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Cheap flights from Ontario to Boston from $86

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Boston departing on 4/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:16 am - 7:59 pm
ONT
-
BOS
9h 43m1 stop
American Airlines Logo
8:50 am - 4:05 pm
BOS
-
ONT
10h 15m1 stop
$181American Airlines
Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
6:22 am - 7:44 pm
ONT
-
BOS
10h 22m2 stops
American Airlines Logo
8:50 am - 4:05 pm
BOS
-
ONT
10h 15m1 stop
$186American Airlines
Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
9:59 am - 10:55 pm
ONT
-
BOS
9h 56m2 stops
American Airlines Logo
11:10 am - 6:20 pm
BOS
-
ONT
10h 10m2 stops
$192American Airlines
Tue, Feb 3 - Tue, Feb 10
Southwest Logo
11:55 pm - 11:00 am
ONT
-
BOS
8h 05m1 stop
Southwest Logo
7:20 am - 1:15 pm
BOS
-
ONT
8h 55m1 stop
$197Southwest
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
12:18 pm - 11:15 pm
ONT
-
BOS
7h 57m1 stop
American Airlines Logo
12:15 pm - 7:45 pm
BOS
-
ONT
10h 30m1 stop
$199American Airlines
Thu, Feb 12 - Tue, Feb 17
Southwest Logo
11:55 pm - 11:00 am
ONT
-
BOS
8h 05m1 stop
Southwest Logo
5:35 am - 11:35 am
BOS
-
ONT
9h 00m2 stops
$202Southwest
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
12:18 pm - 11:59 pm
ONT
-
BOS
8h 41m2 stops
American Airlines Logo
12:15 pm - 7:45 pm
BOS
-
ONT
10h 30m1 stop
$204American Airlines
Thu, Feb 12 - Tue, Feb 17
Southwest Logo
6:30 am - 4:50 pm
ONT
-
BOS
7h 20m1 stop
Southwest Logo
4:50 pm - 9:45 pm
BOS
-
ONT
7h 55m1 stop
$208Southwest
Tue, Feb 3 - Wed, Feb 4
Southwest Logo
1:40 pm - 11:50 pm
ONT
-
BOS
7h 10m1 stop
Southwest Logo
5:05 pm - 12:10 am
BOS
-
ONT
10h 05m2 stops
$212Southwest
Tue, Mar 17 - Mon, Mar 30
Southwest Logo
5:55 am - 8:50 pm
ONT
-
BOS
11h 55m2 stops
Southwest Logo
4:50 pm - 9:45 pm
BOS
-
ONT
7h 55m1 stop
$214Southwest
Tue, Feb 3 - Wed, Feb 4

Alaska Airlines flights from Ontario to Boston

Our best Alaska Airlines deals on Ontario to Boston flight tickets
Alaska Airlines
Jan 31
ONT11:53 amOntario
9h 01m
1 stop
BOS11:54 pmBoston Logan Intl
Feb 4
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$257
Alaska Airlines
Jan 22
ONT11:53 amOntario
9h 01m
1 stop
BOS11:54 pmBoston Logan Intl
Jan 28
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$276
Alaska Airlines
Jan 29
ONT11:53 amOntario
9h 01m
1 stop
BOS11:54 pmBoston Logan Intl
Feb 2
BOS7:00 amBoston Logan Intl
11h 08m
1 stop
ONT3:08 pmOntario
$286

American Airlines flights from Ontario to Boston

Our best American Airlines deals on Ontario to Boston flight tickets
American Airlines
Feb 3
ONT7:16 amOntario
9h 43m
1 stop
BOS7:59 pmBoston Logan Intl
Feb 10
BOS8:50 amBoston Logan Intl
10h 15m
1 stop
ONT4:05 pmOntario
$181
American Airlines
Feb 3
ONT6:22 amOntario
10h 22m
2 stops
BOS7:44 pmBoston Logan Intl
Feb 10
BOS8:50 amBoston Logan Intl
10h 15m
1 stop
ONT4:05 pmOntario
$186
American Airlines
Feb 3
ONT9:59 amOntario
9h 56m
2 stops
BOS10:55 pmBoston Logan Intl
Feb 10
BOS11:10 amBoston Logan Intl
10h 10m
2 stops
ONT6:20 pmOntario
$192

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Ontario to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 2/3

