$169+ Cheap flights from Maine to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — ONT
Oct 6 — Oct 131
Round-trip
1 adult, Economy
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Find cheap flights from Maine to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Maine to OntarioExplore the most affordable flight options available from Maine to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
Explore the most affordable flight options available from Maine to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 6, 2026.
This Delta deal was found by Cheapflights users on 9/2. 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.
Wed 10/287:55 am -
1 stop12h 17m
Wed 11/41:35 pm -
1 stop7h 24m
Deal found 9/2![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/282:50 pm -
2 stops9h 55m
Tue 11/311:25 am -
1 stop7h 45m
Deal found 9/2![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Wed 9/2311:34 am -
1 stop9h 42m
Wed 9/3011:10 am -
1 stop8h 47m
Deal found 9/3![United Airlines logo]()
$352
This American Airlines deal was found by Cheapflights users on 9/2. 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 10/155:17 am -
1 stop9h 36m
Mon 10/1911:59 pm -
1 stop10h 38m
Deal found 9/2![American Airlines logo]()
$353
This Southwest deal was found by Cheapflights users on 9/3. 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.
Wed 9/235:25 am -
2 stops10h 45m
Tue 9/291:50 pm -
1 stop7h 20m
Deal found 9/3![Southwest logo]()
$357
This Southwest deal was found by Cheapflights users on 9/1. 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.
Wed 11/41:20 pm -
2 stops11h 20m
Mon 11/96:50 pm -
2 stops10h 30m
Deal found 9/1![Southwest logo]()
$362
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Fri 10/234:23 pm -
1 stop9h 36m
Fri 10/307:34 pm -
2 stops11h 01m
Deal found 9/4![American Airlines logo]()
$364
This Booking.com deal was found by Cheapflights users on 9/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:40 pm -
1 stop18h 37m
Sun 10/256:02 am -
1 stop14h 57m
Deal found 9/3![Alaska Airlines logo]()
$367
This American Airlines deal was found by Cheapflights users on 9/4. 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 10/2910:12 am -
1 stop8h 04m
Wed 11/46:30 am -
1 stop7h 15m
Deal found 9/4![American Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 9/3. 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.
Mon 10/263:25 pm -
2 stops11h 30m
Tue 11/36:50 am -
2 stops11h 55m
Deal found 9/3![Southwest logo]()
$369
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:40 pm -
1 stop18h 37m
Mon 10/266:02 am -
1 stop14h 57m
Deal found 9/1![Alaska Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 9/2. 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.
Wed 12/164:53 pm -
2 stops10h 05m
Wed 1/67:00 am -
2 stops13h 06m
Deal found 9/2![Delta logo]()
$370
Best flights from Maine to OntarioDiscover carefully curated flight deals from Maine to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
Discover carefully curated flight deals from Maine to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 6, 2026.
This Southwest deal was found by Cheapflights users on 9/1. 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.
Wed 10/281:05 pm -
2 stops10h 45m
Sat 10/317:40 am -
2 stops8h 45m
Deal found 9/1![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 9/1. 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.
Wed 12/164:53 pm -
2 stops10h 05m
Wed 1/67:00 am -
2 stops13h 06m
Deal found 9/1![Delta logo]()
$370
This American Airlines deal was found by Cheapflights users on 9/2. 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 1/3012:34 pm -
2 stops13h 43m
Tue 2/21:24 pm -
2 stops19h 40m
Deal found 9/2![American Airlines logo]()
$387
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/164:58 pm -
1 stop9h 44m
Wed 10/2111:13 am -
1 stop9h 46m
Deal found 9/5![Alaska Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Wed 9/2311:34 am -
1 stop11h 27m
Tue 10/68:03 am -
2 stops12h 56m
Deal found 9/2![United Airlines logo]()
$452
This Southwest deal was found by Cheapflights users on 9/3. 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.
Mon 10/263:25 pm -
2 stops11h 30m
Tue 11/36:50 am -
2 stops11h 55m
Deal found 9/3![Southwest logo]()
$369
This Delta deal was found by Cheapflights users on 9/1. 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.
Sat 11/711:55 am -
2 stops13h 48m
Sat 11/145:59 pm -
2 stops14h 59m
Deal found 9/1![Delta logo]()
$370
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Mon 1/256:13 am -
2 stops12h 15m
Sat 1/307:26 pm -
2 stops11h 50m
Deal found 9/6![American Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 9/2. 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.
Sat 12/56:00 am -
2 stops13h 28m
Sun 12/1311:08 pm -
2 stops14h 31m
Deal found 9/2![Delta logo]()
$386
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/273:23 pm -
1 stop8h 28m
Tue 11/35:00 am -
1 stop8h 02m
Deal found 9/3![United Airlines logo]()
$454
This Southwest deal was found by Cheapflights users on 9/5. 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.
