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

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

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.

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.

$121 Cheap Flights from Boston to Ontario in 2026/27

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10:00 am - 6:10 pmBOS Boston Logan Intl-ONT Ontario

11h 10m1 stop Phoenix Sky Harbor Intl

6:00 am - 7:33 pmONT Ontario-BOS Boston Logan Intl

10h 33m1 stop Dallas/Fort Worth

$251American Airlines

Tue, Nov 3 - Sat, Nov 7

5:00 am - 10:10 amBOS Boston Logan Intl-ONT Ontario

8h 10m1 stop Denver Intl

6:50 am - 4:50 pmONT Ontario-BOS Boston Logan Intl

7h 00m1 stop Denver Intl

$251Southwest

Tue, Nov 10 - Tue, Nov 17

9:03 am - 6:00 pmBOS Boston Logan Intl-ONT Ontario

11h 57m1 stop Seattle/Tacoma Intl

11:13 am - 11:59 pmONT Ontario-BOS Boston Logan Intl

9h 46m1 stop Seattle/Tacoma Intl

$251Alaska Airlines

Tue, Oct 27 - Sat, Oct 31

9:03 am - 6:00 pmBOS Boston Logan Intl-ONT Ontario

11h 57m1 stop Seattle/Tacoma Intl

11:13 am - 11:59 pmONT Ontario-BOS Boston Logan Intl

9h 46m1 stop Seattle/Tacoma Intl

$251Alaska Airlines

Wed, Oct 28 - Sat, Oct 31

5:15 am - 10:20 amBOS Boston Logan Intl-ONT Ontario

8h 05m1 stop Denver Intl

6:30 am - 7:25 pmONT Ontario-BOS Boston Logan Intl

9h 55m1 stop Chicago Midway

$252Southwest

Sat, Oct 24 - Sat, Oct 31

6:36 am - 12:38 pmBOS Boston Logan Intl-ONT Ontario

9h 02m1 stop Phoenix Sky Harbor Intl

1:27 pm - 11:46 pmONT Ontario-BOS Boston Logan Intl

7h 19m1 stop Phoenix Sky Harbor Intl

$268American Airlines

Sat, Nov 7 - Thu, Nov 12

6:05 am - 12:36 pmBOS Boston Logan Intl-ONT Ontario

9h 31m1 stop Salt Lake City

1:35 pm - 11:59 pmONT Ontario-BOS Boston Logan Intl

7h 24m1 stop Salt Lake City

$297Delta

Tue, Oct 27 - Thu, Oct 29

6:05 am - 12:36 pmBOS Boston Logan Intl-ONT Ontario

9h 31m1 stop Salt Lake City

5:03 pm - 6:25 amONT Ontario-BOS Boston Logan Intl

10h 22m1 stop Salt Lake City

$297Delta

Tue, Oct 27 - Tue, Oct 27

10:00 am - 5:47 pmBOS Boston Logan Intl-ONT Ontario

10h 47m1 stop San Francisco

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

10h 07m1 stop San Francisco

$356United Airlines

Tue, Jan 19 - Tue, Jan 26

7:00 am - 12:33 pmBOS Boston Logan Intl-ONT Ontario

8h 33m1 stop Denver Intl

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

10h 07m1 stop San Francisco

$356United Airlines

Tue, Jan 5 - Tue, Jan 12

Cheap last minute flights

Enter your travel dates to find the best prices.

