ONT

$120 Find Cheap Flights from Maine to Ontario - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Maine to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Maine to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Maine to Ontario

Thu, Sep 10 - Mon, Sep 14
Southwest Logo
5:40 am - 10:20 amBOS  Boston Logan Intl-ONT Ontario
7h 40m1 stop Denver Intl
Southwest Logo
11:55 pm - 9:55 amONT  Ontario-BOS Boston Logan Intl
7h 00m1 stop Chicago Midway
$240Southwest
Thu, Oct 1 - Mon, Oct 5
Southwest Logo
7:05 am - 2:10 pmBOS  Boston Logan Intl-ONT Ontario
10h 05m1 stop Chicago Midway
Southwest Logo
11:55 pm - 12:30 pmONT  Ontario-BOS Boston Logan Intl
9h 35m1 stop Chicago Midway
$240Southwest
Wed, Sep 16 - Wed, Sep 23
American Airlines Logo
7:00 am - 12:06 pmBOS  Boston Logan Intl-ONT Ontario
8h 06m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
10:25 am - 11:34 pmONT  Ontario-BOS Boston Logan Intl
10h 09m1 stop Dallas/Fort Worth
$241American Airlines
Tue, Oct 20 - Tue, Nov 3
American Airlines Logo
8:45 am - 3:16 pmBOS  Boston Logan Intl-ONT Ontario
9h 31m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
12:42 pm - 11:58 pmONT  Ontario-BOS Boston Logan Intl
8h 16m1 stop Dallas/Fort Worth
$241American Airlines
Tue, Sep 15 - Tue, Sep 22
United Airlines Logo
5:01 pm - 10:59 pmBOS  Boston Logan Intl-ONT Ontario
8h 58m1 stop Chicago O'Hare Intl
United Airlines Logo
6:00 am - 5:29 pmONT  Ontario-BOS Boston Logan Intl
8h 29m1 stop Houston George Bush Intcntl
$241United Airlines
Tue, Sep 15 - Tue, Sep 22
United Airlines Logo
6:00 am - 2:01 pmBOS  Boston Logan Intl-ONT Ontario
11h 01m2 stops Chicago O'Hare Intl San Francisco
United Airlines Logo
6:00 am - 5:29 pmONT  Ontario-BOS Boston Logan Intl
8h 29m1 stop Houston George Bush Intcntl
$246United Airlines
Wed, Sep 2 - Thu, Sep 10
Delta Logo
6:05 am - 12:16 pmBOS  Boston Logan Intl-ONT Ontario
9h 11m1 stop Salt Lake City
Delta Logo
1:04 pm - 11:53 pmONT  Ontario-BOS Boston Logan Intl
7h 49m1 stop Salt Lake City
$297Delta
Thu, Oct 29 - Mon, Nov 9
Delta Logo
6:05 am - 12:21 pmBOS  Boston Logan Intl-ONT Ontario
9h 16m1 stop Salt Lake City
Delta Logo
11:10 pm - 9:50 amONT  Ontario-BOS Boston Logan Intl
7h 40m1 stop Atlanta Hartsfield-Jackson
$297Delta
Tue, Sep 22 - Mon, Sep 28
Alaska Airlines Logo
7:12 am - 2:16 pmBOS  Boston Logan Intl-ONT Ontario
10h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:14 pm - 6:09 amONT  Ontario-BOS Boston Logan Intl
8h 55m1 stop Portland
$347Alaska Airlines
Thu, Sep 24 - Mon, Sep 28
Alaska Airlines Logo
7:12 am - 2:16 pmBOS  Boston Logan Intl-ONT Ontario
10h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
6:14 pm - 6:09 amONT  Ontario-BOS Boston Logan Intl
8h 55m1 stop Portland
$347Alaska Airlines
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Good to know

Low season

January

Cheapest flight

$120
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Boston to Ontario

FAQs for booking flights from Maine to Ontario

  • How does KAYAK find such low prices on flights from Maine to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Maine to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Maine is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Maine to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Maine with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

Ontario (ONT)