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Lewiston

$342+ Cheap flights from Ontario to Lewiston, ID (ONT - LWS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LWS
Jul 9 — Jul 161
Thu 7/9
Thu 7/16
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 June 9, 2026.

This Delta deal was found by Cheapflights users on 6/5. 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.
Wed 8/196:00 am
ONT
-
LWS
1 stop5h 43m
Delta
Tue 8/259:23 am
LWS
-
ONT
1 stop7h 58m
Delta
Deal found 6/5$406
This Delta deal was found by Cheapflights users on 6/4. 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.
Fri 9/186:00 pm
ONT
-
LWS
1 stop5h 08m
Delta
Wed 9/3012:09 pm
LWS
-
ONT
1 stop4h 24m
Delta
Deal found 6/4$416
This Delta deal was found by Cheapflights users on 6/6. 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 7/65:59 pm
ONT
-
LWS
1 stop5h 20m
Delta
Sat 7/1112:18 pm
LWS
-
ONT
2 stops10h 34m
Delta
Deal found 6/6$422
This Delta deal was found by Cheapflights users on 6/6. 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.
Wed 7/296:00 am
ONT
-
LWS
1 stop5h 37m
Delta
Sat 8/112:18 pm
LWS
-
ONT
1 stop4h 12m
Delta
Deal found 6/6$502
This Delta deal was found by Cheapflights users on 6/6. 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.
Wed 7/81:00 pm
ONT
-
LWS
2 stops9h 57m
Delta
Sat 7/1112:18 pm
LWS
-
ONT
2 stops10h 34m
Delta
Deal found 6/6$523

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 June 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$406
(Delta)

One-way from

$342
(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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One-way flight 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 June 9, 2026.
Use the filters below to find and compare flights from Ontario to Lewiston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Wed 8/19

6:00 am-11:43 am

1 stop5h 43m

Lewiston Nez Perce Rgnl

Tue 8/25

9:23 am-5:21 pm

1 stop7h 58m

$406
Quickest round-trip

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Fri 9/18

6:00 pm-11:08 pm

1 stop5h 08m

Lewiston Nez Perce Rgnl

Wed 9/30

12:09 pm-4:33 pm

1 stop4h 24m

$416

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Mon 7/6

5:59 pm-11:19 pm

1 stop5h 20m

Lewiston Nez Perce Rgnl

Sat 7/11

12:18 pm-10:52 pm

2 stops10h 34m

$422

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Wed 7/29

6:00 am-11:37 am

1 stop5h 37m

Lewiston Nez Perce Rgnl

Sat 8/1

12:18 pm-4:30 pm

1 stop4h 12m

$502

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Wed 7/8

1:00 pm-10:57 pm

2 stops9h 57m

Lewiston Nez Perce Rgnl

Sat 7/11

12:18 pm-10:52 pm

2 stops10h 34m

$523
Cheapest one-way

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Wed 8/19

6:00 am-11:43 am

1 stop5h 43m

$347
Quickest one-way

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Sun 6/28

5:59 pm-11:19 pm

1 stop5h 20m

$362

OntarioLewiston

ONT - LWS

ONTLWS

Ontario

Sun 7/19

1:00 pm-10:57 pm

2 stops9h 57m

$450

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/5

Sorted by cheapest first

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 June.
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.

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 43m. 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.

See more FAQs

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