$153+ Cheap flights from Billings to Ontario (BIL - ONT)
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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — ONT
Jul 5 — Jul 121
Round-trip
1 adult, Economy
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Cheapest flights from Billings to OntarioExplore the most affordable flight options available from Billings to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 5, 2026.
Explore the most affordable flight options available from Billings to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 5, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/31. 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 9/156:14 am
BIL
- ONT
1 stop6h 02m
Alaska Airlines
Mon 9/283:14 pm
ONT
- BIL
1 stop7h 15m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$311
This Alaska Airlines deal was found by Cheapflights users on 6/1. 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 10/76:01 am
BIL
- ONT
1 stop8h 18m
Alaska Airlines
Thu 10/222:14 pm
ONT
- BIL
1 stop8h 36m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$321
This Expedia deal was found by Cheapflights users on 6/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/13:43 pm
BIL
- ONT
1 stop9h 08m
Alaska Airlines
Wed 7/82:05 pm
ONT
- BIL
1 stop8h 46m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 7/209:59 am
BIL
- ONT
1 stop6h 55m
Multiple Airlines
Wed 7/223:40 pm
ONT
- BIL
2 stops24h 26m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$336
This Delta deal was found by Cheapflights users on 6/2. 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 12/186:25 pm
BIL
- ONT
1 stop6h 23m
Delta
Mon 12/215:05 pm
ONT
- BIL
1 stop4h 27m
Delta
Deal found 6/2![Delta logo]()
$341
This Delta deal was found by Cheapflights users on 6/1. 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 8/285:20 am
BIL
- ONT
1 stop4h 28m
Delta
Sat 8/296:00 am
ONT
- BIL
1 stop4h 07m
Delta
Deal found 6/1![Delta logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 7/209:59 am
BIL
- ONT
1 stop23h 04m
Multiple Airlines
Sat 7/258:58 am
ONT
- BIL
2 stops31h 08m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
Tue 7/212:10 pm
BIL
- ONT
2 stops18h 53m
Multiple Airlines
Thu 7/233:40 pm
ONT
- BIL
1 stop16h 34m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 6/3. 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 7/216:34 pm
BIL
- ONT
1 stop6h 14m
Delta
Sat 7/255:10 pm
ONT
- BIL
1 stop4h 43m
Delta
Deal found 6/3![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 6/3. 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 7/205:20 am
BIL
- ONT
1 stop4h 27m
Delta
Wed 7/225:10 pm
ONT
- BIL
1 stop4h 40m
Delta
Deal found 6/3![Delta logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Thu 7/25:56 pm
BIL
- ONT
2 stops26h 55m
Multiple Airlines
Thu 7/911:52 am
ONT
- BIL
1 stop20h 22m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 7/209:59 am
BIL
- ONT
1 stop23h 04m
Multiple Airlines
Fri 7/243:40 pm
ONT
- BIL
2 stops22h 10m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$370
Best flights from Billings to OntarioDiscover carefully curated flight deals from Billings to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 5, 2026.
Discover carefully curated flight deals from Billings to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 5, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/1. 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 7/26:00 am
BIL
- ONT
1 stop8h 09m
Alaska Airlines
Wed 7/82:05 pm
ONT
- BIL
1 stop8h 46m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 7/209:59 am
BIL
- ONT
1 stop6h 55m
Multiple Airlines
Wed 7/223:40 pm
ONT
- BIL
2 stops24h 26m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$336
This Delta deal was found by Cheapflights users on 5/31. 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 8/285:20 am
BIL
- ONT
1 stop4h 28m
Delta
Sun 8/305:05 pm
ONT
- BIL
1 stop4h 20m
Delta
Deal found 5/31![Delta logo]()
$361
This Delta deal was found by Cheapflights users on 6/3. 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 7/205:20 am
BIL
- ONT
1 stop4h 27m
Delta
Wed 7/225:10 pm
ONT
- BIL
1 stop4h 40m
Delta
Deal found 6/3![Delta logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 6/3. 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 10/26:14 am
BIL
- ONT
1 stop6h 02m
Alaska Airlines
Tue 10/67:23 am
ONT
- BIL
1 stop6h 41m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 5/31. 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 9/156:14 am
BIL
- ONT
2 stops12h 04m
Alaska Airlines
Mon 9/2810:47 am
ONT
- BIL
2 stops11h 42m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$453
This CheapOair deal was found by Cheapflights users on 6/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:22 pm
BIL
- ONT
1 stop16h 52m
Alaska Airlines
Sun 7/125:26 pm
ONT
- BIL
1 stop5h 25m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$465
Last-minute flights from Billings to OntarioDiscover last-minute flight deals from Billings to Ontario. Data last updated June 5, 2026 and is based on user searches.
