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

Alaska Airlines, United Airlines, and Southwest 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 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.

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.

$132 Cheap Flights from Boston to Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boston to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:25 pm - 11:13 pmBOS Boston Logan Intl-ONT Ontario

10h 48m1 stop Dallas/Fort Worth

10:38 am - 11:54 pmONT Ontario-BOS Boston Logan Intl

10h 16m1 stop Dallas/Fort Worth

$263American Airlines

Wed, Jan 20 - Sat, Jan 23

6:40 am - 12:41 pmBOS Boston Logan Intl-ONT Ontario

9h 01m1 stop Phoenix Sky Harbor Intl

6:00 am - 5:02 pmONT Ontario-BOS Boston Logan Intl

8h 02m1 stop Dallas/Fort Worth

$263American Airlines

Thu, Dec 31 - Thu, Jan 14

8:05 am - 3:33 pmBOS Boston Logan Intl-ONT Ontario

10h 28m1 stop San Francisco

1:40 pm - 11:58 pmONT Ontario-BOS Boston Logan Intl

7h 18m1 stop Denver Intl

$263United Airlines

Mon, Nov 23 - Wed, Dec 2

7:00 am - 3:20 pmBOS Boston Logan Intl-ONT Ontario

11h 20m1 stop Seattle/Tacoma Intl

12:00 pm - 11:59 pmONT Ontario-BOS Boston Logan Intl

8h 59m1 stop Seattle/Tacoma Intl

$263Alaska Airlines

Tue, Jan 12 - Wed, Feb 24

7:13 am - 3:13 pmBOS Boston Logan Intl-ONT Ontario

11h 00m1 stop Seattle/Tacoma Intl

4:09 pm - 5:40 amONT Ontario-BOS Boston Logan Intl

10h 31m1 stop Seattle/Tacoma Intl

$263Alaska Airlines

Tue, Nov 10 - Wed, Nov 18

9:00 am - 4:25 pmBOS Boston Logan Intl-ONT Ontario

10h 25m1 stop Austin Bergstrom

1:20 pm - 1:15 amONT Ontario-BOS Boston Logan Intl

8h 55m1 stop Denver Intl

$264Southwest

Sat, Dec 12 - Thu, Dec 17

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

8h 10m1 stop Denver Intl

2:45 pm - 1:15 amONT Ontario-BOS Boston Logan Intl

7h 30m1 stop Denver Intl

$264Southwest

Thu, Dec 10 - Thu, Dec 17

1:29 pm - 8:51 pmBOS Boston Logan Intl-ONT Ontario

10h 22m2 stops Chicago O'Hare Intl Denver Intl

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

7h 49m1 stop San Francisco

$268United Airlines

Tue, Nov 17 - Thu, Nov 19

6:45 pm - 11:49 pmBOS Boston Logan Intl-ONT Ontario

8h 04m1 stop Salt Lake City

12:20 pm - 11:20 pmONT Ontario-BOS Boston Logan Intl

8h 00m1 stop Atlanta Hartsfield-Jackson

$297Delta

Wed, Nov 18 - Thu, Dec 3

6:05 am - 12:17 pmBOS Boston Logan Intl-ONT Ontario

9h 12m1 stop Salt Lake City

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

8h 02m1 stop Salt Lake City

$297Delta

Tue, Nov 17 - Wed, Dec 2

Cheap last minute flights

Enter your travel dates to find the best prices.

