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Cheap flights from Ontario (ONT) to Idaho from $119

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 5/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — BOI
May 5 — May 121
From?
To?
Sun 5/5
Sun 5/12
1 adult, Economy
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How far in advance should I book a flight from Ontario to Idaho?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 42 days in advance, which can save you up to 217% on flights from Ontario to Idaho compared to booking the week you need them. Waiting 42 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $254. For sooner than that we have options available in the next 3 days from $409.

What is the cheapest month to fly from Ontario to Idaho?

Flights from Ontario to Idaho lean towards being more expensive in June. Prices are generally better when you fly from Ontario to Idaho in April, with the cheapest ticket starting at $48.

When is the cheapest time to fly from Ontario to Idaho (ONT - ID)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Idaho as you normally would.

Cheap Delta flights from Ontario to Idaho

Explore cheap flight options specifically provided by Delta for the route between Ontario and Idaho. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 30, 2024.
Consider these cheap Delta flights we've found departing from Ontario to Idaho. It's recommended that users confirm their flight details before booking.
Wed 5/226:50 amONT - GEG
1 stop8h 09mDelta
Sun 5/263:40 pmGEG - ONT
1 stop4h 31mDelta
Deal found 4/29$238
Tue 5/216:50 amONT - BOI
1 stop8h 16mDelta
Wed 5/225:59 pmBOI - ONT
1 stop6h 44mDelta
Deal found 4/30$248
Wed 8/282:00 pmONT - GEG
1 stop6h 58mDelta
Wed 9/45:30 amGEG - ONT
1 stop7h 31mDelta
Deal found 4/29$256
Wed 5/226:50 amONT - GEG
1 stop8h 09mDelta
Sun 5/263:40 pmGEG - ONT
1 stop4h 31mDelta
Deal found 4/29$257
Tue 6/186:30 pmONT - GEG
1 stop5h 32mDelta
Tue 6/255:05 amGEG - ONT
1 stop5h 55mDelta
Deal found 4/29$276
Fri 5/316:42 pmONT - GEG
1 stop5h 23mDelta
Mon 6/33:40 pmGEG - ONT
1 stop6h 57mDelta
Deal found 4/29$277
Thu 8/222:00 pmONT - GEG
1 stop6h 58mDelta
Sun 8/255:30 amGEG - ONT
1 stop5h 08mDelta
Deal found 4/28$293
Wed 5/2911:20 amONT - BOI
1 stop8h 12mDelta
Wed 6/55:59 pmBOI - ONT
1 stop6h 44mDelta
Deal found 4/29$296
Wed 6/195:00 pmONT - GEG
1 stop6h 45mDelta
Mon 6/245:05 amGEG - ONT
1 stop5h 55mDelta
Deal found 4/29$297

Cheap Alaska Airlines flights from Ontario to Idaho

Explore cheap flight options specifically provided by Alaska Airlines for the route between Ontario and Idaho. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 30, 2024.
Browse through some of the cheapest Alaska Airlines flights traveling from Ontario to Idaho. Deals frequently update to provide users with more options.
Tue 9/37:00 amONT - BOI
1 stop4h 53mAlaska Airlines
Tue 9/173:19 pmBOI - ONT
1 stop8h 01mAlaska Airlines
Deal found 4/29$236
Sat 9/77:00 amONT - GEG
1 stop7h 05mAlaska Airlines
Sat 9/75:32 pmGEG - ONT
1 stop4h 48mAlaska Airlines
Deal found 4/29$251
Tue 5/286:00 amONT - BOI
1 stop7h 07mAlaska Airlines
Tue 6/45:15 pmBOI - ONT
1 stop7h 43mAlaska Airlines
Deal found 4/28$287
Wed 5/224:21 pmONT - GEG
2 stops6h 38mAlaska Airlines
Sun 5/266:15 amGEG - ONT
1 stop4h 05mAlaska Airlines
Deal found 4/29$305
Tue 5/216:00 amONT - BOI
1 stop7h 07mAlaska Airlines
Wed 5/229:32 amBOI - ONT
2 stops15h 26mAlaska Airlines
Deal found 4/30$315
Wed 5/226:00 amONT - GEG
1 stop6h 38mAlaska Airlines
Mon 5/275:32 pmGEG - ONT
1 stop15h 33mAlaska Airlines
Deal found 4/29$319
Sat 6/158:20 pmONT - GEG
1 stop16h 19mAlaska Airlines
Tue 6/186:55 pmGEG - ONT
1 stop5h 04mAlaska Airlines
Deal found 4/29$324
Wed 5/294:21 pmONT - BOI
1 stop5h 39mAlaska Airlines
Wed 6/59:32 amBOI - ONT
2 stops15h 26mAlaska Airlines
Deal found 4/29$334
Wed 5/296:00 amONT - BOI
1 stop5h 14mAlaska Airlines
Wed 6/53:02 pmBOI - ONT
1 stop5h 12mAlaska Airlines
Deal found 4/29$336

