Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Boise to St. Louis from $173

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boise to St. Louis departing on 11/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from Boise to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Boise to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Boise to St. Louis.

Cheap last minute flights

Planning a quick getaway from Boise to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Boise to St. Louis

Find recent round-trip train or bus tickets from Boise to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
2:00 pm - 12:57 amBOI-STL
9h 57m2 stops
7:20 am - 12:10 pmSTL-BOI
5h 50m1 stop
$325Delta
Find Deal
Wed, Dec 11 - Sat, Dec 14
3:26 pm - 10:26 pmBOI-STL
6h 00m1 stop
7:20 am - 12:10 pmSTL-BOI
5h 50m1 stop
$348Delta
Find Deal
Wed, Dec 11 - Sat, Dec 14
2:00 pm - 12:57 amBOI-STL
9h 57m2 stops
7:15 pm - 11:45 pmSTL-BOI
5h 30m1 stop
$350Delta
Find Deal
Wed, Dec 11 - Sun, Dec 15
7:03 am - 4:40 pmBOI-STL
8h 37m1 stop
1:40 pm - 9:52 pmSTL-BOI
9h 12m1 stop
$353American Airlines
Find Deal
Tue, Dec 31 - Tue, Jan 7
2:16 pm - 11:54 pmBOI-STL
8h 38m1 stop
7:20 am - 1:31 pmSTL-BOI
7h 11m1 stop
$358American Airlines
Find Deal
Wed, Dec 11 - Sat, Dec 14
6:40 am - 12:43 pmBOI-STL
5h 03m1 stop
1:44 pm - 8:08 pmSTL-BOI
7h 24m1 stop
$391United Airlines
Find Deal
Sun, Dec 15 - Tue, Dec 31
11:40 am - 12:50 amBOI-STL
12h 10m2 stops
10:25 am - 6:20 pmSTL-BOI
8h 55m2 stops
$416Southwest
Find Deal
Fri, May 9 - Tue, May 13
4:55 pm - 12:25 amBOI-STL
6h 30m1 stop
2:40 pm - 11:00 pmSTL-BOI
9h 20m2 stops
$425Southwest
Find Deal
Sun, Dec 15 - Tue, Dec 31
5:00 am - 3:47 pmBOI-STL
9h 47m2 stops
8:00 am - 6:02 pmSTL-BOI
11h 02m2 stops
$443United Airlines
Find Deal
Mon, Dec 30 - Tue, Jan 7
2:45 pm - 11:56 pmBOI-STL
8h 11m1 stop
7:00 am - 1:45 pmSTL-BOI
7h 45m1 stop
$476Alaska Airlines
Find Deal
Wed, May 7 - Sat, May 10
5:17 pm - 12:42 amBOI-STL
6h 25m1 stop
$173Delta
Find Deal
Tue, Nov 26
6:30 am - 4:55 pmBOI-STL
9h 25m2 stops
$298Southwest
Find Deal
Tue, Nov 26
2:09 pm - 11:57 pmBOI-STL
8h 48m1 stop
$353American Airlines
Find Deal
Tue, Dec 3
6:53 pm - 10:27 amBOI-STL
14h 34m2 stops
$358United Airlines
Find Deal
Tue, Dec 3
12:45 pm - 1:24 pmBOI-STL
23h 39m1 stop
$359Alaska Airlines
Find Deal
Tue, Dec 3
12:45 am - 8:54 amBOI-STL
7h 09m1 stop
$388American Airlines
Find Deal
Sun, Dec 1
2:15 pm - 12:43 pmBOI-STL
21h 28m2 stops
$393United Airlines
Find Deal
Mon, Dec 2
9:08 pm - 11:45 amBOI-STL
37h 37m3 stops
Tue, Nov 26
6:53 pm - 8:41 pmBOI-STL
24h 48m3 stops
$458United Airlines
Find Deal
Tue, Dec 3
10:44 pm - 11:30 amBOI-STL
35h 46m3 stops
1:00 pm - 10:56 amSTL-BOI
22h 56m3 stops
Sun, Nov 24 - Mon, Dec 2
12:40 pm - 10:00 pmBOI-STL
8h 20m1 stop
5:35 pm - 12:45 amSTL-BOI
8h 10m1 stop
$876Southwest
Find Deal
Sun, Nov 24 - Mon, Dec 2
11:10 am - 8:20 pmBOI-STL
8h 10m2 stops
4:05 pm - 12:05 amSTL-BOI
9h 00m1 stop
$881Southwest
Find Deal
Sun, Nov 24 - Mon, Dec 2
6:55 am - 7:28 pmBOI-STL
11h 33m2 stops
11:51 am - 10:28 pmSTL-BOI
11h 37m2 stops
$976Alaska Airlines
Find Deal
Sun, Nov 24 - Mon, Dec 2

