$150+ Cheap flights from Ontario (ONT) to Maine
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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PWM
Oct 7 — Oct 141
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ontario to Maine 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Maine
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to MaineExplore the most affordable flight options available from Ontario to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
Explore the most affordable flight options available from Ontario to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 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.
Sat 10/171:35 pm -
1 stop7h 24m
Thu 10/226:05 am -
1 stop9h 31m
Deal found 9/2![Delta logo]()
$337
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:02 am -
1 stop14h 57m
Tue 11/37:13 am -
1 stop11h 00m
Deal found 9/4![Alaska Airlines logo]()
$338
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 10/2411:13 am -
1 stop9h 46m
Tue 10/276:40 pm -
1 stop18h 37m
Deal found 9/3![Alaska Airlines logo]()
$340
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.
Sat 9/2611:10 am -
1 stop8h 47m
Sat 10/36:00 am -
2 stops9h 46m
Deal found 9/2![United Airlines logo]()
$342
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:29 pm -
1 stop10h 18m
Sat 10/318:45 am -
1 stop9h 31m
Deal found 9/3![American Airlines logo]()
$346
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.
Fri 12/46:40 pm -
1 stop10h 17m
Tue 12/82:59 pm -
1 stop8h 21m
Deal found 9/3![United Airlines logo]()
$347
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.
Mon 11/28:45 pm -
2 stops10h 00m
Thu 11/55:00 am -
1 stop12h 05m
Deal found 9/2![Southwest logo]()
$348
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:47 am -
1 stop16h 22m
Fri 10/27:59 pm -
1 stop17h 18m
Deal found 9/3![Alaska Airlines logo]()
$351
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.
Fri 10/165:03 pm -
1 stop10h 22m
Thu 10/226:05 am -
1 stop9h 31m
Deal found 9/2![Delta 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.
Mon 10/1211:59 pm -
1 stop9h 04m
Tue 10/205:17 am -
1 stop11h 13m
Deal found 9/2![American Airlines logo]()
$353
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.
Sat 10/2410:10 pm -
1 stop10h 16m
Fri 10/304:23 pm -
1 stop9h 36m
Deal found 9/4![American Airlines logo]()
$359
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:25 am -
2 stops10h 31m
Tue 10/611:57 am -
2 stops13h 43m
Deal found 9/5![American Airlines logo]()
$417
Best flights from Ontario to MaineDiscover carefully curated flight deals from Ontario to Maine that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from Ontario to Maine that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:04 pm -
1 stop10h 16m
Wed 11/257:50 am -
1 stop12h 29m
Deal found 9/3![Delta logo]()
$352
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.
Thu 11/58:45 pm -
2 stops10h 00m
Wed 11/111:20 pm -
2 stops11h 20m
Deal found 9/2![Southwest logo]()
$362
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:13 am -
1 stop9h 46m
Fri 10/304:46 pm -
1 stop10h 08m
Deal found 9/3![Alaska Airlines logo]()
$398
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 11/105:00 am -
1 stop8h 02m
Wed 11/113:23 pm -
1 stop8h 28m
Deal found 9/3![United Airlines logo]()
$469
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:54 am -
1 stop9h 35m
Tue 9/294:00 pm -
1 stop9h 40m
Deal found 9/3![Delta logo]()
$352
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:09 pm -
1 stop10h 31m
Wed 11/119:03 am -
1 stop12h 14m
Deal found 9/6![Alaska Airlines logo]()
$407
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.
Mon 10/511:54 am -
1 stop9h 35m
Sat 10/177:55 am -
1 stop12h 17m
Deal found 9/4![Delta logo]()
$387
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.
Fri 11/208:35 am -
2 stops12h 15m
Fri 11/275:20 am -
2 stops11h 45m
Deal found 9/2![Southwest logo]()
$452
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:13 am -
1 stop9h 46m
Fri 10/304:58 pm -
1 stop9h 44m
Deal found 9/6![Alaska Airlines logo]()
$413
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.
