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$355+ 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
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$355
(Delta)
Provider with most accurate pricing for Lewiston Nez Perce Rgnl-Ontario flight deals.
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Provider most trusted by Cheapflights users for Lewiston Nez Perce Rgnl-Ontario flights.
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From Lewiston Nez Perce Rgnl to Ontario
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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 October 29, 2025.

This Delta deal was found by Cheapflights users on 10/26. 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.
Tue 3/37:05 amLWS - ONT
1 stop8h 15mDelta
Sat 3/76:45 amONT - LWS
1 stop14h 17mDelta
Deal found 10/26$355
This Delta deal was found by Cheapflights users on 10/27. 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.
Sat 3/146:25 amLWS - ONT
1 stop4h 49mDelta
Wed 3/186:00 amONT - LWS
1 stop5h 50mDelta
Deal found 10/27$366
This Delta deal was found by Cheapflights users on 10/28. 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.
Thu 2/1212:30 pmLWS - ONT
2 stops10h 08mDelta
Mon 2/166:00 amONT - LWS
1 stop5h 50mDelta
Deal found 10/28$698

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 October 29, 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

Tue 3/3

7:05 am-3:20 pm

1 stop8h 15m

Ontario

Sat 3/7

6:45 am-9:02 pm

1 stop14h 17m

$355

LewistonOntario

LWS - ONT

LWSONT

Lewiston Nez Perce Rgnl

Sat 3/14

6:25 am-11:14 am

1 stop4h 49m

Ontario

Wed 3/18

6:00 am-11:50 am

1 stop5h 50m

$366

LewistonOntario

LWS - ONT

LWSONT

Lewiston Nez Perce Rgnl

Thu 2/12

12:30 pm-10:38 pm

2 stops10h 08m

Ontario

Mon 2/16

6:00 am-11:50 am

1 stop5h 50m

$698

LewistonOntario

LWS - ONT

LWSONT

Lewiston Nez Perce Rgnl

Mon 11/10

7:00 am-4:09 pm

2 stops9h 09m

$489

LewistonOntario

LWS - ONT

LWSONT

Lewiston Nez Perce Rgnl

Sun 11/9

12:23 pm-10:55 pm

2 stops10h 32m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Compare providers for flights from Lewiston to Ontario

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 Lewiston to Ontario in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Lewiston, Idaho-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lewiston, Idaho-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Lewiston, Idaho-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lewiston, Idaho-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Lewiston, Idaho-Ontario 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 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 $45). Flying from Lewiston, Idaho to Ontario in December is currently the most expensive (average of $193). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated October 29, 2025.
Get a feel of what it's like to fly with Delta from Lewiston to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 $355. 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 $45). Flying from Lewiston, Idaho to Ontario in December is currently the most expensive (average of $193). 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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Top airline flying from Lewiston to Ontario

Discover the top airline that operate flights from Lewiston to Ontario. 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 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$398Average$426FlexibilityNo cancel feeOn-timeN/A

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