Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Portland from $185

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
10:00 pm - 1:16 pmONT  Ontario-PWM Portland
12h 16m2 stops Atlanta Hartsfield-Jackson New York LaGuardia
Delta Logo
6:00 am - 11:05 amPWM  Portland-ONT Ontario
8h 05m1 stop Atlanta Hartsfield-Jackson
$364Delta
Mon, Sep 14 - Sat, Sep 19
Delta Logo
6:01 pm - 10:50 amONT  Ontario-PWM Portland
13h 49m2 stops Seattle/Tacoma Intl Minneapolis St Paul
Delta Logo
2:09 pm - 8:25 pmPWM  Portland-ONT Ontario
9h 16m1 stop Atlanta Hartsfield-Jackson
$364Delta
Sat, Oct 24 - Tue, Oct 27
American Airlines Logo
10:10 pm - 11:26 amONT  Ontario-PWM Portland
10h 16m1 stop Charlotte Douglas
American Airlines Logo
11:57 am - 9:11 pmPWM  Portland-ONT Ontario
12h 14m2 stops New York LaGuardia Dallas/Fort Worth
$364American Airlines
Sat, Oct 24 - Tue, Oct 27
Delta Logo
12:16 pm - 11:35 pmONT  Ontario-PWM Portland
8h 19m1 stop Atlanta Hartsfield-Jackson
Delta Logo
4:40 pm - 11:58 pmPWM  Portland-ONT Ontario
10h 18m2 stops Detroit Metropolitan Wayne County Salt Lake City
$364Delta
Tue, Oct 27 - Wed, Nov 11
Southwest Logo
6:20 am - 10:10 pmONT  Ontario-PWM Portland
12h 50m2 stops Dallas Love Field Baltimore/Washington
Southwest Logo
3:25 pm - 11:55 pmPWM  Portland-ONT Ontario
11h 30m2 stops Baltimore/Washington Las Vegas Harry Reid Intl
$405Southwest
Sat, Oct 24 - Mon, Oct 26
Southwest Logo
6:00 am - 9:50 pmONT  Ontario-PWM Portland
12h 50m2 stops Nashville Intl Baltimore/Washington
Southwest Logo
1:40 pm - 10:10 pmPWM  Portland-ONT Ontario
11h 30m2 stops Baltimore/Washington Dallas Love Field
$411Southwest
Sat, Nov 14 - Fri, Nov 20
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
$469United Airlines
Sat, Nov 14 - Wed, Nov 18
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
$469United Airlines
Tue, Nov 10 - Wed, Nov 11
United Airlines Logo
7:00 am - 6:43 pmONT  Ontario-PWM Portland
8h 43m1 stop Chicago O'Hare Intl
United Airlines Logo
3:26 pm - 9:59 pmPWM  Portland-ONT Ontario
9h 33m1 stop Houston George Bush Intcntl
$469United Airlines
Tue, Oct 20 - Sat, Oct 24
Southwest Logo
9:40 am - 10:10 pmONT  Ontario-PWM Portland
9h 30m2 stops Las Vegas Harry Reid Intl Chicago Midway
Southwest Logo
5:40 am - 2:15 pmPWM  Portland-ONT Ontario
11h 35m2 stops Baltimore/Washington San Jose
$537Southwest
Wed, Sep 23 - Sat, Sep 26

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Delta flights from Ontario to Portland, Maine

Our best Delta deals on Ontario to Portland, Maine flight tickets
Delta
Sep 14
ONT10:00 pmOntario
12h 16m
2 stops
PWM1:16 pmPortland
Sep 19
PWM6:00 amPortland
8h 05m
1 stop
ONT11:05 amOntario
$364
Delta
Sep 14
ONT6:00 pmOntario
13h 45m
2 stops
PWM10:45 amPortland
Sep 19
PWM6:00 amPortland
8h 05m
1 stop
ONT11:05 amOntario
$380
Delta
Sep 14
ONT10:00 pmOntario
12h 16m
2 stops
PWM1:16 pmPortland
Sep 19
PWM6:30 amPortland
15h 11m
2 stops
ONT6:41 pmOntario
$420

