explore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/111:34 pm
ONT
- BIL
1 stop6h 23m
United Airlines
Sat 4/187:00 am
BIL
- ONT
1 stop6h 38m
United Airlines
Deal found 3/12![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
ONT
- BIL
1 stop3h 53m
Delta
Sun 4/266:18 pm
BIL
- ONT
1 stop6h 26m
Delta
Deal found 3/11![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 am
ONT
- BIL
1 stop3h 53m
Delta
Sat 4/186:18 pm
BIL
- ONT
1 stop5h 25m
Delta
Deal found 3/13![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:05 pm
ONT
- BIL
1 stop4h 27m
Delta
Mon 12/286:25 pm
BIL
- ONT
1 stop6h 23m
Delta
Deal found 3/10![Delta logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 4/710:33 am
ONT
- BIL
1 stop12h 25m
Alaska Airlines
Tue 4/142:05 pm
BIL
- ONT
1 stop10h 54m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$304
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/297:00 am
ONT
- BIL
1 stop5h 26m
Alaska Airlines
Sat 5/212:47 pm
BIL
- ONT
1 stop12h 01m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/69:02 pm
ONT
- BIL
2 stops39h 49m
Multiple Airlines
Mon 4/1310:34 am
BIL
- ONT
1 stop25h 10m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:09 pm
ONT
- BIL
1 stop4h 20m
Delta
Mon 4/136:18 pm
BIL
- ONT
1 stop6h 26m
Delta
Deal found 3/9![Delta logo]()
$340
This Travelocity deal was found by Cheapflights users on 3/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:00 am
ONT
- BIL
1 stop7h 03m
Alaska Airlines
Sun 6/286:00 am
BIL
- ONT
1 stop6h 14m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
ONT
- BIL
1 stop3h 54m
Delta
Mon 5/255:35 am
BIL
- ONT
1 stop4h 18m
Delta
Deal found 3/12![Delta logo]()
$351
Best flights from Ontario to BillingsDiscover carefully curated flight deals from Ontario to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
Discover carefully curated flight deals from Ontario to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
ONT
- BIL
1 stop3h 53m
Delta
Sun 4/266:18 pm
BIL
- ONT
1 stop6h 26m
Delta
Deal found 3/11![Delta logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 4/710:33 am
ONT
- BIL
1 stop12h 25m
Alaska Airlines
Tue 4/142:05 pm
BIL
- ONT
1 stop10h 54m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/69:02 pm
ONT
- BIL
2 stops39h 49m
Multiple Airlines
Mon 4/1310:34 am
BIL
- ONT
1 stop25h 10m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$328
This United Airlines deal was found by Cheapflights users on 3/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:10 am
ONT
- BIL
1 stop7h 13m
United Airlines
Sat 5/25:05 am
BIL
- ONT
2 stops8h 17m
United Airlines
Deal found 3/10![United Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 am
ONT
- BIL
1 stop3h 53m
Delta
Sat 4/186:18 pm
BIL
- ONT
1 stop5h 25m
Delta
Deal found 3/13![Delta logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/297:00 am
ONT
- BIL
1 stop5h 26m
Alaska Airlines
Sat 5/212:47 pm
BIL
- ONT
1 stop12h 01m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$323
Last-minute flights from Ontario to BillingsDiscover last-minute flight deals from Ontario to Billings. Data last updated March 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Billings. Data last updated March 13, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/69:02 pm
ONT
- BIL
2 stops39h 49m
Multiple Airlines
Mon 4/1310:34 am
BIL
- ONT
1 stop25h 10m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:09 pm
ONT
- BIL
1 stop4h 20m
Delta
Mon 4/136:18 pm
BIL
- ONT
1 stop6h 26m
Delta
Deal found 3/9![Delta logo]()
$340
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 4/710:33 am
ONT
- BIL
1 stop12h 25m
Alaska Airlines
Tue 4/142:05 pm
BIL
- ONT
1 stop10h 54m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:09 pm
ONT
- BIL
1 stop4h 20m
Delta
Fri 4/176:18 pm
BIL
- ONT
1 stop6h 26m
Delta
Deal found 3/11![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/111:34 pm
ONT
- BIL
1 stop6h 23m
United Airlines
Sat 4/187:00 am
BIL
- ONT
1 stop6h 38m
United Airlines
Deal found 3/12![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 am
ONT
- BIL
1 stop3h 53m
Delta
Sat 4/186:18 pm
BIL
- ONT
1 stop5h 25m
Delta
Deal found 3/13![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:00 am
ONT
- BIL
1 stop3h 53m
Delta
Sun 4/266:18 pm
BIL
- ONT
1 stop6h 26m
Delta
Deal found 3/11![Delta logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/297:00 am
ONT
- BIL
1 stop5h 26m
Alaska Airlines
Sat 5/212:47 pm
BIL
- ONT
1 stop12h 01m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$323
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:38 pm
ONT
- BIL
1 stop7h 27m
United Airlines
Sat 5/22:30 pm
BIL
- ONT
2 stops9h 29m
United Airlines
Deal found 3/12![United Airlines logo]()
$352
One-way flights from Ontario to BillingsSearch for one-way flight options from Ontario to Billings. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
Search for one-way flight options from Ontario to Billings. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:00 am
ONT
- BIL
1 stop3h 53m
Delta
Deal found 3/12![Delta logo]()
$149
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:09 pm
ONT
- BIL
1 stop4h 20m
Delta
Deal found 3/12![Delta logo]()
$191
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 4/77:08 pm
ONT
- BIL
1 stop27h 50m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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.
