Which airports can I use when flying from Monterey to Ontario?

Flights from Monterey to Ontario usually depart from Monterey Regional (MRY) and arrive at Ontario (ONT).

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

Only Economy Class is available on flights from Monterey to Ontario.

Which airports do connecting flights from Monterey to Ontario pass through?

Connecting flights from Monterey to Ontario most commonly pass through: • San Francisco (SFO) - 94% of one-stop connections • Las Vegas Harry Reid Intl (LAS) - 6% of one-stop connections Together, these airports account for 100% of one-stop bookings on this route.

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

Yes. Being flexible with your travel dates can save you up to 35% on the Monterey to Ontario route. Wednesday is the cheapest departure day at $298 round-trip on average, while Sunday is the most expensive at $458, a difference of $160. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Ontario?

Some of the most popular sights in Ontario are Ontario Convention Center, Ontario Mills and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

How long is a flight from Monterey to Ontario?

There are currently no nonstop flights available from Monterey to Ontario. Flights with 1 layover take between 4h 06m and 15h 19m in total, depending on the connection.

Do I need a passport to fly from Monterey to Ontario?

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 Monterey to Ontario 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 $289 to $1,014. That means the highest observed fare was about 4x higher than the lowest one.

How are flight prices from Monterey to Ontario looking right now?

One-way fares from Monterey to Ontario are currently lower than usual. Average one-way flight prices are about $259, which is 6% below the typical average for this route.

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

Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time at 4h 06m, compared with 15h 19m via Las Vegas Harry Reid Intl (LAS).

What car rental options are available at Ontario Airport (ONT)?

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include: · Fox · Thrifty · Europcar · Dollar · Alamo

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

Round-trip flights from Monterey to Ontario range from $298 to $368, with an average of $314 over the past 12 months. Anything below $298 counts as a good deal.

What is the cheapest airline to fly from Monterey to Ontario?

United Airlines ($289) offered the cheapest round-trip ticket from Monterey to Ontario in the last 5 days.

What is the most popular layover airport when flying from Monterey to Ontario?

San Francisco (SFO) is the most popular layover for the Monterey to Ontario route. 94% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via SFO.

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

Flights via San Francisco (SFO) offer the most affordable fares, with an average round-trip price of $338. Based on KAYAK data over the past 3 months.

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

San Francisco (SFO) had the shortest average connection time for Monterey to Ontario layovers at 176 minutes over the past 3 months.

$173 CHEAP FLIGHTS from Monterey to Ontario (MRY - ONT)

Save 21% 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

$289

Typical prices: $298-$368

United Airlines

Wed 9/26Fri 9/28

MRY - ONT • 1 stop

Cheapest one-way

$173

Typical prices: $229-$372

Multiple Airlines

Tue 11/20

MRY - ONT • 1 stop

When to travel

February

Cheapest • 24% price drop

September

Most popular

Good to know

Top layover airports

San Francisco (SFO)

Cheapest • Avg $338 (round-trip)

Las Vegas Harry Reid Intl (LAS)

Shortest trip • 15h 19m (one-way)

Insights

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We hope you love your trip to Ontario!

Flight Deals

Cheap Flights from Monterey to Ontario (MRY-ONT)

