Which airports can I use when flying from Ontario to Idaho Falls?

Flights from Ontario to Idaho Falls usually depart from Ontario (ONT) and arrive at Idaho Falls Fanning Field (IDA).

What cabin classes can I book on flights from Ontario to Idaho Falls?

Only Economy Class is available on flights from Ontario to Idaho Falls.

Which airports do connecting flights from Ontario to Idaho Falls pass through?

One-stop flights from Ontario to Idaho Falls most commonly connect through: • Salt Lake City (SLC) - 86% of one-stop connections • Portland (PDX) - 7% of one-stop connections • Denver Intl (DEN) - 2% of one-stop connections • Las Vegas Harry Reid Intl (LAS) - 2% of one-stop connections

Can I save money by using flexible dates for flights from Ontario to Idaho Falls?

Yes. Flexible dates can save you up to 48% on flights from Ontario to Idaho Falls. Tuesday is the cheapest departure day at $318 round-trip on average, while Thursday is the most expensive at $605, a difference of $287. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Ontario to Idaho Falls?

A nonstop flight from Ontario to Idaho Falls takes 00m, covering 717 miles.

Do I need a passport to fly from Ontario to Idaho Falls?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Have flight prices from Ontario to Idaho Falls changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $257 to $1,364. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Ontario to Idaho Falls looking right now?

One-way fares from Ontario to Idaho Falls are currently higher than usual. Average one-way flight prices are about $254, which is 18% above the typical average for this route.

How much time can I save by choosing a different layover airport from Ontario to Idaho Falls?

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 28m, compared with 5h 41m via Portland (PDX) and 7h 11m via Seattle/Tacoma Intl (SEA).

What is the time difference between Ontario and Idaho Falls?

Idaho Falls is 1 hour ahead of Ontario (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Idaho Falls Fanning Field Airport (IDA)?

Idaho Falls Fanning Field Airport (IDA) hosts 5 major car rental companies, with daily rates starting from around $35 for economy cars. Top options include: • Alamo • Hertz • Enterprise Rent-A-Car • Budget • National

How much should I expect to pay for a Ontario to Idaho Falls flight?

Round-trip flights from Ontario to Idaho Falls range from $380 to $578, with an average of $509 over the past 12 months. Anything below $380 counts as a good deal.

What's the cheapest day of the week to fly from Ontario to Idaho Falls?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Ontario to Idaho Falls. It’s 38% cheaper than the average day, while Thursday is the most expensive, with prices 18% higher.

Which airline is the cheapest to fly from Ontario to Idaho Falls?

Delta ($652) offered the cheapest round-trip ticket from Ontario to Idaho Falls in the last 5 days.

What’s the most popular layover airport when flying from Ontario to Idaho Falls?

Salt Lake City (SLC) is the most popular layover for the Ontario to Idaho Falls route. 86% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via SLC.

What is the cheapest layover airport when flying from Ontario to Idaho Falls?

Flights via Las Vegas Harry Reid Intl (LAS) offer the most affordable fares, with an average round-trip price of $314. Based on KAYAK data over the past 3 months.

When flying from Ontario to Idaho Falls which airport offers the shortest layover?

Salt Lake City (SLC) had the shortest average connection time for Ontario to Idaho Falls layovers at 2h 57m over the past 3 months.

$167 CHEAP FLIGHTS from Ontario to Idaho Falls (ONT - IDA)

Save 19% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$257

Typical prices: $380-$578

Multiple Airlines

Mon 11/12Fri 11/16

ONT - IDA • 1 stop

Cheapest one-way

$167

Typical prices: $200-$280

Multiple Airlines

Sun 11/25

ONT - IDA • 2 stops

Nonstop flights

Not available

There are currently no direct flights between Ontario and Idaho Falls. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

February

Cheapest • 36% price drop

August

Most popular

Good to know

Top layover airports

Las Vegas Harry Reid Intl (LAS)

Cheapest • Avg $314 (round-trip)

Salt Lake City (SLC)

Shortest trip • 4h 28m (one-way)

Insights

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Idaho Falls!