Fri 10/2310:10 am -
2 stops14h 15m
Sun 10/2511:55 pm -
1 stop11h 30m
Deal found 9/5![Southwest logo]()
$424
This Delta deal was found by Cheapflights users on 9/4. 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 9/296:05 am -
1 stop9h 09m
Tue 10/65:03 pm -
1 stop10h 22m
Deal found 9/4![Delta logo]()
$387
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/174:15 pm -
1 stop9h 36m
Mon 9/289:25 am -
1 stop10h 32m
Deal found 9/3![United Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sat 9/126:00 am -
1 stop13h 30m
Wed 9/3010:55 am -
1 stop10h 15m
Deal found 9/2![Southwest logo]()
$426
This Delta deal was found by Cheapflights users on 9/2. 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.
Sat 12/56:00 am -
2 stops13h 28m
Thu 12/1012:20 pm -
1 stop8h 33m
Deal found 9/2![Delta logo]()
$396
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Fri 10/27:22 am -
2 stops16h 36m
Tue 10/66:00 am -
1 stop8h 29m
Deal found 9/2![United Airlines logo]()
$467
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/198:25 am -
2 stops15h 28m
Sat 9/2611:10 am -
1 stop8h 47m
Deal found 9/3![United Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 9/5. 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 9/225:30 am -
1 stop8h 35m
Tue 9/295:15 pm -
1 stop10h 15m
Deal found 9/5![Delta logo]()
$443
This Delta deal was found by Cheapflights users on 9/1. 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.
Sun 11/225:30 am -
1 stop8h 38m
Thu 11/2612:18 pm -
1 stop9h 55m
Deal found 9/1![Delta logo]()
$448
This United Airlines deal was found by Cheapflights users on 9/5. 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 11/1411:00 am -
2 stops12h 51m
Tue 11/174:17 pm -
2 stops15h 02m
Deal found 9/5![United Airlines logo]()
$544
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 10/21:56 pm -
2 stops11h 41m
Tue 10/610:25 am -
2 stops10h 30m
Deal found 9/1![American Airlines logo]()
$749
This Delta deal was found by Cheapflights users on 9/4. 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.
Sun 9/205:30 am -
1 stop8h 39m
Wed 9/3012:19 pm -
1 stop9h 58m
Deal found 9/4![Delta logo]()
$473
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/3111:00 am -
2 stops12h 51m
Tue 11/34:17 pm -
2 stops15h 02m
Deal found 9/4![United Airlines logo]()
$593
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 10/24:43 pm -
1 stop9h 06m
Tue 10/64:03 pm -
2 stops16h 12m
Deal found 9/1![United Airlines logo]()
$646
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Wed 2/176:30 am -
2 stops15h 14m
Sat 2/206:53 pm -
2 stops13h 30m
Deal found 9/3![United Airlines logo]()
$796
This United Airlines deal was found by Cheapflights users on 9/1. 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 2/116:30 am -
2 stops15h 14m
Sat 2/206:53 pm -
2 stops13h 30m
Deal found 9/1![United Airlines logo]()
$875
Last-minute flights from Maine to OntarioDiscover last-minute flight deals from Maine to Ontario. Data last updated September 6, 2026 and is based on user searches.
Discover last-minute flight deals from Maine to Ontario. Data last updated September 6, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Wed 9/2311:34 am -
1 stop9h 42m
Wed 9/3011:10 am -
1 stop8h 47m
Deal found 9/3![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 9/3. 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.
Wed 9/235:25 am -
2 stops10h 45m
Tue 9/291:50 pm -
1 stop7h 20m
Deal found 9/3![Southwest logo]()
$357
This American Airlines deal was found by Cheapflights users on 9/2. 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 10/155:17 am -
1 stop9h 36m
Mon 10/1911:59 pm -
1 stop10h 38m
Deal found 9/2![American Airlines logo]()
$353
This Mytrip deal was found by Cheapflights users on 9/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:40 pm -
1 stop18h 37m
Mon 10/266:02 am -
1 stop14h 57m
Deal found 9/1![Alaska Airlines logo]()
$370
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Fri 10/234:23 pm -
1 stop9h 36m
Fri 10/307:34 pm -
2 stops11h 01m
Deal found 9/4![American Airlines logo]()
$364
This Booking.com deal was found by Cheapflights users on 9/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:40 pm -
1 stop18h 37m
Sun 10/256:02 am -
1 stop14h 57m
Deal found 9/3![Alaska Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 9/3. 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.
Mon 10/263:25 pm -
2 stops11h 30m
Tue 11/36:50 am -
2 stops11h 55m
Deal found 9/3![Southwest logo]()
$369
This Delta deal was found by Cheapflights users on 9/2. 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.