Discover last-minute flight deals from Billings to Ontario. Data last updated June 5, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 6/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/13:43 pm
BIL
- ONT
1 stop9h 08m
Alaska Airlines
Wed 7/82:05 pm
ONT
- BIL
1 stop8h 46m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Thu 7/25:56 pm
BIL
- ONT
2 stops26h 55m
Multiple Airlines
Thu 7/911:52 am
ONT
- BIL
1 stop20h 22m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$364
This Orbitz deal was found by Cheapflights users on 6/4. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:22 pm
BIL
- ONT
1 stop16h 52m
Alaska Airlines
Thu 7/99:20 pm
ONT
- BIL
1 stop12h 45m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$371
This lol.travel deal was found by Cheapflights users on 6/1. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:00 am
BIL
- ONT
1 stop6h 14m
Alaska Airlines
Wed 7/86:02 am
ONT
- BIL
1 stop6h 03m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 7/209:59 am
BIL
- ONT
1 stop6h 55m
Multiple Airlines
Wed 7/223:40 pm
ONT
- BIL
2 stops24h 26m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 7/209:59 am
BIL
- ONT
1 stop23h 04m
Multiple Airlines
Sat 7/258:58 am
ONT
- BIL
2 stops31h 08m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 6/3. 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 7/205:20 am
BIL
- ONT
1 stop4h 27m
Delta
Wed 7/225:10 pm
ONT
- BIL
1 stop4h 40m
Delta
Deal found 6/3![Delta logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 7/209:59 am
BIL
- ONT
1 stop23h 04m
Multiple Airlines
Fri 7/243:40 pm
ONT
- BIL
2 stops22h 10m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$370
This Expedia deal was found by Cheapflights users on 6/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:22 pm
BIL
- ONT
1 stop16h 52m
Alaska Airlines
Sat 7/257:00 am
ONT
- BIL
1 stop7h 03m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$409
This Expedia deal was found by Cheapflights users on 6/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:22 pm
BIL
- ONT
1 stop16h 52m
Alaska Airlines
Fri 7/245:26 pm
ONT
- BIL
1 stop5h 25m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
Tue 7/212:10 pm
BIL
- ONT
2 stops18h 53m
Multiple Airlines
Thu 7/233:40 pm
ONT
- BIL
1 stop16h 34m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 6/3. 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 7/216:34 pm
BIL
- ONT
1 stop6h 14m
Delta
Sat 7/255:10 pm
ONT
- BIL
1 stop4h 43m
Delta
Deal found 6/3![Delta logo]()
$359
One-way flights from Billings to OntarioSearch for one-way flight options from Billings to Ontario. Find affordable one-way fares based on user searches. Data last updated June 5, 2026.
Search for one-way flight options from Billings to Ontario. Find affordable one-way fares based on user searches. Data last updated June 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/31. 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.
Tue 7/142:10 pm
BIL
- ONT
2 stops26h 04m
Multiple Airlines
Deal found 5/31![Multiple Airlines logo]()
$153
This Delta deal was found by Cheapflights users on 6/2. 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.