7:16 am-7:59 pm

1 stop9h 43m

Boston Logan Intl

Tue 2/10

8:50 am-4:05 pm

1 stop10h 15m

$181

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 2/3

6:22 am-7:44 pm

2 stops10h 22m

Boston Logan Intl

Tue 2/10

8:50 am-4:05 pm

1 stop10h 15m

$186

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 2/3

9:59 am-10:55 pm

2 stops9h 56m

Boston Logan Intl

Tue 2/10

11:10 am-6:20 pm

2 stops10h 10m

$192

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 4/7

11:55 pm-11:00 am

1 stop8h 05m

Boston Logan Intl

Tue 4/14

7:20 am-1:15 pm

1 stop8h 55m

$197

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 2/12

12:18 pm-11:15 pm

1 stop7h 57m

Boston Logan Intl

Tue 2/17

12:15 pm-7:45 pm

1 stop10h 30m

$199

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 4/7

11:55 pm-11:00 am

1 stop8h 05m

Boston Logan Intl

Tue 4/14

5:35 am-11:35 am

2 stops9h 00m

$202

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 2/12

12:18 pm-11:59 pm

2 stops8h 41m

Boston Logan Intl

Tue 2/17

12:15 pm-7:45 pm

1 stop10h 30m

$204

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 2/3

6:30 am-4:50 pm

1 stop7h 20m

Boston Logan Intl

Wed 2/4

4:50 pm-9:45 pm

1 stop7h 55m

$208

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 3/17

1:40 pm-11:50 pm

1 stop7h 10m

Boston Logan Intl

Mon 3/30

5:05 pm-12:10 am

2 stops10h 05m

$212

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 2/3

5:55 am-8:50 pm

2 stops11h 55m

Boston Logan Intl

Wed 2/4

4:50 pm-9:45 pm

1 stop7h 55m

$214

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from Ontario to Boston

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

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

What is the cheapest month to fly to Boston?

In general, January is the cheapest month to fly from Ontario to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $369. If you aren’t able to travel during the month of January, then book flights to Boston from Ontario during September instead. Flights to Boston in September, while not as cheap as those in January, still average around $374.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from Ontario to Boston is on a Tuesday when prices can be found for as low as $389. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $478.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Ontario to Boston in the afternoon for as low as $349. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $451 per ticket.

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $416 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Ontario for as low as $363 on momondo.

How have Ontario to Boston flight prices changed over time?

As of January 2026, prices for Ontario to Boston flights are approximately 23% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Boston (ONT to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Boston

Fastest flight time

7h 20m

Direct flights

None
The fastest flight from Ontario to Boston takes 7h 20m
There are no direct flights from Ontario to Boston. There are no popular flight routes from Ontario to Boston.
Search flight deals

  • How far is Ontario to Boston Logan Intl by plane?

    The distance between Ontario and Boston Logan Intl is about 2558.5 mi. Flights usually cover this in 7h 20m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Boston Logan Intl Airport?

    Prices for flights from Ontario Airport to Boston Logan Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Boston Logan Intl Airport?

  • How old do you have to be to fly from Ontario Airport to Boston Logan Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The required travel and health documents for your Boston Logan Intl 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 Boston Logan Intl 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 Ontario to Boston?

Best airlines flying from Ontario to Boston

Compare and see reviews for airlines that fly from Ontario to Boston with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $178Free CancellationRating
7.9
8,032 reviews
Search Delta flights
JetBluePriceFrom $223Free CancellationRating
7.2
2,891 reviews
Search JetBlue flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
9,142 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $278Free CancellationRating
8.0
11,672 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $300Free CancellationRating
7.2
11,097 reviews
Search American Airlines flights
SouthwestPriceFrom $311Free CancellationRating
8.0
4,250 reviews
Search Southwest flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
South Yarmouth
Cambridge
Narragansett
Gloucester
Falmouth
Nashua
Laconia
Brockton
Concord
Everett
Sturbridge
Warwick

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Boston?

It is quick and easy to find Ontario to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

Can I find flights from Ontario to Boston with flexible booking policies on momondo?

momondo does allow users to show only those flights to Boston from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Boston?

momondo provides multiple filters to help you find the best flight to Boston from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Boston right now. Can momondo alert me if prices change?

Price alerts on flights to Boston from Ontario 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.

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