Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Boston from $114

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 8/25. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Boston

Cheap round-trip flights

Frontier Logo
12:05 pm - 7:52 amONT-BOS
16h 47m2 stops
Frontier Logo
11:43 am - 11:50 pmBOS-ONT
15h 07m2 stops
$227Frontier
Find Deal
Thu, Oct 30 - Sat, Nov 1
Frontier Logo
12:05 pm - 7:52 amONT-BOS
16h 47m2 stops
Frontier Logo
8:40 am - 11:50 pmBOS-ONT
18h 10m2 stops
$231Frontier
Find Deal
Thu, Nov 6 - Sun, Nov 9
Frontier Logo
4:05 pm - 10:48 amONT-BOS
15h 43m2 stops
Frontier Logo
8:40 am - 11:50 pmBOS-ONT
18h 10m2 stops
$232Frontier
Find Deal
Fri, Nov 14 - Sun, Nov 16
American Airlines Logo
12:45 pm - 11:42 pmONT-BOS
7h 57m1 stop
American Airlines Logo
6:15 am - 11:56 amBOS-ONT
8h 41m1 stop
$257American Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 23
United Airlines Logo
7:00 am - 5:46 pmONT-BOS
7h 46m1 stop
United Airlines Logo
9:30 am - 5:37 pmBOS-ONT
11h 07m2 stops
$262United Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 23
Southwest Logo
12:00 pm - 10:40 pmONT-BOS
7h 40m1 stop
Southwest Logo
5:20 am - 10:40 amBOS-ONT
8h 20m1 stop
$267Southwest
Find Deal
Tue, Oct 21 - Sat, Oct 25
American Airlines Logo
12:47 pm - 11:27 pmONT-BOS
7h 40m1 stop
American Airlines Logo
8:29 am - 3:24 pmBOS-ONT
9h 55m2 stops
$272American Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
United Airlines Logo
7:00 am - 7:20 pmONT-BOS
9h 20m1 stop
United Airlines Logo
6:00 am - 12:37 pmBOS-ONT
9h 37m1 stop
$296United Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
Delta Logo
11:55 am - 11:02 pmONT-BOS
8h 07m1 stop
Delta Logo
6:10 am - 12:17 pmBOS-ONT
9h 07m1 stop
$297Delta
Find Deal
Tue, Sep 16 - Fri, Sep 26
Delta Logo
11:55 am - 11:02 pmONT-BOS
8h 07m1 stop
Delta Logo
12:10 pm - 7:19 pmBOS-ONT
10h 09m1 stop
$327Delta
Find Deal
Sat, Sep 20 - Sat, Nov 1

JetBlue flights from Ontario to Boston

Our best JetBlue deals on Ontario to Boston flight tickets
JetBlue
Sep 17
ONT10:56 pmOntario
7h 38m
1 stop
BOS9:34 amBoston Logan Intl
Sep 20
BOS2:45 pmBoston Logan Intl
9h 44m
1 stop
ONT9:29 pmOntario
$259
Find similar
JetBlue
Sep 18
ONT10:56 pmOntario
7h 38m
1 stop
BOS9:34 amBoston Logan Intl
Sep 26
BOS12:20 pmBoston Logan Intl
12h 09m
1 stop
ONT9:29 pmOntario
$291
Find similar
JetBlue
Sep 12
ONT10:56 pmOntario
9h 49m
1 stop
BOS11:45 amBoston Logan Intl
Sep 13
BOS2:45 pmBoston Logan Intl
9h 44m
1 stop
ONT9:29 pmOntario
$305
Find similar

Frontier flights from Ontario to Boston

Our best Frontier deals on Ontario to Boston flight tickets
Frontier
Oct 30
ONT12:05 pmOntario
16h 47m
2 stops
BOS7:52 amBoston Logan Intl
Nov 1
BOS11:43 amBoston Logan Intl
15h 07m
2 stops
ONT11:50 pmOntario
$227
Find similar
Frontier
Nov 6
ONT12:05 pmOntario
16h 47m
2 stops
BOS7:52 amBoston Logan Intl
Nov 9
BOS8:40 amBoston Logan Intl
18h 10m
2 stops
ONT11:50 pmOntario
$231
Find similar
Frontier
Nov 14
ONT4:05 pmOntario
15h 43m
2 stops
BOS10:48 amBoston Logan Intl
Nov 16
BOS8:40 amBoston Logan Intl
18h 10m
2 stops
ONT11:50 pmOntario
$232
Find similar

