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Maine

$86+ Cheap flights from Ontario (ONT) to Maine

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PWM
Mar 19 — Mar 261
Wed 3/19
Wed 3/26
1 adult, Economy
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Cheap flight deals from Ontario to Maine

Keep the following information in mind while searching for Ontario to Maine flight deals. Data was last updated March 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(Frontier)

One-way from

$86
(CheapOair)

Popular in

December

Cheapest in

January

Average price

$532
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From Ontario to Maine
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One-way flight from Ontario to Maine
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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Ontario to Maine

Cheapest flights from Ontario to Maine
Explore the most affordable flight options available from Ontario to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 14, 2025.

This Frontier deal was found by Cheapflights users on 3/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/18:08 pmONT - BOS
1 stop11h 53mFrontier
Wed 7/911:56 amBOS - ONT
1 stop10h 12mFrontier
Deal found 3/13$200
This JetBlue deal was found by Cheapflights users on 3/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/610:40 pmONT - BOS
1 stop11h 32mJetBlue
Fri 5/92:45 pmBOS - ONT
1 stop9h 37mJetBlue
Deal found 3/12$271
This American Airlines deal was found by Cheapflights users on 3/11. 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.
Sat 5/1710:51 amONT - BOS
1 stop9h 46mAmerican Airlines
Wed 5/286:45 amBOS - ONT
1 stop8h 05mAmerican Airlines
Deal found 3/11$293
This United Airlines deal was found by Cheapflights users on 3/13. 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.
Tue 7/16:32 pmONT - BOS
2 stops10h 10mUnited Airlines
Wed 7/93:40 pmBOS - ONT
1 stop8h 42mUnited Airlines
Deal found 3/13$304
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Wed 4/3011:46 amONT - BOS
1 stop9h 13mAlaska Airlines
Sat 5/37:00 amBOS - ONT
1 stop11h 32mAlaska Airlines
Deal found 3/12$316
This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/11:30 pmONT - BOS
1 stop7h 45mDelta
Wed 4/96:15 amBOS - ONT
1 stop9h 11mDelta
Deal found 3/13$317
This Southwest deal was found by Cheapflights users on 3/12. 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.
Tue 7/19:20 pmONT - BOS
1 stop9h 30mSouthwest
Wed 8/2012:40 pmBOS - ONT
2 stops9h 55mSouthwest
Deal found 3/12$344
This United Airlines deal was found by Cheapflights users on 3/13. 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.
Thu 3/276:45 pmONT - PWM
2 stops12h 52mUnited Airlines
Thu 4/39:30 amPWM - ONT
2 stops13h 51mUnited Airlines
Deal found 3/13$384
This JetBlue deal was found by Cheapflights users on 3/13. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/910:40 pmONT - PWM
1 stop11h 40mJetBlue
Fri 5/163:20 pmPWM - ONT
1 stop9h 02mJetBlue
Deal found 3/13$443
This United Airlines deal was found by Cheapflights users on 3/12. 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 6/286:43 pmONT - BGR
2 stops17h 50mUnited Airlines
Thu 7/34:30 pmBGR - ONT
1 stop8h 56mUnited Airlines
Deal found 3/12$597
This American Airlines deal was found by Cheapflights users on 3/12. 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 7/1011:59 pmONT - BGR
2 stops13h 23mAmerican Airlines
Fri 7/252:35 pmBGR - ONT
2 stops10h 03mAmerican Airlines
Deal found 3/12$693
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 6/64:45 pmONT - BGR
2 stops14h 15mAlaska Airlines
Sat 6/712:27 pmBGR - ONT
2 stops14h 30mAlaska Airlines
Deal found 3/12$760

Find flights from Ontario to Maine within your budget

Customize your flight search to find flights from Ontario to Maine 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 March 14, 2025.

