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$366+ Cheap flights from Lewiston, ID to Ontario (LWS - 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
LWS — ONT
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Lewiston to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Lewiston (LWS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 11, 2025.

Round-trip from

$366
(Delta)

Popular in

May

Cheapest in

January

Average price

$318
From Lewiston Nez Perce Rgnl to Ontario
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Highest demand for flights based on searches. 38% potential increase in price ($284 potential increase over avg. RT price).
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Cheapest flight prices on average. 19% potential price decrease ($74 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Lewiston to Ontario

Best flights from Lewiston to Ontario
Discover carefully curated flight deals from Lewiston to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated septiembre 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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.
mar. 3/37:05 amLWS - ONT
1 stop8h 15mDelta
sáb. 3/76:00 amONT - LWS
1 stop5h 50mDelta
Deal found 9/10$366
This Delta deal was found by Cheapflights users on 9/10. 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.
jue. 2/127:05 amLWS - ONT
2 stops9h 14mDelta
lun. 2/166:00 amONT - LWS
1 stop5h 50mDelta
Deal found 9/10$522

Cheapflights Fare Finder

 
Customize your flight search to find flights from Lewiston 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 2,558,603 searches. Data last updated septiembre 11, 2025.
Use the filters below to find and compare flights from Lewiston to Ontario that are best for you.

Fly from

Lewiston

Fly to

Ontario

Route

Depart

Return

Price

LewistonOntario

LWS - ONT

LWSONT

Lewiston Nez Perce Rgnl

mar. 3/3

7:05 am-3:20 pm

1 stop8h 15m

Ontario

sáb. 3/7

6:00 am-11:50 am

1 stop5h 50m

$366

LewistonOntario

LWS - ONT

LWSONT

Lewiston Nez Perce Rgnl

jue. 2/12

7:05 am-4:19 pm

2 stops9h 14m

Ontario

lun. 2/16

6:00 am-11:50 am

1 stop5h 50m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Lewiston to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Lewiston with our price prediction graph.
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 Lewiston to Ontario

What is the cheapest month to book a flight from Lewiston, Idaho to Ontario?

Currently, August is the cheapest month in which you can book a flight from Lewiston, Idaho to Ontario (average of $246). Flying from Lewiston, Idaho to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Lewiston to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Lewiston, Idaho to Ontario?

    A quick flight from Lewiston, Idaho to Ontario can take about 8h 15m. Delta provides one of the quickest options available for as low as $366. There are 851 mi between Lewiston, Idaho and Ontario.

  • Can I find deals for flights from Lewiston to Ontario that include hotel bookings?

    Yes. In addition to deals on Lewiston to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Lewiston to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lewiston to Ontario.

  • Can I find deals for business class flights from Lewiston to Ontario?

    Yes. Cheapflights offers flight deals from Lewiston to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Lewiston, Idaho to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Lewiston, Idaho to Ontario (average of $246). Flying from Lewiston, Idaho to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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