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

Frontier and Delta 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 41% 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 October 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.

$184 Cheap Flights from Boston to Ontario in 2026/27

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7:30 am - 12:34 pmBOS Boston Logan Intl-ONT Ontario

8h 04m1 stop Denver Intl

6:35 pm - 7:59 amONT Ontario-BOS Boston Logan Intl

10h 24m1 stop San Francisco

$372United Airlines

Wed, Dec 9 - Wed, Feb 17

6:00 am - 11:55 amBOS Boston Logan Intl-ONT Ontario

8h 55m1 stop Dallas/Fort Worth

1:24 pm - 11:42 pmONT Ontario-BOS Boston Logan Intl

7h 18m1 stop Phoenix Sky Harbor Intl

$377American Airlines

Thu, Jan 28 - Mon, Feb 1

7:15 am - 12:40 pmBOS Boston Logan Intl-ONT Ontario

8h 25m1 stop Chicago Midway

5:25 am - 4:10 pmONT Ontario-BOS Boston Logan Intl

7h 45m1 stop Chicago Midway

$377Southwest

Mon, Feb 22 - Thu, Feb 25

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

8h 10m1 stop Denver Intl

12:45 pm - 12:45 amONT Ontario-BOS Boston Logan Intl

9h 00m1 stop Denver Intl

$377Southwest

Tue, Dec 15 - Wed, Dec 23

6:25 pm - 11:48 pmBOS Boston Logan Intl-ONT Ontario

8h 23m1 stop Salt Lake City

7:00 am - 5:48 pmONT Ontario-BOS Boston Logan Intl

7h 48m1 stop Atlanta Hartsfield-Jackson

$377Delta

Mon, Feb 1 - Tue, Feb 9

7:05 am - 1:57 pmBOS Boston Logan Intl-ONT Ontario

9h 52m1 stop Seattle/Tacoma Intl

7:00 am - 5:48 pmONT Ontario-BOS Boston Logan Intl

7h 48m1 stop Atlanta Hartsfield-Jackson

$377Delta

Sat, Jan 30 - Thu, Feb 4

1:32 pm - 9:40 pmBOS Boston Logan Intl-ONT Ontario

11h 08m1 stop Houston George Bush Intcntl

1:29 pm - 11:50 pmONT Ontario-BOS Boston Logan Intl

7h 21m1 stop Denver Intl

$377United Airlines

Thu, Nov 12 - Sat, Nov 14

3:31 pm - 11:46 pmBOS Boston Logan Intl-ONT Ontario

11h 15m1 stop Dallas/Fort Worth

11:59 pm - 1:31 pmONT Ontario-BOS Boston Logan Intl

10h 32m1 stop Dallas/Fort Worth

$377American Airlines

Thu, Nov 12 - Mon, Nov 16

6:28 pm - 10:38 amBOS Boston Logan Intl-ONT Ontario

19h 10m1 stop Seattle/Tacoma Intl

11:36 am - 5:40 amONT Ontario-BOS Boston Logan Intl

15h 04m1 stop Seattle/Tacoma Intl

$386Alaska Airlines

Sat, Jan 23 - Sat, Jan 30

4:56 pm - 10:00 amBOS Boston Logan Intl-ONT Ontario

20h 04m1 stop Portland

7:00 am - 5:40 amONT Ontario-BOS Boston Logan Intl

19h 40m1 stop Seattle/Tacoma Intl

$386Alaska Airlines

Tue, Jan 26 - Fri, Jan 29

Cheap last minute flights

Enter your travel dates to find the best prices.

