What is the cheapest airline to fly from Lewiston, Idaho to St. Louis round-trip?

According to our current data, Delta ($702), offers the cheapest pricing from Lewiston, Idaho to St. Louis.

What is the cheapest day to fly from Lewiston, Idaho to St. Louis?

Travelers seeking maximum savings on their Lewiston, Idaho to St. Louis flight should consider departing on Friday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest time of day to fly from LWS to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Lewiston, Idaho to St. Louis as you normally would.

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.

$702+ Flights from Lewiston, ID to St. Louis

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Cheap flight deals from Lewiston to St. Louis

Round-trip from	$702 (Delta)

From Lewiston Nez Perce Rgnl to Lambert-St Louis

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Find 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 July 29, 2025.

Fri 8/227:05 amLWS - STL

2 stops9h 11mDelta

Wed 9/37:35 amSTL - LWS

1 stop7h 44mDelta

Deal found 7/28

$702

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 July 29, 2025.

Fri 8/227:05 amLWS - STL

2 stops9h 11mDelta

Wed 9/37:35 amSTL - LWS

1 stop7h 44mDelta

Deal found 7/28

$702

Last-minute flights from Lewiston to St. Louis
Discover last-minute flight deals from Lewiston to St. Louis. Data last updated July 29, 2025 and is based on user searches.

Fri 8/227:05 amLWS - STL

2 stops9h 11mDelta

Wed 9/37:35 amSTL - LWS

1 stop7h 44mDelta

Deal found 7/28

$702

Fly from

Fly to

Route

Depart

Return

Price

LewistonSt. Louis

LWS - STL

LWSSTL

Lewiston Nez Perce Rgnl

Fri 8/22

7:05 am-6:16 pm

2 stops9h 11m

Lambert-St Louis

Wed 9/3

7:35 am-1:19 pm

1 stop7h 44m

$702

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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.

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Lewiston to St. Louis, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,979 reviews

Delta

8.0

Very good

7,979 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What is the cheapest airline to fly from Lewiston, Idaho to St. Louis round-trip?
According to our current data, Delta ($702), offers the cheapest pricing from Lewiston, Idaho to St. Louis.
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

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$702+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Lewiston to St. Louis with Cheapflights

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Cheap flight deals from Lewiston to St. Louis

Round-trip from

Find flight deals from Lewiston to St. Louis

Cheapest flights from Lewiston to St. LouisExplore 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 July 29, 2025.

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 July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Lewiston to St. Louis that are best for you.

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.

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?

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Lewiston to St. Louis, such as Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.

What is the cheapest airline to fly from Lewiston, Idaho to St. Louis round-trip?

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for Lewiston to St. Louis

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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 July 29, 2025.