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Cheap flights from Lewiston, Idaho to St. Louis from $604

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Lewiston, Idaho to St. Louis departing on 4/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Lewiston, Idaho to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:10 am - 5:07 pm
LWS
-
STL
8h 57m
2 stops
Delta Logo
7:00 am - 11:33 am
STL
-
LWS
6h 33m
1 stop
$604Delta
Thu, Apr 9 - Mon, Apr 13
Delta Logo
6:10 am - 5:07 pm
LWS
-
STL
8h 57m
2 stops
Delta Logo
3:25 pm - 12:08 am
STL
-
LWS
10h 43m
2 stops
$644Delta
Thu, Apr 9 - Mon, Apr 13

Delta flights from Lewiston, Idaho to St. Louis

Our best Delta deals on Lewiston, Idaho to St. Louis flight tickets
Delta
Apr 9
LWS6:10 amLewiston Nez Perce Rgnl
8h 57m
2 stops
STL5:07 pmLambert-St Louis
Apr 13
STL7:00 amLambert-St Louis
6h 33m
1 stop
LWS11:33 amLewiston Nez Perce Rgnl
$604
Delta
Apr 9
LWS6:10 amLewiston Nez Perce Rgnl
8h 57m
2 stops
STL5:07 pmLambert-St Louis
Apr 13
STL3:25 pmLambert-St Louis
10h 43m
2 stops
LWS12:08 amLewiston Nez Perce Rgnl
$644

momondo Fare Finder

 
Customize your flight search to find flights from Lewiston, Idaho 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, momondo users made 832,500 searches. Data last updated March 30, 2026.
Use the filters below to find and compare flights from Lewiston, Idaho 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

Thu 4/9

6:10 am-5:07 pm

2 stops8h 57m

Lambert-St Louis

Mon 4/13

7:00 am-11:33 am

1 stop6h 33m

$604

LewistonSt. Louis

LWS - STL

LWSSTL

Lewiston Nez Perce Rgnl

Thu 4/9

6:10 am-5:07 pm

2 stops8h 57m

Lambert-St Louis

Mon 4/13

3:25 pm-12:08 am

2 stops10h 43m

$644

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Lewiston, Idaho to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to St. Louis?

Delta, United Airlines and Alaska Airlines are the top three most popular airlines that fly to St. Louis from Lewiston, Idaho according to our data. Delta is the first choice among our users, with 58% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Lewiston, Idaho to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Lewiston, Idaho to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Lewiston, Idaho to St. Louis (LWS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Lewiston, Idaho to St. Louis

Fastest flight time

8h 57m

Direct flights

None
The fastest flight from Lewiston, Idaho to St. Louis takes 8h 57m
There are no direct flights from Lewiston, Idaho to St. Louis. There are no popular flight routes from Lewiston, Idaho to St. Louis.
Search flight deals

  • How far is Lewiston Nez Perce Rgnl to Lambert-St Louis by plane?

    The straight-line distance from Lewiston Nez Perce Rgnl to Lambert-St Louis is 1457.1 mi. Flights usually cover this in 8h 57m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lewiston Nez Perce Rgnl Airport to Lambert-St Louis Airport?

    Prices for flights from Lewiston Nez Perce Rgnl Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lewiston Nez Perce Rgnl Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lewiston Nez Perce Rgnl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Collinsville
St. Peters
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Edwardsville
Eureka
Litchfield
Shrewsbury
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from Lewiston to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Lewiston to St. Louis for you.

Can I find flights from Lewiston to St. Louis with flexible booking policies on momondo?

All flight searches from Lewiston to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Lewiston to St. Louis?

Once all potential Lewiston to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Lewiston to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Lewiston. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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