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

Delta, at $365, was found to be the cheapest airline from St. Louis to Lewiston, Idaho..

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

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

In terms of precipitation, rainfall in Lewiston, Idaho ranges from 0.3 - 1.7 inches per month. June is typically the wettest month, when rainfall can reach 1.7 in. August is typically the driest time to visit Lewiston, Idaho when rainfall is around 0.3 in.

If weather is an important factor for your trip to Lewiston, Idaho, 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 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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

Travelers have found that booking a Monday departure is the best way to save up to 184% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

When flying from St. Louis to Lewiston, Idaho, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 29% versus a flight at noon.

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

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

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

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

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

Yes. Cheapflights offers flight deals from St. Louis 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.

$365+ Flights from St. Louis to Lewiston, ID

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Cheap flight deals from St. Louis to Lewiston

Round-trip from	$365 (Delta)

From Lambert-St Louis to Lewiston Nez Perce Rgnl

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Find flight deals from St. Louis to Lewiston

Cheapest flights from St. Louis to Lewiston
Explore the most affordable flight options available from St. Louis to Lewiston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Tue 10/212:29 pmSTL - LWS

2 stops8h 34mDelta

Mon 10/277:10 amLWS - STL

2 stops29h 06mDelta

Deal found 7/28

$365

Best flights from St. Louis to Lewiston
Discover carefully curated flight deals from St. Louis to Lewiston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Tue 10/212:29 pmSTL - LWS

2 stops8h 34mDelta

Wed 10/297:10 amLWS - STL

2 stops9h 25mDelta

Deal found 7/28

$365

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLewiston

STL - LWS

STLLWS

Lambert-St Louis

Tue 10/21

2:29 pm-9:03 pm

2 stops8h 34m

Lewiston Nez Perce Rgnl

Wed 10/29

7:10 am-6:35 pm

2 stops9h 25m

$365

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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

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

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

Currently, February is the cheapest month in which you can book a flight from St. Louis to Lewiston, Idaho (average of $278). Flying from St. Louis to Lewiston, Idaho in July is currently the most expensive (average of $527). 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 Lewiston

Peruse reviews from past customers who have flown with Delta from St. Louis to Lewiston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,977 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

7,977 reviews

Delta

8.0

Very good

7,977 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 St. Louis to Lewiston, Idaho round-trip?
Delta, at $365, was found to be the cheapest airline from St. Louis to Lewiston, Idaho..
Can I find deals for flights from St. Louis to Lewiston that include hotel bookings?
Yes. In addition to deals on St. Louis to Lewiston flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Lewiston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Lewiston.
Can I find deals for business class flights from St. Louis to Lewiston?
Yes. Cheapflights offers flight deals from St. Louis 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.
What is the cheapest month to book a flight from St. Louis to Lewiston, Idaho?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Lewiston, Idaho (average of $278). Flying from St. Louis to Lewiston, Idaho in July is currently the most expensive (average of $527). 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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$365+ Cheap flights from St. Louis to Lewiston, ID (STL - LWS)

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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Lewiston with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Lewiston

Round-trip from

Find flight deals from St. Louis to Lewiston

Cheapest flights from St. Louis to LewistonExplore the most affordable flight options available from St. Louis to Lewiston. 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 St. Louis to Lewiston. 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 St. Louis to Lewiston that are best for you.

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

Have a flexible travel schedule? Discover the best time to fly to Lewiston from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Lewiston

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

Reviews of airlines servicing Lewiston

Peruse reviews from past customers who have flown with Delta from St. Louis to Lewiston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Lewiston. 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 St. Louis to Lewiston, Idaho round-trip?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Lewiston

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Cheapest flights from St. Louis to Lewiston
Explore the most affordable flight options available from St. Louis to Lewiston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.