Fri 9/256:00 pm -
1 stop10h 40m
Thu 10/17:55 am -
1 stop12h 24m
Deal found 9/5![Delta logo]()
$387
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:00 am -
1 stop8h 02m
Fri 11/138:47 am -
2 stops17h 01m
Deal found 9/6![United Airlines logo]()
$494
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:55 pm -
1 stop12h 00m
Wed 9/235:25 am -
2 stops10h 45m
Deal found 9/6![Southwest logo]()
$464
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:13 am -
1 stop9h 46m
Sun 11/17:13 am -
1 stop11h 00m
Deal found 9/3![Alaska Airlines logo]()
$427
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:00 am -
1 stop8h 43m
Tue 10/205:15 am -
2 stops15h 26m
Deal found 9/6![United Airlines logo]()
$494
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2711:13 am -
1 stop9h 46m
Sun 11/17:13 am -
1 stop11h 00m
Deal found 9/3![Alaska Airlines logo]()
$427
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:00 pm -
1 stop8h 42m
Wed 9/306:05 am -
1 stop9h 09m
Deal found 9/6![Delta logo]()
$433
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.
Mon 9/286:00 am -
2 stops14h 28m
Fri 10/25:08 pm -
1 stop8h 41m
Deal found 9/4![United Airlines logo]()
$571
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/217:00 am -
2 stops13h 06m
Sun 1/2412:50 pm -
2 stops12h 24m
Deal found 9/6![Delta logo]()
$510
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 10/244:03 pm -
2 stops15h 16m
Sat 10/3111:00 am -
2 stops12h 51m
Deal found 9/3![United Airlines logo]()
$573
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/176:00 am -
2 stops14h 28m
Thu 10/225:08 pm -
1 stop8h 41m
Deal found 9/7![United Airlines logo]()
$581
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 2/66:53 pm -
2 stops12h 39m
Tue 2/911:15 am -
2 stops36h 05m
Deal found 9/3![United Airlines logo]()
$622
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 10/175:00 am -
2 stops13h 39m
Sat 10/244:43 pm -
1 stop9h 08m
Deal found 9/3![United Airlines logo]()
$870
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 9/265:00 am -
2 stops13h 39m
Tue 9/294:43 pm -
1 stop9h 06m
Deal found 9/5![United Airlines logo]()
$892
Last-minute flights from Ontario to MaineDiscover last-minute flight deals from Ontario to Maine. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Maine. Data last updated September 7, 2026 and is based on user searches.
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.
Fri 9/187:13 pm -
1 stop10h 01m
Sun 9/206:00 am -
1 stop9h 12m
Deal found 9/4![United Airlines logo]()
$362
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.
Sat 9/2611:10 am -
1 stop8h 47m
Sat 10/36:00 am -
2 stops9h 46m
Deal found 9/2![United Airlines logo]()
$342
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:47 am -
1 stop16h 22m
Fri 10/27:59 pm -
1 stop17h 18m
Deal found 9/3![Alaska Airlines logo]()
$351
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:25 am -
2 stops10h 31m
Tue 10/611:57 am -
2 stops13h 43m
Deal found 9/5![American Airlines logo]()
$417
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:15 pm -
1 stop10h 15m
Wed 10/76:05 am -
1 stop9h 31m
Deal found 9/3![Delta 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.
Mon 10/1211:59 pm -
1 stop9h 04m
Tue 10/205:17 am -
1 stop11h 13m
Deal found 9/2![American Airlines logo]()
$353
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.
Fri 10/165:03 pm -
1 stop10h 22m
Wed 10/215:30 am -
1 stop8h 36m
Deal found 9/2![Delta logo]()
$352
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 10/177:07 am -
1 stop9h 00m
Wed 10/216:05 am -
1 stop9h 31m
Deal found 9/2![Delta logo]()
$337
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 10/2411:13 am -
1 stop9h 46m
Tue 10/276:40 pm -
1 stop18h 37m
Deal found 9/3![Alaska Airlines logo]()
$340
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.
