$160+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — ONT
Jul 6 — Jul 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Idaho Falls to Ontario 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Idaho Falls to Ontario
Cheapest
Best
Last-minute
One-way
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 6, 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 6, 2026.
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.
Mon 8/310:47 pm
IDA
- ONT
1 stop17h 27m
Multiple Airlines
Sun 8/164:34 pm
ONT
- IDA
1 stop22h 31m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$204
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.
Mon 8/310:47 pm
IDA
- ONT
1 stop17h 27m
Multiple Airlines
Thu 8/134:34 pm
ONT
- IDA
1 stop22h 31m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$205
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.
Mon 8/310:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Mon 8/1711:47 am
ONT
- IDA
2 stops9h 17m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$288
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.
Fri 7/3110:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Sun 8/164:34 pm
ONT
- IDA
1 stop22h 31m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$290
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.
Fri 7/3110:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Thu 8/134:34 pm
ONT
- IDA
1 stop22h 31m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$291
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.
Mon 8/310:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Fri 8/1411:47 am
ONT
- IDA
2 stops9h 17m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$310
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 7/316:00 am
IDA
- ONT
1 stop3h 47m
Delta
Wed 8/125:05 pm
ONT
- IDA
1 stop4h 27m
Delta
Deal found 6/1![Delta logo]()
$319
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.
Wed 7/296:00 am
IDA
- ONT
1 stop3h 47m
Delta
Sat 8/156:00 am
ONT
- IDA
1 stop3h 50m
Delta
Deal found 6/4![Delta logo]()
$339
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.
Tue 6/163:25 pm
IDA
- ONT
2 stops8h 16m
Delta
Sat 6/206:00 am
ONT
- IDA
1 stop3h 43m
Delta
Deal found 6/1![Delta logo]()
$344
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.
Tue 8/47:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Wed 8/127:00 am
ONT
- IDA
1 stop5h 06m
Alaska Airlines
Deal found 6/1![Alaska Airlines logo]()
$364
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 6, 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 6, 2026.
This CheapOair deal was found by Cheapflights users on 6/6. 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.
Mon 9/213:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Tue 9/2212:12 pm
ONT
- IDA
1 stop9h 44m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$319
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 7/147:00 pm
IDA
- ONT
1 stop5h 48m
Delta
Tue 7/216:00 am
ONT
- IDA
1 stop3h 43m
Delta
Deal found 6/3![Delta logo]()
$319
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/12:30 pm
IDA
- ONT
1 stop7h 12m
United Airlines
Wed 7/85:00 am
ONT
- IDA
1 stop7h 25m
United Airlines
Deal found 6/3![United Airlines logo]()
$319
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.
Fri 7/316:00 am
IDA
- ONT
1 stop3h 47m
Delta
Sat 8/156:00 am
ONT
- IDA
1 stop3h 50m
Delta
Deal found 6/4![Delta logo]()
$339
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 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.
Fri 10/23:57 pm
IDA
- ONT
1 stop5h 27m
Alaska Airlines
Mon 10/52:14 pm
ONT
- IDA
1 stop7h 40m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$369
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:04 pm
IDA
- ONT
1 stop5h 49m
United Airlines
Sun 8/235:00 am
ONT
- IDA
1 stop7h 29m
United Airlines
Deal found 6/2![United Airlines logo]()
$439
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 7/316:00 am
IDA
- ONT
1 stop3h 47m
Delta
Sun 8/169:43 am
ONT
- IDA
1 stop3h 52m
Delta
Deal found 6/1![Delta logo]()
$407
This CheapOair deal was found by Cheapflights users on 6/6. 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.
Tue 9/226:18 am
IDA
- ONT
2 stops10h 29m
Alaska Airlines
Fri 9/256:14 pm
ONT
- IDA
1 stop18h 10m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$416
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
IDA
- ONT
1 stop3h 47m
Delta
Sun 7/196:00 am
ONT
- IDA
1 stop3h 43m
Delta
Deal found 6/5![Delta logo]()
$419
Last-minute flights from Idaho Falls to OntarioDiscover last-minute flight deals from Idaho Falls to Ontario. Data last updated June 6, 2026 and is based on user searches.
Discover last-minute flight deals from Idaho Falls to Ontario. Data last updated June 6, 2026 and is based on user searches.
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.
Tue 6/163:25 pm
IDA
- ONT
2 stops8h 16m
Delta
Sat 6/206:00 am
ONT
- IDA
1 stop3h 43m
Delta
Deal found 6/1![Delta logo]()
$344
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 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.
Fri 7/310:47 pm
IDA
- ONT
1 stop22h 04m
Multiple Airlines
Mon 7/1311:52 am
ONT
- IDA
2 stops9h 05m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$364
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.