American Airlines flights from Ontario to Portland, Maine

Our best American Airlines deals on Ontario to Portland, Maine flight tickets
American Airlines
Oct 24
ONT11:59 pmOntario
13h 30m
2 stops
PWM4:29 pmPortland
Oct 27
PWM6:16 amPortland
12h 00m
2 stops
ONT3:16 pmOntario
$370
American Airlines
Oct 24
ONT10:10 pmOntario
10h 16m
1 stop
PWM11:26 amPortland
Oct 26
PWM4:23 pmPortland
10h 29m
2 stops
ONT11:52 pmOntario
$414
American Airlines
Sep 2
ONT10:29 amOntario
10h 18m
2 stops
PWM11:47 pmPortland
Sep 6
PWM6:00 amPortland
10h 31m
2 stops
ONT1:31 pmOntario
$452

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 9/14

10:00 pm-1:16 pm

2 stops12h 16m

Portland

Sat 9/19

6:00 am-11:05 am

1 stop8h 05m

$364

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Sat 10/24

6:01 pm-10:50 am

2 stops13h 49m

Portland

Tue 10/27

2:09 pm-8:25 pm

1 stop9h 16m

$364

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Sat 10/24

10:10 pm-11:26 am

1 stop10h 16m

Portland

Tue 10/27

11:57 am-9:11 pm

2 stops12h 14m

$364

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Tue 10/27

12:16 pm-11:35 pm

1 stop8h 19m

Portland

Wed 11/11

4:40 pm-11:58 pm

2 stops10h 18m

$364

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Sat 10/24

6:20 am-10:10 pm

2 stops12h 50m

Portland

Mon 10/26

3:25 pm-11:55 pm

2 stops11h 30m

$405

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Sat 11/14

6:00 am-9:50 pm

2 stops12h 50m

Portland

Fri 11/20

1:40 pm-10:10 pm

2 stops11h 30m

$411
Quickest round-trip

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Sat 11/14

5:00 am-4:02 pm

1 stop8h 02m

Portland

Wed 11/18

3:23 pm-8:51 pm

1 stop8h 28m

$469

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Tue 11/10

5:00 am-4:02 pm

1 stop8h 02m

Portland

Wed 11/11

3:23 pm-8:51 pm

1 stop8h 28m

$469

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Tue 10/20

7:00 am-6:43 pm

1 stop8h 43m

Portland

Sat 10/24

3:26 pm-9:59 pm

1 stop9h 33m

$469

OntarioPortland

ONT Ontario - PWM Portland

ONTPWM

Ontario

Wed 9/23

9:40 am-10:10 pm

2 stops9h 30m

Portland

Sat 9/26

5:40 am-2:15 pm

2 stops11h 35m

$537

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between Ontario and Portland, Maine?

Prices are currently low for flights on this route.

Typical prices usually range from $393 to $676.
The lowest price recently found on this route was $364.

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 $397.

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

You could potentially save up to 37% on your flight if you consider stops on a Ontario to Portland, Maine flight.

How have Ontario to Portland, Maine flight prices changed over time?

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

$185

Fastest flight time

8h 02m

Direct flights

None
The best one-way flight to Portland, Maine from Ontario in the past 72 hours is $185. The best round-trip flight deal from Ontario to Portland, Maine found on momondo in the last 72 hours is $364.
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
SouthwestPriceFrom $361Free CancellationRating
8.0
4,214 reviews
Search Southwest flights
American AirlinesPriceFrom $373Free CancellationRating
7.1
11,988 reviews
Search American Airlines flights
United AirlinesPriceFrom $409Free CancellationRating
7.4
10,112 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
Boothbay Harbor
Jackson
Lewiston
Brunswick
Freeport
Auburn
Gorham
Conway
Bartlett
Windham
Bath
Intervale
Oxford
Georgetown
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.

An easier way to manage your Portland, Maine trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 9/21
Mon 9/28
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States