$154+ Cheap flights from Idaho Falls to Ontario (IDA - 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — ONT
Jul 1 — Jul 81
Round-trip
1 adult, Economy
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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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Cheapest flights from Idaho Falls to OntarioExplore the most affordable flight options available from Idaho Falls to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 1, 2026.
Explore the most affordable flight options available from Idaho Falls to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 1, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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.
Sat 12/56:15 am
IDA
- ONT
1 stop5h 54m
Alaska Airlines
Tue 12/84:00 pm
ONT
- IDA
1 stop5h 39m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2210:56 pm
IDA
- ONT
1 stop21h 55m
Multiple Airlines
Wed 7/223:40 pm
ONT
- IDA
2 stops46h 20m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$320
This Alaska Airlines deal was found by Cheapflights users on 5/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Fri 9/47:12 am
ONT
- IDA
1 stop5h 12m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$364
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 7/27:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Wed 7/87:00 am
ONT
- IDA
1 stop5h 06m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 5/30. 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.
Mon 8/313:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Thu 9/37:12 am
ONT
- IDA
1 stop5h 12m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 5/27. 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 8/147:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Sun 8/167:00 am
ONT
- IDA
1 stop5h 06m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$413
This Delta deal was found by Cheapflights users on 5/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
IDA
- ONT
1 stop3h 53m
Delta
Mon 6/85:21 pm
ONT
- IDA
1 stop4h 10m
Delta
Deal found 5/29![Delta logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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.
Wed 7/297:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Fri 8/145:26 pm
ONT
- IDA
1 stop28h 13m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$416
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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 7/31:43 pm
IDA
- ONT
2 stops21h 13m
Alaska Airlines
Fri 7/105:32 pm
ONT
- IDA
1 stop18h 34m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$436
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 8/187:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Tue 8/257:12 am
ONT
- IDA
2 stops7h 08m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$446
Best flights from Idaho Falls to OntarioDiscover carefully curated flight deals from Idaho Falls to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 1, 2026.
Discover carefully curated flight deals from Idaho Falls to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 1, 2026.
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:14 pm
IDA
- ONT
1 stop5h 28m
United Airlines
Tue 7/75:00 am
ONT
- IDA
1 stop7h 25m
United Airlines
Deal found 5/31![United Airlines logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 5/30. 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.
Mon 8/313:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Thu 9/37:12 am
ONT
- IDA
1 stop5h 12m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$409
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.
Sat 6/207:01 pm
IDA
- ONT
1 stop4h 23m
Delta
Sun 6/286:00 am
ONT
- IDA
1 stop3h 43m
Delta
Deal found 5/31![Delta logo]()
$449
This Alaska Airlines deal was found by Cheapflights users on 5/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Mon 9/77:12 am
ONT
- IDA
1 stop5h 12m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$409
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 6/196:00 am
IDA
- ONT
1 stop3h 50m
Delta
Sun 6/286:00 am
ONT
- IDA
1 stop3h 43m
Delta
Deal found 5/31![Delta logo]()
$449
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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.
Wed 7/297:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Fri 8/145:26 pm
ONT
- IDA
1 stop28h 13m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$416
This United Airlines deal was found by Cheapflights users on 5/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/244:10 pm
IDA
- ONT
1 stop5h 36m
United Airlines
Mon 6/295:00 am
ONT
- IDA
1 stop7h 25m
United Airlines
Deal found 5/29![United Airlines logo]()
$487
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.
Fri 10/23:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Mon 10/56:54 pm
ONT
- IDA
2 stops17h 12m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$416
This United Airlines deal was found by Cheapflights users on 5/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/124:10 pm
IDA
- ONT
1 stop5h 36m
United Airlines
Sat 6/135:00 am
ONT
- IDA
1 stop7h 25m
United Airlines
Deal found 5/30![United Airlines logo]()
$536
This Alaska Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 7/294:14 pm
IDA
- ONT
1 stop18h 42m
Alaska Airlines
Sun 8/27:00 am
ONT
- IDA
1 stop5h 06m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$516
Last-minute flights from Idaho Falls to OntarioDiscover last-minute flight deals from Idaho Falls to Ontario. Data last updated June 1, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho Falls to Ontario. Data last updated June 1, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
IDA
- ONT
1 stop3h 53m
Delta
Fri 6/56:00 am
ONT
- IDA
1 stop3h 47m
Delta
Deal found 5/28![Delta logo]()
$464
This Delta deal was found by Cheapflights users on 5/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
IDA
- ONT
1 stop3h 53m
Delta
Mon 6/85:21 pm
ONT
- IDA
1 stop4h 10m
Delta
Deal found 5/29![Delta logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2210:56 pm
IDA
- ONT
1 stop21h 55m
Multiple Airlines
Wed 7/223:40 pm
ONT
- IDA
2 stops46h 20m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$320
This Expedia deal was found by Cheapflights users on 5/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/224:14 pm
IDA
- ONT
1 stop8h 37m
Alaska Airlines
Wed 7/225:32 pm
ONT
- IDA
1 stop18h 34m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$459
This Expedia deal was found by Cheapflights users on 5/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/241:43 pm
IDA
- ONT
1 stop10h 28m
Alaska Airlines
Mon 6/295:32 pm
ONT
- IDA
1 stop18h 34m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$364
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:14 pm
IDA
- ONT
1 stop5h 28m
United Airlines
Tue 7/75:00 am
ONT
- IDA
1 stop7h 25m
United Airlines
Deal found 5/31![United Airlines logo]()
$319
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:14 pm
IDA
- ONT
2 stops26h 49m
Alaska Airlines
Tue 7/75:32 pm
ONT
- IDA
1 stop18h 34m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$466
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 7/27:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Wed 7/87:00 am
ONT
- IDA
1 stop5h 06m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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 7/31:43 pm
IDA
- ONT
2 stops21h 13m
Alaska Airlines
Fri 7/105:32 pm
ONT
- IDA
1 stop18h 34m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$436
This Alaska Airlines deal was found by Cheapflights users on 5/28. 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.