Flight Deals

Cheap Flights from Ontario to Idaho Falls (ONT-IDA)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Ontario to Idaho Falls

Thu, Nov 12 - Mon, Nov 16

2:23 pm - 1:30 pmONT Ontario-IDA Idaho Falls Fanning Field

22h 07m1 stop Las Vegas Harry Reid Intl

7:47 pm - 4:21 pmIDA Idaho Falls Fanning Field-ONT Ontario

21h 34m1 stop Las Vegas Harry Reid Intl

$257Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

8:35 pm - 1:30 pmONT Ontario-IDA Idaho Falls Fanning Field

15h 55m1 stop Las Vegas Harry Reid Intl

7:47 pm - 9:40 amIDA Idaho Falls Fanning Field-ONT Ontario

14h 53m1 stop Las Vegas Harry Reid Intl

$265Multiple Airlines

Thu, Nov 12 - Mon, Nov 16

2:23 pm - 8:02 amONT Ontario-IDA Idaho Falls Fanning Field

16h 39m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

7:47 pm - 9:40 amIDA Idaho Falls Fanning Field-ONT Ontario

14h 53m1 stop Las Vegas Harry Reid Intl

$270Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

12:01 pm - 1:30 pmONT Ontario-IDA Idaho Falls Fanning Field

24h 29m2 stops San Francisco Las Vegas Harry Reid Intl

7:47 pm - 4:21 pmIDA Idaho Falls Fanning Field-ONT Ontario

21h 34m1 stop Las Vegas Harry Reid Intl

$313Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

2:23 pm - 1:30 pmONT Ontario-IDA Idaho Falls Fanning Field

22h 07m1 stop Las Vegas Harry Reid Intl

12:43 pm - 9:40 amIDA Idaho Falls Fanning Field-ONT Ontario

21h 57m2 stops Phoenix-Mesa Gateway Las Vegas Harry Reid Intl

$317Multiple Airlines

Thu, Nov 5 - Mon, Nov 9

8:35 pm - 1:30 pmONT Ontario-IDA Idaho Falls Fanning Field

15h 55m1 stop Las Vegas Harry Reid Intl

7:47 pm - 4:21 pmIDA Idaho Falls Fanning Field-ONT Ontario

21h 34m1 stop Las Vegas Harry Reid Intl

$347Multiple Airlines

Thu, Oct 22 - Mon, Oct 26

12:01 pm - 1:34 pmONT Ontario-IDA Idaho Falls Fanning Field

24h 33m2 stops San Francisco Las Vegas Harry Reid Intl

7:30 pm - 9:40 amIDA Idaho Falls Fanning Field-ONT Ontario

15h 10m1 stop Las Vegas Harry Reid Intl

$412Multiple Airlines

Thu, Oct 22 - Mon, Oct 26

3:38 pm - 1:34 pmONT Ontario-IDA Idaho Falls Fanning Field

20h 56m1 stop Las Vegas Harry Reid Intl

7:30 pm - 9:40 amIDA Idaho Falls Fanning Field-ONT Ontario

15h 10m1 stop Las Vegas Harry Reid Intl

$435Multiple Airlines

Fri, Nov 13 - Mon, Nov 16

5:04 pm - 9:59 pmONT Ontario-IDA Idaho Falls Fanning Field

3h 55m1 stop Salt Lake City

6:57 pm - 11:49 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 52m1 stop Salt Lake City

$652Delta

Fri, Nov 13 - Mon, Nov 16

7:00 am - 6:17 pmONT Ontario-IDA Idaho Falls Fanning Field

10h 17m2 stops Seattle/Tacoma Intl Salt Lake City

6:57 pm - 11:49 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 52m1 stop Salt Lake City

