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Cheap flights from Ontario to Portland from $173

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:55 pm - 11:57 amONT  Ontario-PWM Portland
15h 02m2 stops Seattle/Tacoma Intl Detroit Metropolitan Wayne County
Delta Logo
4:53 pm - 11:57 pmPWM  Portland-ONT Ontario
10h 04m2 stops Detroit Metropolitan Wayne County Salt Lake City
$348Delta
Mon, Dec 7 - Thu, Dec 10
Delta Logo
11:08 pm - 3:20 pmONT  Ontario-PWM Portland
13h 12m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
4:53 pm - 11:57 pmPWM  Portland-ONT Ontario
10h 04m2 stops Detroit Metropolitan Wayne County Salt Lake City
$348Delta
Mon, Dec 7 - Thu, Dec 10
United Airlines Logo
5:00 am - 4:02 pmONT  Ontario-PWM Portland
8h 02m1 stop Denver Intl
United Airlines Logo
3:23 pm - 8:51 pmPWM  Portland-ONT Ontario
8h 28m1 stop Denver Intl
$377United Airlines
Tue, Nov 10 - Tue, Nov 17
Delta Logo
12:18 pm - 11:31 pmONT  Ontario-PWM Portland
8h 13m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:05 pm - 7:49 pmPWM  Portland-ONT Ontario
8h 44m1 stop Atlanta Hartsfield-Jackson
$379Delta
Wed, Nov 11 - Sat, Nov 14
United Airlines Logo
6:00 am - 11:21 pmONT  Ontario-PWM Portland
14h 21m2 stops Houston George Bush Intcntl Newark
United Airlines Logo
3:23 pm - 8:51 pmPWM  Portland-ONT Ontario
8h 28m1 stop Denver Intl
$382United Airlines
Tue, Nov 10 - Tue, Nov 17
Delta Logo
12:18 pm - 11:31 pmONT  Ontario-PWM Portland
8h 13m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:05 pm - 9:57 pmPWM  Portland-ONT Ontario
10h 52m1 stop Atlanta Hartsfield-Jackson
$388Delta
Wed, Nov 11 - Mon, Nov 16
Delta Logo
5:55 pm - 11:57 amONT  Ontario-PWM Portland
15h 02m2 stops Seattle/Tacoma Intl Detroit Metropolitan Wayne County
Delta Logo
4:53 pm - 11:57 pmPWM  Portland-ONT Ontario
10h 04m2 stops Detroit Metropolitan Wayne County Salt Lake City
$389Delta
Mon, Dec 7 - Thu, Dec 10
United Airlines Logo
5:00 am - 4:02 pmONT  Ontario-PWM Portland
8h 02m1 stop Denver Intl
United Airlines Logo
3:23 pm - 8:51 pmPWM  Portland-ONT Ontario
8h 28m1 stop Denver Intl
$390United Airlines
Thu, Nov 5 - Wed, Nov 11
Delta Logo
6:00 pm - 10:50 amONT  Ontario-PWM Portland
13h 50m2 stops Seattle/Tacoma Intl Minneapolis St Paul
Delta Logo
2:05 pm - 8:54 pmPWM  Portland-ONT Ontario
9h 49m1 stop Atlanta Hartsfield-Jackson
$394Delta
Thu, Nov 5 - Wed, Nov 11
United Airlines Logo
5:00 am - 4:02 pmONT  Ontario-PWM Portland
8h 02m1 stop Denver Intl
United Airlines Logo
8:47 am - 6:01 pmPWM  Portland-ONT Ontario
12h 14m2 stops Chicago O'Hare Intl San Francisco
$395United Airlines
Thu, Nov 5 - Wed, Nov 11

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Southwest flights from Ontario to Portland, Maine

Our best Southwest deals on Ontario to Portland, Maine flight tickets
Southwest
Nov 5
ONT11:25 amOntario
9h 30m
2 stops
PWM11:55 pmPortland
Nov 11
PWM5:15 amPortland
12h 25m
2 stops
ONT2:40 pmOntario
$440
Southwest
Nov 5
ONT11:25 amOntario
9h 30m
2 stops
PWM11:55 pmPortland
Nov 11
PWM12:45 pmPortland
12h 00m
2 stops
ONT9:45 pmOntario
$479
Southwest
Nov 4
ONT8:40 amOntario
10h 10m
2 stops
PWM9:50 pmPortland
Nov 8
PWM5:20 amPortland
11h 45m
2 stops
ONT2:05 pmOntario
$491

