ONT - BOS

$112 Find Cheap Flights from Ontario to Boston - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$335
Typical prices: $352-$540
American Airlines
Sun 12/9Wed 12/12
ONT - BOS • 1 stop
Cheapest one-way
$112
Typical prices: $180-$302
Multiple Airlines
Sat 12/1
ONT - BOS • 3 stops
Nonstop flights
There are currently no direct flights between Ontario and Boston. You'll need to take a connecting flight to reach the destination.
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Insights
When to book
in advance
Our data shows that travelers who book at least 17 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $362 (round-trip)
Shortest trip • 8h 05m (one-way)
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Insights
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Booking Insights
Flight Deals

Cheap Flights from Ontario to Boston (ONT-BOS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Boston

Wed, Dec 9 - Sat, Dec 12
American Airlines Logo
10:32 am - 11:59 pmONT  Ontario-BOS Boston Logan Intl
10h 27m1 stop Dallas/Fort Worth
American Airlines Logo
1:11 pm - 6:27 pmBOS  Boston Logan Intl-ONT Ontario
8h 16m1 stop Phoenix Sky Harbor Intl
$335American Airlines
Tue, Nov 24 - Wed, Dec 2
American Airlines Logo
7:00 am - 8:37 pmONT  Ontario-BOS Boston Logan Intl
10h 37m1 stop Dallas/Fort Worth
American Airlines Logo
6:26 am - 12:38 pmBOS  Boston Logan Intl-ONT Ontario
9h 12m1 stop Phoenix Sky Harbor Intl
$335American Airlines
Wed, Nov 18 - Wed, Dec 2
Delta Logo
6:00 am - 4:26 pmONT  Ontario-BOS Boston Logan Intl
7h 26m1 stop Salt Lake City
Delta Logo
6:05 am - 12:17 pmBOS  Boston Logan Intl-ONT Ontario
9h 12m1 stop Salt Lake City
$335Delta
Wed, Dec 2 - Sat, Dec 12
Delta Logo
1:11 pm - 12:13 amONT  Ontario-BOS Boston Logan Intl
8h 02m1 stop Salt Lake City
Delta Logo
11:00 am - 4:28 pmBOS  Boston Logan Intl-ONT Ontario
8h 28m1 stop Salt Lake City
$335Delta
Sat, Dec 5 - Mon, Dec 7
Alaska Airlines Logo
6:00 am - 11:59 pmONT  Ontario-BOS Boston Logan Intl
14h 59m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:22 pm - 11:13 amBOS  Boston Logan Intl-ONT Ontario
19h 51m1 stop Seattle/Tacoma Intl
$335Alaska Airlines
Thu, Dec 10 - Tue, Dec 15
Alaska Airlines Logo
5:01 pm - 5:40 amONT  Ontario-BOS Boston Logan Intl
9h 39m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
9:00 am - 4:05 pmBOS  Boston Logan Intl-ONT Ontario
10h 05m1 stop Seattle/Tacoma Intl
$335Alaska Airlines
Thu, Nov 12 - Tue, Nov 17
United Airlines Logo
1:29 pm - 11:50 pmONT  Ontario-BOS Boston Logan Intl
7h 21m1 stop Denver Intl
United Airlines Logo
1:32 pm - 9:40 pmBOS  Boston Logan Intl-ONT Ontario
11h 08m1 stop Houston George Bush Intcntl
$371United Airlines
Thu, Nov 12 - Tue, Nov 17
United Airlines Logo
1:29 pm - 11:50 pmONT  Ontario-BOS Boston Logan Intl
7h 21m1 stop Denver Intl
United Airlines Logo
10:30 am - 6:47 pmBOS  Boston Logan Intl-ONT Ontario
11h 17m2 stops Newark Chicago O'Hare Intl
$376United Airlines
Thu, Nov 12 - Tue, Nov 17
Southwest Logo
8:45 pm - 9:45 amONT  Ontario-BOS Boston Logan Intl
10h 00m2 stops Las Vegas Harry Reid Intl Nashville Intl
Southwest Logo
1:20 pm - 9:45 pmBOS  Boston Logan Intl-ONT Ontario
11h 25m2 stops Baltimore/Washington Denver Intl
$381Southwest
Fri, Jan 15 - Sat, Jan 16
Southwest Logo
6:10 am - 6:15 pmONT  Ontario-BOS Boston Logan Intl
9h 05m1 stop Denver Intl
Southwest Logo
7:15 am - 5:45 pmBOS  Boston Logan Intl-ONT Ontario
13h 30m2 stops Chicago Midway Oakland
$382Southwest
Booking Insights

Price, demand and travel trends for Ontario to Boston flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Ontario to Boston?

Round-trip flights from Ontario to Boston typically range from $352 to $540. The lowest price found in the past 5 days was $335, on American Airlines.

What's the cheapest day of the week to fly from Ontario to Boston?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Ontario to Boston. It’s 23% cheaper than the average day, while Thursday is the most expensive, with prices 14% higher.

What’s the cheapest month to fly from Ontario to Boston?

•February is the cheapest month to fly from Ontario to Boston at $338 round-trip.
•November ($483) and December ($475) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 42% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Ontario to Boston the cheapest?

Flights from Ontario to Boston are cheapest 17 weeks before departure. Booking in this window typically costs about 31% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Ontario to Boston flights

Low season

February

Cheapest flight

$112
Beat the crowds with an average 53% drop in travelers.
The most popular month to fly with an average 31% increase in travelers.
One-way flight from Ontario to Boston

When to book flights from Ontario to Boston

Are your dates flexible? Find out the best times to travel from Ontario to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to Boston flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Boston?

