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$345+ Cheap flights from Lewiston, ID to St. Louis (LWS - STL)

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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
LWS — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Lewiston to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Lewiston (LWS) to St. Louis (STL). 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

$345
(Delta)
From Lewiston Nez Perce Rgnl to Lambert-St Louis
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Best flights from Lewiston to St. Louis
Discover carefully curated flight deals from Lewiston to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

This Delta deal was found by Cheapflights users on 9/9. 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 2/287:05 amLWS - STL
2 stops15h 32mDelta
Tue 3/36:59 pmSTL - LWS
2 stops28h 03mDelta
Deal found 9/9$345

Cheapflights Fare Finder

 
Customize your flight search to find flights from Lewiston to St. Louis 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 Lewiston to St. Louis that are best for you.

Fly from

Lewiston

Fly to

St. Louis

Route

Depart

Return

Price

LewistonSt. Louis

LWS - STL

LWSSTL

Lewiston Nez Perce Rgnl

Sat 2/28

7:05 am-12:37 am

2 stops15h 32m

Lambert-St Louis

Tue 3/3

6:59 pm-9:02 pm

2 stops28h 03m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Lewiston to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis 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 St. Louis

What is the cheapest month to book a flight from Lewiston, Idaho to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Lewiston, Idaho to St. Louis (average of $311). Flying from Lewiston, Idaho to St. Louis in March is currently the most expensive (average of $356). 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 St. Louis. 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 St. Louis?

    Delta can get you from Lewiston, Idaho to St. Louis in just under 15h 32m. Your travel time can differ by up to . Lewiston, Idaho and St. Louis are separated by a distance of 1445 mi.

  • Can I find deals for flights from Lewiston to St. Louis that include hotel bookings?

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

  • How can I find direct flights from Lewiston to St. Louis?

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

  • Can I find deals for business class flights from Lewiston to St. Louis?

    Yes. Cheapflights offers flight deals from Lewiston to St. Louis 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 St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Lewiston, Idaho to St. Louis (average of $311). Flying from Lewiston, Idaho to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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