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$462+ Cheap flights from Ontario to Lewiston, ID (ONT - LWS)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LWS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Ontario to Lewiston

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Lewiston (LWS). 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 September 11, 2025.

Round-trip from

$462
(Delta)

Popular in

February

Cheapest in

January

Average price

$353
From Ontario to Lewiston Nez Perce Rgnl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($76 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($32 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 Ontario to Lewiston

Cheapest flights from Ontario to Lewiston
Explore the most affordable flight options available from Ontario to Lewiston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 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.
Sat 9/276:00 amONT - LWS
1 stop7h 22mDelta
Wed 10/12:02 pmLWS - ONT
2 stops8h 38mDelta
Deal found 9/10$462
This Delta deal was found by Cheapflights users on 9/11. 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 11/71:15 pmONT - LWS
2 stops7h 48mDelta
Sat 11/157:00 amLWS - ONT
2 stops9h 09mDelta
Deal found 9/11$552

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Lewiston 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 September 11, 2025.
Use the filters below to find and compare flights from Ontario to Lewiston that are best for you.

Fly from

Ontario

Fly to

Lewiston

Route

Depart

Return

Price

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Sat 9/27

6:00 am-1:22 pm

1 stop7h 22m

Lewiston Nez Perce Rgnl

Wed 10/1

2:02 pm-10:40 pm

2 stops8h 38m

$462

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Fri 11/7

1:15 pm-9:03 pm

2 stops7h 48m

Lewiston Nez Perce Rgnl

Sat 11/15

7:00 am-4:09 pm

2 stops9h 09m

$552

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Ontario to Lewiston

Have a flexible travel schedule? Discover the best time to fly to Lewiston from Ontario 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 Ontario to Lewiston

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

Currently, February is the cheapest month in which you can book a flight from Ontario to Lewiston, Idaho (average of $278). Flying from Ontario to Lewiston, Idaho in May is currently the most expensive (average of $524). 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 Ontario to Lewiston. 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 Ontario to Lewiston, Idaho?

    There are many flights that can get you from Ontario to Lewiston, Idaho in 7h 22m. Fly via Delta to get the fastest option. Airlines will cover a distance of 851 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Lewiston 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 Ontario to Lewiston, Idaho?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Lewiston, Idaho (average of $278). Flying from Ontario to Lewiston, Idaho in May is currently the most expensive (average of $524). 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.

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