What airlines fly to Ontario?

JetBlue, American Airlines and Delta 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 42% 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.

Which layover airport has the shortest connection time from Boston to Ontario?

Denver (DEN) has the shortest average layover time for this route: 0h 53m.

Which layover airport has the shortest travel time from Boston to Ontario?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 7h 50m.

Which layover airport offers the lowest fares from Boston to Ontario?

Flights via Denver (DEN) offer the lowest average round-trip price of $355.

Which airport is the most popular layover for flights between Boston and Ontario?

Phoenix (PHX) was the most common stop: 80% of momondo users choosing 1-stop flights on this route connected there.

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

Southwest, United Airlines, and JetBlue 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 June 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.

$114 Cheap Flights from Boston to Ontario in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $478 to $355. The lowest price recently found on this route was $359.

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7:12 am - 2:09 pm

BOS

ONT

9h 57m

1 stop

6:05 pm - 6:09 am

ONT

BOS

9h 04m

1 stop

$359Alaska Airlines

Tue, Sep 1 - Sat, Sep 5

7:00 am - 12:02 pm

BOS

ONT

8h 02m

1 stop

12:59 pm - 11:24 pm

ONT

BOS

7h 25m

1 stop

$367American Airlines

Fri, Jul 17 - Wed, Aug 19

6:00 am - 1:28 pm

BOS

ONT

10h 28m

1 stop

12:35 pm - 11:59 pm

ONT

BOS

8h 24m

1 stop

$369American Airlines

Wed, Jul 1 - Tue, Jul 7

10:45 am - 10:39 pm

BOS

ONT

14h 54m

2 stops

12:00 pm - 12:05 am

ONT

BOS

9h 05m

1 stop

$372Alaska Airlines

Wed, Dec 2 - Tue, Dec 8

4:30 pm - 10:35 pm

BOS

ONT

9h 05m

1 stop

11:50 pm - 11:21 am

ONT

BOS

8h 31m

1 stop

$373JetBlue

Thu, Aug 6 - Sun, Aug 9

5:00 am - 12:40 pm

BOS

ONT

10h 40m

1 stop

5:30 am - 6:00 pm

ONT

BOS

9h 30m

2 stops

$374Southwest

Tue, Jun 30 - Tue, Jul 14

5:09 pm - 10:36 pm

BOS

ONT

8h 27m

1 stop

11:51 pm - 11:33 am

ONT

BOS

8h 42m

1 stop

$377JetBlue

Fri, Jul 10 - Mon, Jul 13

5:15 am - 12:30 pm

BOS

ONT

10h 15m

1 stop

11:55 pm - 11:30 am

ONT

BOS

8h 35m

1 stop

$378Southwest

Sat, Jul 4 - Fri, Jul 10

7:05 am - 2:25 pm

BOS

ONT

10h 20m

2 stops

8:40 am - 9:55 pm

ONT

BOS

10h 15m

2 stops

$379Southwest

Wed, Dec 2 - Tue, Dec 8

6:00 am - 12:12 pm

BOS

ONT

9h 12m

1 stop

6:39 pm - 6:21 am

ONT

BOS

8h 42m

1 stop

$380United Airlines

Mon, Jun 29 - Fri, Jul 17

Alaska Airlines flights from Boston to Ontario

Our best Alaska Airlines deals on Boston to Ontario flight tickets

Alaska Airlines

Sep 1

BOS7:12 amBoston Logan Intl

9h 57m

1 stop

ONT2:09 pmOntario

Sep 5

ONT6:05 pmOntario

9h 04m

1 stop

BOS6:09 amBoston Logan Intl

$359

Alaska Airlines

Dec 2

BOS10:45 amBoston Logan Intl

14h 54m

2 stops

ONT10:39 pmOntario

Dec 8

ONT12:00 pmOntario

9h 05m

1 stop

BOS12:05 amBoston Logan Intl

$372

Alaska Airlines

Sep 16

BOS7:59 pmBoston Logan Intl

23h 11m

2 stops

ONT4:10 pmOntario

Sep 23

ONT10:47 amOntario

16h 22m

1 stop

BOS6:09 amBoston Logan Intl

$399

American Airlines flights from Boston to Ontario

Our best American Airlines deals on Boston to Ontario flight tickets

American Airlines

Jul 17

BOS7:00 amBoston Logan Intl

8h 02m

1 stop

ONT12:02 pmOntario

Aug 19

ONT12:59 pmOntario

7h 25m

1 stop

BOS11:24 pmBoston Logan Intl

$367

American Airlines

Jul 1

BOS6:00 amBoston Logan Intl

10h 28m

1 stop

ONT1:28 pmOntario

Jul 7

ONT12:35 pmOntario

8h 24m

1 stop

BOS11:59 pmBoston Logan Intl

$369

American Airlines

Jun 29

BOS5:05 pmBoston Logan Intl

7h 52m

1 stop

ONT9:57 pmOntario

Jul 7

ONT1:11 pmOntario

7h 03m

1 stop

BOS11:14 pmBoston Logan Intl

$401

