Cheap flights from Portland, Maine to Los Angeles from $214
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Los Angeles departing on 11/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Not ready to book? to track prices.Southwest flights from Portland, Maine to Ontario
Our best Southwest deals on Portland, Maine to Ontario flight tickets
American Airlines flights from Portland, Maine to Ontario
Our best American Airlines deals on Portland, Maine to Ontario flight tickets
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Use the filters below to find and compare flights from Portland, Maine to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Sat 11/7
1:10 pm-10:43 pm
2 stops12h 33m
Ontario
Sat 11/14
12:18 pm-11:31 pm
1 stop8h 13m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Sat 11/7
11:55 am-10:43 pm
2 stops13h 48m
Ontario
Sat 11/14
12:18 pm-11:31 pm
1 stop8h 13m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Sat 11/7
11:55 am-10:43 pm
2 stops13h 48m
Ontario
Sat 11/14
12:18 pm-11:31 pm
1 stop8h 13m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Sat 11/7
11:55 am-10:43 pm
2 stops13h 48m
Ontario
Sat 11/14
7:00 am-11:31 pm
2 stops13h 31m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Mon 1/25
10:52 am-11:13 pm
2 stops15h 21m
Ontario
Sat 1/30
6:00 am-9:43 pm
2 stops12h 43m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Mon 1/25
10:52 am-11:13 pm
2 stops15h 21m
Ontario
Sat 1/30
6:00 am-9:43 pm
2 stops12h 43m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Mon 1/25
11:49 am-11:13 pm
2 stops14h 24m
Ontario
Sat 1/30
9:28 am-10:48 pm
2 stops10h 20m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Fri 11/20
5:20 am-2:05 pm
2 stops11h 45m
Ontario
Sat 11/21
6:45 pm-10:30 am
2 stops12h 45m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Wed 10/28
3:23 pm-8:51 pm
1 stop8h 28m
Ontario
Sat 10/31
5:00 am-4:02 pm
1 stop8h 02m
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Sat 11/7
3:23 pm-8:51 pm
1 stop8h 28m
Ontario
Sat 11/14
5:00 am-4:02 pm
1 stop8h 02m
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How to get the cheapest flight ticket from Portland, Maine to Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Ontario?
In general, November is the cheapest month to fly from Portland, Maine to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel during the month of November, then book flights to Ontario from Portland, Maine during January instead. Flights to Ontario in January, while not as cheap as those in November, still average around $0.
Can stopping save me money on Portland, Maine to Ontario flights?
You could potentially save up to 4% on your flight if you consider stops on a Portland, Maine to Ontario flight.
What is the cheapest airline that flies from Portland to Ontario?
United Airlines and Southwest are the most popular carriers operating from Portland to Ontario
What airlines fly to Ontario?
JetBlue, American Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Portland, Maine according to our data. JetBlue is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 9 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland, Maine to Ontario
Cheap Portland, Maine to Ontario (PWM to ONT) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Ontario
Frequently asked questions about flying from Portland, Maine to Ontario
How far is Portland to Ontario by plane?
Portland and Ontario are 2595.5 mi apart from one another. Flights usually cover this in 8h 43m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Ontario Airport?
Prices for flights from Portland Airport to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Ontario Airport?
There are 2 operators available for flights from Portland Airport to Ontario Airport as of October 2026.
How old do you have to be to fly from Portland Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland, Maine to Ontario?
momondo data reveals that the most frequently booked airline on the route from Portland, Maine to Ontario is American Airlines, representing 52% of all bookings. The subsequent popular airline is Delta at 48%.
Best airlines flying from Portland, Maine to Ontario
Compare and see reviews for airlines that fly from Portland, Maine to Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $302 | Free Cancellation | Rating 7.8 8,646 reviews | |||
| PriceFrom $360 | Free Cancellation | Rating 7.0 12,146 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Portland to Ontario?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Ontario for you.
Can I find flights from Portland to Ontario with flexible booking policies on momondo?
momondo does allow users to show only those flights to Ontario from Portland which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Portland to Ontario?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Portland.
I’m not ready to book a flight from Portland to Ontario right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Portland to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.