    Two cabin classes are available on flights from Ontario to Boston:

    • Economy Class
    • First Class

  • How long is a flight from Ontario to Boston?

    A nonstop flight from Ontario to Boston takes 00m, covering 2,559 miles.

  • Do I need a passport to fly from Ontario to Boston?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Ontario to Boston flight?

    Round-trip flights from Ontario to Boston range from $352 to $540, with an average of $421 over the past 12 months. Anything below $352 counts as a good deal.

  • How expensive are last-minute Ontario to Boston flights?

    Last-minute fares on this route (booked within two weeks of departure) run 15% above the $421 route average. Book 17 weeks before departure for the lowest fares.

  • Have flight prices from Ontario to Boston changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $335 to $2,300. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Ontario to Boston looking right now?

    One-way fares from Ontario to Boston are currently lower than usual. Average one-way flight prices are about $167, which is 31% below the typical average for this route.

  • What car rental options are available at Boston Logan Intl Airport (BOS)?

    Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates averaging $77 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Thrifty
    • Sixt

  • Which airports can I use when flying from Ontario to Boston?

    Flights from Ontario to Boston usually depart from Ontario (ONT) and arrive at Boston Logan Intl (BOS).

  • Which airports do connecting flights from Ontario to Boston pass through?

    One-stop flights from Ontario to Boston most commonly connect through:

    • Phoenix Sky Harbor Intl (PHX) - 28% of one-stop connections
    • Denver Intl (DEN) - 18% of one-stop connections
    • Dallas/Fort Worth (DFW) - 10% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 9% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to Boston?

    Yes. Flexible dates can save you up to 33% on flights from Ontario to Boston. Monday is the cheapest departure day at $327 round-trip on average, while Thursday is the most expensive at $482, a difference of $155.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Ontario to Boston?

    Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 8h 05m, compared with 8h 21m via Baltimore/Washington (BWI) and 8h 28m via Salt Lake City (SLC).

  • What is the time difference between Ontario and Boston?

    Boston is 3 hours ahead of Ontario (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Boston?

    Some of the most popular sights in Boston are TD Garden, Fenway Park and Boston Common. These are among the most viewed places in Boston on KAYAK.

  • Does ONT have an on-site hotel?

    ONT does not have a hotel within its grounds. However, if you intend to stay at a hotel near this airport, you’ll be spoilt for choice, as Candlewood Suites Ontario Convention Center, Comfort Suites Ontario Convention Center, and Azure Hotel & Suites Ontario Airport are all a short distance from the airport.

  • Can I breastfeed my baby at ONT?

    If you’re traveling with a baby, you can take advantage of one of the nursing suites available at ONT to breastfeed your infant. These nursing suites are present across from gate 207 in Terminal 2 and across from gate 407 in Terminal 4.

  • Can I rent a car at BOS?

    If you’d like to rent a car at BOS, you’ll be happy to hear that this airport features a Rental Car Center that hosts offices for car rentals like Hertz, Avis, Budget, Dollar, SIXT, and Thrifty. To get to this Rental Car Center, you’ll have to board one of the white or blue shuttle buses present on the lower level of the airport’s main terminal.

  • Does BOS have a prayer room?

    If you’re a religious individual, you’ll get the chance to pray before exiting BOS, as it boasts an expansive and well-maintained prayer room. This prayer room referred to as the Our Lady of the Airways Chapel, is situated in Terminal C, on the Arrivals Level, a short distance past Baggage Claim 8.

Your guide to booking Ontario to Boston flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Thursday. On this route, Monday flights average $327, about $155 less than Thursday fares (32% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 17 weeks before you fly. On this route, that window historically saves about 31% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Ontario to Boston trip for February. Fares historically average $338 round-trip in that month - typically $145 less than the most expensive month, which is November (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Boston Logan Intl Airport.

    • Hyatt Regency Boston Harbor
    • Hilton Garden Inn Boston Logan Airport
    • Hilton Boston Logan Airport
  • On the date you’re set to fly from Ontario Airport (ONT), it’s in your best interest to arrive at the airport at least an hour before your flight. Arriving this early will give you enough time to go through the airport’s tedious security checkpoints. Getting to the airport this early will also give you time to check out the airport’s points of interest.
  • If you’re disabled, you can get the assisted travel services you require on your flight from ONT to Boston Logan International Airport (BOS), provided you inform the airline you intend to travel with of your needs at least 72h before your flight. It’s advisable that you inform your airline of your needs 72h before your flight so that they can prepare adequately for you.
  • In case you intend to leave your car at a parking garage at ONT till you fly back, you should consider doing so at one of the off-site garages near the airport. This will save you some money, as the off-site garages charge cheaper rates than the airport’s on-site garages.
  • BOS is a pet-friendly airport. If you’ve traveled with a pet to this airport, you can let it relieve itself at one of the airport’s pet relief areas, available on the Arrivals Level curb of every terminal.
  • If you’re a fan of art, you should consider walking around BOS airport before departing it. This is because at all the terminals, you’ll be able to spot various art installations. It’s worth noting that the artworks on display at this airport’s art installations are all pieces done by local artists.

More options for your flight from Ontario to Boston

Complete your trip to Boston with a hotel stay or car rental