$141 Cheap flight deals from Boise (BOI) to O'Fallon (STL)

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This Weekend's Flight Deals from Boise 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.

Fri, Oct 3 - Thu, Oct 9
BOI
Boise
STL
Lambert-St. Louis Intl.
$330 Roundtrip, found 16 hours ago
$330
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, Oct 3 from Boise to Lambert-St. Louis Intl., returning Thu, Oct 9, priced at $330 found 16 hours ago

Airfares from $141 One Way, $280 Round Trip from Boise to O'Fallon

Prices starting at $280 for return flights and $141 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.

Tue, Nov 4 - Tue, Nov 11
BOI
Boise
STL
St. Louis
$280 Roundtrip, found 3 days ago
$280
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Nov 4 from Boise to St. Louis, returning Tue, Nov 11, priced at $280 found 3 days ago
Tue, Oct 14 - Tue, Oct 21
BOI
Boise
STL
St. Louis
$280 Roundtrip, found 4 days ago
$280
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 14 from Boise to St. Louis, returning Tue, Oct 21, priced at $280 found 4 days ago
Wed, Oct 22 - Wed, Oct 29
BOI
Boise
STL
St. Louis
$282 Roundtrip, found 3 days ago
$282
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Oct 22 from Boise to St. Louis, returning Wed, Oct 29, priced at $282 found 3 days ago
Mon, Oct 20 - Tue, Oct 28
BOI
Boise
STL
St. Louis
$287 Roundtrip, found 2 days ago
$287
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Oct 20 from Boise to St. Louis, returning Tue, Oct 28, priced at $287 found 2 days ago
Tue, Oct 14 - Sat, Oct 25
BOI
Boise
STL
St. Louis
$289 Roundtrip, found 4 days ago
$289
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Oct 14 from Boise to St. Louis, returning Sat, Oct 25, priced at $289 found 4 days ago

O'Fallon economy flight packages

Price found within the past 48 hours. Click for updated prices.
Baymont by Wyndham Ft. Leonard/Saint Robert
2.5-star property

Baymont by Wyndham Ft. Leonard/Saint Robert

9/10 Wonderful! (1,006 reviews)

Nov 13 - Nov 15

2 night stay

Boise (BOI) to St. Louis (STL)

Alaska Airlines • Coach

St. Louis (STL) to Boise (BOI)

Contour Airlines • Coach
Price was $6,253, price is now $6,235 per person
$6,235
per person
found 19 hours ago
The only issue and a pretty big one is that there's no maid service until the 3rd day of your stay... trash was overflowing unless we took it out and we ran out of towels unless we asked for them... other than than super comfy

Reviewed on Aug 29, 2025

Comfort Suites Rolla
2.5-star property

Comfort Suites Rolla

8.8/10 Excellent! (889 reviews)

Nov 13 - Nov 15

2 night stay

Boise (BOI) to St. Louis (STL)

Alaska Airlines • Coach

St. Louis (STL) to Boise (BOI)

Contour Airlines • Coach
Price was $6,280, price is now $6,255 per person
$6,255
per person
found 19 hours ago
Property needs updating. Gym has most of the equipment not working. Room doors don’t seal light from hallway which means noise comes through as well. No bathroom in pool area. Overall price is in line with property. Breakfast was very good. Staff was attentive.

Reviewed on Jun 16, 2025

Comfort Inn St. Robert / Fort Leonard Wood
2.5-star property

Comfort Inn St. Robert / Fort Leonard Wood

9/10 Wonderful! (988 reviews)

Nov 13 - Nov 15

2 night stay

Boise (BOI) to St. Louis (STL)

Alaska Airlines • Coach

St. Louis (STL) to Boise (BOI)

Contour Airlines • Coach
Price was $6,263, price is now $6,248 per person
$6,248
per person
found 19 hours ago
Breakfast was good. Bed were comfortable. Sink drained slow. Ants in bathroom which is odd since we’re on the 3rd floor. Only gave us 1 roll of thin TP. Website had an outdoor pool turned out to be a nearby attraction and was misleading. Would have book elsewhere. Fitness center was smaller than the hotel room and a joke but there’s a planet fitness 30 min away. Definitely wouldn’t stay at a comfort inn again.

Reviewed on Aug 14, 2025

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More About Flying To O'Fallon from Boise

Route Information for Flights from Boise to O'Fallon

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

Boise 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.