Thu 9/246:33 pm
BIL
- ONT
1 stop6h 04m
Delta
Deal found 6/2![Delta logo]()
$156
This Alaska Airlines deal was found by Cheapflights users on 6/4. 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 7/27:22 pm
BIL
- ONT
1 stop16h 52m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$171
This Mytrip deal was found by Cheapflights users on 6/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:22 pm
BIL
- ONT
1 stop16h 52m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$186
This Priceline deal was found by Cheapflights users on 6/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/41:45 pm
BIL
- ONT
1 stop7h 51m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$204
This Delta deal was found by Cheapflights users on 6/1. 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.
Sun 7/125:20 am
BIL
- ONT
1 stop4h 27m
Delta
Deal found 6/1![Delta logo]()
$206
This Delta deal was found by Cheapflights users on 6/4. 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 7/65:20 am
BIL
- ONT
1 stop4h 30m
Delta
Deal found 6/4![Delta logo]()
$216
This United Airlines deal was found by Cheapflights users on 6/4. 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.
Thu 7/25:00 am
BIL
- ONT
2 stops8h 12m
United Airlines
Deal found 6/4![United Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Sat 7/43:40 pm
BIL
- ONT
2 stops17h 23m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$234
This Alaska Airlines deal was found by Cheapflights users on 6/5. 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 10/63:44 pm
BIL
- ONT
2 stops8h 58m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$252
This Alaska Airlines deal was found by Cheapflights users on 6/1. 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 7/266:00 am
BIL
- ONT
1 stop6h 11m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$256
Find flight deals from Billings to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to Ontario (ONT). 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 June 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (Alaska Airlines) |
One-way from | $153 (Kiwi.com) |
Popular in | July |
Cheapest in | June |
Average price | $180 |
Cheapflights Fare Finder
Customize your flight search to find flights from Billings to Ontario 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 June 5, 2026.
Use the filters below to find and compare flights from Billings to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Thu 7/2
6:00 am-1:09 pm
1 stop8h 09m
Ontario
Wed 7/8
2:05 pm-11:51 pm
1 stop8h 46m
$331
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Mon 7/20
9:59 am-3:54 pm
1 stop6h 55m
Ontario
Wed 7/22
3:40 pm-5:06 pm
2 stops24h 26m
$336
Quickest round-trip
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Fri 8/28
5:20 am-8:48 am
1 stop4h 28m
Ontario
Sun 8/30
5:05 pm-10:25 pm
1 stop4h 20m
$361
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Mon 7/20
5:20 am-8:47 am
1 stop4h 27m
Ontario
Wed 7/22
5:10 pm-10:50 pm
1 stop4h 40m
$361
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Fri 10/2
6:14 am-11:16 am
1 stop6h 02m
Ontario
Tue 10/6
7:23 am-3:04 pm
1 stop6h 41m
$409
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Tue 9/15
6:14 am-5:18 pm
2 stops12h 04m
Ontario
Mon 9/28
10:47 am-11:29 pm
2 stops11h 42m
$453
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Wed 7/8
7:22 pm-11:14 am
1 stop16h 52m
Ontario
Sun 7/12
5:26 pm-11:51 pm
1 stop5h 25m
$465
Cheapest one-way
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Thu 9/24
5:20 am-8:53 am
1 stop4h 33m
$156
Quickest one-way
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Wed 7/29
5:20 am-8:47 am
1 stop4h 27m
$156
BillingsOntario
BIL - ONT
BILONT
Billings Logan Intl
Thu 7/30
5:20 am-8:47 am
1 stop4h 27m
$156
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from Billings to Ontario
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 Billings to Ontario in June.
| 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 Billings-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Billings-Ontario 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 Billings-Ontario 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 Billings to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Billings with our price prediction graph.
BIL-ONT
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 Billings to Ontario
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 5, 2026.
See what other customers who have flown with Delta from Billings to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Billings to Ontario. 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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Alternative routes for Billings to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 5, 2026.
Billings and Ontario flights
Browse other Billings and Ontario flight options. Last updated on June 5, 2026.
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Billings to Ontario
Discover the top airline that operate flights from Billings to Ontario. 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 June 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$180 | Average$329 | FlexibilityNo cancel fee | On-timeN/A |