What airlines fly to Ontario?

JetBlue, American Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Boston according to our data. JetBlue is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 9 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Boston Logan Intl to Ontario?

Delta and United Airlines are the most popular carriers operating from Boston Logan Intl to Ontario

When did momondo last update prices for flights from Boston Logan Intl Airport to Ontario Airport?

Prices for flights from Boston Logan Intl Airport to Ontario Airport are updated daily.

How many operators does momondo search for flights from Boston Logan Intl Airport to Ontario Airport?

There are 5 operators available for flights from Boston Logan Intl Airport to Ontario Airport as of September 2026.

How old do you have to be to fly from Boston Logan Intl Airport to Ontario Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$163 Cheap Flights from Boston to Ontario in 2026/27

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Find the cheapest flights from Boston to Los Angeles

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11:47 am - 10:29 amBOS Boston Logan Intl-ONT Ontario

25h 42m3 stops Orlando Houston George Bush Intcntl Denver Intl

11:52 am - 11:47 amONT Ontario-BOS Boston Logan Intl

20h 55m2 stops Denver Intl Minneapolis St Paul

$380Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

11:47 am - 10:29 amBOS Boston Logan Intl-ONT Ontario

25h 42m2 stops Orlando Denver Intl

6:25 am - 10:47 amONT Ontario-BOS Boston Logan Intl

25h 22m2 stops Denver Intl Minneapolis St Paul

$381Multiple Airlines

Sat, Oct 24 - Tue, Nov 3

11:55 am - 6:47 pmBOS Boston Logan Intl-ONT Ontario

9h 52m1 stop Chicago O'Hare Intl

6:00 am - 4:49 pmONT Ontario-BOS Boston Logan Intl

7h 49m1 stop San Francisco

$382United Airlines

Tue, Nov 10 - Wed, Nov 11

11:35 am - 6:44 pmBOS Boston Logan Intl-ONT Ontario

10h 09m1 stop Chicago O'Hare Intl

6:53 pm - 8:00 amONT Ontario-BOS Boston Logan Intl

10h 07m1 stop San Francisco

$382United Airlines

Sat, Dec 5 - Tue, Jan 5

2:29 pm - 10:57 pmBOS Boston Logan Intl-ONT Ontario

11h 28m1 stop Dallas/Fort Worth

10:30 am - 10:28 pmONT Ontario-BOS Boston Logan Intl

8h 58m1 stop Dallas/Fort Worth

$387American Airlines

Tue, Nov 3 - Sat, Nov 7

6:00 am - 1:31 pmBOS Boston Logan Intl-ONT Ontario

10h 31m1 stop Dallas/Fort Worth

7:49 pm - 5:52 amONT Ontario-BOS Boston Logan Intl

7h 03m1 stop Phoenix Sky Harbor Intl

$387American Airlines

Thu, Nov 5 - Sun, Nov 8

1:10 pm - 6:10 pmBOS Boston Logan Intl-ONT Ontario

8h 00m1 stop Chicago Midway

1:50 pm - 11:45 pmONT Ontario-BOS Boston Logan Intl

6h 55m1 stop Denver Intl

$387Southwest

Wed, Feb 10 - Wed, Feb 17

4:55 pm - 10:20 pmBOS Boston Logan Intl-ONT Ontario

8h 25m1 stop Denver Intl

1:20 pm - 1:10 amONT Ontario-BOS Boston Logan Intl

8h 50m1 stop Denver Intl

$387Southwest

Fri, Oct 30 - Sun, Nov 1

2:54 pm - 9:55 pmBOS Boston Logan Intl-ONT Ontario

10h 01m1 stop Atlanta Hartsfield-Jackson

1:11 pm - 12:13 amONT Ontario-BOS Boston Logan Intl

8h 02m1 stop Salt Lake City

$387Delta

Sun, Dec 6 - Tue, Dec 15

5:30 am - 11:06 amBOS Boston Logan Intl-ONT Ontario

8h 36m1 stop Atlanta Hartsfield-Jackson

6:00 am - 4:38 pmONT Ontario-BOS Boston Logan Intl

7h 38m1 stop Salt Lake City

$387Delta

Wed, Oct 28 - Sun, Nov 1

Cheap last minute flights

Enter your travel dates to find the best prices.

