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

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.

$150 Cheap Flights from Boston to Ontario in 2026/27

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5:20 am - 11:07 amBOS Boston Logan Intl-ONT Ontario

8h 47m1 stop Atlanta Hartsfield-Jackson

12:20 pm - 1:10 amONT Ontario-BOS Boston Logan Intl

9h 50m1 stop Atlanta Hartsfield-Jackson

$297Delta

Thu, Dec 3 - Wed, Dec 9

11:08 am - 12:17 amBOS Boston Logan Intl-ONT Ontario

16h 09m2 stops Orlando Denver Intl

2:53 pm - 10:39 amONT Ontario-BOS Boston Logan Intl

16h 46m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

$328Frontier

Thu, Dec 3 - Wed, Dec 9

5:20 am - 11:07 amBOS Boston Logan Intl-ONT Ontario

8h 47m1 stop Atlanta Hartsfield-Jackson

12:20 pm - 1:10 amONT Ontario-BOS Boston Logan Intl

9h 50m1 stop Atlanta Hartsfield-Jackson

$334Delta

Thu, Dec 3 - Wed, Dec 9

6:26 am - 12:38 pmBOS Boston Logan Intl-ONT Ontario

9h 12m1 stop Phoenix Sky Harbor Intl

1:23 pm - 11:45 pmONT Ontario-BOS Boston Logan Intl

7h 22m1 stop Phoenix Sky Harbor Intl

$335American Airlines

Mon, Dec 7 - Mon, Dec 14

6:00 am - 1:19 pmBOS Boston Logan Intl-ONT Ontario

10h 19m1 stop Dallas/Fort Worth

9:35 am - 8:51 pmONT Ontario-BOS Boston Logan Intl

8h 16m1 stop Phoenix Sky Harbor Intl

$335American Airlines

Mon, Nov 23 - Wed, Dec 2

4:56 pm - 11:54 pmBOS Boston Logan Intl-ONT Ontario

9h 58m1 stop Portland

6:00 am - 11:59 pmONT Ontario-BOS Boston Logan Intl

14h 59m1 stop Seattle/Tacoma Intl

$335Alaska Airlines

Sat, Dec 5 - Tue, Dec 8

2:59 pm - 9:11 pmBOS Boston Logan Intl-ONT Ontario

9h 12m1 stop Denver Intl

6:40 pm - 7:57 amONT Ontario-BOS Boston Logan Intl

10h 17m1 stop San Francisco

$350United Airlines

Fri, Dec 4 - Wed, Dec 9

2:59 pm - 9:11 pmBOS Boston Logan Intl-ONT Ontario

9h 12m1 stop Denver Intl

5:00 am - 5:55 pmONT Ontario-BOS Boston Logan Intl

9h 55m2 stops Denver Intl Chicago O'Hare Intl

$360United Airlines

Fri, Dec 4 - Wed, Dec 9

5:00 am - 2:05 pmBOS Boston Logan Intl-ONT Ontario

12h 05m1 stop Denver Intl

8:40 am - 10:15 pmONT Ontario-BOS Boston Logan Intl

10h 35m2 stops Phoenix Sky Harbor Intl Nashville Intl

$367Southwest

Mon, Nov 23 - Wed, Dec 2

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

8h 10m1 stop Denver Intl

8:05 am - 10:05 pmONT Ontario-BOS Boston Logan Intl

11h 00m2 stops Denver Intl Chicago Midway

$376Southwest

Thu, Dec 3 - Sun, Dec 6

Cheap last minute flights

Enter your travel dates to find the best prices.