Wed 10/287:55 am -
1 stop12h 17m
Wed 11/41:35 pm -
1 stop7h 24m
Deal found 9/2![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/2812:50 pm -
2 stops11h 00m
Mon 11/22:45 pm -
1 stop7h 25m
Deal found 9/2![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/282:50 pm -
2 stops9h 55m
Tue 11/38:40 am -
2 stops10h 30m
Deal found 9/2![Southwest logo]()
$347
This American Airlines deal was found by Cheapflights users on 9/4. 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 10/2910:12 am -
1 stop8h 04m
Wed 11/46:30 am -
1 stop7h 15m
Deal found 9/4![American Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 9/4. 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.
Thu 10/295:00 am -
1 stop7h 55m
Tue 11/36:50 am -
2 stops12h 00m
Deal found 9/4![Southwest logo]()
$372
One-way flights from Maine to OntarioSearch for one-way flight options from Maine to Ontario. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
Search for one-way flight options from Maine to Ontario. Find affordable one-way fares based on user searches. Data last updated September 6, 2026.
This Delta deal was found by Cheapflights users on 9/1. 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.
Wed 10/287:55 am -
1 stop12h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Delta logo]()
$169
This Trip.com deal was found by Cheapflights users on 9/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:13 am -
1 stop11h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Alaska Airlines logo]()
$172
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/281:05 pm -
2 stops10h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Southwest logo]()
$174
This Mytrip deal was found by Cheapflights users on 9/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:03 am -
1 stop32h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Alaska Airlines logo]()
$175
This Delta deal was found by Cheapflights users on 9/4. 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 10/206:05 am -
1 stop9h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Delta logo]()
$179
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Wed 9/305:08 pm -
1 stop8h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$180
This Alaska Airlines deal was found by Cheapflights users on 9/2. 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 9/167:12 am -
1 stop10h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Alaska Airlines logo]()
$184
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Wed 10/145:17 am -
1 stop9h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![American Airlines logo]()
$185
This Southwest deal was found by Cheapflights users on 9/2. 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.
Sun 1/105:35 am -
2 stops10h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Southwest logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2411:42 am -
2 stops26h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$187
This Booking.com deal was found by Cheapflights users on 9/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:59 pm -
1 stop17h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Alaska Airlines logo]()
$189
This Delta deal was found by Cheapflights users on 9/4. 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 9/297:55 am -
1 stop12h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Delta logo]()
$194
Find flight deals from Maine to Ontario
Keep the following information in mind while searching for Maine to Ontario flight deals. Data was last updated September 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $337 (Delta) |
One-way from | $169 (Delta) |
Popular in | July |
Cheapest in | February |
Average price | $378 |
Cheapflights Fare Finder
Customize your flight search to find flights from Maine to Ontario 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 7,457,451 searches. Data last updated September 6, 2026.
Use the filters below to find and compare flights from Maine to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Wed 10/28
6:50 pm-11:55 pm
1 stop8h 05m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$169
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Wed 9/16
7:55 am-5:19 pm
1 stop12h 24m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$184
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Mon 9/21
7:55 am-5:19 pm
1 stop12h 24m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$184
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Sat 1/9
4:25 pm-10:48 pm
1 stop9h 23m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$194
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Wed 9/30
3:20 pm-10:05 pm
2 stops9h 45m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$225
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Wed 9/16
5:45 am-2:05 pm
2 stops11h 20m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$226
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Tue 9/22
9:33 am-5:18 pm
1 stop10h 45m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$230
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Thu 10/29
3:23 pm-8:51 pm
1 stop8h 28m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$235
PortlandOntario
PWM Portland - ONT Ontario
PWMONT
Portland
Wed 10/28
3:23 pm-8:51 pm
1 stop8h 28m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$235
BostonOntario
BOS Boston Logan Intl - ONT Ontario
BOSONT
Boston Logan Intl
Sat 9/19
3:16 pm-10:59 pm
1 stop10h 43m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$239
Showing 1-10 of 52 resultsSorted by cheapest first
Best time to book a flight from Maine to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Maine with our price prediction graph.
BOS-ONT
PWM-ONT
BGR-ONT
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.
Cheapflights Insights
Everything you need to know about your flight from Maine to Ontario
USME-ONT
BOS-ONT
PWM-ONT
BGR-ONT
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Maine to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Ontario flight routes
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Alternative routes for Maine to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Maine to Ontario by cabin class
Find flights from Maine to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 6, 2026.
Maine and Ontario flights
Browse other Maine and Ontario flight options. Last updated on September 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Maine to Ontario flights
Consider these flights traveling from Maine to Ontario.
Top 2 airlines flying from Maine to Ontario
Discover the top 2 airlines that operate flights from Maine to Ontario. 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 7,457,451 searches. Data last updated September 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$302 | Average$373 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$360 | Average$512 | FlexibilityNo cancel fee | On-time71% |