6:50 pm - 11:55 pmBOS Boston Logan Intl-ONT Ontario

8h 05m1 stop Salt Lake City

11:10 pm - 11:00 amONT Ontario-BOS Boston Logan Intl

8h 50m1 stop Atlanta Hartsfield-Jackson

$441Delta

Wed, Oct 28 - Mon, Nov 9

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

9h 31m1 stop Salt Lake City

11:10 pm - 9:45 amONT Ontario-BOS Boston Logan Intl

7h 35m1 stop Atlanta Hartsfield-Jackson

$462Delta

Thu, Oct 29 - Mon, Nov 9

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

11h 57m1 stop Seattle/Tacoma Intl

4:09 pm - 5:40 amONT Ontario-BOS Boston Logan Intl

10h 31m1 stop Seattle/Tacoma Intl

$470Alaska Airlines

Wed, Oct 28 - Tue, Nov 17

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

18h 37m1 stop Seattle/Tacoma Intl

12:02 pm - 11:58 pmONT Ontario-BOS Boston Logan Intl

8h 56m1 stop Seattle/Tacoma Intl

$499Alaska Airlines

Tue, Oct 27 - Tue, Nov 3

8:45 am - 3:16 pmBOS Boston Logan Intl-ONT Ontario

9h 31m1 stop Phoenix Sky Harbor Intl

10:25 am - 9:26 pmONT Ontario-BOS Boston Logan Intl

8h 01m1 stop Dallas/Fort Worth

$557American Airlines

Tue, Oct 27 - Wed, Oct 28

8:25 am - 8:51 pmBOS Boston Logan Intl-ONT Ontario

15h 26m2 stops Los Angeles Denver Intl

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

7h 49m1 stop San Francisco

$559United Airlines

Wed, Oct 28 - Tue, Nov 17

8:25 am - 8:51 pmBOS Boston Logan Intl-ONT Ontario

15h 26m2 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

$564United Airlines

Wed, Oct 28 - Tue, Nov 17

7:29 am - 1:30 pmBOS Boston Logan Intl-ONT Ontario

9h 01m1 stop Dallas/Fort Worth

6:00 am - 8:56 pmONT Ontario-BOS Boston Logan Intl

11h 56m2 stops Dallas/Fort Worth Charlotte Douglas

$568American Airlines

Tue, Oct 27 - Wed, Oct 28

1:25 pm - 8:45 pmBOS Boston Logan Intl-ONT Ontario

10h 20m2 stops Chicago Midway Las Vegas Harry Reid Intl

5:40 am - 7:25 pmONT Ontario-BOS Boston Logan Intl

10h 45m2 stops Las Vegas Harry Reid Intl Chicago Midway

$595Southwest

Sat, Oct 24 - Sat, Oct 31

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

8h 05m1 stop Denver Intl

8:05 am - 11:15 pmONT Ontario-BOS Boston Logan Intl

12h 10m1 stop Denver Intl

$606Southwest

Sat, Oct 24 - Fri, Oct 30

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Southwest flights from Boston to Ontario

Our best Southwest deals on Boston to Ontario flight tickets

Southwest

Dec 12

BOS9:00 amBoston Logan Intl

10h 25m

1 stop

ONT4:25 pmOntario

Dec 15

ONT1:55 pmOntario

6h 50m

1 stop

BOS11:45 pmBoston Logan Intl

$264

Southwest

Nov 10

BOS5:00 amBoston Logan Intl

9h 55m

2 stops

ONT11:55 amOntario

Nov 10

ONT1:55 pmOntario

6h 50m

1 stop

BOS11:45 pmBoston Logan Intl

$268

Southwest

Dec 12

BOS5:25 amBoston Logan Intl

11h 45m

2 stops

ONT2:10 pmOntario

Dec 19

ONT2:35 pmOntario

7h 00m

1 stop

BOS12:35 amBoston Logan Intl

$269

Delta flights from Boston to Ontario

Our best Delta deals on Boston to Ontario flight tickets

Delta

Dec 3

BOS6:05 amBoston Logan Intl

9h 12m

1 stop

ONT12:17 pmOntario

Dec 8

ONT1:11 pmOntario

8h 02m

1 stop

BOS12:13 amBoston Logan Intl

$297

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

$298

Delta

Feb 5

BOS4:20 pmBoston Logan Intl

8h 54m

1 stop

ONT10:14 pmOntario

Feb 13

ONT7:00 amOntario

9h 21m

1 stop

BOS7:21 pmBoston Logan Intl

$315

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Wed 1/20

3:25 pm-11:13 pm

1 stop10h 48m

Ontario

Sat 1/23

10:38 am-11:54 pm

1 stop10h 16m

$263

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 12/31

6:40 am-12:41 pm

1 stop9h 01m

Ontario

Thu 1/14

6:00 am-5:02 pm

1 stop8h 02m

$263

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Mon 11/23

8:05 am-3:33 pm

1 stop10h 28m

Ontario

Wed 12/2

1:40 pm-11:58 pm

1 stop7h 18m

$263

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 1/12

7:00 am-3:20 pm

1 stop11h 20m

Ontario

Wed 2/24

12:00 pm-11:59 pm

1 stop8h 59m

$263

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 11/10

7:13 am-3:13 pm

1 stop11h 00m

Ontario

Wed 11/18

4:09 pm-5:40 am

1 stop10h 31m

$263

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 12/12

9:00 am-4:25 pm

1 stop10h 25m

Ontario

Thu 12/17

1:20 pm-1:15 am

1 stop8h 55m

$264

Quickest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 12/10

5:00 am-10:10 am

1 stop8h 10m

Ontario

Thu 12/17

2:45 pm-1:15 am

1 stop7h 30m

$264

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 11/17

1:29 pm-8:51 pm

2 stops10h 22m

Ontario

Thu 11/19

6:00 am-4:49 pm

1 stop7h 49m

$268

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Wed 11/18

6:45 pm-11:49 pm

1 stop8h 04m

Ontario

Thu 12/3

12:20 pm-11:20 pm

1 stop8h 00m

$297

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Tue 11/17

6:05 am-12:17 pm

1 stop9h 12m

Ontario

Wed 12/2

1:11 pm-12:13 am

1 stop8h 02m

$297

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 $390 to $599.
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 $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 $502 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	$132
Fastest flight time	8h 04m
Direct flights	None

The best one-way flight to Ontario from Boston in the past 72 hours is $132. The best round-trip flight deal from Boston to Ontario found on momondo in the last 72 hours is $263.

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 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 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 8,667 reviews	Search Delta flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.3 10,414 reviews	Search United Airlines flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.0 12,189 reviews	Search American Airlines flights
JetBlue	PriceFrom $298	Free Cancellation	Rating 7.1 3,063 reviews	Search JetBlue flights
Southwest	PriceFrom $317	Free Cancellation	Rating 7.9 4,211 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

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sun 11/22

Sun 11/29

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Boston

Complete your trip

Feeling lucky

Cheap flights from Boston to Los Angeles from $132

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 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Boston to Los Angeles

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Southwest flights from Boston to Ontario

Our best Southwest deals on Boston to Ontario flight tickets

Delta flights from Boston to Ontario

Our best Delta deals on Boston to Ontario flight tickets

momondo Fare Finder

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

See travel insights to Los Angeles from

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.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Boston

According to popular flight searches on momondo this year

Complete your trip to Los Angeles

Explore popular destinations other users love

According to popular flight searches on momondo this year