$86 Cheap flight deals from Las Vegas (LAS) to O'Fallon (STL)

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This Weekend's Flight Deals from Las Vegas to O'Fallon

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Apr 12 - Mon, Apr 13
LAS
Harry Reid Intl.
STL
Lambert-St. Louis Intl.
$362 Roundtrip, found 22 hours ago
$362
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Sun, Apr 12 from Harry Reid Intl. to Lambert-St. Louis Intl., returning Mon, Apr 13, priced at $362 found 22 hours ago

Airfares from $86 One Way, $176 Round Trip from Las Vegas to O'Fallon

Prices starting at $176 for return flights and $86 for one-way flights to O'Fallon were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 1 - Sun, May 10
LAS
Las Vegas
STL
St. Louis
$176 Roundtrip, found 6 days ago
$176
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, May 1 from Las Vegas to St. Louis, returning Sun, May 10, priced at $176 found 6 days ago
Fri, May 1 - Sun, May 10
LAS
Las Vegas
STL
St. Louis
$181 Roundtrip, found 6 days ago
$181
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, May 1 from Las Vegas to St. Louis, returning Sun, May 10, priced at $181 found 6 days ago
Thu, May 21 - Mon, May 25
LAS
Las Vegas
STL
St. Louis
$185 Roundtrip, found 1 day ago
$185
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, May 21 from Las Vegas to St. Louis, returning Mon, May 25, priced at $185 found 1 day ago
Wed, May 13 - Sun, May 17
LAS
Las Vegas
STL
St. Louis
$186 Roundtrip, found 5 days ago
$186
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, May 13 from Las Vegas to St. Louis, returning Sun, May 17, priced at $186 found 5 days ago
Thu, Apr 23 - Sat, Apr 25
LAS
Las Vegas
STL
St. Louis
$187 Roundtrip, found 8 hours ago
$187
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, Apr 23 from Las Vegas to St. Louis, returning Sat, Apr 25, priced at $187 found 8 hours ago

O'Fallon economy flight packages

Price found within the past 48 hours. Click for updated prices.
Larkspur Landing Extended Stay Suites St. Louis Riverport - Airport West
3.0-star property

Larkspur Landing Extended Stay Suites St. Louis Riverport - Airport West

7.4/10 Good! (1,012 reviews)

May 14 - May 17

3 night stay

Las Vegas (LAS) to St. Louis (STL)

Frontier Airlines • Non-stop roundtrip • Coach
Price was $640, price is now $534 per person
$534
per person
found 1 day ago
The property needs to be remodeled as it's completely outdated! The door on the microwave in my room was broken. When we reported it, we were advised there was no maintenance staff on duty. We weren't even offered a room change, and the hotel was not full! An entry door which needed key card access for entry after business hours was not secured.

Reviewed on Oct 13, 2025

The Cheshire
4.0-star property

The Cheshire

8.6/10 Excellent! (1,009 reviews)

May 14 - May 17

3 night stay

Las Vegas (LAS) to St. Louis (STL)

Frontier Airlines • Non-stop roundtrip • Coach
Price was $1,050, price is now $855 per person
$855
per person
found 1 day ago
We always stay here when in St. Louis. Love the place. Nice atmosphere, great pub.

Reviewed on Sep 2, 2025

Sheraton Westport Plaza Hotel St. Louis
3.5-star property

Sheraton Westport Plaza Hotel St. Louis

8.4/10 Very Good! (867 reviews)

May 14 - May 17

3 night stay

Las Vegas (LAS) to St. Louis (STL)

Frontier Airlines • Non-stop roundtrip • Coach
Price was $875, price is now $724 per person
$724
per person
found 1 day ago
It was nice overall except for not having a working USB PORT in the room

Reviewed on Aug 22, 2021

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More About Flying To O'Fallon from Las Vegas

Route Information for Flights from Las Vegas to O'Fallon

Origin Airport IATA Code
LAS
Destination Airport IATA Code
STL
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Las Vegas to O'Fallon

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.