$837Delta

Recent last minute flight deals from Ontario to Idaho Falls

Sat, Oct 10 - Mon, Oct 12

1:22 pm - 8:54 pmONT Ontario-IDA Idaho Falls Fanning Field

6h 32m1 stop Denver Intl

4:05 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 53m1 stop Denver Intl

$633United Airlines

Mon, Oct 12 - Tue, Oct 13

5:00 am - 1:24 pmONT Ontario-IDA Idaho Falls Fanning Field

7h 24m1 stop Denver Intl

2:28 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

7h 30m1 stop Denver Intl

$633United Airlines

Tue, Oct 13 - Fri, Oct 16

5:00 am - 1:24 pmONT Ontario-IDA Idaho Falls Fanning Field

7h 24m1 stop Denver Intl

2:28 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

7h 30m1 stop Denver Intl

$633United Airlines

Thu, Oct 8 - Sat, Oct 10

5:00 am - 1:24 pmONT Ontario-IDA Idaho Falls Fanning Field

7h 24m1 stop Denver Intl

4:05 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 53m1 stop Denver Intl

$668United Airlines

Fri, Oct 9 - Sun, Oct 11

1:24 pm - 8:54 pmONT Ontario-IDA Idaho Falls Fanning Field

6h 30m1 stop Denver Intl

4:05 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 53m1 stop Denver Intl

$681United Airlines

Fri, Oct 9 - Fri, Oct 23

11:13 am - 10:59 pmONT Ontario-IDA Idaho Falls Fanning Field

10h 46m1 stop Seattle/Tacoma Intl

1:58 pm - 11:42 pmIDA Idaho Falls Fanning Field-ONT Ontario

10h 44m1 stop Seattle/Tacoma Intl

$688Alaska Airlines

Thu, Oct 8 - Mon, Oct 12

1:24 pm - 8:54 pmONT Ontario-IDA Idaho Falls Fanning Field

6h 30m1 stop Denver Intl

4:05 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 53m1 stop Denver Intl

$703United Airlines

Tue, Oct 13 - Fri, Oct 16

5:00 am - 1:24 pmONT Ontario-IDA Idaho Falls Fanning Field

7h 24m1 stop Denver Intl

4:05 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 53m1 stop Denver Intl

$714United Airlines

Fri, Oct 9 - Sun, Oct 11

1:24 pm - 8:54 pmONT Ontario-IDA Idaho Falls Fanning Field

6h 30m1 stop Denver Intl

4:05 pm - 8:58 pmIDA Idaho Falls Fanning Field-ONT Ontario

5h 53m1 stop Denver Intl

$730United Airlines

Thu, Oct 8 - Sat, Oct 10

1:35 pm - 6:16 pmONT Ontario-IDA Idaho Falls Fanning Field

3h 41m1 stop Salt Lake City

1:05 pm - 10:43 pmIDA Idaho Falls Fanning Field-ONT Ontario

10h 38m2 stops Salt Lake City Seattle/Tacoma Intl

$994Delta

Booking Insights

Price, demand and travel trends for Ontario to Idaho Falls flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

What's the cheapest day of the week to fly from Ontario to Idaho Falls?: Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Ontario to Idaho Falls. It’s 38% cheaper than the average day, while Thursday is the most expensive, with prices 18% higher.

Find deals

Low season	February
High season	August
Cheapest flight	$167

Beat the crowds with an average 80% drop in travelers.

