$242 Cheap Flights from St. Louis (STL) to Lewiston (LWS)

View $242 flight on Sun, Dec 14, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Lewiston, ID (LWS-Nez Perce County Regional)

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Cheap Flights from St. Louis to Lewiston (STL-LWS)

Prices were available within the past 7 days and start at $242 for one-way flights and $345 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Jan 9 - Mon, Jan 12
STL
St. Louis
LWS
Lewiston
$345 Roundtrip, found 4 days ago
$345
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Jan 9 from St. Louis to Lewiston, returning Mon, Jan 12, priced at $345 found 4 days ago
Delta
Tue, Jan 13 - Sat, Jan 17
STL
St. Louis
LWS
Lewiston
$366 Roundtrip, found 4 days ago
$366
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jan 13 from St. Louis to Lewiston, returning Sat, Jan 17, priced at $366 found 4 days ago
Delta
Wed, Jan 14 - Sun, Jan 18
STL
St. Louis
LWS
Lewiston
$411 Roundtrip, found 4 days ago
$411
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Jan 14 from St. Louis to Lewiston, returning Sun, Jan 18, priced at $411 found 4 days ago
Delta
Sun, Jan 11 - Sat, Jan 17
STL
St. Louis
LWS
Lewiston
$427 Roundtrip, found 4 days ago
$427
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Jan 11 from St. Louis to Lewiston, returning Sat, Jan 17, priced at $427 found 4 days ago
Delta
Thu, Jan 15 - Sat, Jan 17
STL
St. Louis
LWS
Lewiston
$432 Roundtrip, found 4 days ago
$432
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Jan 15 from St. Louis to Lewiston, returning Sat, Jan 17, priced at $432 found 4 days ago
Delta
Thu, Jan 15 - Sun, Jan 18
STL
St. Louis
LWS
Lewiston
$476 Roundtrip, found 4 days ago
$476
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Jan 15 from St. Louis to Lewiston, returning Sun, Jan 18, priced at $476 found 4 days ago
Delta
Tue, Jan 13 - Wed, Jan 14
STL
St. Louis
LWS
Lewiston
$483 Roundtrip, found 4 days ago
$483
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jan 13 from St. Louis to Lewiston, returning Wed, Jan 14, priced at $483 found 4 days ago
Delta
Thu, Dec 18 - Mon, Dec 22
STL
St. Louis
LWS
Lewiston
$487 Roundtrip, found 4 days ago
$487
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Dec 18 from St. Louis to Lewiston, returning Mon, Dec 22, priced at $487 found 4 days ago
Delta
Mon, Dec 22 - Thu, Dec 25
STL
St. Louis
LWS
Lewiston
$503 Roundtrip, found 4 days ago
$503
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Dec 22 from St. Louis to Lewiston, returning Thu, Dec 25, priced at $503 found 4 days ago
Delta
Tue, Jan 13 - Thu, Jan 15
STL
St. Louis
LWS
Lewiston
$504 Roundtrip, found 4 days ago
$504
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Jan 13 from St. Louis to Lewiston, returning Thu, Jan 15, priced at $504 found 4 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS) cost?
Grab a cheap one-way flight from $242 or cheap return flight from $345 from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS)?
January is the least expensive month to fly from STL to LWS. Traveling during quieter months is often the key to scoring lower fares.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from STL to LWS. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS)?
You'll need to book a flight with a layover if you're traveling from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from STL to LWS?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS) last-minute?
Last-minute bookings from STL to LWS are generally more expensive. To lock in the lowest prices, start searching for flights early. That being said, if you can play around with your travel dates, you may land a cheap ticket right before your trip.
Is it cheaper to book a STL to LWS flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to LWS flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place will take the stress out of travel planning. Just secure your flights and select from our wide range of hotels, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Nez Perce County Regional Airport (LWS)?
Typically, it's possible to cancel or reschedule your STL to LWS flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Nez Perce County Regional
Roundtrip price
$345
Distance
1446 mi

Book with confidence

St. Louis to Lewiston Flights

The cheapest times to fly from St. Louis to Lewiston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Lewiston are during the month of January. You can find some of the cheapest flights from St. Louis to Lewiston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Lewiston

Sunday is one of the best days to book for cheap flights from St. Louis to Lewiston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Lewiston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Lewiston in 2025. You can also book with separate airlines for your outbound and return journeys, from $242 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Lewiston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Lewiston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Lewiston Flights

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*Available to One Key members.