Sat 10/2410:10 pm -
1 stop10h 16m
Fri 10/304:23 pm -
1 stop9h 36m
Deal found 9/4![American Airlines logo]()
$359
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:02 am -
1 stop14h 57m
Tue 11/37:13 am -
1 stop11h 00m
Deal found 9/4![Alaska Airlines logo]()
$338
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:29 pm -
1 stop10h 18m
Sat 10/318:45 am -
1 stop9h 31m
Deal found 9/3![American Airlines logo]()
$346
One-way flights from Ontario to MaineSearch for one-way flight options from Ontario to Maine. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
Search for one-way flight options from Ontario to Maine. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:45 am -
2 stops20h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$150
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 1/56:53 pm -
1 stop10h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$164
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:00 pm -
1 stop8h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$169
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:02 am -
1 stop14h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Alaska Airlines logo]()
$174
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.
Wed 12/26:40 pm -
1 stop10h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![United Airlines logo]()
$179
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:01 pm -
2 stops19h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$181
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:23 pm -
2 stops17h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$182
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:13 am -
1 stop9h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Alaska Airlines logo]()
$184
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.
Mon 10/1211:59 pm -
1 stop9h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![American Airlines logo]()
$185
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.
Wed 9/231:04 pm -
1 stop7h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![American Airlines logo]()
$186
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:23 pm -
2 stops18h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$188
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:20 pm -
2 stops9h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Southwest logo]()
$189
Find flight deals from Ontario to Maine
Keep the following information in mind while searching for Ontario to Maine flight deals. Data was last updated September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $332 (United Airlines) |
One-way from | $150 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $403 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Maine 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 7, 2026.
Use the filters below to find and compare flights from Ontario to Maine that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Tue 1/5
6:53 pm-8:00 am
1 stop10h 07m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$164
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Sat 10/31
11:13 am-11:59 pm
1 stop9h 46m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$169
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Wed 9/16
11:54 am-12:29 am
1 stop9h 35m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$184
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Sat 10/31
6:30 am-7:25 pm
1 stop9h 55m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$184
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Thu 1/28
4:16 pm-5:40 am
1 stop10h 24m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$184
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Fri 10/30
11:55 pm-11:35 am
1 stop8h 40m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$184
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Fri 10/2
6:00 pm-7:40 am
1 stop10h 40m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$184
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Tue 10/20
11:13 am-11:59 pm
1 stop9h 46m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$184
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Fri 1/29
4:16 pm-5:40 am
1 stop10h 24m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$184
Quickest round-trip
OntarioBoston
ONT Ontario - BOS Boston Logan Intl
ONTBOS
Ontario
Thu 10/22
12:40 pm-11:15 pm
1 stop7h 35m
Boston Logan Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$185
Showing 1-10 of 50 resultsSorted by cheapest first
Best time to book a flight from Ontario to Maine
Have a flexible travel schedule? Discover the best time to fly to Maine from Ontario with our price prediction graph.
ONT-BOS
ONT-PWM
ONT-BGR
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 Ontario to Maine
ONT-USME
ONT-BOS
ONT-PWM
ONT-BGR
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Maine
Get insights into the airlines that provide service to Maine. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Maine. Reviews last updated September 7, 2026.
See what other customers who have flown with United Airlines and American Airlines from Ontario to Maine have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Food
6.6
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Crew
8.1
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Food
6.6
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Crew
8.1
Overall
7.4
Boarding
7.7
Entertainment
7.1
Comfort
7.3
Food
6.6
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario to Maine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Ontario to Maine
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Maine by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Maine by cabin class
Find flights from Ontario to Maine, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Maine flights
Browse other Ontario and Maine flight options. Last updated on September 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Maine flights
Consider these flights traveling from Ontario to Maine.
Top 2 airlines flying from Ontario to Maine
Discover the top 2 airlines that operate flights from Ontario to Maine. 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 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$379 | Average$574 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$409 | Average$503 | FlexibilityNo cancel fee | On-time69% |