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Lewiston

$335+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LWS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This Delta deal was found by Cheapflights users on 1/26. 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 4/85:53 pm
ONT
-
LWS
1 stop5h 07m
Delta
Wed 4/156:09 am
LWS
-
ONT
1 stop7h 30m
Delta
Deal found 1/26$335
This Delta deal was found by Cheapflights users on 1/26. 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 4/811:59 am
ONT
-
LWS
1 stop11h 01m
Delta
Tue 4/1412:13 pm
LWS
-
ONT
2 stops10h 24m
Delta
Deal found 1/26$340
This Delta deal was found by Cheapflights users on 1/26. 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 4/96:00 am
ONT
-
LWS
1 stop5h 27m
Delta
Wed 4/156:09 am
LWS
-
ONT
1 stop16h 28m
Delta
Deal found 1/26$356
This Delta deal was found by Cheapflights users on 1/26. 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 4/96:00 am
ONT
-
LWS
1 stop5h 27m
Delta
Tue 4/1412:13 pm
LWS
-
ONT
2 stops25h 26m
Delta
Deal found 1/26$361
This Delta deal was found by Cheapflights users on 1/28. 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 2/283:30 pm
ONT
-
LWS
1 stop5h 22m
Delta
Sat 3/77:00 am
LWS
-
ONT
1 stop6h 54m
Delta
Deal found 1/28$387
This Delta deal was found by Cheapflights users on 1/27. 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 4/166:00 am
ONT
-
LWS
1 stop5h 33m
Delta
Sat 4/256:09 am
LWS
-
ONT
1 stop5h 04m
Delta
Deal found 1/27$412
This Delta deal was found by Cheapflights users on 1/29. 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 2/133:30 pm
ONT
-
LWS
1 stop5h 22m
Delta
Tue 2/177:00 am
LWS
-
ONT
1 stop6h 54m
Delta
Deal found 1/29$476

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$335
(Delta)
Provider with most accurate pricing for Ontario-Lewiston Nez Perce Rgnl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Lewiston Nez Perce Rgnl flights.
Search Deals
From Ontario to Lewiston Nez Perce Rgnl
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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 January 29, 2026.
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

Wed 4/8

5:53 pm-11:00 pm

1 stop5h 07m

Lewiston Nez Perce Rgnl

Wed 4/15

6:09 am-1:39 pm

1 stop7h 30m

$335

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Wed 4/8

11:59 am-11:00 pm

1 stop11h 01m

Lewiston Nez Perce Rgnl

Tue 4/14

6:09 am-11:13 am

1 stop5h 04m

$335

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Thu 4/9

6:00 am-11:27 am

1 stop5h 27m

Lewiston Nez Perce Rgnl

Wed 4/15

6:09 am-10:37 pm

1 stop16h 28m

$356

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Thu 4/9

6:00 am-11:27 am

1 stop5h 27m

Lewiston Nez Perce Rgnl

Tue 4/14

6:09 am-5:15 pm

1 stop11h 06m

$356

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Sat 2/28

3:30 pm-8:52 pm

1 stop5h 22m

Lewiston Nez Perce Rgnl

Sat 3/7

7:00 am-1:54 pm

1 stop6h 54m

$387

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Thu 4/16

6:00 am-11:33 am

1 stop5h 33m

Lewiston Nez Perce Rgnl

Sat 4/25

6:09 am-11:13 am

1 stop5h 04m

$412

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Compare providers for flights from Ontario to Lewiston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Lewiston in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Lewiston, Idaho flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Lewiston, Idaho flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Lewiston, Idaho flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Lewiston, Idaho flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Lewiston, Idaho flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, June is the cheapest month in which you can book a flight from Ontario to Lewiston, Idaho (average of $39). Flying from Ontario to Lewiston, Idaho in March is currently the most expensive (average of $186). 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 5h 07m. 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, June is the cheapest month in which you can book a flight from Ontario to Lewiston, Idaho (average of $39). Flying from Ontario to Lewiston, Idaho in March is currently the most expensive (average of $186). 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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