$234 Find Cheap Flights from Maine to Ontario - Compare and Save

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1 adult, Economy, 0 bags

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Low season

January

Cheapest flight

$234
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Portland to Toronto

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 from Maine to Ontario 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 from Maine to Ontario with an airline and back 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 from Maine to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many airports are there in Ontario?

    There are 26 airports in Ontario. The busiest airport is Toronto Pearson Airport (YYZ), with 75% of all flights arriving there.

  • How long is the flight to Ontario?

    An average nonstop flight from Maine to Ontario takes 6h 27m, covering a distance of 429 miles. The shortest route is Boston (BOS) to Montreal Pierre Elliott Trudeau Intl Airport (YUL) with an average flight time of 1h 22m.

Reviews of the top airline flying from Maine to Ontario

 
Need help choosing which airline to fly with from Maine to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
American AirlinesOverall score based on 12189 reviews
7.4Boarding
7.9Crew
6.4Food
7.1Comfort
6.8Entertainment
Airline reviews

Limited service due to turbulence, N/A Food and Drink. No entertainment

8.0 ExcellentAnonymous, Oct 2026
Read more American Airlines reviews

Limited service due to turbulence, N/A Food and Drink. No entertainment

Both directions of our trip were befuddled by massive delays, one of which led to our connecting flight being grounded mid air due to storms that we’d have missed if we were on time. The other our originating flight was delayed repeatedly until it arrived at our connecting airport later than our final leg was even supposed to have arrived. American cannot seem to manage rebooking s for a family party… both directions we had to come up with a plan to get to Boston stay overnight only one night each direction was covered by the airline -and take a bus to or from our destination. Missed an entire leg of our trip, hotel cancellation fees, expensive stay in Boston and bus ticket expenses are unlikely to be comped and the meal vouchers are worthless.

My flight was 4 hours delayed on departure at 6a causing me to miss my connection at DCA. I had to scramble to find a seat home on a later flight and instead of an exit seat, I was in row 30 on a flight getting me home 5 hours later than planned. The AA team on the ground did a fine job. AA continues to run the airline like the passengers are cargo.

Flight was late and boarding was confusing because gate changed and I didn’t get a notification

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Was a normal flight but it was delayed, and there wasn't an explanation.

Boarding was disorganized and delayed because they overbooked and wanted people to give up seats then further delayed due to an issue with the plane. They did not load my bag and it took a day for them to return it. Flight attendant was lovely and the only positive thing about this trip.

a321 business class not up to transcontinental & international flight standards

Flight was delayed after boarding and no idea when it would take off. Crew in Portland did arrange for transport to Boston for a different set of flights to my destination.

Seats are so close together. Middle seats should be discounted.

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