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 August 19, 2025.
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

Thu 10/30

12:05 pm-7:52 am

2 stops16h 47m

Boston Logan Intl

Sat 11/1

11:43 am-11:50 pm

2 stops15h 07m

$227

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 11/6

12:05 pm-7:52 am

2 stops16h 47m

Boston Logan Intl

Sun 11/9

8:40 am-11:50 pm

2 stops18h 10m

$231

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 11/14

4:05 pm-10:48 am

2 stops15h 43m

Boston Logan Intl

Sun 11/16

8:40 am-11:50 pm

2 stops18h 10m

$232

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 9/9

12:45 pm-11:42 pm

1 stop7h 57m

Boston Logan Intl

Tue 9/23

6:15 am-11:56 am

1 stop8h 41m

$257

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 9/9

7:00 am-5:46 pm

1 stop7h 46m

Boston Logan Intl

Tue 9/23

9:30 am-5:37 pm

2 stops11h 07m

$262

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 10/21

12:00 pm-10:40 pm

1 stop7h 40m

Boston Logan Intl

Sat 10/25

5:20 am-10:40 am

1 stop8h 20m

$267

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 10/21

12:47 pm-11:27 pm

1 stop7h 40m

Boston Logan Intl

Sat 10/25

8:29 am-3:24 pm

2 stops9h 55m

$272

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 11/12

7:00 am-7:20 pm

1 stop9h 20m

Boston Logan Intl

Sun 11/16

6:00 am-12:37 pm

1 stop9h 37m

$296

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 9/16

11:55 am-11:02 pm

1 stop8h 07m

Boston Logan Intl

Fri 9/26

6:10 am-12:17 pm

1 stop9h 07m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 9/20

11:55 am-11:02 pm

1 stop8h 07m

Boston Logan Intl

Sat 11/1

12:10 pm-7:19 pm

1 stop10h 09m

$327

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 cheapest month to fly to Boston?

In general, September 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 $339. If you aren’t able to travel during the month of September, then book flights to Boston from Ontario during August instead. Flights to Boston in August, while not as cheap as those in September, still average around $388.

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

The cheapest day to depart from Ontario to Boston is on a Wednesday when prices can be found for as low as $382. 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 $484.

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 $332. 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 $462 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 $409 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 $360 on momondo.

How have Ontario to Boston flight prices changed over time?

As of August 2025, prices for Ontario to Boston flights are approximately 0% more expensive 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

Best Price Found

$114

Fastest flight time

7h 38m

Direct flights

None

Airports in Boston

1 airport
The best one-way flight to Boston from Ontario in the past 72 hours is $114. The best round-trip flight deal from Ontario to Boston found on momondo in the last 72 hours is $227.
The fastest flight from Ontario to Boston takes 7h 38m
There are no direct flights from Ontario to Boston. Popular non-direct route for this connection is Ontario Airport - Boston Logan Intl Airport.
There is 1 airport near Boston: Boston Logan Intl (BOS)
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 38m, 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
Alaska AirlinesPriceFrom $131Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Spirit AirlinesPriceFrom $154Free CancellationRating
6.3
8,037 reviews
Search Spirit Airlines flights
DeltaPriceFrom $178Free CancellationRating
7.9
7,981 reviews
Search Delta flights
JetBluePriceFrom $207Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
American AirlinesPriceFrom $297Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $298Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

  • United Airlines Flights From Ontario to Boston

    United Airlines is one of the most popular airlines flying from Ontario to Boston, operating 6 flights/week on average for this route. A good United Airlines flight deal for Ontario to Boston starts from $287 round-trip, up to an average price of $433. Our users have rated United Airlines at 7.4/10.

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
Nashua
Narragansett
Cambridge
South Yarmouth
Laconia
Gloucester
Brockton
Concord
Falmouth
Everett
Wells
Sturbridge

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.

An easier way to manage your Boston 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 8/24
Sun 8/31
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States