Cheap Ontario to Idaho flights in April & May 2024

Find cheap flight options from Ontario to Idaho specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,948,547 searches. Prices were last updated on April 30, 2024.
These are some of the most attractive deals on flights from Ontario to Idaho in 2024. Check back soon for alternative fares.
Wed 5/226:50 amONT - GEG
1 stop8h 09mDelta
Sun 5/263:40 pmGEG - ONT
1 stop4h 31mDelta
Deal found 4/29$238
Thu 5/306:00 amONT - BOI
1 stop7h 07mAlaska Airlines
Tue 6/45:15 pmBOI - ONT
1 stop7h 43mAlaska Airlines
Deal found 4/28$238
Wed 5/226:50 amONT - GEG
1 stop8h 09mDelta
Sun 5/263:40 pmGEG - ONT
1 stop4h 31mDelta
Deal found 4/29$257
Sat 5/186:50 amONT - GEG
1 stop4h 58mDelta
Sat 5/255:10 pmGEG - ONT
1 stop4h 29mDelta
Deal found 4/30$267
Fri 5/316:42 pmONT - GEG
1 stop5h 23mDelta
Mon 6/33:40 pmGEG - ONT
1 stop6h 57mDelta
Deal found 4/29$277
Thu 5/306:00 amONT - BOI
1 stop7h 07mAlaska Airlines
Wed 6/53:02 pmBOI - ONT
1 stop5h 12mAlaska Airlines
Deal found 4/29$287
Thu 5/164:21 pmONT - BOI
1 stop5h 39mAlaska Airlines
Tue 5/213:02 pmBOI - ONT
1 stop5h 12mAlaska Airlines
Deal found 4/28$294
Thu 5/306:50 amONT - BOI
1 stop8h 16mDelta
Sun 6/25:59 pmBOI - ONT
1 stop6h 44mDelta
Deal found 4/28$296
Sat 5/2511:20 amONT - BOI
1 stop7h 40mDelta
Thu 5/305:59 pmBOI - ONT
1 stop6h 44mDelta
Deal found 4/27$297

Ontario to Idaho 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Idaho in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 30, 2024.
These are some of the most attractive deals on flights from Ontario to Idaho in 2024. Check back soon for alternative fares.
Tue 9/37:00 amONT - BOI
1 stop4h 53mAlaska Airlines
Tue 9/173:19 pmBOI - ONT
1 stop8h 01mAlaska Airlines
Deal found 4/29$236
Wed 5/226:50 amONT - GEG
1 stop8h 09mDelta
Sun 5/263:40 pmGEG - ONT
1 stop4h 31mDelta
Deal found 4/29$238
Thu 5/306:00 amONT - BOI
1 stop7h 07mAlaska Airlines
Tue 6/45:15 pmBOI - ONT
1 stop7h 43mAlaska Airlines
Deal found 4/28$238
Sat 9/74:45 pmONT - BOI
1 stop5h 49mAmerican Airlines
Tue 9/106:30 amBOI - ONT
1 stop10h 17mAmerican Airlines
Deal found 4/28$250
Sat 9/77:00 amONT - GEG
1 stop7h 05mAlaska Airlines
Sat 9/75:32 pmGEG - ONT
1 stop4h 48mAlaska Airlines
Deal found 4/29$251
Wed 8/282:00 pmONT - GEG
1 stop6h 58mDelta
Wed 9/45:30 amGEG - ONT
1 stop7h 31mDelta
Deal found 4/29$256
Wed 5/226:50 amONT - GEG
1 stop8h 09mDelta
Sun 5/263:40 pmGEG - ONT
1 stop4h 31mDelta
Deal found 4/29$257
Sat 5/186:50 amONT - GEG
1 stop4h 58mDelta
Sat 5/255:10 pmGEG - ONT
1 stop4h 29mDelta
Deal found 4/30$267
Tue 6/186:30 pmONT - GEG
1 stop5h 32mDelta
Wed 6/267:15 amGEG - ONT
1 stop6h 11mDelta
Deal found 4/29$276