Wed 7/296:00 am
IDA
- ONT
1 stop3h 47m
Delta
Sat 8/156:00 am
ONT
- IDA
1 stop3h 50m
Delta
Deal found 6/4![Delta logo]()
$339
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 7/307:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Sun 8/167:00 am
ONT
- IDA
1 stop5h 06m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$369
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.
Fri 7/3110:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Sun 8/164:34 pm
ONT
- IDA
1 stop22h 31m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$290
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.
Fri 7/3110:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Thu 8/134:34 pm
ONT
- IDA
1 stop22h 31m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$291
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 7/316:00 am
IDA
- ONT
1 stop3h 47m
Delta
Wed 8/125:05 pm
ONT
- IDA
1 stop4h 27m
Delta
Deal found 6/1![Delta logo]()
$319
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.
Fri 7/3110:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Mon 8/1711:47 am
ONT
- IDA
2 stops9h 17m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$373
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 7/316:00 am
IDA
- ONT
1 stop3h 47m
Delta
Fri 8/149:43 am
ONT
- IDA
1 stop3h 52m
Delta
Deal found 6/1![Delta logo]()
$374
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.
Fri 7/3110:47 pm
IDA
- ONT
1 stop10h 16m
Multiple Airlines
Fri 8/1411:47 am
ONT
- IDA
2 stops9h 17m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$395
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 6, 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 6, 2026.
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.
Wed 7/227:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$160
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 6/297:00 pm
IDA
- ONT
1 stop5h 49m
Delta
Deal found 6/4![Delta logo]()
$170
This Delta 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 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
Deal found 6/5![Delta logo]()
$180
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 6/1110:35 am
IDA
- ONT
1 stop7h 53m
United Airlines
Deal found 6/4![United Airlines logo]()
$200
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 7/27:00 pm
IDA
- ONT
1 stop5h 49m
Delta
Deal found 6/2![Delta logo]()
$215
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/289:45 am
IDA
- ONT
3 stops52h 03m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$241
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.
Sun 7/127:00 pm
IDA
- ONT
1 stop5h 48m
Delta
Deal found 6/2![Delta logo]()
$248
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.
Wed 7/87:15 am
IDA
- ONT
1 stop6h 54m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$252
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 7/91:43 pm
IDA
- ONT
1 stop7h 53m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$254
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/284:14 pm
IDA
- ONT
1 stop8h 37m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$260
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.
Tue 7/2111:25 am
IDA
- ONT
2 stops12h 27m
Delta
Deal found 6/4![Delta logo]()
$263
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.
Sat 10/314:12 pm
IDA
- ONT
2 stops8h 30m
Alaska Airlines
Deal found 6/5![Alaska Airlines logo]()
$287
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 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $204 (Kiwi.com) |
One-way from | $160 (Priceline) |
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 6, 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
Mon 9/21
3:57 pm-8:24 pm
1 stop5h 27m
Ontario
Tue 9/22
12:12 pm-10:56 pm
1 stop9h 44m
$319
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Tue 7/14
7:00 pm-11:48 pm
1 stop5h 48m
Ontario
Tue 7/21
6:00 am-10:43 am
1 stop3h 43m
$319
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Wed 7/1
2:30 pm-8:42 pm
1 stop7h 12m
Ontario
Wed 7/8
5:00 am-1:25 pm
1 stop7h 25m
$319
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Fri 7/31
6:00 am-8:47 am
1 stop3h 47m
Ontario
Sat 8/15
6:00 am-10:50 am
1 stop3h 50m
$339
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Thu 7/2
7:15 am-1:09 pm
1 stop6h 54m
Ontario
Wed 7/8
7:00 am-1:06 pm
1 stop5h 06m
$366
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
2:14 pm-10:54 pm
1 stop7h 40m
$369
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Fri 7/31
6:00 am-8:47 am
1 stop3h 47m
Ontario
Sun 8/16
9:43 am-2:35 pm
1 stop3h 52m
$407
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Tue 9/22
6:18 am-3:47 pm
2 stops10h 29m
Ontario
Fri 9/25
6:14 pm-1:24 pm
1 stop18h 10m
$416
Quickest round-trip
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Wed 7/15
6:00 am-8:47 am
1 stop3h 47m
Ontario
Sun 7/19
6:00 am-10:43 am
1 stop3h 43m
$419
Idaho FallsOntario
IDA - ONT
IDAONT
Idaho Falls Fanning Field
Thu 8/20
4:04 pm-8:53 pm
1 stop5h 49m
Ontario
Sun 8/23
5:00 am-1:29 pm
1 stop7h 29m
$439
Showing 1-10 of 22 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
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 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 6, 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.
Crew
8.5
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Entertainment
7.8
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.
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
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Other flights from Idaho Falls
Popular flights
Alternative routes for Idaho Falls to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Idaho Falls to Ontario by cabin class
Find flights from Idaho Falls to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 6, 2026.
Idaho Falls and Ontario flights
Browse other Idaho Falls and Ontario flight options. Last updated on June 6, 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 6, 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 6, 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 |