10:03 am - 7:03 pmBOS Boston Logan Intl-ONT Ontario

12h 00m1 stop Seattle/Tacoma Intl

2:13 pm - 7:26 amONT Ontario-BOS Boston Logan Intl

14h 13m1 stop Seattle/Tacoma Intl

$532Alaska Airlines

Fri, Oct 2 - Sat, Oct 10

7:45 am - 1:25 pmBOS Boston Logan Intl-ONT Ontario

8h 40m1 stop Dallas/Fort Worth

12:37 pm - 11:34 pmONT Ontario-BOS Boston Logan Intl

7h 57m1 stop Dallas/Fort Worth

$545American Airlines

Tue, Sep 29 - Wed, Sep 30

10:03 am - 7:03 pmBOS Boston Logan Intl-ONT Ontario

12h 00m1 stop Seattle/Tacoma Intl

2:13 pm - 7:26 amONT Ontario-BOS Boston Logan Intl

14h 13m1 stop Seattle/Tacoma Intl

$550Alaska Airlines

Wed, Sep 30 - Sat, Oct 10

12:59 pm - 6:53 pmBOS Boston Logan Intl-ONT Ontario

8h 54m1 stop Dallas/Fort Worth

7:20 am - 10:24 pmONT Ontario-BOS Boston Logan Intl

12h 04m2 stops Dallas/Fort Worth Charlotte Douglas

$551American Airlines

Tue, Sep 29 - Wed, Sep 30

6:05 am - 12:14 pmBOS Boston Logan Intl-ONT Ontario

9h 09m1 stop Salt Lake City

5:15 pm - 6:30 amONT Ontario-BOS Boston Logan Intl

10h 15m1 stop Salt Lake City

$565Delta

Sat, Oct 3 - Sat, Oct 3

7:55 am - 5:19 pmBOS Boston Logan Intl-ONT Ontario

12h 24m1 stop Seattle/Tacoma Intl

7:05 am - 6:00 pmONT Ontario-BOS Boston Logan Intl

7h 55m1 stop Atlanta Hartsfield-Jackson

$565Delta

Tue, Sep 29 - Sat, Oct 3

9:40 am - 4:00 pmBOS Boston Logan Intl-ONT Ontario

9h 20m2 stops Chicago Midway Las Vegas Harry Reid Intl

9:15 am - 9:30 pmONT Ontario-BOS Boston Logan Intl

9h 15m2 stops Phoenix Sky Harbor Intl Chicago Midway

$575Southwest

Sat, Oct 3 - Tue, Oct 6

4:15 pm - 10:59 pmBOS Boston Logan Intl-ONT Ontario

9h 44m1 stop San Francisco

6:32 pm - 6:11 amONT Ontario-BOS Boston Logan Intl

8h 39m1 stop San Francisco

$586United Airlines

Wed, Sep 30 - Mon, Oct 5

3:20 pm - 10:05 pmBOS Boston Logan Intl-ONT Ontario

9h 45m2 stops Chicago Midway Denver Intl

2:50 pm - 1:15 amONT Ontario-BOS Boston Logan Intl

7h 25m1 stop Denver Intl

$591Southwest

Wed, Sep 30 - Mon, Oct 5

2:15 pm - 10:49 pmBOS Boston Logan Intl-ONT Ontario

11h 34m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

7:00 am - 5:37 pmONT Ontario-BOS Boston Logan Intl

7h 37m1 stop Chicago O'Hare Intl

$591United Airlines

Tue, Sep 29 - Fri, Oct 2

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Delta flights from Boston to Ontario

