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$338+ Cheap flights from Lewiston, ID to St. Louis (LWS - STL)

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
LWS — STL
May 25 — Jun 11
Mon 5/25
Mon 6/1
1 adult, Economy
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Cheap flight deals from Lewiston to St. Louis

Cheapest flights from Lewiston to St. Louis
Explore the most affordable flight options available from Lewiston to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2026.

This Delta deal was found by Cheapflights users on 4/21. 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 6/309:14 am
LWS
-
STL
2 stops9h 25m
Delta
Wed 7/82:28 pm
STL
-
LWS
2 stops10h 31m
Delta
Deal found 4/21$662

Find 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 April 25, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$662
(Delta)

One-way from

$338
(Delta)
Provider with most accurate pricing for Lewiston Nez Perce Rgnl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Lewiston Nez Perce Rgnl-Lambert-St Louis flights.
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From Lewiston Nez Perce Rgnl to Lambert-St Louis
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One-way flight from Lewiston Nez Perce Rgnl to Lambert-St Louis
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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 April 25, 2026.
Use the filters below to find and compare flights from Lewiston to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LewistonSt. Louis

LWS - STL

LWSSTL

Lewiston Nez Perce Rgnl

Tue 6/30

9:14 am-8:39 pm

2 stops9h 25m

Lambert-St Louis

Wed 7/8

2:28 pm-10:59 pm

2 stops10h 31m

$662
Cheapest one-way
Quickest one-way

LewistonSt. Louis

LWS - STL

LWSSTL

Lewiston Nez Perce Rgnl

Fri 5/22

8:25 am-12:30 am

2 stops14h 05m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Lewiston, Idaho-St. Louis flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Lewiston, Idaho-St. Louis flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Lewiston, Idaho-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lewiston, Idaho-St. Louis flights, Cheapflights users trust Expedia the most. Expedia 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-St. Louis 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 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.

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 9h 25m. 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.

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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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