Sun 6/217:00 am
ONT
- BIL
1 stop7h 03m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$210
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:09 pm
ONT
- BIL
1 stop4h 20m
Delta
Deal found 3/9![Delta logo]()
$231
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:27 pm
ONT
- BIL
2 stops22h 56m
United Airlines
Deal found 3/12![United Airlines logo]()
$235
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Wed 4/17:00 am
ONT
- BIL
1 stop5h 25m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 3/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/205:09 pm
ONT
- BIL
1 stop4h 20m
Delta
Deal found 3/9![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 3/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/201:50 pm
ONT
- BIL
1 stop6h 17m
United Airlines
Deal found 3/13![United Airlines logo]()
$281
This United Airlines deal was found by Cheapflights users on 3/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/111:05 am
ONT
- BIL
2 stops8h 52m
United Airlines
Deal found 3/12![United Airlines logo]()
$286
Find flight deals from Ontario to Billings
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Billings (BIL). 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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $277 (United Airlines) |
One-way from | $149 (Delta) |
Popular in | March |
Cheapest in | April |
Average price | $537 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Billings 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 13, 2026.
Use the filters below to find and compare flights from Ontario to Billings that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Sat 4/25
6:00 am-10:53 am
1 stop3h 53m
Billings Logan Intl
Sun 4/26
6:18 pm-11:44 pm
1 stop6h 26m
$294
Quickest round-trip
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Sat 4/11
6:00 am-10:53 am
1 stop3h 53m
Billings Logan Intl
Sat 4/18
6:18 pm-10:43 pm
1 stop5h 25m
$297
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 4/7
10:33 am-11:58 pm
1 stop12h 25m
Billings Logan Intl
Tue 4/14
2:05 pm-11:59 pm
1 stop10h 54m
$304
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Wed 4/29
7:00 am-1:26 pm
1 stop5h 26m
Billings Logan Intl
Sat 5/2
12:47 pm-11:48 pm
1 stop12h 01m
$323
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Mon 4/6
9:02 pm-1:51 pm
2 stops39h 49m
Billings Logan Intl
Mon 4/13
10:34 am-10:44 am
1 stop25h 10m
$328
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Wed 4/29
5:10 am-1:23 pm
1 stop7h 13m
Billings Logan Intl
Sat 5/2
5:05 am-12:22 pm
2 stops8h 17m
$352
Cheapest one-way
Quickest one-way
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 3/31
5:09 pm-10:29 pm
1 stop4h 20m
$191
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Tue 4/7
7:08 pm-11:58 pm
1 stop27h 50m
$207
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Sun 6/21
7:00 am-3:03 pm
1 stop7h 03m
$210
OntarioBillings
ONT - BIL
ONTBIL
Ontario
Wed 3/18
5:09 pm-10:29 pm
1 stop4h 20m
$231
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from Ontario to Billings
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 Billings in March.
| 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-Billings flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Billings flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Billings flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Billings 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-Billings 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 Billings
Have a flexible travel schedule? Discover the best time to fly to Billings from Ontario with our price prediction graph.
ONT-BIL
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 Billings
Reviews of airlines servicing Billings
Get insights into the airlines that provide service to Billings. 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 Billings. Reviews last updated March 13, 2026.
Read through reviews of airlines operating flights from Ontario to Billings, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Entertainment
7.0
Overall
8.0
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from Ontario to Billings. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Billings flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to Billings
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Billings
Explore flights to Billings departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 13, 2026.
Complete your trip
Complete your trip to Billings by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Billings by cabin class
Find flights from Ontario to Billings, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Billings flights
Browse other Ontario and Billings flight options. Last updated on March 13, 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 March 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Ontario to Billings
Discover the top 3 airlines that operate flights from Ontario to Billings. 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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$263 | Average$339 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$270 | Average$400 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$284 | Average$504 | FlexibilityNo cancel fee | On-time75% |