$329 Cheap Flights from St. Louis (STL) to Pocatello (PIH)

View $329 flight on Tue, Sep 2, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Pocatello, ID (PIH-Pocatello Regional)

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Cheap Flights from St. Louis to Pocatello (STL-PIH)

Prices were available within the past 7 days and start at $329 for one-way flights and $387 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 26 - Tue, Sep 9
STL
St. Louis
PIH
Pocatello
$387 Roundtrip, found 5 days ago
$387
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Aug 26 from St. Louis to Pocatello, returning Tue, Sep 9, priced at $387 found 5 days ago
Delta
Wed, Sep 17 - Tue, Sep 23
STL
St. Louis
PIH
Pocatello
$392 Roundtrip, found 2 days ago
$392
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Sep 17 from St. Louis to Pocatello, returning Tue, Sep 23, priced at $392 found 2 days ago
Delta
Wed, Sep 17 - Sat, Sep 20
STL
St. Louis
PIH
Pocatello
$397 Roundtrip, found 2 days ago
$397
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Sep 17 from St. Louis to Pocatello, returning Sat, Sep 20, priced at $397 found 2 days ago
Delta
Sat, Sep 20 - Tue, Sep 23
STL
St. Louis
PIH
Pocatello
$402 Roundtrip, found 2 days ago
$402
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Sep 20 from St. Louis to Pocatello, returning Tue, Sep 23, priced at $402 found 2 days ago
Delta
Thu, Aug 7 - Sat, Aug 9
STL
St. Louis
PIH
Pocatello
$407 Roundtrip, found 5 days ago
$407
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Aug 7 from St. Louis to Pocatello, returning Sat, Aug 9, priced at $407 found 5 days ago
Delta
Mon, Sep 1 - Tue, Sep 16
STL
St. Louis
PIH
Pocatello
$407 Roundtrip, found 5 days ago
$407
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Sep 1 from St. Louis to Pocatello, returning Tue, Sep 16, priced at $407 found 5 days ago
Delta
Mon, Aug 11 - Fri, Aug 22
STL
St. Louis
PIH
Pocatello
$412 Roundtrip, found 5 days ago
$412
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 11 from St. Louis to Pocatello, returning Fri, Aug 22, priced at $412 found 5 days ago
Delta
Tue, Sep 16 - Sat, Sep 20
STL
St. Louis
PIH
Pocatello
$417 Roundtrip, found 2 days ago
$417
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 16 from St. Louis to Pocatello, returning Sat, Sep 20, priced at $417 found 2 days ago
Delta
Mon, Aug 11 - Thu, Aug 21
STL
St. Louis
PIH
Pocatello
$422 Roundtrip, found 5 days ago
$422
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 11 from St. Louis to Pocatello, returning Thu, Aug 21, priced at $422 found 5 days ago
Delta
Mon, Aug 18 - Tue, Sep 2
STL
St. Louis
PIH
Pocatello
$445 Roundtrip, found 5 days ago
$445
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 18 from St. Louis to Pocatello, returning Tue, Sep 2, priced at $445 found 5 days ago
Delta
Mon, Aug 18 - Sat, Aug 30
STL
St. Louis
PIH
Pocatello
$460 Roundtrip, found 5 days ago
$460
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 18 from St. Louis to Pocatello, returning Sat, Aug 30, priced at $460 found 5 days ago
Delta
Wed, Sep 17 - Mon, Sep 22
STL
St. Louis
PIH
Pocatello
$465 Roundtrip, found 2 days ago
$465
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Sep 17 from St. Louis to Pocatello, returning Mon, Sep 22, priced at $465 found 2 days ago
Delta
Mon, Aug 18 - Thu, Sep 4
STL
St. Louis
PIH
Pocatello
$470 Roundtrip, found 5 days ago
$470
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 18 from St. Louis to Pocatello, returning Thu, Sep 4, priced at $470 found 5 days ago
Delta
Mon, Aug 11 - Fri, Aug 15
STL
St. Louis
PIH
Pocatello
$472 Roundtrip, found 5 days ago
$472
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Aug 11 from St. Louis to Pocatello, returning Fri, Aug 15, priced at $472 found 5 days ago
Delta
Sat, Sep 20 - Mon, Sep 22
STL
St. Louis
PIH
Pocatello
$475 Roundtrip, found 2 days ago
$475
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Sep 20 from St. Louis to Pocatello, returning Mon, Sep 22, priced at $475 found 2 days ago
Delta
Wed, Sep 17 - Sat, Sep 20
STL
St. Louis
PIH
Pocatello
$477 Roundtrip, found 2 days ago
$477
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Sep 17 from St. Louis to Pocatello, returning Sat, Sep 20, priced at $477 found 2 days ago
Delta
Mon, Sep 15 - Tue, Sep 23
STL
St. Louis
PIH
Pocatello
$480 Roundtrip, found 2 days ago
$480
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Sep 15 from St. Louis to Pocatello, returning Tue, Sep 23, priced at $480 found 2 days ago
Flights from St. Louis (STL) to Pocatello (PIH)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Pocatello Regional
Roundtrip price
$386
Distance
1193 mi

St. Louis to Pocatello Flights

The cheapest times to fly from St. Louis to Pocatello

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 Pocatello are during the month of August. You can find some of the cheapest flights from St. Louis to Pocatello with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Pocatello: 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 Pocatello

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 Pocatello in 2025. You can also book with separate airlines for your outbound and return journeys, from $329 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 Pocatello 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 Pocatello 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.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Pocatello Regional Airport (PIH) cost?
Discover the latest flight deals from STL to PIH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to PIH?
The cheapest flights from STL to PIH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to PIH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to PIH. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Pocatello Regional Airport (PIH)?
You'll have to take a flight with a layover if you're traveling from Lambert-St. Louis Intl. Airport (STL) to Pocatello Regional Airport (PIH). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from STL to PIH?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, including the carrier 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 Pocatello Regional Airport (PIH)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Pocatello Regional Airport (PIH) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this 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 Pocatello Regional Airport (PIH) last-minute?
Last-minute fares from STL to PIH are usually more expensive. To secure the best rates, start looking for flights as soon as possible. That being said, if you're flexible with your travel dates, you may land a cheap fare right before you leave.
Is it cheaper to book a STL to PIH flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to PIH flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the hassle out of planning your trip. Simply pick your flights and select from our wide range of stays, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Pocatello Regional Airport (PIH)?
Typically, you can cancel or reschedule your STL to PIH flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you'd like further information, head to our Customer Service portal.

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*Available to One Key members.