11:15 am - 4:23 pmBOS Boston Logan Intl-ONT Ontario

8h 08m1 stop Salt Lake City

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

8h 50m1 stop Atlanta Hartsfield-Jackson

$460Delta

Wed, Nov 4 - Mon, Nov 16

11:15 am - 4:23 pmBOS Boston Logan Intl-ONT Ontario

8h 08m1 stop Salt Lake City

1:15 pm - 11:57 pmONT Ontario-BOS Boston Logan Intl

7h 42m1 stop Salt Lake City

$460Delta

Wed, Nov 4 - Wed, Nov 18

9:03 am - 6:21 pmBOS Boston Logan Intl-ONT Ontario

12h 18m1 stop Seattle/Tacoma Intl

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

10h 31m1 stop Seattle/Tacoma Intl

$460Alaska Airlines

Tue, Nov 3 - Wed, Nov 18

9:03 am - 6:17 pmBOS Boston Logan Intl-ONT Ontario

12h 14m1 stop Seattle/Tacoma Intl

4:09 pm - 6:20 amONT Ontario-BOS Boston Logan Intl

11h 11m1 stop Seattle/Tacoma Intl

$460Alaska Airlines

Wed, Nov 4 - Thu, Nov 19

4:52 pm - 10:12 pmBOS Boston Logan Intl-ONT Ontario

8h 20m1 stop Charlotte Douglas

1:23 pm - 11:46 pmONT Ontario-BOS Boston Logan Intl

7h 23m1 stop Phoenix Sky Harbor Intl

$505American Airlines

Wed, Nov 4 - Wed, Nov 11

4:52 pm - 10:12 pmBOS Boston Logan Intl-ONT Ontario

8h 20m1 stop Charlotte Douglas

6:30 am - 4:45 pmONT Ontario-BOS Boston Logan Intl

7h 15m1 stop Phoenix Sky Harbor Intl

$507American Airlines

Tue, Nov 3 - Tue, Nov 10

5:30 am - 12:33 pmBOS Boston Logan Intl-ONT Ontario

10h 03m2 stops Washington, D.C. Dulles Intl Denver Intl

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

8h 59m1 stop San Francisco

$522United Airlines

Thu, Nov 5 - Sun, Nov 8

5:00 am - 1:00 pmBOS Boston Logan Intl-ONT Ontario

11h 00m2 stops Denver Intl Las Vegas Harry Reid Intl

8:45 pm - 9:45 amONT Ontario-BOS Boston Logan Intl

10h 00m2 stops Las Vegas Harry Reid Intl Nashville Intl

$583Southwest

Thu, Nov 5 - Sun, Nov 8

1:51 pm - 8:15 pmBOS Boston Logan Intl-ONT Ontario

9h 24m1 stop San Francisco

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

8h 59m1 stop San Francisco

$585United Airlines

Wed, Nov 4 - Tue, Nov 10

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

8h 10m1 stop Denver Intl

8:40 am - 9:55 pmONT Ontario-BOS Boston Logan Intl

10h 15m2 stops Las Vegas Harry Reid Intl Baltimore/Washington

$590Southwest

Wed, Nov 4 - Tue, Nov 10

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Southwest flights from Boston to Ontario

Our best Southwest deals on Boston to Ontario flight tickets

Southwest

Nov 23

BOS5:00 amBoston Logan Intl

12h 05m

1 stop

ONT2:05 pmOntario

Dec 2

ONT8:40 amOntario

10h 35m

2 stops

BOS10:15 pmBoston Logan Intl

$367

Southwest

Dec 3

BOS5:00 amBoston Logan Intl

8h 10m

1 stop

ONT10:10 amOntario

Dec 6

ONT8:05 amOntario

11h 00m

2 stops

BOS10:05 pmBoston Logan Intl

$376

Southwest

Jan 28

BOS5:45 amBoston Logan Intl

10h 25m

2 stops

ONT1:10 pmOntario

Feb 1

ONT11:15 amOntario

9h 30m

1 stop

BOS11:45 pmBoston Logan Intl

$382

Delta flights from Boston to Ontario

Our best Delta deals on Boston to Ontario flight tickets

Delta

Dec 3

BOS5:20 amBoston Logan Intl

8h 47m

1 stop

ONT11:07 amOntario

Dec 9

ONT12:20 pmOntario

9h 50m

1 stop

BOS1:10 amBoston Logan Intl

$297

Delta

Dec 3

BOS5:20 amBoston Logan Intl

8h 47m

1 stop

ONT11:07 amOntario

Dec 9

ONT7:05 amOntario

10h 25m

1 stop

BOS8:30 pmBoston Logan Intl

$334

Delta

Dec 3

BOS6:45 pmBoston Logan Intl

8h 12m

1 stop

ONT11:57 pmOntario

Dec 10

ONT6:00 amOntario

7h 29m

1 stop

BOS4:29 pmBoston Logan Intl

$335

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 12/3

5:20 am-11:07 am

1 stop8h 47m

Ontario

Wed 12/9

12:20 pm-1:10 am

1 stop9h 50m

$297

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 12/3

11:08 am-12:17 am

2 stops16h 09m

Ontario

Wed 12/9

2:53 pm-10:39 am

2 stops16h 46m

$328

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 12/3

5:20 am-11:07 am

1 stop8h 47m

Ontario

Wed 12/9

12:20 pm-1:10 am

1 stop9h 50m

$334

Quickest round-trip

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Mon 12/7

6:26 am-12:38 pm

1 stop9h 12m

Ontario

Mon 12/14

1:23 pm-11:45 pm

1 stop7h 22m

$335

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Mon 11/23

6:00 am-1:19 pm

1 stop10h 19m

Ontario

Wed 12/2

9:35 am-8:51 pm

1 stop8h 16m

$335

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Sat 12/5

4:56 pm-11:54 pm

1 stop9h 58m

Ontario

Tue 12/8

6:00 am-11:59 pm

1 stop14h 59m

$335

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Fri 12/4

2:59 pm-9:11 pm

1 stop9h 12m

Ontario

Wed 12/9

6:40 pm-7:57 am

1 stop10h 17m

$350

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Fri 12/4

2:59 pm-9:11 pm

1 stop9h 12m

Ontario

Wed 12/9

5:00 am-5:55 pm

2 stops9h 55m

$360

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Mon 11/23

5:00 am-2:05 pm

1 stop12h 05m

Ontario

Wed 12/2

8:40 am-10:15 pm

2 stops10h 35m

$367

BostonOntario

BOS Boston Logan Intl - ONT Ontario

BOSONT

Boston Logan Intl

Thu 12/3

5:00 am-10:10 am

1 stop8h 10m

Ontario

Sun 12/6

8:05 am-10:05 pm

2 stops11h 00m

$376

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 $392 to $626.
The lowest price recently found on this route was $297.

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 $503 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	$150
Fastest flight time	8h 04m
Direct flights	None

The best one-way flight to Ontario from Boston in the past 72 hours is $150. The best round-trip flight deal from Boston to Ontario found on momondo in the last 72 hours is $297.

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 27%, Delta at 17%, 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 8,691 reviews	Search Delta flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.3 10,454 reviews	Search United Airlines flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.0 12,209 reviews	Search American Airlines flights
JetBlue	PriceFrom $298	Free Cancellation	Rating 7.1 3,076 reviews	Search JetBlue flights
Southwest	PriceFrom $317	Free Cancellation	Rating 7.9 4,217 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 $150

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 12/14. 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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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

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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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