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 Monterey to Ontario

Thu, Oct 29 - Sun, Nov 1

2:25 pm - 8:15 pmMRY Monterey Regional-ONT Ontario

5h 50m1 stop San Francisco

9:25 am - 1:04 pmONT Ontario-MRY Monterey Regional

3h 39m1 stop San Francisco

$289United Airlines

Sat, Sep 26 - Mon, Sep 28

11:59 am - 5:46 pmMRY Monterey Regional-ONT Ontario

5h 47m1 stop San Francisco

1:52 pm - 6:20 pmONT Ontario-MRY Monterey Regional

4h 28m1 stop San Francisco

$289United Airlines

Fri, Oct 9 - Sun, Oct 11

3:31 pm - 8:31 pmMRY Monterey Regional-ONT Ontario

5h 00m1 stop San Francisco

6:07 am - 11:19 amONT Ontario-MRY Monterey Regional

5h 12m1 stop San Francisco

$296United Airlines

Fri, Oct 23 - Mon, Oct 26

3:31 pm - 8:31 pmMRY Monterey Regional-ONT Ontario

5h 00m1 stop San Francisco

1:35 pm - 7:19 pmONT Ontario-MRY Monterey Regional

5h 44m1 stop San Francisco

$296United Airlines

Wed, Sep 9 - Sat, Sep 12

12:21 pm - 6:16 pmMRY Monterey Regional-ONT Ontario

5h 55m1 stop San Francisco

1:56 pm - 5:16 pmONT Ontario-MRY Monterey Regional

3h 20m1 stop San Francisco

$319United Airlines

Fri, Oct 30 - Sun, Nov 1

3:41 pm - 9:05 amMRY Monterey Regional-ONT Ontario

17h 24m1 stop Las Vegas Harry Reid Intl

8:35 pm - 3:41 pmONT Ontario-MRY Monterey Regional

19h 06m1 stop Las Vegas Harry Reid Intl

$355Multiple Airlines

Fri, Sep 18 - Sun, Sep 20

6:45 pm - 10:51 pmMRY Monterey Regional-ONT Ontario

4h 06m1 stop San Francisco

6:08 am - 10:15 amONT Ontario-MRY Monterey Regional

4h 07m1 stop San Francisco

$359United Airlines

Fri, Oct 23 - Sat, Oct 24

6:55 pm - 10:51 pmMRY Monterey Regional-ONT Ontario

3h 56m1 stop San Francisco

1:22 pm - 9:05 pmONT Ontario-MRY Monterey Regional

7h 43m1 stop Denver Intl

$359United Airlines

Sat, Oct 10 - Sun, Oct 11

11:59 am - 3:22 pmMRY Monterey Regional-ONT Ontario

3h 23m1 stop San Francisco

6:07 am - 11:19 amONT Ontario-MRY Monterey Regional

5h 12m1 stop San Francisco

$359United Airlines

Fri, Oct 23 - Mon, Oct 26

3:41 pm - 10:29 amMRY Monterey Regional-ONT Ontario

18h 48m2 stops Las Vegas Harry Reid Intl Denver Intl

8:00 am - 3:41 pmONT Ontario-MRY Monterey Regional

7h 41m1 stop Las Vegas Harry Reid Intl

$487Multiple Airlines

Recent last minute flight deals from Monterey to Ontario

Fri, Aug 28 - Sun, Aug 30

12:15 pm - 6:11 pmMRY Monterey Regional-ONT Ontario

5h 56m1 stop San Francisco

1:56 pm - 5:16 pmONT Ontario-MRY Monterey Regional

3h 20m1 stop San Francisco

$349United Airlines

Thu, Aug 27 - Thu, Sep 10

6:45 pm - 10:59 pmMRY Monterey Regional-ONT Ontario

4h 14m1 stop San Francisco

1:53 pm - 5:16 pmONT Ontario-MRY Monterey Regional

3h 23m1 stop San Francisco

$409United Airlines

Sat, Aug 29 - Tue, Sep 1

3:36 pm - 8:01 pmMRY Monterey Regional-ONT Ontario

4h 25m1 stop San Francisco

1:18 pm - 9:10 pmONT Ontario-MRY Monterey Regional

7h 52m1 stop Denver Intl

$409United Airlines

Sat, Aug 29 - Wed, Sep 2

3:36 pm - 8:01 pmMRY Monterey Regional-ONT Ontario

4h 25m1 stop San Francisco

1:56 pm - 5:16 pmONT Ontario-MRY Monterey Regional

3h 20m1 stop San Francisco

$409United Airlines

Sat, Aug 29 - Mon, Aug 31

3:36 pm - 8:01 pmMRY Monterey Regional-ONT Ontario

4h 25m1 stop San Francisco

6:08 am - 10:15 amONT Ontario-MRY Monterey Regional

4h 07m1 stop San Francisco

$409United Airlines

Thu, Aug 27 - Sun, Aug 30

3:36 pm - 8:01 pmMRY Monterey Regional-ONT Ontario

4h 25m1 stop San Francisco

1:56 pm - 5:16 pmONT Ontario-MRY Monterey Regional

3h 20m1 stop San Francisco

$419United Airlines

Thu, Aug 27 - Mon, Aug 31

6:45 pm - 10:59 pmMRY Monterey Regional-ONT Ontario

4h 14m1 stop San Francisco

1:56 pm - 5:16 pmONT Ontario-MRY Monterey Regional

3h 20m1 stop San Francisco

$419United Airlines

Fri, Aug 28 - Sun, Aug 30

6:45 pm - 10:59 pmMRY Monterey Regional-ONT Ontario

4h 14m1 stop San Francisco

9:01 am - 3:01 pmONT Ontario-MRY Monterey Regional

6h 00m1 stop San Francisco

$429United Airlines

Thu, Aug 27 - Sun, Aug 30

6:23 pm - 11:04 amMRY Monterey Regional-ONT Ontario

16h 41m1 stop Seattle/Tacoma Intl

12:00 pm - 5:46 pmONT Ontario-MRY Monterey Regional

5h 46m1 stop Seattle/Tacoma Intl

$1,187Alaska Airlines

Mon, Aug 31 - Tue, Sep 1

6:23 pm - 11:04 amMRY Monterey Regional-ONT Ontario

16h 41m1 stop Seattle/Tacoma Intl

4:27 pm - 11:59 pmONT Ontario-MRY Monterey Regional

7h 32m2 stops Santa Rosa Sonoma County San Diego

$1,261Alaska Airlines

Booking Insights

Price, demand and travel trends for Monterey to Ontario flights

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

Prices

Airlines

Layovers

How much is a round-trip flight from Monterey to Ontario?