Delta flights from Boise to St. Louis

Our best Delta deals on Boise to St. Louis flight tickets
Delta
Dec 11
BOI2:00 pmBoise Air Term. Gowen Fld
9h 57m
2 stops
STL12:57 amLambert-St Louis
Dec 14
STL7:20 amLambert-St Louis
5h 50m
1 stop
BOI12:10 pmBoise Air Term. Gowen Fld
Delta
Dec 11
BOI3:26 pmBoise Air Term. Gowen Fld
6h 00m
1 stop
STL10:26 pmLambert-St Louis
Dec 14
STL7:20 amLambert-St Louis
5h 50m
1 stop
BOI12:10 pmBoise Air Term. Gowen Fld
Delta
Dec 11
BOI2:00 pmBoise Air Term. Gowen Fld
9h 57m
2 stops
STL12:57 amLambert-St Louis
Dec 15
STL7:15 pmLambert-St Louis
5h 30m
1 stop
BOI11:45 pmBoise Air Term. Gowen Fld

American Airlines flights from Boise to St. Louis

Our best American Airlines deals on Boise to St. Louis flight tickets
American Airlines
Dec 31
BOI7:03 amBoise Air Term. Gowen Fld
8h 37m
1 stop
STL4:40 pmLambert-St Louis
Jan 7
STL1:40 pmLambert-St Louis
9h 12m
1 stop
BOI9:52 pmBoise Air Term. Gowen Fld
American Airlines
Dec 11
BOI2:16 pmBoise Air Term. Gowen Fld
8h 38m
1 stop
STL11:54 pmLambert-St Louis
Dec 14
STL7:20 amLambert-St Louis
7h 11m
1 stop
BOI1:31 pmBoise Air Term. Gowen Fld
American Airlines
Dec 11
BOI2:16 pmBoise Air Term. Gowen Fld
8h 38m
1 stop
STL11:54 pmLambert-St Louis
Dec 15
STL7:20 amLambert-St Louis
7h 11m
1 stop
BOI1:31 pmBoise Air Term. Gowen Fld

See travel insights to St. Louis from

How to get the cheapest flight ticket from Boise 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 is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from Boise to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $355. The month of February is another great option to travel to St. Louis, with average flight prices from Boise averaging around $380.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $384. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $601. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Boise in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $414 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $497 per ticket.

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from Boise is 58 days out, which is when prices tend to be around $455. In the past 72 hours, momondo users found flights from Boise to St. Louis for as low as $208.

How have Boise to St. Louis flight prices changed over time?

As of November 2024, prices for Boise to St. Louis flights are approximately 53% cheaper when compared to flights at the same time last year.

When to book flights from Boise to St. Louis

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

Cheap Boise to St. Louis (BOI to STL) flight deals and tips

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

Best Price Found

$173

Fastest flight time

4h 43m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Boise in the past 72 hours is $173. The best round-trip flight deal from Boise to St. Louis found on momondo in the last 72 hours is $325.
The fastest flight from Boise to St. Louis takes 4h 43m
There are no direct flights from Boise to St. Louis. Popular non-direct route for this connection is Boise Air Term. Gowen Fld Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Boise Air Term. Gowen Fld to Lambert-St Louis by plane?

    The distance between Boise Air Term. Gowen Fld and Lambert-St Louis is about 1389.5 mi. By plane, this route typically takes 4h 43m.

  • When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Lambert-St Louis Airport?

    Prices for flights from Boise Air Term. Gowen Fld Airport to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boise Air Term. Gowen Fld 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.

  • What is the most popular airline from Boise to St. Louis?


Best airlines flying from Boise to St. Louis

Compare and see reviews for airlines that fly from Boise to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $286Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $297Free CancellationRating
8.0
8,755 reviews
Search Delta flights
United AirlinesPriceFrom $320Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
SouthwestPriceFrom $380Free CancellationRating
8.1
5,005 reviews
Search Southwest flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Boise.

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

momondo does allow users to show only those flights to St. Louis from Boise which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Boise.

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

If you are not ready to book a flight from Boise to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.


An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Wed 11/27
Wed 12/4
Email me momondo's favorite deals

Find better results for your trip to the United States