Ontario to Idaho flights leaving soon

Find last-minute flight options from Ontario to Idaho for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 30, 2024.
Book one of these great deals on flights from Ontario to Idaho. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 5/411:20 amONT - BOI
1 stop8h 06mDelta
Sat 5/115:52 pmBOI - ONT
1 stop5h 46mDelta
Deal found 4/28$361
Thu 5/96:00 amONT - BOI
1 stop5h 20mAlaska Airlines
Mon 5/133:00 pmBOI - ONT
1 stop5h 04mAlaska Airlines
Deal found 4/28$381
Tue 5/76:00 amONT - BOI
1 stop5h 20mAlaska Airlines
Tue 5/73:00 pmBOI - ONT
1 stop7h 28mAlaska Airlines
Deal found 4/29$407
Tue 5/77:00 amONT - BOI
1 stop5h 39mAlaska Airlines
Wed 5/83:00 pmBOI - ONT
1 stop7h 28mAlaska Airlines
Deal found 4/28$412
Thu 5/911:20 amONT - GEG
1 stop5h 41mDelta
Mon 5/135:10 pmGEG - ONT
1 stop6h 33mDelta
Deal found 4/29$420
Sat 5/411:20 amONT - BOI
1 stop7h 02mDelta
Sat 5/115:31 amBOI - ONT
1 stop5h 33mDelta
Deal found 4/29$436
Mon 5/67:00 amONT - BOI
1 stop5h 55mDelta
Mon 5/67:05 pmBOI - ONT
1 stop5h 54mDelta
Deal found 4/28$444
Sun 5/56:00 amONT - BOI
1 stop7h 05mAlaska Airlines
Wed 5/89:59 amBOI - ONT
1 stop7h 06mAlaska Airlines
Deal found 4/28$450
Mon 5/61:36 pmONT - LWS
1 stop8h 39mUnited Airlines
Mon 5/135:33 amLWS - ONT
2 stops28h 28mUnited Airlines
Deal found 4/29$452

One-way flights to Idaho from Ontario

Search for one-way flight options from Ontario to Idaho. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 30, 2024.
Some of the best available deals we've found on one-way flights from Ontario to Idaho. Users in need of a round-trip flight from Ontario to Idaho instead should update the search form at the top of page.
Tue 5/216:00 amONT - BOI
1 stop7h 07mAlaska Airlines
Deal found 4/29$119
Wed 5/292:13 pmONT - BOI
1 stop6h 51mDelta
Deal found 4/29$148
Tue 5/216:00 amONT - GEG
1 stop8h 14mAlaska Airlines
Deal found 4/29$157
Wed 5/226:00 amONT - BOI
1 stop11h 59mAlaska Airlines
Deal found 4/29$167
Sat 5/2510:00 amONT - BOI
1 stop7h 59mAlaska Airlines
Deal found 4/29$168
Wed 7/35:00 pmONT - IDA
1 stop4h 18mDelta
Deal found 4/29$169
Mon 5/136:00 amONT - BOI
1 stop7h 05mAlaska Airlines
Deal found 4/29$175
Wed 5/226:00 amONT - GEG
1 stop16h 14mAlaska Airlines
Deal found 4/29$177
Mon 6/31:20 pmONT - BOI
1 stop4h 04mDelta
Deal found 4/29$178

Find flights from Ontario to Idaho within your budget

Customize your flight search to find flights from Ontario to Idaho 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 2,948,547 searches. Data last updated April 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$236 - $505