American Airlines flights from Ontario to Portland, Maine

Our best American Airlines deals on Ontario to Portland, Maine flight tickets
American Airlines
Dec 7
ONT11:59 pmOntario
12h 33m
2 stops
PWM3:32 pmPortland
Dec 10
PWM4:02 pmPortland
10h 46m
2 stops
ONT11:48 pmOntario
$489
American Airlines
Mar 14
ONT7:31 pmOntario
12h 01m
2 stops
PWM10:32 amPortland
Mar 17
PWM7:00 amPortland
11h 31m
2 stops
ONT3:31 pmOntario
$568
American Airlines
Oct 24
ONT10:10 pmOntario
10h 16m
1 stop
PWM11:26 amPortland
Oct 31
PWM6:00 amPortland
10h 44m
1 stop
ONT1:44 pmOntario
$589

momondo Fare Finder

 
Use the filters below to find and compare flights from Ontario to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Mon 12/7

5:55 pm-11:57 am

2 stops15h 02m

Portland

Thu 12/10

4:53 pm-11:57 pm

2 stops10h 04m

$348

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Mon 12/7

11:08 pm-3:20 pm

2 stops13h 12m

Portland

Thu 12/10

4:53 pm-11:57 pm

2 stops10h 04m

$348
Quickest round-trip

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Tue 11/10

5:00 am-4:02 pm

1 stop8h 02m

Portland

Tue 11/17

3:23 pm-8:51 pm

1 stop8h 28m

$377

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Wed 11/11

12:18 pm-11:31 pm

1 stop8h 13m

Portland

Sat 11/14

2:05 pm-7:49 pm

1 stop8h 44m

$379

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Tue 11/10

6:00 am-11:21 pm

2 stops14h 21m

Portland

Tue 11/17

3:23 pm-8:51 pm

1 stop8h 28m

$382

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Wed 11/11

12:18 pm-11:31 pm

1 stop8h 13m

Portland

Mon 11/16

2:05 pm-9:57 pm

1 stop10h 52m

$388

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Mon 12/7

5:55 pm-11:57 am

2 stops15h 02m

Portland

Thu 12/10

4:53 pm-11:57 pm

2 stops10h 04m

$389

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Thu 11/5

5:00 am-4:02 pm

1 stop8h 02m

Portland

Wed 11/11

3:23 pm-8:51 pm

1 stop8h 28m

$390

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Thu 11/5

6:00 pm-10:50 am

2 stops13h 50m

Portland

Wed 11/11

2:05 pm-8:54 pm

1 stop9h 49m

$394

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Thu 11/5

5:00 am-4:02 pm

1 stop8h 02m

Portland

Wed 11/11

8:47 am-6:01 pm

2 stops12h 14m

$395

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

How to get the cheapest flight ticket from Ontario to Portland, Maine

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 Portland, Maine?

The cheapest month to fly to Portland, Maine from Ontario is in January. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $369.

Can stopping save me money on Ontario to Portland, Maine flights?

You could potentially save up to 15% on your flight if you consider stops on a Ontario to Portland, Maine flight.

When to book flights from Ontario to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Portland, Maine (ONT to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Portland, Maine

Best Price Found

$173

Fastest flight time

8h 02m

Direct flights

None
The best one-way flight to Portland, Maine from Ontario in the past 72 hours is $173. The best round-trip flight deal from Ontario to Portland, Maine found on momondo in the last 72 hours is $348.
The fastest flight from Ontario to Portland, Maine takes 8h 02m
There are no direct flights from Ontario to Portland, Maine. There are no popular flight routes from Ontario to Portland, Maine.
Search flight deals

Frequently asked questions about flying from Ontario to Portland, Maine

  • How far is Ontario to Portland by plane?

    Ontario and Portland are 2595.5 mi apart from one another. A reasonable flight in good conditions will take 8h 02m.

  • When did momondo last update prices for flights from Ontario Airport to Portland Airport?

    Prices for flights from Ontario Airport to Portland Airport are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Portland Airport?

  • How old do you have to be to fly from Ontario Airport to Portland 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 Ontario Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Portland, Maine?

Best airlines flying from Ontario to Portland, Maine

Compare and see reviews for airlines that fly from Ontario to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $409Free CancellationRating
7.3
10,392 reviews
Search United Airlines flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Jackson
Boothbay Harbor
Brunswick
Lewiston
Freeport
Conway
Auburn
Gorham
Bartlett
Bath
Windham
Intervale
Georgetown
Oxford
Falmouth
Tamworth

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Portland?

Finding the right flight to Portland from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portland quick and easy, saving you time and money.

Can I find flights from Ontario to Portland with flexible booking policies on momondo?

All flight searches from Ontario to Portland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Portland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Portland.

I’m not ready to book a flight from Ontario to Portland right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Portland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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