Our best Delta deals on Boston to Ontario flight tickets

Delta

Oct 15

BOS6:05 amBoston Logan Intl

9h 31m

1 stop

ONT12:36 pmOntario

Oct 20

ONT1:35 pmOntario

7h 24m

1 stop

BOS11:59 pmBoston Logan Intl

$387

Delta

Dec 9

BOS7:50 amBoston Logan Intl

12h 25m

1 stop

ONT5:15 pmOntario

Jan 2

ONT11:59 amOntario

9h 14m

1 stop

BOS12:13 amBoston Logan Intl

$407

Delta

Oct 20

BOS7:55 amBoston Logan Intl

12h 17m

1 stop

ONT5:12 pmOntario

Oct 22

ONT6:00 amOntario

7h 38m

1 stop

BOS4:38 pmBoston Logan Intl

$419

American Airlines flights from Boston to Ontario

Our best American Airlines deals on Boston to Ontario flight tickets

American Airlines

Dec 4

BOS1:11 pmBoston Logan Intl

7h 59m

1 stop

ONT6:10 pmOntario

Dec 9

ONT1:23 pmOntario

7h 23m

1 stop

BOS11:46 pmBoston Logan Intl

$388

American Airlines

Sep 29

BOS7:45 amBoston Logan Intl

8h 40m

1 stop

ONT1:25 pmOntario

Sep 30

ONT12:37 pmOntario

7h 57m

1 stop

BOS11:34 pmBoston Logan Intl

$545

American Airlines

Sep 29

BOS12:59 pmBoston Logan Intl

8h 54m

1 stop

ONT6:53 pmOntario

Sep 30

ONT7:20 amOntario

12h 04m

2 stops

BOS10:24 pmBoston Logan Intl

$551

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 10/24

11:47 am-10:29 am

3 stops25h 42m

Ontario

Sat 10/31

11:52 am-11:47 am

2 stops20h 55m

$380

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 10/24

11:47 am-10:29 am

2 stops25h 42m

Ontario

Tue 11/3

6:25 am-10:47 am

2 stops25h 22m

$381

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 11/10

11:55 am-6:47 pm

1 stop9h 52m

Ontario

Wed 11/11

6:00 am-4:49 pm

1 stop7h 49m

$382

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 12/5

11:35 am-6:44 pm

1 stop10h 09m

Ontario

Tue 1/5

6:53 pm-8:00 am

1 stop10h 07m

$382

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 11/3

2:29 pm-10:57 pm

1 stop11h 28m

Ontario

Sat 11/7

10:30 am-10:28 pm

1 stop8h 58m

$387

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 11/5

6:00 am-1:31 pm

1 stop10h 31m

Ontario

Sun 11/8

7:49 pm-5:52 am

1 stop7h 03m

$387

Quickest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Wed 2/10

1:10 pm-6:10 pm

1 stop8h 00m

Ontario

Wed 2/17

1:50 pm-11:45 pm

1 stop6h 55m

$387

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Fri 10/30

4:55 pm-10:20 pm

1 stop8h 25m

Ontario

Sun 11/1

1:20 pm-1:10 am

1 stop8h 50m

$387

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sun 12/6

2:54 pm-9:55 pm

1 stop10h 01m

Ontario

Tue 12/15

1:11 pm-12:13 am

1 stop8h 02m

$387

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Wed 10/28

5:30 am-11:06 am

1 stop8h 36m

Ontario

Sun 11/1

6:00 am-4:38 pm

1 stop7h 38m

$387

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Boston to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Boston and Ontario?

Prices are currently typical for flights on this route.

Typical prices usually range from $326 to $572.
The lowest price recently found on this route was $380.

What is the cheapest month to fly to Ontario?

In general, February is the cheapest month to fly from Boston to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $352. If you aren’t able to travel during the month of February, then book flights to Ontario from Boston during January instead. Flights to Ontario in January, while not as cheap as those in February, still average around $370.

How far in advance should I book a flight from Boston to Ontario?

You are more likely to see cheaper flights to Ontario from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $507 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Boston for as low as $326 on momondo.

How have Boston to Ontario flight prices changed over time?

As of September 2026, prices for Boston to Ontario flights are approximately 22% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Boston to Ontario (BOS to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Ontario

Best Price Found	$163
Fastest flight time	8h 04m
Direct flights	None

The best one-way flight to Ontario from Boston in the past 72 hours is $163. The best round-trip flight deal from Boston to Ontario found on momondo in the last 72 hours is $380.

The fastest flight from Boston to Ontario takes 8h 04m

There are no direct flights from Boston to Ontario. There are no popular flight routes from Boston to Ontario.

Search flight deals

Frequently asked questions about flying from Boston to Ontario

How far is Boston Logan Intl to Ontario by plane?
The distance between Boston Logan Intl and Ontario is about 2558.5 mi. A reasonable flight in good conditions will take 8h 04m.
When did momondo last update prices for flights from Boston Logan Intl Airport to Ontario Airport?
Prices for flights from Boston Logan Intl Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Boston Logan Intl Airport to Ontario Airport?
There are 5 operators available for flights from Boston Logan Intl Airport to Ontario Airport as of September 2026.
How old do you have to be to fly from Boston Logan Intl Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Boston to Ontario?
momondo data reveals that the most frequently booked airline on the route from Boston to Ontario is American Airlines, representing 36% of all bookings. The subsequent popular airlines are Southwest at 28%, Delta at 16%, and United Airlines at 14%.

Best airlines flying from Boston to Ontario

Compare and see reviews for airlines that fly from Boston to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $233	Free Cancellation	Rating 7.8 8,611 reviews	Search Delta flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 10,251 reviews	Search United Airlines flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.0 12,099 reviews	Search American Airlines flights
JetBlue	PriceFrom $298	Free Cancellation	Rating 7.1 3,040 reviews	Search JetBlue flights
Southwest	PriceFrom $317	Free Cancellation	Rating 8.0 4,201 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Boston.

Can I find flights from Boston to Ontario with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ontario from Boston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boston to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Boston to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ontario trip

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Cheap flights from Boston to Los Angeles from $163

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Los Angeles departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from Boston to Ontario

Our best Delta deals on Boston to Ontario flight tickets

American Airlines flights from Boston to Ontario

Our best American Airlines deals on Boston to Ontario flight tickets

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How to get the cheapest flight ticket from Boston to Ontario

What is the typical price of a round-trip flight between Boston and Ontario?

What is the cheapest month to fly to Ontario?

How far in advance should I book a flight from Boston to Ontario?

How have Boston to Ontario flight prices changed over time?

What is the cheapest airline that flies from Boston Logan Intl to Ontario?

What airlines fly to Ontario?

When to book flights from Boston to Ontario

Cheap Boston to Ontario (BOS to ONT) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Boston to Ontario

Best airlines flying from Boston to Ontario

Compare and see reviews for airlines that fly from Boston to Ontario with momondo

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California

Fly your favorite airline to Los Angeles

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Los Angeles

List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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