Fly from

Ontario

Fly to

Maine

Route

Depart

Return

Price

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 7/1

8:08 pm-11:01 am

1 stop11h 53m

Boston Logan Intl

Wed 7/9

11:56 am-7:08 pm

1 stop10h 12m

$200

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Fri 5/2

10:40 pm-9:32 am

1 stop7h 52m

Boston Logan Intl

Thu 5/8

2:45 pm-9:22 pm

1 stop9h 37m

$271

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 5/7

1:14 pm-6:00 am

1 stop13h 46m

Boston Logan Intl

Tue 5/13

9:10 am-6:23 pm

1 stop12h 13m

$297

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Tue 5/27

6:41 pm-6:04 am

1 stop8h 23m

Boston Logan Intl

Sat 5/31

6:00 am-12:14 pm

1 stop9h 14m

$299

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Wed 4/30

11:46 am-11:59 pm

1 stop9h 13m

Boston Logan Intl

Sat 5/3

7:00 am-3:32 pm

1 stop11h 32m

$316

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Sat 4/12

6:00 am-4:09 pm

1 stop7h 09m

Boston Logan Intl

Tue 4/15

6:39 pm-11:41 pm

1 stop8h 02m

$317

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Thu 5/1

6:24 pm-7:55 am

1 stop10h 31m

Boston Logan Intl

Mon 5/5

5:20 pm-11:59 pm

1 stop9h 39m

$362

OntarioBoston

ONT - BOS

ONTBOS

Ontario

Mon 6/16

7:35 pm-7:55 am

2 stops9h 20m

Boston Logan Intl

Wed 8/13

9:25 am-6:25 pm

2 stops12h 00m

$363

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Thu 3/27

6:45 pm-10:37 am

2 stops12h 52m

Portland

Thu 4/3

9:30 am-8:21 pm

2 stops13h 51m

$384

OntarioPortland

ONT - PWM

ONTPWM

Ontario

Fri 5/9

10:40 pm-1:20 pm

1 stop11h 40m

Portland

Fri 5/16

3:20 pm-9:22 pm

1 stop9h 02m

$443

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 34 results
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Best time to book a flight from Ontario to Maine

Have a flexible travel schedule? Discover the best time to fly to Maine from Ontario 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.

Travel insights for flights from Ontario to Maine

Get recent, data-driven insights about flights from Ontario to Maine including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Maine (average of $296). Flying from Ontario to Maine in April is currently the most expensive (average of $463). 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.

What is the cheapest time of day to fly from ONT to ME?

Find hourly flight availability from Ontario to Maine. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Maine as you normally would.

Rainfall in Maine by month

Plan your trip to Maine by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Maine when rainfall is around 2.9 in.

Temperature in Maine by month

Plan your trip to Maine by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Maine

Get insights into the airlines that provide service to Maine. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Maine. Reviews last updated March 14, 2025.
To help decide which airline to fly from Ontario to Maine, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,292 reviews

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,292 reviews
Southwest
8.1
Very good
4,292 reviews

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines
8.0
Very good
9,734 reviews
Southwest
8.1
Very good
4,292 reviews

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
7,944 reviews
Southwest
8.1
Very good
4,292 reviews

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines
7.9
Good
2,318 reviews
Southwest
8.1
Very good
4,292 reviews

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines
7.4
Good
8,623 reviews
Southwest
8.1
Very good
4,292 reviews

Comfort

8.1

Boarding

8.2

Food

7.1

Crew

8.7

Overall

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Maine. 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 from for flights from Ontario to Maine?

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

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

    One-way options have recently been found by users for as low as $86 on Frontier. Other airlines that offer cheap prices include JetBlue from $146 and Alaska Airlines from $158 one-way.

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

    When deciding which route to take from Ontario to Maine consider Ontario - Boston Logan Intl, Ontario - Portland or Ontario - Bangor as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Maine 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 Ontario to Maine?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Maine (average of $296). Flying from Ontario to Maine in April is currently the most expensive (average of $463). 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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Alternative routes for Ontario to Maine

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Maine

Discover the top 5 airlines that operate flights from Ontario to Maine. 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 March 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$259Average$392FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$327Average$502FlexibilityNo cancel feeOn-time71%
DeltaCheapest$353Average$707FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$451Average$867FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$683Average$1,088FlexibilityNo cancel feeOn-time63%
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