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Ontario

$119+ Cheap flights from Maine to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — ONT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Maine to Ontario

Keep the following information in mind while searching for Maine to Ontario flight deals. Data was last updated September 15, 2025.

Round-trip from

$257
(American Airlines)

One-way from

$119
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$350
From Maine to Ontario
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One-way flight from Maine to Ontario
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Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Maine to Ontario

Cheapest flights from Maine to Ontario
Explore the most affordable flight options available from Maine to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:30 amBOS - ONT
1 stop11h 13mAmerican Airlines
Tue 10/2110:09 amONT - BOS
1 stop8h 16mAmerican Airlines
Deal found 9/13$257
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:20 pmBOS - ONT
2 stops14h 30mFrontier
Thu 11/612:05 pmONT - BOS
2 stops16h 47mFrontier
Deal found 9/15$258
This Trip.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/47:00 amBOS - ONT
1 stop11h 17mAlaska Airlines
Wed 11/511:59 amONT - BOS
1 stop9h 21mAlaska Airlines
Deal found 9/13$264
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:30 amBOS - ONT
1 stop9h 28mAmerican Airlines
Wed 10/2910:57 amONT - BOS
1 stop7h 51mAmerican Airlines
Deal found 9/15$268
This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:37 pmBOS - ONT
1 stop10h 30mAmerican Airlines
Mon 12/810:34 pmONT - BOS
1 stop8h 57mAmerican Airlines
Deal found 9/13$277
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:50 pmBOS - ONT
1 stop10h 00mSouthwest
Fri 11/72:15 pmONT - BOS
1 stop6h 50mSouthwest
Deal found 9/13$284
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:55 pmBOS - ONT
1 stop8h 10mSouthwest
Sun 11/28:25 pmONT - BOS
2 stops8h 50mSouthwest
Deal found 9/14$288
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amBOS - ONT
1 stop11h 21mAlaska Airlines
Tue 1/64:36 pmONT - BOS
1 stop12h 12mAlaska Airlines
Deal found 9/15$291
This Alaska Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:00 amBOS - ONT
1 stop11h 17mAlaska Airlines
Fri 10/3111:59 amONT - BOS
1 stop9h 21mAlaska Airlines
Deal found 9/13$294
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:46 amPWM - ONT
2 stops11h 09mAmerican Airlines
Wed 1/710:28 amONT - PWM
2 stops10h 22mAmerican Airlines
Deal found 9/14$369
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:51 pmPWM - ONT
1 stop8h 40mUnited Airlines
Mon 11/35:05 amONT - PWM
1 stop7h 43mUnited Airlines
Deal found 9/13$405
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:00 amPWM - ONT
2 stops15h 06mUnited Airlines
Sun 10/195:05 amONT - PWM
1 stop7h 43mUnited Airlines
Deal found 9/14$451

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maine to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Maine to Ontario that are best for you.

Fly from

Maine

Fly to

Ontario

Route

Depart

Return

Price

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 1/6

5:12 pm-11:59 pm

1 stop9h 47m

Ontario

Wed 1/21

11:30 am-11:59 pm

1 stop9h 29m

$277

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 3/4

10:00 am-6:17 pm

1 stop11h 17m

Ontario

Mon 3/9

6:55 pm-7:16 am

1 stop9h 21m

$287

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Fri 10/31

5:00 am-1:10 pm

2 stops11h 10m

Ontario

Sun 11/2

8:25 pm-8:15 am

2 stops8h 50m

$293

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 11/4

7:00 am-3:17 pm

1 stop11h 17m

Ontario

Sat 11/8

11:59 am-12:20 am

1 stop9h 21m

$296

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 11/1

6:15 am-12:14 pm

1 stop8h 59m

Ontario

Sat 11/8

6:00 am-4:12 pm

1 stop7h 12m

$297

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Sat 1/17

1:55 pm-9:14 pm

1 stop10h 19m

Ontario

Mon 1/26

5:05 pm-6:13 am

1 stop10h 08m

$297

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Thu 12/4

5:30 am-10:35 am

1 stop8h 05m

Ontario

Sun 12/7

6:50 am-5:40 pm

1 stop7h 50m

$297

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 1/14

5:40 am-11:38 am

1 stop8h 58m

Ontario

Fri 1/23

10:30 pm-10:02 am

1 stop8h 32m

$297

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Tue 1/13

1:55 pm-9:14 pm

1 stop10h 19m

Ontario

Sat 1/24

4:00 pm-6:32 am

1 stop11h 32m

$297

BostonOntario

BOS - ONT

BOSONT

Boston Logan Intl

Wed 1/7

5:40 am-11:38 am

1 stop8h 58m

Ontario

Wed 1/21

6:00 am-4:44 pm

1 stop7h 44m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 54 results
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Best time to book a flight from Maine to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Maine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Maine to Ontario

What is the cheapest month to book a flight from Maine to Ontario?

Currently, August is the cheapest month in which you can book a flight from Maine to Ontario (average of $246). Flying from Maine to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Maine to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Maine?

    If you book a flight to Ontario from Maine, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Maine to Ontario?

    Departing from Maine to Ontario will take you 9h 47m. The distance from Maine to Ontario is about 2559 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Maine to Ontario one-way?

    $124 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from $138 and $138, respectively.

  • What are the most popular routes from Maine to Ontario?

    The most popular route from Maine to Ontario is Boston Logan Intl - Ontario. You may also consider Portland - Ontario or Bangor - Ontario.

  • Can I find deals for flights from Maine to Ontario that include hotel bookings?

    Yes. In addition to deals on Maine to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maine to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maine to Ontario.

  • Can I find deals for business class flights from Maine to Ontario?

    Yes. Cheapflights offers flight deals from Maine to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Maine to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Maine to Ontario (average of $246). Flying from Maine to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Maine to Ontario

Discover the top 2 airlines that operate flights from Maine to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$279Average$586FlexibilityNo cancel feeOn-time71%
DeltaCheapest$302Average$442FlexibilityNo cancel feeOn-timeN/A

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