4:00 pm - 10:40 pmBOS Boston Logan Intl-ONT Ontario

9h 40m1 stop Seattle/Tacoma Intl

10:00 pm - 9:42 amONT Ontario-BOS Boston Logan Intl

8h 42m1 stop Atlanta Hartsfield-Jackson

$476Delta

Wed, Sep 23 - Sun, Sep 27

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

9h 09m1 stop Salt Lake City

11:54 am - 12:29 amONT Ontario-BOS Boston Logan Intl

9h 35m1 stop Seattle/Tacoma Intl

$476Delta

Wed, Sep 23 - Mon, Sep 28

5:01 pm - 10:59 pmBOS Boston Logan Intl-ONT Ontario

8h 58m1 stop Chicago O'Hare Intl

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

8h 39m1 stop San Francisco

$476United Airlines

Wed, Sep 23 - Mon, Sep 28

4:48 pm - 11:16 amBOS Boston Logan Intl-ONT Ontario

21h 28m1 stop Seattle/Tacoma Intl

7:12 am - 6:09 amONT Ontario-BOS Boston Logan Intl

19h 57m1 stop Portland

$477Alaska Airlines

Tue, Sep 22 - Tue, Sep 29

7:12 am - 2:16 pmBOS Boston Logan Intl-ONT Ontario

10h 04m1 stop Seattle/Tacoma Intl

3:14 pm - 7:39 amONT Ontario-BOS Boston Logan Intl

13h 25m1 stop Seattle/Tacoma Intl

$479Alaska Airlines

Tue, Sep 22 - Tue, Sep 29

12:37 pm - 8:53 pmBOS Boston Logan Intl-ONT Ontario

11h 16m2 stops Chicago O'Hare Intl Denver Intl

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

7h 37m1 stop Chicago O'Hare Intl

$481United Airlines

Wed, Sep 23 - Tue, Sep 29

9:25 am - 4:05 pmBOS Boston Logan Intl-ONT Ontario

9h 40m2 stops Denver Intl Las Vegas Harry Reid Intl

8:35 am - 9:30 pmONT Ontario-BOS Boston Logan Intl

9h 55m2 stops Phoenix Sky Harbor Intl Baltimore/Washington

$486Southwest

Wed, Sep 23 - Tue, Sep 29

4:45 pm - 10:05 pmBOS Boston Logan Intl-ONT Ontario

8h 20m1 stop Denver Intl

8:40 pm - 9:30 amONT Ontario-BOS Boston Logan Intl

9h 50m2 stops Phoenix Sky Harbor Intl Baltimore/Washington

$491Southwest

Tue, Sep 22 - Mon, Sep 28

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

$551American Airlines

Sun, Sep 20 - Wed, Sep 23

7:00 am - 12:06 pmBOS Boston Logan Intl-ONT Ontario

8h 06m1 stop Phoenix Sky Harbor Intl

1:04 pm - 11:30 pmONT Ontario-BOS Boston Logan Intl

7h 26m1 stop Phoenix Sky Harbor Intl

$556American Airlines

Wed, Sep 23 - Wed, Sep 30

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Delta flights from Boston to Ontario

Our best Delta deals on Boston to Ontario flight tickets

Delta

Oct 24

BOS6:05 amBoston Logan Intl

9h 31m

1 stop

ONT12:36 pmOntario

Oct 31

ONT6:00 amOntario

7h 38m

1 stop

BOS4:38 pmBoston Logan Intl

$297

Delta

Jan 29

BOS4:20 pmBoston Logan Intl

8h 54m

1 stop

ONT10:14 pmOntario

Feb 10

ONT7:00 amOntario

9h 21m

1 stop

BOS7:21 pmBoston Logan Intl

$308

Delta

Oct 6

BOS6:05 amBoston Logan Intl

9h 31m

1 stop

ONT12:36 pmOntario

Oct 13

ONT12:16 pmOntario

10h 04m

1 stop

BOS1:20 amBoston Logan Intl

$328

Alaska Airlines flights from Boston to Ontario

Our best Alaska Airlines deals on Boston to Ontario flight tickets

Alaska Airlines

Nov 10

BOS7:13 amBoston Logan Intl

11h 00m

1 stop

ONT3:13 pmOntario

Nov 18

ONT6:00 amOntario

14h 58m

1 stop

BOS11:58 pmBoston Logan Intl

$260

Alaska Airlines

Oct 21

BOS6:40 pmBoston Logan Intl

18h 37m

1 stop

ONT10:17 amOntario

Oct 24

ONT11:13 amOntario

9h 46m

1 stop

BOS11:59 pmBoston Logan Intl

$261

Alaska Airlines

Oct 27

BOS6:40 pmBoston Logan Intl

18h 37m

1 stop

ONT10:17 amOntario

Nov 3

ONT6:00 amOntario

14h 58m

1 stop

BOS11:58 pmBoston Logan Intl

$262

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 11/3

10:00 am-6:10 pm

1 stop11h 10m

Ontario

Sat 11/7

6:00 am-7:33 pm

1 stop10h 33m

$251

Quickest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 11/10

5:00 am-10:10 am

1 stop8h 10m

Ontario

Tue 11/17

6:50 am-4:50 pm

1 stop7h 00m

$251

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 10/27

9:03 am-6:00 pm

1 stop11h 57m

Ontario

Sat 10/31

11:13 am-11:59 pm

1 stop9h 46m

$251

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Wed 10/28

9:03 am-6:00 pm

1 stop11h 57m

Ontario

Sat 10/31

11:13 am-11:59 pm

1 stop9h 46m

$251

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 10/24

5:15 am-10:20 am

1 stop8h 05m

Ontario

Sat 10/31

6:30 am-7:25 pm

1 stop9h 55m

$252

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 11/7

6:36 am-12:38 pm

1 stop9h 02m

Ontario

Thu 11/12

1:27 pm-11:46 pm

1 stop7h 19m

$268

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 10/27

6:05 am-12:36 pm

1 stop9h 31m

Ontario

Thu 10/29

1:35 pm-11:59 pm

1 stop7h 24m

$297

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 10/27

6:05 am-12:36 pm

1 stop9h 31m

Ontario

Tue 10/27

5:03 pm-6:25 am

1 stop10h 22m

$297

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 1/19

10:00 am-5:47 pm

1 stop10h 47m

Ontario

Tue 1/26

6:53 pm-8:00 am

1 stop10h 07m

$356

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 1/5

7:00 am-12:33 pm

1 stop8h 33m

Ontario

Tue 1/12

6:53 pm-8:00 am

1 stop10h 07m

$356

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 low for flights on this route.

Typical prices usually range from $366 to $597.
The lowest price recently found on this route was $251.

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 $506 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	$121
Fastest flight time	8h 08m
Direct flights	None

The best one-way flight to Ontario from Boston in the past 72 hours is $121. The best round-trip flight deal from Boston to Ontario found on momondo in the last 72 hours is $251.

The fastest flight from Boston to Ontario takes 8h 08m

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 08m.
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 27%, Delta at 15%, and United Airlines at 15%.

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 8,579 reviews	Search Delta flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 10,214 reviews	Search United Airlines flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.1 12,075 reviews	Search American Airlines flights
JetBlue	PriceFrom $298	Free Cancellation	Rating 7.1 3,035 reviews	Search JetBlue flights
Southwest	PriceFrom $317	Free Cancellation	Rating 8.0 4,188 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 $121

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 2/24. 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

Alaska Airlines flights from Boston to Ontario

Our best Alaska Airlines deals on Boston to Ontario flight tickets

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Use the filters below to find and compare flights from Boston to Ontario that are best for you.

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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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