Route

Depart

Return

Price

OntarioBoise Air Term. Gowen Fld

ONT - BOI

ONTBOI

Ontario

Tue 9/3

1 stop4h 53m

Boise Air Term. Gowen Fld

Tue 9/17

1 stop8h 01m

$236

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 5/22

1 stop8h 09m

Spokane

Sun 5/26

1 stop4h 31m

$238

OntarioBoise Air Term. Gowen Fld

ONT - BOI

ONTBOI

Ontario

Tue 5/21

1 stop8h 16m

Boise Air Term. Gowen Fld

Wed 5/22

1 stop6h 44m

$248

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Sat 9/7

1 stop7h 05m

Spokane

Sat 9/7

1 stop4h 48m

$251

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 8/28

1 stop6h 58m

Spokane

Wed 9/4

1 stop7h 31m

$256

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Wed 5/22

1 stop8h 09m

Spokane

Sun 5/26

1 stop4h 31m

$257

OntarioBoise Air Term. Gowen Fld

ONT - BOI

ONTBOI

Ontario

Tue 5/28

1 stop7h 07m

Boise Air Term. Gowen Fld

Tue 6/4

1 stop7h 43m

$287

OntarioBoise Air Term. Gowen Fld

ONT - BOI

ONTBOI

Ontario

Sat 6/1

1 stop6h 38m

Boise Air Term. Gowen Fld

Mon 6/3

1 stop4h 20m

$338

OntarioSpokane

ONT - GEG

ONTGEG

Ontario

Thu 5/9

1 stop6h 44m

Spokane

Mon 5/13

1 stop4h 47m

$505

Flights are sorted by cheapest first

Deals found on 4/29

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Idaho

Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated April 30, 2024.
Read through reviews of airlines operating flights from Ontario to Idaho, such as Delta, Alaska Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,116 reviews
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.1
Very good
10,913 reviews
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
11,202 reviews
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,834 reviews
Alaska Airlines
8.1
Very good
9,116 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Idaho. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Idaho?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Idaho from Ontario.

  • Can I find flights from Ontario to Idaho for under $300 on Cheapflights?

    Yes, there are multiple flights from Ontario to Idaho for under $300. The cheapest flight booked recently is on Alaska Airlines for just $236, but on average you can expect to pay $283.

  • Are there last-minute flights available from Ontario to Idaho for under $400?

    There are currently 20+ open flights from Ontario to Idaho within the next 7 days for less than $400.

  • What are the cheapest airlines to fly from Ontario to Idaho one-way?

    The cheapest airlines for a one-way flight from Ontario to Idaho are Alaska Airlines ($119), Delta ($148), and United Airlines ($191).

  • What are the most popular routes from Ontario to Idaho?

    The most popular flight routes from Ontario to Idaho are Ontario - Boise Air Term. Gowen Fld, Ontario - Spokane and Ontario - Idaho Falls Fanning Field.

  • What are the most popular airlines that fly from Ontario to Idaho?

    American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Ontario to Idaho.

  • What does ONT to BOI mean?

    Great question - ONT to BOI just means Ontario Airport to Boise Air Term. Gowen Fld Airport. Now you’ll know what these unique codes when you look for flights! Ready for more IATA code knowledge? These are related airports for your current travel destination: Idaho Falls Fanning Field Airport (IDA), Hailey Sun Valley-Friedman Airport (SUN), Lewiston Nez Perce Rgnl Airport (LWS), Pocatello Airport (PIH), Twin Falls Joslin Airport (TWF).

  • Can I find deals for flights from Ontario to Idaho that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Idaho flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Idaho with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Idaho flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Idaho that include hotel bookings?

    Yes. In addition to deals on Ontario to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Idaho.

  • Can I find deals for business class flights from Ontario to Idaho?

    Yes. Cheapflights offers flight deals from Ontario to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Idaho that allow pets onboard?

    Many airlines flying from Ontario to Idaho offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Idaho?

    Yes, you can often find last-minute deals on Ontario to Idaho flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Idaho flight deals updated?

    The Ontario to Idaho flight deals you see on this page were last updated on 4/30.

See more FAQs

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Alternative routes for Ontario to Idaho
See prices for flight routes from nearby airports that may be better suited for you.

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Top 6 airlines flying from Ontario to Idaho

Discover the top 6 airlines that operate flights from Ontario to Idaho. 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 2,948,547 searches. Data last updated April 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$83Average$174FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
Allegiant AirCheapest$142Average$195FlexibilityNo cancel feeOn-time88%
Search Allegiant Air flights
Alaska AirlinesCheapest$151Average$321FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapest$172Average$360FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$233Average$494FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$256Average$510FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Search flights from Ontario to Idaho by cabin class

Find flights from Ontario to Idaho, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Idaho?

When you search for this flight from Ontario to Idaho, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Idaho?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Idaho from Ontario.

Can Cheapflights find flights from Ontario to Idaho with no change fees?

Certainly. Search results for flights to Idaho from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to Idaho become cheaper?

Yes, Cheapflights offers price alerts on Ontario to Idaho flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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