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 9/1

7:12 am-2:09 pm

1 stop9h 57m

Ontario

Sat 9/5

6:05 pm-6:09 am

1 stop9h 04m

$359

Quickest round-trip

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 7/17

7:00 am-12:02 pm

1 stop8h 02m

Ontario

Wed 8/19

12:59 pm-11:24 pm

1 stop7h 25m

$367

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 7/1

6:00 am-1:28 pm

1 stop10h 28m

Ontario

Tue 7/7

12:35 pm-11:59 pm

1 stop8h 24m

$369

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 12/2

10:45 am-10:39 pm

2 stops14h 54m

Ontario

Tue 12/8

12:00 pm-12:05 am

1 stop9h 05m

$372

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 8/6

4:30 pm-10:35 pm

1 stop9h 05m

Ontario

Sun 8/9

11:50 pm-11:21 am

1 stop8h 31m

$373

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 6/30

5:00 am-12:40 pm

1 stop10h 40m

Ontario

Tue 7/14

5:30 am-6:00 pm

2 stops9h 30m

$374

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 7/10

5:09 pm-10:36 pm

1 stop8h 27m

Ontario

Mon 7/13

11:51 pm-11:33 am

1 stop8h 42m

$377

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 7/4

5:15 am-12:30 pm

1 stop10h 15m

Ontario

Fri 7/10

11:55 pm-11:30 am

1 stop8h 35m

$378

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 12/2

7:05 am-2:25 pm

2 stops10h 20m

Ontario

Tue 12/8

8:40 am-9:55 pm

2 stops10h 15m

$379

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Mon 6/29

6:00 am-12:12 pm

1 stop9h 12m

Ontario

Fri 7/17

6:39 pm-6:21 am

1 stop8h 42m

$380

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

Layovers

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

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 $317. 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 $366.

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 $472 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 $345 on momondo.

How have Boston to Ontario flight prices changed over time?

As of June 2026, prices for Boston to Ontario flights are approximately 4% 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

Fastest flight time	8h 03m
Direct flights	None

The fastest flight from Boston to Ontario takes 8h 03m

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

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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 03m.
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 June 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 40% of all bookings. The subsequent popular airlines are Southwest at 26%, United Airlines at 15%, and Delta at 13%.

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 $149	Free Cancellation	Rating 7.9 8,395 reviews	Search Delta flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 9,783 reviews	Search United Airlines flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.1 11,642 reviews	Search American Airlines flights
Southwest	PriceFrom $305	Free Cancellation	Rating 7.9 4,246 reviews	Search Southwest flights
JetBlue	PriceFrom $319	Free Cancellation	Rating 7.1 2,977 reviews	Search JetBlue 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 $123

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 8/29. 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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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?

Which airport is the most popular layover for flights between Boston and Ontario?

Which layover airport offers the lowest fares from Boston to Ontario?

Which layover airport has the shortest travel time from Boston to Ontario?

Which layover airport has the shortest connection time from Boston to Ontario?

When to book flights from Boston to Ontario

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

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

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

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