Round-trip flights from Monterey to Ontario start at $289. Prices are below average for this route right now, with typical round-trip fares ranging from $298 to $368. The lowest price found in the past 5 days was $289 on United Airlines.

Find deals

Low season	May
High season	September
Cheapest flight	$173

Most popular time to fly and prices are also 5% lower on average.

Flight from Monterey to Ontario

When to book flights from Monterey to Ontario

Are your dates flexible? Find out the best times to travel from Monterey to Ontario 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.

Which airports can I use when flying from Monterey to Ontario?
Flights from Monterey to Ontario usually depart from Monterey Regional (MRY) and arrive at Ontario (ONT).
What cabin classes can I book on flights from Monterey to Ontario?
Only Economy Class is available on flights from Monterey to Ontario.
Which airports do connecting flights from Monterey to Ontario pass through?
Connecting flights from Monterey to Ontario most commonly pass through:

• San Francisco (SFO) - 94% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 6% of one-stop connections
Together, these airports account for 100% of one-stop bookings on this route.
Can I save money by using flexible dates for flights from Monterey to Ontario?
Yes. Being flexible with your travel dates can save you up to 35% on the Monterey to Ontario route. Wednesday is the cheapest departure day at $298 round-trip on average, while Sunday is the most expensive at $458, a difference of $160. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Ontario?
Some of the most popular sights in Ontario are Ontario Convention Center, Ontario Mills and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.
How long is a flight from Monterey to Ontario?
There are currently no nonstop flights available from Monterey to Ontario. Flights with 1 layover take between 4h 06m and 15h 19m in total, depending on the connection.
Do I need a passport to fly from Monterey to Ontario?
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 Monterey to Ontario 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 $289 to $1,014. That means the highest observed fare was about 4x higher than the lowest one.
How are flight prices from Monterey to Ontario looking right now?
One-way fares from Monterey to Ontario are currently lower than usual. Average one-way flight prices are about $259, which is 6% below the typical average for this route.
How much time can I save by choosing a different layover airport from Monterey to Ontario?
Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time at 4h 06m, compared with 15h 19m via Las Vegas Harry Reid Intl (LAS).
What car rental options are available at Ontario Airport (ONT)?
Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:
· Fox
· Thrifty
· Europcar
· Dollar
· Alamo
How much should I expect to pay for a Monterey to Ontario flight?
Round-trip flights from Monterey to Ontario range from $298 to $368, with an average of $314 over the past 12 months. Anything below $298 counts as a good deal.

If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $298 - about $160 less than Sunday (35% savings) based on the last 12 months.
If you can choose when to travel, plan your Monterey to Ontario trip for February. Fares historically average $239 round-trip in that month - typically $295 less than the most expensive month, which is March (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.
- Azure Hotel & Suites, Trademark Collection by Wyndham
- La Quinta Inn & Suites by Wyndham Ontario Airport
- Holiday Inn Ontario Airport By IHG

Everything you need to know for your flight from Monterey to Ontario

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Complete your trip

Direct Flights

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Information on your arrival and departure airports

Monterey (MRY)

Ontario (ONT)

MRY - ONT

$173 Find Cheap Flights from Monterey to Ontario - Compare and Save

Everything you should know

Cheap Flights from Monterey to Ontario (MRY-ONT)

Recent round-trip flight deals from Monterey to Ontario

Recent one-way flight deals from Monterey to Ontario

Recent last minute flight deals from Monterey to Ontario

Price, demand and travel trends for Monterey to Ontario flights

How much is a round-trip flight from Monterey to Ontario?

What is the cheapest airline to fly from Monterey to Ontario?

What is the most popular layover airport when flying from Monterey to Ontario?

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

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

Key details for Monterey to Ontario flights

Low season

High season

Cheapest flight

When to book flights from Monterey to Ontario

Your Monterey to Ontario flight questions, answered

Your guide to booking Monterey to Ontario flights

Everything you need to know for your flight from Monterey to Ontario

Information on your arrival and departure airports

Cabin class types available on flights from Monterey to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Find direct flights to and from Monterey and Ontario

Flights to other popular destinations

Flights from domestic origins to Ontario

Choose which airport to fly into in Ontario

Find deals for your return flight