One-way flight from Ontario to Idaho Falls

When to book flights from Ontario to Idaho Falls

Are your dates flexible? Find out the best times to travel from Ontario to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Ontario to Idaho Falls?
Only Economy Class is available on flights from Ontario to Idaho Falls.
How long is a flight from Ontario to Idaho Falls?
A nonstop flight from Ontario to Idaho Falls takes 00m, covering 717 miles.
Do I need a passport to fly from Ontario to Idaho Falls?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.
How much should I expect to pay for a Ontario to Idaho Falls flight?
Round-trip flights from Ontario to Idaho Falls range from $380 to $578, with an average of $509 over the past 12 months. Anything below $380 counts as a good deal.
Have flight prices from Ontario to Idaho Falls changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $257 to $1,364. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Ontario to Idaho Falls looking right now?
One-way fares from Ontario to Idaho Falls are currently higher than usual. Average one-way flight prices are about $254, which is 18% above the typical average for this route.
What car rental options are available at Idaho Falls Fanning Field Airport (IDA)?
Idaho Falls Fanning Field Airport (IDA) hosts 5 major car rental companies, with daily rates starting from around $35 for economy cars. Top options include:

• Alamo
• Hertz
• Enterprise Rent-A-Car
• Budget
• National
Which airports can I use when flying from Ontario to Idaho Falls?
Flights from Ontario to Idaho Falls usually depart from Ontario (ONT) and arrive at Idaho Falls Fanning Field (IDA).
Which airports do connecting flights from Ontario to Idaho Falls pass through?
One-stop flights from Ontario to Idaho Falls most commonly connect through:

• Salt Lake City (SLC) - 86% of one-stop connections
• Portland (PDX) - 7% of one-stop connections
• Denver Intl (DEN) - 2% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 2% of one-stop connections
Can I save money by using flexible dates for flights from Ontario to Idaho Falls?
Yes. Flexible dates can save you up to 48% on flights from Ontario to Idaho Falls. Tuesday is the cheapest departure day at $318 round-trip on average, while Thursday is the most expensive at $605, a difference of $287.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How much time can I save by choosing a different layover airport from Ontario to Idaho Falls?
Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 28m, compared with 5h 41m via Portland (PDX) and 7h 11m via Seattle/Tacoma Intl (SEA).
What is the time difference between Ontario and Idaho Falls?
Idaho Falls is 1 hour ahead of Ontario (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

If your dates are flexible, aim for a Tuesday departure and avoid flying on Thursday. On this route, Tuesday flights average $318, about $287 less than Thursday fares (47% savings) based on the last 12 months.
If you can choose when to travel, plan your Ontario to Idaho Falls trip for February. Fares historically average $324 round-trip in that month - typically $254 less than the most expensive month, which is July (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Idaho Falls Fanning Field Airport.

• Tru by Hilton Idaho Falls
• Comfort Suites Idaho Falls
• Quality Inn Idaho Falls

More options for your flight from Ontario to Idaho Falls

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

Complete your trip to Idaho Falls with a hotel stay or car rental

Car rentals in Idaho Falls

Hotels in Idaho Falls

Vacations in Idaho Falls

ONT - IDA

$167 Find Cheap Flights from Ontario to Idaho Falls - Compare and Save

Everything you should know

Cheap Flights from Ontario to Idaho Falls (ONT-IDA)

Recent round-trip flight deals from Ontario to Idaho Falls

Recent one-way flight deals from Ontario to Idaho Falls

Recent last minute flight deals from Ontario to Idaho Falls

Price, demand and travel trends for Ontario to Idaho Falls flights

What's the cheapest day of the week to fly from Ontario to Idaho Falls?

Which airline is the cheapest to fly from Ontario to Idaho Falls?

What’s the most popular layover airport when flying from Ontario to Idaho Falls?

What is the cheapest layover airport when flying from Ontario to Idaho Falls?

When flying from Ontario to Idaho Falls which airport offers the shortest layover?

Key details for Ontario to Idaho Falls flights

Low season

High season

Cheapest flight

When to book flights from Ontario to Idaho Falls

Your Ontario to Idaho Falls flight questions, answered

Your guide to booking Ontario to Idaho Falls flights

More options for your flight from Ontario to Idaho Falls

Complete your trip to Idaho Falls with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Ontario to Idaho Falls

Find direct flights to and from Ontario and Idaho Falls

Flights from domestic origins to Idaho Falls

Flights to other popular destinations