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

$471Delta

Tue, Oct 20 - Tue, Nov 3

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

8h 36m1 stop Atlanta Hartsfield-Jackson

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

7h 24m1 stop Salt Lake City

$471Delta

Tue, Oct 20 - Mon, Nov 2

6:40 pm - 10:17 amBOS Boston Logan Intl-ONT Ontario

18h 37m1 stop Seattle/Tacoma Intl

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

9h 46m1 stop Seattle/Tacoma Intl

$480Alaska Airlines

Tue, Oct 20 - Tue, Oct 27

6:40 pm - 10:17 amBOS Boston Logan Intl-ONT Ontario

18h 37m1 stop Seattle/Tacoma Intl

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

9h 46m1 stop Seattle/Tacoma Intl

$481Alaska Airlines

Tue, Oct 20 - Tue, Oct 27

12:55 pm - 5:45 pmBOS Boston Logan Intl-ONT Ontario

7h 50m1 stop Chicago Midway

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

7h 25m1 stop Denver Intl

$606Southwest

Tue, Oct 20 - Thu, Oct 22

6:45 am - 2:30 pmBOS Boston Logan Intl-ONT Ontario

10h 45m2 stops Baltimore/Washington Nashville Intl

11:55 pm - 11:10 amONT Ontario-BOS Boston Logan Intl

8h 15m1 stop Chicago Midway

$611Southwest

Tue, Oct 20 - Thu, Oct 22

7:22 am - 8:58 pmBOS Boston Logan Intl-ONT Ontario

16h 36m2 stops Los Angeles Denver Intl

9:25 am - 9:24 pmONT Ontario-BOS Boston Logan Intl

8h 59m1 stop San Francisco

$611United Airlines

Tue, Oct 20 - Sat, Oct 31

7:22 am - 8:58 pmBOS Boston Logan Intl-ONT Ontario

16h 36m2 stops Los Angeles Denver Intl

9:25 am - 11:59 pmONT Ontario-BOS Boston Logan Intl

11h 34m2 stops San Francisco Washington, D.C. Dulles Intl

$616United Airlines

Tue, Oct 20 - Sat, Oct 31

6:28 am - 11:53 amBOS Boston Logan Intl-ONT Ontario

8h 25m1 stop Dallas/Fort Worth

12:43 pm - 11:55 pmONT Ontario-BOS Boston Logan Intl

8h 12m1 stop Dallas/Fort Worth

$627American Airlines

Tue, Oct 20 - Tue, Oct 27

6:28 am - 11:53 amBOS Boston Logan Intl-ONT Ontario

8h 25m1 stop Dallas/Fort Worth

6:15 am - 4:46 pmONT Ontario-BOS Boston Logan Intl

7h 31m1 stop Phoenix Sky Harbor Intl

$696American Airlines

Sun, Oct 18 - Tue, Oct 27

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Delta flights from Boston to Ontario

Our best Delta deals on Boston to Ontario flight tickets

Delta

Dec 15

BOS6:45 pmBoston Logan Intl

8h 12m

1 stop

ONT11:57 pmOntario

Jan 8

ONT5:05 pmOntario

10h 06m

1 stop

BOS6:11 amBoston Logan Intl

$377

Delta

Dec 3

BOS5:20 amBoston Logan Intl

8h 47m

1 stop

ONT11:07 amOntario

Dec 9

ONT12:20 pmOntario

9h 55m

1 stop

BOS1:15 amBoston Logan Intl

$378

Delta

Oct 24

BOS5:30 amBoston Logan Intl

8h 36m

1 stop

ONT11:06 amOntario

Nov 3

ONT1:35 pmOntario

7h 24m

1 stop

BOS11:59 pmBoston Logan Intl

$382

Frontier flights from Boston to Ontario

Our best Frontier deals on Boston to Ontario flight tickets

Frontier

Dec 5

BOS11:08 amBoston Logan Intl

27h 43m

2 stops

ONT11:51 amOntario

Dec 10

ONT6:00 amOntario

25h 39m

2 stops

BOS10:39 amBoston Logan Intl

$389

Frontier

Nov 3

BOS12:15 pmBoston Logan Intl

14h 36m

2 stops

ONT11:51 pmOntario

Nov 6

ONT6:30 amOntario

25h 02m

2 stops

BOS10:32 amBoston Logan Intl

$431

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Wed 12/9

7:30 am-12:34 pm

1 stop8h 04m

Ontario

Wed 2/17

6:35 pm-7:59 am

1 stop10h 24m

$372

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 1/28

6:00 am-11:55 am

1 stop8h 55m

Ontario

Mon 2/1

1:24 pm-11:42 pm

1 stop7h 18m

$377

Quickest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Mon 2/22

7:15 am-12:40 pm

1 stop8h 25m

Ontario

Thu 2/25

5:25 am-4:10 pm

1 stop7h 45m

$377

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 12/15

5:00 am-10:10 am

1 stop8h 10m

Ontario

Wed 12/23

12:45 pm-12:45 am

1 stop9h 00m

$377

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Mon 2/1

6:25 pm-11:48 pm

1 stop8h 23m

Ontario

Tue 2/9

7:00 am-5:48 pm

1 stop7h 48m

$377

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 1/30

7:05 am-1:57 pm

1 stop9h 52m

Ontario

Thu 2/4

7:00 am-5:48 pm

1 stop7h 48m

$377

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 11/12

1:32 pm-9:40 pm

1 stop11h 08m

Ontario

Sat 11/14

1:29 pm-11:50 pm

1 stop7h 21m

$377

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 11/12

3:31 pm-11:46 pm

1 stop11h 15m

Ontario

Mon 11/16

11:59 pm-1:31 pm

1 stop10h 32m

$377

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 1/23

6:28 pm-10:38 am

1 stop19h 10m

Ontario

Sat 1/30

11:36 am-5:40 am

1 stop15h 04m

$386

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 1/26

4:56 pm-10:00 am

1 stop20h 04m

Ontario

Fri 1/29

7:00 am-5:40 am

1 stop19h 40m

$386

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 $393 to $572.
The lowest price recently found on this route was $263.

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 $500 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 October 2026, prices for Boston to Ontario flights are approximately 14% more expensive 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	$184
Fastest flight time	7h 51m
Direct flights	None

The best one-way flight to Ontario from Boston in the past 72 hours is $184. The best round-trip flight deal from Boston to Ontario found on momondo in the last 72 hours is $372.

The fastest flight from Boston to Ontario takes 7h 51m

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 7h 51m.
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 October 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 37% of all bookings. The subsequent popular airlines are Southwest at 28%, Delta at 17%, and United Airlines 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 $233	Free Cancellation	Rating 7.8 8,654 reviews	Search Delta flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 10,366 reviews	Search United Airlines flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.0 12,168 reviews	Search American Airlines flights
JetBlue	PriceFrom $298	Free Cancellation	Rating 7.1 3,054 reviews	Search JetBlue flights
Southwest	PriceFrom $317	Free Cancellation	Rating 7.9 4,215 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 $184

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 11/9. 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

Frontier flights from Boston to Ontario

Our best Frontier 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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