Wed 7/297:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Fri 8/145:26 pm
ONT
- IDA
1 stop28h 13m
Alaska Airlines
Deal found 5/28![Alaska Airlines logo]()
$416
One-way flights from Idaho Falls to OntarioSearch for one-way flight options from Idaho Falls to Ontario. Find affordable one-way fares based on user searches. Data last updated June 1, 2026.
Search for one-way flight options from Idaho Falls to Ontario. Find affordable one-way fares based on user searches. Data last updated June 1, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/23:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Deal found 5/31![Alaska Airlines logo]()
$154
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:00 pm
IDA
- ONT
1 stop5h 48m
Delta
Deal found 5/28![Delta logo]()
$160
This United Airlines deal was found by Cheapflights users on 5/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/172:30 pm
IDA
- ONT
1 stop7h 16m
United Airlines
Deal found 5/28![United Airlines logo]()
$170
This Delta deal was found by Cheapflights users on 5/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/26:00 am
IDA
- ONT
1 stop3h 47m
Delta
Deal found 5/27![Delta logo]()
$190
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:04 pm
IDA
- ONT
1 stop5h 49m
United Airlines
Deal found 5/31![United Airlines logo]()
$200
This United Airlines deal was found by Cheapflights users on 5/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:00 am
IDA
- ONT
1 stop6h 47m
United Airlines
Deal found 5/28![United Airlines logo]()
$240
This Delta deal was found by Cheapflights users on 5/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:00 am
IDA
- ONT
1 stop3h 47m
Delta
Deal found 5/29![Delta logo]()
$248
This Alaska Airlines deal was found by Cheapflights users on 5/27. 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.
Mon 6/157:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 5/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
IDA
- ONT
1 stop3h 48m
Delta
Deal found 5/27![Delta logo]()
$290
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:22 pm
IDA
- ONT
2 stops8h 30m
Delta
Deal found 5/28![Delta logo]()
$295
This Alaska Airlines deal was found by Cheapflights users on 5/27. 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.
Sun 9/136:18 am
IDA
- ONT
1 stop5h 58m
Alaska Airlines
Deal found 5/27![Alaska Airlines logo]()
$300
Find flight deals from Idaho Falls to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) 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 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $319 (United Airlines) |
One-way from | $154 (Trip.com) |
Popular in | November |
Cheapest in | April |
Average price | $399 |
Cheapflights Fare Finder
Customize your flight search to find flights from Idaho Falls 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 1, 2026.
Use the filters below to find and compare flights from Idaho Falls to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Tue 6/30
4:14 pm-8:42 pm
1 stop5h 28m
Ontario
Tue 7/7
5:00 am-1:25 pm
1 stop7h 25m
$319
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Mon 8/31
3:57 pm-8:24 pm
1 stop5h 27m
Ontario
Thu 9/3
7:12 am-1:24 pm
1 stop5h 12m
$409
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Thu 9/3
3:57 pm-8:24 pm
1 stop5h 27m
Ontario
Mon 9/7
7:12 am-1:24 pm
1 stop5h 12m
$409
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Wed 7/29
7:15 am-1:09 pm
1 stop6h 54m
Ontario
Fri 8/14
5:26 pm-10:39 pm
1 stop28h 13m
$416
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Fri 10/2
3:57 pm-8:24 pm
1 stop5h 27m
Ontario
Mon 10/5
6:54 pm-1:06 pm
2 stops17h 12m
$416
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Sat 6/20
7:01 pm-10:24 pm
1 stop4h 23m
Ontario
Sun 6/28
6:00 am-10:43 am
1 stop3h 43m
$449
Quickest round-trip
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Fri 6/19
6:00 am-8:50 am
1 stop3h 50m
Ontario
Sun 6/28
6:00 am-10:43 am
1 stop3h 43m
$449
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Wed 6/24
4:10 pm-8:46 pm
1 stop5h 36m
Ontario
Mon 6/29
5:00 am-1:25 pm
1 stop7h 25m
$487
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Wed 7/29
4:14 pm-9:56 am
1 stop18h 42m
Ontario
Sun 8/2
7:00 am-1:06 pm
1 stop5h 06m
$516
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Fri 6/12
4:10 pm-8:46 pm
1 stop5h 36m
Ontario
Sat 6/13
5:00 am-1:25 pm
1 stop7h 25m
$536
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Idaho Falls 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 Idaho Falls 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 Idaho Falls-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Idaho Falls-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 Idaho Falls-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 Idaho Falls to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Idaho Falls with our price prediction graph.
IDA-ONT
Estimated round-trip price
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Cheapflights Insights
Everything you need to know about your flight from Idaho Falls 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 1, 2026.
Peruse reviews from past customers who have flown with Delta and United Airlines from Idaho Falls to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.8
Boarding
8.1
Entertainment
7.8
Overall
7.9
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Idaho Falls 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 Idaho Falls 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 1, 2026.
Idaho Falls and Ontario flights
Browse other Idaho Falls and Ontario flight options. Last updated on June 1, 2026.
Other flights from Idaho Falls
Browse through other flights departing from Idaho Falls. Flights are based on user searches made on Cheapflights and were last updated on June 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Idaho Falls to Ontario
Discover the top 2 airlines that operate flights from Idaho Falls 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 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$143 | Average$565 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$155 | Average$358 | FlexibilityNo cancel fee | On-timeN/A |