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Cheap flights from Ontario to Boston from $89

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 8/7. 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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Cheap round-trip flights

Frontier Logo
8:09 pm - 10:58 amONT-BOS
11h 49m1 stop
Frontier Logo
12:57 pm - 11:50 pmBOS-ONT
13h 53m2 stops
$264Frontier
Find Deal
jue., ago. 7 - jue., ago. 14
Frontier Logo
8:09 pm - 10:58 amONT-BOS
11h 49m1 stop
Frontier Logo
11:55 am - 7:14 pmBOS-ONT
10h 19m1 stop
$269Frontier
Find Deal
jue., ago. 7 - vie., ago. 15
Delta Logo
11:45 am - 11:14 pmONT-BOS
8h 29m1 stop
Delta Logo
5:20 pm - 10:40 pmBOS-ONT
8h 20m1 stop
$305Delta
Find Deal
sáb., ago. 30 - mié., sep. 3
Delta Logo
1:15 pm - 11:58 pmONT-BOS
7h 43m1 stop
Delta Logo
1:35 pm - 7:11 pmBOS-ONT
8h 36m1 stop
$313Delta
Find Deal
mié., ago. 27 - sáb., sep. 6
American Airlines Logo
12:47 pm - 11:16 pmONT-BOS
7h 29m1 stop
American Airlines Logo
5:55 am - 11:52 amBOS-ONT
8h 57m1 stop
$314American Airlines
Find Deal
vie., ago. 15 - vie., ago. 22
United Airlines Logo
1:34 pm - 11:55 pmONT-BOS
7h 21m1 stop
United Airlines Logo
1:00 pm - 8:43 pmBOS-ONT
10h 43m2 stops
$318United Airlines
Find Deal
vie., ago. 15 - sáb., ago. 23
American Airlines Logo
10:29 pm - 9:52 amONT-BOS
8h 23m1 stop
American Airlines Logo
11:14 am - 5:52 pmBOS-ONT
9h 38m2 stops
$321American Airlines
Find Deal
vie., ago. 15 - vie., ago. 22
Southwest Logo
12:00 pm - 10:35 pmONT-BOS
7h 35m1 stop
Southwest Logo
5:20 am - 10:40 amBOS-ONT
8h 20m1 stop
$325Southwest
Find Deal
mar., oct. 7 - sáb., oct. 11
Southwest Logo
7:10 pm - 8:00 amONT-BOS
9h 50m2 stops
Southwest Logo
6:55 am - 2:15 pmBOS-ONT
10h 20m1 stop
$340Southwest
Find Deal
mié., ago. 13 - dom., ago. 17
United Airlines Logo
6:00 am - 5:01 pmONT-BOS
8h 01m1 stop
United Airlines Logo
6:00 am - 12:14 pmBOS-ONT
9h 14m1 stop
$359United Airlines
Find Deal
lun., jul. 14 - lun., jul. 21

Frontier flights from Ontario to Boston

Our best Frontier deals on Ontario to Boston flight tickets
Frontier
Aug 7
ONT8:09 pmOntario
11h 49m
1 stop
BOS10:58 amBoston Logan Intl
Aug 14
BOS12:57 pmBoston Logan Intl
13h 53m
2 stops
ONT11:50 pmOntario
Frontier
Aug 7
ONT8:09 pmOntario
11h 49m
1 stop
BOS10:58 amBoston Logan Intl
Aug 15
BOS11:55 amBoston Logan Intl
10h 19m
1 stop
ONT7:14 pmOntario
Frontier
Aug 7
ONT5:14 pmOntario
13h 14m
2 stops
BOS9:28 amBoston Logan Intl
Aug 15
BOS11:55 amBoston Logan Intl
10h 19m
1 stop
ONT7:14 pmOntario

American Airlines flights from Ontario to Boston

Our best American Airlines deals on Ontario to Boston flight tickets
American Airlines
Aug 15
ONT12:47 pmOntario
7h 29m
1 stop
BOS11:16 pmBoston Logan Intl
Aug 22
BOS5:55 amBoston Logan Intl
8h 57m
1 stop
ONT11:52 amOntario
American Airlines
Aug 15
ONT10:29 pmOntario
8h 23m
1 stop
BOS9:52 amBoston Logan Intl
Aug 22
BOS11:14 amBoston Logan Intl
9h 38m
2 stops
ONT5:52 pmOntario
American Airlines
Oct 5
ONT7:16 pmOntario
9h 39m
2 stops
BOS7:55 amBoston Logan Intl
Oct 18
BOS11:14 amBoston Logan Intl
10h 21m
2 stops
ONT6:35 pmOntario

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 $366. 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 $368.

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 $372. 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 $481.

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 $318. 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 $455 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 $421 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 $367 on momondo.

How have Ontario to Boston flight prices changed over time?

As of July 2025, prices for Ontario to Boston flights are approximately 7% 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

Best Price Found

$89

Fastest flight time

7h 13m

Direct flights

None

Airports in Boston

1 airport
The best one-way flight to Boston from Ontario in the past 72 hours is $89. The best round-trip flight deal from Ontario to Boston found on momondo in the last 72 hours is $264.
The fastest flight from Ontario to Boston takes 7h 13m
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)

  • 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 13m, 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 $131Free CancellationRating
6.3
8,086 reviews
Search Spirit Airlines flights
JetBluePriceFrom $207Free CancellationRating
7.3
2,916 reviews
Search JetBlue flights
DeltaPriceFrom $208Free CancellationRating
8.0
7,982 reviews
Search Delta flights
United AirlinesPriceFrom $271Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
American AirlinesPriceFrom $288Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $308Free CancellationRating
8.0
4,266 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
Nashua
Cambridge
Laconia
Kennebunkport
Narragansett
Brockton
Concord
Everett
Gloucester
South Yarmouth
Wells
Warwick
Revere

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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1 adult
mar. 7/8
mar. 7/15

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